A plate and frame filter press device for sludge dewatering

Abstract

The present invention discloses a plate and frame filter press device for sludge dehydration in the technical field of plate and frame filter press, comprising a frame, a filter press body, a filter plate, a pushing member, a movable rod, a pushing plate, a rotating rod, a filter frame plate, a sliding plate, a collecting box, a sliding member and a dehydration-assisting rod; when the pushing member moves, the movable rod maintains its position and causes the rotating rod to rotate through the rotating member, thereby rotating the pushing plate, and cooperating with the filter frame plate to complete the filtration of the sludge; in the present application, by respectively adding a filter frame plate and a collecting box for stones and metal fragments between the pushing member and the filter plate, not only can the metal fragments be recovered for secondary utilization, but also the service life of the filter plate can be extended; in the process of the pushing plate and the pushing plate squeezing the sludge through the filter frame plate, the pushing plate is rotated to a state of being parallel and overlapped with the pushing plate, thereby increasing the contact surface of the pushing, and completing the filtration of the sludge without affecting the filtration of metal fragments and stones, and the collecting box is opened and closed according to the filtration situation.

Description

Technical Field

[0001] The invention relates to the technical field of plate-frame filter press structures, in particular to a plate-frame filter press device for sludge dehydration. Background Art

[0002] The dehydration principle of the plate and frame filter press is to use the pressure difference on both sides of the filter medium (filter cloth) as the driving force, so that the sludge water is forced to pass through the filter medium to form filtrate, while the solid particles are retained on the medium to form filter cake, thereby achieving the purpose of sludge dehydration;

[0003] Specifically, the sludge raw liquid is sent into the filter chamber composed of filter plates and filter frames under pressure. The filtrate passes through the filter cloth under pressure and is discharged from the filter press along the grooves and channels to achieve sludge dehydration. As the filtration process proceeds, the filter cake thickness gradually increases, and the filtration resistance also increases accordingly. When the filter cake reaches a certain thickness or fills the entire frame, the filtration stops.

[0004] The device consists of a series of alternately arranged filter plates and filter frames with filter cloth in between. The sludge enters the filter chamber under the action of a high-pressure pump. The filter cloth acts as a medium, allowing liquid (filtrate) to pass through while blocking solid particles to achieve solid-liquid separation. As the pressure increases, the filtrate is further squeezed and the sludge is compressed into a filter cake, achieving efficient dehydration.

[0005] The existing device lacks a filtering mechanism for stones and metal fragments. Since there are stones, metal fragments and other debris in the sludge, these hard debris can easily damage the filter plate during the filter pressing process, causing the filter plate to be damaged, thereby affecting the filtration of the sludge.

[0006] To this end, we propose a plate and frame filter press device for sludge dewatering. Summary of the invention

[0007] The object of the present invention is to provide a plate and frame filter press device for sludge dewatering to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides a plate-and-frame filter press device for sludge dehydration, comprising a frame and a filter press body, wherein a filter plate is arranged in the filter press body, an injection pipe and a conduit are arranged at both ends of the filter press body, and a pusher is arranged on the frame and penetrates into the filter press body;

[0009] It also includes a rotating member and a movable rod movably sleeved with the end of the pushing member, a pushing plate rotatably connected to the movable rod, a rotating rod rotatably connected to the pushing member, a filter frame plate movably provided in the middle of the filter press body, a sliding plate rotatably connected to the bottom of the filter frame plate, a collection box connected to the bottom of the filter press body, the sliding plate and the box opening of the collection box are sealed, a sliding member is provided at the end of the movable rod, and the inside of the filter frame plate is rotatably connected through the sliding member to help the rod to be removed;

[0010] Preferably, when the pushing member moves, the movable rod maintains its position and causes the rotating rod to rotate through the rotating member, thereby rotating the pushing plate and cooperating with the filter frame plate to complete the sludge filtration.

[0011] Preferably, the filter frame plate is composed of a U-shaped plate, a magnetic filter material plate and a filter material mesh plate, the magnetic filter material plate is close to the filter plate, and the opening of the filter frame plate is located at the bottom.

[0012] Preferably, the rotating member includes a first connecting rod and a second connecting rod, the end of the movable rod is fixedly connected to a push plate rotatably connected to the push plate, one end of the first connecting rod is rotatably connected to the push plate, the other end of the first connecting rod is rotatably connected to a matching rod, one end of the second connecting rod is fixedly connected to the push plate, the other end of the second connecting rod is rotatably connected to a rotation shaft, the rotating rod passes through the rotation shaft, and the pushing member is provided with a matching member that enables the matching rod and the rotating rod to rotate synchronously.

[0013] Preferably, the matching member includes two mutually meshing first gears rotatably connected to the telescopic end of the pushing member, and the matching rod and the rotating rod are respectively connected and fixed to the two first gears.

[0014] Preferably, the sliding member includes two self-rotating rods rotatably connected to the U-shaped plate, the ends of the self-rotating rods are fixedly connected to the second gear, the other ends of the self-rotating rods are fixedly connected to the first bevel gear, the middle part of the filter frame plate is rotatably connected to the second bevel gear fixedly connected to the auxiliary release rod, the second bevel gear is meshingly connected to the first bevel gear, and the second gear is provided with a limit member for rotating the filter frame plate.

[0015] Preferably, the limiting member includes a limiting frame plate which is obliquely distributed and fixedly connected to the filter press body, a sliding column is rotatably connected to the central axis of the second gear, the sliding column slides in the limiting frame plate, a compression member which is obliquely distributed is hung between the end of the sliding column and the filter press body, the sliding plate slides horizontally on the inner wall of the filter frame plate, and a movable part is provided between the filter frame plate and the pushing member.

[0016] Preferably, the movable part includes a sleeve rod which is sleeved on the movable rod and is in pressure contact with the filter frame plate, a compression spring is provided between the sleeve rod and the movable rod, and a connecting rod is fixedly connected to the end of the sleeve rod, and one of the connecting rod ends is fixedly connected to a toothed plate meshing with the second gear.

[0017] Preferably, an adsorption device is provided at the bottom of the collection box.

[0018] Preferably, a wedge-shaped block that is in pressing contact with the filter frame plate is fixedly connected to the bottom of the push plate, and a blocking plate is fixedly connected to the inside of the filter press body and the sliding plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In this application, by respectively adding a filter frame plate and a collection box for stones and metal fragments between the pusher and the filter plate, not only can the metal fragments be recovered for secondary use, but also the service life of the filter plate can be extended;

[0021] When the push plate and the push plate squeeze the sludge through the filter frame, the push plate is rotated to a state of being parallel and overlapping with the push plate, increasing the contact surface of the push, and completing the sludge filtration without affecting the filtration of metal fragments and stones;

[0022] Due to the large force during the filtration process, some metal fragments and stones are attached to the filter frame and are not easy to fall off. The auxiliary release rod can help some metal fragments and stones fall off and enter the collection box, and the sliding plate can seal the collection box in time to deal with metal fragments and stones in time. The collection box can be opened and closed according to the filtration situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the filter press body of the present invention;

[0025] Figure 3 It is a schematic diagram of the filter press body and its internal structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the separation of the filter press body and its internal structure of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the rotating member and the filter frame plate of the present invention;

[0028] Figure 6 It is a schematic diagram of the disassembly of the rotating part structure of the present invention;

[0029] Figure 7It is a schematic diagram of the matching structure of the filter frame plate and the sliding plate of the present invention;

[0030] Figure 8 It is a schematic side view of the matching structure of the filter frame plate and the sliding plate of the present invention;

[0031] Fig. 9 It is a schematic diagram of the split structure of the filter frame plate of the present invention;

[0032] Fig.10 It is a schematic diagram of the internal structure of the filter frame plate of the present invention;

[0033] Fig.11 It is a schematic diagram of the matching structure of the self-rotating rod and the release-assisting rod of the present invention.

[0034] In the figure: 1, frame; 2, filter press body; 3, filter plate; 4, push member; 5, movable rod; 6, push plate; 7, rotating rod; 801, U-shaped plate; 802, magnetic filter plate; 803, filter screen plate; 9, sliding plate; 10, collecting box; 11, auxiliary release rod; 12, first connecting rod; 13, second connecting rod; 14, push plate; 15, matching rod; 16, self-rotating shaft; 17, first gear; 18, self-rotating rod; 19, second gear; 20, first bevel gear; 21, second bevel gear; 22, limit frame plate; 23, sliding column; 24, compression member; 25, sleeve rod; 26, compression spring; 27, connecting rod; 28, tooth plate; 29, wedge block; 30, blocking plate. DETAILED DESCRIPTION

[0035] 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 described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 11 The present invention provides a plate-and-frame filter press device for sludge dehydration, comprising a frame 1 (the frame 1 is provided with other auxiliary devices matching the filter press body 2, which is conventional technology) and a filter press body 2, a filter plate 3 is provided in the filter press body 2, and injection pipes and conduits for conveying sludge are respectively provided at both ends of the filter press body 2 and located on both sides of the filter plate 3, and a pushing member 4 (preferably a cylinder device) is provided on the frame 1 and penetrates into the filter press body 2;

[0037] It also includes a rotating member and a movable rod 5 movably sleeved with the end of the pushing member 4, a pushing plate 6 rotatably connected to the movable rod 5, a rotating rod 7 rotatably connected to the pushing member 4, a filter frame plate movably provided in the middle of the filter press body 2, a sliding plate 9 rotatably connected to the bottom of the filter frame plate, a collecting box 10 connected to the bottom of the filter press body 2, the sliding plate 9 and the box opening of the collecting box 10 are sealed, a sliding member is provided at the end of the movable rod 5, and the inside of the filter frame plate is rotatably connected to a rod 11 that helps to remove the filter frame plate through the sliding member;

[0038] When the push member 4 moves, the movable rod 5 maintains its position and rotates the rotating rod 7 through the rotating member, thereby rotating the push plate 6 and cooperating with the filter frame plate to complete the sludge filtration;

[0039] When the mud enters the filter press body 2, the telescopic end of the pusher 4 is slowly moved. At this time, the movable rod 5 and the push plate 14 are fixed, and the rotating member is movable, so that the push plate 6 is rotated to a vertical state, which is convenient for squeezing and pushing the mud;

[0040] Then, the telescopic end of the pusher 4 continues to move slowly, and the bottom of the push plate 14 is close to the box opening of the collection box 10. At this time, the filter frame plate is still kept in a vertical state, and the slurry is filtered out. Most of the stones and metal fragments enter the collection box 10, and some of the stones and metal fragments are attached to the filter material mesh plate 803.

[0041] Then, the telescopic end of the push member 4 continues to move slowly, at this time, the effect of the compression spring 26 is overcome, the push plate 6 and the push plate 14 move, the push plate 14 and the telescopic end of the push member 4 do not move relatively, the sleeve rod 25 does not move, the movable rod 5 moves along the sleeve rod 25, the filter frame does not rotate, and the push plate 14 and the push plate 6 continue to squeeze the mud;

[0042] Then, the telescopic end of the push member 4 continues to move slowly, and at this time, the action of the compression member 24 is overcome, the movable rod 5, the push plate 14, the sleeve rod 25 and the push plate 6 all move, the sliding member moves, and the remaining stones and metal fragments in the mud are attached to the filter frame plate, and the treatment effect of the filter frame plate is basically completed. The end of the sleeve rod 25 presses the filter frame plate, the filter frame plate rotates, the sliding plate 9 slides, and the filter frame plate rotates in the direction of the sliding plate 9;

[0043] While the filter frame plate rotates, the second gear 19 rotates a certain angle to make the auxiliary release rod 11 rotate a certain angle, so as to facilitate the partial stones and metal fragments on the filter material mesh plate 803 to fall off into the collection box 10, and then the second gear 19 disengages from the tooth plate 28, and the auxiliary release rod 11 does not rotate, that is, the auxiliary release rod 11 only rotates a certain angle, not a full rotation, and the rotation of a certain angle can complete the shedding of some stones and metal fragments;

[0044] Finally, the rotating filter frame plate fits the sliding plate 9, and the sliding sliding plate 9 blocks the box opening of the collection box 10, and continues to squeeze the treated mud through the filter plate 3, while promptly processing the stones and metal fragments in the closed collection box 10;

[0045] The pushing member 4 is reset and moved, and under the action of the compression member 24 and the rotating member, the entire device is reset;

[0046] In the present application, by respectively adding a filter frame plate and a collection box 10 for stones and metal fragments between the pusher 4 and the filter plate 3, not only can the metal fragments be recovered for secondary use, but also the service life of the filter plate 3 can be extended;

[0047] In the process of pushing the sludge through the filter frame plate by the push plate 6 and the push plate 14, the push plate 6 is rotated to a state of being parallel and overlapping with the push plate 14, so as to increase the contact surface of the push, and complete the sludge filtration without affecting the filtration of metal fragments and stones;

[0048] Due to the large force during the filtration process, some metal fragments and stones are attached to the filter frame and are not easy to fall off. The auxiliary release rod 11 is used to facilitate the fall of some metal fragments and stones into the collection box 10, and the sliding plate 9 blocks the collection box 10 in time to deal with the metal fragments and stones in time. The collection box 10 is opened and closed according to the filtration situation.

[0049] The filter frame plate is composed of a U-shaped plate 801, a magnetic filter plate 802 and a filter mesh plate 803. The magnetic filter plate 802 is close to the filter plate 3, and the opening of the filter frame plate is located at the bottom. In the present application, the magnetic filter plate 802 and the filter mesh plate 803 are spaced apart to facilitate the movement of the auxiliary removal rod 11, and the filter mesh plate 803 has a certain elasticity. When the auxiliary removal rod 11 moves, the grid gap of the filter mesh plate 803 changes, thereby facilitating the shedding of some metal fragments and stones. On the one hand, the metal fragments are attached to the filter mesh plate 803 under the magnetic effect of the magnetic filter plate 802, and on the other hand, the metal fragments do not directly contact the magnetic filter plate 802.

[0050] The rotating member includes a first connecting rod 12 and a second connecting rod 13. The end of the movable rod 5 is fixedly connected to a push plate 14 rotatably connected to the push plate 6. One end of the first connecting rod 12 is rotatably connected to the push plate 6. The other end of the first connecting rod 12 is rotatably connected to a matching rod 15. One end of the second connecting rod 13 is connected and fixed to the push plate 14. The other end of the second connecting rod 13 is rotatably connected to a rotation shaft 16. The rotation rod 7 passes through the rotation shaft 16. The pushing member 4 is provided with a matching member that enables the matching rod 15 and the rotating rod 7 to rotate synchronously.

[0051] When the mud enters the filter press body 2, the telescopic end of the pushing member 4 is first moved slowly, and the end of the movable rod 5 is sleeved with the telescopic end. Due to the action of the compression member 24, the movable rod 5 and the push plate 14 are stationary at this time, and the telescopic end of the pushing member 4 moves, so that the matching rod 15 and the rotating rod 7 move with the movement of the telescopic end of the pushing member 4. At the same time, the matching rod 15 and the rotating rod 7 rotate synchronously under the action of the matching member. Under the action of the first connecting rod 12, the pushing plate 6 is rotated to a vertical state, thereby increasing the area of ​​the extruded contact mud and facilitating the extrusion and pushing of the mud.

[0052] The matching member includes two mutually meshing first gears 17 rotatably connected to the telescopic end of the pushing member 4, and the matching rod 15 and the rotating rod 7 are respectively connected and fixed to the two first gears 17;

[0053] The telescopic end of the push member 4 moves slowly (when the telescopic end of the push member 4 moves relative to the movable rod 5), driving the two first gears 17 to move synchronously and approach the filter frame plate. At this time, the push plate 14 and the movable rod 5 are stationary. Under the action of the second connecting rod 13, the rotating rod 7 rotates and slides along the end of the second connecting rod 13, and the first gear 17 rotates, causing the other gear to rotate at the same time, driving the matching rod 15 to rotate synchronously. The efficiency of the matching rod 15 is consistent with the efficiency of the rotating rod 7. The only difference between the two rotations is that the clockwise direction of the rotation is opposite.

[0054] The matching rod 15 rotates synchronously, driving the first connecting rod 12 to push the plate 6 to rotate, so that the push plate rotates to a vertical state, and the push plate 6 overlaps with the push plate 14 to increase the squeezing area of ​​the mud;

[0055] When the pushing plate 6 and the pushing plate 14 are overlapped, the effect of the compression spring 26 is overcome, and the telescopic end of the pushing member 4 and the movable rod 5 do not move relatively (at this time, the end of the movable rod 5 contacts the limiting ring inside the telescopic end of the pushing member 4), that is, the movable rod 5 moves synchronously with the telescopic end of the pushing member 4.

[0056] The sliding member includes two self-rotating rods 18 rotatably connected to the U-shaped plate 801, the ends of the self-rotating rods 18 are fixedly connected to the second gear 19, the other ends of the self-rotating rods 18 are fixedly connected to the first bevel gear 20, the middle part of the filter frame is rotatably connected to the second bevel gear 21 connected and fixed to the auxiliary stripping rod 11, the second bevel gear 21 is meshed with the first bevel gear 20, and the second gear 19 is provided with a limiter for rotating the filter frame;

[0057] Then, the telescopic end of the pushing member 4 continues to move slowly, and the action of the compression member 24 is overcome. The movable rod 5, the push plate 14, the sleeve rod 25 and the push plate 6 are all moved, and the sliding member is active. Under the action of the limit member and the movable member, the filter frame is rotated, so that the rotation rod 18 rotates a certain angle relative to the U-shaped plate 801, driving the first bevel gear 20 to rotate, thereby causing the second bevel gear 21 and the auxiliary stripping rod 11 to rotate, so that the stones and metal fragments attached to the filter frame fall into the collection box 10.

[0058] The limiting member includes a limiting frame plate 22 which is tilted and fixedly connected to the filter press body 2. A sliding column 23 is rotatably connected to the central axis of the second gear 19. The sliding column 23 slides in the limiting frame plate 22. An obliquely distributed compression member 24 is hung between the end of the sliding column 23 and the filter press body 2. The sliding plate 9 slides horizontally on the inner wall of the filter frame plate. A movable member is provided between the filter frame plate and the pushing member 4.

[0059] When the sleeve rod 25 moves and presses the filter frame, the slide column 23 slides along the limit frame 22, causing the filter frame to rotate. At the same time, the compression member 24 tilts, and the sliding plate 9 slides horizontally. The rotating filter frame gradually fits the sliding plate 9. At the same time, the auxiliary stripping rod 11 rotates, causing the stones and metal fragments on the filter frame to slide into the collection box 10.

[0060] When the sliding plate 9 moves to completely block the box opening of the collection box 10, the filter frame plate is completely horizontally attached to the sliding plate 9, and the push plate 14 slides above the filter frame plate to continue squeezing the treated mud through the filter plate 3, while promptly processing the stones and metal fragments in the closed collection box 10.

[0061] The movable member includes a sleeve rod 25 sleeved on the movable rod 5 and in pressure contact with the filter frame plate, a compression spring 26 is provided between the sleeve rod 25 and the movable rod 5, and a connecting rod 27 is fixedly connected to the end of the sleeve rod 25, and a tooth plate 28 meshing with the second gear 19 is fixedly connected to one end of the connecting rod 27;

[0062] When the sleeve rod 25 moves and presses against the filter frame plate, the tooth plate 28 and the second gear 19 are meshed, and the tooth plate 28 drives the second gear 19 to rotate at a certain angle, thereby driving the self-rotating rod 18 to rotate on the U-shaped plate 801, so that the auxiliary stripping rod 11 rotates;

[0063] When the filter frame plate rotates, the second gear 19 is disengaged from the tooth plate 28, and the auxiliary stripping rod 11 stops rotating.

[0064] An adsorption device is provided at the bottom of the collection box 10 . When the sliding plate 9 slides to block the collection box 10 , the adsorption device is activated to process the stones and metal fragments in the collection box 10 .

[0065] A wedge block 29 is fixedly connected to the bottom of the push plate 14 and is in contact with the filter frame. A blocking plate 30 is fixedly connected to the inside of the filter press body 2 and the sliding plate 9. The blocking plate 30 located inside the filter press body 2 and the blocking plate 30 located on the sliding plate 9 ensure that when the filter frame is in a vertical state, stones and metal fragments in the mud are prevented from passing through the gap between the filter frame and the filter press body 2.

[0066] Furthermore, the arrangement of the two blocking plates 30 does not affect the rotation of the filter frame plate and the sliding of the sliding plate 9 .

[0067] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plate-and-frame filter press device for sludge dewatering, comprising: A frame and a filter press body, wherein a filter plate is arranged in the filter press body, an injection pipe and a conduit are respectively arranged at both ends of the filter press body and are located on both sides of the filter plate, and a pushing member is arranged on the frame and penetrates into the filter press body; It is characterized by further comprising: A rotating member and a movable rod movably sleeved with the end of the pushing member, a pushing plate rotatably connected to the movable rod, a rotating rod rotatably connected to the pushing member, a filter frame plate movably provided in the middle of the filter press body, a sliding plate rotatably connected to the bottom of the filter frame plate, a collecting box connected to the bottom of the filter press body, a sealing fit between the sliding plate and the box opening of the collecting box, a sliding member provided at the end of the movable rod, and a rotatable connection inside the filter frame plate through the sliding member to help the rod to be removed; When the pushing member moves, the movable rod maintains its position and causes the rotating rod to rotate through the rotating member, thereby rotating the pushing plate and cooperating with the filter frame plate to complete the sludge filtration; The filter frame plate is composed of a U-shaped plate, a magnetic filter material plate and a filter material mesh plate, the magnetic filter material plate is close to the filter plate, and the opening of the filter frame plate is located at the bottom; The filter screen has a certain elasticity, and the mesh gap of the filter screen changes when the auxiliary release rod moves; The rotating member includes a first connecting rod and a second connecting rod, the end of the movable rod is fixedly connected to a push plate rotatably connected to the push plate, one end of the first connecting rod is rotatably connected to the push plate, the other end of the first connecting rod is rotatably connected to a matching rod, one end of the second connecting rod is fixedly connected to the push plate, the other end of the second connecting rod is rotatably connected to a rotation shaft, the rotating rod passes through the rotation shaft, and the pushing member is provided with a matching member that enables the matching rod and the rotating rod to rotate synchronously.

2. A plate-and-frame filter press device for sludge dehydration according to claim 1, characterized in that: The matching member includes two mutually meshing first gears which are rotatably connected to the telescopic end of the pushing member, and the matching rod and the rotating rod are respectively connected and fixed to the two first gears.

3. A plate-and-frame filter press device for sludge dehydration according to claim 2, characterized in that: The sliding member includes two self-rotating rods rotatably connected to the U-shaped plate, the ends of the self-rotating rods are fixedly connected to the second gear, the other ends of the self-rotating rods are fixedly connected to the first bevel gear, the middle part of the filter frame plate is rotatably connected to the second bevel gear fixedly connected to the auxiliary release rod, the second bevel gear is meshed with the first bevel gear, and the second gear is provided with a limiter for rotating the filter frame plate.

4. A plate-and-frame filter press device for sludge dehydration according to claim 3, characterized in that: The limiting member includes a limiting frame plate which is obliquely distributed and fixedly connected to the filter press body; a sliding column is rotatably connected to the central axis of the second gear; the sliding column slides in the limiting frame plate; a compression member which is obliquely distributed is hung between the end of the sliding column and the filter press body; the sliding plate slides horizontally on the inner wall of the filter frame plate; and a movable member is provided between the filter frame plate and the pushing member.

5. A plate-and-frame filter press device for sludge dehydration according to claim 4, characterized in that: The movable part includes a sleeve rod which is sleeved on the movable rod and is in pressure contact with the filter frame plate. A compression spring is provided between the sleeve rod and the movable rod. A connecting rod is fixedly connected to the end of the sleeve rod, and one of the ends of the connecting rod is fixedly connected to a toothed plate meshing with the second gear.

6. A plate-and-frame filter press device for sludge dehydration according to claim 1, characterized in that: An adsorption device is arranged at the bottom of the collecting box.

7. A plate-and-frame filter press device for sludge dehydration according to claim 1, characterized in that: A wedge-shaped block that is in press contact with the filter frame plate is fixedly connected to the bottom of the push plate, and a blocking plate is fixedly connected to the inside of the filter press body and the sliding plate.

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