DEVICE FOR BREAKING UP AND/OR REMOVAL OF IMPURITIES, ESPECIALLY SLUDGES IN TANKS

Description

Field of technology

[0001] The invention concerns the device which breaks up (disrupts) and/or and moves impurities to the sucking opening during the cleaning of the industrial devices, mainly during the removals of sludges in tanks in explosive environment. The device is designed for transfer through the dimensionally limited openings in the tanks and it subsequently allows to effectively clean the surface with a sweep that is broader than the width of the device during its transport into the operation zone.

Prior state of the art

[0002] During the cleaning of industrial devices in the explosive environment, mainly during cleaning tanks in petrochemical industry, a remote controlled trolleys are used, which break up (disrupt) the impurities and sludges on the bottom of the tanks by jets or mechanical means. Subsequently these impurities and sludges are sucked and transported outside the cleaned space. The openings in the tanks which are used for insertion of the remote controlled trolley are relatively small and approach the limit of transversal dimensions, mainly width and height of the remote controlled trolley with accessories. This limits the effective width of the cleaning and requires that the remote controlled trolley moves around the surface more, which decreases the efficiency of the process.

[0003] A solution is known, where the disrupting device (for example, pursuant to SK 288482) is in the horizontal plane rotated on both sides of the remote controlled trolley, which achieves the broader sweep, but its control is more difficult, since the personnel must remotely control the other operational movement, too.

[0004] A solution is desired and not known which will allow for broaden the operational sweep (scope) of the device for breaking up, after the device passes the limiting opening in the tank. In the field of cleaning devices for industrial tanks, or in the field of cleaning devices in general, such device is not known. In the unrelated technical field, which addresses the harvest of crops on the fields, the mowing bars and screw conveyors are used, which alter their effective scope in such a way that to the fixed central zone the lateral parts are attached after the transportation by public roads, which requires, however, manual tending which in case of tanks in explosive environment is not available. During solution pursuant to publication GB 1275492 the tiltably placed lateral parts are used, which carry broadening screw parts, but such arrangement decreases the width of the device at the expense of height and leads to problems during assembly without manual tending. Similarly, the method pursuant to publication WO 2010048695 cannot be applied in the industrial tanks; in this method a stable screw (helix) is used, but it changes the place of release of the material in such a way that it moves the output opening on the canal in which the screw is placed.

[0005] Publication WO2014104897A1 discloses a device according to the preamble of claim 1. It describes a sludge removal pump which comprises a hollow body comprising an inlet and an outlet, at least one piston valve and a feeder device connected anterior to the inlet of the hollow body and configured to direct sludge to the interior of the body. Publication DE19706150A1 describes cleaner appliance for cleansing interior of tank containers which has brushes coupled to a rotary drive. Methods and apparatus according to publication WO2017201232A1 are disclosed for removing materials from a reactor, or other vessel via a robotic or remotely operated device. A vacuum hose is connected to the device for removing the material from the vessel. The device moves around on the surface using motorized screws that grip to the material.

[0006] A new solution is thus needed, which will address the specific problems related to cleaning of industrial tanks, whereby the new device must meet the safety criteria for operation in the explosive environment, preferably pursuant to ATEX standard for zone 0.

Essence of the invention

[0007] The abovementioned deficiencies are significantly remedied by the device for breaking up (disruption) and/or removal of impurities, mainly sludges in tanks, which includes framework, hydraulic engine with the rotational output, screw (helix), where the screw has vane segments radially placed along the circumference of the rotor, where the output of the hydraulic engine is connected with the screw and the screw is rotationally placed on both its ends in the framework in the basically horizontal plane, and where the hydraulic engine is connected with the framework in the axis of the screw, whereby the framework is designed for (adjusted for) the attachment to the self-moving trolley according to this invention, which essence lies in the fact, that the screw is consists of at least two parts which are rotationally coupled, the rotors of the first and second part of the screw are mutually slidably place in the axis of the screw, the first part of the screw has a rotor with the cavity and both parts of the screw are designed for partially insertion of the second rotor into the first rotor, whereby the vane segments of the first part of the screw and the second part of the screw are in the mutually opposition position in the direction of the screw's axis. Moreover, the framework is adjusted for change in the distance of the opposite ends in which the screw is rotationally placed.

[0008] The vane segments of the first part of the screw are in the longitudinal axial place of the screw distanced from the vane segments of the second part of the screw at least at distance corresponding to the length of the insertion of the second rotor to the first rotor. That means that in the individual planes parallel with the axis of the screw the mutual position of the vane segments allows for their approximation and thereby allows to insert the second rotor into the first rotor without the interference of the vane segments. The sufficient distance of the vane segments of the first part of the screw and the oppositely placed vane segments of the second part of the screw in the longitudinal axial plane of the screw ensures that the vane segments do not collied during the insertion to the rotor. The vane segments are arranged, as if, for stacking during the telescopic insertion of the rotors into the screw. The longitudinal axial plane of the screw is any plane in which the axis of the screw lies. The condition of the mutual distance of the points of the opposite vane segments holds for all longitudinal axial planes. The geometry of the vane segments will thus be such that in all longitudinal axial planes the intersection of the surface of the vane segments with the longitudinal axial plane will be sufficiently distanced from the intersection of the surface of the opposite vane segment on the second part of the screw. The vane segments are connected to the rotors in such a way that one rotor can be inserted to the second rotor, for example, the vane segments of the second rotor are connected to the drive disc (carrying disc) and are thus led from the front of the second rotor without the connection to the cylindrical part of the second rotor, so that the cylindrical surface of the second rotor can be inserted inside the first rotor.

[0009] An important feature of the proposed invention is the collapsible (folding) or extendable, respectively, arrangement of the rotor of the screw which has at least two parts which are designed for telescopic ejection and insertion of one into the other. The insertion of the first rotor to the second rotor and vice versa is partial, whereby the vane segments are distributed and connected to the rotors in such a way that there is not mutual collision of the vane segments during the ejection and insertion of the rotors.

[0010] The term "screw" (or helix, or auger) must be interpreted as any rotationally placed element which has vane segments distributed on the rotor, whereby these need not to be arranged into a consistent line of the screw groove, that is, into the line of the geometrically regular screw. The term "screw" in this text is therefore to be understood broadly; it includes an element whose vane segments are only simply askew placed elements such as plates, too, where the rotation of the rotor moves the material captured by the plates. The rotor can have varying cross-section, preferably circular or polygonal cross-section, which can ensure the rotational coupling of the rotors by its shape. The rotational coupling of all rotors of the screw is important so that the output from the hydraulic engine is transferred to the whole screw, preferably without slip, so that the angular position of the vane segments is always ensured.

[0011] During the disruption and removal of impurities, mainly sludges, the vane segments break the adhesion forces in the matter which have been maintained continuously during the storage of various petrochemical products. The broken matter is more easily sucked and moved outside the cleaned tank. The breaking is ensured by repeated submersion and rotation of the vane segments into the material with impurities. At the impurities' height which exceeds the respective outer diameter of the screw, it is preferable if the framework allows for lifting, and the height (level) of the screw can be positioned, too. Thanks to the askew orientation, the vane segments also move the material in the direction of the screw's axis. There need to be no strict procedural dividing line between the processes of disruption and removal, both processes can take place either individually or simultaneously, mainly pursuant to the structure and viscomechanical properties of the impurities. The term "impurities" expressly includes mud, variously viscous sediments, mud dregs and sludges, too.

[0012] The first rotor has a cavity with internal diameter which - with the necessary gap - corresponds to the respective diameter of the second rotor or to the diameter of the part of the second rotor which is inserted into the cavity of the first rotor, respectively. This diametric relationship holds at least for parts which are mutually inserted into each other so that the telescopic structure is created. It is preferable if the cavity is equipped by the inner grooves and, on the other hand, the insertion part of the second rotor is produced by the grooved shaft, which produces rotational connection (coupling) of the first and second rotor. The terms "first" and "second" in this text refer to the part of the screw and the respective rotor, without the distinguishing being related to their order or importance; they are interchangeable in this text. The terms "first" and "second" are therefore used solely for differentiation.

[0013] The hydraulic engine is power supplied from the hydraulic aggregate which drives the self-moving trolley, too. A free branch of the pressure pipeline can be used for propulsion of the hydraulic engine, whereby this branch would with use of classic arm with the suction nozzle been used for the lateral movement of the arm, that is, only movement in the horizontal plane. The hydraulic engine can be connected to the hydraulic aggregate by means of relatively thin hoses, for example DN10, whereby the hydraulic aggregate can be relatively far from the place of cleaning; the possible hose connection can be more than 100 m long.

[0014] The technical solution with the grooved shaft and the inner grooving of the cavity of the first rotor can be supplied also by the sheathing which is fixedly connected with the second rotor, whereby the sheathing adjoins to the outer circumference of the first rotor. The usage of sealing between the sheathing and the outer surface of the first rotor achieves the sealing of the whole group, and the impurities from the outside do not enter into the contact with the components inside.

[0015] In order to ensure partial insertion of the first and second part of the screw, the vane segments of the first part of the screw and the second part of the screw are in the mutually opposite position with the same angle from the longitudinal axial plane of the screw. In the screw axis' direction, the vane segments are distributed in such a way that there is no collision during the insertion, which would limit the scope of insertion. The avoidance of collision is important also to decrease the risk of sparks. It is preferably if the vane segment in the direction of the screw's axis protrudes the front of the respective rotor, whereby the vane segment has a gap produced by the rotor which allows for sliding on of the sheath of the hollow rotor during the withdrawing of the screw, where the end of the vane segment is already in the zone of the hollow rotor.

[0016] A preferable arrangement is also a subject matter of the invention, where the vane segments are connected to the single rotor not directly on the cylindrical circumference, but by means of drive disc (carrying disc). The drive disc is fixedly connected with the rotor and the vane segments are connected to the front of the drive disc, whereby they are oriented in such a way that they as if run out of the circumference of the rotor, but between the outer sheath of the rotor and the vane segments there is a gap onto which the sheath of the neighboring rotor can be slid. The drive disc allows to carry the vane segments basically from the side, thanks to which the vane segments do not enter into the contact with the circumference of the rotor in the "sliding-on" surface.

[0017] The vane segments of the individual rotors are in the withdrawn position as if stacked side by side, that is, they are arranged with similar shape and under the same angle. After the expansion the vane segments are present alongside the whole length of the screw. In order to ensure the continuous movement of the material in the direction of the screw's axis, the vane segments in the expanded state should reach the outer circumference alongside the whole length of the expanded screw. If there were gaps between the edges of the sweeping neighboring vane segments in the expanded position, a cumulation of the material would take place and in this zone the material would have been moved only indirectly, that is, by the pressure of the material entering the zone where the edges of the vane segments directly reach. It is thus necessary to maintain regular distribution of the vane segments in the expanded operational position. This is allowed by attachment of the vane segments to the rotors pursuant to this invention, by which the invention differs from the technical solutions in other fields of technology where the telescopic construction of the screw is used (for example JP2002325510A), which, however, has in the expanded state always only one scope (sweep, grasp) in the plane perpendicular onto the axis of the rotation of the screw, or it has gapes between the individual vane segments. The vane segments according to this invention are distributed in such a way that in the plane perpendicular onto the axis of the rotation of the screw there are at least two, preferably at least four vane segments distributed on the circumference, which significantly increases the disrupting effect even at low rotation speeds of the screw. The low rotation speed is necessary to ensure the safety in the explosive environment. Multiple vane segments on the circumference in a single plane reach into the zone with impurities continuously and subsequently during a single revolution - single turn -, whereby it is simultaneously possible to stack vane segments thanks to their attachment through the drive disc.

[0018] The vane segments can be produced, for example, by shaping from the metal sheet, preferably from stainless metal sheet, and their shape can be multiply folded, whereby at least part of the outer edge of the vane segment creates during the rotation a line that is parallel with the axis of the screw. This straight line defines the line of sweep on the floor of the cleaned surface. This is also the difference as compared to common screw in the conveyors, which touches the circumference only in a single point.

[0019] During the telescopic movement of the first and second part of the screw it is also necessary to ensure the bilateral rotational placement of the screw and therefore the framework is designed for the alteration in the distance of the ends in which the screw is rotationally placed. Such arrangement can be achieved by multiple kinematic means; what is important is that the expansion and withdrawal of the rotors does not lead to overflow or jamming of the mutually sliding rotors. In each position of the rotors the screw is basically in the horizontal position and it is designed for the contact with the floor or the impurities at the bottom of the tanks, respectively. The term "basically horizontal plane" includes horizontal plane with common production and technological margins of error and it also includes position in which the axis of the screw is parallel with the base which is sloped in some angle which still allows for the movement of the trolley on the base.

[0020] In order to improve the sliding effect of the rotating screw and also in order to prevent the material from remaining behind the screw's space, it is preferable if the device is equipped by a plowshare placed behind the screw, that is, between the screw and the framework. The plowshare can be telescopic so that the actual width corresponds to the length of the screw, that is, to the active width of the sweep. It is also preferable if the plowshare has cylindrical sheath which copies the course of the vane segments with the respective gap. In this way, the plowshare creates a partial sheathing of the screw, preferably at least in the angular section of 90°. It is also preferable if the lower edge of the plowshare is equipped by the scraper blade designed for adjacent touch with the floor of the cleaned space, and which is produced from the antistatic material. The sheath of the plowshare can also include suction opening for the connection of the suction pipe or suction hose. The suction opening is in the plowshare placed in place where the material is heading during the rotation of the screw. An underpressure produced for example in the suction dredger, which can be in the larger distance from the cleaned tank, can be used for transfer of the impurities, mainly sludge, in the suction hose.

[0021] The disclosed basic solution with one pair of telescopic rotors allows for movement of the impurities in one direction; in this basic arrangement the suction of the impurities will be located by the end of the screw where the material moves at the given rotation of the screw.

[0022] The basic realization includes one rotational hydraulic engine placed on one side of the screw. In the preferable arrangement two hydraulic engines are used, both placed in the axis of the screw; the first hydraulic engine is placed on one end of the screw, the second hydraulic engine is placed on the opposite end of the screw. Both hydraulic engines can be connected to the framework in such a way that they also fulfill a function of rotational placement of the screw, which leads to spatially economical construction. Both hydraulic engines are mutually connected through rotational couplings of the rotors of the screw and they have the same rotation speed, which is all necessary to achieve the correct mutual position of the vane segments on the neighboring rotors. The part of the body of the stator of the hydraulic engine can be placed inside the second rotor, which leads to spatially economical arrangement. Inside the second rotor can be a significant part of the hydraulic engine's stator, where from the rotor runs the connecting flange of the hydraulic engine with the input and output of the hydraulic propulsion oil. This decreases the difference between the overall width of the device and the effective width of the sweep during cleaning.

[0023] It is also preferable if not only two rotors are used, but if the screw has two pairs of rotors which can be mutually slid in. In this realization it is especially preferably if the pairs are placed mutually mirror-symmetrically and they have differently oriented vane segments pursuant to the central symmetric plane, thanks to which the disrupted material is moving from the edges to the middle of the screw where there is the suction of the impurities, mainly sludges.

[0024] A symmetric arrangement with the two pairs of rotors and two identical hydraulic engines on the sides of the screw is especially preferable. Rotors in the central part of the screw can be produced as a single whole or they can be connected into a single whole, respectively. The symmetric realization has preferably one drive disc in the center of the screw; the vane segments are mirror-symmetrically connected onto the drive disc on both its fronts, whereby the vane segments on the left and on the right of the drive disc have oppositely oriented slope. This significantly contributes to the balancing of the force reactions on the sides of the drive disc in the similar way as in case of arrow gear. In order to improve the solidity of the placement of the vane segments, the connection of the vane segments with the drive disc can be reinforced with struts.

[0025] With use of the two hydraulic engines both are connected into a single branch of the pressure oil distribution, whereby both hydraulic engines are connected in such a way that even in opposite position (one on the left, the other on the right) they rotate the screw in the same direction. The mechanic coupling of the shafts also ensures the same rotation speed of both engines.

[0026] The symmetric, mirror-like realization of the screw with two hydraulic engines is preferably carried by symmetric framework including transversal beam with connecting element designed for connection with the self-moving trolley. The connecting element can also include transversal horizontal pin and a lever for controlling the tilt of the device. After the connection of the device with the self-moving trolley, the hydraulic or similar linear engine, preferably hydraulic cylinder, whose second end is connected to the self-moving trolley, is connected to the lever. Arms are placed in the pins on the both ends of the transversal beam. In order to achieve precise and fixed guiding of the arms, each arm on the transversal beam is led in the pair of pins which have common, in principle vertical axis. The opposite end of each arm is equipped by hinge for the connection of the rotational placement of the screw. Preferably, a pair of hinges with the common axis is used, too, whereby their axis is also in principle vertical. The rotational placement of the screw is in the preferable compact arrangement produced by the hydraulic engine itself. In such case, both hinges on the arm form a fork in which the hydraulic engine is attached. Both hinges can have adjustable connection with the arms so that the exact mounting position of the screw's axis is possible and therefore the smooth telescopic sliding of the rotors is possible, too.

[0027] In another arrangement the framework can be difference, it can, for example, consists from the transom into which a smaller profile with the respective cross-section is slid, and this telescopically withdraws and expands, whereby the lateral booms carrying the screw's placement protrude forward from the ends of the transom and the inner profile.

[0028] In order to change the length of the screw it is preferable to use hydraulic cylinder which meets the criteria for operation in explosive environment more easily. However, should electric means for operation in zone 0 pursuant to ATEX standard be certified, it is also possible to use electric engine with rack-and-pinion gear and so on. Hydraulic cylinder can be used also since its control can be connected into the hydraulic branch of the hydraulic engine's propulsion. It is not possible the lead independent wiring and piping for the hydraulic cylinder's control; this is important advantage, since the hydraulic wiring and piping from the self-moving trolley into the hydraulic aggregate can often reach 100 m and inclusion of further hydraulic wiring and piping for independent control of hydraulic cylinder into the batch of wirings would increase the weight of the batch and limit the flexibility of the self-moving trolley's movement. In such case the hydraulic cylinder expands in a state where the hydraulic oil is directed into the hydraulic engines in the direction so that the screw rotates in such a way that the material moves into the center towards the suction opening. In the opposite case, if the screw rotates in the opposite direction and the material is pushed from the center to the edges, the hydraulic cylinder withdraws and the scope of the sweep of the screw is shortened. This allows for automatic withdrawal of the framework during the activation of the opposite movement of the screw as compared to the direction which corresponds to gathering (collection) of impurities.

[0029] It is also preferable if the connection of the framework to the self-moving trolley allows for lifting of the devices, that is, for the change of its slope in the longitudinal direction. This tilting movement is used not only during the disruption of the thicker layer of impurities, but also during the transport of the device into the tank. The opening in the tank is in certain height level as compared to the bottom of the tank and the self-moving trolley with the device moves to the tank on the bridge with the askew-positioned approaches where it is preferably to lift the device upwards in order to overcome approach angle.

[0030] The device according to this invention is during its operation in the angle of view of the camera which is usually placed in the self-moving trolley, but which can be moved in the device itself. The personnel of the self-moving trolley controls the process of breaking up and movement of the impurities in the screw and it also watches whether the alien objects are not wound up or present in the screw. Potential misalignment of the device or excess of vibration of the screw will be visible through the camera transmission into the control center.

[0031] A significant feature of the proposed invention is the telescopic construction of the screw, whose expansion and withdrawal are supported by framework with adjustable distance of the placement of the rotational placements of the screw. A telescopic plowshare with the adjustable width can be part of the device. This arrangement improves the efficiency and speed of cleaning, since the operational width of the cleaning is larger than the width of the device during the transit through the entry opening in the respective tank. The expansion or withdrawal of the screw is remote controlled without the need for manual operation. These two steps are one-off at the beginning and end of the cleaning operation. During the cleaning itself there is no need for any other operational movement; the device's increase sweep is permanent. This brings about significant advantages in form of increases efficiency and speed of cleaning; there is no longer any need for horizontal movement of the arm of the trolley. The performance and capacity of the device in the operational state is significantly larger than the dimensional limit set by the size of the opening in the tank, since the device, as compared to the limiting dimensions during transit, increases the size of its sweep after the transit. This principle can be used in other situations, too, for example during the cleaning in buildings with limited width of the door, and so on.

[0032] An important advantage is also realization which meets the criteria for operation in the explosive environment. Individual mutually movable components are produced from sparkless (non-sparking) material or from sparkless material pairs such as stainless steel / bronze, respectively, and the movement of the components is regular, below the speed limit. The symmetric construction with the placement of the screw on both ends and the framework with symmetrically controlled arms is operationally reliable and effective even in rough and polluted environment.

Description of drawings

[0033] The invention is further disclosed by drawings 1 to 11. The particular depicted sizes of components, the arrangement of the framework, the shape of arms and other details, as well as depicted self-moving trolley, are examples only and cannot be interpreted as limiting the scope of protection.

Figure 1 is a block diagram of the expanded screw and the withdrawal of the screw with one pair of rotors. The arrows depict the direction of mutual movement of the rotors. The whole construction as well as the shape of vane segments is significantly simplified in order to increases the clarity of the drawings. The dashed lines denote the overlay of the components during the withdrawal of the rotors. The dimension x denotes the distance of the vane segments of the first part of the screw from the oppositely placed vane segments of the second part of the screw in the longitudinal axial plane of the screw. This dimension is larger than the length of the insertion (withdrawal) of the rotor, so that during the insertion there is no collision of the vane segments.

Figure 2 is a block diagram of the expanded screw with two pairs of rotors, where the central rotors are connected into a single whole. The arrows depict the direction of the mutual movement.

Figure 3 is a spatial view of the remote controlled trolley with the attached device pursuant to the example 1, where there is depicted a state with the withdrawn screw for the transport through the opening in the tank. A camera is connected to the device, whose angle of view is set in such a way that it sees into the operational zone of the device.

Figures 4 and 5 are top view of the device. Figure 4 is withdrawn screw, figure 5 is expanded screw in the operational position. Figures 4 and 5 are depicted in the identical ratio, so that the difference between widths of the device is apparent.

Figure 6 is bottom view of the plowshare with two retractable lateral components and the suction opening.

Figure 7 is an example of framework which has a pair of adjustable hinges on both ends of the arms, whereby a position with the expanded screw is depicted on the drawing. Figure 7 does not include plowshare, or the screw itself with hydraulic engines. The arrows alongside both inner sides of the arms depict the points of connection of the retractable components of the plowshare to the arms, so that during the movement of the arms there is a telescopic movement of the plowshare, too.

Figure 8 is front spatial view of the device in the expanded position.

Figure 9 depicts expanded screw in greater detail.

Figure 10 is a side view of the device which depicts circumferential distribution of the vane segments alongside the rotor's circumference and the position of the arm in the horizontal position.

Figure 11 are cross-sectional views where the sections are led through the axial plane of the screw; in the upper part of the drawing the screw is in withdrawn position, in lower part it is in expanded position. On both drawings, only one side of the device is depicted. The mirroring plane of the construction is defined by the plane of the drive disc, which is depicted on the left edge of the drawings. The lines in the cavity on the bottom drawing, after the pulling out of the shaft, depict the grooving of the cavity.

Examples of realization

Example 1

[0034] The device for breaking up and removal of sludges in tanks has, according to this example pursuant to figures 2 to 11, symmetric construction with two pairs of rotors 21, 22 which form a telescopic screw 1. The screw 1 is rotationally placed on both its ends by means of identical hydraulic motors 5. Roller bearing of the output shaft of the hydraulic engine 5 forms a rotational placement of the screw 1 and this bearing transfers the forces from the screw 1 to the stator part of the hydraulic engine 5 which is attached into the framework 4. Larger part of the hydraulic engine's 5 stator is surrounded by the second rotor 22. The output shaft of the hydraulic engine 5 is fixedly, that is, without the chance for sliding, connected with the shaft 8 inserted into the front 7 of the second rotor 22. The shaft 8 protruding out of the front 7 has grooves on the opposite side, which falls into the inner grooves in the cavity 9 of the first rotor 21. A cylinder 10 is attached to the outer circumference of the front 7, whereby the cylinder 10 covers part of the body of the hydraulic engine 5. In this example, the outer edge of the cylinder 10 is sealed by rotational sealing against the flange on the body of the hydraulic engine 5, which achieves the encasement of the part of the body of the hydraulic engine 5 together with the output shaft, too. Tight encasement of the hydraulic engine is advantageous also in that thanks to the liquid inside the encasement a liquid cap is produced, which improves the safety level of the hydraulic engine 5.

[0035] Hydraulic engines 5 are connected to the hydraulic aggregate by means of DN10 hoses with length of 100 m. Hydraulic engines 5 are connected for the oppositely oriented rotation, so that after their placement on the left and the right they propel the screw 1 in the same sense and with the same rotation speed. Flat quick connectors serve for connection of the hydraulic hoses.

[0036] The grooving of the shaft 8 and corresponding grooving of the cavity 9 allow for smooth sliding of the second rotor 22 into the first rotor 21, that is, movement of the shaft inside the cavity 9 and vice versa. In this example, the sheath 11 protrudes from the front 7, too, and this sheath 11 has cylindrical cross-section and is around the shaft 8 in such a way that the shaft 8 is inside the sheath 11 and they have a common central axis. At the same time, the sheath 11 is adjusted by its dimensions and shape for sliding onto the outer surface of the first rotor 21. The sheath 11 has guiding sliding casing on its edge, which is bronze in this example, which slides alongside the surface of the first rotor 21. The sealing on the edge of the sheath 11 ensures the sealing of the movable group with grooves.

[0037] In this example the first rotor 21 has inner grooves produced in the bronze body of the pipe, and this body is fixedly inserted into the outer stainless steel pipe, whereby this outer pipe connects two first rotors 21 into a single whole. The arrangement of the elements on the opposite side of the screw 1 is same, or is mirror-symmetrical, respectively, to the abovementioned description of one side of the screw 1.

[0038] The drive disc 12 is placed in the center of the screw 1, whereby it is inserted into the reinforcing hoop on the outer pipe of the first rotor 21. Five vane segments 3 run out of both sides of the drive disc 12 and the hoop. The vane segments 3 are led in regular angular pitch alongside the circumference of the first rotor 21. A gap is produced between the vane segments 3 and the outer surface of the first rotor 21, which allows for sheath 11 to slide smoothly on the surface of the first stator protruding from the front 7 of the second stator 22. This allows for the shaft 8 to be inserted into the cavity 9 and, at the same time, for the sheath 11 to slide onto the pipe of the first rotor 21.

[0039] The vane segments 3 are produced from stainless steel metal sheet, the have multiple folds and they are shaped and placed in such a way that the outer edges of the vane segments 3 during rotation produce common cylindrical surface of the screw 1. At the same time, the vane segments 3 have a slope which during the rotation produces a movable effect of the Archimedean screw. The vane segments 3 are connected to the second rotor 22 in such a way that they run out of the cylinder 10 and from the sheath 11, whereby their slope in the longitudinal plane of the screw 1 corresponds to the slope of the vane segments 3 in the first rotor 21, which allows for their stacking closer to each other in the position of withdrawn screw 1.

[0040] Alongside the whole operational length of the screw 1 there is a plowshare 13 which consists of fixedly led central part and of two lateral retractable components. The lateral retractable components are slidably led on the surface of the central part. The plowshare 13 has mainly cylindrical shape which copies the screw 1, whereby it surrounds it in more than 160°, and the bottom part of the plowshare 13 runs through the central longitudinal axis of the screw 1, which ensures that the screw 1 does not directly tough the base of the cleaned space. This rules out the risk of sparks during the touch of the vane segments with the metal bottom. The lateral retractable components are connected with the arms of the framework and they eject or retract during the telescopic movement of the screw 1. On the bottom part the plowshare 13 has plastic scraper blade which is replaceable and which serves for contact with the base. The blade in this example is produced from antistatic plastic PE 1000 AST.

[0041] The basic material of majority of the components in this device according to this example is stainless steel AISI 316. All other movable parts are mounted in bronze slide (plain) bearings.

[0042] The plowshare 13 is attached to the framework 1 by means of two longitudinal wirings and pipes, which are fixedly connected to the transversal beam 14. In the central part of the plowshare 13 there is an opening with the suction throat into which the suction piping or suction hose is connected. In this example, the suction throat is oriented upwards and at the same time askew to the side, so that the suction piping or the suction hose can be led above the trolley 6 outside its central longitudinal axis.

[0043] The framework 4 is construed symmetrically in the same way the screw 1 is arranged symmetrically; the framework 4 includes the transversal beam 14 with the connecting element designed for connection with the self-moving trolley 6. The connecting element in this example consists of horizontal pin and lever for control of the tilt of the device. After the connection of the device with the self-moving trolley 6, a hydraulic linear engine or similarly functioning engine, preferably hydraulic cylinder, whose second end is connected with the self-moving trolley 6, is connected with the lever.

[0044] The transversal beam 14 is oriented in parallel with the axis of the screw 1 and the horizontal plane in which the axis of the screw 1 lies runs through the body of the transversal beam 14. The whole framework 4 is produced in such a way that it does not protrude from the front projection of the screw 1 and the plowshare 13. Arms 15 are placed in the pins on both ends of the transversal beam 14. In order to achieve precise and fixed leading of the arms 15, each arm 15 is led in the transversal beam 14 in the pair of pins which have common, basically vertical axis. The opposite end of each arm 15 is equipped by the hinge 16 for connection into the rotational placement of the screw 1. Preferably, a pair of hinges 16 with the common axis is used, whereby this axis is parallel with the axis of the pins in the transversal beam 14.

[0045] Each arm 15 has a thumb oriented inside, into which a lateral retractable component of the plowshare 13 is connected; during opening or closing of the arms 15 the expansion or withdrawal of the plowshare's 13 width takes place, too. The thumbs on the figure 7 are depicted by arrows.

[0046] The rotational placement of the screw 1 is formed by the hydraulic engine 5. Both hinges 16 on the arm 15 form a fork in which the hydraulic engine 5 is attached, and the fork allows for angular rotation of the flange of the hydraulic engine 5. Thanks to the fork a spatially economical solution is achieved, where the arms 15 on both sides carry the screw 1 but in principle they do not reach into the outer width of the overall device. The width of the device is defined by the distance of the outer walls of the flanges of the hydraulic engines 5. Both hinges 16 in this example are in adjustable connection with the arms 15, which allows for precise setting of the position of the axis of the screw 1 during the mounting of the device, which contributes to the telescopic movement of the rotors 21, 22. The hinges 16 also ensure that no force moments, except for the moment reaction from the rotation of the hydraulic engine 5, are transferred into the framework 4 from the placement of the screw 1. This limits the crossing and jamming during telescopic movement of the rotors 21, 22.

[0047] A hydraulic cylinder transversally placed in the framework 4 in the space between the transversal beam 14 and the plowshare 13 is used for spreading out of the arms 15. Two strips ended by pins run from both ends of the transversal beam 14 towards the plowshare 13. In order to avoid the deformation of the strips inserted in the transversal beam 14, both ends of the strips are equipped by draw rods, preferably through pins. In the pins on both ends of the strips there are tiltably placed levers and into opposite openings in the levers a hydraulic cylinder is connected. The levers are oriented from the plowshare 13 towards the transversal beam 14. Both levers move and spread out during the expansion of the hydraulic cylinder, whereby a short connecting rod is connected to each lever. The second end of the connecting rod is connected to the arm 15. In this arrangement, a desire gear ration between the hydraulic cylinder and the arms 15 is achieved, whereby the hydraulic cylinder is placed close to the transversal beam 14 and does not interfere the sizeable mouth of the suction throat. At the same time, the hydraulic cylinder is inside the spatial structure of the framework 4 and it acts symmetrically upon both arms.

[0048] The hydraulic cylinder is connected in parallel to the hydraulic engines 5 in such a way that during the rotation of the screw 1 in the direction for the transfer of the sludge into the center towards the suction opening the hydraulic cylinder is expanded until the screw 1 achieves its maximal operational width. During the change of the rotation of the screw 1, that is, if, for example, the movement of the sludge should stop and the disruption should intensify, the hydraulic cylinder is pressed and the sweep of the screw 1 decreases. After the stopping of the propulsion of the hydraulic engines 5, the screw 1 remains in the position ready for the transport through the limiting opening in the tank.

[0049] It is a feature of the disclosed kinematic mechanism that all rotational return movements in the slide (plain) bearings do not surpass the angular deviation 90°, usually the deviation is less than 30°. The frequency and speed of movements and the used material pairs, mainly bronze / stainless steel, rule out the mechanically induced sparks.

[0050] The device is intended mainly for breaking up the sludges and moving of the sludges towards the suction opening. It can be used in highly explosive environment, group II, category 1, as a device with high level of protection in the zone 0. In this example, the overall width of the device in the transport stage is 588 mm and in the active operational position the width is 747 mm.

Example 2

[0051] In this example according to figure 1 the device is again, as in the first example, intended for the rotational disruption of the impurities in the explosive environment, and it can be connected to the self-moving trolley 6 as an alternative to the arm with the nozzles. Compared to the previous example, its construction is simple, with the symmetry of the components.

[0052] The transversal beam 14 is a pipe with square cross-section in which the second, smaller pipe, with smaller square cross-section, is inserted. Inside the transversal beam 14 there is a hydraulic cylinder which pulls out or pulls in the second pipe and thereby produced a telescopic arrangement. Two booms are led out from the one side of the pipe, and from the opposite side of the second pipe, whereby the screw 1 is rotationally placed in them.

[0053] The screw 1 in this example is produced from the first rotor 21 and from the second rotor 22, whereby inside the second rotor 22 there is a hydraulic engine 5 (not depicted on the figure 1). The device uses only one hydraulic engine 5 and only one pair of telescopically expanding rotors 21, 22.

Industrial applicability

[0054] Industrial applicability is obvious. According to this invention it is possible to industrially and repeatedly produce and use device for breaking up and/or removal of impurities, mainly sludges in tanks, whereby the device will be attached, for example, to the robotized or remote controlled trolley.

List of symbols

[0055] 

1 - screw

2 - rotor

21 - first rotor

22 - second rotor

3 - vane segments

4 - framework

5 - hydraulic engine

6 - trolley

7 - front

8 - shaft

9 - cavity

10 - cylinder

11 - sheath

12 - drive disc

13 - plowshare

14 - transversal beam

15 - arm

16 - hinge

Claims

1. A device for breaking up and/or removal of impurities, especially sludges in tanks, which includes a framework (4), a hydraulic engine (5) with a rotational output, a screw (1), where the screw (1) has vane segments (3) radially distributed alongside a circumference of a rotor (2), the vane segments (3) are designed for a collection of the impurities, where the output of the hydraulic engine (5) is connected with the screw (1) and the screw (1) is rotationally placed on both its ends in the framework (4) in a basically horizontal plane, and where the hydraulic engine (5) is connected with the framework (4) in an axis of the screw (1), whereby the framework (4) is designed for an attachment in a trolley (6),

is characterized by the fact, that

the screw (1) consists of at least two parts which are rotationally coupled,

rotors (21, 22) of the first and the second part of the screw (1) are mutually slidably placed in the common axis of the screw (1),

both parts of the screw (1) are designed for a partial insertion of the second rotor (22) to the first rotor (21),

the vane segments (3) of the first part of the screw (1) and the oppositely placed vane segments (3) of the second part of the screw (1) are in the longitudinal axial plane of the screw (1) mutually distanced at least at length of the insertion of the second rotor (22) to the first rotor (21),

whereby the framework (4) is designed for an alteration of the distance of the ends in which the screw (1) is rotationally placed.

2. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to the claim 1, is characterized by the fact, that alongside the circumference of the first rotor (21) and/or alongside the circumference of the second rotor (22) there are placed at least two, preferably at least four vane segments (3) in a regular angular pitch.

3. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to the claim 1 or 2, is characterized by the fact, that the vane segments (3) on the first rotor (21) and the vane segments (3) on the second rotor (22) have in a contact plane of the screw (1) an identical slope from the axis of the screw (1).

4. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to any of the claims 1 to 3, is characterized by the fact, that the first rotor (21) has a cavity (9) with an inner grooving into which falls a toothed shaft (8) protruding from the second rotor (22); a sheath (11) is connected to the second rotor (22); the outer circumference of the first rotor (21) is slid onto the sheath (11), preferably the sheath (11) is on its edge equipped by a sealing against a surface of the first rotor (21).

5. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to any of the claims 1 to 4, is characterized by the fact, that the vane segments (3) are connected to the first rotor (21) or the second rotor (22) by means of a drive disc (12), whereby the vane segments (3) are connected to a front of the drive disc (12) in such a way that there is a gap between the surface of the respective rotor (2) and the vane segments (3).

6. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to any of the claims 1 to 5, is characterized by the fact, that the hydraulic engine (5) forms the rotational placement of the screw (1), preferably a part of a stator of the hydraulic engine (5) is inside the second rotor (22) and an outward-oriented flange of the hydraulic engine (5) is connected to the framework (4).

7. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to the claim 6, is characterized by the fact, that an output shaft of the hydraulic engine (5) is connected with the shaft (8) which is placed into a front (7) of the second rotor (22); the shaft (8) has the grooving on an opposite side, which falls into the inner grooving in the cavity of the first rotor (21) and a cylinder (10) is connected to an outer circumference of the front (7), whereby the cylinder (10) covers a part of a body of the hydraulic engine (5), whereby the vane segments (3) of the second part of the screw (1) are connected to the cylinder (10) alongside its circumference; preferably an edge of the cylinder (10) is sealed by the rotational sealing against the body of the hydraulic engine (5) and an inner space between the cylinder (10) and the body of the hydraulic engine (5) is filled with a liquid.

8. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to any of the claims 1 to 7, is characterized by the fact, that it includes a plowshare (13) which is from a side of the framework (4) adjacently placed to the screw (1), whereby the plowshare (13) has a telescopically alterable length of a sweep, and the plowshare (13) is equipped by an opening for a suction of the impurities and/or the sludges.

9. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to the claim 8, is characterized by the fact, that the plowshare (13) surrounds the screw (1) on its circumference in a circular section with an angle at least 90°; a bottom part of the plowshare (13) runs through a vertical central longitudinal plane of the screw (13), and the bottom part of the plowshare (13) has a scraper blade for an adjacent contact with a base, preferably the scraper blade is replaceable and made from an antistatic plastic.

10. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to any of the claims 1 to 9, is characterized by the fact, that it has two hydraulic engines (5) and the screw (1) is arranged symmetrically with two pairs of the rotors (2) slidable mutually into each other, which are mirror-symmetrical pursuant to a central transversal plane of the screw (1), where the first hydraulic engine (5) is partially inserted into the second rotor (22) on one side of the screw (1); this second rotor (22) has the grooved shaft (8), which is slidably placed in the grooved cavity (9) of the first rotor (21), and whereby the second rotor (22) is connected in a single whole with the first rotor (21) on the other side of the screw (1), and where the other side of the screw (1) is arranged symmetrically with the first rotor (21), the shaft (8), the second rotor (22) and the second hydraulic engine (5); preferably both hydraulic engines (5) are connected into a common branch of a hydraulic wiring and piping.

11. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to the claim 10, is characterized by the fact, that it has the drive disc (12) in a center of the screw (1) and on both sides there are the vane segments (3) stemming from the drive disc (12).

12. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to any of the claims 1 to 11, is characterized by the fact, that the framework (4) includes a transversal beam (14) with a connecting element for a connection with the trolley (6); arms (15) are placed on both ends of the transversal beam (14) in pins, where each opposite end of each arm (15) is equipped by a hinge (16) to which the rotational placement of the screw (1) is connected, preferably the hydraulic engine is connected (5), and especially preferably the opposite end of each arm (15) is equipped by two hinges (16).

13. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to any of the claims 1 to 12, is characterized by the fact, that it includes a hydraulic cylinder placed transversally in the framework (4) in a space between the transversal beam (14) and the screw (1); preferably the hydraulic cylinder is connected to the hydraulic branch of a propulsion of the hydraulic engine (5).

14. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to the claim 12or 13, is characterized by the fact, that strips ended by the pins are directed from both ends of the transversal beam (14) towards the screw (1), whereby levers are tiltably placed in the pins and the hydraulic cylinder is connected to ends of the levers, whereby to each lever a connecting rod is connected, and the second end is connected to the arm (15)

15. The device for breaking up and/or removal of the impurities, especially the sludges in the tanks, according to any of the claims 1 to 14, is characterized by the fact, that mutually movable pairs of components are equipped by slide guiding on a basis of a material pair a bronze / a stainless steel.

Ansprüche

1. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks, die eine tragende Konstruktion (4), einen Hydraulikmotor (5) mit einem rotierenden Ausgang, einer Schnecke (1) umfasst, wobei die Schnecke (1) radial um den Umfang des Rotors (2) angeordnete Schaufelsegmente (3) aufweist, die Schaufelsegmente (2) zum Aufnehmen von Verunreinigungen ausgebildet sind, wobei der Ausgang des Hydraulikmotors (5) mit der Schnecke (1) verbunden ist und die Schnecke (1) an ihren beiden Enden in der tragenden Konstruktion (4) in einer im wesentlichen horizontalen Ebene drehbar gelagert ist, und wobei der Hydraulikmotor (5) in der Achse der Schnecke (1) mit der tragenden Konstruktion (4) verbunden ist, wobei die tragende Konstruktion (4) zur Befestigung an dem Wagen (6) ausgebildet ist,
dadurch gekennzeichnet, dass

die Schnecke (1) mindestens von zwei drehbar miteinander verbundenen Teilen besteht,

die Rotoren (21, 22) des ersten und des zweiten Teils der Schnecke (1) in der gemeinsamen Achse der Schnecke (1) gegenseitig verschiebbar gelagert sind,

beide Teile der Schnecke (1) dazu ausgebildet sind, teilweise den zweiten Rotor (22) in den ersten Rotor (21) einzuführen,

die Schaufelsegmente (3) des ersten Teils der Schnecke (1) und die gegenüberliegenden Schaufelsegmente (3) des zweiten Teils der Schnecke (1) in der axialen Längsebene der Schnecke (1) mit einem gegenseitigen Versatz um mindestens die Länge der Einführung des zweiten Rotors (22) in den ersten Rotor (21) entfernt sind,

wobei die tragende Konstruktion (4) zur Änderung des Abstandes von Enden, in den die Schnecke (1) drehbar verlegt ist, ausgebildet ist.

2. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach dem Anspruch 1, dadurch gekennzeichnet, dass mindestens zwei, vorteilhaft mindestens vier Schaufelsegmente (3) am Umfang des ersten Rotors (21) und/oder am Umfang des zweiten Rotors (22) in einem gleichmäßigen Winkelabstand angeordnet sind.

3. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Schaufelsegmente (3) am ersten Rotor (21) und die Schaufelsegmente (3) am zweiten Rotor (22) in der Berührungsebene der Schnecke (1) gleiche Neigung von der Achse der Schnecke (1) aufweisen.

4. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der erste Rotor (21) einen Hohlraum (9) mit einer inneren Nutung aufweist, in die eine von dem zweiten Rotor (22) ausgehende Zahnwelle (8) passt, zum zweiten Rotor (22) ein Mantel (11) befestigt ist, der Mantel (11) auf den Außenumfang des ersten Rotors (21) aufgeschoben ist, vorteilhaft der Mantel (11) an seinem Rand mit einer Dichtung gegen die Oberfläche des ersten Rotors (21) versehen ist.

5. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Schaufelsegmente (3) über eine Mitnehmerscheibe (12) mit dem ersten Rotor (21) oder dem zweiten Rotor (22) verbunden sind, wobei die Schaufelsegmente (3) mit der Stirnseite der Mitnehmerscheibe (12) derart verbunden sind, dass zwischen der Oberfläche des jeweiligen Rotors (2) und den Schaufelsegmenten (3) ein Spalt vorhanden ist.

6. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Hydraulikmotor (5) eine rotierende Lagerung der Schnecke (1) bildet, vorteilhaft ein Teil des Stators des Hydraulikmotors (5) im Inneren des zweiten Rotors (22) liegt und der nach außen weisende Flansch des Hydraulikmotors (5) mit der tragenden Konstruktion (4) verbunden ist.

7. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach dem Anspruch 6, dadurch gekennzeichnet, dass die Ausgangswelle des Hydraulikmotors (5) mit einer Welle (8) verbunden ist, die in die Stirnfläche (7) des zweiten Rotors (22) eingesetzt ist, wobei die Welle (8) auf der gegenüberliegenden Seite eine Nutung aufweist, die in die innere Nutung im Hohlraum (9) des ersten Rotors (21) passt, und eine Walze (10) am Außenumfang der Stirnfläche (7) befestigt ist, die einen Teil des Körpers des Hydraulikmotors (5) überlappt, wobei die Walze (10) entlang ihres Umfangs durch die Flügelsegmente (3) des zweiten Teils der Schnecke (1) an der Walze (10) befestigt ist, vorteilhaft der Rand der Walze (10) durch eine Drehdichtung gegen den Körper des Hydraulikmotors (5) abgedichtet ist und der Innenraum zwischen der Walze (10) und dem Körper des Hydraulikmotors (5) mit Flüssigkeit gefüllt ist.

8. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie ein Pflugschar (13) umfasst, das von der Seite der tragenden Konstruktion (4) anliegend zur Schnecke (1) angeordnet ist, wobei das Pflugschar (13) eine teleskopisch veränderbare Eingriffsbreite aufweist und das Pflugschar (13) mit einer Öffnung zum Absaugen von Schmutz und/oder Schlamm versehen ist.

9. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach dem Anspruch 8, dadurch gekennzeichnet, dass das Pflugschar (13) die Schnecke (1) an ihrem Umfang kreisförmig unter einem Winkel von mindestens 90° umgibt, der untere Teil von Pflugschar (13) durch die vertikale mittlere Längsebene der Schnecke (1) geht, der untere Teil von Pflugschar (13) ein Abstreifblatt für den angrenzenden Kontakt mit dem Untergrund aufweist, vorteilhaft das Abstreifblatt auswechselbar und aus antistatischem Kunststoff gefertigt ist.

10. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass sie zwei Hydraulikmotoren (5) hat und die Schnecke (1) eine symmetrische Anordnung mit zwei Paaren von ineinandergreifenden Rotoren (2) aufweist, die spiegelsymmetrisch zueinander gemäß der zentralen Querebene der Schnecke (1) sind, wobei der erste Hydraulikmotor (5) teilweise in den zweiten Rotor (22) auf einer Seite der Schnecke (1) eingesetzt ist, dieser zweite Rotor (22) eine Keilnutwelle (8) aufweist, die in dem genuteten Hohlraum (9) des ersten Rotors (21) gleitend gelagert ist, der in einer Einheit mit dem ersten Rotor (21) auf der anderen Seite der Schnecke (1) verbunden ist, und wobei die andere Seite der Schnecke (1) eine spiegelsymmetrische Anordnung mit dem ersten Rotor (21), mit der Welle (8), mit dem zweiten Rotor (22) und mit dem zweiten Hydraulikmotor (5) aufweist, vorteilhaft beide Hydraulikmotoren (5) an einen gemeinsamen Zweig der Hydraulikleitung angeschlossen sind.

11. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach dem Anspruch 10, dadurch gekennzeichnet, dass sie in der Mitte der Schnecke (1) eine Mitnehmerscheibe (12) aufweist und auf den beiden Seiten der Mitnehmerscheibe (12) die Schaufelsegmente (3) erscheinen.

12. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die tragende Konstruktion (4) einen Querträger (14) mit einem Befestigungselement zur Verbindung mit dem Wagen (6) umfasst, wobei der Querträger (14) an jedem seiner Enden schwenkbar gelagerte Arme (15) aufweist, wobei das gegenüberliegende Ende jedes Arms (15) mit einem Gelenk (16) versehen ist, zu dem die drehbare Auflagerung der Schnecke (1) angeschlossen ist, vorteilhaft der Hydraulikmotor (5) befestigt ist, und besonders vorteilhaft das gegenüberliegende Ende jedes Arms (15) mit zwei Gelenken (16) versehen ist.

13. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass sie einen Hydraulikzylinder umfasst, der quer in der tragenden Konstruktion (4) im Bereich zwischen dem Querträger (14) und der Schnecke (1) angebracht ist, vorteilhaft der Hydraulikzylinder an einen hydraulischen Antriebszweig des Hydraulikmotors (5) angeschlossen ist.

14. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 12 oder 13, dadurch gekennzeichnet, dass von den beiden Enden des Querträgers (14) in der Richtung der Schnecke (1) Bänder verlaufen, die mit Zapfen abgeschlossen sind, in denen die Hebel schwenkbar gelagert sind, und ein Hydraulikzylinder mit den Enden der Hebel verbunden ist, wobei jeder Hebel mit einer Kolbenstange verbunden ist, deren anderes Ende mit dem Arm (15) verbunden ist.

15. Vorrichtung zum Aufbrechen und/oder zum Entfernen von Verunreinigungen, insbesondere von Schlämmen in Tanks nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass die gegenseitig beweglichen Bauteilpaare mit einer Gleitführung auf Basis eines Werkstoffpaares Bronze/Edelstahl ausgestattet sind.

Revendications

1. Un dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs, comprenant une structure de support (4), un moteur hydraulique (5) à sortie rotative, une hélice (1), tandis que l'hélice (1) comporte des segments de palette (3) situés radialement autour de la circonférence d'un rotor (2), les segments de palettes (3) étant destinés pour capturer les impuretés, et la sortie d'un moteur hydraulique (5) est reliée à l'hélice (1) et le l'hélice (1) est placée de manière rotative aux deux extrémités dans la structure de support (4) essentiellement dans un plan horizontal, et le moteur hydraulique (5) est relié à la structure de support (4) dans l'axe de l'hélice (1), et la structure de support (4) est adaptée pour être fixée au chariot (6),
caractérisé en ce que

l'hélice (1) est constituée d'au moins deux parties reliées en rotation,

des rotors (21, 22) des première et deuxième partie de l'hélice (1) sont montés mobiles coulissants dans l'axe commun de l'hélice (1),

les deux parties de l'hélice (1) sont adaptées pour insérer partiellement le deuxième rotor (22) dans le premier rotor (21),

les segments de palette (3) de la première partie de l'hélice (1) et les segments de palette opposés (3) de la deuxième partie de l'hélice (1) sont séparés les uns des autres dans le plan axial longitudinal de l'hélice (1) par au moins la longueur de l'insertion du deuxième rotor (22) dans le premier rotor (21),

tandis que la structure de support (4) est adaptée à modifier la distance des extrémités dans lesquelles l'hélice (1) est placée de manière rotative.

2. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon la revendication 1 caractérisé en ce que sur de la circonférence du premier rotor (21) et/ou sur de la circonférence du deuxième rotor (22), au moins deux, de préférence au moins quatre segments de palette (3) sont placés à un espacement angulaire uniforme.

3. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon la revendication 1 ou 2 caractérisé en ce que les segments de palette (3) au premier rotor (21) et les segments de palette (3) sur le deuxième rotor (22) ont la même inclinaison depuis l'axe de l'hélice (1) dans le plan de contact de l'hélice (1).

4. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon quelconque des revendications 1 à 3 caractérisé en ce que le premier rotor (21) présente une cavité (9) avec rainure interne dans laquelle est incorporé l'arbre denté (8) sortant du deuxième rotor (22), le carter (11) est relié au deuxième rotor (22), le carter (11) est monté à la circonférence extérieure du premier rotor (21) de préférence la carter (11) est équipé d'un joint sur son bord contre la surface du premier rotor (21).

5. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon quelconque des revendications 1 à 4 caractérisé en ce que les segments de palettes (3) sont reliés au premier rotor (21) ou au deuxième rotor (22) par disque d'entraînement (12), tandis que les segments de palettes (3) sont reliés à la face du disque d'entraînement (12) de sorte qu'il y a un espace entre la surface du rotor respectif (2) et les segments de palettes (3).

6. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon quelconque des revendications 1 à 5 caractérisé en ce que le moteur hydraulique (5) forme un palier rotatif de l'hélice (1), de préférence une partie du stator du moteur hydraulique (5) est à l'intérieur du deuxième rotor (22) et la bride tournée vers l'extérieur du moteur hydraulique (5) est relié à la structure de support (4).

7. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon la revendication 6 caractérisé en ce que l'arbre de sortie du moteur hydraulique (5) est relié à l'arbre (8) qui est inséré dans une tête (7) du deuxième rotor (22), une arbre (8) présente sur le côté opposé une rainure qui s'insère dans la rainure intérieure dans la cavité (9) du premier rotor (21) et un cylindre (10) est fixé à la circonférence extérieure de la face (7) qui recouvre une partie du corps du moteur hydraulique (5), tandis que les segments de palettes (3) de la deuxième partie de l'hélice (1) sont fixés au cylindre (10) le long de sa circonférence, le bord du cylindre (10) est de préférence scellé contre le corps du moteur hydraulique (5) par un joint rotatif, et l'espace interne entre le cylindre (10) et le corps du moteur hydraulique (5) est rempli du liquide.

8. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon quelconque des revendications 1 à 7 caractérisé en ce qu'il comprend une lame (13), qui est située adjacente à l'hélice (1) du côté de la structure de support (4), tandis que la lame (13) a une largeur d'engagement télescopique variable et la lame (13) est dotée d'une ouverture pour aspirer des impuretés et/ou de la boue.

9. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon la revendication 8 caractérisé en ce que la pale (13) entoure l'hélice (1) le long de sa circonférence, soit en section circulaire avec un angle d'au moins 90°, la partie inférieure de la pale (13) passe par le plan longitudinal central vertical de l'hélice (1) et le la partie inférieure de la pale (13) comporte un balai pour un contact adjacent avec la base, le balai est de préférence échangeable et fabriqué en plastique antistatique.

10. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon quelconque des revendications 1 à 9 caractérisé en ce qu' il comporte deux moteurs hydrauliques (5) et l'hélice (1) présente une disposition symétrique avec deux paires de rotors (2) coulissant mutuellement, qui sont mutuellement symétriques en miroir selon le plan transversal central de l'hélice (1) où le premier moteur hydraulique le moteur (5) est partiellement inséré dans le deuxième rotor (22) d'un côté de l'hélice (1), le deuxième rotor (22) comporte un arbre cannelé (8) qui est monté coulissant dans la cavité cannelée (9) du premier rotor (21) qui est intégralement relié au premier rotor (21) de l'autre côté de l'hélice (1), et où l'autre côté de l'hélice (1) présente un agencement symétrique en miroir avec le premier rotor (21), avec l'arbre (8), avec le deuxième rotor (22) et avec le deuxième moteur hydraulique (5), de préférence les deux moteurs hydrauliques (5) sont reliés à une branche commune de la conduite hydraulique.

11. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon la revendication 10 caractérisé en ce qu' il comporte un disque d'entraînement (12) au milieu de l'hélice (1) et les segments de palette (3) sortent des deux côtés du disque d'entraînement (12).

12. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon quelconque des revendications 1 à 11 caractérisé en ce que la structure de support (4) comprend une poutre transversale (14) et un élément de liaison au chariot (6), sur la poutre transversale (14) se trouvent des bras (15) montés sur des axes aux deux extrémités, où l'extrémité opposée de chaque bras (15) est pourvu d'une articulation (16) à laquelle est relié le palier rotatif de l'hélice (1), de préférence le moteur hydraulique (5) est relié, et de préférence particulière, l'extrémité opposée de chaque bras (15) est muni de deux articulations (16).

13. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon quelconque des revendications 1 à 12 caractérisé en ce qu' il comprend un cylindre hydraulique placé transversalement dans la structure de support (4) dans l'espace entre la poutre transversale (14) et l'hélice (1), de préférence le cylindre hydraulique est relié à la branche hydraulique du moteur hydraulique d'entraînement (5).

14. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon la revendication 12 ou 13 caractérisé en ce que des deux extrémités de la poutre transversale (14) vers l'hélice (1), sont dirigées des courroies terminées par axes dans lesquelles les leviers sont montés pivotants, et un cylindre hydraulique est relié aux extrémités des leviers, tandis qu'une bielle est reliée à chaque levier dont l'autre extrémité est reliée au bras (15).

15. Le dispositif pour briser et/ou déplacer des impuretés, en particulier des boues dans les réservoirs selon quelconque des revendications 1 à 14 caractérisé en ce que les paires de pièces mutuellement mobiles sont équipées d'un guidage coulissant fondé sur la paire de matériaux bronze/acier inoxydable.

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