A plate filter press for alkali residue slurry

Abstract

This invention discloses a plate filter press for alkali residue slurry, belonging to the technical field of filter press equipment. The invention includes a frame, a movable pressure plate, several filter plates, a filter plate separation assembly, and a cleaning scraper. A rotating belt drives the separation baffles to rotate cyclically. During the movement of the separation baffles, they contact the lifting wedges located below the movable connecting block and drive the corresponding filter plates to move, thereby achieving the separation of the filter plates. Multiple separation baffles automatically circulate and simultaneously separate the filter plates, reducing the time required for the separation process and improving work efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of filter press equipment, and more specifically, it relates to a plate filter press for alkali residue slurry. Background Technology

[0002] A plate filter press, also known as a plate and frame filter press, is widely used in industries such as chemical engineering due to its large filtration area, high flow rate, and wide applicability. It consists of alternating plates and frames, with filter cloth covering both sides of the plates. A pressing device clamps the plates and frames together, forming a filter chamber. Small holes are located at the same position at the top center of each plate and frame, creating a channel after pressing. Sludge pressurized to 0.2–0.4 MPa enters the filter chamber through this channel. Grooves are engraved on the surface of the filter plates, and channels are drilled at the bottom for filtrate discharge. Under pressure, the filtrate passes through the filter cloth and flows along the grooves and channels out of the filter press, thus dewatering the material.

[0003] Chinese patent application CN117122959A discloses a self-cleaning plate filter press, including a movable frame, a base frame, a front support, a rear support, a lifting drive mechanism, a swing seat, brushes, nozzles, an elastic reset assembly, and a top pressure wheel. The lifting drive mechanism drives the base frame to move up and down along the movable frame. The lower parts of the front and rear supports are both hinged with swing seats facing the cleaning area. The brushes are mounted on the lower support, the nozzles are mounted on the middle support, and the top pressure wheel is mounted on the upper support. The elastic reset assembly is used to hold the swing seat in a first state. After the top pressure wheel is compressed, the distance between the brushes on both sides is different in the first and second states. The lifting structure drives the cleaning body to move up and down, and the swing cleaning structure reduces damage to the filter plates during cleaning.

[0004] The aforementioned patents and existing technologies have the following problems:

[0005] When cleaning the filter cake after filtration, the pressing device must first be loosened, and then the manual filter press plates and frames must be separated manually. The separation speed is slow, and the spacing between the separated filter press plates is different. If the spacing is too small, the cleaning device will not be able to enter between the filter press plates for cleaning, which will cause inconvenience to the subsequent cleaning of the filter press plates. Some filter cake has a high water content and is difficult to clean by swinging on the filter screen. It is necessary to manually remove the filter cake with tools later. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the problems in related technologies, this invention proposes a plate filter press for alkali residue slurry. It features multiple automatically circulating separation baffles that simultaneously separate the filter press plates, reducing separation time, ensuring proper spacing between plates for easy subsequent cleaning, and improving work efficiency. The cleaning scraper cleans the filter screens on both sides of the filter press plates as it moves downwards, preventing filter residue from adhering to the screens and affecting subsequent filtration. It also removes adhering filter residue, reducing manual cleaning processes and improving efficiency. This invention solves the problems of slow filter plate separation speed, inconsistent spacing between separated plates (too small a spacing prevents the cleaning device from entering the gaps), and the need for manual removal of filter residue with tools due to its high water content.

[0008] (II) Technical Solution

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a plate filter press for alkali residue slurry, comprising a frame, a movable pressure plate, a plurality of filter plates, a filter plate separation assembly, and cleaning scrapers. The movable pressure plate is located at one end of the frame and can move horizontally on the frame. When the movable pressure plate moves and contacts the filter plates, the filter plates move and come into contact with adjacent filter plates. Two cleaning scrapers are provided above the filter plates, and the two cleaning scrapers contact both sides of one of the filter plates during vertical movement.

[0010] The filter plate separation assembly includes several separation units, several moving units, and a rotating belt. Each separation unit includes a moving connecting block, a lifting wedge, and a wedge stop bar. The wedge stop bar contacts the lifting wedge adjacent to the side away from the moving pressure plate.

[0011] The moving unit includes a separation baffle, and the moving unit is distributed on the rotating belt; the rotating belt rotates to drive the separation baffle to move, and the separation baffle is located below the moving connecting block;

[0012] The movable connecting block is fixedly connected to the filter press plate. When several filter press plates are in contact, the lifting wedge block closest to the movable press plate moves to below the movable connecting block. The separating baffle moves to contact the lifting wedge block and drives the lifting wedge block to move closer to the movable press plate. The lifting wedge block drives the movable connecting block and the wedge block stop rod to move. The movable connecting block drives the filter press plate to move. When the wedge block stop rod disengages from the adjacent lifting wedge block on the side away from the movable press plate, the adjacent lifting wedge block on the side away from the movable press plate moves to below the movable connecting block.

[0013] Preferably, the separation unit further includes lifting springs, a lifting groove is provided on the lower surface of the movable connecting block, the lifting wedge is slidably installed in the lifting groove, a plurality of lifting springs are fixedly installed on the top of the lifting wedge, the top of the lifting springs is fixedly connected to the top of the inner wall of the lifting groove, the wedge stop is fixedly installed on the side of the movable connecting block away from the movable pressure plate, and a stop moving groove is provided on the side of the movable connecting block close to the movable pressure plate.

[0014] Preferably, a rotating support plate is fixedly installed on one side of the frame, and a separation and movement opening is provided on the rotating support plate. The moving unit further includes a moving connecting rod and a moving limiting block. The separation baffle is disposed on one side of the rotating support plate, and the rotating belt is disposed on the other side of the rotating support plate. The end of the separation baffle away from the moving connecting block is fixedly connected to the moving connecting rod. The moving connecting rod passes through the separation and movement opening and is fixedly connected to the rotating belt. The moving limiting block is fixedly connected to the moving connecting rod, and one end of the moving limiting block is in contact with the rotating support plate.

[0015] Preferably, a filter press drive is fixedly installed at one end of the frame, the output end of the filter press drive is fixedly connected to the movable pressure plate, the movable pressure plate is slidably installed with the frame, a fixed stop is fixedly installed on the side of the movable pressure plate near the rotating support plate, and a fixed stop is fixedly installed on the side of the fixed stop near the stop rod moving groove.

[0016] Preferably, a plurality of cleaning support plates are fixedly installed at the top of the frame, and a cleaning mounting plate is fixedly installed at the top of the cleaning support plates. A cylinder moving hole is opened on the upper surface of the cleaning mounting plate, and two slider moving grooves are opened on the lower surface of the cleaning mounting plate. A cleaning moving plate is arranged below the cleaning mounting plate, and two cleaning cylinders are fixedly installed on the upper surface of the cleaning moving plate. The output end of the cleaning cylinder passes through the cleaning moving plate and is fixedly connected to the cleaning scraper.

[0017] Preferably, a rotating lead screw is rotatably installed in each of the slider moving slots, and a slider is sleeved on the rotating lead screw. The slider is slidably installed in the slider moving slot, and the bottom end of the slider is fixedly connected to the upper surface of the cleaning moving plate. Two cleaning motors are fixedly installed at one end of the cleaning mounting plate, and the drive shaft of the cleaning motor passes through the cleaning mounting plate and is fixedly connected to the rotating lead screw.

[0018] Preferably, a rotating mounting frame is provided on the side of the rotating belt away from the rotating support plate. Two rotating motors are fixedly mounted on the upper surface of the rotating mounting frame. The rotating motor drive shafts are fixedly connected to rotating rollers, and the rotating belt is connected between the rotating rollers.

[0019] Preferably, the inner contour of the moving groove of the stop bar is the same size as the outer contour of the wedge stop bar and the fixed stop bar.

[0020] Preferably, a rubber pad is fixedly installed on the side of the cleaning scrapers that are close to each other.

[0021] Preferably, a movable filter cake collection box is provided below the filter press plate.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, the present invention provides a plate filter press for alkali residue slurry, which has the following beneficial effects:

[0024] 1. The rotating belt drives the separation baffle to rotate in a cycle. During the movement of the separation baffle, it contacts the lifting wedge block located below the moving connecting block and drives the corresponding filter press plate to move, thereby achieving the separation of the filter press plate. Multiple separation baffles move automatically in a cycle and separate the filter press plate simultaneously, reducing the time used for the separation process, ensuring the spacing between the filter press plates, facilitating subsequent cleaning, and improving work efficiency.

[0025] 2. During the movement of the filter press plate, the cleaning motor drives the rotating screw to rotate, which in turn moves the slider. The slider's movement drives the cleaning moving plate, which in turn moves the cleaning scraper. This ensures that the cleaning scraper is always positioned directly above the filter press plate during the movement. The cleaning cylinder drives the cleaning scraper downwards, cleaning the filter screens on both sides of the filter press plate during this downward movement. This prevents filter residue from adhering to the filter screens and affecting subsequent filtration operations. The cleaning of any adhering filter residue reduces manual cleaning processes and improves work efficiency.

[0026] 3. There are gaps between multiple sets of separation baffles, which allow sufficient cleaning time for the cleaning process during the separation process, preventing the cleaning effect from being reduced due to insufficient cleaning time and improving the applicability of the equipment.

[0027] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is one of the overall three-dimensional structural schematic diagrams of the present invention;

[0030] Figure 2This is a schematic cross-sectional view of the overall structure of the present invention;

[0031] Figure 3 This is the second schematic diagram of the overall three-dimensional structure of the present invention;

[0032] Figure 4 For the present invention Figure 3 A schematic diagram of the structure at point A;

[0033] Figure 5 This is the third schematic diagram of the overall three-dimensional structure of the present invention;

[0034] Figure 6 For the present invention Figure 5 A schematic diagram of the structure at point B;

[0035] Figure 7 This is the fourth schematic diagram of the overall three-dimensional structure of the present invention;

[0036] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at point C;

[0037] Figure 9 This is the fifth schematic diagram of the overall three-dimensional structure of the present invention;

[0038] Figure 10 For the present invention Figure 9 A schematic diagram of the structure at point D.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 1. Frame; 2. Movable pressure plate; 3. Filter press plate; 4. Filter plate separation assembly; 41. Separation unit; 411. Movable connecting block; 412. Lifting wedge block; 413. Wedge block stop bar; 414. Lifting spring; 415. Lifting groove; 416. Stop bar moving groove; 42. Moving unit; 421. Separation baffle; 422. Movable connecting rod; 423. Movable limiting block; 401. Rotating belt; 402. Rotating support plate; 403. Separation moving port; 404. Rotating mounting frame; 405. Rotating motor; 5. Cleaning scraper; 6. Filter press drive component; 7. Fixed stop bar; 8. Cleaning support plate; 9. Cleaning mounting plate; 10. Cleaning moving plate; 11. Cleaning cylinder; 12. Rotating screw; 13. Cleaning motor; 14. Movable filter cake collection box. Detailed Implementation

[0041] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0042] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the invention.

[0043] Please see Figure 1 , Figure 3 , Figure 6 , Figure 8 As shown, the present invention is a plate filter press for alkaline residue slurry, including a frame 1, a movable pressure plate 2, several filter plates 3, a filter plate separation assembly 4, and cleaning scrapers 5. The movable pressure plate 2 is located at one end of the frame 1 and can move horizontally on the frame 1. When the movable pressure plate 2 moves and contacts the filter plate 3, the filter plate 3 moves and comes into contact with the adjacent filter plate 3. Two cleaning scrapers 5 are provided above the filter plate 3. During the vertical movement of the two cleaning scrapers 5, they respectively contact the two sides of one filter plate 3.

[0044] The filter plate separation assembly 4 includes several separation units 41, several moving units 42 and a rotating belt 401. The separation unit 41 includes a moving connecting block 411, a lifting wedge block 412 and a wedge block stop bar 413. The wedge block stop bar 413 contacts the lifting wedge block 412 adjacent to the side away from the moving pressure plate 2.

[0045] The moving unit 42 includes a separation baffle 421, and the moving unit 42 is distributed on the rotating belt 401; the rotating belt 401 rotates and moves the separation baffle 421, and the separation baffle 421 is located below the moving connecting block 411;

[0046] The movable connecting block 411 is fixedly connected to the filter plate 3. When several filter plates 3 are in contact, the lifting wedge block 412 closest to the movable pressure plate 2 moves to below the movable connecting block 411. The separating baffle 421 moves to contact the lifting wedge block 412 and drives the lifting wedge block 412 to move closer to the movable pressure plate 2. The lifting wedge block 412 drives the movable connecting block 411 and the wedge block stop rod 413 to move. The movable connecting block 411 drives the filter plate 3 to move. When the wedge block stop rod 413 disengages from the adjacent lifting wedge block 412 on the side away from the movable pressure plate 2, the adjacent lifting wedge block 412 on the side away from the movable pressure plate 2 moves to below the movable connecting block 411.

[0047] Before the filtration operation begins, the movable pressure plate 2 moves horizontally to the other end of the frame 1. During its movement, the movable pressure plate 2 contacts the filter plate 3, causing the filter plate 3 to move and making adjacent filter plates 3 fit together. The lifting wedge block 412 closest to the movable pressure plate 2 moves to below the movable connecting block 411, and the other lifting wedge blocks 412 move to above the movable connecting block 411. After the filtration operation is completed, the movable pressure plate 2 moves horizontally to one end of the frame 1, and the rotating belt 401 rotates, causing several separation baffles 421 to move. During the movement of the separating baffle 421, it contacts the lifting wedge 412 located below the moving connecting block 411 and drives the lifting wedge 412 to move closer to the moving pressure plate 2. The movement of the lifting wedge 412 drives the corresponding moving connecting block 411 to move, and the moving connecting block 411 drives the corresponding filter press plate 3 to move. During the movement of the filter press plate 3, the cleaning scraper 5 moves horizontally synchronously with the filter press plate 3 and moves vertically downwards at the same time, automatically scraping off the filter residue attached to both sides of the filter press plate 3 to prevent the filter residue from adhering to the filter. Online cleaning can affect subsequent filter press operations. Automatic cleaning reduces manual cleaning processes and improves work efficiency. When the filter press plate 3 contacts the moving press plate 2, the lifting wedge 412 moves above the separation baffle 421, disengaging from the separation baffle 421, and the filter press plate 3 stops moving. When the moving connecting block 411 closest to the moving press plate 2 moves the corresponding wedge block stop 413 to disengage from the adjacent lifting wedge 412, the adjacent lifting wedge 412 moves to the moving connecting block 411. Below block 411, and after contacting other moving separation baffles 421, the lifting wedge 412 moves, driving the corresponding filter press plate 3 to move. During the movement, the cleaning scraper 5 cleans the filter press plate 3. When the filter press plate 3 moves to re-fit with the adjacent filter press plate 3, the lifting wedge 412 moves above the separation baffle 421 and disengages from the separation baffle 421. This process is repeated to automatically complete the separation of the filter press plate 3, reducing the separation work of workers, improving work efficiency, and improving the applicability of the equipment.

[0048] Please see Figure 3 , Figure 4 , Figure 6 Furthermore, the separation unit 41 also includes lifting springs 414, a lifting groove 415 is provided on the lower surface of the movable connecting block 411, a lifting wedge 412 is slidably installed in the lifting groove 415, a number of lifting springs 414 are fixedly installed on the top of the lifting wedge 412, the top of the lifting springs 414 is fixedly connected to the top of the inner wall of the lifting groove 415, and a wedge block stop bar 413 is fixedly installed on the side of the movable connecting block 411 away from the movable pressure plate 2, and a stop bar moving groove 416 is provided on the side of the movable connecting block 411 close to the movable pressure plate 2;

[0049] During the filter press plate 3 pressing and bonding process, the wedge block stop 413 moves into the stop moving groove 416 of the adjacent moving connecting block 411. During the movement, the wedge block stop 413 contacts and squeezes the adjacent lifting wedge block 412, causing the adjacent lifting wedge block 412 to move upward along the lifting groove 415, and the corresponding lifting spring 414 of the lifting wedge block 412 is compressed. When the filter press plate 3 is separated and cleaned, the wedge block stop 413 moves and disengages from the adjacent lifting wedge block 412, the corresponding lifting spring 414 resets, and the adjacent lifting wedge block 412 moves downward.

[0050] Please see Figure 3 , Figure 9 , Figure 10 Furthermore, a rotating support plate 402 is fixedly installed on one side of the frame 1. A separation movement port 403 is provided on the rotating support plate 402. The moving unit 42 also includes a moving connecting rod 422 and a moving limiting block 423. A separation baffle 421 is provided on one side of the rotating support plate 402, and a rotating belt 401 is provided on the other side of the rotating support plate 402. The end of the separation baffle 421 away from the moving connecting block 411 is fixedly connected to the moving connecting rod 422. The moving connecting rod 422 passes through the separation movement port 403 and is fixedly connected to the rotating belt 401. The moving limiting block 423 is fixedly connected to the moving connecting rod 422, and one end of the moving limiting block 423 is in contact with the rotating support plate 402.

[0051] After the filter press operation is completed, the rotating belt 401 rotates and drives several movable connecting rods 422 to move. The movement of the movable connecting rods 422 drives the separation baffle 421 to move. During the movement of the separation baffle 421, it contacts the lifting wedge 412 located below the movable connecting block 411 and drives the lifting wedge 412 to move.

[0052] Please see Figure 1 , Figure 6 Furthermore, a filter press drive 6 is fixedly installed at one end of the frame 1. The output end of the filter press drive 6 is fixedly connected to the movable pressure plate 2. The movable pressure plate 2 is slidably installed with the frame 1. A fixed stop block is fixedly installed on the side of the movable pressure plate 2 near the rotating support plate 402. A fixed stop bar 7 is fixedly installed on the side of the fixed stop block near the stop bar moving groove 416.

[0053] In use, the filter press drive 6 drives the movable pressure plate 2 to move horizontally along the frame 1. When the filter press 3 is in contact with the movable pressure plate 2, the fixed stop bar 7 contacts and squeezes the corresponding lifting wedge 412 of the filter press 3 during the movement process, so that the corresponding lifting wedge 412 moves upward along the lifting groove 415 and finally moves into the stop bar moving groove 416 corresponding to the filter press 3.

[0054] Please see Figure 1 , Figure 2 , Figure 8Furthermore, a number of cleaning support plates 8 are fixedly installed at the top of the frame 1, and a cleaning mounting plate 9 is fixedly installed at the top of the cleaning support plate 8. The upper surface of the cleaning mounting plate 9 is provided with a cylinder moving hole, and the lower surface of the cleaning mounting plate 9 is provided with two slider moving grooves. A cleaning moving plate 10 is provided below the cleaning mounting plate 9, and two cleaning cylinders 11 are fixedly installed on the upper surface of the cleaning moving plate 10. The output end of the cleaning cylinder 11 passes through the cleaning moving plate 10 and is fixedly connected to the cleaning scraper 5.

[0055] When in use, when the filter press plate 3 is separated, the cleaning cylinder 11 drives the cleaning scraper 5 to move downward, and the cleaning scraper 5 cleans the filter screens on both sides of the filter press plate 3 during the downward movement.

[0056] Please see Figure 2 Furthermore, a rotating screw 12 is rotatably installed in each slider moving groove, and a slider is sleeved on the rotating screw 12. The slider is slidably installed in the slider moving groove, and the bottom end of the slider is fixedly connected to the upper surface of the cleaning moving plate 10. Two cleaning motors 13 are fixedly installed at one end of the cleaning mounting plate 9, and the drive shaft of the cleaning motor 13 passes through the cleaning mounting plate 9 and is fixedly connected to the rotating screw 12.

[0057] In use, the cleaning motor 13 drives the rotating screw 12 to rotate, which in turn moves the slider. The movement of the slider moves the cleaning moving plate 10, which in turn moves the cleaning scraper 5, ensuring that the cleaning scraper 5 is always positioned directly above the filter press plate 3 during the movement process.

[0058] Please see Figure 1 Furthermore, a rotating mounting bracket 404 is provided on the side of the rotating belt 401 away from the rotating support plate 402. Two rotating motors 405 are fixedly mounted on the upper surface of the rotating mounting bracket 404. The drive shaft of the rotating motors 405 is fixedly connected to rotating rollers, and the rotating belt 401 is connected between the rotating rollers.

[0059] In use, the rotating motor 405 drives the rotating roller to rotate, which in turn drives the rotating belt 401 to rotate.

[0060] Please see Figure 10 Furthermore, the inner contour of the groove of the stop bar moving groove 416 is the same size as the outer contour of the wedge block stop bar 413 and the fixed stop bar 7.

[0061] When in use, both the wedge block stop 413 and the fixed stop 7 can move into the stop moving groove 416.

[0062] Please see Figure 8 Furthermore, a rubber pad is fixedly installed on the side of the cleaning scraper 5 that is close to each other;

[0063] When the cleaning scraper 5 is cleaning, the rubber baffle comes into contact with the filter screen of the filter press plate 3 to prevent damage to the filter screen during cleaning.

[0064] Please see Figure 2 Furthermore, a movable filter cake collection box 14 is provided below the filter press plate 3;

[0065] When in use, the movable filter residue collection box 14 collects the scraped filter residue, and is movable for easy processing of the filter residue.

[0066] In summary, by means of the above-mentioned technical solution of the present invention, when using this equipment, before the filter press operation begins, the filter press drive 6 drives the movable pressure plate 2 to move horizontally along the frame 1. The movable pressure plate 2 moves horizontally to the other end of the frame 1. When the movable pressure plate 2 contacts the filter press plate 3 during its movement, it drives the filter press plate 3 to move and makes the adjacent filter press plates 3 fit together. The lifting wedge block 412 closest to the movable pressure plate 2 moves to below the movable connecting block 411, and the other lifting wedge blocks 412 move to above the movable connecting block 411. After the filter press operation is completed, the movable pressure plate 2 moves horizontally to one end of the frame 1, and the rotating motor 405 drives the rotating roller to rotate, thereby driving... The rotating belt 401 rotates, driving several movable connecting rods 422 to move. The movement of the movable connecting rods 422 causes the separation baffle 421 to move. During the movement of the separation baffle 421, it contacts the lifting wedge block 412 located below the movable connecting block 411 and causes the lifting wedge block 412 to move closer to the movable pressure plate 2. The movement of the lifting wedge block 412 causes the corresponding movable connecting block 411 to move, and the movable connecting block 411 causes the corresponding filter plate 3 to move. During the movement of the filter plate 3, the cleaning motor 13 drives the rotating screw 12 to rotate, causing the slider to move. The movement of the slider causes the cleaning moving plate 10 to move. 10. The moving cylinder drives the cleaning scraper 5 to move, ensuring that the cleaning scraper 5 is always directly above the filter press plate 3 during the moving process. The cleaning cylinder 11 drives the cleaning scraper 5 to move downwards. During the downward movement of the cleaning scraper 5, it cleans the filter screens on both sides of the filter press plate 3 to prevent filter residue from adhering to the filter screens and affecting subsequent filtration operations. The cleaning is automatic, reducing manual cleaning processes and improving work efficiency. When the filter press plate 3 contacts the moving pressure plate 2, the lifting wedge 412 moves to above the separation baffle 421, and the lifting wedge 412 disengages from the separation baffle 421, stopping the movement of the filter press plate 3. When the moving connecting block 411 closest to the moving pressure plate 2 moves... After the corresponding wedge block 413 moves and disengages from the adjacent lifting wedge block 412, the adjacent lifting wedge block 412 moves to below the moving connecting block 411 and moves after contacting other moving separation baffles 421. The lifting wedge block 412 drives the corresponding filter press plate 3 to move. During the movement, the cleaning scraper 5 cleans the filter press plate 3. When the filter press plate 3 moves to re-fit with the adjacent filter press plate 3, the lifting wedge block 412 moves above the separation baffle 421 and disengages from the separation baffle 421. This process is repeated to automatically complete the separation of the filter press plate 3, reducing the separation work of workers, improving work efficiency, and improving the applicability of the equipment.

[0067] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] The preferred embodiments of the invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A plate filter press for alkali residue slurry, comprising a frame, a movable pressure plate, a plurality of filter plates, a filter plate separation assembly, and a cleaning scraper, characterized in that: The movable pressure plate is located at one end of the frame. The movable pressure plate can move horizontally on the frame. When the movable pressure plate moves and contacts the filter plate, the filter plate moves and fits against the adjacent filter plates. Two cleaning scrapers are provided above the filter plate. During the vertical movement of the two cleaning scrapers, they respectively contact both sides of one of the filter plates. The filter plate separation assembly includes several separation units, several moving units, and a rotating belt. Each separation unit includes a moving connecting block, a lifting wedge, and a wedge stop bar. The wedge stop bar contacts the lifting wedge adjacent to the side away from the moving pressure plate. The moving unit includes a separation baffle, and the moving unit is distributed on the rotating belt; the rotating belt rotates to drive the separation baffle to move, and the separation baffle is located below the moving connecting block; The movable connecting block is fixedly connected to the filter press plate. When several filter press plates are in contact, the lifting wedge block closest to the movable press plate moves to below the movable connecting block. The separating baffle moves to contact the lifting wedge block and drives the lifting wedge block to move closer to the movable press plate. The lifting wedge block drives the movable connecting block and the wedge block stop rod to move. The movable connecting block drives the filter press plate to move. When the wedge block stop rod disengages from the adjacent lifting wedge block on the side away from the movable press plate, the adjacent lifting wedge block on the side away from the movable press plate moves to below the movable connecting block. The separation unit also includes a lifting spring. A lifting groove is provided on the lower surface of the movable connecting block. The lifting wedge is slidably installed in the lifting groove. Several lifting springs are fixedly installed on the top of the lifting wedge. The top of the lifting springs is fixedly connected to the top of the inner wall of the lifting groove. The wedge stop is fixedly installed on the side of the movable connecting block away from the movable pressure plate. A stop moving groove is provided on the side of the movable connecting block close to the movable pressure plate. A rotating support plate is fixedly installed on one side of the frame, a fixed stop block is fixedly installed on the side of the movable pressure plate near the rotating support plate, and a fixed stop bar is fixedly installed on the side of the fixed stop block near the stop bar moving groove. When the filter press plate is in contact with the moving press plate, the fixed baffle moves and contacts and squeezes the corresponding lifting wedge block of the filter press plate, causing the corresponding lifting wedge block to move upward along the lifting groove and finally move into the baffle moving groove corresponding to the filter press plate.

2. The plate filter press for alkali residue slurry according to claim 1, characterized in that, The rotating support plate has a separation and movement opening. The moving unit also includes a moving connecting rod and a moving limiting block. The separation baffle is disposed on one side of the rotating support plate, and the rotating belt is disposed on the other side of the rotating support plate. The end of the separation baffle away from the moving connecting block is fixedly connected to the moving connecting rod. The moving connecting rod passes through the separation and movement opening and is fixedly connected to the rotating belt. The moving limiting block is fixedly connected to the moving connecting rod, and one end of the moving limiting block is in contact with the rotating support plate.

3. The plate filter press for alkali residue slurry according to claim 1, characterized in that, A filter press drive is fixedly installed at one end of the frame, and the output end of the filter press drive is fixedly connected to the movable pressure plate. The movable pressure plate is slidably installed with the frame.

4. The plate filter press for alkali residue slurry according to claim 3, characterized in that, Several cleaning support plates are fixedly installed at the top of the frame, and a cleaning mounting plate is fixedly installed at the top of the cleaning support plates. A cylinder moving hole is opened on the upper surface of the cleaning mounting plate, and two slider moving grooves are opened on the lower surface of the cleaning mounting plate. A cleaning moving plate is arranged below the cleaning mounting plate, and two cleaning cylinders are fixedly installed on the upper surface of the cleaning moving plate. The output end of the cleaning cylinder passes through the cleaning moving plate and is fixedly connected to the cleaning scraper.

5. A plate filter press for alkali residue slurry according to claim 4, characterized in that, Each slider moving groove is rotatably installed with a lead screw, and a slider is sleeved on the lead screw. The slider is slidably installed in the slider moving groove. The bottom end of the slider is fixedly connected to the upper surface of the cleaning moving plate. Two cleaning motors are fixedly installed at one end of the cleaning mounting plate. The drive shaft of the cleaning motor passes through the cleaning mounting plate and is fixedly connected to the lead screw.

6. A plate filter press for alkali residue slurry according to claim 2, characterized in that, A rotating mounting frame is provided on the side of the rotating belt away from the rotating support plate. Two rotating motors are fixedly mounted on the upper surface of the rotating mounting frame. The rotating motor drive shafts are fixedly connected to rotating rollers, and the rotating belt is connected between the rotating rollers.

7. A plate filter press for alkali residue slurry according to claim 3, characterized in that, The inner contour of the moving groove of the stop bar is the same as the outer contour of the wedge stop bar and the fixed stop bar.

8. A plate filter press for alkali residue slurry according to claim 5, characterized in that, A rubber pad is fixedly installed on the side of the cleaning scraper that is close to each other.

9. A plate filter press for alkali residue slurry according to claim 6, characterized in that, A movable filter cake collection box is provided below the filter press plate.

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