Urban river and lake sludge filter pressing dewatering device

Abstract

The utility model provides a kind of urban river and lake sludge filter-press dewatering device, belongs to filter-press device technical field, including filter-press box and pressing plate, further include: first groove, mounting plate, filter cloth, discharge port, discharge guide channel, baffle, table board, extension block, drive rod, trigger and push assembly, first groove is opened in filter-press box right side wall;Two mounting plates are provided, and right side mounting plate is slidably embedded in first groove. Through the time sequence coupling of filter-pressing and discharging action, eliminate discharging interval, ensure process continuity, without additional auxiliary equipment, while avoiding the time loss of discharging interruption, increase sludge processing capacity per unit time, improve overall efficiency;With linkage design, make good discharging preparation during lifting process after filter-pressing, improve operation intelligent degree and response speed, realize seamless connection of filter-pressing and discharging;Adopt screw driving mode, can provide continuous stable high pressure, realize depth dewatering for high viscosity, high water content river and lake sludge.

Description

Technical Field

[0001] This utility model belongs to the technical field of filter press devices, specifically relating to a filter press dewatering device for urban river and lake silt. Background Technology

[0002] The urban river and lake silt dewatering device first uses an excavator or sludge pump to discharge the river silt. After being filtered and dewatered by the device, the silt volume is reduced, lowering subsequent treatment costs. The dewatered silt can be reused for land improvement, building material production, and other resource recycling, enhancing the utilization value of the silt.

[0003] In related technology (Chinese Patent No. CN217556042U), a high-pressure filter press dewatering device for river silt treatment is disclosed, including a placement box; the bottom of the high-pressure device is fixedly connected to the placement box; the bottom of the auxiliary filter device is fixedly connected to the placement box; the water filtration mechanism is slidably installed inside the auxiliary filter device; this utility model, by setting a water filtration mechanism and an auxiliary filter device inside the device, can quickly filter and dewater the top surface of the silt, and at the same time, it can also assist in quickly filtering and dewatering the inside of the silt. The dewatering effect is good and the speed is fast. After the dewatering is completed, the auxiliary filter device will automatically push the dewatered silt into the placement box, which is convenient and practical.

[0004] In the existing technology, although the filter press can dewater sludge, the filter cake after filtration is difficult to discharge automatically from the filter press chamber. It is necessary to rely on external auxiliary equipment to complete the unloading operation. The resulting discharge interval causes the process to be interrupted, which significantly restricts the overall processing efficiency of sludge dewatering and filtration. Utility Model Content

[0005] To address the problem that existing technologies struggle to automatically discharge the filter cake from the filter press chamber, requiring external auxiliary equipment for unloading, and resulting in discharge intervals that disrupt process continuity and significantly limit the overall processing efficiency of sludge dewatering and filtration, this invention provides a sludge dewatering and filtration device for urban rivers and lakes. This device achieves sequential coupling of filtration and discharge actions, eliminating discharge intervals, ensuring process continuity, and significantly improving system processing efficiency. On one hand, it eliminates the need for additional auxiliary equipment for discharge, reducing equipment investment and maintenance costs. On the other hand, it avoids time losses due to discharge interruptions, significantly increasing the sludge processing capacity per unit time and improving the overall efficiency of urban river and lake sludge treatment. The specific technical solution is as follows:

[0006] A dewatering device for urban river and lake silt includes a filter press and a pressure plate, and further comprises: a first tank, a mounting plate, a filter cloth, a discharge port, a discharge guide channel, a baffle, a platform, an extension block, a drive rod, a trigger, and a pushing assembly. The first tank is located on the right side wall of the filter press. Two mounting plates are provided, with the right mounting plate slidably embedded in the first tank. The filter cloth is installed between the two mounting plates. The discharge port is located on the rear inner wall of the filter press. The discharge guide channel is installed on the rear side wall of the filter press. The discharge guide channel corresponds to the discharge port; the baffle is vertically and movable and is embedded in the discharge port; the platform is fixedly installed on the top of the baffle and is slidably embedded in the filter press box in the vertical direction; the extension block is fixedly installed on the top of the front side wall of the platform and is located above the pressure plate; the drive rod is fixedly installed on the top of the right side wall of the platform and is L-shaped; the trigger is located above the drive rod; and the pushing component is located on the front side of the filter press box.

[0007] In the above technical solution, the bottom of the filter press box is equipped with support legs.

[0008] In the above technical solution, the pressure plate moves vertically via a drive unit, which includes a support arm, a mounting arm, a guide seat, an extension arm, a motor, and a lead screw. Two sets of support arms are provided, and each set is vertically mounted on the rear side of the top of the support leg. The mounting arm is mounted on the top end of the support arm. The guide seat is vertically mounted on the side wall of the mounting arm. The extension arm is fixedly mounted above the guide seat. The motor is mounted on the extension arm. The lead screw is mounted at the motor output end.

[0009] In the above technical solution, the drive unit further includes: a lifting seat, a connecting rod, a lifting arm, and a guide rod. The lifting seat is threaded onto the lead screw. Two connecting rods are provided, and the two connecting rods are installed vertically on the lower surface of the lifting seat. The bottom end of the connecting rod is fixedly connected to the upper surface of the pressure plate. The lifting arm is fixedly installed on the rear side wall of the lifting seat. The guide rod is installed vertically in the inner cavity of the guide seat, and the lifting arm is slidably sleeved on the guide rod in the vertical direction.

[0010] In the above technical solution, the bottom of the inner wall of the discharge port is located on the same horizontal line as the upper surface of the filter cloth.

[0011] In the above technical solution, a drain outlet is provided at the bottom of the filter press box, and a valve is installed inside the drain outlet.

[0012] In the above technical solution, the top of the side wall of the filter press is connected to a feed inlet.

[0013] In the above technical solution, the pushing component includes: a second tank, a pushing plate, an extension platform, a mounting base, and a hydraulic cylinder. The second tank is formed on the front side wall of the filter press box; the pushing plate is slidably embedded in the inner cavity of the second tank; the extension platform is fixedly installed on the front side wall of the support leg; the mounting base is fixedly installed on the extension platform; the hydraulic cylinder is installed on the mounting base, and the output end of the hydraulic cylinder is connected to the front side wall of the pushing plate.

[0014] In the above technical solution, the bottom of the inner wall of the second tank is located on the same horizontal line as the upper surface of the filter cloth.

[0015] The present invention provides a dewatering device for urban river and lake silt by pressure filtration, which, compared with the prior art, has the following advantages:

[0016] I. Addressing the issues of existing filter press equipment's reliance on external assistance for filter cake discharge and the efficiency constraints caused by intermittent processes, this invention establishes a linkage mechanism through the lifting and lowering of the pressure plate. When the pressure plate descends, it completes sludge dewatering and filtration; when it ascends, it simultaneously drives the extension block and drive rod to move, causing the baffle to automatically rise and open at the discharge port. The continuing upward movement of the drive rod triggers a trigger, driving the pusher plate to push the filter cake on the filter cloth through the discharge guide channel for discharge. This design achieves sequential coupling between filtration and discharge actions, eliminating discharge intervals, ensuring process continuity, and significantly improving system processing efficiency. On one hand, it eliminates the need for additional auxiliary equipment for discharge, reducing equipment investment and maintenance costs; on the other hand, it avoids time losses due to discharge interruptions, significantly increasing the amount of sludge processed per unit time and improving the overall efficiency of urban river and lake sludge treatment.

[0017] II. This utility model uses the rotational motion of a screw to drive the lifting seat, connecting dryer, and pressure plate to move up and down. While the pressure plate performs filtration of sludge in the inner cavity of the filter press, it simultaneously adjusts the position of the baffle at the discharge port, thereby controlling the opening and closing status of the discharge guide channel and the discharge volume. This linkage design allows the pressure plate to complete the discharge preparation during the lifting process after filtration, significantly improving the intelligence and response speed of the operation and achieving seamless connection between the filtration and discharge processes.

[0018] Third, in this utility model, the method of using a screw drive to press the pressure plate to filter and dewater the sludge in the filter press box can provide a continuous and stable high pressure compared to directly using a cylinder drive. It can achieve deep dewatering for the high viscosity and high water content characteristics of river and lake sludge, and the filter cake strength and dryness are better. The filtration effect is significantly better than that of cylinder drive.

[0019] In summary, this utility model has several significant advantages: by coupling the timing of filtration and discharge actions, it eliminates discharge intervals, ensures process continuity, eliminates the need for additional auxiliary equipment, reduces investment and maintenance costs, avoids time losses due to discharge interruptions, increases the amount of sludge processed per unit time, and improves overall efficiency; with the help of the linkage design, it prepares for discharge during the lifting process after filtration, improves the level of operation intelligence and response speed, and achieves seamless connection between filtration and discharge; the use of a threaded drive method can provide continuous and stable high pressure, achieving deep dewatering for river and lake sludge with high viscosity and high water content, resulting in better filter cake strength and dryness, and significantly better filtration effect than cylinder drive. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the filter press box of this utility model;

[0021] Figure 2 This is a front view of the pusher plate of this utility model;

[0022] Figure 3 This is a schematic diagram of the material discharge guide channel of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the baffle of this utility model;

[0024] Figure 5 This is a schematic diagram of the drive rod of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the filter cloth of this utility model;

[0026] Figures 1 to 6 In the middle, 1. Filter press box, 2. Pressure plate, 3. First tank, 4. Mounting plate, 5. Handle, 6. Filter cloth, 7. Discharge port, 8. Discharge guide channel, 9. Baffle, 10. Platform, 11. Extension block, 12. Drive rod, 13. Support arm, 14. Mounting arm, 15. Guide seat, 16. Trigger, 17. Extension arm, 18. Motor, 19. Screw, 20. Lifting seat, 21. Connecting rod, 22. Lifting arm, 23. Guide rod, 24. Second tank, 25. Push plate, 26. Extension platform, 27. Mounting seat, 28. Hydraulic cylinder, 29. Support leg, 30. Drain, 31. Valve, 32. Inlet. Detailed Implementation

[0027] The following are specific implementation cases and appendices. Figures 1 to 6 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0028] A dewatering device for urban river and lake sludge via filter press includes a filter press box 1 and a pressure plate 2, and further includes: a first tank 3, a mounting plate 4, a filter cloth 6, a discharge port 7, a discharge guide channel 8, a baffle 9, a platform 10, an extension block 11, a drive rod 12, a trigger 16, and a pushing assembly. The first tank 3 is located on the right side wall of the filter press box 1; two mounting plates 4 are provided, with the right mounting plate 4 slidably embedded within the first tank 3; the filter cloth 6 is installed between the two mounting plates 4; the filter cloth 6 is a commercially available general-purpose filter cloth capable of separating water and sludge, and is a general-purpose filter cloth that meets the usage requirements, so it will not be elaborated or limited here; the discharge port 7 is located on the rear inner wall of the filter press box 1; the bottom of the inner wall of the discharge port 7 is at the same horizontal line as the upper surface of the filter cloth 6, thereby ensuring that when the sludge on the filter cloth 6 is pushed, it can be filtered out. The sludge on the cloth 6 is completely pushed out of the inner cavity of the filter press 1 through the discharge port 7 to achieve discharge; the discharge guide channel 8 is installed on the rear side wall of the filter press 1, and the position of the discharge guide channel 8 corresponds to that of the discharge port 7; the baffle 9 is vertically movable and embedded in the discharge port 7; the platform 10 is fixedly installed on the top of the baffle 9, and the platform 10 slides vertically and is embedded in the filter press 1; the extension block 11 is fixedly installed on the top of the front side wall of the platform 10, and the extension block 11 is located above the pressure plate 2; the drive rod 12 is fixedly installed on the top of the right side wall of the platform 10, and the drive rod 12 is set in an L shape; the trigger 16 is set above the drive rod 12. The trigger 16 adopts a commercially available trigger, which can transmit a signal to the controller after being triggered. The controller controls the hydraulic cylinder 28 to open. This signal transmission is existing technology and will not be described or limited here; the pushing component is set on the front side of the filter press 1.

[0029] This utility model is equipped with a linkage mechanism with the lifting and lowering of the pressure plate 2 as the core. When the pressure plate 2 moves downward, it can perform dewatering and filtration operations on the sludge. When the pressure plate 2 moves upward, it will simultaneously drive the extension block 11 and the drive rod 12 to move, causing the baffle 9 to automatically rise and open at the discharge port 7. As the drive rod 12 continues to move upward, it triggers the trigger 16, which in turn drives the pusher plate 25 to push the filter cake on the filter cloth 6 through the discharge guide channel 8 for discharge.

[0030] This invention achieves sequential coordination between filter pressing and discharge operations, effectively eliminating discharge intervals, ensuring process continuity, and significantly improving system processing efficiency. From a cost perspective, no additional auxiliary equipment is required for discharge, reducing equipment investment and subsequent maintenance costs. From an efficiency perspective, it avoids time losses caused by discharge interruptions, increases the amount of sludge processed per unit time, and thus improves the overall efficiency of urban river and lake sludge treatment.

[0031] Main references Figure 1 and Figure 2 As shown, a support leg 29 is installed at the bottom of the filter press box 1, which provides support for the installation of the filter press box 1.

[0032] Main references Figure 1 and Figure 4 As shown, the pressure plate 2 moves vertically via a drive unit, which includes a support arm 13, a mounting arm 14, a guide seat 15, an extension arm 17, a motor 18, and a lead screw 19. Two sets of support arms 13 are provided, and each set is vertically mounted on the rear side of the top of the support leg 29. The mounting arm 14 is mounted on the top end of the support arm 13. The guide seat 15 is vertically mounted on the side wall of the mounting arm 14. The extension arm 17 is fixedly mounted above the guide seat 15. The motor 18 is mounted on the extension arm 17, and the motor 18 uses a commonly available output terminal capable of locking. The motor 18 is a self-locking motor. When it stops, its output end can self-lock, preventing rotation under external force. Motor 18 is a commonly used forward / reverse motor, and its output end can rotate in either direction according to usage requirements. As long as it meets the aforementioned usage requirements, it will not be elaborated upon or limited here. The lead screw 19 is installed at the output end of motor 18. Lead screw 19 is a self-locking lead screw currently available on the market. When it stops rotating, it self-locks, preventing rotation due to external force. This is existing technology, and as long as it meets the aforementioned usage requirements, it will not be elaborated upon or limited here. Opening lead screw 19 provides power for the lifting and lowering movement of pressure plate 2. The drive unit also includes: a lifting seat 20, a connecting rod 21, a lifting arm 22, and a guide rod 23. The lifting seat 20 is threaded onto the lead screw 19. There are two connecting rods 21, and the two connecting rods 21 are installed vertically on the lower surface of the lifting seat 20. The bottom end of the connecting rod 21 is fixedly connected to the upper surface of the pressure plate 2. The lifting arm 22 is fixedly installed on the rear side wall of the lifting seat 20. The guide rod 23 is installed vertically in the inner cavity of the guide seat 15, and the lifting arm 22 is slidably sleeved on the guide rod 23 in the vertical direction.

[0033] In this invention, the rotation of the lead screw 19 drives the lifting seat 20, connecting rod 21, and pressure plate 2 to move up and down. While the pressure plate 2 is performing filtration on the sludge inside the filter press 1, the baffle 9 can be adjusted at the discharge port 7 simultaneously, thereby controlling the opening and closing status of the discharge guide channel 8 and the discharge volume. This linkage design allows the pressure plate 2 to complete the discharge preparation during the lifting process after filtration, greatly improving the intelligence and response speed of the operation, and achieving seamless connection between the filtration and discharge processes.

[0034] This invention employs a threaded drive to achieve dewatering of sludge in the filter press chamber 1 by the pressure plate 2. Compared to traditional cylinder-driven methods, it offers significant technical advantages: through the mechanical force amplification effect and self-locking characteristics of the threaded drive, it can provide continuous and stable ultra-high pressure, which is 30%-50% higher than that of cylinder-driven methods. Specifically designed for the high viscosity and high moisture content characteristics of urban river and lake sludge, it achieves deep dewatering and dense filter cake formation. Actual measurements show that the filter cake moisture content is reduced to below 60%, 8%-12% lower than that of cylinder-driven methods; compressive strength is increased to 0.8-1.2 MPa; dryness and formability are significantly optimized; and filtration efficiency is increased by more than 25%. Overall performance surpasses cylinder-driven solutions.

[0035] Main references Figure 2 and Figure 3 As shown, a drain port 30 is provided at the bottom of the filter press 1. A valve 31 is installed inside the drain port 30. The valve 31 is a commercially available general-purpose valve that can control the drain port 30 to be in the open or closed state, thereby adjusting the state of the drain port 30 to drain or stop draining. This is a commonly used component in the prior art, and it can meet the above-mentioned usage requirements. It will not be described in detail or limited here.

[0036] Main references Figure 2 As shown, the top of the side wall of the filter press 1 is connected to the feed inlet 32. When in use, the sludge-water mixture to be filtered is fed into the inner cavity of the filter press 1 through the feed inlet 32.

[0037] Main references Figure 4 As shown, the pushing assembly includes: a second tank 24, a pusher plate 25, an extension platform 26, a mounting base 27, and a hydraulic cylinder 28. The second tank 24 is located on the front side wall of the filter press 1; the pusher plate 25 is slidably embedded in the inner cavity of the second tank 24; the extension platform 26 is fixedly installed on the front side wall of the support leg 29; the mounting base 27 is fixedly installed on the extension platform 26; the hydraulic cylinder 28 is installed on the mounting base 27, and the output end of the hydraulic cylinder 28 is connected to the front side wall of the pusher plate 25. The hydraulic cylinder 28 used in this application is a commonly used self-locking cylinder, whose output end can stop at any position and lock. This is existing technology, and it is sufficient to meet the above-mentioned usage requirements. It will not be described or limited here. The hydraulic cylinder 28 pushes the pusher plate 25 to move backward along the upper surface of the filter cloth 6, pushing the dewatered mud cake to the outside of the discharge port 7, and finally discharged through the discharge guide channel 8, completing the discharge process. The bottom of the inner wall of the second tank 24 is at the same horizontal line as the upper surface of the filter cloth 6, so as to ensure that when the pusher plate 25 pushes the mud cake backward along the second tank 24, it can push the mud on the filter cloth 6 out without being blocked by the filter cloth 6.

[0038] This equipment is also equipped with a controller, which controls the electrical components in this application, such as the hydraulic cylinder 28, motor 18, trigger 16, and valve 31. This is prior art. The controller is a commercially available general model that can meet the usage requirements, and will not be described or limited here.

[0039] The working principle of the urban river and lake silt dewatering device in this embodiment is as follows:

[0040] In use, the sludge-water mixture to be filtered is fed into the inner cavity of the filter press box 1 through the feed inlet 32. The motor 18 is started to control the screw 19 to rotate, so that the lifting seat 20 drives the connecting rod 21 and the pressure plate 2 to descend synchronously. The descending pressure plate 2 continuously applies pressure to the mixture in the filter press box 1, causing the water to pass through the filter cloth 6 and enter the bottom of the filter press box 1, while the sludge remains on the upper surface of the filter cloth 6, thus completing the separation of sludge and water.

[0041] After the filter press is completed, the output of the motor 18 rotates in reverse, driving the lead screw 19 to reverse, which in turn moves the lifting seat 20, the connecting rod 21 and the pressure plate 2 upward. When the pressure plate 2 lifts and the extension block 11 moves upward in sync, the extension block 11 moves the platform 10 and the baffle 9 upward, so that the baffle 9 opens at the discharge port 7. The extension block 11 continues to move upward to trigger the trigger 16. The trigger 16 transmits the signal to the external controller. The controller starts the hydraulic cylinder 28. The hydraulic cylinder 28 pushes the pusher plate 25 to move backward along the upper surface of the filter cloth 6, pushing the dewatered mud cake to the outside of the discharge port 7. Finally, it is discharged through the discharge guide channel 8, completing the discharge process.

[0042] In this invention, the timing coupling of filtration and discharge actions eliminates discharge intervals, ensuring process continuity. No additional auxiliary equipment is required, reducing investment and maintenance costs. Simultaneously, it avoids time losses due to discharge interruptions, increasing the amount of sludge processed per unit time and improving overall efficiency. Through a linkage design, discharge preparation is completed during the lifting process after filtration, enhancing operational intelligence and response speed, achieving seamless connection between filtration and discharge. The use of a threaded drive provides continuous and stable high pressure, enabling deep dewatering of high-viscosity, high-moisture river and lake sludge, resulting in superior filter cake strength and dryness, with a significantly better filtration effect than cylinder-driven systems.

[0043] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0044] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0045] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0046] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0047] Unless otherwise stated, the term "multiple" means two or more.

[0048] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0049] The term "and / or" describes the relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or A and B.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A kind of urban river lake sludge filter pressing dewatering device, including filter pressing box (1) and pressing plate (2), it is characterized by: Also includes: The first tank (3) is located on the right side wall of the filter press (1); Mounting plate (4), two mounting plates (4) are provided, and the right mounting plate (4) is slidably embedded in the first groove (3); Filter cloth (6), the filter cloth (6) is installed between the two mounting plates (4); The discharge port (7) is located on the inner rear side of the filter press (1); The discharge guide channel (8) is installed on the rear side wall of the filter press (1), and the discharge guide channel (8) is positioned opposite to the discharge port (7); Baffle (9), which is movable and adjustable, is embedded in the discharge port (7); Platform (10), the platform (10) is fixedly installed on the top of the baffle (9), and the platform (10) is slidably embedded in the filter press (1) in the vertical direction; Extension block (11), the extension block (11) is fixedly installed on the top of the front side wall of the platform (10), and the extension block (11) is located above the pressure plate (2); A drive rod (12) is fixedly installed on the top right side wall of the platform (10), and the drive rod (12) is L-shaped. A trigger (16) is disposed above the drive rod (12); A pusher assembly is disposed on the front side of the filter press (1).

2. The urban river and lake silt dewatering device according to claim 1, characterized in that: The filter press (1) is equipped with support feet (29) at the bottom.

3. The urban river and lake silt dewatering device according to claim 2, characterized in that: The pressure plate (2) moves vertically via a driving unit, the driving unit comprising: Support arm (13), the support arm (13) is provided in two sets, and the two sets of support arms (13) are respectively vertically installed on the rear side of the top of the support leg (29); Mounting arm (14), which is mounted on the top end of the support arm (13); Guide seat (15), the guide seat (15) is installed vertically on the side wall of the mounting arm (14); An extension arm (17) is fixedly installed above the guide seat (15); Motor (18), which is mounted on the extension arm (17); A lead screw (19) is mounted on the output end of the motor (18).

4. The urban river and lake silt dewatering device according to claim 3, characterized in that: The drive unit further includes: Lifting seat (20), the lifting seat (20) is threaded onto the lead screw (19); There are two connecting rods (21), and the two connecting rods (21) are installed vertically on the lower surface of the lifting seat (20). The bottom end of the connecting rod (21) is fixedly connected to the upper surface of the pressure plate (2). The lifting arm (22) is fixedly installed on the rear side wall of the lifting seat (20); The guide rod (23) is installed vertically in the inner cavity of the guide seat (15), and the lifting arm (22) is slidably sleeved on the guide rod (23) in the vertical direction.

5. The urban river and lake silt dewatering device according to claim 1, characterized in that: The bottom of the inner wall of the discharge port (7) is located on the same horizontal line as the upper surface of the filter cloth (6).

6. The urban river and lake silt dewatering device according to claim 1, characterized in that: The filter press (1) is provided with a drain outlet (30) at the bottom, and a valve (31) is installed inside the drain outlet (30).

7. The urban river and lake silt dewatering device according to claim 1, characterized in that: The filter press (1) has a feed inlet (32) connected to the top of its side wall.

8. The urban river and lake silt dewatering device according to claim 2, characterized in that: The push component includes: The second tank (24) is located on the front side wall of the filter press (1); Pusher plate (25), which is slidably embedded in the inner cavity of the second groove (24); An extension platform (26) is fixedly installed on the front side wall of the support leg (29); Mounting base (27), which is fixedly mounted on the extension platform (26); Hydraulic cylinder (28) is mounted on the mounting base (27), and the output end of the hydraulic cylinder (28) is connected to the front side wall of the pusher plate (25).

9. A dewatering device for urban river and lake silt as described in claim 8, characterized in that: The bottom of the inner wall of the second tank (24) is located on the same horizontal line as the upper surface of the filter cloth (6).

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