Leak-proof plate-and-frame filter press

Abstract

The invention discloses a leakproof plate-and-frame filter press, which belongs to the technical field of separation, and comprises a main body assembly, the main body assembly is provided with filter plate assemblies arranged in sequence, two sides of the main body assembly far away from each other are provided with dual-purpose assemblies, the filter plate assemblies are pulled open in sequence through the dual-purpose assemblies for deslagging, and the filter plate assemblies are provided with dehydration assemblies. The dewatering assembly is driven by the dual-purpose assembly to extrude a mud cake so as to reduce the water content of the mud cake, the sealing assemblies are arranged on the two sides, away from each other, of the filter plate assembly and used for preventing sewage from leaking, the sealing performance of the sealing assemblies can be improved by means of the pressure of the sewage, and the dual-purpose assembly and the dewatering assembly are matched so that the water content of the mud cake can be reduced. The sealing performance of the sealing assembly is further improved. Therefore, the sealing device has good sealing performance, the sealing gasket does not need to be replaced frequently, and active dehydration and automatic deslagging can be carried out.

Description

Technical Field

[0001] This invention relates to a leak-proof plate and frame filter press, belonging to the field of separation technology. Background Art

[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 and is widely used in industries such as chemical, pharmaceutical, metallurgical, dye, food, brewing, ceramics and environmental protection. Filter plates have the advantages of stable performance, convenient operation, safety and labor saving.

[0003] Existing filter presses consist of a set of filter chambers composed of alternately arranged filter plates and filter frames. The plates and frames are sealed with filter cloth or gaskets. The filter cloth sealing method is prone to leakage and has poor sealing performance. The gasket sealing method is prone to problems due to gasket aging, which can cause the two gaskets to not stick together tightly. Therefore, the gaskets need to be replaced frequently, causing inconvenience in use. Summary of the Invention

[0004] The purpose of this invention is to provide a leak-proof plate and frame filter press to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Compared to existing technologies, this invention provides a leak-proof plate and frame filter press, comprising a main body assembly, on which filter plate assemblies are arranged sequentially. Dual-purpose components are located on opposite sides of the main body assembly, allowing for slag discharge by sequentially pulling apart the filter plate assemblies using the dual-purpose components. Each filter plate assembly has a dewatering component, which, driven by the dual-purpose components, squeezes the sludge cake to reduce its moisture content. Sealing components are located on opposite sides of the filter plate assemblies to prevent wastewater leakage. These sealing components utilize the pressure of the wastewater to improve their sealing performance. The combined effect of the dual-purpose components and the dewatering components further enhances the sealing performance of the sealing components. The sealing assembly includes an airbag sealing ring and a main airbag for inflating the airbag sealing ring. The pressure of the sewage can compress the main airbag to inflate the airbag sealing ring, thereby improving the sealing performance of the airbag sealing ring. The sealing assembly also includes an auxiliary airbag for inflating the airbag sealing ring. When the dewatering assembly squeezes the mud cake, it can squeeze the auxiliary airbag to inflate the airbag sealing ring, thereby further improving the sealing performance of the sealing assembly.

[0006] Furthermore, the main component includes a frame, a thrust plate, and two crossbeams. The frame is fixed between the two crossbeams, and the thrust plate is fixed between the two crossbeams. A feed hole is provided on one side of the thrust plate, and a water inlet pipe is fixedly provided inside the feed hole. Two mounting holes are provided on one side of the frame, and a hydraulic cylinder is fixedly provided inside the mounting holes. A clamping plate is provided between the two crossbeams, and the clamping plate is slidably connected to the upper side of the crossbeam. The shaft end of the hydraulic cylinder is fixed to one side of the clamping plate. Auxiliary sliding arms are fixed on the two opposite sides of the clamping plate, and a downward pressure guide plate is fixedly provided on the lower side of the auxiliary sliding arms.

[0007] Furthermore, the filter plate assembly includes a filter frame, a connecting pipe, and double-sided filter cloth. Two filter plates are fixedly mounted on the inner side of the filter frame. Each filter plate has a pipe hole on one side. The connecting pipe is fixed inside the pipe hole. The filter plate has several filter holes. The filter plate is located inside the double-sided filter cloth. The double-sided filter cloth is located inside the connecting pipe. Frame-shaped slots are provided on the two opposite sides of the filter frame. The double-sided filter cloth is disassembled and snapped into the inner side of the frame-shaped slots. An inner pressure cloth ring and an outer pressure cloth ring are detachably connected to the inner side of the connecting pipe. The inner pressure cloth ring is detachably connected to the inner side of the outer pressure cloth ring by a thread. Supporting sliding arms are fixedly mounted on the two opposite sides of the filter frame. The lower side of the supporting sliding arm and the auxiliary sliding arm is provided with a receiving groove. A roller is rotatably mounted inside the receiving groove. The roller contacts the upper side of the crossbeam. A drain hole is provided on one side of the filter frame.

[0008] Furthermore, the dual-purpose component includes a chain and two sprockets. The sprockets are connected to the inner side of the chain. A rotating shaft is fixedly mounted on the inner side of the chain. One end of the rotating shaft rotates on one side of a crossbeam. Two protective covers are fixedly mounted on one side of the crossbeam. A motor is fixedly mounted on the inner wall of one of the protective covers. The motor is connected to an external power source and switch via wires. The shaft end of the motor is connected to the outer circumference of one rotating shaft via a bevel gear transmission. A C-shaped long tube and a square tube are provided on one side of the crossbeam. The chain is located inside the C-shaped long tube and the square tube. The C-shaped long tube and the crossbeam... Several L-shaped frames are fixed between the beams, and several connecting frames are fixed between the square tube and the crossbeam. A C-shaped sleeve is slidably fitted on the outer periphery of the C-shaped long tube. A connecting strip is fixed on the inner wall of the C-shaped sleeve. The connecting strip is fixed to the lower side of the top of the chain. A movable seat is fixed on the upper side of the C-shaped sleeve. An arc-shaped claw and a beveled claw are rotatably provided on the upper side of the movable seat. A first torsion spring is fixed between the arc-shaped claw and the movable seat. A second torsion spring is fixed between the beveled claw and the movable seat. A drive groove is provided on one side of the movable seat. An anti-collision control component is provided on one side of the beveled claw.

[0009] Furthermore, the anti-collision control component includes a hollow seat, which is fixed on one side of the movable seat. An electric telescopic push rod is fixedly provided on the inner side of the hollow seat. A wedge block is fixedly provided at the shaft end of the electric telescopic push rod. The wedge block is slidably connected to the movable seat and is in contact with the inclined claw.

[0010] Furthermore, the dehydration assembly includes a lifting frame, with the filter frame sliding inside the lifting frame. Receiving holes are provided on opposite sides of the lifting frame, and the supporting sliding arm is located inside the receiving holes. Drive shafts are rotatably mounted on opposite sides of the lifting frame, and these drive shafts are matched with drive grooves. A mesh frame groove is provided on the opposite side of the two filter plates, and a compression mesh frame is slidably and detachably mounted within the mesh frame groove. Several guide rods are fixed on the opposite side of the two compression mesh frames, and several guide holes are provided on one side of each filter plate, communicating with the mesh frame groove. The guide rod slides inside the guide hole. Several beveled strips are provided between the two filter plates. The end of the guide rod away from the extrusion mesh frame is fixed to the beveled strip. Two lifting plates are fixedly provided on the lower top side of the lifting frame. Two square holes are provided on the upper side of the filter frame. A square rubber ring is fixedly provided inside the square hole. The lifting plate slides inside the square rubber ring. Several guide sleeves are slidably sleeved on the outer periphery of the lifting plate. The guide sleeves are fixed between the two filter plates. Several beveled blocks are fixed on the two opposite sides of the lifting plate. The beveled blocks match the beveled strips.

[0011] Furthermore, the sealing assembly also includes an upper connecting pipe and a lower connecting pipe. A frame-shaped groove is provided on one side of the filter frame, and a frame-shaped sealing ring is fixedly provided inside the frame-shaped groove. The airbag sealing ring is fixed inside the frame-shaped groove. The auxiliary airbag is fixed on the upper side of the filter frame and on the lower top side of the lifting frame. The main airbag is fixed on the inner side of the filter frame and on one side of the filter plate. Through holes are provided on the lower side of the auxiliary airbag, the upper side of the filter frame, and the upper side of the airbag sealing ring. The upper connecting pipe is fixed inside the through holes. Through holes are provided on the lower side of the airbag sealing ring, the lower top side of the filter frame, and the upper side of the main airbag. The lower connecting pipe is fixed inside the through holes.

[0012] Furthermore, several pull ropes are fixedly provided on the inner side of the auxiliary airbag.

[0013] Furthermore, the clamping plate and the thrust plate are each provided with a sealing groove on the side that is close to each other. The sealing groove has a frame-shaped structure, and a sealing gasket is fixedly provided on the inner side of the sealing groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By setting up a main component, a filter plate component, a sealing component, a dual-purpose component, and a dewatering component, the present invention has the functions of dual sealing, adaptive sealing, and long-term sealing, which makes the present invention have good sealing performance and does not require frequent replacement of sealing gaskets, making it easy to use.

[0015] (2) By setting up a filter plate assembly, a dual-purpose assembly, and a dewatering assembly, the present invention has the functions of active dewatering and automatic slag discharge. It can automatically squeeze the mud cake between the two filter plate assemblies, thereby reducing the moisture content of the mud cake and making it easier to recycle the mud cake. It can also pull the filter plate assemblies apart sequentially to discharge slag. Moreover, when the filter plate assemblies are pulled apart to discharge slag, the dual-purpose assembly will drive the dewatering assembly to push out the mud cake, so that the mud cake does not need to be manually scraped off, making it convenient to use.

[0016] (3) By setting up a dual-purpose component, the present invention has a shared drive function, which can automatically discharge slag by sequentially pulling open the filter plate assembly through the dual-purpose component, and can also drive the dewatering assembly for active dewatering through the dual-purpose component, thereby reducing the number of drive components and thus reducing the failure rate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a frontal perspective view of the present invention; Figure 2 The invention proposed Figure 1 A magnified schematic diagram of a portion of area A in the middle; Figure 3 This is a three-dimensional structural diagram of the back of the present invention; Figure 4 The invention proposed Figure 3 A magnified schematic diagram of a portion of region B in the middle section; Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention with partial side cross-section; Figure 6 This is a partial three-dimensional structural diagram of the front of the present invention; Figure 7 The invention proposed Figure 6 A magnified schematic diagram of a portion of region C; Figure 8 This is a schematic diagram of a partial cross-sectional view of the side of the present invention; Figure 9This is a schematic diagram of the isometric structure with partial side section of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the back part of the present invention; Figure 11 This is a schematic diagram of the side cross-section structure of the present invention; Figure 12 This is a partial three-dimensional structural diagram of the side view of the present invention; Figure 13 This is a partial frontal cross-sectional perspective view of the present invention; Figure 14 The invention proposed Figure 13 A magnified schematic diagram of a portion of region D in the middle; Figure 15 This is a partial frontal cross-sectional isometric structural diagram of the present invention; Figure 16 The invention proposed Figure 15 A magnified schematic diagram of a portion of region E in the middle; Figure 17 The invention proposed Figure 15 A magnified schematic diagram of a portion of the F region; Figure 18 This is a partial frontal sectional perspective view of the present invention; Figure 19 The invention proposed Figure 18 A magnified schematic diagram of a portion of the G region; Figure 20 This is a partial side exploded three-dimensional structural diagram of the present invention.

[0019] In the diagram: 1. Airbag sealing ring; 2. Auxiliary airbag; 3. Main airbag; 4. Frame; 5. Thrust plate; 6. Crossbeam; 7. Water inlet pipe; 8. Hydraulic cylinder; 9. Pressing plate; 10. Auxiliary sliding arm; 11. Lower pressure guide plate; 12. Filter frame; 13. Connecting pipe; 14. Filter plate; 15. Filter hole; 16. Double-sided filter cloth; 17. Inner pressure cloth ring; 18. Outer pressure cloth ring; 19. Support sliding arm; 20. Roller; 21. Drain hole; 22. Chain; 23. Sprocket; 24. Rotating shaft; 25. Protective cover; 26. Motor; 27. C-type 28. Long tube; 29. ​​Square tube; 30. L-shaped frame; 31. Connecting frame; 32. C-shaped sleeve; 33. Connecting strip; 34. Moving seat; 35. Arc edge claw; 36. Beveled edge claw; 37. Hollow seat; 38. Electric telescopic push rod; 39. Wedge block; 40. Drive groove; 41. Lifting frame; 42. Drive shaft; 43. Extruded mesh frame; 44. Guide rod; 45. Beveled strip; 46. Lifting plate; 47. Guide sleeve; 48. Beveled block; 49. Upper connecting pipe; 50. Lower connecting pipe; 51. Frame-type sealing ring; 52. Pull rope; 53. Sealing gasket. Detailed Implementation

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Please see Figure 1-20 The present invention provides a technical solution: A leak-proof plate and frame filter press includes a main assembly comprising a frame 4, a thrust plate 5, and two crossbeams 6. The frame 4 is fixed between the two crossbeams 6, and the thrust plate 5 is also fixed between the two crossbeams 6. Reinforcing legs are fixed to the lower side of each crossbeam 6. A feed hole is provided on one side of the thrust plate 5, and a water inlet pipe 7 is fixed inside the feed hole. During filtration, high-pressure wastewater to be filtered needs to be supplied into the water inlet pipe 7. Two mounting holes are provided on one side of the frame 4, and hydraulic cylinders 8 are fixed inside the mounting holes. Solenoid valves are connected to the hydraulic cylinders 8 via oil pipes. A clamping plate 9 is provided between the two crossbeams 6. Sealing grooves are provided on the sides of the clamping plate 9 and the thrust plate 5 that are close to each other. The structure is frame-type. A sealing gasket 52 is fixedly installed on the inner side of the sealing groove. The pressing plate 9 is slidably connected to the upper side of the crossbeam 6. Specifically, L-shaped sliding arms are fixedly installed on the two opposite sides of the pressing plate 9. The L-shaped sliding arms are slidably connected to the upper side of the crossbeam 6. The shaft end of the oil cylinder 8 is fixed on one side of the pressing plate 9. During use, before the filter plate assembly needs to be pressed for filtration and separation, the oil cylinder 8 needs to be extended. The extension of the oil cylinder 8 will drive the pressing plate 9 to move horizontally, so that the pressing plate 9 can press multiple filter plate assemblies. When it is necessary to discharge slag, the oil cylinder 8 needs to be retracted first, so that the pressing plate 9 is away from the filter plate assembly. Auxiliary sliding arms 10 are fixedly installed on the two opposite sides of the pressing plate 9.

[0022] In order to separate solid impurities from wastewater, such as Figure 1 , Figure 8 , Figure 12 - Figure 20As shown, the main component has filter plate assemblies arranged in sequence. Each filter plate assembly includes a filter frame 12, a connecting pipe 13, and double-sided filter cloth 16. Two filter plates 14 are fixedly mounted inside the filter frame 12. One side of each filter plate 14 has a pipe hole, and the connecting pipe 13 is fixed inside the pipe hole. Each filter plate 14 has several filter holes 15. The filter plates 14 are located inside the double-sided filter cloth 16, which is located inside the connecting pipe 13. Frame-shaped slots are provided on the two opposite sides of the filter frame 12. The double-sided filter cloth 16 is detachably snapped into the inner side of these slots. An inner pressure cloth ring 17 and an outer pressure cloth ring 18 are detachably connected to the inner side of the connecting pipe 13. The inner pressure cloth ring 17 is detachably connected to the inner side of the outer pressure cloth ring 18 via threads. The inner and outer pressure cloth rings 17 and 18 can fix the double-sided filter cloth 16, preventing it from loosening during use. A drain is provided on one side of the filter frame 12. During filtration and separation, a filtration chamber is formed between the two filter frames 12 via the water hole 21. Specifically, a filtration chamber is formed between the two double-sided filter cloths 16. Wastewater discharged from the inlet pipe 7 enters between the two filter frames 12. The water passes through the double-sided filter cloths 16 and the filter holes 15 into the space between the two filter plates 14, and then is discharged through the drain hole 21. Solid impurities are blocked by the double-sided filter cloths 16, so solid impurities accumulate between the two double-sided filter cloths 16 and gradually form a mud cake between the two double-sided filter cloths 16, thereby achieving filtration and separation. Supporting sliding arms 19 are fixedly provided on the two opposite sides of the filter frames 12. The lower side of the supporting sliding arms 19 and the auxiliary sliding arms 10 are provided with receiving grooves. Rollers 20 are rotatably provided inside the receiving grooves. The rollers 20 contact the upper side of the crossbeam 6. The rollers 20 can prevent the supporting sliding arms 19 and the auxiliary sliding arms 10 from rubbing against the crossbeam 6.

[0023] To ensure that wastewater does not leak during filtration, such as Figure 12 - Figure 14 , Figure 16 As shown, sealing components are provided on the two sides of the filter plate assembly that are far apart. The sealing components are used to prevent sewage leakage. The sealing components include an airbag sealing ring 1, an upper connecting pipe 48, a lower connecting pipe 49, an auxiliary airbag 2 for inflating the airbag sealing ring 1, and a main airbag 3 for inflating the airbag sealing ring 1. Both the airbag sealing ring 1 and the main airbag 3 are frame-shaped structures. A frame-shaped groove is provided on one side of the filter frame 12. A frame-shaped sealing ring 50 is fixedly provided on the inner side of the frame-shaped groove. During filtration and separation, two adjacent frame-shaped sealing rings 50 will be pressed together by the pressure of the oil cylinder 8, thereby ensuring a seal between two adjacent filter frames 12. The airbag sealing ring 1 is fixed on the inner side of the frame-shaped groove. The sealing gasket 52 can contact the airbag sealing ring 1 and the frame-shaped sealing ring 50. The sealing gasket 52 can ensure the seal between the filter frame 12 and the pressure plate 9, and the sealing gasket 52 can ensure the seal between the filter frame 12 and the thrust plate 5.

[0024] During use, the pressure of the sewage can compress the main airbag 3 to inflate the airbag sealing ring 1, thereby improving the sealing performance of the airbag sealing ring 1. Specifically, the main airbag 3 is fixed inside the filter frame 12 and on one side of the filter plate 14. The main airbag 3 is in contact with the double-sided filter cloth 16. The lower side of the airbag sealing ring 1, the lower top side of the filter frame 12, and the upper side of the main airbag 3 are all provided with through holes. The lower connecting pipe 49 is fixed inside the through holes. During filtration and separation, the pressurized sewage will compress the double-sided filter cloth 16, causing the double-sided filter cloth 16 to adhere tightly to the filter plate 14. At this time, the double-sided filter cloth 16 also presses the main airbag 3. Air enters the airbag sealing ring 1 through the lower connecting pipe 49, which increases the air pressure inside the airbag sealing ring 1. This causes the two adjacent airbag sealing rings 1 to stick together tightly, thus achieving double sealing and adaptive sealing. The greater the pressure of the sewage, the tighter the two airbag sealing rings 1 will stick together, giving the invention a strong sealing performance. Moreover, when the air pressure inside the airbag sealing ring 1 increases, the airbag sealing ring 1 will squeeze the frame-type sealing ring 50, which makes the two adjacent frame-type sealing rings 50 stick together even tighter, further improving the sealing performance between the two filter frames 12. Thus, the sealing component can improve its sealing performance by using the pressure of sewage.

[0025] In order to allow the filter plate assemblies to be pulled apart sequentially for slag discharge, such as Figure 1 - Figure 7 , Figure 9 , Figure 10 As shown, dual-purpose components are provided on the two sides of the main components that are far apart. The filter plate components are opened sequentially by the dual-purpose components to discharge slag. The dual-purpose components include a chain 22 and two sprockets 23. A C-shaped long tube 27 and a square tube 28 are provided on one side of the crossbeam 6. The C-shaped long tube 27 is located on the upper side of the square tube 28. The chain 22 is located on the inner side of the C-shaped long tube 27 and the square tube 28. Part of the chain 22 is inside the C-shaped long tube 27 and the square tube 28. Several L-shaped frames 29 are fixed between the C-shaped long tube 27 and the crossbeam 6. Several connecting frames 30 are fixed between the square tube 28 and the crossbeam 6. A C-shaped sleeve 31 is slidably sleeved on the outer periphery of the C-shaped long tube 27. A movable part is fixed on the upper side of the C-shaped sleeve 31. The upper side of the movable seat 33 is equipped with an arc-shaped claw 34 and a beveled claw 35, which are rotatably mounted on a pivot. A downward-pressing guide plate 11 is fixed to the lower side of the auxiliary sliding arm 10. The downward-pressing guide plate 11 can contact the arc-shaped claw 34 and the beveled claw 35. A first torsion spring is fixed between the arc-shaped claw 34 and the movable seat 33, and a second torsion spring is fixed between the beveled claw 35 and the movable seat 33. The first torsion spring is sleeved on one pivot, and the second torsion spring is sleeved on another pivot. When it is necessary to clean the mud cake between the two filter frames 12, the filter frames 12 need to be pulled apart sequentially. This can be achieved by the movable seat 33 moving left and right to pull apart the filter frames 12 sequentially. Specifically, first, the hydraulic cylinder 8 is retracted. Figure 7As shown, the movable seat 33 then translates to approach the filter frame 12. During this process, the beveled claw 35 and the arc-shaped claw 34 contact and pass over the pressure guide plate 11. When the arc-shaped claw 34 and the beveled claw 35 contact the pressure guide plate 11, they are pressed down and rotate simultaneously. After the arc-shaped claw 34 and the beveled claw 35 pass over the pressure guide plate 11, the beveled claw 35 automatically springs back and rotates to its original position due to the torque of the second torsion spring, and the arc-shaped claw 34 automatically springs back and rotates to its original position due to the torque of the first torsion spring. Then, the movable seat 33 mechanically translates. After the beveled claw 35 passes over a support slide arm 19, and the arc-shaped claw 34 contacts... When the support slide arm 19 is touched, the moving seat 33 and the arc-edge claw 34 will be blocked. Then, the moving seat 33 is controlled to move in the opposite direction. At this time, the support slide arm 19 and the filter frame 12 can be moved together by the inclined claw 35. When the filter frame 12 is attached to the pressing plate 9, the arc-edge claw 34 will rotate and press down because it contacts the lower guide plate 11. This ensures that the arc-edge claw 34 can smoothly pass over the auxiliary slide arm 10 and the pulled-out support slide arm 19. Then, the moving seat 33 can be controlled to approach the filter frame 12 to be pulled out again. Repeat the operation in sequence to pull out the filter frames 12 one by one, which is convenient for slag discharge.

[0026] In order to enable the movable seat 33 to automatically translate, such as Figure 5 , Figure 9 As shown, sprocket 23 is connected to the inner side of chain 22 via a meshing transmission. A rotating shaft 24 is fixedly mounted on the inner side of chain 22, with one end of the shaft 24 rotating on one side of crossbeam 6. Two protective covers 25 are fixedly mounted on one side of crossbeam 6. A motor 26 is fixedly mounted on the inner wall of one of the protective covers 25. The motor 26 is connected to an external power source and switch via wires. A connecting strip 32 is fixedly mounted on the inner wall of C-shaped sleeve 31, and is fixed to the lower top of chain 22. The shaft end of the motor 26 is connected to a... The outer circumferences of the rotating shaft 24 are connected by bevel gear transmission. When the movable seat 33 needs to be translated, it is only necessary to control the motor 26 to rotate. When the motor 26 rotates, it will drive one rotating shaft 24 to rotate through the bevel gear. The rotation of the rotating shaft 24 will drive the chain 22 to rotate. When the chain 22 rotates, it will drive the connecting bar 32, C-shaped sleeve 31 and movable seat 33 to translate. By controlling the motor 26 to rotate in the opposite direction, the movable seat 33 can be translated in the opposite direction, so that the movable seat 33 has an automatic translation function, and thus can realize automatic slag discharge.

[0027] In order to reduce the moisture content of the mud cake, such as Figure 11 - Figure 14 , Figure 17 - Figure 19As shown, the filter plate assembly is equipped with a dewatering component, which includes a lifting frame 40. The filter frame 12 slides inside the lifting frame 40. Receiving holes are provided on the opposite sides of the lifting frame 40. A supporting sliding arm 19 is located inside the receiving holes. A mesh frame groove is provided on the opposite side of the two filter plates 14. A compression mesh frame 42 is slidably and detachably installed in the mesh frame groove. Several guide rods 43 are fixed on the opposite side of the two compression mesh frames 42. Several guide holes are provided on one side of the filter plate 14, communicating with the mesh frame groove. The guide rods 43 slide inside the guide holes. Several inclined strips 44 are provided between the two filter plates 14. The end of the guide rod 43 away from the compression mesh frame 42 is fixed to the inclined strip 44. Two lifting plates 45 are fixedly installed on the lower top side of the lifting frame 40. Two square holes are provided on the upper side of the filter frame 12. A square rubber ring is fixedly installed inside the square holes. Plate 45 slides inside the square rubber ring. Several guide sleeves 46 are slidably sleeved on the outer periphery of lifting plate 45. The guide sleeves 46 are fixed between two filter plates 14. Several inclined blocks 47 are fixed on the two opposite sides of lifting plate 45. The inclined blocks 47 match the inclined strips 44 and are in contact with the inclined strips 44. When it is necessary to dewater the mud cake, simply press down the lifting frame 40. The lifting frame 40 will drive the lifting plate 45 and the inclined blocks 47 to descend together. When the inclined blocks 47 descend, they will drive the inclined strips 44, guide rods 43 and extrusion mesh frame 42 to translate. When the extrusion mesh frame 42 translates, it can extrude the double-sided filter cloth 16 and the mud cake, thereby squeezing out some of the water in the mud cake. The squeezed water will pass through the double-sided filter cloth 16 and filter holes 15 into the space between the two filter plates 14, and then flow out through the drain hole 21, thereby achieving dewatering of the mud cake.

[0028] In order to enable the lifting frame 40 to descend automatically, such as Figure 4 , Figure 9 - Figure 10 , Figure 12 As shown, a drive groove 39 is provided on one side of the movable seat 33, and drive shafts 41 are rotatably provided on both sides of the lifting frame 40. The drive shafts 41 are matched with the drive groove 39 and can contact the inner wall of the drive groove 39. When it is necessary to dewater the mud cake, it is only necessary to control the movable seat 33 to move horizontally, so that the lifting frame 40 can automatically descend. Specifically, when the movable seat 33 moves horizontally, the drive shaft 41 will enter the drive groove 39. Because of the inclined inner wall of the drive groove 39, the movable seat 33 can cause the drive shaft 41 and the lifting frame 40 to automatically descend when it moves, so as to carry out active dewatering. It can realize the following: the dewatering component is driven by the dual-purpose component to squeeze the mud cake to reduce the moisture content of the mud cake. Moreover, during the slag discharge process, the lifting frame 40 will also automatically descend, so that the extrusion mesh frame 42 can automatically push out the mud cake during the slag discharge process, thereby realizing automatic slag discharge.

[0029] To ensure that the inclined claw 35 is not obstructed during the dehydration of the mud cake and the repositioning of the moving seat 33, such as Figure 7 , Figure 9 As shown, an anti-collision control component is provided on one side of the inclined claw 35. The anti-collision control component includes a hollow base 36, which is fixed on one side of the movable base 33. An electric telescopic push rod 37 is fixedly provided on the inner side of the hollow base 36. The electric telescopic push rod 37 is connected to an external power source and switch through wires. A wedge block 38 is fixedly provided at the shaft end of the electric telescopic push rod 37. The wedge block 38 is slidably connected to the movable base 33 and contacts the inclined claw 35. The curved claw 34 can contact the lower guide plate 11 and the support sliding arm 19. The inclined claw 35 can contact the lower guide plate 11 and the support sliding arm 19. When it is necessary to make the inclined claw 35 rotate and press down to prevent it from being blocked, it is only necessary to control the extension of the electric telescopic push rod 37. The wedge block 38 can then lift the lower end of the inclined claw 35, allowing the upper end of the inclined claw 35 to rotate and press down, thereby preventing the inclined claw 35 from being blocked and ensuring that the movable base 33 can move smoothly.

[0030] To further improve the sealing between the two filter frames 12 during the dewatering of the mud cake, such as Figure 16 As shown, the sealing performance of the sealing component is further improved by combining a dual-purpose component and a dehydration component. Specifically, the dehydration component further enhances the sealing performance by squeezing the mud cake. Specifically, the dehydration component squeezes the auxiliary airbag 2 to inflate the airbag sealing ring 1, thereby further improving the sealing performance of the sealing component. In practice, the auxiliary airbag 2 is fixed to the upper side of the filter frame 12 and to the lower top of the lifting frame 40. Several pull ropes 51 are fixed inside the auxiliary airbag 2. The pull ropes 51 prevent significant expansion of the auxiliary airbag 2, ensuring that a large amount of gas from the main airbag 3 does not enter the auxiliary airbag. Inside the bladder 2, the airbag sealing ring 1 is sealed. The lower side of the auxiliary airbag 2, the upper side of the filter frame 12, and the upper side of the airbag sealing ring 1 are all provided with through holes. The upper connecting pipe 48 is fixed inside the through holes. The through holes and through holes on the filter frame 12 are connected to the frame groove. When the mud cake is dewatered, the lifting frame 40 will descend. At this time, the lifting frame 40 will squeeze the auxiliary airbag 2 to inflate the airbag sealing ring 1, thereby further increasing the air pressure inside the airbag sealing ring 1, thereby further improving the sealing between the two airbag sealing rings 1, and preventing solid impurities and water leakage when the squeezing frame 42 squeezes the mud cake.

[0031] The workflow of this embodiment is as follows: First, multiple filter plate assemblies are arranged sequentially on the crossbeam 6. Then, the hydraulic cylinder 8 is extended to press the multiple filter plate assemblies together with the clamping plate 9. Then, high-pressure sewage is supplied into the inlet pipe 7 for filtration and separation. During the filtration and separation process, adaptive sealing is possible. When it is necessary to dewater the sludge cake, the dual-purpose component and the dewatering component are used to actively dewater the sludge cake. After dewatering, the moving seat 33 is reset. During this period, the anti-collision control component assists the moving seat 33 in resetting. When it is necessary to discharge slag, the hydraulic cylinder 8 is retracted. Then, the dual-purpose component pulls open the filter plate assemblies sequentially to discharge slag. During the slag discharge process, the dual-purpose component and the dewatering component work together to automatically push out the sludge cake, thus achieving automatic slag discharge.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A leak-proof plate and frame filter press, comprising a main body assembly, wherein filter plate assemblies are arranged sequentially on the main body assembly, characterized in that, Dual-purpose components are provided on the two sides of the main component that are far apart. The filter plate assembly is opened sequentially by the dual-purpose components to discharge sludge. The filter plate assembly is provided with a dewatering component. The dewatering component is driven by the dual-purpose components to squeeze the sludge cake to reduce the moisture content of the sludge cake. Sealing components are provided on the two sides of the filter plate assembly that are far apart. The sealing components are used to prevent sewage leakage. The sealing components can improve their sealing performance by using the pressure of sewage. The sealing performance of the sealing components is further improved by the cooperation of the dual-purpose components and the dewatering components. The sealing assembly includes an airbag sealing ring and a main airbag for inflating the airbag sealing ring. The pressure of the sewage can compress the main airbag to inflate the airbag sealing ring, thereby improving the sealing performance of the airbag sealing ring. The sealing assembly also includes an auxiliary airbag for inflating the airbag sealing ring. When the dewatering assembly squeezes the mud cake, it can squeeze the auxiliary airbag to inflate the airbag sealing ring, thereby further improving the sealing performance of the sealing assembly.

2. The leak-proof plate and frame filter press according to claim 1, characterized in that, The main components include a frame, a thrust plate, and two crossbeams. The frame is fixed between the two crossbeams, and the thrust plate is fixed between the two crossbeams. A feed hole is provided on one side of the thrust plate, and a water inlet pipe is fixed inside the feed hole. Two mounting holes are provided on one side of the frame, and a hydraulic cylinder is fixed inside the mounting holes. A clamping plate is provided between the two crossbeams, and the clamping plate is slidably connected to the upper side of the crossbeam. The shaft end of the hydraulic cylinder is fixed to one side of the clamping plate. Auxiliary sliding arms are fixed on the two opposite sides of the clamping plate, and a downward pressure guide plate is fixed on the lower side of the auxiliary sliding arms.

3. A leak-proof plate and frame filter press according to claim 2, characterized in that, The filter plate assembly includes a filter frame, a connecting pipe, and double-sided filter cloth. Two filter plates are fixedly mounted on the inner side of the filter frame. Each filter plate has a pipe hole on one side, and the connecting pipe is fixed inside the pipe hole. The filter plates have several filter holes. The filter plates are located inside the double-sided filter cloth, and the double-sided filter cloth is located inside the connecting pipe. Frame-shaped slots are provided on the two opposite sides of the filter frame. The double-sided filter cloth is disassembled and snapped into the inner side of the frame-shaped slots. An inner pressure cloth ring and an outer pressure cloth ring are detachably connected to the inner side of the connecting pipe. The inner pressure cloth ring is detachably connected to the inner side of the outer pressure cloth ring by a thread. Supporting sliding arms are fixedly mounted on the two opposite sides of the filter frame. The lower side of the supporting sliding arm and the auxiliary sliding arm are provided with receiving grooves. Rollers are rotatably mounted inside the receiving grooves. The rollers are in contact with the upper side of the crossbeam. A drain hole is provided on one side of the filter frame.

4. A leak-proof plate and frame filter press according to claim 3, characterized in that, The dual-purpose assembly includes a chain and two sprockets. The sprockets are connected to the inner side of the chain. A rotating shaft is fixedly mounted on the inner side of the chain. One end of the rotating shaft rotates on one side of a crossbeam. Two protective covers are fixedly mounted on one side of the crossbeam. A motor is fixedly mounted on the inner wall of one of the protective covers. The motor is connected to an external power source and switch via wires. The shaft end of the motor is connected to the outer circumference of one of the rotating shafts via a bevel gear transmission. A C-shaped long tube and a square tube are provided on one side of the crossbeam. The chain is located inside the C-shaped long tube and the square tube. The C-shaped long tube is connected to the crossbeam. Several L-shaped frames are fixedly provided, and several connecting frames are fixedly provided between the square tube and the crossbeam. A C-shaped sleeve is slidably fitted on the outer periphery of the C-shaped long tube. A connecting strip is fixedly provided on the inner wall of the C-shaped sleeve. The connecting strip is fixed to the lower side of the top of the chain. A movable seat is fixedly provided on the upper side of the C-shaped sleeve. An arc-shaped claw and a beveled claw are rotatably provided on the upper side of the movable seat. A first torsion spring is fixed between the arc-shaped claw and the movable seat. A second torsion spring is fixed between the beveled claw and the movable seat. A drive groove is provided on one side of the movable seat. An anti-collision control component is provided on one side of the beveled claw.

5. A leak-proof plate and frame filter press according to claim 4, characterized in that, The anti-collision control component includes a hollow base, which is fixed on one side of a movable base. An electric telescopic push rod is fixedly provided on the inner side of the hollow base. A wedge block is fixedly provided on the shaft end of the electric telescopic push rod. The wedge block is slidably connected to the movable base and is in contact with the inclined claw.

6. A leak-proof plate and frame filter press according to claim 4, characterized in that, The dehydration assembly includes a lifting frame, with the filter frame sliding inside the lifting frame. The lifting frame has receiving holes on its opposite sides, and a support sliding arm is located inside the receiving holes. Drive shafts are rotatably mounted on both opposite sides of the lifting frame, and these drive shafts are matched with drive grooves. A mesh frame groove is provided on the opposite side of the two filter plates, and a compression mesh frame is slidably and detachably mounted within the mesh frame groove. Several guide rods are fixed on the opposite side of the two compression mesh frames, and several guide holes are provided on one side of each filter plate, communicating with the mesh frame groove. The rod slides inside the guide hole. Several beveled strips are provided between the two filter plates. The end of the guide rod away from the extrusion mesh frame is fixed to the beveled strip. Two lifting plates are fixedly provided on the lower top side of the lifting frame. Two square holes are provided on the upper side of the filter frame. A square rubber ring is fixedly provided inside the square hole. The lifting plate slides inside the square rubber ring. Several guide sleeves are slidably sleeved on the outer periphery of the lifting plate. The guide sleeves are fixed between the two filter plates. Several beveled blocks are fixed on the two opposite sides of the lifting plate. The beveled blocks match the beveled strips.

7. A leak-proof plate and frame filter press according to claim 6, characterized in that, The sealing assembly further includes an upper connecting pipe and a lower connecting pipe. A frame-shaped groove is provided on one side of the filter frame, and a frame-shaped sealing ring is fixedly provided on the inner side of the frame-shaped groove. The airbag sealing ring is fixed on the inner side of the frame-shaped groove. The auxiliary airbag is fixed on the upper side of the filter frame and on the lower side of the top of the lifting frame. The main airbag is fixed on the inner side of the filter frame and on one side of the filter plate. Through holes are provided on the lower side of the auxiliary airbag, the upper side of the filter frame, and the upper side of the airbag sealing ring. The upper connecting pipe is fixed on the inner side of the through holes. Through holes are provided on the lower side of the airbag sealing ring, the lower side of the top of the filter frame, and the upper side of the main airbag. The lower connecting pipe is fixed on the inner side of the through holes.

8. A leak-proof plate and frame filter press according to claim 7, characterized in that, Several pull ropes are fixedly installed on the inner side of the auxiliary airbag.

9. A leak-proof plate and frame filter press according to claim 2, characterized in that, The clamping plate and the thrust plate are each provided with a sealing groove on the side that is close to each other. The sealing groove has a frame structure and a sealing gasket is fixedly provided on the inner side of the sealing groove.

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