Stacked plate type concentration and dehydration integrated machine

Abstract

This invention discloses a stacked-plate thickening and dewatering integrated machine, relating to the technical field of sludge dewatering equipment. The integrated machine includes a multi-plate filter module, an inlet end plate, an outlet end plate, a pusher plate assembly, and a linear drive assembly. The multi-plate filter module has a sludge dewatering chamber formed by alternating static and dynamic plates. The pusher plate assembly is movably disposed within the sludge dewatering chamber and has a folding mechanism, allowing it to switch between an open and closed state. The linear drive assembly drives the pusher plate assembly to reciprocate back and forth. The pusher plate assembly is in an open state when moving towards the sludge outlet to push sludge; it is in a closed state when moving towards the sludge inlet to reset. Its advantages are that the stacked-plate thickening and dewatering integrated machine of this invention can generate strong mechanical pushing and squeezing dewatering action, solving the problems of difficult sludge propulsion and easy clogging of the chamber, significantly improving dewatering efficiency and equipment operational stability.

Description

Technical Field

[0001] This invention relates to the field of dehydration equipment technology, and in particular to a stacked plate type integrated concentration and dehydration machine. Background Technology

[0002] Currently, the main technologies for sludge thickening and dewatering include centrifugal dewatering, belt filter press dewatering, and screw press dewatering. Among them, the screw press dewatering machine has advantages such as low power consumption, low noise, small size, fully enclosed operation, and good unattended operation. However, its output sludge moisture content is usually high, generally greater than 85%. In order to solve the problem of high moisture content of screw press machines while retaining its advantages, the industry has developed a disc-type sludge thickening and dewatering machine.

[0003] Chinese patent document CN114249516B (authorization announcement date: July 9, 2024) discloses a stacked disc sludge thickening and dewatering machine, including a horizontally placed rectangular casing, at least two multi-disc filter chambers, a screw pump, and a pressure-holding cover plate. The multi-disc filter chambers are sequentially and sealed together to form a through-type closed filter chamber. Both the upper and lower disc grooves are composed of multiple stationary discs and multiple moving discs arranged at intervals. In this patent's technical solution, the moving discs are all fixed to bearing seats via upper and lower eccentric shafts. An eccentric drive assembly consisting of a motor and a reducer drives the eccentric shafts, causing each moving disc to perform an eccentric motion along a circular trajectory. Furthermore, the moving discs are provided with serrations on the side facing the filter bed cavity, designed to push the sludge with low moisture content towards the sludge outlet using these serrations.

[0004] However, in practical applications, this disc-type sludge thickener and dewatering machine has the following defects and shortcomings: It primarily relies on the inlet pressure of the screw pump at the inlet end and the eccentric movement of the moving screen plates, using their serrated edges (similar to rakes) to push the sludge towards the outlet. During actual operation, as water is continuously squeezed out from the gaps in the screen plates, the sludge's moisture content reaches approximately 80%, leading to a sharp increase in frictional resistance. At this point, relying solely on the minimal eccentric circular motion of the moving screen plates and the weak thrust of the serrated edges to push the dewatered sludge results in an extremely slow sludge discharge rate. Ultimately, the dewatered sludge completely fills the entire sealed filter cavity and cannot move forward, causing the equipment to cease continuous operation.

[0005] Therefore, there is an urgent need to provide a stacked plate thickening and dewatering integrated machine with high dewatering sludge propulsion efficiency and low clogging. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a stacked plate thickening and dewatering integrated machine, which solves the technical problem that the existing stacked plate sludge thickening and dewatering machine has a serious inability to discharge internal dewatered sludge, which easily causes the cavity to become blocked.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0010] This invention provides a stacked plate type thickener and dewatering integrated machine, including: a multi-grid filter module, a feed end plate, a discharge end plate, a mud pusher assembly, and a linear drive assembly;

[0011] The multi-grid filter module includes a first grid assembly, a second grid assembly, a first side plate, and a second side plate. The first grid assembly and the second grid assembly are fixedly connected by the first side plate and the second side plate, and the first grid assembly, the second grid assembly, the first side plate, and the second side plate enclose a sludge dewatering chamber that runs through the front and back.

[0012] The front end face of the multi-grid filter module is fixedly provided with a feed end plate, and the feed end plate is provided with a sludge inlet that communicates with the sludge dewatering chamber; the rear end face of the multi-grid filter module is fixedly provided with a discharge end plate, and the discharge end plate is provided with a sludge outlet that communicates with the sludge dewatering chamber.

[0013] The pusher plate assembly is movably installed inside the sludge dewatering chamber. The linear drive assembly is located outside the sludge dewatering chamber and connected to the pusher plate assembly. It is used to drive the pusher plate assembly to move back and forth in the sludge dewatering chamber from the sludge inlet toward the sludge outlet.

[0014] Optionally, the pusher assembly includes a pusher body and a folding mechanism, the pusher body being hinged to the folding mechanism, and the folding mechanism being able to switch between an open state and a closed state.

[0015] Specifically, when the pusher plate assembly moves forward, the folding mechanism is in a closed state to reduce sludge resistance; when the pusher plate assembly moves backward to push sludge, the folding mechanism is in an open state to increase the contact area with the sludge.

[0016] Optionally, the linear drive assembly includes a first linear actuator and a second linear actuator;

[0017] The first linear actuator is connected to the pusher plate body for driving the pusher plate assembly to move linearly back and forth in the front and rear directions.

[0018] The second linear actuator is connected to the folding mechanism and is used to drive the folding mechanism to unfold or fold, so as to switch between the open and closed states.

[0019] Optionally, the linear drive assembly also includes an actuator mounting plate, connecting rods, crossbeams, and multiple pusher rods;

[0020] The actuator mounting plate is fixedly supported on the outside of the discharge end plate by multiple connecting rods. The first linear actuator is mounted on the actuator mounting plate, and the piston rod end of the first linear actuator is connected to the crossbeam.

[0021] The side of the crossbeam away from the first linear actuator is connected to one end of multiple pusher plate rods. The other end of the multiple pusher plate rods slides through the discharge end plate and is fixedly connected to the pusher plate body. The first linear actuator drives the pusher plate assembly to move as a whole through the crossbeam and the pusher plate rods.

[0022] Optionally, the linear drive assembly also includes a stacked control rod, and the second linear actuator is fixedly mounted on the crossbeam and is arranged in a staggered manner with the pusher plate tie rod;

[0023] The piston rod end of the second linear actuator is fixedly connected to one end of the stacked control rod, and the other end of the stacked control rod moves through the discharge end plate and the pusher plate body in sequence.

[0024] The folding mechanism includes a fixed block, two stacked pieces, and two connecting plates. The fixed block is fixedly sleeved on the stacked piece control rod. The upper and lower sides of the fixed block are respectively hinged to one end of the two connecting plates. The other ends of the two connecting plates are respectively hinged to one side of the two stacked pieces. The other sides of the two stacked pieces are respectively hinged to the upper and lower sides of the pusher plate body, so that the two stacked pieces and the two connecting plates constitute a four-bar linkage unfolding mechanism.

[0025] The second linear actuator drives the fixed block to approach or move away from the pusher plate body via the stacked control rod, so that the folding mechanism switches between the open and closed states.

[0026] Optionally, both the first grid assembly and the second grid assembly include a plurality of alternately arranged stationary grids and moving grids, with filter gaps formed between adjacent stationary and moving grids;

[0027] The upper and lower edges of the first and second side plates are both fixed with stationary grid plate fixing shafts. The outer side of the stationary grid plate is provided with a fixing ear plate, and the stationary grid plate fixing shaft passes through the fixing ear plate to fix the stationary grid plate.

[0028] When the folding mechanism is in the open state, the open folding pieces can push the grid pieces outward, causing the moving grid pieces to move outward relative to the stationary grid pieces.

[0029] Optionally, the multi-grid filter module further includes: a movable grid bar, a rotating arm, and a positioning sleeve; the two ends of the movable grid bar are respectively hinged to the first side plate and the second side plate through the rotating arm, and the positioning sleeve is fixedly disposed on the movable grid bar;

[0030] The linear drive assembly also includes a longitudinal beam, a moving grid plate drive rod, and an abutment sleeve; a vertically arranged longitudinal beam is provided on the cross beam, and a moving grid plate drive rod is fixedly provided at the upper and lower ends of the longitudinal beam. The moving grid plate drive rod moves through the discharge end plate and the positioning sleeve in sequence, and an abutment sleeve that cooperates with the positioning sleeve is fixedly provided on the moving grid plate pressure rod.

[0031] When the crossbeam drives the mud-pushing plate assembly to move close to the mud outlet, the abutment sleeve abuts against the positioning sleeve and drives the moving grid plate pressure rod to rotate inward around the hinge point of the rotating arm, so as to press the moving grid plate inward and reset the moving grid plate relative to the stationary grid plate.

[0032] Optionally, two movable grid plate limiting shafts are provided between the first side plate and the second side plate, one of which is arranged adjacent to the first grid plate assembly, and the other is arranged adjacent to the second grid plate assembly.

[0033] Two moving grid plate limiting shafts are located inside the sludge dewatering chamber and are used to cooperate with the stationary grid plate fixing shaft located outside the sludge dewatering chamber to limit the movement limit of the moving grid plates.

[0034] Optionally, a back pressure plate is movably installed at the mud outlet, the back pressure plate is positioned facing the discharge end plate and provides back pressure resistance through an elastic element;

[0035] The elastic element includes a compression spring, a compression spring guide rod, and a limiting nut. Multiple compression spring guide rods are fixedly installed around the four edges of the discharge end plate. The ends of the multiple compression spring guide rods away from the discharge end plate pass through the back pressure plate and the compression spring in sequence and are screwed to the limiting nut. One end of the compression spring abuts against the outer surface of the back pressure plate, and the other end abuts against the limiting nut.

[0036] Optionally, the multi-grid filter module has a modular, independent structure;

[0037] The stacked plate thickener and dewatering integrated machine includes at least two multi-plate filter modules connected in series along the sludge propulsion direction. Adjacent multi-plate filter modules are joined by a transition plate to form a continuous, interconnected sludge dewatering chamber; or...

[0038] The stacked plate thickener and dewatering integrated machine includes at least two rows of multi-plate filter modules arranged side by side. Each row of multi-plate filter modules connected in parallel is equipped with an independent pusher plate assembly and a linear drive assembly.

[0039] (III) Beneficial Effects

[0040] The beneficial effects of this invention are as follows: The stacked-plate thickening and dewatering integrated machine of this invention, by setting a pusher plate assembly in the sludge dewatering chamber and driving it to move back and forth by an external linear drive assembly, provides a powerful forced mechanical thrust to the pusher plate assembly, compared to the prior art that relies solely on the static pressure of the sludge inlet or the slight eccentric movement of the moving grid plates. This invention not only effectively overcomes the huge frictional resistance brought by the dewatered sludge in the chamber, realizing the efficient transport and discharge of dewatered sludge from the inlet to the outlet; but also, while powerfully pushing the sludge, the pusher plate assembly can also exert an additional squeezing effect on the sludge to assist in dewatering, further reducing the moisture content of the discharged sludge and significantly improving the overall operating efficiency and dewatering performance of the equipment. Attached Figure Description

[0041] Figure 1 This is a three-dimensional schematic diagram of Embodiment 1 of the stacked plate type concentration and dehydration integrated machine of the present invention;

[0042] Figure 2 This is a top view schematic diagram of Embodiment 1 of the stacked plate type concentration and dehydration integrated machine of the present invention;

[0043] Figure 3 for Figure 2 A three-dimensional schematic diagram of the discharge end plate and back pressure plate in the middle;

[0044] Figure 4 for Figure 2 A three-dimensional schematic diagram of the multi-grating filter module in the image;

[0045] Figure 5 for Figure 4 A front view schematic diagram of the multi-grating filter module in the image;

[0046] Figure 6 This is a three-dimensional schematic diagram of the linear drive assembly and the mud pusher assembly of Embodiment 1 of the stacked plate thickening and dehydration integrated machine of the present invention.

[0047] Figure 7 This is a schematic diagram of the internal structure of Embodiment 1 of the stacked plate thickening and dehydration integrated machine of the present invention, wherein the mud pusher assembly is in a closed state, and the linear drive assembly pushes the mud pusher assembly to the mud inlet.

[0048] Figure 8 This is another internal structure schematic diagram of Embodiment 1 of the stacked plate thickening and dehydration integrated machine of the present invention, wherein the second linear actuator drives the pusher plate assembly to switch to the open state, and the pusher plate assembly in the open state pushes the moving grid plate outward, so that the moving grid plate moves relative to the stationary grid plate.

[0049] Figure 9This is another internal structure schematic diagram of Embodiment 1 of the stacked plate thickening and dehydration integrated machine of the present invention, wherein the linear drive component drives the mud pusher assembly to move toward the direction of approaching the mud outlet;

[0050] Figure 10 This is another internal structure schematic diagram of Embodiment 1 of the stacked plate thickening and dehydration integrated machine of the present invention, wherein the second linear actuator drives the mud pusher assembly to switch to the closed state, and the abutting sleeve on the moving grid drive rod abuts against the positioning sleeve on the moving grid pressure rod, so that the moving grid pressure rod and the rotating arm rotate inward to press down the moving grid.

[0051] Figure 11 This is a three-dimensional schematic diagram of Embodiment 2 of the stacked plate thickener and dehydrator of the present invention, wherein the stacked plate thickener and dehydrator includes two multi-grid filter modules connected in series.

[0052] Figure 12 This is a perspective view of Embodiment 3 of the stacked plate thickener and dehydrator of the present invention, wherein the stacked plate thickener and dehydrator includes three parallel multi-grid filter modules.

[0053] [Explanation of Labels in the Attached Image]

[0054] 1: Mud inlet; 2: Mud outlet; 3: Feed end plate; 301: Feed box; 4: Discharge end plate; 5: First side plate; 6: Second side plate; 7: Multi-grid filter module; 8: Mud pusher plate assembly; 9: Linear drive assembly; 10: Static grid plate; 11: Moving grid plate; 12: Static grid plate fixing shaft; 13: Moving grid plate limiting shaft; 14: Moving grid plate pressure rod; 15: Rotating arm; 16: Positioning sleeve; 17: Mud pusher plate body; 18: Stacked plates; 19: First linear actuator; 20: Second linear actuator; 21: Actuator mounting plate; 22: Connecting rod; 23: Crossbeam; 24: Pusher plate tie rod; 25: Stacking plate control rod; 26: Fixing block; 27: Connecting plate; 28: Longitudinal beam; 29: Moving grid plate drive rod; 30: Abutment sleeve; 31: Back pressure plate; 32: Compression spring; 33: Compression spring guide rod; 34: Limit nut; 35: Sliding sleeve; 36: Support block; 37: Transition plate. Detailed Implementation

[0055] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, directional terms such as "upper," "lower," "left," "right," "front," and "rear" are used interchangeably. Figure 1 The orientation is used as a reference. It should be noted that the directional terms mentioned in this article are only for... Figure 1 The schematic diagram of the stacked plate thickener and dehydrator shown does not constitute a limitation on the actual installation and use of the machine.

[0056] Example 1:

[0057] Reference Figures 1 to 10 This embodiment provides a stacked plate type thickening and dehydration integrated machine, including a screw pump (not shown in the figure), a feed end plate 3, a multi-grid filter module 7, a discharge end plate 4, a mud pusher assembly 8, a linear drive assembly 9, and a machine casing (not shown in the figure).

[0058] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The multi-grid filter module 7 specifically includes a first grid assembly, a second grid assembly, a first side plate 5, and a second side plate 6. The first and second grid assemblies are arranged vertically opposite each other, while the first and second side plates 5 and 6 are arranged horizontally opposite each other. The first and second grid assemblies are fixedly connected via the first and second side plates 5 and 6, thus forming a rectangular sludge dewatering chamber that extends through the front and rear. A feed end plate 3 is fixedly installed on the front end face of the multi-grid filter module 7, and a feed box 301 is connected to the outside of the feed end plate 3. The feed box 301 has a sludge inlet 1 that communicates with the sludge dewatering chamber. A discharge end plate 4 is fixedly installed on its rear end face, and a sludge outlet 2 that communicates with the sludge dewatering chamber is opened on the discharge end plate 4. The sludge inlet 1 is usually connected to an external sludge feed screw pump, and sludge containing flocculant enters the sludge dewatering chamber under the pressure of the screw pump.

[0059] Furthermore, both the first and second grid assembly consist of multiple alternately arranged stationary grids 10 and moving grids 11, with gaps for water filtration between adjacent stationary and moving grids 10. For fixation and positioning, stationary grid fixing shafts 12 are fixedly inserted through the upper and lower edges of the first side plate 5 and the second side plate 6. A fixing lug is provided on the outer side of the stationary grid 10, through which the stationary grid fixing shaft 12 passes to securely fix the stationary grid 10. Simultaneously, at least two moving grid limiting shafts 13 are laterally arranged between the first side plate 5 and the second side plate 6, located inside the first and second grid assemblies, i.e., within the sludge dewatering chamber. The moving grid 11 is itself a movable component and is not fixed to the stationary grid fixing shaft 12. Its outward movement is blocked by the stationary grid fixing shaft 12, while its inward fall is supported and limited by the moving grid limiting shaft 13, thus constraining it to make only slight up-and-down movements within a predetermined stroke.

[0060] Specifically, in this embodiment, the upper side of the first grid assembly is provided with 3 stationary grid fixing shafts 12, and the lower side of the first grid assembly is provided with 2 moving grid limiting shafts 13; the lower side of the second grid assembly is provided with 3 stationary grid fixing shafts 12, and the upper side of the second grid assembly is provided with 2 moving grid limiting shafts 13, for a total of 6 stationary grid fixing shafts 12 and 4 moving grid limiting shafts 13.

[0061] In addition, it should be noted that the housing is fitted around the multi-grid filter module 7. The water filtered by the multi-grid filter module 7 enters the housing and is discharged through the drain port at the bottom of the housing.

[0062] Reference Figure 6 and Figure 7 To force the dewatered sludge out and clean the filter gaps, a pusher plate assembly 8 is movably installed inside the sludge dewatering chamber, and a linear drive assembly 9 is installed outside the sludge dewatering chamber. The linear drive assembly 9 includes a first linear actuator 19 that provides the main driving force and a second linear actuator 20 that provides the folding driving force. The first linear actuator 19 and the second linear actuator 20 can be hydraulic cylinders, electric push rods, or pneumatic cylinders.

[0063] The first linear actuator 19 is mounted on an actuator mounting plate 21 fixed to the outside of the discharge end plate 4 via a connecting rod 22. A crossbeam 23 is connected to the end of its piston rod. Multiple pusher plate rods 24 are fixed to the crossbeam 23, passing through the discharge end plate 4 and fixedly connected to the pusher plate body 17 of the pusher plate assembly 8. When the first linear actuator 19 extends or retracts, it drives the entire pusher plate assembly 8 to perform a linear reciprocating motion within the sludge dewatering chamber via the crossbeam 23 and the pusher plate rods 24.

[0064] In addition to the pusher plate body 17, the pusher plate assembly 8 also includes a folding mechanism. The folding mechanism specifically includes two stacked plates 18, two connecting plates 27, and a fixing block 26. Preferably, there are two second linear actuators 20, symmetrically fixed on the left and right sides of the crossbeam 23. The piston rod of each second linear actuator 20 is connected to a stacked plate control rod 25, which passes through the discharge end plate 4 and moves through the pusher plate body 17. The fixing block 26 is fixed to the stacked plate control rod 25. The upper and lower sides of the fixing block 26 are respectively hinged to the connecting plates 27, and the other end of the connecting plates 27 is hinged to the stacked plates 18. The other edge of the stacked plates 18 is hinged to the upper and lower edges of the pusher plate body 17, thus forming a four-bar linkage deployment mechanism. When the second linear actuator 20 drives the stacked plate control rod 25 to produce a relative displacement relative to the pusher plate pull rod 24, the fixing block 26 moves accordingly, opening or closing the connecting plates 27, thereby causing the stacked plates 18 to unfold (open state) or lie flat and closed (closed state).

[0065] Furthermore, it should be noted that there are two pusher plate assemblies 8, one of which is installed on the front side of the pusher plate tie rod 24, and the other is installed on the rear side of the pusher plate tie rod 24. Of course, this embodiment is not limited to this, and the number of pusher plate assemblies 8 can also be more than two.

[0066] Reference Figure 4 and Figure 6A movable grid bar pressure rod 14 is provided on the outside of the multi-grid filter module 7. The two ends of the movable grid bar pressure rod 14 are hinged to the first side plate 5 and the second side plate 6 through rotating arms 15. A positioning sleeve 16 is fixed on the movable grid bar pressure rod 14. Vertical longitudinal beams 28 are provided at both ends of the crossbeam 23. Movable grid bar drive rods 29 are fixed at the upper and lower ends of the longitudinal beams 28. The movable grid bar drive rods 29 move synchronously with the crossbeam 23 and move through the discharge end plate 4 and the positioning sleeve 16 in sequence. An abutment sleeve 30 is fixed on it, and the abutment sleeve 30 cooperates with the positioning sleeve 16.

[0067] Reference Figure 5 and Figure 7 Multiple support blocks 36 are provided between the two moving grid plate limiting shafts 13 adjacent to the mud inlet 1. The support blocks 36 have support holes inside, and the pusher plate pull rod 24 or the stacking control rod 25 passes through the support holes. In addition, the pusher plate pull rod 24 and the stacking control rod 25 can extend through the feed end plate 3 into the feed box 301. Part of the function of the feed box 301 is to accommodate part of the pusher plate pull rod 24 and the stacking control rod 25 when they move to the foremost position.

[0068] Reference Figure 3 and Figure 7 A mud outlet 2 is provided at the center of the discharge end plate 4, and a pressure-holding structure is provided on the outside of the mud outlet 2. Specifically, multiple compression spring guide rods 33 are fixedly arranged around the mud outlet 2 at the center of the discharge end plate 4, and a back pressure plate 31 is movably sleeved on the compression spring guide rods 33. A compression spring 32 is sleeved on the outside of the compression spring guide rod 33 and is pressed by a limiting nut 34. The two ends of the compression spring 32 abut against the limiting nut 34 and the back pressure plate 31 respectively, so as to press the back pressure plate 31 tightly against the mud outlet 2. By turning the limiting nut 34, the compression amount of the compression spring 32 can be adjusted, thereby adjusting the magnitude of the mud discharge back pressure.

[0069] Furthermore, the back pressure plate 31 has multiple through holes, and a sliding sleeve 35 is installed at each of the multiple through holes. The pusher plate rod 24 and the stacking control rod 25 are movably inserted into the sliding sleeve 35.

[0070] A complete working cycle of the stacked plate-type thickener and dehydrater in this embodiment is as follows:

[0071] (1) Initial state (refer to) Figure 7 The pusher plate assembly 8 at the front end of the pusher plate pull rod 24 is located in the initial position closest to the sludge inlet 1. At this time, the second linear actuator 20 is in the retracted state, pulling the fixing block 26 to close the stacked plates 18 against the pusher plate body 17 to reduce the volume. Under the pressure of the screw pump, the sludge continuously enters the sludge dewatering chamber and undergoes dewatering.

[0072] (2) Opening up the mud-pushing preparation state (refer to) Figure 8 The second linear actuator 20 extends, pushing the stacked plate control rod 25. The fixed block 26 moves forward, opening the connecting plate 27, causing the upper and lower stacked plates 18 to open in an outward V-shape. The opened stacked plates 18 push the moving grid plates 11 on both sides outward, causing them to move outward relative to the stationary grid plate 10. This misalignment of the moving grid plates 11 effectively clears the filter gaps clogged by sludge, ensuring smooth drainage of water.

[0073] (3) Pushing mud backward (refer to) Figure 9 ): Keeping the stacked plates 18 open, the first linear actuator 19 retracts, driving the pusher plate assembly 8 to move towards the sludge outlet 2. The open pusher plate assembly 8 acts like a scraper, forcefully pushing the dewatered sludge in the sludge dewatering chamber backward, which overcomes the frictional resistance of the dewatered sludge.

[0074] (4) Squeezing out mud and resetting state (refer to) Figure 10 When the pusher plate assembly 8 at the rear end of the pusher plate tie rod 24 moves to the vicinity of the mud outlet 2, the extrusion force on the dewatered sludge pushed to the rear end is greater than the elastic force of the pressure spring 32 on the back pressure plate 31. The back pressure plate 31 is pushed open, and the dewatered sludge is squeezed out from the mud outlet gap.

[0075] At the end of this stroke, the second linear actuator 20 retracts, closing the stacked plates 18 (closed state); subsequently, the abutment sleeve 30 on the moving plate drive rod 29 comes into contact with the positioning sleeve 16 on the moving plate pressure rod 14. The abutment sleeve 30 continues to move slightly backward with the crossbeam 23, forcing the moving plate pressure rod 14 to drive the rotating arm 15 to rotate inward around the hinge point. The rotating moving plate pressure rod 14 presses the previously protruding moving plate 11 back to its initial position.

[0076] Finally, the first linear actuator 19 extends, driving the closed pusher plate assembly 8 forward to... Figure 7 The initial position is shown. Because it is in a closed state when moving forward, it will not bring the sludge that has been pushed to the back back to the front, thus completing an efficient cycle of cleaning cracks, pushing sludge, squeezing and dewatering.

[0077] Example 2:

[0078] Reference Figure 11 This embodiment provides another type of stacked plate thickening and dewatering integrated machine. In order to cope with scenarios that require extremely high sludge moisture content and longer dewatering time, this embodiment adopts a series modular design.

[0079] like Figure 11As shown, the device includes two multi-grid filter modules 7 connected in series along the sludge propulsion direction. The rear end of the first multi-grid filter module 7 and the front end of the second multi-grid filter module 7 are connected by a transition plate 37 with a flange structure, forming a continuous through-type sludge dewatering chamber with double the length. The feed end plate 3 and the discharge end plate 4 are installed at the front and rear ends of the overall structure, respectively. The tie rod of the linear drive assembly 9 is correspondingly lengthened, driving multiple sludge pusher assemblies 8 to operate in the longer chamber. This allows the sludge to stay and be compressed in the equipment for a longer time, further reducing the moisture content of the discharged sludge.

[0080] In addition, it should be noted that the number of multi-grid filter modules 7 connected in series is not limited to two, but can also be three, four, five or more.

[0081] The remaining parts that are the same as in Example 1 will not be repeated here.

[0082] Example 3:

[0083] Reference Figure 12 This embodiment provides another type of stacked plate thickening and dewatering integrated machine. To cope with large-scale wastewater treatment projects with large processing capacity, this embodiment adopts a parallel modular design.

[0084] like Figure 12 As shown, the stacked plate thickener and dewatering integrated machine of this embodiment includes three rows of multi-plate filter modules 7 arranged side by side. These three rows of modules can be configured with independent feed boxes 301 and sludge inlets 1, or they can share a large feed box 301 and sludge inlet 1.

[0085] Meanwhile, to ensure sufficient sludge pushing force and reliable operation, each row of multi-grid filter modules in parallel is equipped with an independent first linear actuator 19, an independent sludge pushing plate assembly 8, and a second linear actuator 20. This multi-row parallel arrangement significantly increases the sludge solids throughput and water throughput per unit time without increasing the equipment length.

[0086] In addition, it should be noted that the number of parallel multi-grid filter modules 7 is not limited to three, but can also be two, four, five or more.

[0087] The remaining parts that are the same as in Example 1 will not be repeated here.

[0088] Example 4:

[0089] This embodiment provides another type of stacked plate thickener and dehydrator. This stacked plate thickener and dehydrator combines the series connection of Embodiment 2 with the parallel connection of Embodiment 3, forming a matrix architecture of multi-plate filter modules 7 connected in series and parallel. For example, two modules are connected in series as one column, with a total of three or four columns connected in parallel.

[0090] This matrix-style modular design allows the integrated machine to not only have an extremely high single-unit sludge processing capacity, but also to ensure an extremely low sludge moisture content, truly enabling flexible customization of equipment specifications (length-to-width ratio, processing capacity, and moisture content) according to the actual working conditions of customers.

[0091] The remaining parts that are the same as in Examples 2 and 3 will not be repeated here.

[0092] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0093] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0094] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0095] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0096] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A stacked-plate type integrated concentration and dehydration machine, characterized in that: include: Multi-grid filter module (7), feed end plate (3), discharge end plate (4), mud pusher assembly (8) and linear drive assembly (9); The multi-grid filter module (7) includes a first grid assembly, a second grid assembly, a first side plate (5) and a second side plate (6). The first grid assembly and the second grid assembly are fixedly connected through the first side plate (5) and the second side plate (6). The first grid assembly, the second grid assembly, the first side plate (5) and the second side plate (6) enclose a sludge dewatering chamber that runs through the front and back. The front end face of the multi-grid filter module (7) is fixedly provided with a feed end plate (3), and the feed end plate (3) is provided with a sludge inlet (1) that communicates with the sludge dewatering chamber; the rear end face of the multi-grid filter module (7) is fixedly provided with a discharge end plate (4), and the discharge end plate (4) is provided with a sludge outlet (2) that communicates with the sludge dewatering chamber. The pusher plate assembly (8) is movably installed inside the sludge dewatering chamber. The linear drive assembly (9) is installed outside the sludge dewatering chamber and connected to the pusher plate assembly (8). It is used to drive the pusher plate assembly (8) to move back and forth in the sludge dewatering chamber in the direction from the sludge inlet (1) toward the sludge outlet (2).

2. The stacked-plate type concentration and dehydration integrated machine as described in claim 1, characterized in that: The mud-pushing plate assembly (8) includes a mud-pushing plate body (17) and a folding mechanism. The mud-pushing plate body (17) is hinged to the folding mechanism, which can switch between an open state and a closed state. When the pusher plate assembly (8) moves forward, the folding mechanism is in a closed state to reduce sludge resistance; when the pusher plate assembly (8) moves backward to push sludge, the folding mechanism is in an open state to increase the contact area with the sludge.

3. The stacked-plate type concentration and dehydration integrated machine as described in claim 2, characterized in that: The linear drive assembly (9) includes a first linear actuator (19) and a second linear actuator (20); The first linear actuator (19) is connected to the pusher plate body (17) for driving the pusher plate assembly (8) to move linearly back and forth in the front and rear directions. The second linear actuator (20) is connected to the folding mechanism and is used to drive the folding mechanism to unfold or fold, so as to switch between the open state and the closed state.

4. The stacked-plate type concentration and dehydration integrated machine as described in claim 3, characterized in that: The linear drive assembly (9) also includes an actuator mounting plate (21), a connecting rod (22), a crossbeam (23), and multiple pusher rods (24); The actuator mounting plate (21) is fixedly supported on the outside of the discharge end plate (4) by multiple connecting rods (22). The first linear actuator (19) is mounted on the actuator mounting plate (21), and the piston rod end of the first linear actuator (19) is connected to the crossbeam (23). The side of the crossbeam (23) away from the first linear actuator (19) is connected to one end of a plurality of pusher plate rods (24). The other end of the plurality of pusher plate rods (24) slides through the discharge end plate (4) and is fixedly connected to the pusher plate body (17). The first linear actuator (19) drives the pusher plate assembly (8) to move as a whole through the crossbeam (23) and the pusher plate rods (24).

5. The stacked-plate type concentration and dehydration integrated machine as described in claim 4, characterized in that: The linear drive assembly (9) also includes a stacked control rod (25), and a second linear actuator (20) is fixedly mounted on the crossbeam (23) and is arranged in a staggered manner with the pusher plate tie rod (24); The piston rod end of the second linear actuator (20) is fixedly connected to one end of the stacked control rod (25), and the other end of the stacked control rod (25) moves through the discharge end plate (4) and the mud pusher body (17) in sequence. The folding mechanism includes a fixed block (26), two stacked pieces (18) and two connecting plates (27); the fixed block (26) is fixedly sleeved on the stacked piece control rod (25), the upper and lower sides of the fixed block (26) are respectively hinged to one end of the two connecting plates (27), the other end of the two connecting plates (27) is respectively hinged to one side of the two stacked pieces (18), and the other side of the two stacked pieces (18) is respectively hinged to the upper and lower sides of the pusher plate body (17), so that the two stacked pieces (18) and the two connecting plates (27) constitute a four-bar linkage unfolding mechanism; The second linear actuator (20) drives the fixed block (26) to approach or move away from the pusher plate body (17) via the stacking control rod (25) so that the folding mechanism switches between the open and closed states.

6. The stacked-plate type concentration and dehydration integrated machine as described in claim 5, characterized in that: Both the first grid assembly and the second grid assembly include multiple alternating static grids (10) and moving grids (11), with filter gaps formed between adjacent static grids (10) and moving grids (11); The upper and lower edges of the first side plate (5) and the second side plate (6) are both fixed with a stationary grid plate fixing shaft (12). The outer side of the stationary grid plate (10) is provided with a fixing ear plate, and the stationary grid plate fixing shaft (12) passes through the fixing ear plate to fix the stationary grid plate (10). When the folding mechanism is in the open state, the open folding piece (18) can push the grid piece (11) outward, so that the moving grid piece (11) moves outward relative to the stationary grid piece (10).

7. The stacked-plate type concentration and dehydration integrated machine as described in claim 6, characterized in that: The multi-grid filter module (7) also includes: a movable grid bar (14), a rotating arm (15), and a positioning sleeve (16); the two ends of the movable grid bar (14) are respectively hinged to the first side plate (5) and the second side plate (6) through the rotating arm (15), and the positioning sleeve (16) is fixedly set on the movable grid bar (14); The linear drive assembly (9) also includes a longitudinal beam (28), a moving grid plate drive rod (29), and an abutment sleeve (30); a vertically arranged longitudinal beam (28) is provided on the cross beam (23), and a moving grid plate drive rod (29) is fixedly provided at the upper and lower ends of the longitudinal beam (28). The moving grid plate drive rod (29) moves through the discharge end plate (4) and the positioning sleeve (16) in sequence. An abutment sleeve (30) that cooperates with the positioning sleeve (16) is fixedly provided on the moving grid plate pressure rod (14). When the crossbeam (23) drives the mud pusher assembly (8) to move to a position close to the mud outlet (2), the abutment sleeve (30) abuts against the positioning sleeve (16) and drives the moving grid plate pressure rod (14) to rotate inward around the hinge point of the rotating arm (15) to press the moving grid plate (11) back inward, so that the moving grid plate (11) moves inward relative to the stationary grid plate (10) to reset.

8. The stacked-plate type concentration and dehydration integrated machine as described in claim 6, characterized in that: Two movable grid plate limiting shafts (13) are provided between the first side plate (5) and the second side plate (6). One movable grid plate limiting shaft (13) is arranged adjacent to the first grid plate assembly, and the other movable grid plate limiting shaft (13) is arranged adjacent to the second grid plate assembly. Two moving grid plate limiting shafts (13) are located inside the sludge dewatering chamber and are used to cooperate with the stationary grid plate fixing shaft (12) located outside the sludge dewatering chamber to limit the movement limit of the moving grid plate (11).

9. The stacked-plate type concentrated dehydrator as described in any one of claims 1-8, characterized in that: A back pressure plate (31) is movably installed at the mud outlet (2). The back pressure plate (31) is set towards the discharge end plate (4) and provides back pressure resistance through an elastic element. The elastic element includes a compression spring (32), a compression spring guide rod (33), and a limiting nut (34). Multiple compression spring guide rods (33) are fixedly arranged around the perimeter of the discharge end plate (4). The ends of the multiple compression spring guide rods (33) away from the discharge end plate (4) pass through the back pressure plate (31) and the compression spring (32) in sequence, and are screwed to the limiting nut (34). One end of the compression spring (32) abuts against the outer surface of the back pressure plate (31), and the other end abuts against the limiting nut (34).

10. The stacked-plate type concentration and dehydration integrated machine as described in any one of claims 1-9, characterized in that: The multi-grating filter module (7) is a modular, independent structure; The stacked plate thickening and dewatering integrated machine includes at least two multi-plate filter modules (7) connected in series along the sludge propulsion direction. Adjacent multi-plate filter modules (7) are joined by a transition plate (37) to form a continuous sludge dewatering chamber; or... The stacked plate thickener and dewatering unit includes at least two rows of multi-plate filter modules (7) arranged side by side. Each row of multi-plate filter modules is equipped with an independent pusher plate assembly (8) and a linear drive assembly (9).

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