A plate and frame structure of a plate and frame filter press

Abstract

The utility model belongs to solid -liquid separation technical field especially a plate and frame structure of plate and frame filter press, in view of the low separation efficiency of the existing plate and frame filter press filter plate and the filter cake adhesion needs manual cleaning, lead to the problem of insufficient continuous operation ability, present and put forward the following scheme, including frame, the inside of frame is provided with and fixed end plate of compression end plate, the output of compression end plate connects hydraulic oil cylinder, frame inside slidingly sets up multiple filter plates, is connected through connecting assembly between adjacent filter plates, connecting assembly includes the transmission group rotatably arranged in the both sides of filter plate, in the utility model, through double sector gear realizes filter plate forced mechanical linkage, improves separation efficiency and avoids partial wear and jam; the opening and closing of filter plate are controlled through the drive steel wire rope of rotating rod, reduce energy consumption and reduce the risk of rope fracture, utilize motor and screw rod cooperation automatic cleaning filter plate surface, save manpower and improve filtration quality and equipment stability.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation technology, and in particular to a plate and frame structure for a plate and frame filter press. Background Technology

[0002] Plate and frame filter presses are intermittent solid-liquid separation devices. They consist of multiple filter plates and frames arranged to form filter chambers. Under the pressure of a feed pump, the liquid is fed into each filter chamber, and the solid and liquid are separated through the filter medium. Due to their advantages such as good separation effect, wide applicability, simple operation, and low investment, they are widely used in chemical, dye, petroleum, ceramic, pharmaceutical, sugar, starch, paint, metallurgy, and wastewater treatment industries.

[0003] However, existing plate and frame filter presses mostly separate the filter plates by using a plate puller or a corner-shifting mechanism, but this can only separate one filter plate at a time, resulting in low efficiency. At the same time, the filter cake adhering to the filter screen is usually cleaned manually, which affects the continuous operation capability. Therefore, we propose a plate and frame structure for a plate and frame filter press to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing plate and frame filter presses, such as low filter plate separation efficiency and the need for manual cleaning of adhered filter cakes, which leads to insufficient continuous operation capacity. Therefore, this invention proposes a plate and frame structure for a plate and frame filter press.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A plate and frame structure for a plate and frame filter press includes a frame, wherein a pressing end plate and a fixed end plate are provided inside the frame, and the pressing end plate is connected to the output end of a hydraulic cylinder;

[0007] Multiple filter plates are slidably arranged inside the frame, and adjacent filter plates are connected by connecting components.

[0008] The connecting assembly includes a transmission group rotatably disposed on both sides of the filter plate. Each transmission group includes a first connecting rod and a second connecting rod. The ends of the first connecting rod and the second connecting rod are fixedly connected to meshing sector gears. The meshing of the sector gears enables the synchronous separation of all filter plates.

[0009] The top of the frame is provided with a drive assembly, including a rotatable rotating rod. The two ends of the rotating rod are fixedly fitted with storage wheels, and the steel wire ropes wound around the storage wheels are connected to the filter plate near the pressing end plate.

[0010] The cleaning assembly is located inside the frame above the filter plate, including a sliding movable plate, two guide rods passing through the movable plate, and a scraper fixed to the bottom of the guide rods.

[0011] In one possible design, sliders are provided on both sides of the plurality of filter plates, the sliders are slidably connected to the frame, and connecting blocks are fixedly connected to one side of the two sliders adjacent to the pressing end plate, and one end of the two steel wire ropes is fixedly connected to the corresponding two connecting blocks respectively.

[0012] In one possible design, the two first links and two second links on the same side of two adjacent filter plates are rotatably connected.

[0013] In one possible design, the drive assembly also includes guide wheels rotatably mounted on both sides of the frame, with the wire rope draped over the guide wheels.

[0014] In one possible design, a transmission box is fixedly mounted on the top of the frame, and the rotating rod rotatably passes through the transmission box; a first motor is fixedly connected to one side of the transmission box, and the output end of the first motor is connected to the rotating rod through bevel gear meshing.

[0015] In one possible design, the cleaning assembly further includes two drive gears rotatably disposed inside the movable plate, the two drive gears being meshed together; a telescopic screw is threadedly connected to the rotating shaft of one of the drive gears, the bottom end of the telescopic screw being fixedly connected to a scraper; a third motor is fixedly connected to the top of the movable plate, the output end of the third motor being fixedly connected to the rotating shaft of the other drive gear.

[0016] In one possible design, a limiting groove is provided on the telescopic lead screw, and a limiting block that mates with the limiting groove is provided on the moving plate; limiting rings are fixedly sleeved on the top ends of both guide rods; the telescopic lead screw is prevented from disengaging by the cooperation of the limiting block and the limiting groove.

[0017] In one possible design, grooves are formed on the inner walls of both sides of the frame, and the two ends of the movable plate are slidably disposed in the grooves; a first lead screw is rotatably disposed in one of the grooves, and the first lead screw is threaded through the movable plate; a second motor that drives the first lead screw is fixedly disposed on one side of the frame.

[0018] In one possible design, the clamping end plate, the fixed end plate, and the filter plate are all provided with water outlets, and the water outlets can be detachably connected to water outlet hoses; a water tank is fixedly connected to one side of the frame for collecting filtrate.

[0019] In this application, during operation, the hydraulic cylinder is started, and its output end pushes the clamping end plate to move towards the fixed end plate. This process achieves the clamping of the filter plates, preparing for filtration and preventing material leakage, until multiple filter plates are clamped. At this time, the material to be filtered enters the space between the filter plates through the clamping end plate, the fixed end plate, and the feed inlets on the multiple filter plates. The material enters the space between the filter plates for solid-liquid separation. The filtrate flows to the water tank for collection after being detachably connected to the outlets of the clamping end plate, the fixed end plate, and the multiple filter plates with water hoses.

[0020] After filtration, the filter plates need to be opened for unloading. The hydraulic cylinder retracts, driving the pressing end plate to move. At the same time, the first motor is started, and the output end of the first motor rotates, driving the bevel gear at its end to rotate. The bevel gear on the rotating rod meshing with the bevel gear rotates accordingly, causing the rotating rod to rotate. The receiving wheels at both ends of the rotating rod rotate synchronously, and the receiving wheels begin to wind up the steel wire rope. The steel wire rope pulls the connecting block on the filter plate adjacent to the pressing end plate, and the filter plate begins to move towards the pressing end plate. Since the adjacent filter plates are connected by the connecting assembly, that is, the first connecting rod and the second connecting rod on the same side of the adjacent filter plates are rotatably connected, and the sector gears at the ends of the first connecting rod and the second connecting rod mesh with each other, when a filter plate moves, through the meshing transmission of the sector gears, the movement of the first filter plate towards the pressing end plate will force each subsequent adjacent filter plate to produce a relative opposite movement, ultimately causing all filter plates to move synchronously away from the fixed end plate, that is, in the direction of the retraction of the pressing end plate, achieving efficient and stable synchronous separation.

[0021] After unloading, the filter residue remaining on the filter plate surface needs to be cleaned. The second motor is started, which drives the first lead screw to rotate. The moving plate, which is threaded to the first lead screw, slides horizontally in the slide groove of the frame, realizing the lateral movement of the cleaning component and expanding the cleaning range. At the same time, the third motor is started. The output end of the third motor drives one of the transmission gears to rotate, and the other transmission gear meshing with the first transmission gear rotates in the opposite direction. The telescopic lead screw on the rotating shaft of one of the transmission gears moves downward under the action of the thread, driving the scraper to descend. Two guide rods ensure the stability of the scraper descent process, and the limiting ring prevents the guide rod from disengaging. The limiting block cooperates with the limiting groove on the telescopic lead screw to prevent the telescopic lead screw from disengaging when rotating. The moving plate drives the scraper to move in the horizontal and vertical directions to clean the surface of the filter plate.

[0022] Beneficial effects: In this utility model, the plate and frame structure of the plate and frame filter press enables the adjacent filter plates to achieve forced mechanical linkage through the meshing transmission of the double sector gears of the connecting components. This not only ensures the synchronous separation of multiple filter plates, but also avoids the problem of uneven wear in traditional hydraulic series connection, reduces the risk of filter plate jamming, and improves the filter plate separation efficiency.

[0023] In this utility model, the plate and frame structure of the plate and frame filter press adopts a single rotating rod to drive double receiving wheels to load and unload steel wire ropes, optimizes the rope path through guide wheels, and achieves efficient transmission by combining bevel gears and a first motor to control the opening and closing of all filter plates. Compared with the traditional multi-hydraulic cylinder structure, it reduces energy consumption, and the steel wire ropes are evenly stressed, reducing the risk of breakage and extending the service life of the equipment.

[0024] In this utility model, the plate and frame structure of the plate and frame filter press can slide horizontally on the frame through the cooperation of the first lead screw and the second motor. The third motor drives the telescopic lead screw to rotate through the transmission gear, thereby controlling the lifting and lowering of the scraper. This can automatically and comprehensively clean the surface of the filter plate, save manpower, effectively improve the quality of subsequent filtration, and make the equipment operation more stable.

[0025] In this invention, forced mechanical linkage of the filter plates is achieved through double sector gears, which improves separation efficiency and avoids uneven wear and jamming; the opening and closing of the filter plates is controlled by a rotating rod driving a steel wire rope, which reduces energy consumption and the risk of rope breakage; the filter plate surface is automatically cleaned by a motor and lead screw, which saves manpower and improves filtration quality and equipment stability. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the plate and frame structure of a plate and frame filter press proposed in this utility model;

[0027] Figure 2 This is a partially enlarged structural diagram of the filter plates in a plate and frame filter press according to the present invention.

[0028] Figure 3 This is a three-dimensional structural diagram of the steel wire rope in the plate and frame structure of a plate and frame filter press proposed in this utility model.

[0029] Figure 4 This is a partially exploded three-dimensional structural diagram of the moving plate of a plate and frame filter press according to the present invention.

[0030] In the diagram: 1. Frame; 2. Pressing end plate; 3. Filter plate; 301. Slider; 4. First connecting rod; 5. Second connecting rod; 6. Sector gear; 7. Connecting block; 8. Rotating rod; 9. Receiving wheel; 10. Steel wire rope; 11. Guide wheel; 12. First motor; 13. Bevel gear; 14. Moving plate; 1401. Limiting block; 15. First lead screw; 16. Second motor; 17. Transmission gear; 18. Telescopic lead screw; 1801. Limiting groove; 19. Third motor; 20. Guide rod; 21. Limiting ring; 22. Water outlet hose; 23. Water tank; 24. Hydraulic cylinder; 25. Fixed end plate; 26. Scraper. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] In one embodiment: Refer to Figure 1-4 A filter press includes a frame 1, which serves as the supporting foundation for the entire structure. The frame 1 contains a pressing end plate 2 and a fixed end plate 25. A hydraulic cylinder 24 is fixedly mounted on one side of the frame 1, with its output end connected to one side of the pressing end plate 2. The fixed end plate 25 is fixed to the inner wall of the frame 1 on the side away from the hydraulic cylinder 24. Multiple filter plates 3 are slidably arranged inside the frame 1 between the pressing end plate 2 and the fixed end plate 25. Each filter plate 3 has sliders 301 mounted on both sides, which slide in cooperation with the frame 1 to ensure smooth sliding of the filter plate 3 within the frame 1.

[0033] Adjacent filter plates 3 are connected by a connecting assembly. The connecting assembly includes two sets of transmission groups rotatably mounted on both sides of the filter plate 3. Each transmission group consists of a first connecting rod 4 and a second connecting rod 5 rotatably connected to one side of the filter plate 3. Both the ends of the first connecting rod 4 and the second connecting rod 5 are fixedly connected to sector gears 6, and the two sector gears 6 mesh with each other. The two first connecting rods 4 and the two second connecting rods 5 on the same side of adjacent filter plates 3 are also rotatably connected to each other. Through the meshing transmission of the double sector gears 6, when one filter plate moves, it can force the subsequent adjacent filter plates to produce a relatively opposite movement, achieving synchronous separation of multiple filter plates. This avoids the uneven wear problem of traditional hydraulic series connection, reduces the risk of filter plate jamming, and improves filter plate separation efficiency.

[0034] A drive assembly for simultaneously opening multiple filter plates 3 is installed at the top of the frame 1. A rotating rod 8 of the drive assembly is rotatably mounted on the frame 1, with receiving wheels 9 fixedly fitted at both ends of the rotating rod 8. Steel wire ropes 10 are wound around the two receiving wheels 9. Connecting blocks 7 are fixedly connected to one side of two sliders 301 adjacent to the pressing end plate 2, and one end of each of the two steel wire ropes 10 is fixedly connected to the corresponding connecting blocks 7. Guide wheels 11 are rotatably mounted on both sides of the frame 1, with the two steel wire ropes 10 resting on the guide wheels 11 to optimize the rope path. A transmission box is fixedly installed at the top of the frame 1, with the rotating rod 8 rotating through the transmission box. A first motor 12 is fixedly connected to one side of the transmission box, and the output end of the first motor 12 extends rotatably into the transmission box. Bevel gears 13 are fixedly fitted on the outer wall of the rotating rod 8 and inside the transmission box at the output end of the first motor 12, and the two bevel gears 13 are meshed together. When the first motor 12 is working, it drives the rotating rod 8 to rotate via the bevel gear 13. The take-up wheel 9 winds up the steel wire rope 10, pulling the connecting block 7 on the filter plate 3 adjacent to the pressing end plate 2, thus opening the filter plate 3. The method of using a single rotating rod 8 to drive the double take-up wheels 9 to wind and unwind the steel wire rope 10, combined with the bevel gear 13 and the first motor 12, achieves efficient transmission. This reduces energy consumption compared to the traditional multi-hydraulic cylinder structure, and the steel wire rope 10 is evenly stressed, reducing the risk of breakage and extending the service life of the equipment.

[0035] A cleaning assembly is installed inside the frame 1, above multiple filter plates 3. A movable plate 14 of the cleaning assembly is slidably mounted on the frame 1. Slide grooves are formed on the inner walls of both sides of the frame 1, and both ends of the movable plate 14 extend into the corresponding slide grooves and are slidably connected to them. A first lead screw 15 is rotatably mounted inside one of the slide grooves, threaded through the movable plate 14. A second motor 16 driving the first lead screw 15 is fixedly mounted on one side of the frame 1. Two guide rods 20 slide through the movable plate 14, with scrapers 26 fixedly connected to the bottom ends of the two guide rods 20, and limiting rings 21 fixedly fitted to the top ends of each guide rod 20. Inside the movable plate 14, two transmission gears 17 are rotatably mounted via a rotating shaft. These gears mesh together. One of the transmission gears 17 has a threaded hole on its rotating shaft, which is threadedly connected to a telescopic lead screw 18. The movable plate 14 has a through hole for the telescopic lead screw 18 to pass through. The bottom end of the telescopic lead screw 18 is fixedly connected to the top of the scraper 26. A third motor 19 is fixedly connected to the top of the movable plate 14, and the output end of the third motor 19 is fixedly connected to the rotating shaft of the other transmission gear 17. A limiting block 1401, matching the upper limit groove 1801 of the telescopic lead screw 18, is provided on the movable plate 14 at the through hole to prevent the telescopic lead screw 18 from disengaging during rotation.

[0036] The second motor 16 drives the first lead screw 15 to rotate, causing the moving plate 14 to slide horizontally in the groove of the frame 1; the third motor 19 drives the telescopic lead screw 18 to rotate through the transmission gear 17, controlling the lifting and lowering of the scraper 26, realizing automatic cleaning of the surface of the filter plate 3, saving manpower, effectively improving the quality of subsequent filtration, and making the equipment operation more stable.

[0037] This application can be used in the field of solid-liquid separation technology, or in other fields applicable to this application.

[0038] In another embodiment: Reference Figure 1-2 Based on Embodiment 1, an improvement is made to the plate and frame structure of a plate and frame filter press, which is applied to the field of solid-liquid separation technology. Furthermore, outlets are provided on the pressing end plate 2, the fixed end plate 25, and multiple filter plates 3. Each outlet is connected to a water outlet hose 22 via bolts. A water tank 23 is fixedly connected to one side of the frame 1 below the multiple water outlet hoses 22. During operation, the hydraulic cylinder 24 is activated, and its output end pushes the pressing end plate 2 towards the fixed end plate 25, pressing the multiple filter plates 3 together. The material to be filtered enters the space between the filter plates through the inlets on the pressing end plate 2, the fixed end plate 25, and the multiple filter plates 3 for solid-liquid separation. The filtrate flows through the water outlet hoses 22 to the water tank 23 for collection. After filtration, the hydraulic cylinder 24 retracts, moving the pressing end plate 2, and simultaneously starting the first motor 12 to open the filter plates 3 for unloading. After unloading, the second motor 16 and the third motor 19 are activated, and the cleaning assembly cleans the residual filter residue on the surface of the filter plates 3.

[0039] However, as is well known to those skilled in the art, the working principles and wiring methods of the first motor 12, the second motor 16 and the third motor 19 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0040] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plate and frame structure for a plate and frame filter press, comprising a frame (1), characterized in that: The frame (1) is provided with a pressing end plate (2) and a fixed end plate (25) inside. The pressing end plate (2) is connected to the output end of the hydraulic cylinder (24). Multiple filter plates (3) are slidably arranged inside the frame (1), and adjacent filter plates (3) are connected by a connecting component; The connecting assembly includes a transmission group rotatably disposed on both sides of the filter plate (3). Each transmission group includes a first connecting rod (4) and a second connecting rod (5). The ends of the first connecting rod (4) and the second connecting rod (5) are fixedly connected to a sector gear (6) that meshes with each other. The meshing of the sector gear (6) enables all filter plates (3) to separate synchronously. The top of the frame (1) is provided with a drive assembly, including a rotating rod (8) that is rotatably provided. The two ends of the rotating rod (8) are fixedly fitted with storage wheels (9). The steel wire rope (10) wound around the storage wheels (9) is connected to the filter plate (3) near the pressing end plate (2). The cleaning assembly is located above the filter plate (3) inside the frame (1), including a sliding movable plate (14), two guide rods (20) passing through the movable plate (14), and a scraper (26) fixed at the bottom of the guide rods (20).

2. The plate and frame structure of a plate and frame filter press according to claim 1, characterized in that: Slider (301) is provided on both sides of the plurality of filter plates (3). The slider (301) is slidably connected to the frame (1). A connecting block (7) is fixedly connected to one side of the two sliders (301) adjacent to the pressing end plate (2). One end of the two steel wire ropes (10) is fixedly connected to the corresponding two connecting blocks (7).

3. The plate and frame structure of a plate and frame filter press according to claim 1, characterized in that: The two first links (4) and two second links (5) on the same side of two adjacent filter plates (3) can be rotatably connected.

4. The plate and frame structure of a plate and frame filter press according to claim 1, characterized in that: The drive assembly also includes guide wheels (11) rotatably disposed on both sides of the frame (1), and the wire rope (10) is laid on the guide wheels (11).

5. The plate and frame structure of a plate and frame filter press according to claim 4, characterized in that: A transmission box is fixedly installed on the top of the frame (1), and the rotating rod (8) rotatably passes through the transmission box; a first motor (12) is fixedly connected to one side of the transmission box, and the output end of the first motor (12) is meshed with the rotating rod (8) through a bevel gear (13).

6. The plate and frame structure of a plate and frame filter press according to claim 1, characterized in that: The cleaning assembly also includes two transmission gears (17) rotatably disposed inside the movable plate (14), the two transmission gears (17) being meshed together; a telescopic screw (18) is threadedly connected to the rotating shaft of one of the transmission gears (17), the bottom end of the telescopic screw (18) being fixedly connected to the scraper (26); a third motor (19) is fixedly connected to the top of the movable plate (14), the output end of the third motor (19) being fixedly connected to the rotating shaft of the other transmission gear (17).

7. The plate and frame structure of a plate and frame filter press according to claim 6, characterized in that: The telescopic screw (18) has a limiting groove (1801), and the moving plate (14) is provided with a limiting block (1401) that cooperates with the limiting groove (1801); the top ends of the two guide rods (20) are fixedly fitted with limiting rings (21); the limiting block (1401) cooperates with the limiting groove (1801) to prevent the telescopic screw (18) from disengaging.

8. The plate and frame structure of a plate and frame filter press according to claim 6, characterized in that: The inner walls of both sides of the frame (1) are provided with sliding grooves, and the two ends of the movable plate (14) are slidably disposed in the sliding grooves; a first lead screw (15) is rotatably disposed in one of the sliding grooves, and the first lead screw (15) is threaded through the movable plate (14); a second motor (16) that drives the first lead screw (15) is fixedly disposed on one side of the frame (1).

9. The plate and frame structure of a plate and frame filter press according to claim 1, characterized in that: Water outlets are provided on the pressing end plate (2), the fixed end plate (25) and the filter plate (3), and the water outlets can be detachably connected to the water outlet hose (22); a water tank (23) is fixedly connected to one side of the frame (1) for collecting filtrate.

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