AN AUTOMATED MIXING APPARATUS FOR THE PRODUCTION OF CEMENT MORTARS AND FOAM CONCRETE

Abstract

 The present invention relates to fully automated mixing apparatus with continuous action for Portland cement mortars and foam concretes with different qualities and volumetric weights. The hull at the mixer has at least two hoppers (1,2) for dry materials, which can be portland cement, gypsum, lime, dry mixtures, dry sand. In each hopper (1,2) there is an auger dispenser (5,7) driven by a stepper motor (8), which feeds the set amount of dry material into a dry mixer (9) in which the augers (5,7) are next to each other, the construction of the mixer is open only from below and the nozzles injects the necessary water with chemical additives. A foam generator (18) feeds foam for the production of foam concrete. Stepper motors (8) precisely change augers and peristaltic hose pumps (17) revolutions to change the processes for continuous production of portland cement mortars and foam concrete with different qualities and volumetric weights and automatic change of recipes.

Description

FIELD OF THE INVENTION

[0001] The present invention relates to certain new and useful improvements in mixing machines and more particularly refers to fully automated mixing apparatus with continuous action for the production of portland cement mortars and foam concretes with different qualities and volumetric weights.

DESCRIPTION OF PRIOR ART

[0002] The use of portland cement mortars mixers is known in the prior art. Initially they were manually operated, and later with motor drive. Currently, there are many varieties of mortar mixers with intermittent /USD534551S1/ and with continuous action /US2756975A/. The production of foam concrete is carried out by mixing in various machines of pre-prepared mortars and foam. Mortar mixers are used to prepare special portland cement mixtures for 3D printing of buildings. Currently available mixers with continuous action of mortars have disadvantages, such as manual adjustment of raw material parameters, difficult and slow or impossible change of the recipe and a high probability of human error.

[0003] The first object of the present invention is to provide a fully automated continuous mixer of portland cement mortars with different qualities and volumetric weights. It uses several types of dry materials and several types of liquid chemicals. In its hull, there is a foam generator to add foam to the mortars for the production of foam concrete.

[0004] Another object of the present invention is for the mixer to continuously change the production of various recipes of mortars and foams, as well as automatically switching from portland cement mortar production to foam concrete production and back to portland cement mortars.

SUMMARY OF INVENTION

[0005] The present invention aims at eliminating the aforementioned disadvantages in the prior art and its main object is to provide a fully automated mixer, characterized by a new mixer for portland cement mortars and foam concrete having at least two hoppers for bulk dry materials, for example Portland cement, gypsum, lime, ready-made dry mixes and dry sand. In each hopper there is a dispensing auger driven by a stepper motor, which feeds a set amount of dry materials from the hoppers into a new dry mixer with wetting injection nozzles located around it. The wetted mixture is stirred in a new mixer and enters a mixer of the construction mixture and a mixer with foam concrete. Peristaltic hose pumps, driven by stepper motors, precisely supply water needed for portland cement mortars and foam.

[0006] The object of the invention is the uninterrupted production of various recipes of mortars and foam concrete and is solved by changing the revolutions of stepper motors driving the augers and peristaltic hose pumps.

[0007] The object of the invention is achieved according to claims 1, 2, 3, 4, 5 and 6.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings wherein:

FIG. 1 is axonometric view of the preferred design of the mixer.

Position (1) First bunker

Position (2) Second bunker

Position (3) Control unit

Position (4) Sector-cut support pipes

Position (5) Auger to the first hopper

Position (6) Dry mixer

Position (7) Auger to the second hopper

Position (8) Stepper motor

Position (9) Mixer for dry mixture with water

Position (10) Mortar mixer

Position (11) Foam injector

Position (12) Pouring pipe

FIG. 2 is vertical section of the new dry mixer and the mortar mixer.

Position (13) Cantilever construction

FIG. 3 is vertical section of the new drawer-type cantilever structure that holds the mortar mixer.

Position (I) Working position of the mortar mixer.

Position (II) Sideways exported position of the mortar mixer.

FIG. 4 is vertical section of axonometric view of the mixer with prominent computer unit cooler and peristaltic hose pumps.

Position (14) Cooler

Position (15) Ribbed aluminum plate with attached serpentines

Position (16) Cooling radiator

Position (17) Peristaltic hose pump

Position (18) Foam generator

DESCRIPTION OF THE PREFERRED EMBODIMENT

[0009] Referring to the drawings, and particularly to FIGS. 1-4, a preferred embodiment of the automated mixing apparatus for the production of portland cement mortars and foam concrete, which the present invention is shown.

[0010] In FIG. 1 shows the new apparatus. It has a self-supporting structure of three parallel vertical sheet metal planes, which are reinforced from above by three frames to form a first hopper (1) and a second hopper (2), which is smaller and has space for a control unit box (3). At the lower end, the structure is reinforced by two sector-cut support pipes (4), which are auger beds. There is an auger (5) in a hopper (1), which adds the dry material in a dry mixer (6). After the auger (5) is passes through the dry mixer (6), it is mounted to a stepper motor (8) which is attached to the housing under the hopper (2). There is an auger (7) in a hopper (2), which adds the dry material in a dry mixer (6). After the auger (7) is passes through the dry mixer (6), it is mounted to a stepper motor (8) which is attached to the housing under the hopper (1).

[0011] In FIG. 2 shows the new dry mixer (6) and a mixer for dry mixture with water (9). The two augers (5) and (7) mix the dry materials from the hoppers (1) and (2) in the common body of the dry mixer (6), dropping down the dry mixture is wetted by circumferentially located nozzles. The closest known patent for such wetting is WO2018112561. A stirrer mixes wet material in the mixer for dry mixture with water (9), and in a mortar mixer (10) and foam from a foam injector (11). The mortar mixer (10) is disassembled from the mixer for dry mixture with water (9), leaving the stirrer in place to be easily cleaned.

[0012] In FIG. 3 shows a new drawer-type cantilever structure (13). The mixer for dry mixture with water (9) and the mortar mixer (10) is attached to the cantilever structure (13). Through pairs of wheels, the new cantilever structure (13) moves along the lower edge of the self-supporting structure of the mixer for Portland cement mortars and foam concrete (10). This allows the mixer for dry mixture with water (9) and the mortar mixer (10) to be removed from the housing to be cleaned, as well as to remove remaining dry material from the hopper (1) only by starting the auger (5) as well as from the hopper (2) by starting the auger (7).

[0013] In FIG. 4 shows a cooler (14) of the control unit (3), which is made of a ribbed aluminum plate (15) with attached serpentines and on which computer processors and a cooling radiator (16) are mounted directly. The cooler is mounted on the rear wall of the control unit box (3). A peristaltic hose pump (17) introduces the water for the production of solutions through the cooler (14), and part of the water passes through a pump into the cooling radiator (16) and returns back to the cooler (14). A system of peristaltic hose pumps (17) are installed in the space next to the sloping side wall of the hoppers. The main pump supplies water to wetting injection nozzles, separate peristaltic hose pumps (17), pour chemicals into the water through a soothing vessel of the main pump and to a foam generator (18). All chemical additives are in separate containers mounted on the housing.

LITERATURE

[0014] 

1. USD534551S1 The ornamental design for a mortar mixer, as shown and described.

2. US2756975A Mixers, particularly mortar mixer.

3. WO2018112561 METHOD AND DEVICE FOR PRODUCING HYDRAULICALLY BOUND BUILDING

Claims

1. An automated mixing apparatus with continuous action for the production of cement mortars and foam concrete with different qualities and volumetric weights comprising: A hull at the mixer with two or more hoppers (1, 2) for bulk dry materials; dispensing auger (5, 7); a dry mixer (9); injection nozzles for water with chemical additives; a mixer for the production of cement mortars(10); a mixer for mixing cement mortars with foam(12); peristaltic hose pumps(17); a foam generator (18); coolers (14); a process control computer system.

2. In the hull as claimed in Claim 1, whereby it has at least two hoppers (1, 2) for bulk dry materials, which may be portland cement, gypsum, lime, ready-made dry mixes and dry sand.

3. In each hopper (1, 2) there is an auger dispenser (5, 7) driven by a stepper motor (8), which feeds a set amount of dry material into the dry mixer (9) as claimed in Claim 1, whereby every two augers (5, 7) move against each other, the mixer structure is open only from below and the dry material is wetted with a set amount of water from nozzles located around the dispenser.

4. The mixers (9) for mixing the dry mix with water and the addition of foam (11) are hung under the dry mixer as claimed in Claim 1, whereby they are in a common hull, which is movable to the side of the mixer body by cantilever construction (13).

5. The process control computer system is cooled by a radiator (14) as claimed in Claim 1, whereby it is cooled by water used for the production of solutions which passes through it.

6. The processes for continuous production are controlled by the computer system by changing the speed of the stepper motors (8) of the augers (5, 7) and peristaltic hose pumps (17) as claimed in Claim 1, whereby the transition from one recipe to another is in accordance with the consistency of the solution, and in a recipe with a thinner consistency the change takes longer.

Drawing