CISTERN FLUSHING APPARATUS THAT IMPROVES FLUSHING CAPABILITY AND TOILET HAVING SAME

Abstract

 The present invention discloses a water tank flushing device for improving flushing capability, comprising a water tank with a water storage chamber, a drain valve for controlling the water tank to drain water, a drain pipe in communication with the drain valve, and a flushing aid valve with a water inlet channel and a water outlet channel. The water inlet channel is in communication with a water source, and an outlet end of the water outlet channel is located in the water storage chamber. Pressure water flowing out of the water outlet channel flows to the toilet bowl through the drain channel. The pressure water assists in flushing the toilet bowl, which can effectively improve the flushing effect of an existing water tank flushing device with a low water tank; the pressure water can avoid the hidden danger of water leakage from the water tank due to the setting of the flushing aid valve; and retrofit costs are low.

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of bathroom accessories, in particular to a water tank flushing device for improving flushing capability and a toilet with the same.

BACKGROUND

[0002] Among existing flushing devices for flushing toilets, hidden water tank flushing devices have been widely used. Due to the flexible layout of toilets in various house types, the specifications of hidden water tanks should be diverse to adapt to various occasions. Low hidden water tank flushing devices have been favored by consumers due to low water tank mounting height and flexible layout. A hidden water tank is generally equipped with a water inlet valve, a drain valve, a driving device, water tank accessories, etc. When draining, the driving device is pressed to activate the drain valve, and water in the water tank flushes a toilet bowl under the action of gravitational potential energy. The flushing effect of the water tank flushed by the potential energy of water mainly depends on the level of potential energy, that is, high potential energy has a good flushing effect, while low potential energy has a poor flushing effect.

[0003] The low hidden water tank flushing device has low potential energy of water in the water tank and poor flushing effect due to its low water tank mounting height and low water level, making it difficult to match most toilets in the market. Some existing hidden water tank flushing devices achieve the effect of increasing flushing force by enlarging a drain port of the water tank and increasing the working water level as much as possible, but the actual improvement effect is not significant.

SUMMARY

[0004] The present invention provides a water tank flushing device for improving flushing capability and a toilet with the same to solve the above technical problems.

[0005] To achieve the above objective, a technical solution adopted by the present invention is as follows: A water tank flushing device for improving flushing capability comprises a water tank with a water storage chamber, a drain valve arranged in the water storage chamber for controlling the water tank to drain water, a drain pipe connecting a drain channel of the drain valve to a toilet bowl of a toilet, and a flushing aid valve with a water inlet channel and a water outlet channel, wherein the water inlet channel is in communication with a water source, and an outlet end of the water outlet channel is located in the water storage chamber; pressure water flowing out of the water outlet channel flows to the toilet bowl through the drain channel.

[0006] Preferably, the device further comprises a flow pipe, where an inlet end of the flow pipe is located in the water storage chamber; an outlet end of the flow pipe is in communication with the drain channel, or an outlet end of the flow pipe is directly or indirectly in communication with the toilet bowl after passing through the drain channel; the pressure water flowing out of the water outlet channel flows into the toilet bowel through the flow pipe.

[0007] Preferably, the flow pipe is independently formed and then mounted on the drain valve; or the flow pipe is integrally formed with the drain valve.

[0008] Preferably, the drain valve comprises a base arranged on the water tank and a main valve mounted on the base, the base is provided with the drain channel, an upper opening of the drain channel forms a drain port of the drain valve, the drain valve connects or disconnects the water storage chamber and the drain channel by opening or closing the drain port, and a lower opening of the drain channel is in communication with the drain pipe; and
the flow pipe is arranged in the water storage chamber, and the outlet end of the flow pipe is in communication with the drain channel through the drain port; or the flow pipe is arranged in the water storage chamber, a side opening is provided on a side wall of the drain channel, and the outlet end of the flow pipe is in communication with the drain channel through the side opening; or the outlet end of the flow pipe passes through the drain port and the lower opening of the drain channel in sequence and then is directly or indirectly in communication with the toilet bowl; or a side opening is provided on a side wall of the drain channel, and the outlet end of the flow pipe passes through the side opening and the lower opening of the drain channel in sequence and then is directly or indirectly in communication with the toilet bowl.

[0009] Preferably, the main valve comprises a second valve body and a valve core arranged in the second valve body and capable of moving up and down between an ascending position and a descending position, the valve core comprises a valve rod and a valve plate connected to a bottom end of the valve rod, the flow pipe is integrally formed on the valve rod, and the outlet end of the flow pipe is in communication with the drain channel through the drain port; when the valve core is located at the descending position, the valve plate closes the drain port; when the valve core is located at the ascending position, the valve plate opens the drain port.

[0010] Preferably, the inlet end of the flow pipe is located above a normal working water level of the water storage chamber, and the inlet end of the flow pipe can be in communication with the water storage chamber to serve as an overflow pipe of the water tank; or the inlet end of the flow pipe is in communication with the outlet end of the water outlet channel, and the flow pipe is independent of an overflow pipe of the water tank.

[0011] Preferably, when the flow pipe serves as the overflow pipe of the water tank, the device further comprises a water guide pipe, and the outlet end of the water outlet channel is in communication with an inlet end of the water guide pipe; and
an outlet end of the water guide pipe passes through the overflow pipe and then is directly or indirectly in communication with the toilet bowl, and an overflow gap connecting the water storage chamber and the toilet bowl is formed between the water guide pipe and the overflow pipe; or an outlet end of the water guide pipe is directly in communication with the overflow pipe.

[0012] Preferably, the drain pipe comprises a first drain pipe and a second drain pipe that is arranged on a seat of the toilet, and the drain channel is in communication with the toilet bowl through the first drain pipe and the second drain pipe in sequence; and
the outlet end of the water guide pipe passes through the overflow pipe and then is in communication with the first drain pipe; or the outlet end of the water guide pipe passes through the overflow pipe and the first drain pipe in sequence and then is in communication with the second drain pipe; or the outlet end of the water guide pipe passes through the overflow pipe, the first drain pipe, and the second drain pipe in sequence and then is directly in communication with the toilet bowel.

[0013] Preferably, the outlet end of the water guide pipe is directly in communication with the overflow pipe;

the device further comprises a buoyancy mechanism for controlling of an inlet end of the overflow pipe to open and close, the buoyancy mechanism comprises a first floating bucket located above the normal working water level of the water storage chamber; when the first floating bucket is located at a third falling position, the inlet end of the overflow pipe is controlled to close to disconnect the water storage chamber from the overflow pipe; when the first floating bucket is in a floating position, the inlet end of the overflow pipe is controlled to open to connect the water storage chamber with the overflow pipe; or

the device further comprises a one-way valve arranged at the inlet end of the overflow pipe; when the water level in the water storage chamber is higher than the inlet end of the overflow pipe, the one-way valve can open the inlet end of the overflow pipe in one direction under water pressure in the water storage chamber, so that water in the water storage chamber can flow out of the overflow pipe; when the water level in the water storage chamber is not higher than the inlet end of the overflow pipe, the one-way valve closes the inlet end of the overflow pipe to prevent water flowing out of the water outlet channel from flowing into the water storage chamber through the inlet end of the overflow pipe.

[0014] Preferably, the device further comprises a starting mechanism for opening the flushing aid valve and the drain valve, the flushing aid valve is arranged in the water storage chamber, the water source provides pressure water to the water inlet channel, the flushing aid valve comprises a control mechanism and a first valve body provided with the water inlet channel and the water outlet channel, and the control mechanism comprises a second floating bucket capable of moving up and down between a high position and a low position and a limit member movably arranged on the first valve body and capable of moving between a limiting position and a yielding position; the limit member at the limiting position can limit the second floating bucket to the low position; the limit member at the yielding position can release the limiting on the second floating bucket, so that the second floating bucket can float to the high position; when the second floating bucket is located at the high position, the control mechanism controls the connection of the water inlet channel with the water outlet channel; when the second floating bucket is located at the low position, the control mechanism controls the disconnection of the water inlet channel from the water outlet channel, and the limit member can be reset from the yielding position to the limiting position; the starting mechanism drives the limit member to move from the limiting position to the yielding position to open the flushing aid valve; or

[0015] the flushing aid valve comprises a first valve body with a reservoir chamber, a piston movably arranged in the reservoir chamber, and a driving mechanism in driving connection with the piston; the first valve body is provided with the water inlet channel and the water outlet channel, both of which are in communication with the reservoir chamber; when the driving mechanism drives the piston to move to compress the volume of the reservoir chamber, water in the reservoir chamber can be discharged from the water outlet channel; or

the flushing aid valve is an electromagnetic valve, and the water source provides pressure water to the water inlet channel; or

the flushing aid valve is a water pump, and the water source is either water in the water tank or water outside the water tank.

[0016] Preferably, the drain valve is in linkage fit with the limit member; in the process of opening the drain valve by the starting mechanism, the starting mechanism drives the limit member through the drain valve to move from the limiting position to the yielding position; or in the process of opening the drain valve by the starting mechanism, the starting mechanism directly drives the limit member to move from the limiting position to the yielding position; or the starting mechanism comprises a first starting mechanism and a second starting mechanism arranged independently, the first starting mechanism is used for opening the drain valve, and the second starting mechanism is used for driving the limit member to move from the limiting position to the yielding position.

[0017] Preferably, the flushing aid valve further comprises a water stop member movably arranged on the first valve body and capable of moving between a water inlet position and a water stop position, the water stop member fits the first valve body to enclose a back pressure chamber, a flow channel is provided between the water inlet channel and the back pressure chamber to connect the two, and a pressure relief hole is provided on a wall of the back pressure chamber; when the water stop member is located at the water inlet position, the water inlet channel is in communication with the water outlet channel; when the water stop member is located at the water stop position, the water stop member disconnects the water inlet channel from the water outlet channel; when the second floating bucket is located at the high position, the control mechanism opens the pressure relief hole to control the water stop member to move to the water inlet position; when the second floating bucket is located at the low position, the control mechanism closes the pressure relief hole to control the water stop member to move to the water stop position.

[0018] Preferably, the control mechanism further comprises a movable member movably arranged on the first valve body and fitting the opening and closing of the pressure relief hole, and the second floating bucket is in linkage fit with the movable member; when the second floating bucket ascends to the high position, the movable member is linked to open the pressure relief hole; when the second floating bucket is located at the low position, the movable member closes the pressure relief hole.

[0019] Preferably, when the second floating bucket is located at the low position, the movable member can be reset under its gravity to the position where the pressure relief hole is closed; or a first elastic member is provided between the movable member and the first valve body, and when the second floating bucket is located at the low position, the movable member can be reset under the action of the first elastic member to the position where the pressure relief hole is closed; or the movable member is provided with a third balancing weight, and when the second floating bucket is located at the low position, the movable member can be reset under the action of the third balancing weight to the position where the pressure relief hole is closed; or magnetic structures that attract or repel each other are provided between the movable member and the first valve body, and when the second floating bucket is located at the low position, the movable member can be reset under the magnetic force of the magnetic structures to the position where the pressure relief hole is closed.

[0020] Preferably, the low position comprises a first falling position and a second falling position, and the first falling position is higher than the second falling position; after the water tank finishes drainage, the second floating bucket falls to the second falling position along with the water level of the water tank; in the water inlet process of the water tank, the second floating bucket rises with the water level of the water tank and is limited to the first falling position by the limit member at the limiting position; when the second floating bucket is located at the first falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the gravity of the movable member, the elastic force of the first elastic member, the magnetic force of the magnetic structures, or the gravity of the third balancing weight; when the second floating bucket is located at the second falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the combined action of the gravity of the movable member, the elastic force of the first elastic member, the magnetic force of the magnetic structures, or the gravity of the third balancing weight, and the gravity of the second floating bucket.

[0021] Preferably, the movable member is a swing rod rotatably arranged on the first valve body; and
one end of the swing rod is in linkage fit with the second floating bucket, the other end of the swing rod fits the opening and closing of the pressure relief hole, and a middle part of the swing rod is rotatably connected to the first valve body; or one end of the swing rod is in linkage fit with the second floating bucket, the other end of the swing rod is rotatably connected to the first valve body, and a middle part of the swing rod fits the opening and closing of the pressure relief hole.

[0022] Preferably, the drain valve comprises a base arranged on the water tank and a main valve mounted on the base, the base is provided with the drain channel, an upper opening of the drain channel forms a drain port of the drain valve, the drain valve connects or disconnects the water storage chamber and the drain channel by opening or closing the drain port, the main valve comprises a second valve body and a valve core arranged on the second valve body and capable of moving up and down between an ascending position and a descending position, and the valve core is provided with an abutting portion; the valve core at the descending position can close the drain port; the valve core at the ascending position can open the drain port; in the process of driving the valve core to ascend from the descending position to the ascending position by the starting mechanism, the valve core can be in abutting fit with the limit member through the abutting portion to drive the limit member to move from the limiting position to the yielding position.

[0023] Preferably, the abutting portion is rotatably arranged on the valve core and can rotate between a first position and a second position; when the abutting portion is located at the first position, the valve core can be in abutting fit with the limit member through the abutting portion to drive the limit member to move from the limiting position to the yielding position; after the valve core drives the limit member to move from the limiting position to the yielding position, the abutting portion loses the abutting fit with the limit member; in the process of resetting the valve core from the ascending position to the descending position, the abutting portion abuts against the limit member and rotates from the first position to the second position to yield the limit member, so that the valve core can continue to descend; when the valve core is reset to the descending position, the abutting portion can be reset from the second position to the first position; and
the abutting portion can be reset from the second position to the first position under its gravity; or a third elastic member is provided between the abutting portion and the valve core, and the abutting portion can be reset from the second position to the first position under the action of the third elastic member; or the abutting portion is provided with a second balancing weight, and the abutting portion can be reset from the second position to the first position under the action of the second balancing weight.

[0024] Preferably, the starting mechanism comprises a button in abutting fit with the limit member; and in the process of pressing the button to open the drain valve, the button is in abutting fit with the limit member to drive the limit member to move from the limiting position to the yielding position.

[0025] Preferably, the limit member can be reset from the yielding position to the limiting position under its gravity; or a second elastic member is provided between the limit member and the first valve body, and the limit member can be reset from the yielding position to the limiting position under the action of the second elastic member; or the limit member is provided with a first balancing weight, and the limit member can be reset from the yielding position to the limiting position under the action of the first balancing weight.

[0026] Preferably, the limit member is arranged on the first valve body in a rotatable or sliding manner.

[0027] Preferably, the driving mechanism is an electric driving mechanism; or the driving mechanism is in linkage fit with the drain valve, and in the process of opening the drain port by the drain valve, the driving mechanism drives the piston to move to compress the volume of the reservoir chamber; or the driving mechanism is in linkage fit with the starting mechanism for opening the drain valve, and in the process of opening the drain valve by the starting mechanism, the driving mechanism drives the piston to move to compress the volume of the reservoir chamber.

[0028] Preferably, a water inlet valve is provided in the water storage chamber, a water inlet of the water inlet valve is in communication with the water source, and a water outlet of the water inlet valve is in communication with the water inlet channel through a water replenishment pipe to replenish water to the reservoir chamber.

[0029] Preferably, an outlet of the water inlet channel and an inlet of the water outlet channel are both arranged at a top of the reservoir chamber.

[0030] Preferably, the flushing aid valve is arranged in the water storage chamber, and the flushing aid valve is mounted together with the drain valve.

[0031] In addition, the present invention further provides a toilet, comprising a seat provided with a toilet bowl and the water tank flushing device for improving flushing capability as described in any of the above.

[0032] Compared with existing technologies, the present invention has the following beneficial effects:
In the present invention, the flushing aid valve is provided, the water inlet channel of the flushing aid valve is in communication with the water source, and pressure water flowing out of the water outlet channel of the flushing aid valve is discharged to the toilet bowl to assist in flushing the toilet bowl, which can effectively improve the flushing effect of an existing water tank flushing device with a low water tank position. In addition, the pressure water flowing out of the water outlet channel flows to the toilet bowl through the drain channel of the drain valve. On the one hand, the water tank flushing device does not need to be provided with an additional through hole on the wall of the water tank for guiding the water from the water outlet channel to a pipe of the toilet bowl, which can avoid the hidden danger of water leakage from the water tank in the presence of a pipe passing through the water tank due to the setting of the flushing aid valve. On the other hand, the ordinary drain valve of the existing water tank flushing device can be replaced as a whole with the drain valve and flushing aid valve of the present invention to improve the flushing effect and facilitate retrofit or repair with low costs.

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 

FIG. 1 is a schematic diagram of a three-dimensional structure behind a front wall of a hidden water tank in Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of a three-dimensional structure of a drain valve and a flushing aid valve in Embodiment 1 of the present invention (in the figure, a limit member is located at a limiting position, a second floating bucket is located at a low position (specifically at a first falling position), a valve core is located at a descending position, and an abutting portion is located at a first position);

FIG. 3 is a cross-sectional view of the drain valve and the flushing aid valve in Embodiment 1 of the present invention (in the figure, a water stop member is located at a water stop position, the limit member is located at the limiting position, the second floating bucket is located at the low position (specifically at the first falling position), and the valve core is located at the descending position);

FIG. 4 is a partially enlarged view at part A in FIG. 3;

FIG. 5 is a first schematic diagram of a usage state in Embodiment 1 of the present invention (in the figure, the limit member is located at a yielding position, the second floating bucket floats to a high position, the valve core is located at an ascending position, and the abutting portion is located at the first position);

FIG. 6 is a second schematic diagram of a usage state in Embodiment 1 of the present invention (in the figure, the limit member is located at the yielding position, the second floating bucket floats to the high position, and the valve core is located at the ascending position);

FIG. 7 is a third schematic diagram of a usage state in Embodiment 1 of the present invention (in the figure, the limit member is located at the limiting position, the second floating bucket is located at the low position (specifically at a second falling position), and the valve core is located at the ascending position and is about to fall);

FIG. 8 is a fourth schematic diagram of a usage state in Embodiment 1 of the present invention (in the figure, the limit member is located at the limiting position, the second floating bucket is located at the low position (specifically at the second falling position), the valve core is in a descending process, and the abutting portion is located at a second position);

FIG. 9 is a schematic diagram of a three-dimensional structure of a drain valve and a flushing aid valve in Embodiment 2 of the present invention (in the figure, a limit member is located at a limiting position, a second floating bucket is located at a low position (specifically at a first falling position), and a valve core is located at a descending position);

FIG. 10 is a partially enlarged view at part B in FIG. 9;

FIG. 11 is a schematic diagram of a decomposition structure in Embodiment 2 of the present invention;

FIG. 12 is a first schematic diagram of a usage state in Embodiment 2 of the present invention (in the figure, the limit member is located at a yielding position, the second floating bucket floats to a high position, and the valve core is located at an ascending position);

FIG. 13 is a second schematic diagram of a usage state in Embodiment 2 of the present invention (in the figure, the limit member is located at the yielding position, the second floating bucket floats to the high position, and the valve core is located at the ascending position);

FIG. 14 is a third schematic diagram of a usage state in Embodiment 2 of the present invention (in the figure, the limit member is located at the limiting position, the second floating bucket is located at the low position (specifically at a second falling position), and the valve core is located at the ascending position and is about to fall or the valve core is located at the descending position);

FIG. 15 is a fourth schematic diagram of a usage state in Embodiment 2 of the present invention (in the figure, the limit member is located at the limiting position, the second floating bucket is located at the low position (specifically at the second falling position), and the valve core is located at the ascending position and is about to fall or the valve core is located at the descending position);

FIG. 16 is a schematic diagram of a three-dimensional structure behind a front wall of a hidden water tank in Embodiment 3 of the present invention;

FIG. 17 is a schematic diagram of a three-dimensional structure of a drain valve and a flushing aid valve in Embodiment 3 of the present invention;

FIG. 18 is a cross-sectional view of the drain valve and the flushing aid valve in Embodiment 3 of the present invention; and

FIG. 19 is a schematic diagram of a three-dimensional structure of a drain valve and a flushing aid valve in Embodiment 4 of the present invention.

Reference numerals are described as follows:

[0034] 1 - water tank, 11 - water storage chamber, 2 - flow pipe, 21 - overflow gap, 3 - drain valve, 31 - second valve body, 32 - valve core, 321 - valve rod, 322 - valve plate, 33 - base, 331 - drain channel, 4 - flushing aid valve, 411 - second floating bucket, 412 - movable member, 413 - limit member, 414 - first elastic member, 415 - sealing pad, 416 - screw, 42 - first valve body, 421 - water inlet channel, 422 - water outlet channel, 423 - reservoir chamber, 43 - water stop member, 44 - back pressure chamber, 45 - pressure relief hole, 46 - piston, 47 - driving mechanism, 5 - first drain pipe, 6 - water guide pipe, 7 - abutting portion, 8 - water inlet valve, 9 - water replenishment pipe, 10 - overflow pipe, 20 - button.

DETAILED DESCRIPTION

[0035] The following provides a further detailed explanation of the present invention in conjunction with the accompanying drawings and embodiments. However, a water tank flushing device for improving flushing capability and a toilet with the same are not limited to the embodiments.

Embodiment 1

[0036] As shown in FIG. 1 to FIG. 8, a water tank flushing device for improving flushing capability in this embodiment comprises a water tank 1, a drain valve 3, a flushing aid valve 4, and a drain pipe. The water tank 1 has a water storage chamber 11, the drain valve 3 is arranged in the water storage chamber 11 for controlling the water tank to drain water 1, the flushing aid valve 4 has a water inlet channel 421 and a water outlet channel 422, a drain channel 331 of the drain valve 3 is in communication with a toilet bowl (not shown) of a toilet (not shown) through the drain pipe, the water inlet channel 421 is in communication with a water source (not shown), an outlet end of the water outlet channel 422 is located in the water storage chamber 11, and pressure water flowing out of the water outlet channel 422 flows to the toilet bowl through the drain channel 331. In this embodiment, the flushing aid valve 4 is provided, the water inlet channel 421 of the flushing aid valve 4 is in communication with the water source, and pressure water flowing out of the water outlet channel 422 of the flushing aid valve 4 is discharged to the toilet bowl to assist in flushing the toilet bowl, which can effectively improve the flushing effect of an existing water tank flushing device with a low water tank position. In addition, the pressure water flowing out of the water outlet channel 422 flows to the toilet bowl through the drain channel 331 of the drain valve 3. On the one hand, the water tank flushing device does not need to be provided with an additional through hole on the wall of the water tank for guiding the water from the water outlet channel to a pipe of the toilet bowl, which can avoid the hidden danger of water leakage from the water tank in the presence of a pipe passing through the water tank due to the setting of the flushing aid valve. On the other hand, the ordinary drain valve of the existing water tank flushing device can be replaced as a whole with the drain valve and flushing aid valve of the present invention to improve the flushing effect and facilitate retrofit or repair with low costs.

[0037] As shown in FIG. 1 to FIG. 8, in this embodiment, a flow pipe 2 arranged in the water storage chamber 11 is further comprised, that is, an inlet end and an outlet end of the flow pipe 2 are both located in the water storage chamber 11. The outlet end of the flow pipe 2 is in communication with the drain channel 331, and the pressure water flowing out of the water outlet channel 422 flows into the toilet bowl through the flow pipe 2 and the drain channel 331. Therefore, an additional hole through which the flow pipe 2 passes is not needed on a wall of the water tank 1, thereby avoiding the risk of water leakage from the water tank 1 due to the setting of the flushing aid valve 4.

[0038] As shown in FIG. 1 to FIG. 8, in this embodiment, the flow pipe 2 is integrally formed with the drain valve 3; the drain valve 3 comprises a base 33 arranged on a bottom wall of the water tank 1 and a main valve mounted on the base 33, the base 33 is provided with the drain channel 331, an upper opening of the drain channel 331 forms a drain port (not shown) of the drain valve 3, the drain valve 3 connects or disconnects the water storage chamber 11 and the drain channel 331 by opening or closing the drain port, and a lower opening of the drain channel 331 is in communication with the drain pipe; the outlet end of the flow pipe 2 is in communication with the drain channel 331 through the drain port, and then the flow pipe 2 is in communication with the toilet bowl through the drain channel 331 and the drain pipe in sequence.

[0039] Specifically, in this embodiment, the main valve comprises a second valve body 31 mounted on the base 33 and a valve core 32 arranged in the second valve body 31 and capable of moving up and down between an ascending position and a descending position, the valve core 32 comprises a valve rod 321 and a valve plate 322 connected to a bottom end of the valve rod 321, the valve plate 322 fits the opening and closing of the drain port of the drain valve 3, and the flow pipe 2 is integrally formed on the valve rod 321 of the drain valve 3, thereby making the structure of the drain valve 3 more compact; the flow pipe 2 (valve rod 321) is vertically arranged in the second valve body 31 of the drain valve 3, which can reduce turning of a water guide pipe 6 as described below and is beneficial to avoiding kinetic energy loss of water flow; when the valve core 32 is located at the descending position, the valve plate 322 closes the drain port, thereby closing the drain channel 331 to disconnect the water storage chamber 11 and the drain channel 331; when the valve core 32 is located at the ascending position, the valve plate 322 opens the drain port, thereby opening the drain channel 331 to connect the water storage chamber 11 and the drain channel 331. Alternatively, in other embodiments, a side opening may be provided on a side wall of the drain channel, and the outlet end of the flow pipe is in communication with the drain channel through the side opening, so that the pressure water flowing out of the water outlet channel can flow into the toilet bowl through the flow pipe and the drain channel. In this case, the flow pipe can be integrally formed on the base of the drain valve.

[0040] As shown in FIG. 1 to FIG. 8, in this embodiment, the inlet end of the flow pipe 2 is located above a normal working water level of the water storage chamber 11, and the inlet end of the flow pipe 331 can be in communication with an upper part of the water storage chamber 11 to serve as an overflow pipe of the water tank 1. When the water level in the water storage chamber 11 is higher than its normal working water level, the water in the water storage chamber 11 can be discharged through the overflow pipe (namely, the flow pipe 2), thereby achieving an overflow function of the water tank 1. When this embodiment is specifically implemented, an overflow pipe provided on an existing ordinary drain valve may be directly used as the flow pipe 2. In this case, the existing drain valve with the overflow pipe can be directly used as the drain valve of the present invention without retrofitting the drain valve, with low cost.

[0041] In this embodiment, a water guide pipe 6 is further comprised, the outlet end of the water outlet channel 422 is in communication with an inlet end of the water guide pipe 6, and an outlet end of the water guide pipe 6 passes through the overflow pipe (namely, the flow pipe 2) and then is directly or indirectly in communication with the toilet bowl, so that the pressure water flowing out of the water outlet channel 422 flows to the toilet bowl through the overflow pipe (namely, the flow pipe 2). The water guide pipe 6 is fixed opposite to the base 33 of the drain valve 3, and an overflow gap 21 connecting the water storage chamber 11 and the toilet bowl is formed between a wall of the water guide pipe 6 and a wall of the overflow pipe 2.

[0042] Specifically, in this embodiment, the overflow gap 21 connects the water storage chamber 11 and the drain channel 331, thereby connecting the water storage chamber 11 and the toilet bowl. When the water level in the water storage chamber 11 is higher than its normal working water level, the water in the water storage chamber 11 flows out through the overflow gap 21 to the drain channel 331 and finally flows to the toilet bowl through the drain pipe.

[0043] As shown in FIG. 1, in this embodiment, the drain pipe comprises a first drain pipe 5 and a second drain pipe (not shown, the second drain pipe may be integrally or independently formed with a seat (not shown) of the toilet) arranged on the seat of the toilet, and the lower opening of the drain channel 331 is in communication with the toilet bowel through the first drain pipe 5 and the second drain pipe in sequence; the outlet end of the water guide pipe 6 passes through the overflow pipe (namely, the flow pipe 2) and then is in communication with the first drain pipe 5 (that is, the outlet end of the water guide pipe 6 is located in the first drain pipe 5), so that the outlet end of the water guide pipe 6 is indirectly in communication with the toilet bowl through the first drain pipe 5 and the second drain pipe, and the pressure water flowing out of the water outlet channel 422 of the flushing aid valve 4 and the water discharged from the water tank 1 through the drain channel 331 converge in the first drain pipe 5 and then flow together to the toilet bowl, thereby improving the flushing force of the water flowing to the toilet bowl and improving the flushing effect. Alternatively, in other embodiments, the outlet end of the water guide pipe passes through the overflow pipe and the first drain pipe in sequence and then is in communication with the second drain pipe, so that the outlet end of the water guide pipe is indirectly in communication with the toilet bowl through the second drain pipe; or the outlet end of the water guide pipe passes through the overflow pipe, the first drain pipe, and the second drain pipe in sequence and then is directly in communication with the toilet bowl.

[0044] As shown in FIG. 2 to FIG. 8, in this embodiment, a starting mechanism for opening the flushing aid valve 4 and the drain valve 3 is further comprised. The flushing aid valve 4 is arranged in the water storage chamber 11, and the flushing aid valve 4 is mounted together with the drain valve 3. The water source provides pressure water to the water inlet channel 421. The water source may be municipal tap water. The flushing aid valve 4 comprises a control mechanism and a first valve body 42 provided with the water inlet channel 421 and the water outlet channel 422, the control mechanism comprises a second floating bucket 411 capable of moving up and down between a high position and a low position and a limit member 413 movably arranged on the first valve body 42 and capable of moving between a limiting position and a yielding position, and the second floating bucket 411 ascends or descends with the change of the water level in the water storage chamber 11. The limit member 413 at the limiting position can limit the second floating bucket 411 to the low position (when the second floating bucket 411 is located at the low position, a movable member 412 described below closes a pressure relief hole 45). The limit member 413 at the yielding position can release the limiting on the second floating bucket 411, so that the second floating bucket 411 can float to the high position (when the second floating bucket 411 is located at the high position, the movable member 412 described below opens the pressure relief hole 45). When the second floating bucket 411 is located at the high position, the control mechanism controls the connection of the water inlet channel 421 with the water outlet channel 422. When the second floating bucket 411 is located at the low position, the control mechanism controls the disconnection of the water inlet channel 421 from the water outlet channel 422, and the limit member 413 can be reset from the yielding position to the limiting position. The starting mechanism drives the limit member 413 to move from the limiting position to the yielding position to open the flushing aid valve 4. In this embodiment, the overall structure of the flushing aid valve 4 is simple, the control mechanism can reliably control the flushing aid valve 4 to open and close, and the flushing aid valve 4 is easy to produce.

[0045] Specifically, in this embodiment, the starting mechanism directly drives the drain valve 3 to open, and the drain valve 3 is in linkage fit with the limit member 413. When the driving mechanism drives the drain valve 3 to open the drain channel 331 to open the drain valve 3, the starting mechanism drives the limit member 413 to move from the limiting position to the yielding position through the drain valve 3 (that is, the starting mechanism indirectly drives the flushing aid valve 4 to open through the drain valve 3). The limit member 413 is rotatably arranged on the first valve body 42. When the second floating bucket 411 is located at the low position, the limit member 413 can be reset from the yielding position to the limiting position under its gravity. Alternatively, in other embodiments, the limit member may be arranged on the first valve body in a sliding manner; or a second elastic member may be arranged between the limit member and the first valve body, and the limit member can be reset from the yielding position to the limiting position under the action of the second elastic member; or the limit member is provided with a first balancing weight, and the limit member can be reset from the yielding position to the limiting position under the action of the first balancing weight.

[0046] As shown in FIG. 2 to FIG. 8, in this embodiment, the flushing aid valve 4 further comprises a water stop member 43 movably arranged on the first valve body 42 and capable of moving between a water inlet position and a water stop position, the water stop member 43 fits the first valve body 42 to enclose a back pressure chamber 44, and a flow channel (not shown) is provided between the water inlet channel 421 and the back pressure chamber 44 to connect the two, and a pressure relief hole 45 is provided on a wall of the back pressure chamber 44; when the water stop member 43 is located at the water inlet position, the water inlet channel 421 is in communication with the water outlet channel 422; when the water stop member 43 is located at the water stop position, the water stop member 43 disconnects the water inlet channel 421 from the water outlet channel 422; when the second floating bucket 411 is located at the high position, the control mechanism opens the pressure relief hole 45 to control the water stop member 43 to move to the water inlet position, thereby controlling the connection of the water inlet channel 421 with the water outlet channel 422; when the second floating bucket 411 is located at the low position, the control mechanism closes the pressure relief hole 45 to control the water stop member 43 to move to the water stop position, thereby controlling the disconnection of the water inlet channel 421 from the water outlet channel 422.

[0047] Specifically, in this embodiment, the water stop member 43 is a water stop pad, the water stop member 43 is provided with a flow hole (not shown), the through hole forms the flow channel, and inlet water in the water inlet channel 421 flows through the flow hole to the back pressure chamber 44. The flushing aid valve 4 in this embodiment is controlled to open and close using the water inlet principle of pressure difference. When the control mechanism opens the pressure relief hole 45, the water stop member 43 moves to the water inlet position under the water pressure of the water inlet channel 421, and the water inlet channel 421 is connected to the water outlet channel 422, thereby achieving water inlet of the flushing aid valve 4. When the control mechanism closes the pressure relief hole 45, the water stop member 43 moves to the water stop position under the back pressure of the back pressure chamber 44, the water stop member 43 cuts off the connection between the water inlet channel 421 and the water outlet channel 422, and the flushing aid valve 4 achieves water stop. The working principle of water stop or water inlet of the flushing aid valve 4 in this embodiment is the same as that of the water inlet valve for controlling water inlet of the existing toilet water tank, is a well-known technology in this field, and will not be elaborated here.

[0048] As shown in FIG. 2 to FIG. 8, in this embodiment, the control mechanism further comprises a movable member 412 movably arranged on the first valve body 42 and fitting the opening and closing of the pressure relief hole 45, and the second floating bucket 411 is in linkage fit with the movable member 412; when the second floating bucket 411 ascends to the high position, the movable member 412 is linked to open the pressure relief hole 45; when the second floating bucket 411 is located at the low position, the movable member 412 closes the pressure relief hole. Specifically, in this embodiment, a first elastic member 414 is provided between the movable member 412 and the first valve body 42, and the first elastic member 414 is specifically a spring. When the second floating bucket 411 is located at the low position, the movable member 412 can be reset to the position under the action of the first elastic member 414 to the position where the pressure relief hole 45 is closed.

[0049] As shown in FIG. 2 to FIG. 8, in this embodiment, the low position comprises a first falling position and a second falling position, and the first falling position is higher than the second falling position; after the water tank 1 finishes drainage, the second floating bucket 411 falls to the second falling position along with the water level of the water tank 1; in the water inlet process of the water tank 1, the second floating bucket 411 rises with the water level of the water tank 1 and is limited to the first falling position by the limit member 413 at the limiting position; when the second floating bucket 411 is located at the first falling position (at this time, the second floating bucket 411 does not completely fall, and the second floating bucket 411 is still in a floating state due to the buoyancy of water), the movable member 412 tightly presses against the first valve body 42 and closes the pressure relief hole 45 under the elastic force of the first elastic member 414; when the second floating bucket 411 is located at the second falling position (at this time, the second floating bucket 411 completely falls), the movable member 412 tightly presses against the first valve body 42 and closes the pressure relief hole 45 under the combined action of the elastic force of the first elastic member 414 and the gravity of the second floating bucket 411. In this embodiment, after the second floating bucket 411 descends to the first falling position, as the water level in the water storage chamber 11 decreases, the second floating bucket 411 continues to descend to the second falling position, so that the limit member 413 can be better reset to the limiting position.

[0050] Specifically, in this embodiment, the movable member 412 is a swing rod rotatably arranged on the first valve body 42, one end of the swing rod is in linkage fit with the second floating bucket 411, the other end of the swing rod fits the opening and closing of the pressure relief hole 45, and a middle part of the swing rod is rotatably connected to the first valve body 42. In this embodiment, the control mechanism further comprises a screw 416, the second floating bucket 411 is specifically connected to one end of the swing rod (namely, the movable member 412) through the screw 416, the limit member 413 at the limiting position can be in limiting fit with a top of the screw 416 to limit the second floating bucket 411 to the first falling position, the other end of the swing rod is provided with a sealing pad 415 capable of fitting the opening and closing of the pressure relief hole 45, and the sealing pad 415 and the first elastic member 414 are located at the same end of the swing rod 412. The sealing pad 415 capable of fitting the opening and closing of the pressure relief hole 45 is provided on the swing rod, so that the swing rod can fit the opening and closing of the pressure relief hole 45 more reliably. Alternatively, in other embodiments, the movable member may be arranged on the first valve body in a sliding manner.

[0051] As shown in FIG. 1 to FIG. 8, in this embodiment, the valve core 32 is provided with an abutting portion 7. When the starting mechanism drives the valve core 32 to ascend from the descending position to the ascending position (that is, the drain valve 3 opens the drain channel 331), the valve core 32 can drive the limit member 413 to move from the limiting position to the yielding position through the abutting fit of the abutting portion 7 with the limit member 413 to release the limiting on the second floating bucket 411, then when the starting mechanism drives the valve core 32 to open the drain channel 331 to open the drain valve 3, the starting mechanism drives the limit member 413 to move from the limiting position to the yielding position through the valve core 32 of the drain valve 3, so that the second floating bucket 411 can float to the high position and drive the swing rod to swing to open the pressure relief hole 45, the water inlet channel 421 is connected to the water outlet channel 422, and the flushing aid valve 4 can be synchronously opened while the drain valve 3 starts drainage to jointly flush the toilet bowl.

[0052] Specifically, in this embodiment, the abutting portion 7 is rotatably arranged on the valve core 32 and can rotate between a first position and a second position, and the abutting portion 7 is rotatably arranged at a top end of the valve rod 321; when the abutting portion 7 is located at the first position, the valve core 32 can drive the limit member 413 to move from the limiting position to the yielding position through the abutting fit of the abutting portion 7 with the limit member 413; after the valve core 32 drives the limit member 413 to move from the limiting position to the yielding position, the abutting portion 7 loses the abutting fit with the limit member 413; in the process of resetting the valve core 32 from the ascending position to the descending position, the abutting portion 7 abuts against the limit member 413 and rotates from the first position to the second position to yield the limit member 413, so that the valve core 32 can continue to descend and smoothly reset to the descending position; when the valve core 32 is reset to the descending position, the abutting portion 7 can be reset from the second position to the first position. Specifically, in this embodiment, the abutting portion 7 can be reset from the second position to the first position under its gravity. Alternatively, in other embodiments, a third elastic member may be provided between the abutting portion and the valve core, and the abutting portion can be reset from the second position to the first position under the action of the third elastic member; or the abutting portion is provided with a second balancing weight, and the abutting portion can be reset from the second position to the first position under the action of the second balancing weight.

[0053] In this embodiment, as shown in FIG. 1, a water inlet valve 8 is provided in the water storage chamber 11, and a water inlet of the water inlet valve 8 is also in communication with the water source.

[0054] This embodiment further provides a toilet (not shown), comprising a seat provided with a toilet bowl and the water tank flushing device for improving flushing capability described in any of the above.

[0055] The working principle of this embodiment is briefly described as follows:

[0056] In an initial state (namely, a normal state), water is stored in the water storage chamber 11. As shown in FIG. 2 to FIG. 4, the valve core 32 of the drain valve 3 is located at the descending position to close the drain port (namely, close the drain channel 331), the drain valve 3 stops water, the abutting portion 7 is located at the first position, the limit member 413 is located at the limiting position, and the second floating bucket 411 is located at the low position (specifically at the first falling position). At this time, the second floating bucket 411 does not completely fall, the second floating bucket 411 is still in a floating state due to the buoyancy of water, but the second floating bucket 411 is limited by the limit member 413 to remain in the first falling position, the sealing pad 415 on the movable member 412 tightly presses against the first valve body 42 and closes the pressure relief hole 45 under the elastic force of the first elastic member 414, the water stop member 43 moves to the water stop position under the back pressure of the back pressure chamber 44 to cut off the connection between the water inlet channel 421 and the water outlet channel 422, and the flushing aid valve 4 stops water;

[0057] When flushing, the starting mechanism drives the valve core 32 of the drain valve 3 to ascend from the descending position to open the drain port (namely, open the drain channel 331) to open the drain valve 3, thereby controlling the water tank 1 to drain water. In the ascending process of the valve core 32, as shown in FIG. 5 and FIG. 6, the abutting portion 7 on the valve core 32 is in abutting fit with the limit member 413 to drive the limit member 413 to rotate from the limiting position to the yielding position. At this time, the limit member 413 releases the limiting on the second floating bucket 411, the second floating bucket 411 floats under the buoyancy of water, the second floating bucket 411 drives one end of the movable member 412 to lift up through the screw 416, the sealing pad 415 on the other end of the movable member 412 opens the pressure relief hole 45, and the first elastic member 414 is compressed. After the second floating bucket 411 ascends, the limit member 413 is maintained at the yielding position through the screw 416, the water stop member 43 moves to the water inlet position under the water pressure of the water inlet channel 421, the water inlet channel 421 is connected to the water outlet channel 422, and the flushing aid valve 4 is controlled to open while the drain valve 3 is opened, so that the water discharged from the drain channel 331 of the drain valve 3 and the water discharged from the water outlet channel 422 of the flushing aid valve 4 converge in the first drain pipe 5 and then flow together to the toilet bowl for flushing, thereby greatly improving the flushing force and improving the flushing effect. As shown in FIG. 5, after the valve core 32 drives the limit member 413 to rotate from the limiting position to the yielding position, the abutting portion 7 loses the abutting fit with the limit member 413, and the valve core 32 continues to ascend to the ascending position to complete the opening of the drain valve 3;

[0058] When the water level in the water storage chamber 11 drops to a certain height, the second floating bucket 411 descends first. After the second floating bucket 411 descends to the first falling position, as the water level in the water tank 1 continues to drop, as shown in FIG. 7, after the water tank 1 finishes drainage, the second floating bucket 411 descends to the second falling position. At this time, the second floating bucket 411 completely falls, the second floating bucket 411 is no longer subject to the buoyancy of water, and the limit member 413 is reset from the yielding position to the limiting position under its gravity to limit the second floating bucket 411 to float to the high position when water enters the water tank 1 next time. Meanwhile, the second floating bucket 411 is linked with the rotation of the movable member 412, so that the sealing pad 415 on the movable member 412 closes the pressure relief hole 45 under the combined action of the gravity of the second floating bucket 411 and the elastic force of the first elastic member 414, and the flushing aid valve 4 stops water. After the second floating bucket 411 descends to the second falling position, the valve core 32 begins to descend. In the process of resetting the valve core 32 from the ascending position to the descending position, as shown in FIG. 8, the abutting portion 7 abuts against the limit member 413 and rotates from the first position to the second position to yield the limit member 413, so that the valve core 32 can be smoothly reset to the descending position to close the drain port of the drain valve 3. After the valve core 32 is reset to the descending position (that is, the drain valve 3 closes the drain port), the abutting portion 7 rotates and is reset from the second position to the first position under its gravity. Subsequently, the water inlet valve 8 is opened to replenish water to the water storage chamber 11. As the water level in the water storage chamber 11 rises, the second floating bucket 411 floats from the second falling position to the first falling position due to the buoyancy of water, the limit member 413 at the limiting position limits the second floating bucket 411 to the first falling position, and the water tank flushing device returns to its initial state.

[0059] In other embodiments, the outlet end of the flow pipe passes through the drain channel and then is directly or indirectly in communication with the toilet bowl, and the pressure water flowing out of the water outlet channel can also flow to the toilet bowl through the drain channel, specifically as follows: after the outlet end of the flow pipe passes through the drain port and the lower opening of the drain channel in sequence, the outlet end of the flow pipe is in communication with the toilet bowl directly to indirectly through the drain pipe; or a side opening may be provided on a side wall of the drain channel, and after the outlet end of the flow pipe passes through the side opening and the lower opening of the drain channel in sequence, the outlet end of the flow pipe is in communication with the toilet bowl directly to indirectly through the drain pipe.

[0060] In other embodiments, the following settings may be used: when the second floating bucket is located at the low position, the movable member can be reset under its gravity to the position where the pressure relief hole is closed; and further, when the second floating bucket is located at the first falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the gravity of the movable member; when the second floating bucket is located at the second falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the combined action of the gravity of the movable member and the gravity of the second floating bucket.

[0061] In other embodiments, the following settings may be used: the movable member is provided with a third balancing weight, and when the second floating bucket is located at the low position, the movable member can be reset under the action of the third balancing weight to the position where the pressure relief hole is closed; and further, when the second floating bucket is located at the first falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the gravity of the third balancing weight; when the second floating bucket is located at the second falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the combined action of the gravity of the third balancing weight and the gravity of the second floating bucket.

[0062] In other embodiments, the following settings may be used: magnetic structures that attract or repel each other are provided between the movable member and the first valve body; when the second floating bucket is located at the low position, the movable member can be reset under the magnetic force of the magnetic structures to the position where the pressure relief hole is closed; and further, when the second floating bucket is located at the first falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the magnetic force of the magnetic structures; when the second floating bucket is located at the second falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the combined action of the magnetic force of the magnetic structures and the gravity of the second floating bucket.

[0063] In other embodiments, the abutting portion may be fixedly arranged at the top end of the valve rod, rather than rotatably arranged at the top of the valve rod. In this case, when the valve core is located at the ascending position, the abutting portion always abuts against the limit member, so that the limit member is kept at the yielding position. After the valve core is reset to the descending position, the limit member can be reset to the limiting position under its gravity.

Embodiment 2

[0064] This embodiment is substantially the same as Embodiment 1, and its differences are as follows:
As shown in FIG. 9 to FIG. 15, in this embodiment, the flow pipe is independently formed and then mounted on the drain valve 3, specifically mounted on the base 33 of the drain valve 3; a side opening (not shown) is provided on a side wall of the drain channel 331, and the outlet end of the flow pipe is in communication with the drain channel 331 through the side opening; pressure water flowing out of the water outlet channel 422 flows into the toilet bowl through the flow pipe, so that the pressure water flowing out of the water outlet channel 422 can flow to the toilet bowl through the drain channel 331. Specifically, in this embodiment, the outlet end of the flow pipe extends into the drain channel 331 after passing through the side opening.

[0065] As shown in FIG. 9 to FIG. 15, in this embodiment, the inlet end of the flow pipe is in communication with the outlet end of the water outlet channel 422, so that the pressure water flowing out of the water outlet channel 422 can flow into the toilet bowl through the flow pipe. The flow pipe is independent of an overflow pipe 10 of the water tank 1, the overflow pipe 10 is mounted on the base of the drain valve 3, and an outlet end of the overflow pipe 10 is directly in communication with the drain channel 331.

[0066] As shown in FIG. 9 to FIG. 15, in this embodiment, one end of the swing rod (namely, the movable member 412) is in linkage fit with the second floating bucket 411, the other end of the swing rod is rotatably connected to the first valve body 42, a middle part of the swing rod fits the opening and closing of the pressure relief hole 45, and a sealing pad 415 is arranged at the middle part of the swing rod. One end of the swing rod (namely, the movable member 412) is specifically in linkage fit with the second floating bucket 411 through a screw 416.

[0067] As shown in FIG. 9 to FIG. 15, in this embodiment, the starting mechanism drives the valve core 32 of the drain valve 3 and the limit member 413 to move respectively. When the starting mechanism drives the drain valve 3 to open the drain channel 331 to open the drain valve 3, the starting mechanism directly drives the limit member 413 to move from the limiting position to the yielding position. Specifically, in this embodiment, the starting mechanism comprises a button 20 in abutting fit with the limit member 413, and the button 20 is linked with the valve core 32. In the process of pressing the button 20 to link the valve core 32 to ascend from the descending position to the ascending position to open the drain valve 3, the button 20 is in abutting fit with the limit member 413 to drive the limit member 413 to move from the limiting position to the yielding position, thereby directly driving the limit member 413 to move from the limiting position to the yielding position in the process of opening the drain valve 3 by the starting mechanism. After the valve core 32 ascends to the ascending position, the button 20 can be automatically reset.

[0068] In this embodiment, the remaining parts have the same structures and principles as Embodiment 1, and will not be repeated here.

[0069] In other embodiments, the starting mechanism comprises a first starting mechanism (not shown) and a second starting mechanism (not shown) independent of each other, the first starting mechanism is used for driving the drain valve to open the drain channel to open the drain valve, and the second starting mechanism is used for driving the limit member to move from the limiting position to the yielding position. Advantages of such design are as follows: when the first starting mechanism and the second starting mechanism are driven simultaneously, the flushing aid valve can be used to assist in flushing while the drain valve controls the water tank to drain water; when only the first starting mechanism is driven, the flushing aid valve does not work, only the drain valve controls the water discharged from the water tank to flush the toilet, and users can choose whether to use the flushing aid valve for assisting in flushing according to their needs.

Embodiment 3

[0070] This embodiment is substantially the same as Embodiment 1, and its differences are as follows:
As shown in FIG. 9 to FIG. 11, in this embodiment, the flushing aid valve 4 comprises a first valve body 42 with a reservoir chamber 423, a piston 46 movably arranged in the reservoir chamber 423, and a driving mechanism 47 in driving connection with the piston 46; the first valve body 42 is provided with the water inlet channel 421 and the water outlet channel 422, and the water inlet channel 421 and the water outlet channel 422 are both in communication with the reservoir chamber 423; when the driving mechanism 47 drives the piston 46 to move to compress the volume of the reservoir chamber 423, water in the reservoir chamber 423 can be discharged from the water outlet channel 422. With respect to the flushing aid valve 4 in this embodiment, the driving mechanism 47 drives the piston 46 to move to compress the volume of the reservoir chamber 423, and the water in the reservoir chamber 423 is discharged from the water outlet channel 422, so that the flushing aid valve 4 can assist in flushing without being affected by the water pressure of the water source, making the assisted flushing more stable.

[0071] In this embodiment, the driving mechanism 47 is an electric driving mechanism 47. When the drain valve 3 starts drainage, the driving mechanism 47 is electrically controlled to operate, the driving mechanism 47 drives the piston 46 to move to compress the volume of the reservoir chamber 423, and the piston 46 pushes the water in the reservoir chamber 423 to discharge from the water outlet channel 422 under some pressure to assist the water tank 1 in flushing, thereby improving the flushing effect. Alternatively, in other embodiments, the driving mechanism may be in linkage fit with the drain valve, specifically with the valve core of the drain valve, and in the process of opening the drain channel by the drain valve, the driving mechanism drives the piston to move to compress the volume of the reservoir chamber; or the driving mechanism may be in linkage fit with the starting mechanism for opening the drain valve, and in the process of opening the drain valve by the starting mechanism, the driving mechanism drives the piston to move to compress the volume of the reservoir chamber, which can also achieve the opening of the drain valve while the flushing aid valve is controlled to open, so that the water discharged from the water tank through the drain channel of the drain valve and the water discharged from the water outlet channel of the flushing aid valve flush the toilet bowl simultaneously.

[0072] As shown in FIG. 9, in this embodiment, a water outlet of the water inlet valve 8 is in communication with the water inlet channel 421 of the flushing aid valve 4 through a water replenishment pipe 9 to replenish water to the reservoir chamber, that is, the water inlet channel 421 is in communication with the water source through the water inlet valve 8. When water enters the water inlet valve 8, the water is replenished to the reservoir chamber 423 through the water replenishment pipe 9. As shown in FIG. 11, in this embodiment, an outlet of the water inlet channel 421 and an inlet of the water outlet channel 422 are both arranged at a top of the reservoir chamber 423.

[0073] In this embodiment, the remaining parts have the same structures and principles as Embodiment 1, and will not be repeated here.

Embodiment 4

[0074] This embodiment is substantially the same as Embodiment 1, and its differences are as follows:
As shown in FIG. 12, in this embodiment, the flushing aid valve 4 is an electromagnetic valve, the water source provides pressure water to the water inlet channel 421, and the water source may be municipal tap water; when the drain valve 3 starts drainage, the flushing aid valve 4 is opened to assist in flushing the toilet bowl, so that the water discharged from the water tank 1 through the drain channel 331 of the drain valve 3 and the water discharged from the water outlet channel 422 of flushing aid valve 4 flush the toilet bowl simultaneously.

[0075] In this embodiment, the remaining parts have the same structures and principles as Embodiment 1, and will not be repeated here.

Embodiment 5

[0076] This embodiment is substantially the same as Embodiment 1, and its differences are as follows:
In this embodiment (not shown), the flushing aid valve is a water pump, and the water source is either water in the water tank or water outside the water tank. When the drain valve starts drainage, the water pump is activated to assist in flushing the toilet bowl, so that the water discharged from the water tank through the drain channel of the drain valve and the water discharged from the water outlet channel of flushing aid valve flush the toilet bowl simultaneously.

[0077] In this embodiment, the remaining parts have the same structures and principles as Embodiment 1, and will not be repeated here.

Embodiment 6

[0078] This embodiment is substantially the same as Embodiment 1, and its differences are as follows:
In this embodiment (not shown), the outlet end of the water guide pipe is directly in communication with the overflow pipe (namely, the flow pipe), the pressure water flowing out of the water outlet channel flows to the toilet bowel through the overflow pipe (namely, the flow pipe), and the water guide pipe is specifically a flexible pipe; a buoyancy mechanism for controlling the inlet end of the overflow pipe to open and close is further comprised, the water outlet channel of the flushing aid valve is in communication with the overflow pipe through the water guide pipe, the water flowing out of the water outlet channel flows into the drain pipe through the water guide pipe and the overflow pipe in sequence, and the buoyancy mechanism comprises a first floating bucket located above the normal working water level of the water storage chamber; when the first floating bucket is located at a third falling position, the inlet end of the overflow pipe is controlled to close to disconnect the water storage chamber from the overflow pipe; when the first floating bucket is located at a floating position, the inlet end of the overflow pipe is controlled to open to connect the water storage chamber with the overflow pipe.

[0079] Specifically, in this embodiment, an opening may be provided on a side wall of the overflow pipe, and the outlet end of the water guide pipe is in communication with the overflow pipe through the opening; the flow pipe in this embodiment can also be integrally formed on the valve rod of the drain valve; when the valve core is located at the ascending position, the outlet end of the flow pipe is still in communication with the drain channel through the drain port, so that the pressure water flowing out of the water outlet channel flows to the toilet bowl through the drain channel.

[0080] In this embodiment, the remaining parts have the same structures and principles as Embodiment 1, and will not be repeated here.

Embodiment 7

[0081] This embodiment is substantially the same as Embodiment 1, and its differences are as follows:
In this embodiment (not shown), the outlet end of the water guide pipe is directly in communication with the overflow pipe (namely, the flow pipe), the pressure water flowing out of the water outlet channel flows to the toilet bowel through the overflow pipe (namely, the flow pipe), and the water guide pipe is specifically a flexible pipe; a one-way valve arranged at the inlet end of the overflow pipe is further comprised, and the water outlet channel of the flushing aid valve is in communication with the overflow pipe through the water guide pipe, so that the water flowing out of the water outlet channel flows into the drain pipe through the water guide pipe and the overflow pipe in sequence; when the water level in the storage chamber is higher than the inlet end of the overflow pipe, the one-way valve can open the inlet end of the overflow pipe in one direction under the water pressure in the water storage chamber, so that the water in the water storage chamber can flow out from the overflow pipe to the toilet bowl, thereby achieving the overflow function of the water tank; when the water level in the water storage chamber is not higher than the inlet end of the overflow pipe, the one-way valve closes the inlet end of the overflow pipe to prevent the water flowing out of the water outlet channel from flowing into the water storage chamber through the inlet end of the overflow pipe.

[0082] Specifically, in this embodiment, an opening may be provided on a side wall of the overflow pipe, and the outlet end of the water guide pipe is in communication with the overflow pipe through the opening; the flow pipe in this embodiment can also be integrally formed on the valve rod of the drain valve; when the valve core is located at the ascending position, the outlet end of the flow pipe is still in communication with the drain channel through the drain port, so that the pressure water flowing out of the water outlet channel flows to the toilet bowl through the drain channel.

[0083] In this embodiment, the remaining parts have the same structures and principles as Embodiment 1, and will not be repeated here.

[0084] From the above description of the present invention, it can be seen that compared with existing technologies, the flushing aid valve is provided in the present invention, the water inlet channel of the flushing aid valve is in communication with the water source, and pressure water flowing out of the water outlet channel of the flushing aid valve is discharged to the toilet bowl to assist in flushing the toilet bowl, which can effectively improve the flushing effect of an existing water tank flushing device with a low water tank position. In addition, the outlet end of the overflow pipe is in communication with the drain channel, or the outlet end of the overflow pipe is directly or indirectly in communication with the toilet bowl after passing through the drain channel. On the one hand, the water tank flushing device does not need to be provided with an additional through hole on the wall of the water tank for guiding the water from the water outlet channel to a pipe of the toilet bowl, which can avoid the hidden danger of water leakage from the water tank in the presence of a pipe passing through the water tank due to the setting of the flushing aid valve. On the other hand, the ordinary drain valve of the existing water tank flushing device can be replaced as a whole with the drain valve and flushing aid valve of the present invention to improve the flushing effect and facilitate retrofit or repair with low costs.

[0085] The above embodiments are only used for further illustrating a water tank flushing device for improving flushing capability and a toilet with the same of the present invention, but the present invention is not limited to the embodiments. Any simple amendments, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A water tank flushing device for improving flushing capability, comprising a water tank with a water storage chamber, a drain valve arranged in the water storage chamber for controlling the water tank to drain water, a drain pipe connecting a drain channel of the drain valve to a toilet bowl of a toilet, and a flushing aid valve with a water inlet channel and a water outlet channel, wherein the water inlet channel is in communication with a water source, and an outlet end of the water outlet channel is located in the water storage chamber; pressure water flowing out of the water outlet channel flows to the toilet bowl through the drain channel.

2. The water tank flushing device for improving flushing capability according to claim 1, further comprising a flow pipe, wherein an inlet end of the flow pipe is located in the water storage chamber; an outlet end of the flow pipe is in communication with the drain channel, or an outlet end of the flow pipe is directly or indirectly in communication with the toilet bowl after passing through the drain channel; the pressure water flowing out of the water outlet channel flows into the toilet bowel through the flow pipe.

3. The water tank flushing device for improving flushing capability according to claim 2, wherein the flow pipe is independently formed and then mounted on the drain valve; or the flow pipe is integrally formed with the drain valve.

4. The water tank flushing device for improving flushing capability according to claim 2, wherein the drain valve comprises a base arranged on the water tank and a main valve mounted on the base, the base is provided with the drain channel, an upper opening of the drain channel forms a drain port of the drain valve, the drain valve connects or disconnects the water storage chamber and the drain channel by opening or closing the drain port, and a lower opening of the drain channel is in communication with the drain pipe; and
the flow pipe is arranged in the water storage chamber, and the outlet end of the flow pipe is in communication with the drain channel through the drain port; or the flow pipe is arranged in the water storage chamber, a side opening is provided on a side wall of the drain channel, and the outlet end of the flow pipe is in communication with the drain channel through the side opening; or the outlet end of the flow pipe passes through the drain port and the lower opening of the drain channel in sequence and then is directly or indirectly in communication with the toilet bowl; or a side opening is provided on a side wall of the drain channel, and the outlet end of the flow pipe passes through the side opening and the lower opening of the drain channel in sequence and then is directly or indirectly in communication with the toilet bowl.

5. The water tank flushing device for improving flushing capability according to claim 4, wherein the main valve comprises a second valve body and a valve core arranged in the second valve body and capable of moving up and down between an ascending position and a descending position, the valve core comprises a valve rod and a valve plate connected to a bottom end of the valve rod, the flow pipe is integrally formed on the valve rod, and the outlet end of the flow pipe is in communication with the drain channel through the drain port; when the valve core is located at the descending position, the valve plate closes the drain port; when the valve core is located at the ascending position, the valve plate opens the drain port.

6. The water tank flushing device for improving flushing capability according to any one of claims 2-5, wherein the inlet end of the flow pipe is located above a normal working water level of the water storage chamber, and the inlet end of the flow pipe can be in communication with the water storage chamber to serve as an overflow pipe of the water tank; or the inlet end of the flow pipe is in communication with the outlet end of the water outlet channel, and the flow pipe is independent of an overflow pipe of the water tank.

7. The water tank flushing device for improving flushing capability according to claim 6, wherein when the flow pipe serves as the overflow pipe of the water tank, the device further comprises a water guide pipe, and the outlet end of the water outlet channel is in communication with an inlet end of the water guide pipe; and
an outlet end of the water guide pipe passes through the overflow pipe and then is directly or indirectly in communication with the toilet bowl, and an overflow gap connecting the water storage chamber and the toilet bowl is formed between the water guide pipe and the overflow pipe; or an outlet end of the water guide pipe is directly in communication with the overflow pipe.

8. The water tank flushing device for improving flushing capability according to claim 7, wherein the drain pipe comprises a first drain pipe and a second drain pipe that is arranged on a seat of the toilet, and the drain channel is in communication with the toilet bowl through the first drain pipe and the second drain pipe in sequence; and
the outlet end of the water guide pipe passes through the overflow pipe and then is in communication with the first drain pipe; or the outlet end of the water guide pipe passes through the overflow pipe and the first drain pipe in sequence and then is in communication with the second drain pipe; or the outlet end of the water guide pipe passes through the overflow pipe, the first drain pipe, and the second drain pipe in sequence and then is directly in communication with the toilet bowel.

9. The water tank flushing device for improving flushing capability according to claim 7, wherein the outlet end of the water guide pipe is directly in communication with the overflow pipe;

the device further comprises a buoyancy mechanism for controlling of an inlet end of the overflow pipe to open and close, the buoyancy mechanism comprises a first floating bucket located above the normal working water level of the water storage chamber; when the first floating bucket is located at a third falling position, the inlet end of the overflow pipe is controlled to close to disconnect the water storage chamber from the overflow pipe; when the first floating bucket is in a floating position, the inlet end of the overflow pipe is controlled to open to connect the water storage chamber with the overflow pipe; or

the device further comprises a one-way valve arranged at the inlet end of the overflow pipe; when the water level in the water storage chamber is higher than the inlet end of the overflow pipe, the one-way valve can open the inlet end of the overflow pipe in one direction under water pressure in the water storage chamber, so that water in the water storage chamber can flow out of the overflow pipe; when the water level in the water storage chamber is not higher than the inlet end of the overflow pipe, the one-way valve closes the inlet end of the overflow pipe to prevent water flowing out of the water outlet channel from flowing into the water storage chamber through the inlet end of the overflow pipe.

10. The water tank flushing device for improving flushing capability according to any one of claims 1-3, further comprising a starting mechanism for opening the flushing aid valve and the drain valve, wherein the flushing aid valve is arranged in the water storage chamber, the water source provides pressure water to the water inlet channel, the flushing aid valve comprises a control mechanism and a first valve body provided with the water inlet channel and the water outlet channel, and the control mechanism comprises a second floating bucket capable of moving up and down between a high position and a low position and a limit member movably arranged on the first valve body and capable of moving between a limiting position and a yielding position; the limit member at the limiting position can limit the second floating bucket to the low position; the limit member at the yielding position can release the limiting on the second floating bucket, so that the second floating bucket can float to the high position; when the second floating bucket is located at the high position, the control mechanism controls the connection of the water inlet channel with the water outlet channel; when the second floating bucket is located at the low position, the control mechanism controls the disconnection of the water inlet channel from the water outlet channel, and the limit member can be reset from the yielding position to the limiting position; the starting mechanism drives the limit member to move from the limiting position to the yielding position to open the flushing aid valve; or

the flushing aid valve comprises a first valve body with a reservoir chamber, a piston movably arranged in the reservoir chamber, and a driving mechanism in driving connection with the piston; the first valve body is provided with the water inlet channel and the water outlet channel, both of which are in communication with the reservoir chamber; when the driving mechanism drives the piston to move to compress the volume of the reservoir chamber, water in the reservoir chamber can be discharged from the water outlet channel; or

the flushing aid valve is an electromagnetic valve, and the water source provides pressure water to the water inlet channel; or

the flushing aid valve is a water pump, and the water source is either water in the water tank or water outside the water tank.

11. The water tank flushing device for improving flushing capability according to claim 10, wherein the drain valve is in linkage fit with the limit member; in the process of opening the drain valve by the starting mechanism, the starting mechanism drives the limit member through the drain valve to move from the limiting position to the yielding position; or in the process of opening the drain valve by the starting mechanism, the starting mechanism directly drives the limit member to move from the limiting position to the yielding position; or the starting mechanism comprises a first starting mechanism and a second starting mechanism arranged independently, the first starting mechanism is used for opening the drain valve, and the second starting mechanism is used for driving the limit member to move from the limiting position to the yielding position.

12. The water tank flushing device for improving flushing capability according to claim 10, wherein the flushing aid valve further comprises a water stop member movably arranged on the first valve body and capable of moving between a water inlet position and a water stop position, the water stop member fits the first valve body to enclose a back pressure chamber, a flow channel is provided between the water inlet channel and the back pressure chamber to connect the two, and a pressure relief hole is provided on a wall of the back pressure chamber; when the water stop member is located at the water inlet position, the water inlet channel is in communication with the water outlet channel; when the water stop member is located at the water stop position, the water stop member disconnects the water inlet channel from the water outlet channel; when the second floating bucket is located at the high position, the control mechanism opens the pressure relief hole to control the water stop member to move to the water inlet position; when the second floating bucket is located at the low position, the control mechanism closes the pressure relief hole to control the water stop member to move to the water stop position.

13. The water tank flushing device for improving flushing capability according to claim 12, wherein the control mechanism further comprises a movable member movably arranged on the first valve body and fitting the opening and closing of the pressure relief hole, and the second floating bucket is in linkage fit with the movable member; when the second floating bucket ascends to the high position, the movable member is linked to open the pressure relief hole; when the second floating bucket is located at the low position, the movable member closes the pressure relief hole.

14. The water tank flushing device for improving flushing capability according to claim 13, wherein when the second floating bucket is located at the low position, the movable member can be reset under its gravity to the position where the pressure relief hole is closed; or a first elastic member is provided between the movable member and the first valve body, and when the second floating bucket is located at the low position, the movable member can be reset under the action of the first elastic member to the position where the pressure relief hole is closed; or the movable member is provided with a third balancing weight, and when the second floating bucket is located at the low position, the movable member can be reset under the action of the third balancing weight to the position where the pressure relief hole is closed; or magnetic structures that attract or repel each other are provided between the movable member and the first valve body, and when the second floating bucket is located at the low position, the movable member can be reset under the magnetic force of the magnetic structures to the position where the pressure relief hole is closed.

15. The water tank flushing device for improving flushing capability according to claim 14, wherein the low position comprises a first falling position and a second falling position, and the first falling position is higher than the second falling position; after the water tank finishes drainage, the second floating bucket falls to the second falling position along with the water level of the water tank; in the water inlet process of the water tank, the second floating bucket rises with the water level of the water tank and is limited to the first falling position by the limit member at the limiting position; when the second floating bucket is located at the first falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the gravity of the movable member, the elastic force of the first elastic member, the magnetic force of the magnetic structures, or the gravity of the third balancing weight; when the second floating bucket is located at the second falling position, the movable member tightly presses against the first valve body and closes the pressure relief hole under the combined action of the gravity of the movable member, the elastic force of the first elastic member, the magnetic force of the magnetic structures, or the gravity of the third balancing weight, and the gravity of the second floating bucket.

16. The water tank flushing device for improving flushing capability according to claim 13, wherein the movable member is a swing rod rotatably arranged on the first valve body; and
one end of the swing rod is in linkage fit with the second floating bucket, the other end of the swing rod fits the opening and closing of the pressure relief hole, and a middle part of the swing rod is rotatably connected to the first valve body; or one end of the swing rod is in linkage fit with the second floating bucket, the other end of the swing rod is rotatably connected to the first valve body, and a middle part of the swing rod fits the opening and closing of the pressure relief hole.

17. The water tank flushing device for improving flushing capability according to claim 11, wherein the drain valve comprises a base arranged on the water tank and a main valve mounted on the base, the base is provided with the drain channel, an upper opening of the drain channel forms a drain port of the drain valve, the drain valve connects or disconnects the water storage chamber and the drain channel by opening or closing the drain port, the main valve comprises a second valve body and a valve core arranged on the second valve body and capable of moving up and down between an ascending position and a descending position, and the valve core is provided with an abutting portion; the valve core at the descending position can close the drain port; the valve core at the ascending position can open the drain port; in the process of driving the valve core to ascend from the descending position to the ascending position by the starting mechanism, the valve core can be in abutting fit with the limit member through the abutting portion to drive the limit member to move from the limiting position to the yielding position.

18. The water tank flushing device for improving flushing capability according to claim 17, wherein the abutting portion is rotatably arranged on the valve core and can rotate between a first position and a second position; when the abutting portion is located at the first position, the valve core can be in abutting fit with the limit member through the abutting portion to drive the limit member to move from the limiting position to the yielding position; after the valve core drives the limit member to move from the limiting position to the yielding position, the abutting portion loses the abutting fit with the limit member; in the process of resetting the valve core from the ascending position to the descending position, the abutting portion abuts against the limit member and rotates from the first position to the second position to yield the limit member, so that the valve core can continue to descend; when the valve core is reset to the descending position, the abutting portion can be reset from the second position to the first position; and
the abutting portion can be reset from the second position to the first position under its gravity; or a third elastic member is provided between the abutting portion and the valve core, and the abutting portion can be reset from the second position to the first position under the action of the third elastic member; or the abutting portion is provided with a second balancing weight, and the abutting portion can be reset from the second position to the first position under the action of the second balancing weight.

19. The water tank flushing device for improving flushing capability according to claim 11, wherein the starting mechanism comprises a button in abutting fit with the limit member; and in the process of pressing the button to open the drain valve, the button is in abutting fit with the limit member to drive the limit member to move from the limiting position to the yielding position.

20. The water tank flushing device for improving flushing capability according to claim 10, wherein the limit member can be reset from the yielding position to the limiting position under its gravity; or a second elastic member is provided between the limit member and the first valve body, and the limit member can be reset from the yielding position to the limiting position under the action of the second elastic member; or the limit member is provided with a first balancing weight, and the limit member can be reset from the yielding position to the limiting position under the action of the first balancing weight.

21. The water tank flushing device for improving flushing capability according to claim 10, wherein the limit member is arranged on the first valve body in a rotatable or sliding manner.

22. The water tank flushing device for improving flushing capability according to claim 10, wherein the driving mechanism is an electric driving mechanism; or the driving mechanism is in linkage fit with the drain valve, and in the process of opening the drain port by the drain valve, the driving mechanism drives the piston to move to compress the volume of the reservoir chamber; or the driving mechanism is in linkage fit with the starting mechanism for opening the drain valve, and in the process of opening the drain valve by the starting mechanism, the driving mechanism drives the piston to move to compress the volume of the reservoir chamber.

23. The water tank flushing device for improving flushing capability according to claim 10, wherein a water inlet valve is provided in the water storage chamber, a water inlet of the water inlet valve is in communication with the water source, and a water outlet of the water inlet valve is in communication with the water inlet channel through a water replenishment pipe to replenish water to the reservoir chamber.

24. The water tank flushing device for improving flushing capability according to claim 10, wherein an outlet of the water inlet channel and an inlet of the water outlet channel are both arranged at a top of the reservoir chamber.

25. The water tank flushing device for improving flushing capability according to any one of claims 1-5, wherein the flushing aid valve is arranged in the water storage chamber, and the flushing aid valve is mounted together with the drain valve.

26. A toilet, comprising a seat provided with a toilet bowl and the water tank flushing device for improving flushing capability according to any one of claims 1-25.

Drawing