A filter press device for liquid materials

Abstract

This invention relates to the technical field of industrial sludge treatment, specifically to a liquid-containing material filter press device. A conveying unit transports filter cloth and liquid material between the filter cloths to a filter press. A feeding unit, cooperating with the conveying unit, transports the liquid material between an upper filter cloth and a lower filter cloth. A stacking unit includes an upper cloth assembly and a lower cloth assembly, which respectively supply and transport the upper and lower filter cloths. The filter press is located at the end of the conveying unit and applies pressure to the liquid material between the upper and lower filter cloths for solid-liquid separation. A filter cloth cleaning unit cleans the recovered upper and lower filter cloths. A control unit is electrically connected to each of the above units and controls the operating status and parameters of the equipment. This invention optimizes the conveying and stacking mechanism of the filter cloth, ensuring that the filter cloths are not easily misaligned during stacking, thus making the solid-liquid separation process more thorough.

Description

Technical Field

[0001] This invention relates to the technical field of industrial sludge treatment, and more specifically, to a pressure filter device for liquid materials. Background Technology

[0002] Sludge treatment and disposal is an indispensable part of wastewater treatment. With the acceleration of industrialization and urbanization, the volume of wastewater treated has increased, and sludge production has also shown a year-on-year growth trend. How to efficiently and economically treat sludge, especially in urban wastewater treatment plants and industrial wastewater treatment, has become a pressing technical problem to be solved in the field of environmental protection.

[0003] Traditional sludge treatment methods include anaerobic digestion, drying, incineration, landfill, and filtration. Among these, filtration technology, as a mature sludge dewatering method, has been widely used in various wastewater treatment facilities. A filter press applies pressure to the sludge between filter cloths, squeezing out the water to obtain a dewatered sludge cake. Compared to other sludge treatment technologies, filter presses have advantages such as ease of operation, lower equipment costs, and significant treatment effects, and are particularly widely used in large-scale wastewater treatment and sludge thickening.

[0004] For example, CN110922018A discloses a stacked filter press device. The stacked filter press device includes three main structural modules: a stacked cloth assembly, a sludge cloth device, and a pressing device. The first telescopic drive device can drive the stacked cloth device to move toward the pressing device, so that the upper and lower filter cloths, which move toward the pressing device and hold the material, can be repeatedly stacked on the liftable tray below the press head. Therefore, the sludge to be dewatered can be transported to the stacked cloth assembly through the sludge cloth device, and then the upper and lower filter cloths containing the sludge are stacked layer by layer on the liftable tray below the press head through the stacked cloth device. Finally, the sludge is pressed and filtered by the press head. The moisture content of different types of sludge can be directly dewatered from about 80% to below 50%.

[0005] For example, the intelligent sludge treatment solid-liquid separation system disclosed in announcement number CN110526538A includes an upper filter cloth and a lower filter cloth conveyed by a guide roller system. It also includes a material pipe for conveying materials between the upper and lower filter cloths. The chain conveyor is also equipped with a pressing guide roller, which presses the upper filter cloth, materials and lower filter cloth into a composite material layer. The solid-liquid separation filter press is used to dewater the materials to be dewatered.

[0006] The two existing technologies mentioned above have the following drawbacks: during the sludge dewatering process, solid sludge particles will continuously accumulate on the surface of the filter cloth, and the filter cloth is prone to clogging, especially during continuous long-term operation; during the process of stacking the upper filter section and the lower filter cloth into layers, the misalignment area is large, resulting in low processing efficiency. Summary of the Invention

[0007] Therefore, the present invention provides a liquid-containing material pressure filtration device that optimizes the conveying and stacking mechanism of the filter cloth, ensuring that the filter cloth is not easily misaligned during the stacking process, making the solid-liquid separation process more thorough and enabling automatic cleaning of the filter cloth.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A liquid-containing material pressure filter device, comprising

[0010] The conveying unit is used to convey the filter cloth and the liquid material located between the filter cloth to the filter press.

[0011] The feeding unit, in conjunction with the conveying unit, is used to convey liquid materials between the upper filter cloth and the lower filter cloth;

[0012] The fabric stacking unit includes an upper fabric assembly and a lower fabric assembly, which are used to supply and convey the upper filter cloth and the lower filter cloth, respectively.

[0013] A filter press, located at the end of the conveying unit, is used to apply pressure to the liquid material wrapped between the upper filter cloth and the lower filter section to perform solid-liquid separation.

[0014] The separation unit, located in the recovery path of the upper and lower filter cloths, is used to peel solid materials from the surface of the filter cloth.

[0015] The filter cloth cleaning unit has two units, which are respectively located in the recovery paths of the upper filter cloth and the lower filter cloth, and are used to clean the recovered upper filter cloth and the lower filter cloth.

[0016] The control unit, electrically connected to the above-mentioned units, is used to control the operating status and working parameters of the equipment.

[0017] The rack is used to house the aforementioned units.

[0018] Furthermore: the conveying unit includes a first motor, a conveyor belt, and a movable frame for mounting the conveyor belt.

[0019] The movable frame and the slide rails mounted on the frame are slidably connected.

[0020] The movable frame includes an upper support and a lower support. The upper support is located above the lower support, and its length is greater than that of the lower support.

[0021] The conveyor belt covers the upper and lower end faces of the upper support member.

[0022] One end of the lower support component is equipped with a passive roller, and the other end is equipped with two symmetrical traction plates. The traction plates have movable notches, and traction wheels are movably connected within the movable notches.

[0023] Furthermore, a traction unit for driving the displacement of the movable frame is provided in front of the movable frame. The traction unit includes a traction frame, a second motor, gears, a chain, and a traction shaft.

[0024] The gears are four in number and are respectively installed at the four corners of the traction frame.

[0025] Two gears in the X-axis direction of the traction frame are connected by a chain, and two gears in the Z-axis direction of the traction frame are connected by a traction shaft. The traction shaft and the traction frame are rotatably connected.

[0026] One end of the traction wheel is connected to the chain, and the output end of the second motor is connected to the traction shaft near the traction wheel.

[0027] Furthermore: the frame is equipped with several rollers for the conveyor belt to pass through, and each roller is rotatably connected to the frame.

[0028] The output end of the first motor is connected to the gear on the first shaft roller via a chain.

[0029] The second and third rollers are on the same horizontal line in the Y-axis direction, and the second and first rollers are on the same horizontal line in the X-axis direction.

[0030] The upper support member is provided with a fourth roller at its end. This fourth roller and the third roller are on the same horizontal line in the X-axis direction.

[0031] The lower support is also equipped with two rollers for the conveyor belt to contact.

[0032] Furthermore: the upper fabric assembly and the lower fabric assembly are respectively located on the upper and lower sides of the movable frame and are symmetrically arranged. Each of the upper fabric assembly and the lower fabric assembly includes a fabric winding frame, a fabric winding motor, a fabric winding roller, and several support rollers.

[0033] Both ends of the fabric rolling roller are rotatably connected to the fabric rolling frame, the output end of the fabric rolling motor is connected to one end of the fabric rolling roller, the idler roller is placed on the frame and rotatably connected to the bearing on the frame, the upper filter cloth and the lower filter cloth are respectively placed on the corresponding fabric rolling roller, the upper filter cloth and the lower filter cloth extend to the conveyor belt after passing around each idler roller, and are pulled by the conveyor belt in the direction of the conveyor belt movement.

[0034] Furthermore, the separation unit includes a hopper and a scraper blade. The feed inlet of the hopper is located below the scraper blade, and the scraper blade is placed on the recovery paths of the upper filter cloth layer and the lower filter cloth layer, respectively.

[0035] Furthermore, the filter cloth cleaning unit includes a washing group, a water control group, and a vacuum water absorption tank through which the filter cloth passes in sequence. The washing group includes a cleaning tank, a lifting rod, and a tank cover. The tank cover is slidably connected to the frame. The output end of the lifting rod is connected to the tank cover. Both the cleaning tank and the tank cover are equipped with brush rollers that are rotatably connected to them. The cleaning tank and the tank cover are equipped with a third motor that drives the brush rollers. The output end of the third motor is connected to one end of the brush rollers via a transmission belt to drive the brush rollers to rotate.

[0036] The cleaning box is equipped with a roller at the port where the upper and lower filter cloths enter the box. The cleaning box and the box cover are also equipped with high-pressure pipes in a symmetrical relationship. Several nozzles are installed on the high-pressure pipes. The high-pressure pipes are connected to a water source through a water pipe. A water outlet is opened on one side of the cleaning box, and wastewater is discharged through a sewage pipe.

[0037] Furthermore: the water control assembly includes a water receiving box and a water control roller, the water control roller and the water receiving box are rotatably connected, the water control roller is located near the port of the cleaning tank, and the bottom of the water receiving box is provided with a drain outlet, which discharges drained water through a drain pipe.

[0038] Furthermore, the frame is equipped with two heavy rollers that cooperate with the corresponding filter cloth cleaning units. These two heavy rollers are used to roll the upper filter cloth and the lower filter cloth, respectively, and the heavy rollers and the frame are slidably connected.

[0039] Furthermore, an auxiliary roller is rotatably connected to the box cover. The upper and lower filter cloths pass through the box rollers via the auxiliary rollers and are connected to each support roller. During this process, they also pass through the heavy rollers. When the lifting rod drives the box cover to rise and fall, the heavy rollers carry the upper and lower filter cloths up and down.

[0040] Compared with the shortcomings of the prior art, the beneficial effects of the present invention are as follows:

[0041] This invention optimizes the transmission and stacking mechanism of the filter cloth, achieving uniform feeding and stacking of sludge inside the filter press. This design significantly improves the utilization rate of the filter cloth in the filter press, ensuring that each layer of filter cloth can withstand pressure evenly, thereby greatly improving the solid-liquid separation efficiency, avoiding the problem of incomplete dewatering in traditional technologies, and ensuring that the moisture content of the sludge can be effectively reduced.

[0042] By combining high-pressure water jets, brush rollers, and vacuum suction devices, a more efficient and thorough cleaning effect can be achieved, effectively removing sludge particles from the surface of the filter cloth, reducing the risk of filter cloth clogging, and extending the service life of the filter cloth. Attached Figure Description

[0043] Figure 1 This is the front view of the present invention;

[0044] Figure 2This is a three-dimensional schematic diagram of the present invention;

[0045] Figure 3 This is a partial schematic diagram of the present invention.

[0046] Frame 1, First motor 11, Second motor 12, Third motor 13, Conveyor belt 2, Upper filter cloth 21, Lower filter cloth 22, Movable frame 3, Upper support 31, Lower support 32, Passive roller 33, Traction plate 34, Traction wheel 35, First shaft roller 41, Second shaft roller 42, Third shaft roller 43, Fourth shaft roller 44, Filter press 5, Traction frame 6, Upper cloth assembly 71, Lower cloth assembly 72, Cloth rolling frame 701, Cloth rolling motor 702, Cloth rolling roller 703, Support roller 704, Hopper 81, Scraper 82, Washing and brushing assembly 9, Vacuum suction box 100, Cleaning box 91, Lifting rod 92, Brush roller 93, Box roller 94, High pressure pipe 95, Nozzle 96, Water receiving box 101, Water control roller 102, Heavy roller 45. Detailed Implementation

[0047] Reference Figures 1 to 3 The embodiments of the present invention will be further described below.

[0048] This embodiment describes a specific implementation of a liquid-containing material pressure filter device constructed according to the technical solution of the claims. This device is used for efficient solid-liquid separation of liquid materials (such as sludge, suspended solids in wastewater treatment processes, etc.).

[0049] The conveying unit is used to transport the upper filter cloth, the lower filter cloth, and the liquid material located between the upper and lower filter cloths to the filter press.

[0050] The conveying unit includes:

[0051] First motor 11: Provides power to drive the conveyor belt via a drive chain and gear system.

[0052] Conveyor belt 2: Supported by the movable frame 3, it carries the filter cloth and transports the material along the track to the filter press. The conveyor belt covers the upper and lower end faces of the upper support 31.

[0053] Movable frame 3: Connected to frame 1 via slide rails, it can slide along frame 1. Movable frame 3 includes an upper support 31 and a lower support 32, supporting and mounting the conveyor belt. One end of the lower support 32 is provided with a passive roller 33, and the other end is provided with two symmetrically arranged traction plates 34. Movable notches are opened on the traction plates, and traction wheels 35 are movably connected within the movable notches.

[0054] The frame 1 is equipped with several rollers for the conveyor belt to pass through. Each roller is connected to the frame 1 via a bearing, ensuring free rotation of the roller and smooth passage of the conveyor belt. The position and number of rollers are designed according to the width of the conveyor belt, the load, and the transmission path to ensure that the conveyor belt does not deviate or slip during operation.

[0055] The output end of the first motor 11 is connected to the gear on the first shaft roller 41 via a chain.

[0056] The second roller 42 and the third roller 43 are on the same horizontal line in the Y-axis direction, and the second roller 42 and the first roller 41 are on the same horizontal line in the X-axis direction.

[0057] The upper support member 31 is provided with a fourth shaft roller 44 at its end. The fourth shaft roller 44 and the third shaft roller 43 are on the same horizontal line in the X-axis direction. The lower support member 32 is also provided with two shaft rollers for the conveyor belt to abut.

[0058] The movement process of the movable frame 3 and the conveyor belt 2:

[0059] The first motor 11 is mounted on the bottom of the frame 1 and then connected to a gear via a chain. The gear is mounted on the first shaft roller 41 and drives the conveyor belt 2 to move along the movable frame 3, feeding the filter cloth and the liquid material located between the filter cloths into the filter press 5. The conveyor belt 2 is covered by the upper support 31 and the lower support 32 to ensure the stability of the filter cloth during movement.

[0060] As the conveyor belt 2 moves, the movable frame 3 connects with the slide rail on the frame 1, allowing the conveyor belt 2 to slide along the predetermined track and transport the filter cloth to the feed port of the filter press 5.

[0061] Structure and function of traction unit

[0062] The traction unit includes a traction frame 6, a second motor 12, gears, a chain, and a traction shaft. There are four gears, which are respectively installed at the four corners of the traction frame 6. Two gears in the X-axis direction of the traction frame 6 are connected by a chain, and two gears in the Z-axis direction of the traction frame 6 are connected by a traction shaft. The traction shaft and the traction frame 6 are rotatably connected. One end of the traction wheel is connected to the chain, and the output end of the second motor 12 is connected to the traction shaft near the traction wheel.

[0063] During the conveying process, while the second motor 12 drives the chain to move, the traction wheel on the chain will carry the traction plate 34 to move, so that the traction plate 34 drives the movable frame 3 and the conveyor belt 2 forward, and sends the filter cloth into the filter press 5.

[0064] After the conveyor belt 2 reaches the inlet of the filter press 5, the second motor 12 reverses the drive, and the traction plate 34 and the movable frame 3 move backward, bringing back the conveyor belt 2 and the filter cloth, returning to the starting position, ready for the next feed.

[0065] Layout and movement of the rollers

[0066] The first roller 41 and the second roller 42 are on the same horizontal line, as are the third roller 43 and the fourth roller 44. This layered arrangement extends the length of the conveyor belt. A passive roller 33 connects the first roller 41 and the fourth roller 44. The diameter of the passive roller 33 is larger than that of the other rollers, allowing the conveyor belt to be tensioned in four layers. This provides sufficient length of movement for the conveyor belt when it is pulled by the traction frame 6 during the operation of the traction unit. The passive roller 33 provides additional support through its larger diameter, ensuring the conveyor belt maintains proper tension under the drive of the traction unit. Especially when the traction unit reverses the flow of the filter cloth, the passive roller 33 increases the support area, ensuring smooth retraction of the conveyor belt and preventing the filter cloth from being affected during retraction. Furthermore, the passive roller 33 can be adjusted in position to regulate the tension on the conveyor belt.

[0067] Structure and movement process of overlapping fabric units

[0068] The fabric stacking unit consists of an upper fabric assembly 71 and a lower fabric assembly 72, which are responsible for supplying and conveying the upper and lower filter fabrics, respectively. The upper fabric assembly 71 and the lower fabric assembly 72 are respectively located on the upper and lower sides of the movable frame 3.

[0069] Each fabric assembly includes a fabric roll frame 701, a fabric roll motor 702, a fabric roll roller 703, and several idler rollers 704. The fabric roll motor 702 drives the fabric roll roller 703 to unfold the filter cloth and convey it to the conveyor belt.

[0070] The filter cloth is unrolled from the cloth roll frame 701 by the cloth roll motor 702 driving the cloth roll roller 703.

[0071] Both ends of the fabric rolling roller 703 are rotatably connected to the fabric rolling frame 701. The output end of the fabric rolling motor 702 is connected to one end of the fabric rolling roller 703. The idler roller 704 is placed on the frame 1 and rotatably connected to the bearing on the frame. The upper filter cloth and the lower filter cloth are respectively placed on the corresponding fabric rolling roller 703. After passing around each idler roller 704, the upper filter cloth and the lower filter cloth extend to the conveyor belt 2 and are pulled by the conveyor belt in the direction of the conveyor belt movement.

[0072] Driven by the traction unit, the conveyor belt 2 carries the filter cloth into the filter press 5 to begin filtration.

[0073] Structure and movement of a filter press

[0074] The filter press is located at the end of the conveying unit, and its main function is to separate liquid materials into solids and liquids by applying pressure. The filter head applies pressure to the liquid material located between the upper filter cloth 71 and the lower filter cloth 72. Under the action of the filter cloth, the water in the liquid material is squeezed out, forming a sludge cake.

[0075] After the filter cloth is placed into the filter press, the filter head descends, applying pressure to the liquid material between the filter cloth. As the pressure increases, the liquid is discharged, leaving solid sludge, forming a sludge cake. A wastewater outlet is located at the bottom of the filter press, connected to a wastewater tank.

[0076] Structure and motion process of the separation unit

[0077] The function of the separation unit is to peel off the solid material accumulated on the filter cloth from the surface of the filter cloth. It includes a hopper 81 and a scraper 82, which is set in the recovery path to peel off the solid material from the surface of the filter cloth.

[0078] As the upper filter cloth 71 and the lower filter cloth 72 pass through the recycling path, the scraper blade 82 scrapes the sludge particles off the surface of the filter cloth by moving downwards and collects them into the hopper 81. The stripped solid material is discharged through the outlet of the hopper 81, ready to enter the next processing stage.

[0079] Structure and movement of the filter cloth cleaning unit:

[0080] The filter cloth cleaning unit includes a washing assembly 9, a water control assembly, and a vacuum water suction box 100, which are used to clean the recycled filter cloth to ensure the cleanliness of the filter cloth and restore its water permeability.

[0081] The washing assembly 9 includes a washing tank 91, a lifting rod 92, and a brush roller 93. The brush roller is driven by a third motor 13. The washing tank and the tank cover are equipped with a third motor 13 that drives the brush roller. The output end of the third motor is connected to one end of the brush roller via a transmission belt to drive the brush roller to rotate for cleaning the filter cloth. A tank roller 94 is provided at the port on the washing tank 91 where the upper filter cloth 71 and the lower filter cloth 72 enter the tank. The washing tank and the tank cover are also equipped with symmetrically arranged high-pressure pipes 95, which are equipped with several nozzles 96. The high-pressure pipes are connected to a water source through a water pipe. A water outlet is opened on one side of the washing tank, and the water outlet discharges wastewater through a sewage pipe.

[0082] Water control assembly: includes a water receiving box 101 and a water control roller 102, used to drain water after washing. The water control roller 102 and the water receiving box 101 are rotatably connected. The water control roller 102 is located near the port of the washing tank 91. The bottom of the water receiving box 101 is provided with a drain outlet, which discharges drained water through a drain pipe.

[0083] Vacuum water absorption box 100: It further absorbs moisture from the filter cloth through vacuum water absorption function.

[0084] After the upper filter cloth 71 and the lower filter cloth 72 enter the cleaning tank 91, the lifting rod 92 controls the lowering of the tank cover. The output end of the third motor 13 is connected to one end of the brush roller through the transmission belt, driving the brush roller to rotate and contact the filter cloth to remove solid sludge from the filter cloth. At the same time, the nozzle 96 on the high pressure pipe 95 sprays high pressure water to clean the filter cloth.

[0085] The water after washing is discharged through the water control roller 102 and the water receiving box 101, and then enters the vacuum suction box 100 for further drainage.

[0086] The control unit is electrically connected to the aforementioned units, enabling unified control of the equipment. It can automatically adjust the operating parameters of each unit based on the real-time operating status of the equipment (such as pressure, filter cloth movement speed, cleaning status, etc.).

[0087] The control unit monitors parameters such as the speed of the conveyor belt, the tension of the filter cloth, and the working pressure of the filter press in real time.

[0088] Based on the input operating data, the system controls the motor speed, filter cloth feed speed, cleaning frequency, etc., to ensure efficient and stable operation of the equipment.

[0089] The working states of the second motor 12 and the first motor 11 are automatically adjusted to achieve an efficient solid-liquid separation process according to different operational requirements.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure filter device for liquid-containing materials, characterized in that, include The conveying unit is used to convey the filter cloth and the liquid material located between the filter cloth to the filter press. The conveying unit includes a first motor, a conveyor belt, and a movable frame for mounting the conveyor belt. The movable frame and the slide rails mounted on the frame are slidably connected. The movable frame includes an upper support and a lower support. The upper support is located above the lower support, and its length is greater than that of the lower support. The conveyor belt covers the upper and lower end faces of the upper support member. One end of the lower support component is equipped with a passive roller, and the other end is equipped with two symmetrical traction plates. The traction plates have movable notches, and traction wheels are movably connected within the movable notches. A traction unit for driving the displacement of the movable frame is provided at the front of the movable frame. The traction unit includes a traction frame, a second motor, gears, a chain, and a traction shaft. The gears are four in number and are respectively installed at the four corners of the traction frame. Two gears in the X-axis direction of the traction frame are connected by a chain, and two gears in the Z-axis direction of the traction frame are connected by a traction shaft. The traction shaft and the traction frame are rotatably connected. One end of the traction wheel is connected to the chain, and the output end of the second motor is connected to the traction shaft near the traction wheel. The fabric stacking unit includes an upper fabric assembly and a lower fabric assembly, which are used to supply and convey the upper filter cloth and the lower filter cloth, respectively. The upper and lower fabric assemblies are respectively located on the upper and lower sides of the movable frame and are arranged symmetrically. Each upper and lower fabric assemblies includes a fabric winding frame, a fabric winding motor, a fabric winding roller, and several support rollers. Both ends of the fabric rolling roller are rotatably connected to the fabric rolling frame, and the output end of the fabric rolling motor is connected to one end of the fabric rolling roller. The idler roller is mounted on the frame and rotatably connected to the bearing on the frame. The upper and lower filter cloths are respectively mounted on their corresponding fabric rolling rollers. After passing over each idler roller, the upper and lower filter cloths extend onto the conveyor belt and are pulled by the conveyor belt in the direction of its movement. The feeding unit, in conjunction with the conveying unit, is used to convey liquid materials between the upper and lower filter cloths; A filter press, located at the end of the conveying unit, is used to apply pressure to the liquid material wrapped between the upper filter cloth and the lower filter section to perform solid-liquid separation. A separation unit, located in the recovery path of the upper and lower filter cloth layers, is used to peel solid materials from the surface of the filter cloth. The separation unit includes a hopper and scraper blades. The hopper's inlet is positioned below the scraper blades, which are positioned on the recovery paths of the upper and lower filter cloth layers, respectively. The filter cloth cleaning unit has two units, which are respectively located in the recycling paths of the upper and lower filter cloths, and are used to clean the recycled upper and lower filter cloths. The filter cloth cleaning unit includes a washing group, a water control group, and a vacuum water absorption tank through which the filter cloth passes in sequence. The washing group includes a cleaning tank, a lifting rod, and a tank cover. The tank cover is slidably connected to the frame. The output end of the lifting rod is connected to the tank cover. Both the cleaning tank and the tank cover are equipped with brush rollers that are rotatably connected to them. A third motor that drives the brush rollers is installed on the cleaning tank and the tank cover. The output end of the third motor is connected to one end of the brush rollers through a transmission belt to drive the brush rollers to rotate. The cleaning tank has rollers at the ports where the upper and lower filter cloths enter the tank. The cleaning tank and its cover are also equipped with symmetrically arranged high-pressure pipes, each with several nozzles. These high-pressure pipes are connected to a water source via water pipes. An outlet is located on one side of the cleaning tank, and wastewater is discharged through a sewage pipe from the outlet. An auxiliary roller is rotatably connected to the lid. The upper and lower filter cloths pass through the auxiliary rollers, then through the box rollers, and connect to the various support rollers. During this process, they also pass through the heavy rollers. When the lifting rod drives the lid to rise or fall, the heavy rollers carry the upper and lower filter cloths up and down. The water control assembly includes a water receiving box and a water control roller, which are rotatably connected. The water control roller is located near the port of the cleaning tank. The bottom of the water receiving box has a drain outlet, which discharges drained water through a drain pipe. The control unit, electrically connected to the above-mentioned units, is used to control the operating status and working parameters of the equipment; The frame is used to house the aforementioned units. The frame is equipped with several rollers for the conveyor belt to pass through, and each roller is rotatably connected to the frame. The output end of the first motor is connected to the gear on the first shaft roller via a chain. The second and third rollers are on the same horizontal line in the Y-axis direction, and the second and first rollers are on the same horizontal line in the X-axis direction. The upper support member is provided with a fourth roller at its end. This fourth roller and the third roller are on the same horizontal line in the X-axis direction. The lower support is also equipped with two rollers for the conveyor belt to contact. The frame is equipped with two heavy rollers that cooperate with the corresponding filter cloth cleaning units. These two heavy rollers are used to roll the upper and lower filter cloths respectively, and the heavy rollers are slidably connected to the frame.

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