Filter press forced cake unloading filter cloth and forced cake unloading mechanism

Abstract

The invention belongs to the technical field of filter presses, and discloses a filter press forced cake unloading filter cloth and a forced cake unloading mechanism, the filter press forced cake unloading filter cloth comprises a composite filter cloth, the composite filter cloth comprises a filter layer and a base cloth layer, the filter layer is formed by compounding polytetrafluoroethylene, polyphenylene sulfide and matrix resin, and the base cloth layer is formed by compounding polytetrafluoroethylene, polyphenylene sulfide and matrix resin. The warps of the base cloth layer are formed by twisting polytetrafluoroethylene fibers and zirconium oxide fibers. The polytetrafluoroethylene has corrosion resistance, the polyphenylene sulfide has high temperature resistance, and the zirconium oxide fiber has a synergistic effect of thermal shock resistance, so that the composite filter cloth can stably run for a long time in high-temperature, high-pressure and acid-base environments, the problem that traditional filter cloth is easy to age and damage is solved, and the composite filter cloth optimizes the air permeability and the filtering precision, and has a good application prospect. And the filter cloth has the advantages of corrosion resistance, reduction of filtrate leakage pollution, reduction of waste generation, improvement of the service life, meeting of green production requirements, wide application in the fields of industrial dust removal, chemical filtration, aerospace and the like, and higher adaptability compared with the traditional filter cloth.

Description

Technical Field

[0001] This invention relates to the field of filter press technology, and in particular to a filter press with forced cake discharge filter cloth and a forced cake discharge mechanism. Background Technology

[0002] A filter press is a mechanical device that uses a special filter medium to apply pressure to a material, causing the liquid to seep out. It is a commonly used solid-liquid separation device. It was applied in chemical production in the early 18th century and is still widely used in industries such as chemical, pharmaceutical, metallurgical, dye, food, brewing, ceramics, and environmental protection. The filter plates are stable in performance, easy to operate, safe, and labor-saving; the metal press cylinder is made of seamless steel pipe, and the plastic-coated steel filter plates are precision cast, making them resistant to high temperatures and pressures, and durable.

[0003] Traditional cake discharge filter cloths mostly use single fibers (such as polyester and polypropylene) or simple composite structures, relying on the inherent properties of a single material and lacking targeted design; traditional filter cloths are mainly based on simple weaving and shaping, with rough control of process parameters and lack of chemical modification and precise hot pressing treatment. Summary of the Invention

[0004] To overcome the technical defects of the existing technology, the present invention provides a filter cloth for forced cake discharge in a filter press and a forced cake discharge mechanism.

[0005] The technical solution adopted in this invention is: a filter cloth for forced cake discharge in a filter press, comprising a composite filter cloth, wherein the composite filter cloth comprises a filter layer and a base cloth layer, the filter layer being composed of polytetrafluoroethylene, polyphenylene sulfide and matrix resin, the warp of the base cloth layer being made of polytetrafluoroethylene fiber and zirconium oxide fiber by twisting, and the weft of the base cloth layer being made of polyimide fiber and quartz fiber by twisting.

[0006] Preferably, the polytetrafluoroethylene, polyphenylene sulfide (PPS), and matrix resin are formed by bonding the PPS with the matrix resin.

[0007] Preferably, the forced cake discharge filter cloth is manufactured by a high-temperature hot-pressing process, and the surface of the forced cake discharge filter cloth is treated with an impregnation solution containing SiO2 wear-resistant additives to form a protective layer.

[0008] A process for preparing a filter cloth for forced cake discharge in a filter press, comprising the aforementioned filter cloth for forced cake discharge in a filter press, and further comprising the following preparation steps: Step 1, Raw material pretreatment: Screen the raw materials, including polytetrafluoroethylene, polyphenylene sulfide, matrix resin, polytetrafluoroethylene fiber, zirconium oxide fiber, polyimide fiber and quartz fiber, and clean their surfaces. Step 2, Preparation of the base layer: Polytetrafluoroethylene fiber and zirconium oxide fiber are twisted in a specific ratio to form a composite warp, and polyimide fiber and quartz fiber are twisted in a specific ratio to form a composite weft. The twisted composite warp and composite weft are then woven into the base layer using a weaving process. Step 3, Raw material treatment for filter layer: The raw materials used for filter layer are modified with graphene oxide and chloroalkyl groups are introduced onto the graphene through condensation reaction; polytetrafluoroethylene, polyphenylene sulfide and matrix resin are subjected to methyl methacrylate graft polymerization reaction. Step 4, Filter layer composite: The modified polytetrafluoroethylene and polyphenylene sulfide are thoroughly mixed with the matrix resin in a certain proportion, and the polytetrafluoroethylene and polyphenylene sulfide are bonded together by the matrix resin to form a filter layer. Step 5: Stack the prepared base fabric layer and the composite filter layer according to the structural requirements, place the stacked structure in a hot pressing device, and optimize and control the key process parameters. Step 6, Post-processing: Control the cooling of the hot-pressed composite filter cloth and precisely control the cooling rate; prepare an impregnation solution containing SiO2 wear-resistant additives, and immerse the cooled composite filter cloth in the impregnation solution containing SiO2 wear-resistant additives by optimizing the additive ratio and adjusting the process parameters, remove excess impregnation solution, and allow the impregnation layer to solidify on the surface of the filter cloth to form a wear-resistant protective layer.

[0009] A filter press forced cake discharge mechanism includes the filter press forced cake discharge filter cloth described above. Multiple composite filter cloths are provided, and multiple filter cloth frames are also provided. Multiple composite filter plates are respectively fixed on the filter cloth frames. The filter cloth frames are provided with a high-pressure rinsing and cleaning component for rinsing and cleaning the material on the composite filter plates. The high-pressure flushing cleaning assembly includes a mounting plate and a connecting plate at the top of the filter cloth frame. The mounting plates and connecting plates at each end are staggered. A rotating shaft is located between the mounting plates and connecting plates, with drive guide gears at both ends. A servo motor for driving the rotating shaft is mounted on the mounting plate. Fixed connecting pipes are located at the top and bottom of the filter cloth frame. One end of the composite filter cloth is fixedly connected to the lower fixed connecting pipe, and after passing over the upper fixed connecting pipe, it is fixedly connected to the lower fixed connecting pipe of the adjacent filter cloth frame. A rotary encoder is mounted on one of the rotating shafts. A horizontal connecting plate is located at the bottom of the filter cloth frame, and an S-shaped guide connecting plate is located at the outer end of the horizontal connecting plate. A water spray pipe is located between the bottom ends of two guide connecting plates, and multiple nozzles facing the composite filter plate are connected to the water spray pipe, with the nozzles staggered. A tension chain is meshed with the drive guide gears. A guide wheel for guiding the tension chain is located on one side of the filter cloth frame. Both ends of the tension chain are fixedly connected to two fixed connecting pipes. Preferably, the top side of the filter cloth frame is provided with an L-shaped mounting plate, on which an encoder induction switch electrically connected to the rotary encoder is mounted, and a detection bracket protection through-beam switch assembly is mounted on the mounting plate.

[0010] Preferably, a first guide rod and a second guide rod are respectively provided at the two corners between the two guide plates. The composite filter cloth on the filter cloth frame is guided by the first guide rod, and the composite filter cloth on the adjacent filter cloth frame is guided by the second guide rod.

[0011] Preferably, the top of the filter cloth frame is provided with a fixing plate, and the fixing plate is provided with a limiting rod.

[0012] Preferably, it also includes a first support plate and a second support plate vertically upward on both sides of the plurality of filter cloth frames. The top of the first support plate is equipped with a high-position protection through-beam switch assembly, and the top of the second support plate is equipped with a low-position protection through-beam switch assembly. The height of the first support plate is higher than the height of the second support plate.

[0013] Preferably, the filter cloth frame is provided with guide slides symmetrically on both sides.

[0014] The beneficial effects of this invention are: 1. By employing a composite filter layer and a base fabric layer, the filter layer utilizes the synergistic effect of polytetrafluoroethylene (PTFE), polyphenylene sulfide (PPS), and matrix resin. The warp and weft threads of the base fabric layer are treated with twisting technology, achieving directional reinforcement of material properties. PTFE provides corrosion resistance, PPS provides high temperature resistance, and zirconium oxide fiber provides thermal shock resistance. This synergistic effect allows for long-term stable operation under high temperature, high pressure, and acid / alkali environments, solving the problems of easy aging and damage of traditional filter cloths. The composite filter cloth optimizes air permeability and filtration accuracy, reduces filtrate leakage and pollution due to corrosion resistance, reduces waste generation, and improves service life, meeting green production requirements. It is widely used in industrial dust removal, chemical filtration, aerospace, and other high-end fields, and has higher adaptability compared to traditional filter cloths. 2. By modifying the raw materials used in the filter layer with graphene oxide, chloroalkyl groups are introduced onto the fireworks graphene through a condensation reaction; methyl methacrylate graft polymerization is carried out on polytetrafluoroethylene, polyphenylene sulfide and matrix resin, and the material performance is improved through the whole process optimization. 3. The base fabric layer enhances fiber bonding through twisting technology. Combined with impregnation with SiO2 abrasion-resistant additives, the abrasion resistance of the filter cloth is improved. Compared with traditional filter cloth, the tensile strength is increased, making it suitable for high-intensity working conditions. The forced cake discharge filter cloth is made through a high-temperature hot-pressing process. During the hot-pressing process, the particle distribution is controlled to be uniform, reducing performance fluctuations and improving filtration efficiency under complex working conditions. The synergistic effect of various materials and the design of the protective layer extend the service life of the composite filter cloth, reduce the replacement frequency, reduce downtime losses and labor costs, and improve economic benefits. 4. The output shaft of the servo motor drives the rotating shaft to rotate, and the rotating shaft drives the two drive guide gears to rotate. The drive guide gears mesh with the tension chain, so that the tension chain is driven. The tension chain pulls the fixed connecting tube to move, so that the composite filter cloth moves under the guidance of the first guide rod and the second guide rod. At the same time, the nozzle starts to spray water to wash and clean the material on the composite filter cloth. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0016] Figure 1 This is a schematic diagram of a filter cloth structure for forced cake discharge in a filter press according to the present invention; Figure 2 This is a process flow diagram of the preparation process of a filter cloth for forced cake discharge in a filter press according to the present invention; Figure 3 This is a schematic diagram of a forced cake unloading mechanism for a filter press according to the present invention; Figure 4 This is a side view of a forced cake unloading mechanism for a filter press according to the present invention. Figure 5 This is a schematic diagram of the main structure of a forced cake unloading mechanism for a filter press according to the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Composite filter cloth; 2. Filter layer; 3. Base cloth layer; 4. Protective layer; 5. Filter cloth frame; 6. High-pressure rinsing and cleaning assembly; 7. Mounting support plate; 8. Connecting plate; 9. Rotating shaft; 10. Drive guide gear; 11. Servo motor; 12. Fixed connecting pipe; 13. Rotary encoder; 14. Horizontal connecting plate; 15. Guide connecting plate; 16. Water spray pipe; 17. Spray head; 18. Mounting connecting plate; 19. Encoder induction switch; 20. Detection bracket protection photoelectric switch assembly; 21. First guide link; 22. Second guide link; 23. Fixed connecting plate; 24. Limiting rod; 25. First support connecting plate; 26. Second support connecting plate; 27. High-position protection photoelectric switch assembly; 28. Low-position protection photoelectric switch assembly; 29. ​​Guide slide; 30. Tension chain; 31. Guide wheel. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0019] like Figure 1 As shown, this embodiment provides a filter cloth for forced cake discharge in a filter press, including a composite filter cloth 1. The composite filter cloth 1 includes a filter layer 2 and a base cloth layer 3. The filter layer 2 is composed of polytetrafluoroethylene, polyphenylene sulfide, and a matrix resin. The warp of the base cloth layer 3 is made of polytetrafluoroethylene fiber and zirconium oxide fiber through twisting, and the weft of the base cloth layer 3 is made of polyimide fiber and quartz fiber through twisting. By using the composite of filter layer 2 and base cloth layer 3, the filter layer 2 utilizes the synergistic effect of polytetrafluoroethylene, polyphenylene sulfide, and matrix resin, while the warp and weft of the base cloth layer 3 are made using twisting technology. Through processing, the material properties can be directionally strengthened. Polytetrafluoroethylene (PTFE) has corrosion resistance, polyphenylene sulfide (PPS) has high temperature resistance, and zirconia fiber has thermal shock resistance. The synergistic effect allows it to operate stably for a long time under high temperature, high pressure, and acid and alkali environments, solving the problem of easy aging and damage of traditional filter cloths. Composite filter cloth 1 optimizes air permeability and filtration accuracy, reduces filtrate leakage and pollution due to corrosion resistance, reduces waste generation, and improves service life. It meets the requirements of green production and is widely used in industrial dust removal, chemical filtration, aerospace and other high-end fields. Compared with traditional filter cloths, it has higher adaptability.

[0020] The polytetrafluoroethylene, polyphenylene sulfide, and matrix resin are bonded together by the matrix resin.

[0021] The forced cake discharge filter cloth is manufactured through a high-temperature hot-pressing process. The surface of the filter cloth is treated with an impregnation solution containing SiO2 abrasion-resistant additives to form a protective layer 4. The base fabric layer 3 is enhanced by twisting technology to strengthen fiber bonding. Combined with the impregnation solution treatment containing SiO2 abrasion-resistant additives, the abrasion resistance of the filter cloth is improved. Compared to traditional filter cloths, its tensile strength is increased, making it suitable for high-intensity working conditions. The forced cake discharge filter cloth is manufactured through a high-temperature hot-pressing process, which controls the uniform distribution of particles during hot pressing, reducing performance fluctuations and improving filtration efficiency under complex working conditions. The synergistic effect of various materials and the design of the protective layer extend the service life of the composite filter cloth 1, reduce replacement frequency, lower downtime losses and labor costs, and improve economic benefits.

[0022] like Figure 2 As shown, a process for preparing a filter cloth for forced cake discharge in a filter press includes the aforementioned filter cloth for forced cake discharge in a filter press, and further includes the following preparation steps: Step 1, Raw material pretreatment: Screen the raw materials, including polytetrafluoroethylene, polyphenylene sulfide, matrix resin, polytetrafluoroethylene fiber, zirconium oxide fiber, polyimide fiber and quartz fiber, and clean their surfaces. Step 2, Preparation of base layer 3: Polytetrafluoroethylene fiber and zirconium oxide fiber are twisted in a specific ratio to form composite warp, and polyimide fiber and quartz fiber are twisted in a specific ratio to form composite weft. The twisted composite warp and composite weft are then woven into base layer 3 using a weaving process. Step 3, Raw material treatment for filter layer 2: The raw materials used for filter layer 2 are modified with graphene oxide and chloroalkyl groups are introduced onto the graphene through a condensation reaction; polytetrafluoroethylene, polyphenylene sulfide and matrix resin are subjected to methyl methacrylate graft polymerization reaction. Step 4, Composite Filter Layer 2: The modified polytetrafluoroethylene, polyphenylene sulfide and matrix resin are thoroughly mixed in proportion, and the polytetrafluoroethylene and polyphenylene sulfide are bonded together by the matrix resin to form filter layer 2. Step 5: Stack the prepared base fabric layer 3 and the composite filter layer 2 according to the structural requirements, place the stacked structure in a hot pressing device, and optimize and control the key process parameters. Step 6, Post-processing: Control the cooling of the hot-pressed composite filter cloth and precisely control the cooling rate; prepare an impregnation solution containing SiO2 wear-resistant additives, and immerse the cooled composite filter cloth in the impregnation solution containing SiO2 wear-resistant additives by optimizing the additive ratio and adjusting the process parameters, remove excess impregnation solution, and allow the impregnation layer to solidify on the surface of the filter cloth to form a wear-resistant protective layer 4. By modifying the raw materials used for filter layer 2 with graphene oxide, chloroalkyl groups are introduced onto the fireworks graphene through a condensation reaction; and methyl methacrylate is grafted onto polytetrafluoroethylene, polyphenylene sulfide, and matrix resin to optimize and improve the material performance throughout the entire process.

[0023] like Figure 3 , Figure 4 box Figure 5 As shown, a forced cake discharge mechanism for a filter press includes the aforementioned forced cake discharge filter cloth. Multiple composite filter cloths 1 are provided, along with multiple filter cloth frames 5. Multiple composite filter plates 1 are respectively fixed on the filter cloth frames 5. The filter cloth frames 5 are equipped with a high-pressure rinsing and cleaning assembly 6 for rinsing and cleaning the material on the composite filter plates 1. The high-pressure rinsing and cleaning assembly 6 includes a mounting plate 7 and a connecting plate 8 at the top of the filter cloth frame 5. The mounting plate 7 and connecting plate 8 at each end are staggered. A rotating shaft 9 is provided between the mounting plate 7 and the connecting plate 8. Both ends of the rotating shaft 9 are equipped with drive guide gears 10. A servo motor 11 for driving the rotating shaft 9 is mounted on the mounting plate 7. Fixed connecting pipes 12 are provided at the top and bottom of the filter cloth frame 5. One end of the composite filter cloth 1 is fixedly connected to the lower fixed connecting pipe 12. After passing over the upper fixed connecting pipe 12, the composite filter cloth 1 is fixedly connected to the lower fixed connecting pipe 12 of the adjacent filter cloth frame 5. A rotary encoder 1 is mounted on one of the rotating shafts 2. 3. The bottom end of the filter cloth frame 5 is provided with a horizontal connecting plate 14, and the outer end of the horizontal connecting plate 14 is provided with an S-shaped guide connecting plate 15. A water spray pipe 16 is provided between the bottom ends of the two guide connecting plates 15. Multiple nozzles 17 facing the composite filter plate 1 are connected to the water spray pipe 16, and the multiple nozzles 17 are arranged in a crisscross pattern. A tension chain 30 is meshed with the drive guide gear 10. One side of the filter cloth frame 5 is provided with a guide wheel 31 that guides the tension chain 30. The two ends of the tension chain 30 are respectively fixedly connected to two fixed connecting pipes 12. The output shaft of the servo motor 11 drives the rotating shaft 9 to rotate. The rotating shaft 9 drives the two drive guide gears 10 to rotate. The drive guide gears 10 mesh with the tension chain 30, so that the tension chain 30 is driven. The tension chain 30 pulls the fixed connecting pipe 12 to move, so that the composite filter cloth 1 can move under the guidance of the first guide connecting rod 21 and the second guide connecting rod 22. At the same time, the nozzles 17 start spraying water to wash and clean the material on the composite filter cloth 1.

[0024] The filter cloth frame 5 has an L-shaped mounting plate 18 on one side of its top. An encoder induction switch 19 electrically connected to the rotary encoder 13 is mounted on the mounting plate 18. A detection bracket protection through-beam switch assembly 20 is also mounted on the mounting plate 18. The filter cloth frame 5 also includes a first support plate 25 and a second support plate 26 vertically arranged on both sides of the filter cloth frame 5. A high-position protection through-beam switch assembly 27 is mounted on the top of the first support plate 25, and a low-position protection through-beam switch assembly 28 is mounted on the top of the second support plate 26. The height of the first support plate 25 is higher than that of the second support plate 26. The high-position protection through-beam switch assembly 27, the low-position protection through-beam switch assembly 28, and the detection bracket protection through-beam switch assembly 20 can protect the limit position of the limit rod 24. When the high-position protection through-beam switch assembly 27, the low-position protection through-beam switch assembly 28, and the detection bracket protection through-beam switch assembly 20 alarm, a warning signal is issued to facilitate timely maintenance and reset.

[0025] A first guide rod 21 and a second guide rod 22 are respectively provided at the two corners between the two guide plates 15. The composite filter cloth 1 on the filter cloth frame 5 is guided by the first guide rod 21, and the composite filter cloth 1 on the adjacent filter cloth frame 5 is guided by the second guide rod 22.

[0026] The top of the filter cloth frame 5 is provided with a fixed connecting plate 23, and a limiting rod 24 is provided on the fixed connecting plate 23. When the upper fixed connecting pipe 12 contacts the limiting rod 24, the servo motor 11 is turned off after a delay of 3 seconds, forcibly resetting all composite filter plates 1.

[0027] The filter cloth frame 5 is provided with guide slides 29 symmetrically on both sides.

[0028] During operation, the output shaft of the servo motor 11 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the two drive guide gears 10 to rotate. The drive guide gears 10 mesh with the tension chain 30, so that the tension chain 30 is driven. The tension chain 30 pulls the fixed connecting pipe 12 to move, so that the composite filter cloth 1 moves under the guidance of the first guide rod 21 and the second guide rod 22. At the same time, the nozzle 17 starts to spray water to wash and clean the material on the composite filter cloth 1.

[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0030] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A filter cloth for forced cake discharge in a filter press, comprising a composite filter cloth (1), characterized in that: The composite filter cloth (1) includes a filter layer (2) and a base cloth layer (3). The filter layer (2) is composed of polytetrafluoroethylene, polyphenylene sulfide and matrix resin. The warp of the base cloth layer (3) is made of polytetrafluoroethylene fiber and zirconium oxide fiber by twisting. The weft of the base cloth layer (3) is made of polyimide fiber and quartz fiber by twisting.

2. The filter cloth for forced cake discharge in a filter press according to claim 1, characterized in that: The polytetrafluoroethylene, polyphenylene sulfide, and matrix resin are bonded together by the matrix resin.

3. The filter cloth for forced cake discharge in a filter press according to claim 1, characterized in that: The forced cake discharge filter cloth is made by high temperature hot pressing process, and the surface of the forced cake discharge filter cloth is treated with impregnation liquid containing SiO2 wear-resistant additive to form a protective layer (4).

4. A process for preparing a filter cloth for forced cake discharge in a filter press, comprising the filter cloth for forced cake discharge in a filter press as described in any one of claims 1-3, characterized in that: It also includes the following preparation steps: Step 1, Raw material pretreatment: Screen the raw materials, including polytetrafluoroethylene, polyphenylene sulfide, matrix resin, polytetrafluoroethylene fiber, zirconium oxide fiber, polyimide fiber and quartz fiber, and clean their surfaces. Step 2, Preparation of base layer (3): Polytetrafluoroethylene fiber and zirconium oxide fiber are twisted in a specific ratio to form composite warp, and polyimide fiber and quartz fiber are twisted in a specific ratio to form composite weft. The twisted composite warp and composite weft are woven into the base layer (3) through a weaving process. Step 3, Raw material treatment of filter layer (2): The raw materials used for filter layer (2) are modified with graphene oxide and chloroalkyl groups are introduced on the graphene through condensation reaction; methyl methacrylate graft polymerization reaction is carried out on polytetrafluoroethylene, polyphenylene sulfide and matrix resin. Step 4, Filter layer (2) composite: The modified polytetrafluoroethylene, polyphenylene sulfide and matrix resin are fully mixed in proportion, and the polytetrafluoroethylene and polyphenylene sulfide are bonded together by the matrix resin to form filter layer (2). Step 5: Stack the prepared base fabric layer (3) and the composite filter layer (2) according to the structural requirements, place the stacked structure in a hot pressing device, and optimize and control the key process parameters; Step 6, Post-processing: Control the cooling of the hot-pressed composite filter cloth and precisely control the cooling rate; prepare an impregnation solution containing SiO2 wear-resistant additives, and immerse the cooled composite filter cloth in the impregnation solution containing SiO2 wear-resistant additives by optimizing the additive ratio and adjusting the process parameters, remove excess impregnation solution, and allow the impregnation layer to solidify on the surface of the filter cloth to form a wear-resistant protective layer (4).

5. A filter press forced cake discharge mechanism, comprising a filter press forced cake discharge filter cloth as described in any one of claims 1-3, wherein the composite filter cloth (1) is provided in multiple forms, characterized in that: It also includes multiple filter cloth frames (5), and multiple composite filter plates (1) are respectively fixed on the filter cloth frames (5). The filter cloth frames (5) are provided with a high-pressure rinsing and cleaning assembly (6) for rinsing and cleaning the material on the composite filter plates (1). The high-pressure flushing cleaning assembly (6) includes a mounting plate (7) and a connecting plate (8) at the top of the filter cloth frame (5). The mounting plate (7) and the connecting plate (8) at each end are distributed at a cross interval. A rotating shaft (9) is provided between the mounting plate (7) and the connecting plate (8). Both ends of the rotating shaft (9) are provided with drive guide gears (10). A servo motor (11) for driving the rotating shaft (9) is installed on the mounting plate (7). Fixed connecting pipes (12) are provided at the top and bottom of the filter cloth frame (5). One end of the composite filter cloth (1) is fixedly connected to the fixed connecting pipe (12) below. After the composite filter cloth (1) passes around the fixed connecting pipe (12) above, it connects to the fixed connecting pipe below the adjacent filter cloth frame (5). 12) Fixed connection, a rotary encoder (13) is installed on one of the rotating shafts (2), a horizontal connecting plate (14) is provided at the bottom of the filter cloth frame (5), an S-shaped guide connecting plate (15) is provided at the outer end of the horizontal connecting plate (14), a water spray pipe (16) is provided between the bottom ends of the two guide connecting plates (15), a plurality of nozzles (17) facing the composite filter plate (1) are connected to the water spray pipe (16), and the plurality of nozzles (17) are arranged in a crisscross pattern, a tension chain (30) is meshed on the drive guide gear (10), a guide wheel (31) is provided on one side of the filter cloth frame (5) to guide the tension chain (30), and the two ends of the tension chain (30) are fixedly connected to two fixed connecting pipes (12) respectively.

6. The forced cake discharge mechanism for a filter press according to claim 5, characterized in that: The filter cloth frame (5) has an L-shaped mounting plate (18) on one side of its top end. An encoder induction switch (19) electrically connected to the rotary encoder (13) is mounted on the mounting plate (18). A detection bracket protection through-beam switch assembly (20) is also mounted on the mounting plate (18).

7. A forced cake discharge mechanism for a filter press according to claim 5, characterized in that: At the two corners between the two guide plates (15), a first guide rod (21) and a second guide rod (22) are respectively provided. The composite filter cloth (1) on the filter cloth frame (5) is guided by the first guide rod (21), and the composite filter cloth (1) on the adjacent filter cloth frame (5) is guided by the second guide rod (22).

8. A forced cake discharge mechanism for a filter press according to claim 5, characterized in that: The filter cloth frame (5) is provided with a fixed connecting plate (23) at the top, and a limiting rod (24) is provided on the fixed connecting plate (23).

9. A forced cake discharge mechanism for a filter press according to claim 5, characterized in that: It also includes a first support plate (25) and a second support plate (26) that are vertically upward on both sides of the multiple filter cloth frames (5). The top of the first support plate (25) is equipped with a high-position protection through-beam switch assembly (27), and the top of the second support plate (26) is equipped with a low-position protection through-beam switch assembly (28). The height of the first support plate (25) is higher than the height of the second support plate (26).

10. A forced cake discharge mechanism for a filter press according to claim 5, characterized in that: The filter cloth frame (5) is provided with guide slides (29) on both sides.

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