Multi-stage powder premixing components and continuous feeding device for self-leveling cement production

Abstract

This utility model relates to the field of self-leveling cement processing, and provides a multi-stage powder premixing component and continuous feeding device for self-leveling cement production, which solves the problems of incomplete powder agglomeration, uneven mixing, and uncontrolled feeding ratio. The premixing component includes a tank, a hopper, and a crushing mechanism: the hopper is equipped with double crushing rollers to crush agglomerates, and a stirring rod in the tank further mixes the powder; the continuous feeding device monitors the weight of the hopper in real time through a weighing device, controls the opening and closing of the solenoid valve according to the proportion, and the auger conveys the powder to the hopper. The crushing roller shaft is connected to a paddle to drive a striking block to vibrate the hopper, reducing powder adhesion to the walls; the first discharge pipe has an internal auger to achieve uniform discharge. This device improves the powder crushing rate and mixing uniformity, ensuring the fluidity of the self-leveling cement and the smoothness of the hardened layer.

Description

Technical Field

[0001] This utility model relates to the field of self-leveling cement processing technology, and in particular to a multi-stage powder premixing component and a continuous feeding device for self-leveling cement production. Background Technology

[0002] Self-leveling cement is a dry-mixed powder material made from cement as a base, mixed with special additives such as leveling agents, water-reducing agents, retarders, and fine aggregates such as quartz sand and heavy calcium carbonate powder. Its core characteristics are high fluidity and self-leveling ability—after being mixed with water on site, the slurry can automatically flow under gravity and fill in unevenness on the ground, ultimately forming a mirror-like smooth hardened layer.

[0003] In the existing technology, self-leveling cement requires pre-mixing of powder during processing. However, during processing, some powder clumps together, which are difficult to completely break up during mixing and the breaking effect is poor, affecting the mixing effect.

[0004] Therefore, we propose a multi-stage powder premixing component and a continuous feeding device for self-leveling cement production. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where some powder clumps during processing, making it difficult to completely break them up during mixing and resulting in poor crushing effect, which affects the mixing effect. The invention proposes a multi-stage powder premixing component and continuous feeding device for self-leveling cement production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Multi-stage powder premixed components for self-leveling cement production include: The tank body, wherein a first discharge pipe equipped with a solenoid valve is fixedly connected to the bottom of the tank body; A hopper is slidably fitted to the top of the tank body. Two second rotating shafts are rotatably connected inside the hopper, and crushing rollers are fixedly sleeved on the outer wall of the second rotating shafts. A stirring mechanism, located inside the tank, is used to mix and stir the powder. The drive mechanism, located on one side of the hopper, is used to drive the second rotating shaft to rotate; When the powder enters the hopper, the drive mechanism drives the crushing roller to rotate to break up the lumps in the powder. The crushed powder falls into the tank and is mixed by the stirring mechanism.

[0007] In one possible design, the stirring mechanism includes a second motor fixedly connected to the top of the tank and a first rotating shaft rotatably connected to the inner wall of the top of the tank. Multiple stirring rods are fixedly connected to the outer wall of the first rotating shaft, and the output shaft of the second motor is coaxially fixed with the first rotating shaft.

[0008] In one possible design, the drive mechanism includes a third motor fixedly connected to the outer wall of one side of the hopper, gears fixedly connected to the outer walls of two second rotating shafts, and a cover fixedly connected to the outer wall of the hopper. The output shaft of the third motor and one of the second rotating shafts are coaxially fixed, and both gears are located inside the cover and mesh with each other.

[0009] In one possible design, the first discharge pipe is inverted T-shaped, one end of the first discharge pipe is fixedly connected to a first motor, and an auger is rotatably connected inside the first discharge pipe. The output shaft of the first motor is fixed to the auger.

[0010] In one possible design, a fixed rod is fixedly connected between the inner walls of the two sides of the hopper, a fourth rotating shaft rotatably passes through the inner walls of the two sides of the hopper, a striking block is fixedly connected to the outer wall of the fourth rotating shaft, one end of the fourth rotating shaft passes through the hopper and is fixedly connected to a lever, a torsion spring is provided between the lever and the hopper, and one end of one of the second rotating shafts is fixedly connected to a lever block.

[0011] The continuous feeding device includes a multi-stage powder premixing component for self-leveling cement production, and a support set on one side of the tank. Multiple hoppers are slidably connected to the inner wall of the support. Multiple weighing devices are fixedly connected to the top of the support. Pressure plates are fixedly connected to the outer walls of both sides of the hoppers. The pressure plates are located on the surface of the weighing devices. A second discharge pipe equipped with a solenoid valve is fixedly connected to the bottom of the hopper. An inclined feeding pipe is fixedly connected inside the support. One end of the feeding pipe is connected to the hopper through a hose. A fourth motor is fixedly connected to the other end of the feeding pipe. An auger is rotatably connected inside the feeding pipe. The output shaft of the fourth motor is fixed to the auger. A controller is fixedly connected to one side of the support.

[0012] In this application, during use, the solenoid valve on the second discharge pipe is opened, allowing the powder to enter the feeding pipe through the second discharge pipe. The weighing device monitors the weight of the hopper in real time, thereby controlling the corresponding solenoid valve to close and precisely controlling the proportion of each powder. At the same time, the fourth motor is started to drive the auger to rotate, thereby conveying each powder into the hopper. Simultaneously, the third motor is started to drive the second rotating shaft crushing roller to rotate, breaking up any lumps in the powder. At the same time, the second rotating shaft drives the paddle to rotate, and the paddle drives the paddle rod to rotate. When the paddle disengages from the paddle rod, the torsion spring drives the fourth rotating shaft to reset, thereby driving the striking block to strike the fixed rod, thus vibrating the hopper and preventing the powder from adhering to the inner wall of the hopper. After the powder enters the tank, the second motor is started to drive the first rotating shaft and the stirring rod to rotate, thereby mixing and stirring the powder. After the mixing is completed, the solenoid valve on the first discharge pipe is opened, and the first motor is started to drive the auger to rotate, discharging the mixed powder.

[0013] Beneficial effects: In this utility model, the multi-stage powder premixing component and continuous feeding device for self-leveling cement production, through the setting of the second rotating shaft, crushing roller and third motor, can crush the powder before mixing, avoid the existence of lumps, and ensure the quality of powder mixing. In this utility model, the multi-stage powder premixing component and continuous feeding device for self-leveling cement production, through the setting of a weighing device, a fourth motor and an auger, can accurately control the proportion of each powder to be transported into the tank for mixing, thus ensuring the stability of the transport. In this invention, the multi-stage powder premixing component and continuous feeding device for self-leveling cement production, through the setting of structures such as striking blocks, torsion springs and prying blocks, can knock the fixed rod to make the powder fall, thus preventing the powder from adhering to the inner wall of the hopper. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of the tank for the multi-stage powder premixing component for self-leveling cement production proposed in this utility model. Figure 2 This is a schematic diagram of the internal structure of the hopper of the multi-stage powder premixing component for self-leveling cement production proposed in this utility model. Figure 3 This is a schematic diagram of the overall three-dimensional structure of the continuous feeding device proposed in this utility model.

[0015] In the diagram: 1. Tank; 2. First discharge pipe; 3. First motor; 4. First rotating shaft; 5. Stirring rod; 6. Second motor; 7. Hopper; 8. Second rotating shaft; 9. Gear; 10. Third motor; 11. Spring; 12. Pulley; 13. Fixing rod; 14. Fourth rotating shaft; 15. Striking block; 16. Torsion spring; 17. Pulley; 18. Cover; 19. Support; 20. Hopper; 21. Pressure plate; 22. Weighing device; 23. Feeding pipe; 24. Second discharge pipe; 25. Fourth motor; 26. Controller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In one embodiment: Refer to Figures 1-3The continuous feeding device includes a support frame 19 and a multi-stage powder premixing assembly installed on one side of the support frame. The main body of the premixing assembly is a cylindrical tank 1. An inverted T-shaped first discharge pipe 2 is welded to the bottom of the tank 1. A solenoid valve is installed on the vertical section of the first discharge pipe 2, and a first motor 3 is fixed to the end of the horizontal section. An auger is installed inside the first discharge pipe 2, and the auger shaft is rigidly connected to the output shaft of the first motor 3. An opening is made at the top of the tank 1, through which a hopper 7 slides through the top of the tank 1. A compression spring 11 is installed between the hopper 7 and the top plate of the tank 1 through a spring seat, so that the hopper 7 has vertical displacement space and provides cushioning for the vibration of the hopper 7.

[0018] The support frame 19 has three sets of guide rails inside, and the three hoppers 20 slide with the guide rails via side wall sliders. Each hopper 20 has a conical collecting hopper welded to its bottom, and the hopper outlet is connected to a second discharge pipe 24, which is equipped with an independent solenoid valve. Metal pressure plates 21 are horizontally welded to the outer walls of both sides of the hoppers 20. Weighing devices 22 are installed on the top of the support frame 19 corresponding to the positions of each pressure plate 21. The weighing devices 22 can be of the LR-RTN series or other suitable models, and the pressure plates 21 are completely fitted to the weighing platform of the weighing devices 22. A feeding pipe 23 is fixed at an angle in the middle of the support frame 19. The high end of the feeding pipe 23 is connected to the feed inlet of the hopper 7 via a flexible hose, and the low end is fixed to a fourth motor 25. The feeding pipe 23 has a built-in auger, and the auger shaft is directly connected to the output shaft of the fourth motor 25. A controller 26 is installed on the side wall of the support frame 19, and the controller 26 is connected to each weighing device 22, solenoid valve, and motor via cables.

[0019] Two second rotating shafts 8 are arranged in parallel inside the hopper 7, with both ends of the second rotating shafts 8 passing through the side wall of the hopper 7 via bearing seats. Crushing rollers are installed on the outer walls of the two rotating shafts with an interference fit, and the surface of the crushing rollers is provided with staggered crushing teeth. A third motor 10 is bolted to the outer wall of one side of the hopper 7, and the output shaft of the third motor 10 is connected to the end of one of the second rotating shafts 8 via a coupling. Gears 9 are installed on the shaft sections of the two second rotating shafts 8 located on the outside of the hopper 7. The gears 9 are covered by a metal cover 18 welded to the outer wall of the hopper 7, and the two gears 9 are kept in a meshed state within the cover 18.

[0020] A second motor 6 is fixed to the top of the tank 1 via a motor mount, and the output shaft of the second motor 6 is connected to the first rotating shaft 4 via a rigid coupling. The first rotating shaft 4 extends vertically into the interior of the tank 1, and multiple stirring rods 5 are welded circumferentially to its outer wall.

[0021] This application can be used in the field of self-leveling cement processing, as well as in other fields applicable to this application.

[0022] In another embodiment: a multi-stage powder premixing component for self-leveling cement production, which is applied to the field of self-leveling cement processing; In another aspect of this embodiment, a fixing rod 13 is horizontally welded to the inner wall of the hopper 7. A fourth rotating shaft 14 passes through the side wall of the hopper 7 via a bearing, and a striking block 15 is welded to the shaft section located inside the hopper 7. The movement trajectory of the striking block 15 overlaps with that of the fixing rod 13. A lever 17 is welded to the outer end of the fourth rotating shaft 14, and a torsion spring 16 is fitted between the lever 17 and the outer wall of the hopper 7. A lever 12 is welded to the adjacent end of the second rotating shaft 8, and the rotation path of the lever 12 intersects with the free end of the lever 17.

[0023] As is known to those skilled in the art, the working principles and wiring methods of the first motor 3, the second motor 6, the third motor 10, and the fourth motor 25 are all conventional technical methods. Given that these technical features are already conventional technical solutions in this field, this specification will not repeat their specific implementation details. Those skilled in the art can make reasonable configurations and selections based on the technical requirements of specific application scenarios and in conjunction with existing known technologies.

[0024] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-stage powder premixing component for self-leveling cement production, characterized in that, include: Tank (1), the bottom of which is fixedly connected to a first discharge pipe (2) equipped with a solenoid valve; The hopper (7) is slidably fitted to the top of the tank (1), and two second rotating shafts (8) are rotatably connected inside the hopper (7). The outer wall of the second rotating shaft (8) is fixedly fitted with a crushing roller. A stirring mechanism is installed inside the tank (1) for mixing and stirring the powder. A drive mechanism is located on one side of the hopper (7) and is used to drive the second rotating shaft (8) to rotate; When the powder enters the hopper (7), the driving mechanism drives the crushing roller to rotate to break up the lumps in the powder. The crushed powder falls into the tank (1) and is mixed by the stirring mechanism.

2. The multi-stage powder premixing component for self-leveling cement production according to claim 1, characterized in that, The stirring mechanism includes a second motor (6) fixedly connected to the top of the tank (1) and a first rotating shaft (4) rotatably connected to the inner wall of the top of the tank (1). Multiple stirring rods (5) are fixedly connected to the outer wall of the first rotating shaft (4). The output shaft of the second motor (6) and the first rotating shaft (4) are coaxially fixed.

3. The multi-stage powder premixing component for self-leveling cement production according to claim 2, characterized in that, The drive mechanism includes a third motor (10) fixedly connected to the outer wall of one side of the hopper (7), gears (9) fixedly connected to the outer walls of two second rotating shafts (8), and a cover (18) fixedly connected to the outer wall of the hopper (7). The output shaft of the third motor (10) and one of the second rotating shafts (8) are coaxially fixed, and the two gears (9) are both located inside the cover (18) and mesh with each other.

4. The multi-stage powder premixing component for self-leveling cement production according to claim 3, characterized in that, The first discharge pipe (2) is inverted T-shaped. One end of the first discharge pipe (2) is fixedly connected to the first motor (3). An auger is rotatably connected inside the first discharge pipe (2). The output shaft of the first motor (3) is fixed to the auger.

5. The multi-stage powder premixing component for self-leveling cement production according to claim 4, characterized in that, A fixed rod (13) is fixedly connected between the inner walls of the two sides of the hopper (7). A fourth rotating shaft (14) is rotatably connected between the inner walls of the two sides of the hopper (7). A striking block (15) is fixedly connected to the outer wall of the fourth rotating shaft (14). One end of the fourth rotating shaft (14) passes through the hopper (7) and is fixedly connected to a lever (17). A torsion spring (16) is provided between the lever (17) and the hopper (7). One end of one of the second rotating shafts (8) is fixedly connected to a lever (12).

6. A continuous feeding device, characterized in that, The self-leveling cement production multi-stage powder premixing component as described in any one of claims 1-5 also includes a bracket (19) set on one side of the tank (1). Multiple silos (20) are slidably connected to the inner wall of the bracket (19). Multiple weighing devices (22) are fixedly connected to the top of the bracket (19). Pressure plates (21) are fixedly connected to the outer walls on both sides of the silos (20). The pressure plates (21) are located on the surface of the weighing devices (22). A second discharge pipe (24) equipped with a solenoid valve is fixedly connected to the bottom of the silos (20). An inclined feeding pipe (23) is fixedly connected inside the bracket (19). One end of the feeding pipe (23) is connected to the hopper (7) through a hose. A fourth motor (25) is fixedly connected to the other end of the feeding pipe (23). An auger is rotatably connected inside the feeding pipe (23). The output shaft of the fourth motor (25) is fixed to the auger. A controller (26) is fixedly connected to one side of the bracket (19).

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