Screen plate cleaning device for coal vibrating screen

Abstract

The invention relates to the technical field of mining equipment maintenance, and discloses a coal vibrating screen plate cleaning device which comprises a cleaning box and a screen plate body, a supporting table used for supporting the screen plate body is arranged in the cleaning box, a moving plate slides in the cleaning box, and plugging pieces used for plugging the bottoms of screen holes of the screen plate body are arranged on the surface of the moving plate. The blocking piece comprises a baffle arranged at the top of the moving plate, the baffle is connected with the moving plate through a plurality of electric push rods, the cleaning assembly is used for washing the sieve plate body, and the cleaning assembly and the blocking piece are arranged above and below the sieve plate body respectively. Water flow, used for flushing the sieve plate body, of the cleaning assembly can prolong the time of staying in the sieve holes. The cleaning device further comprises a driving assembly used for driving the moving plate to reciprocate in the cleaning box. The cleaning efficiency of the vibrating screen plate can be improved.

Description

Technical Field

[0001] This invention relates to the field of mining equipment maintenance technology, specifically to a coal vibrating screen cleaning device. Background Technology

[0002] Vibrating screens for coal mines are core equipment in the coal washing and processing process, undertaking key technological tasks such as grading, dewatering, desliming, and demediuming. As the working surface that directly contacts the material, the screen plate will inevitably accumulate a complex mixture of dirt, consisting of fine coal powder, sticky mud, mineral salts, and media, during operation. Regular and effective cleaning of the screen plate is a necessary step to ensure the continuous and stable operation of the vibrating screen and maintain the efficiency of the entire coal washing and processing production line.

[0003] Currently, the most common solution used in the industry to address the problem of screen plate clogging in vibrating screens is high-pressure water jet flushing. However, due to the sticky and strong adhesion of the coal grime remaining in the screen holes, when using water jet flushing, the water flow is too fast because the screen holes are an open structure that runs vertically through the screen. It is difficult to form effective retention and pressure accumulation during the flow, resulting in a very short water retention time in the screen holes. Although the flow rate is high, the static pressure acting on the grime is low, making it difficult for the water to fully wet, penetrate, and tear the sludge adhering to the inner wall of the screen holes, which is not conducive to improving the screen plate cleaning efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a coal vibrating screen plate cleaning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coal vibrating screen plate cleaning device, comprising a cleaning box and a screen plate body, wherein a support platform for supporting the screen plate body is provided inside the cleaning box, a movable plate is slidably disposed inside the cleaning box, and a sealing component for sealing the bottom of the screen holes of the screen plate body is provided on the surface of the movable plate, the sealing component including a baffle disposed on the top of the movable plate, the baffle being connected to the movable plate through several electric push rods, and further comprising a cleaning assembly for rinsing the screen plate body, wherein the cleaning assembly and the sealing component are respectively disposed above and below the screen plate body;

[0006] When the baffle is close to or close to the bottom of the screen plate body, the water flow from the cleaning component that washes the screen plate body will stay in the screen holes for a longer period of time.

[0007] It also includes a drive assembly for moving the movable plate back and forth within the cleaning tank.

[0008] Preferably, the sealing component includes a baffle plate disposed on the top of the movable plate, the baffle plate being connected to the movable plate via several electric push rods, the bottom of the baffle plate being provided with several conical blocks adapted to the sieve holes of the sieve plate body, and the surface of the baffle plate being provided with conical grooves adapted to the conical blocks.

[0009] Preferably, the conical groove has a spiral groove inside.

[0010] Preferably, the cleaning assembly includes a fixed plate fixedly connected to one side of the baffle, a support plate is provided on the surface of the fixed plate, and a plurality of spray pipes are provided on the surface of the support plate. The spray nozzles of the spray pipes face the screen plate body, and the plurality of spray pipes are connected to an external water pumping device through water supply pipes.

[0011] Preferably, the nozzle is hinged to the surface of the support plate, and a synchronization plate is slidably connected to the surface of the support plate. The surface of the synchronization plate has a number of movable grooves adapted to the nozzle. The surface of the nozzle is fixedly connected to a slider adapted to the movable groove. One end of the synchronization plate is rotatably connected to an adjusting bolt, and the adjusting bolt is threadedly connected to the support plate.

[0012] Preferably, the support plate is rotatably connected to the surface of the fixed plate, and the hinge between the support plate and the fixed plate is a damped rotatable connection.

[0013] Preferably, the drive assembly includes a drive motor fixedly connected to one side of the cleaning tank, and rollers are provided at the output end of the drive motor and the inner wall of the cleaning tank. A belt is drivenly connected to the surfaces of the two rollers, and a connecting plate connected to the belt is fixedly connected to the surface of the moving plate.

[0014] Preferably, a drain outlet communicating with the interior of the cleaning tank is provided on one side.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention incorporates a baffle. When the baffle is close to or pressed against the bottom of the screen plate body, the water flow sprayed from the nozzle above to rinse the screen plate is blocked by the baffle as it flows through the screen holes on the surface of the screen plate body, thus prolonging the time the water remains in the screen holes. This increases the contact time for removing sludge from the screen holes. Furthermore, after the water flow enters the screen holes, the baffle forms a narrower channel at its outlet or directly blocks the water flow, creating a bottleneck. This reduces the water flow velocity at this point and effectively increases the water pressure, facilitating the thorough wetting and removal of sludge adhering to the screen holes, thereby improving cleaning efficiency.

[0017] This invention, by setting a conical block inside the baffle and its internal conical groove, gradually reduces the space through which the water flows, thereby reducing the water flow time. At the same time, the spiral groove inside the conical groove facilitates the formation of a swirling flow of water at this point, improving the carrying capacity and sludge removal capacity generated by the water flow at this point, effectively improving the decontamination and cleaning effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a cross-sectional view used by the present invention to illustrate the internal structure of the cleaning tank;

[0020] Figure 3 For the present invention Figure 2 Enlarged view of point A in the image;

[0021] Figure 4 This is a cross-sectional schematic diagram illustrating the tilted state of the support plate and nozzle according to the present invention;

[0022] Figure 5 This is a schematic diagram illustrating a first embodiment of the sealing component of the present invention;

[0023] Figure 6 This is a schematic diagram illustrating a second embodiment of the sealing component of the present invention.

[0024] In the diagram: 1. Cleaning tank; 11. Support platform; 12. Screen plate body; 13. Drain outlet; 2. Moving plate; 21. Baffle; 211. Electric actuator; 212. Conical block; 213. Spiral groove; 22. Fixed plate; 221. Support plate; 222. Spray pipe; 223. Water supply pipe; 23. Synchronizing plate; 231. Movable groove; 232. Slider; 233. Adjusting bolt; 3. Connecting plate; 31. Belt; 311. Roller; 312. Drive motor. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] This invention discloses a coal vibrating screen plate cleaning device, such as... Figure 1-6As shown, the system includes a cleaning tank 1 and a screen plate body 12. The size of the cleaning tank 1 is determined according to the size of the screen plate body 12. The screen plate body 12 is a screen plate that needs to be cleaned and removed from a coal vibrating screen. A support platform 11 for supporting the screen plate body 12 is provided inside the cleaning tank 1. The support platform 11 is located on the inner wall of the cleaning tank 1, and the screen plate body 12 can be placed on the support platform 11, thus suspending itself inside the cleaning tank 1. The area below the screen plate body 12 inside the cleaning tank 1 can serve as a water tank to collect water for cleaning the screen plate body 12. A movable plate 2 slides inside the cleaning tank 1. Rollers 311 can be provided at the connection between the movable plate 2 and the cleaning tank 1 to reduce friction. The movable plate 2 is located below the screen plate body 12, and the surface of the movable plate 2 is provided with a sealant for blocking the screen plate body 12. The sealing component at the bottom of the hole includes a baffle 21 disposed on the top of the movable plate 2. The baffle 21 is connected to the movable plate 2 via several electric push rods 211. The fixed end of the electric push rod 211 is fixedly connected to the movable plate 2, and its output end is fixedly connected to the baffle 21. It also includes a cleaning assembly for rinsing the screen plate body 12. The cleaning assembly and the sealing component are disposed above and below the screen plate body 12, so the screen plate body 12 can be inserted into the cleaning tank 1 between the cleaning assembly and the sealing component and placed on the surface of the support platform 11. When the baffle 21 is close to or close to the bottom of the screen plate body 12, the water flow of the cleaning assembly rinsing the screen plate body 12 will stay in the screen hole for a longer period of time. It also includes a drive assembly for driving the movable plate 2 to move back and forth in the cleaning tank 1.

[0027] Specifically, the cleaning assembly can rinse the screen plate body 12 below it. Furthermore, due to the baffle 21, when the electric actuator 211 outputs and pushes the baffle 21 up to near or against the bottom of the screen plate body 12, the water sprayed by the cleaning assembly enters the screen holes on the surface of the screen plate body 12. Because the bottom opening of the screen hole is blocked by the baffle 21, the water can remain in the screen hole for a longer time. Moreover, after the rebound of the baffle 21, the water can further bounce back and clean the sludge on the inner wall of the screen hole. The rinsing continues, increasing the contact time for removing sludge from the screen holes. After the water enters the screen holes, the baffle 21 forms a narrower channel at its outlet, or directly blocks the water flow to form a bottleneck, reducing the water flow velocity and effectively increasing the water pressure. This facilitates thorough wetting and tearing off the sludge adhering to the screen holes, improving cleaning efficiency. At the same time, driven by the drive component, the cleaning component and the sealing component can move back and forth on the surface of the screen plate body 12, facilitating a more comprehensive cleaning of the screen plate body 12.

[0028] In one parallel embodiment, such as Figure 6As shown, the sealing component includes a baffle 21 disposed on the top of the movable plate 2. The baffle 21 is connected to the movable plate 2 via several electric push rods 211. The fixed end of the electric push rod 211 is fixedly connected to the movable plate 2, and its output end is fixedly connected to the baffle 21. The bottom of the baffle 21 is provided with several conical blocks 212 that are adapted to the sieve holes of the sieve plate body 12. The surface of the baffle 21 is provided with conical grooves that are adapted to the conical blocks 212. The conical grooves are adapted to the sieve holes on the surface of each sieve plate body 12. The conical grooves are provided with spiral grooves 213.

[0029] Specifically, in this embodiment, when the water jet sprayed by the cleaning component enters the screen hole, its residence time is prolonged due to the gradually narrowing inner diameter of the conical groove. Furthermore, by setting the spiral groove 213, the incoming water jet is guided to rotate, forming a vortex in the conical groove. The rotating water jet continuously washes the inner wall of the screen hole, generating a large suction and tearing force on the sludge with strong adhesion, thereby further improving the cleaning ability of the screen hole and improving the cleaning efficiency.

[0030] like Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the cleaning assembly includes a fixed plate 22 fixedly connected to one side of the baffle 21. A support plate 221 is provided on the surface of the fixed plate 22, and a plurality of spray pipes 222 are provided on the surface of the support plate 221. The nozzles of the spray pipes 222 face the screen plate body 12. The plurality of spray pipes 222 are connected to an external water pumping device through a water supply pipe 223. The external water pumping device pumps clean water into the water supply pipe 223 and sprays it out through the plurality of spray pipes 222. It is worth noting that the spray pipes 222 are high-pressure nozzles, and the external water pumping device is a pressurized water pumping device. The pressurized water is sprayed out through the spray pipes 222, which facilitates a powerful rinsing of the surface of the screen plate body 12 and the inner wall of the screen holes.

[0031] Furthermore, the nozzle 222 is hinged to the surface of the support plate 221, and a synchronization plate 23 is slidably connected to the surface of the support plate 221. The surface of the synchronization plate 23 is provided with a plurality of movable grooves 231 that are adapted to the nozzle 222. A slider 232 adapted to the movable groove 231 is fixedly connected to the surface of the nozzle 222. An adjusting bolt 233 is rotatably connected to one end of the synchronization plate 23, and the adjusting bolt 233 is threadedly connected to the support plate 221.

[0032] Specifically, by rotating the adjusting bolt 233, its thread rotates on one side of the support plate 221 and moves laterally accordingly, driving the synchronous plate 23 to move laterally. Then, through the movable groove 231 on the surface of the synchronous plate 23, the slider 232 on the surface of the nozzle 222 moves laterally synchronously. Since the nozzle 222 is hinged to the surface of the support plate 221, the nozzle 222 will rotate laterally to adjust its spray angle. By adjusting its spray angle, it is easier to spray water obliquely into the screen holes on the surface of the screen plate body 12, making the generation of vortex in the screen holes more convenient and effective.

[0033] The support plate 221 is rotatably connected to the surface of the fixed plate 22, and the hinge between the support plate 221 and the fixed plate 22 is a damped rotational connection. By rotating the support plate 221, since it is a damped rotation, after applying a certain force to make it rotate, it can be fixed at the corresponding angle through damping. This facilitates the longitudinal angle adjustment of the entire row of spray pipes 222, thereby adjusting the angle according to the different screen hole shapes and sizes on the surface of the screen plate body 12. With the adjustment of the aforementioned adjusting bolts 233, the spray angle of the spray pipes 222 can be adjusted in multiple dimensions, further improving the incident direction of the water flow in the screen holes and the convenience of generating vortex.

[0034] The drive assembly includes a drive motor 312 fixedly connected to one side of the cleaning tank 1. The drive motor 312 is a servo motor. Rollers 311 are provided at both the output end of the drive motor 312 and the inner wall of the cleaning tank 1. The roller 311 located on the inner wall of the cleaning tank 1 is rotatably connected to the cleaning tank 1, while the roller 311 located at the output end of the drive motor 312 is fixedly connected to it. A belt 31 is driven to the surfaces of the two rollers 311. A connecting plate 3 connected to the belt 31 is fixedly connected to the surface of the moving plate 2. The connecting plate 3 is fixedly connected to the belt 31. Through the output of the drive motor 312, the roller 311 at its output end is driven to rotate, which in turn cooperates with the transmission belt 31 to make the belt 31 synchronously drive the roller 311 on the inner wall of the cleaning tank 1. This causes the connecting plate 3 on the belt 31 to drive the moving plate 2 to move, so that it can move back and forth in the cleaning tank 1, which facilitates a more comprehensive rinsing of the screen plate body 12.

[0035] The cleaning tank 1 is provided with a drain outlet 13 on one side, which communicates with its interior. The drain outlet 13 can be used to drain the sludge water generated during the rinsing process inside the cleaning tank 1.

[0036] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal vibrating screen cleaning device, comprising a cleaning box (1) and a screen body (12), wherein the cleaning box (1) is provided with a support platform (11) for supporting the screen body (12), characterized in that, A movable plate (2) slides inside the cleaning tank (1). The surface of the movable plate (2) is provided with a sealing component for sealing the bottom of the screen hole of the screen plate body (12). The sealing component includes a baffle (21) set on the top of the movable plate (2). The baffle (21) is connected to the movable plate (2) through several electric push rods (211). It also includes a cleaning assembly for rinsing the screen plate body (12). The cleaning assembly and the sealing component are respectively set on the upper and lower parts of the screen plate body (12). When the baffle (21) is close to or close to the bottom of the screen plate body (12), the water flow from the cleaning assembly rinsing the screen plate body (12) will stay in the screen holes for a longer period of time. It also includes a drive assembly for moving the movable plate (2) back and forth within the cleaning tank (1).

2. The coal vibrating screen cleaning device according to claim 1, characterized in that: The sealing component includes a baffle (21) disposed on the top of the movable plate (2). The baffle (21) is connected to the movable plate (2) by a number of electric push rods (211). The bottom of the baffle (21) is provided with a number of conical blocks (212) adapted to the sieve holes of the sieve plate body (12). The surface of the baffle (21) is provided with conical grooves adapted to the conical blocks (212).

3. The coal vibrating screen plate cleaning device according to claim 2, characterized in that: The conical groove is provided with a spiral groove (213).

4. The coal vibrating screen plate cleaning device according to claim 1, characterized in that: The cleaning assembly includes a fixed plate (22) fixedly connected to one side of the baffle (21). A support plate (221) is provided on the surface of the fixed plate (22). A plurality of spray pipes (222) are provided on the surface of the support plate (221). The nozzles of the spray pipes (222) are directed toward the screen plate body (12). The plurality of spray pipes (222) are connected to an external water pumping device through a water supply pipe (223).

5. A coal vibrating screen cleaning device according to claim 4, characterized in that: The nozzle (222) is hinged to the surface of the support plate (221), and a synchronization plate (23) is slidably connected to the surface of the support plate (221). The surface of the synchronization plate (23) is provided with a number of movable slots (231) that are adapted to the nozzle (222). The surface of the nozzle (222) is fixedly connected with sliders (232) that are adapted to the movable slots (231). One end of the synchronization plate (23) is rotatably connected with an adjusting bolt (233), and the adjusting bolt (233) is threadedly connected to the support plate (221).

6. A coal vibrating screen cleaning device according to claim 4, characterized in that: The support plate (221) is rotatably connected to the surface of the fixed plate (22), and the hinge between the support plate (221) and the fixed plate (22) is a damped rotatable connection.

7. A coal vibrating screen cleaning device according to claim 1, characterized in that: The drive assembly includes a drive motor (312) fixedly connected to one side of the cleaning tank (1). Rollers (311) are provided at the output end of the drive motor (312) and the inner wall of the cleaning tank (1). A belt (31) is connected to the surface of the two rollers (311). A connecting plate (3) connected to the belt (31) is fixedly connected to the surface of the moving plate (2).

8. A coal vibrating screen cleaning device according to claim 1, characterized in that: The cleaning tank (1) has a drain outlet (13) on one side that communicates with its interior.

Images