Diaphragm type filter press

Abstract

The utility model relates to the technical field of filter presses, in particular to a diaphragm type filter press which comprises a case, baffles arranged on two sides of the top of the case, a plurality of filter frame plates arranged between the two baffles, a hydraulic cylinder arranged on the outer wall of the baffle on the right side, a top cover arranged above the case, inserting plates symmetrically arranged on the lower surface of the top cover, and sliding rods symmetrically arranged between the two baffles. U-shaped clamping blocks are arranged at the positions, corresponding to the sliding rods, of the two sides of the filter frame plate, and storage boxes are arranged in the through grooves. According to the diaphragm type filter press, under the cooperation of a storage box with a pull handle, concentrated collection of discharged filter residues and a top cover with an insertion plate, the upper portion of the machine box is protected, the influence of falling of dust and water drops on the upper portion on the filter frame plate is reduced, then the influence of the external environment on squeezing and filtering is reduced, U-shaped clamping blocks are symmetrically arranged on the filter frame plate and matched with sliding rods in an inserted mode, and therefore the filtering effect is improved. The bottom of the inserting plate is close to the U-shaped clamping block to limit the position of the filter frame plate, the influence of separation on squeezing fit is reduced, the top cover is taken out from the upper portion, and the filter frame plate can be taken out and replaced quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of filter presses, in particular to a diaphragm filter press. Background Art

[0002] Diaphragm filter press, also known as diaphragm filter press, is a filter press with an elastic membrane installed between the filter plate and the filter cloth. During use, when the feeding is completed, high-pressure fluid or gas medium can be injected into the diaphragm plate. At this time, the entire diaphragm will bulge to compress the filter cake, thereby achieving further dehydration of the filter cake, which is commonly referred to as squeeze filtration;

[0003] The utility model with announcement number CN221107120U discloses a diaphragm filter press, comprising a frame and a plurality of filter press plates arranged in parallel on the frame, a diaphragm is arranged in the filter press plate, and further comprising a main air chamber, a plurality of vertical guide rails, a compression rod, a plurality of controllers, a plurality of weight sensors and a plurality of elastic support rods, wherein the vertical guide rails are evenly arranged relative to the frame, the bottom of the vertical guide rails is fixedly arranged, and the vertical guide rails are slidably connected to the frame; the main air chamber is arranged below the frame; the compression rod is fixedly connected to the frame, and the compression rod controls the main air chamber to inhale or deflate by moving up and down; the weight sensors are evenly fixedly arranged below the frame; the elastic support rods are vertically arranged, the bottom of the elastic support rods is fixedly connected to the top of the weight sensor, and the top of the elastic support rods is fixedly connected to the frame;

[0004] In the above technical solution, when the solids in the chamber formed by the filter press plates reach a certain proportion, the filter press plates and the frame slide downward along the vertical guide rails, and the overall weight of the frame drives the main air chamber to contract and exhaust, so that the diaphragm is inflated to squeeze the mixed liquid in the chamber. There is no need to connect an air compressor, the main air chamber structure is simple, and the cost is lower; however, the filter press plates are not convenient for quick and stable assembly during installation, and the filter residues are not convenient for centralized storage and matching after the filtration operation, which reduces the impact of scattering on the surrounding environment, and at the same time cannot reduce the impact of the external environment on the internal. Utility Model Content

[0005] The purpose of the utility model is to provide a diaphragm filter press to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A diaphragm filter press comprises a chassis, baffles are provided on both sides of the top of the chassis, a plurality of filter frame plates are provided between the two baffles, a hydraulic cylinder is provided on the outer wall of the baffle on the right side, a top cover is provided above the chassis, plug plates are symmetrically provided on the lower surface of the top cover, slide grooves are provided on the opposite sides of the baffles corresponding to the plug plates, slide rods are symmetrically provided between the two baffles, U-shaped blocks are provided on both sides of the filter frame plates corresponding to the slide rods, the U-shaped blocks on the same side are connected by a binding belt, a through slot is provided on the front end surface of the chassis near the bottom, and a storage box is provided in the through slot.

[0008] Furthermore, the width of the inner wall of the through groove is adapted to the width of the outer wall of the storage box, and handles are symmetrically provided on the outer wall of the storage box. The handles are welded and fixed to the storage box, and the internal space of the storage box is connected to the space below the filter frame plate.

[0009] In the utility model, the storage box is provided to help collect the filter residues between the filter frame plates, and provides a fulcrum with the cooperation of the pull handle, which helps to manually take out and replace the storage box and perform internal cleaning operations.

[0010] Specifically, the bottom of the baffle is welded and fixed to the chassis, the width of the inner wall of the slide groove is matched with the width of the outer wall of the plug-in board, and the top of the plug-in board is welded and fixed to the bottom of the top cover.

[0011] In the utility model, the top cover is plugged into and matched with the baffle with the cooperation of the plug plate, thereby increasing the stability of the combined installation. At the same time, the bottom of the plug plate is close to the U-shaped block, thereby limiting the position of the U-shaped block and preventing the U-shaped block from moving upward, causing the U-shaped block to detach from the slide rod and affecting the horizontal movement of the filter frame.

[0012] Secondly, screw holes are provided on the outer wall of the plug board, fastening bolts are provided in the screw holes, and positioning holes are provided on the outer wall of the baffle at positions corresponding to the screw holes.

[0013] In the utility model, the fastening bolt passes through the positioning hole and is threadedly connected with the screw hole, so that the position of the inserting plate and the baffle is fixedly matched, thereby increasing the stability of the installation.

[0014] Specifically, both ends of the slide bar are respectively welded and fixed to the baffle, and the width of the outer wall of the slide bar is adapted to the width of the inner wall of the clamping groove on the U-shaped clamping block.

[0015] In the utility model, the cooperation of the slide rod helps to stably engage the U-shaped clamping block, thereby achieving position limitation of the filter frame plate and helping to lift the filter frame plate.

[0016] It should be noted that a filter press tank is provided on the left side of the filter frame plate, a filter screen is provided on the inner wall of the filter press tank, liquid inlet holes are provided on the side walls of the filter frame plate, and through holes connected to the liquid inlet holes are symmetrically provided at the top of the inner wall of the filter press tank.

[0017] In the utility model, the through hole connects the liquid inlet hole and the filter press tank so that the material to be filtered and squeezed can enter the filter press tank for squeezing. The cooperation of the filter screen helps to intercept the material.

[0018] Furthermore, a diaphragm is provided on the right side of the filter frame plate, an air flow tube connected to the inside of the diaphragm is provided on the top of the filter frame plate, a liquid storage tank is provided in the middle of the filter frame plate, the liquid storage tank and the filter press tank are separated by a filter screen, and a drain pipe connected to the liquid storage tank is also provided on the front end surface of the filter frame plate, a retaining ring is provided on the left side of the outer wall of the filter frame plate, and an annular groove starts from the right side of the outer wall of the filter frame plate.

[0019] In the utility model, the diaphragm, in cooperation with the air flow tube, helps external high-pressure gas to enter the interior, causing the diaphragm to expand and squeeze the material between the filter frame plates. In cooperation with the liquid storage tank, it helps the squeezed liquid to enter, and in cooperation with the discharge pipe, the liquid is discharged in a centralized manner. The end of the discharge pipe is equipped with a butterfly valve, and the butterfly valve helps to manually control the opening or closing, and centrally discharge the liquid. The provision of a clamping ring for plugging in with the annular groove helps to tightly and stably plug in two adjacent filter frame plates, thereby increasing the stability of the combination.

[0020] Preferably, the hydraulic cylinder is fixedly connected to the baffle by screws, and a pressure plate is provided at the end of the telescopic arm of the hydraulic cylinder. The pressure plate is tightly connected to the right side wall of the filter frame plate on the right side. A liquid inlet pipe and an air inlet pipe are also provided on the baffle.

[0021] In the utility model, the hydraulic cylinder is connected to the external power supply and started by the control switch to achieve the extension or shortening of the telescopic arm, and the horizontal movement and coordination of multiple filter frame plates are driven by the pressure plate. When the telescopic arm is extended, the filter frame plates are tightly fitted together for squeezing. When the telescopic arm is shortened, the filter frame plates are separated, and the filter residue is discharged into the storage box under the action of gravity.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The utility model provides a storage box with a pull handle to centrally collect the discharged filter residue. The top cover with an insert plate cooperates to protect the top of the chassis, reduce the impact of dust and water droplets falling from above on the filter frame, and thus reduce the impact of the external environment on the squeezing and filtration. The filter frame is symmetrically provided with U-shaped blocks that are plugged into the slide rod, and the bottom of the insert plate is close to the U-shaped block to limit the position of the filter frame, reducing the impact of separation on squeezing. The top cover is removed from the top, which is convenient for quickly removing and replacing the filter frame.

[0024] 2. The utility model increases the stability of the combination of the filter frame plates by arranging a liquid inlet pipe to be plugged into the liquid inlet hole, and the air inlet pipe is connected to the corresponding air inlet pipe, and the two adjacent filter frame plates are plugged into the annular groove through a clamping ring, and the liquid inlet holes between the two adjacent filter frame plates are tightly fitted, which helps the mixed solution to enter the corresponding filter press tank. With the cooperation of the diaphragm, it is inflated through the air flow pipe for expansion and extrusion. The discharge pipe is connected to the liquid storage tank, and with the cooperation of the butterfly valve, it helps to discharge the filtered solution in a centralized manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic side view of the entirety of the present invention;

[0027] Figure 3 This is a schematic diagram of the utility model with the top cover removed;

[0028] Figure 4 This is a schematic diagram of the combined structure of the top cover and chassis of the utility model;

[0029] Figure 5 This is a schematic diagram of the combined structure of the chassis and storage box of the present utility model;

[0030] Figure 6 This is a schematic diagram of the filter frame and plate combination structure of the utility model;

[0031] Figure 7 This is a schematic diagram of the cross-sectional structure of the filter frame plate of the present utility model.

[0032] The meaning of each number in the figure is:

[0033] 1. Chassis; 10. Baffle; 100. Slide; 101. Positioning hole; 11. Through slot; 110. Storage box; 111. Handle; 12. Slide rod; 13. Liquid inlet pipe; 14. Air inlet pipe;

[0034] 2. Top cover; 20. Insert plate; 200. Screw hole; 201. Fastening bolt;

[0035] 3. Filter frame; 30. Filter press tank; 300. Filter screen; 31. Liquid inlet; 310. Through hole; 32. U-shaped clamp; 320. Tie belt; 33. Drain pipe; 34. Diaphragm; 340. Air flow pipe; 35. Liquid storage tank; 36. Annular groove; 37. Snap ring;

[0036] 4. Hydraulic cylinder; 40. Pressure plate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0038] See also Figure 1-Figure 7 , this embodiment provides a technical solution:

[0039] A diaphragm filter press includes a chassis 1, with baffles 10 provided on both sides of the top of the chassis 1, and a plurality of filter frame plates 3 provided between the two baffles 10. A filter press tank 30 is provided on the left side of the filter frame plate 3, and a filter screen 300 is provided on the inner wall of the filter press tank 30. Liquid inlet holes 31 are provided on the side walls of the filter frame plate 3, and through holes 310 connected to the liquid inlet holes 31 are symmetrically provided at the top of the inner wall of the filter press tank 30.

[0040] In the present invention, the through hole 310 connects the liquid inlet 31 and the filter press 30 so that the material to be filtered and squeezed can enter the filter press 30 for squeezing. The filter screen 300 can help intercept the material.

[0041] Furthermore, a diaphragm 34 is provided on the right side of the filter frame plate 3, and an air flow tube 340 is provided on the top of the filter frame plate 3 to communicate with the inside of the diaphragm 34. A liquid storage tank 35 is provided in the middle of the filter frame plate 3, and the liquid storage tank 35 and the filter press tank 30 are separated by a filter screen 300. A drain pipe 33 connected to the liquid storage tank 35 is also provided on the front end surface of the filter frame plate 3, a retaining ring 37 is provided on the left side of the outer wall of the filter frame plate 3, and an annular groove 36 starts from the right side of the outer wall of the filter frame plate 3.

[0042] In the present invention, the diaphragm 34, in cooperation with the air flow tube 340, helps external high-pressure gas to enter the interior, causing the diaphragm 34 to expand and squeeze the material between the filter frame plates 3, and in cooperation with the liquid storage tank 35, helps the squeezed liquid to enter, and in cooperation with the drain pipe 33, the liquid is discharged in a centralized manner, and the end of the drain pipe 33 is equipped with a butterfly valve, and the butterfly valve helps to manually control the opening or closing, and centrally discharge the liquid. The provision of a snap ring 37 and the annular groove 36 for plugging and fitting helps to tightly and stably plug and fit the two adjacent filter frame plates 3, thereby increasing the stability of the combination.

[0043] Specifically, a hydraulic cylinder 4 is provided on the outer wall of the right baffle 10, and the hydraulic cylinder 4 is fixedly connected to the baffle 10 by screws. A pressure plate 40 is provided at the end of the telescopic arm of the hydraulic cylinder 4, and the pressure plate 40 is tightly fitted and connected to the right side wall of the filter frame plate 3 on the right side. A liquid inlet pipe 13 is also provided on the baffle 10, and an air inlet pipe 14 is also provided on the baffle 10.

[0044] In the present utility model, the hydraulic cylinder 4 is connected to an external power supply and started by a control switch to extend or shorten the telescopic arm, and the pressure plate 40 drives multiple filter frame plates 3 to move horizontally to cooperate. When the telescopic arm is extended, the filter frame plates 3 are tightly fitted together for squeezing. When the telescopic arm is shortened, the filter frame plates 3 are separated, and the filter residue is discharged into the storage box 110 under the action of gravity.

[0045] It should be noted that a top cover 2 is provided above the chassis 1, and plug-in plates 20 are symmetrically provided on the lower surface of the top cover 2. Slide grooves 100 are provided on the opposite sides of the baffles 10 corresponding to the plug-in plates 20. The bottoms of the baffles 10 are welded and fixed to the chassis 1. The width of the inner wall of the slide groove 100 is adapted to the width of the outer wall of the plug-in plates 20. The top of the plug-in plates 20 is welded and fixed to the bottom of the top cover 2.

[0046] In the present invention, the top cover 2 is plugged into and matched with the baffle 10 with the cooperation of the plug plate 20, which increases the stability of the combined installation. At the same time, the bottom of the plug plate 20 is close to the U-shaped block 32, thereby limiting the position of the U-shaped block 32 and preventing the U-shaped block 32 from moving upward, causing the U-shaped block 32 to detach from the slide rod 12 and affect the horizontal movement of the filter frame plate 3.

[0047] Furthermore, screw holes 200 are provided on the outer wall of the inserting plate 20 , and fastening bolts 201 are provided in the screw holes 200 . Positioning holes 101 are provided on the outer wall of the baffle 10 at positions corresponding to the screw holes 200 .

[0048] In the present invention, the fastening bolt 201 passes through the positioning hole 101 and is threadedly connected to the screw hole 200, so as to achieve positional fixation of the inserting plate 20 and the baffle 10, thereby increasing the stability of the installation.

[0049] Specifically, a slide rod 12 is symmetrically arranged between the two baffles 10, and a U-shaped block 32 is provided on both sides of the filter frame plate 3 corresponding to the slide rod 12. The two ends of the slide rod 12 are respectively welded and fixed to the baffle 10, and the width of the outer wall of the slide rod 12 is adapted to the width of the inner wall of the slot on the U-shaped block 32.

[0050] In the present invention, the cooperation of the slide rod 12 helps the U-shaped clamping block 32 to be stably engaged, thereby achieving position limitation of the filter frame plate 3 and helping to lift the filter frame plate 3 .

[0051] It should be noted that the U-shaped blocks 32 on the same side are connected by a binding belt 320 . A through slot 11 is provided on the front surface of the chassis 1 near the bottom, and a storage box 110 is provided in the through slot 11 .

[0052] Secondly, with the cooperation of the restraining belt 320, the rightmost filter frame plate 3 moves to the right with the cooperation of the hydraulic cylinder 4, thereby realizing the linkage and sequential separation of multiple filter frame plates 3, which is convenient for the discharge of the intermediate filter residue.

[0053] Furthermore, the width of the inner wall of the through groove 11 is adapted to the width of the outer wall of the storage box 110. The outer wall of the storage box 110 is symmetrically provided with a pull handle 111, which is welded and fixed to the storage box 110. The internal space of the storage box 110 is connected to the space below the filter frame plate 3.

[0054] In the present invention, the storage box 110 is provided to help collect the filter residues between the filter frame plates 3, and provides a fulcrum with the cooperation of the pull handle 111, which helps to manually remove and replace the storage box 110 and perform internal cleaning operations.

[0055] When the diaphragm filter press of this embodiment is in use, the user first fixes the baffle 10 with the slide groove 100 and the chassis 1, then fixes the slide bar 12 between the two baffles 10, and then plugs the storage box 110 with the pull handle 111 into the through groove 11, and the filter screen 300 is installed in the filter press tank 30, and the diaphragm 34 with the air flow tube 340 is combined and connected with the filter frame plate 3, and then plugs and cooperates with the multiple filter frame plates 3 with the U-shaped clamping blocks 32 and the slide bar 12, and the U-shaped clamping blocks 32 between the two adjacent filter frame plates 3 are connected by the binding belt 320, and then the air flow tube 340 is combined and connected with the external air intake pipe 14, and the hydraulic cylinder 4 with the pressure plate 40 is fixed to one side of the baffle 10, and the pressure plate 40 is tightly installed and matched with the filter frame plate 3 on the right side, and finally the top cover 2 is plugged into the slide groove 100 through the plug plate 20, and the bottom of the plug plate 20 is close to the U-shaped block 32;

[0056] When it is necessary to perform squeezing and filtering, the telescopic arm of the hydraulic cylinder 4 is manually controlled to extend, and the adjacent filter frame plates 3 are plugged into the annular groove 36 through the snap ring 37 to increase the tightness of the combination between the filter frame plates 3, and the filter press tanks 30 between the two adjacent filter frame plates 3 are connected through the liquid inlet holes 31. Finally, the ends of the liquid inlet pipes 13 are respectively extended to the liquid inlet holes 31 on the corresponding left filter frame plates 3. The liquid inlet pipes 13 transport the external mixed solution to the filter press tank 30 in the filter frame plate 3, and then close one end of the liquid inlet pipe 13. The external high-pressure gas enters the diaphragm 34 through the air inlet pipe 14, and the diaphragm The membrane 34 expands and squeezes the inside of the filter press tank 30, and with the cooperation of the filter screen 300, squeezes and filters. After the squeezing is completed, the telescopic arm of the hydraulic cylinder 4 is controlled to shrink. With the cooperation of the restraining belt 320, the filter frame plates 3 are unfolded in turn, and the filter residue falls into the storage box 110 below under the action of gravity. The overall combination is convenient to install. When the filter frame plate 3 needs to be replaced, the fastening bolts 201 are removed, the top cover 2 is taken out, and the restraining belt 320 is disconnected accordingly, so that the independent filter frame plate 3 can be quickly taken out and replaced. With the cooperation of the top cover 2, the damage to the filter frame plate 3 by dust particles and water droplets above is reduced.

Claims

1. A diaphragm filter press, comprising a housing (1), wherein baffles (10) are provided on both sides of the top of the housing (1), a plurality of filter frame plates (3) are provided between two of the baffles (10), wherein a hydraulic cylinder (4) is provided on the outer wall of the right baffle (10), and characterized in that: A top cover (2) is provided above the chassis (1), and plug plates (20) are symmetrically provided on the lower surface of the top cover (2). Slide grooves (100) are provided on the mutually opposite sides of the baffles (10) at positions corresponding to the plug plates (20). Slide rods (12) are symmetrically provided between the two baffles (10). U-shaped blocks (32) are provided on both sides of the filter frame plate (3) at positions corresponding to the slide rods (12). The U-shaped blocks (32) on the same side are connected by binding belts (320). A through slot (11) is provided on the front surface of the chassis (1) near the bottom, and a storage box (110) is provided in the through slot (11).

2. The diaphragm filter press according to claim 1, characterized in that: The width of the inner wall of the through groove (11) is adapted to the width of the outer wall of the storage box (110), and a pull handle (111) is symmetrically provided on the outer wall of the storage box (110). The pull handle (111) is welded and fixed to the storage box (110), and the internal space of the storage box (110) is communicated with the space below the filter frame plate (3).

3. The diaphragm filter press according to claim 1, characterized in that: The bottom of the baffle (10) is welded and fixed to the chassis (1), the width of the inner wall of the slide groove (100) is matched with the width of the outer wall of the plug plate (20), and the top of the plug plate (20) is welded and fixed to the bottom of the top cover (2).

4. The diaphragm filter press according to claim 3, characterized in that: The outer wall of the inserting plate (20) is provided with screw holes (200), and the screw holes (200) are provided with fastening bolts (201). The outer wall of the baffle (10) is provided with positioning holes (101) at positions corresponding to the screw holes (200).

5. The diaphragm filter press according to claim 1, characterized in that: Both ends of the slide bar (12) are respectively welded and fixed to the baffle (10), and the width of the outer wall of the slide bar (12) is adapted to the width of the inner wall of the upper slot of the U-shaped block (32).

6. The diaphragm filter press according to claim 1, characterized in that: A filter press tank (30) is provided on the left side of the filter frame plate (3), a filter screen (300) is provided on the inner wall of the filter press tank (30), liquid inlet holes (31) are provided on the side walls of the filter frame plate (3), and through holes (310) communicating with the liquid inlet holes (31) are symmetrically provided at the top of the inner wall of the filter press tank (30).

7. The diaphragm filter press according to claim 6, characterized in that: A diaphragm (34) is provided on the right side of the filter frame plate (3), an air flow tube (340) communicating with the interior of the diaphragm (34) is provided on the top of the filter frame plate (3), a liquid storage tank (35) is provided in the middle of the filter frame plate (3), the liquid storage tank (35) and the filter press tank (30) are separated by a filter screen (300), a drain pipe (33) communicating with the liquid storage tank (35) is further provided on the front end surface of the filter frame plate (3), a retaining ring (37) is provided on the left side of the outer wall of the filter frame plate (3), and an annular groove (36) is provided starting from the right side of the outer wall of the filter frame plate (3).

8. The diaphragm filter press according to claim 1, characterized in that: The hydraulic cylinder (4) is fixedly connected to the baffle (10) by screws. A pressing plate (40) is provided at the end of the telescopic arm of the hydraulic cylinder (4). The pressing plate (40) is tightly connected to the right side wall of the filter frame plate (3) on the right side. A liquid inlet pipe (13) is also provided on the baffle (10), and an air inlet pipe (14) is also provided on the baffle (10).

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