Filter press with distributed filter cloth driving function

Abstract

The invention discloses a filter press with a distributed filter cloth driving function, and relates to the field of filter presses, and the filter press comprises a rack and a locking assembly. The locking assembly comprises an air cylinder base, first left and right fixing pieces and an auxiliary hydraulic cylinder. The auxiliary hydraulic cylinder telescopic rod is connected with the first fixing piece, and the main hydraulic cylinder telescopic rod is connected with the pressing plate. Four corners of the pressing plate are movably arranged on the rack through fixing pieces II and III, and a plurality of groups of filter plates are arranged on one side, far away from the locking component, of the pressing plate. The top of the filter plate is provided with a driving unit assembly and a feeding hole, and the bottom is provided with a pipeline II and a water inlet II. The auxiliary hydraulic cylinder is used for pushing the pressing plate to extrude the filter plate to a preset position and then locking the air cylinder seat, the main hydraulic cylinder is subjected to secondary pressurization, and the driving unit assembly is used for achieving automatic mud discharging after the filter plate is opened and closed; by means of the driving unit assembly, decentralized driving control over the filter cloth is achieved, the problem that in an existing integral driving mode, due to uneven stress, the filter cloth is deviated and wrinkled, and then mud is blocked in the discharging process is solved, and the integral mud discharging efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filter press, in particular to a filter press with distributed filter cloth driving function. BACKGROUND

[0002] In the industrial production process, the filter press as the key equipment to realize solid-liquid separation is widely used in chemical industry, mining, environmental protection and sewage treatment and many other fields. By applying pressure to the slurry, the liquid can pass through the filter cloth, and the solid particles are intercepted to form filter cake, so as to complete the solid-liquid separation operation. The unloading function as an important link in the working cycle of the filter press directly affects the operation efficiency, maintenance cost and overall production progress of the equipment.

[0003] In the existing filter press, the overall driving structure is usually used to drive the filter cloth to move to realize the unloading. However, this overall driving method has obvious limitations, and the unloading function is poor, and the unloading process often appears to be stuck.

[0004] Specifically, due to the large coverage area of the filter cloth, it is difficult to ensure that the filter cloth is evenly stressed when the filter cloth is driven as a whole, which can easily cause the filter cloth to deviate, wrinkle or be pulled during movement. When the filter cloth deviates or wrinkles, the filter cake cannot be smoothly separated from the filter cloth, thereby causing the unloading channel to be blocked and causing the unloading to be stuck. Once stuck, not only does it need to be stopped for manual cleaning, which seriously affects the production efficiency, but it may also damage the filter cloth and related driving components due to forced operation, increasing the maintenance cost and failure rate of the equipment, and bringing many inconveniences to industrial production. SUMMARY

[0005] The present application provides a filter press with distributed filter cloth driving function.

[0006] A filter press with distributed filter cloth driving function, comprising: a rack, a locking assembly is fixedly arranged on the front side of the rack, the locking assembly comprising: a cylinder seat, a main hydraulic cylinder is fixedly arranged in the center of the cylinder seat, a fixed part one is arranged on the left and right sides of the cylinder seat, a roller one is arranged on the left and right sides of the fixed part one, the fixed part one is used to fix the cylinder seat on the rack, a vice hydraulic cylinder is arranged on the left and right sides of the rack, the top of the extension rod of the vice hydraulic cylinder is connected with the fixed part one; A pressure plate is fixedly installed on the top of the main hydraulic cylinder telescopic rod. Two fixing parts are installed at the top two corners of the pressure plate. The fixing parts movably mount the pressure plate on the frame. Multiple sets of filter plates are movably mounted on the side of the frame away from the locking assembly. Each filter plate has a drive unit assembly on the top left and right sides. A feed hole is provided in the center of the top of the filter plate. Pipe parts are provided at the bottom left and right corners of the filter plate. A water inlet is provided below each pipe part. The drive unit assembly is used to realize automatic sludge discharge after the filter plate opens and closes. The locking assembly is used to lock the cylinder seat after the auxiliary hydraulic cylinder telescopically drives the pressure plate and cylinder seat to squeeze the filter plate to the rear of the frame and reaches the preset position, and then the main hydraulic cylinder is started to squeeze the filter plate.

[0007] Preferably, the drive unit assembly includes: an L-shaped base and a pull plate chain. The drive unit assembly is arranged crosswise on the top of each filter plate. The bottom of the L-shaped base is bolted to the top left and right sides of the filter plate. A roller is provided in the lower center of the L-shaped base. A planetary reducer is fixedly provided on the top side wall of the L-shaped base. A drive shaft is rotatably provided on the planetary reducer. A gear is fixedly provided at the other end of the drive shaft. An upper hanging cloth shaft is provided on the end of the L-shaped base away from the planetary reducer. Both the front and rear ends of the upper hanging cloth shaft are fixedly connected to one end of the pull plate chain. The pull plate chain is wound around the drive shaft and the roller. The other end of the pull plate chain is fixedly connected to the bottom of the filter plate. A junction box is fixedly provided on the side of the planetary reducer away from the drive shaft. A drag chain is provided at the bottom of the junction box. The drag chains between the junction boxes are connected in pairs. The upper hanging cloth shaft is used to fix the filter cloth on the upper hanging cloth shaft. Under the action of the drive motor, the drive shaft rotates and drives the upper hanging cloth shaft to rise or fall, so as to realize the automatic unloading of the filter cloth on the upper hanging cloth shaft.

[0008] Preferably, each filter plate is provided with an expansion diaphragm on both the left and right sides. The water inlet chamber of the expansion diaphragm is connected to the pipe fitting three on the rear side of the bottom of the filter plate. The connecting pipes on the front and rear sides below each filter plate are respectively connected to pipe fitting two and pipe fitting three. Inlet 2 is used to spray cleaning water onto the filter cloth through the connected nozzle to clean the filter cloth; Pipe fitting three is used to transport squeezed water through the expansion diaphragm of the filter plate, so that the expansion diaphragm expands and squeezes the filter cake, squeezing out the residual water, and the diaphragm water channel is completely isolated from the slurry channel. Pipe component two is used to compress the solids to form a filter cake, and the filtered liquid is discharged from pipe component two.

[0009] Preferably, a feed main pipe is provided on the rear side plate of the frame, a first end valve block is fixedly provided at the bottom of the rear side of the frame, the first end valve block is connected to the auxiliary hydraulic cylinder pipeline, and a communication power block one and a communication power block two are provided on the left and right sides of the top of the rear side of the frame, and the first end valve block is electrically connected to the communication power block one and the communication power block two. The first valve block is used to control the synchronous start and extension of the auxiliary hydraulic cylinders on the left and right sides, and to control the stroke. The feed main pipe is connected to the feed hole on the top of the filter plate and is used to transport slurry to the filter chamber.

[0010] Preferably, a chain 1 is provided on the fixing member 2. The chain 1 passes through the filter plate and is fixedly connected to each filter plate. The other end of the chain 1 is fixed to the top of the leftmost filter plate. A chain 2 is provided on the bottom front and back sides of the rightmost filter plate. The chain 2 passes through the filter plate and is fixedly connected to each filter plate. The other end of the chain 2 is fixed to the leftmost filter plate. The chain 1 and chain 2 have the same length. Chain 1 and Chain 2 are used to separate the filter plates by means of the clamping plate when the auxiliary hydraulic cylinder is started.

[0011] Preferably, an end valve block is fixedly installed at the center of the top of the cylinder seat. The end valve block is connected to the main hydraulic cylinder pipeline. A communication power block three is installed on the right side of the top of the cylinder seat, and a communication power block four is installed on the top of the front side of the frame. An electric cable chain is installed on the left side of the cylinder seat. Part of the cable of the end valve block is electrically connected to the communication power block four. The hydraulic pipeline of the end valve block passes through the electric cable chain and is connected to the pump station. The hydraulic pipeline of the first end valve block is connected to the pump station through a fixed pipeline. Part of the cable of the end valve block passes through the electric cable chain and is electrically connected to the communication power block four. The pump station is used to provide power oil to the hydraulic valve block and power the hydraulic cylinder.

[0012] Preferably, gateway one and gateway two are respectively installed on the rear side of the rack. Gateway one is electrically connected to communication power block one and communication power block two, gateway two is electrically connected to communication power block three and communication power block four, and the gateway is electrically connected to the external PLC cabinet. The gateway is used to convert the command signals of the PLC cabinet into CAN bus protocol commands, and the communication connector is used to transmit the CAN bus protocol commands to the embedded controllers of the end valve block and the head valve block, thereby controlling the start and stop of the main hydraulic cylinder and the auxiliary hydraulic cylinder.

[0013] Preferably, gateway one is connected to the front row of junction boxes in sequence via cable chains, and gateway two is connected to the rear row of junction boxes in sequence via cable chains. Gateway one and gateway two are used to control the synchronous operation of the drive unit components for mud unloading.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The drive unit components adopt a distributed design, with the units arranged alternately on the top of each filter plate. Each filter plate is equipped with an independent drive unit, realizing decentralized drive control of the filter cloth. This distributed structure ensures that the filter cloth on each filter plate receives a balanced driving force, avoiding the problem of sludge jamming caused by uneven force distribution leading to filter cloth displacement and wrinkles in existing integral drives, effectively ensuring the smoothness of the sludge unloading process.

[0015] The planetary reducer steering gear drives the drive shaft to rotate, which in turn controls the raising or lowering of the upper cloth hanging shaft via a pull plate chain, achieving precise movement of the filter cloth. The planetary reducer steering gear provides a stable transmission ratio, ensuring the stability and accuracy of the drive shaft rotation. This makes the raising and lowering movement of the upper cloth hanging shaft smoother and more controllable, ensuring that the filter cloth moves along a preset trajectory. This further improves the reliability of sludge unloading and reduces the risk of jamming caused by unstable movement.

[0016] Gateway 1 is connected to the front row of junction boxes in sequence via cable chains, and Gateway 2 is connected to the rear row of junction boxes in sequence via cable chains. This enables synchronous control of the drive unit components, ensuring the coordination and consistency of multiple filter cloth unloading operations, improving the overall unloading efficiency, and further highlighting the advantages of the drive unit components in enhancing the performance of the filter press. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of a filter press with a distributed filter cloth driving function according to an embodiment of the present disclosure is shown. Figure 2 A top plan view of a filter press with a distributed filter cloth driving function according to an embodiment of the present disclosure is shown. Figure 3 A schematic left-side view of a filter press with a distributed filter cloth driving function according to an embodiment of the present disclosure is shown. Figure 4 This diagram illustrates a three-dimensional structure of a drive unit component in a filter press with a distributed filter cloth drive function according to an embodiment of the present disclosure. Figure 5 This diagram shows a left-side plan view of the drive unit assembly in a filter press with a distributed filter cloth drive function according to an embodiment of the present disclosure. Figure 6 This is a right-side plan view of the drive unit assembly in a filter press with a distributed filter cloth drive function according to an embodiment of the present disclosure. Figure 7 This diagram shows an enlarged three-dimensional structural schematic of the front drive unit assembly in a filter press with a distributed filter cloth drive function according to an embodiment of the present disclosure. Figure 8 This diagram shows an enlarged three-dimensional structural schematic of the rear drive unit assembly in a filter press with a distributed filter cloth drive function according to an embodiment of the present disclosure. Figure 9 This diagram shows an enlarged three-dimensional structural schematic of the head drive unit component in a filter press with a distributed filter cloth drive function according to an embodiment of the present disclosure. Figure 10 This diagram illustrates a planar structural schematic of a drive unit component in a filter press with a distributed filter cloth drive function according to an embodiment of the present disclosure. Figure 11 This diagram illustrates a planar structure of a filter plate in a filter press with a distributed filter cloth driving function according to an embodiment of the present disclosure. Figure 12 This diagram shows a schematic left-side plan view of a filter plate in a filter press with a distributed filter cloth driving function according to an embodiment of the present disclosure. Figure 13 A three-dimensional structural diagram of a filter plate in a filter press with a distributed filter cloth driving function according to an embodiment of the present disclosure is shown. Figure 14 This diagram shows an enlarged three-dimensional structural diagram of the bottom of the filter plate in a filter press with a distributed filter cloth driving function according to an embodiment of the present disclosure. Figure 15 This diagram shows an enlarged three-dimensional structural schematic of the bottom chain 2 of the filter plate in a filter press with a distributed filter cloth driving function according to an embodiment of the present disclosure. Figure 16 This diagram shows an enlarged three-dimensional structural schematic of a fixing component in a filter press with a distributed filter cloth driving function according to an embodiment of the present disclosure. Figure 17 This diagram illustrates a gateway synchronization control system in a filter press with a distributed filter cloth driving function, according to an embodiment of the present disclosure.

[0018] The components include: 1. Frame; 2. Locking assembly; 3. Drive unit assembly; 301. Junction box; 302. Drive motor; 303. Upper hanging cloth shaft; 304. Drive shaft; 305. Chain 1; 3051. Chain 2; 3052. Pull plate chain; 306. L-shaped base; 307. Roller; 308. Cable chain; 309. Planetary reducer steering gear; 310. Gear; 4. End valve block; 501. 502. Communication connector block 3; 503. Communication connector block 1; 504. Communication connector block 2; 505. Communication connector block 4; 6. Auxiliary hydraulic cylinder; 7. Filter plate; 9. Pressing plate; 10. First end valve block; 101. Feed main pipe; 201. Main hydraulic cylinder; 202. Fixing component 1; 203. Cable drag chain; 701. Water inlet 2; 702. Pipe fitting 2; 703. Feed hole; 901. Fixing component 2. Detailed Implementation

[0019] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0020] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0021] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0022] Reference Figures 1-17 As shown, a filter press with a distributed filter cloth driving function in this embodiment includes a frame 1. A locking assembly 2 is fixedly installed on the front side of the frame 1 to provide basic support for the locking action of the entire device. A main hydraulic cylinder 201 is fixed in the center of the cylinder seat in the locking assembly 2. The main hydraulic cylinder 201 is the core power component for realizing the extrusion of the filter plates.

[0023] The fixing parts 202 on both sides of the cylinder seat, with rollers on both sides, make the movement of the cylinder seat on the frame 1 smoother, and the fixing parts 202 stably fix the cylinder seat on the frame 1. The auxiliary hydraulic cylinders 6 on both sides of the frame 1 have their telescopic rods connected to the top of the fixing parts 202, providing power for the movement of the cylinder seat and the pressure plate.

[0024] The clamping plate 9, fixed to the top of the telescopic rod of the main hydraulic cylinder 201, is movably mounted on the frame 1 by fixing parts 901 at its two top corners, ensuring that the clamping plate 9 can move flexibly. Multiple sets of filter plates 7 are movably mounted on the side of the frame 1 away from the locking assembly 2. The drive unit assemblies 3 on the left and right sides of the top of each filter plate 7 are key to achieving automatic sludge unloading. The feed hole 703 at the center of the top of the filter plate 7 is used to receive slurry, the pipe component 3 at the bottom right corner provides water to the expansion diaphragm, and the pipe component 702 at the bottom left corner is the filtered water outlet.

[0025] After the filter plate 7 is opened and closed, the drive unit component 3 starts the automatic sludge unloading process. The locking component 2 locks the cylinder seat after the auxiliary hydraulic cylinder 6 drives the relevant components to squeeze the filter plate 7 to the preset position. Then the main hydraulic cylinder 201 starts to further squeeze the filter plate 7 to ensure the filtration effect.

[0026] In some examples, the bottom of the L-shaped base 306 of the drive unit assembly 3 is bolted to the top left and right sides of the filter plate 7. This connection method facilitates disassembly and maintenance, and allows for easy replacement of parts after prolonged use. The roller 307 in the center of the lower part of the L-shaped base 306 reduces friction during the movement of the pull plate chain 3052, extending the chain's service life.

[0027] In some examples, the connection between the planetary reducer steering gear 309 and the drive shaft 304 is provided with a wear-resistant bearing. The wear-resistant bearing can reduce the wear when the two rotate relative to each other, ensure the stability of the rotation of the drive shaft 304, and thus ensure the accuracy of the lifting and lowering movement of the upper cloth shaft 303, and improve the reliability of unloading mud.

[0028] In some examples, the surface of the upper cloth shaft 303 is provided with anti-slip texture. The anti-slip texture can enhance the friction between the filter cloth and the upper cloth shaft 303, prevent the filter cloth from slipping during the lifting process, ensure that the filter cloth can move according to the preset trajectory, and avoid the problem of incomplete sludge unloading caused by the slipping of the filter cloth.

[0029] In some examples, the expansion diaphragms on the left and right sides of the filter plate 7 are made of a high-strength elastic material. This material has good corrosion resistance and toughness, and can maintain stable performance during repeated expansion and compression, thus extending the service life of the expansion diaphragm and reducing the frequency of replacement.

[0030] In some examples, a sealing gasket is provided at the connection between the feed manifold 101 and the feed hole 703 at the top of the filter plate 7. The sealing gasket can effectively prevent the slurry from leaking during the conveying process, ensure that all the slurry enters the filter chamber, improve the filtration efficiency, and at the same time avoid the slurry leakage from causing pollution and corrosion to other parts of the equipment.

[0031] In some examples, chain 1 305 and chain 2 3051 are made of stainless steel. Stainless steel has excellent corrosion resistance and strength, and can be used for a long time in the humid environment where the filter press is working without easily rusting or being damaged, ensuring the stable and reliable operation of the filter plates.

[0032] In some examples, the surfaces of the end valve block 4 and the beginning valve block 10 are provided with an anti-corrosion coating. The anti-corrosion coating can resist the corrosion of hydraulic oil and the external environment, protect the internal structure of the valve block, ensure that its control accuracy of the hydraulic cylinder is not affected, and extend the service life of the valve block.

[0033] In some examples, the connection lines between Gateway 1 and Gateway 2 and the external PLC cabinet use shielded cables. Shielded cables can effectively reduce the impact of external electromagnetic interference on signal transmission, ensure the accuracy and stability of command signal transmission, and make the movements of the main hydraulic cylinder 201, the auxiliary hydraulic cylinder 6, and the drive unit assembly 3 more coordinated and precise.

[0034] The working principle of this invention is: When using this type of filter press with distributed filter cloth drive function, first select a suitable location according to the requirements of the work site, and place the frame 1 stably, using its stable structure as the foundation of the equipment. The cylinder seat of the locking assembly 2 is installed on the front side of the frame 1 through the fixing part 202. The rollers on the left and right sides of the fixing part 202 can reduce the friction when the cylinder seat moves, while ensuring its position is stable.

[0035] The tops of the extension rods of the auxiliary hydraulic cylinders 6 on the left and right sides of the frame 1 are connected to the fixing parts 202. The main hydraulic cylinder 201 is fixed in the center of the cylinder seat, and the top of its extension rod is connected to the pressure plate 9. The pressure plate 9 is movably mounted on the frame 1 through the fixing parts 901. Multiple filter plates 7 are movably arranged on the frame 1 behind the pressure plate 9. The drive unit assembly 3 is installed on the top left and right sides of each filter plate 7. The L-shaped base 306 is fixed to the filter plate 7 with bolts. The pull plate chain 3052 is wound around the drive shaft 304 and the roller 307, and the two ends are connected to the cloth hanging shaft 303 and the bottom of the filter plate 7, respectively.

[0036] The feed main pipe 101 is connected to the feed hole 703 at the top of the filter plate 7. The first valve block 10 and the last valve block 4 are respectively connected to the auxiliary hydraulic cylinder 6 and the main hydraulic cylinder 201, and are connected to the gateway through the communication power block. The gateway is then connected to the external PLC cabinet. The wires and hydraulic lines are protected by drag chains 203 and 308 to ensure that the wiring layout is neat and safe.

[0037] During normal operation of the equipment, the operator issues commands through the PLC cabinet. The gateway converts the commands into CAN bus protocol commands, which are then transmitted to the first valve block 10 and the last valve block 4 via the communication connector. The first valve block 10 controls the extension and retraction of the auxiliary hydraulic cylinder 6, which drives the fixing component 202, the cylinder seat, and the pressing plate 9 to move towards the rear of the frame 1, squeezing the filter plate 7 to the preset position. Then, the locking component 2 locks the cylinder seat.

[0038] Subsequently, the end valve block 4 activates the main hydraulic cylinder 201, further squeezing the filter plate 7 to form a sealed filter chamber. The feed main pipe 101 delivers slurry to the filter chamber through the feed hole 703. The liquid passes through the filter cloth and is discharged, while the solid particles form a filter cake. Afterward, an expansion diaphragm is installed on both the left and right sides of each filter plate. The water inlet chamber of the expansion diaphragm is connected to the pipe fitting three on the rear side of the bottom of the filter plate. The connecting pipes on the front and rear sides of each filter plate are connected to pipe fitting two and pipe fitting three, respectively. Pipe fitting three is used to deliver squeeze water to the expansion diaphragm of the filter plate, causing the expansion diaphragm to expand and squeeze the filter cake, squeezing out residual water. The diaphragm water passage is completely isolated from the slurry channel. Pipe fitting two is used to squeeze the solids to form a filter cake, and the filtered liquid is discharged from pipe fitting two.

[0039] After filtration is completed, the auxiliary hydraulic cylinder 6 extends and retracts in the opposite direction, and the clamping plate 9 separates the filter plate 7 by means of chains 305 and 3051 on the fixing component 901. At this time, the gateway controls the drive unit assembly 3 to work. The drive motor 302 drives the drive shaft 304 to rotate through the planetary reducer steering gear 309. The pull plate chain 3052 drives the upper cloth shaft 303 to rise or fall, and the filter cloth fixed on the upper cloth shaft 303 moves accordingly, realizing automatic sludge unloading. The distributed drive unit assembly 3 is arranged crisscrossed left and right to ensure that the filter cloth is evenly stressed and to avoid jamming during sludge unloading.

[0040] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A filter press with a distributed filter cloth driving function, characterized in that, include: The frame (1) is fixedly provided with a locking assembly (2) on the front side of the frame (1). The locking assembly (2) includes: a cylinder seat, a main hydraulic cylinder (201) is fixedly provided in the center of the cylinder seat, a fixing part (202) is provided on the left and right sides of the cylinder seat, a roller is provided on the left and right sides of the fixing part (202), the fixing part (202) is used to fix the cylinder seat on the frame (1), and a secondary hydraulic cylinder (6) is provided on both the left and right sides of the frame (1). The top of the telescopic rod of the secondary hydraulic cylinder (6) is connected to the fixing part (202). A pressure plate (9) is fixedly installed on the top of the telescopic rod of the main hydraulic cylinder (201). Fixing parts (901) are installed at the two corners of the top of the pressure plate (9). Fixing parts (901) movably mount the pressure plate (9) on the frame (1). Multiple sets of filter plates (7) are movably mounted on the side of the frame (1) away from the locking assembly (2). Each filter plate (7) has a drive unit assembly (3) on the left and right sides of the top of its top. A feed hole (703) is provided in the center of the top of the filter plate (7). The bottom of the filter plate (7) A pipe fitting 2 (702) is provided on the left side corner of the filter plate (7), and a pipe fitting 3 is provided on the bottom right side corner of the filter plate (7). A water inlet 2 (701) is provided below each pipe fitting 2 (702). The drive unit assembly (3) is used to realize the automatic sludge discharge after the filter plate (7) is opened and closed. The locking assembly (2) is used to lock the cylinder seat after the auxiliary hydraulic cylinder (6) reaches the preset position and drives the pressing plate (9) and the cylinder seat to squeeze the filter plate (7) to the rear of the frame (1), and then start the main hydraulic cylinder (201) to squeeze the filter plate (7).

2. A filter press with a distributed filter cloth driving function according to claim 1, characterized in that, The drive unit assembly (3) includes an L-shaped base (306) and a pull plate chain (3052). The drive unit assembly (3) is arranged crosswise on the top of each filter plate (7). The bottom of the L-shaped base (306) is bolted to the top left and right sides of the filter plate (7). A roller (307) is provided in the lower center of the L-shaped base (306). A planetary reducer steering gear (309) is fixedly provided on the top side wall of the L-shaped base (306). A drive shaft (304) is rotatably provided on the planetary reducer steering gear (309). A gear (310) is fixedly provided at the other end of the drive shaft (304). An upper cloth shaft (303) is provided on one end away from the planetary reducer steering gear (309). Both ends of the upper cloth shaft (303) are fixedly connected to one end of the pull plate chain (3052). The pull plate chain (3052) is wound around the drive shaft (304) and the roller (307). The other end of the pull plate chain (3052) is fixedly connected to the bottom of the filter plate (7). A junction box (301) is fixedly provided on the side of the planetary reducer steering gear (309) away from the drive shaft (304). A drag chain (308) is provided at the bottom of the junction box (301). The drag chains (308) are connected in pairs between the junction boxes (301). The upper hanging cloth shaft (303) is used to fix the filter cloth on the upper hanging cloth shaft (303). Under the action of the drive motor (302), the drive shaft (304) rotates and drives the upper hanging cloth shaft (303) to rise or fall, so as to realize the automatic unloading of the filter cloth on the upper hanging cloth shaft (303).

3. A filter press with a distributed filter cloth driving function according to claim 1, characterized in that, Each filter plate (7) is provided with an expansion diaphragm on both the left and right sides. The water inlet chamber of the expansion diaphragm is connected to the pipe fitting three on the rear side of the bottom of the filter plate (7). The connecting pipes on the front and rear sides below each filter plate (7) are connected to pipe fitting two (702) and pipe fitting three respectively. Inlet 2 (701) is used to spray cleaning water onto the filter cloth through the nozzle connected thereto, so as to clean the filter cloth; Pipeline component three is used to convey squeezed water through the expansion diaphragm of the filter plate (7) via the pipeline component three, so that the expansion diaphragm expands and squeezes the filter cake, squeezing out the residual water, and the diaphragm water channel is completely isolated from the slurry channel; Pipe component two (702) is used to compress the solid to form a filter cake, and the filtered liquid is discharged from pipe component two (702); This causes the filter cake to expand and be squeezed, squeezing out residual water, and completely isolating the diaphragm water channel from the slurry channel.

4. A filter press with a distributed filter cloth driving function according to claim 1, characterized in that, A feed main pipe (101) is provided on the rear side plate of the frame (1). A first end valve block (10) is fixedly provided at the bottom rear side of the frame (1). The first end valve block (10) is connected to the auxiliary hydraulic cylinder (6) via a pipeline. Communication power block one (502) and communication power block two (503) are provided on the left and right sides of the top rear side of the frame (1). The first end valve block (10) is electrically connected to communication power block one (502) and communication power block two (503). The first valve block (10) is used to control the synchronous start and extension of the auxiliary hydraulic cylinders (6) on the left and right sides and control the stroke. The feed main pipe (101) is connected to the feed hole (703) at the top of the filter plate (7). The feed main pipe (101) is used to transport slurry to the filter chamber.

5. A filter press with a distributed filter cloth driving function according to claim 1, characterized in that, A chain 1 (305) is provided on the second fixing part (901). The chain 1 (305) passes through the filter plate (7) and is fixedly connected to each filter plate (7). The other end of the chain 1 (305) is fixed to the top of the leftmost filter plate (7). A chain 2 (3051) is provided on the bottom front and back sides of the rightmost filter plate (7). The chain 2 (3051) passes through the filter plate (7) and is fixedly connected to each filter plate (7). The other end of the chain 2 (3051) is fixed to the leftmost filter plate (7). The chain 1 (305) and the chain 2 (3051) have the same length. Chain 1 (305) and chain 2 (3051) are used to separate the filter plate (7) by means of chain 1 (305) and chain 2 (3051) when the auxiliary hydraulic cylinder (6) is started.

6. A filter press with a distributed filter cloth driving function according to claim 1, characterized in that, An end valve block (4) is fixedly installed at the center of the top of the cylinder seat. The end valve block (4) is connected to the main hydraulic cylinder (201) via a pipeline. A communication power connector block three (501) is installed on the right side of the top of the cylinder seat. A communication power connector block four (504) is installed on the top of the front side of the frame (1). A cable drag chain (203) is installed on the left side of the cylinder seat. Part of the cable of the end valve block (4) is electrically connected to the communication power connector block four (504). The hydraulic pipeline of the end valve block (4) passes through the cable drag chain (203) and is connected to the pump station. The hydraulic pipeline of the first end valve block (10) is connected to the pump station via a fixed pipeline. Part of the cable of the end valve block (4) passes through the cable drag chain (203) and is electrically connected to the communication power connector block four (504). The pump station is used to provide power oil to the hydraulic valve block and power the hydraulic cylinder.

7. A filter press with a distributed filter cloth driving function according to claim 1, characterized in that, The rear side of the rack (1) is also equipped with gateway one and gateway two respectively. Gateway one is electrically connected to communication power block one (502) and communication power block two (503). Gateway two is electrically connected to communication power block three (501) and communication power block four (504). The gateway is electrically connected to the external PLC cabinet. The gateway is used to convert the instruction signals of the PLC cabinet into CAN bus protocol instructions. The communication connector is used to transmit the CAN bus protocol instructions to the embedded controllers of the end valve block (4) and the head valve block (10), thereby controlling the start and stop of the main hydraulic cylinder (201) and the auxiliary hydraulic cylinder (6).

8. A filter press with a distributed filter cloth driving function according to claim 2, characterized in that, Gateway 1 is connected to the front row junction box (301) in sequence via cable chain (308), and Gateway 2 is connected to the rear row junction box (301) in sequence via cable chain (308). Gateway 1 and Gateway 2 are used to control the synchronous operation of the drive unit component (3) to unload mud.

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