Channel dredging slurry dewatering device

Abstract

This invention relates to the technical field of dredging slurry, and particularly to a dredging slurry dewatering device, comprising a housing with a dewatering device inside and a sludge discharge device at the bottom. In this dredging slurry dewatering device, the second motor of the dewatering device is activated, and its output drives the first screw to rotate. Because the first screw is threadedly engaged with a slider, and the slider can slide on a limiting rod, the slider moves axially. Simultaneously, the limiting rod drives the second screw to rotate, causing the corresponding slider to move synchronously, thereby moving the movable filter plate closer to the fixed filter plate, clamping the filter cloth to form a sealed filtration chamber. The dredging slurry treated by the feeding and stirring device is fed into the chamber. Under pressure, water permeates through the filter cloth and flows into the filtrate collection box through the filtrate tank, while solid particles form a filter cake. After a certain time or filter cake thickness, the second motor reverses, the movable filter plate retracts, and the chamber is opened for sludge discharge.

Description

Technical Field

[0001] This invention relates to the technical field of dredging slurry, and in particular to a dredging slurry dewatering device. Background Technology

[0002] Dredging mud is a mixture of water, soil particles, and various impurities produced during dredging projects. Dredging is an engineering operation conducted to deepen and widen waterways and ensure the safe passage of ships. During dredging, dredgers and other equipment excavate the mud and silt from the bottom of the waterway and mix it with a large amount of water to form dredging mud. For example, when the water depth in a port channel is insufficient due to long-term siltation, dredging operations are needed to remove the silt. The removed silt, when mixed with water, becomes dredging mud. Dredging mud has a high water content, large volume, and heavy weight. To reduce its volume for easier transportation, a dewatering device for dredging mud is particularly needed.

[0003] However, traditional waterway dredging mud dewatering devices use simple gravity settling, which is slow and difficult to reduce the mud moisture content to an ideal level. The treated mud is still relatively wet, which can easily cause the landfill site to soften and settle during subsequent landfilling. When used for resource utilization, excessive moisture content will affect product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a dewatering device for dredging slurry, which solves the problem of traditional dewatering devices for dredging slurry mentioned in the background art, which squeezes out the water from the dredging slurry by pressure filtration, thus solving the problem that traditional technology is unable to reduce the water content of the slurry to an ideal level.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a channel dredging sludge dewatering device, comprising a box body, support plates fixedly connected to both sides of the box body, support legs installed at the bottom of the support plates, foot pads installed at the bottom of the support legs, a feeding and stirring device provided on the surface of the box body, a dewatering device provided inside the box body, and a sludge discharge device provided at the bottom of the box body.

[0006] The dehydration device includes a second motor, a first screw, a limiting post, a second screw, a limiting rod, a slider, a movable filter plate, a fixed filter plate, a filter cloth, a filtrate tank, and a filtrate collection box. A second motor is installed on one side of the housing. The output end of the second motor is fixedly connected to the first screw. One end of the first screw is fixedly connected to the limiting post, and one end of the limiting post is fixedly connected to the second screw. A limiting rod is installed inside the housing. Slider blocks are slidably connected inside the first screw, the second screw, and the limiting rod. A movable filter plate is fixedly connected to the surface of the slider. A fixed filter plate is installed inside the housing. Filter cloth is also installed inside the housing. Filtrate tanks are opened on both sides of the bottom of the housing, and a filtrate collection box is installed at the bottom of the housing.

[0007] Preferably, the support legs are provided in four identical sets, and foot pads are respectively provided at the bottom of each set of support legs.

[0008] Preferably, the feeding and stirring device includes a feeding pipe, a dosing pipe, a sensor, a stirring drum, a first motor, a rotating shaft, a stirring roller, a spiral blade, and a discharge port. The feeding pipe is installed on the top of the housing, and the dosing pipe is also installed on the top of the housing. A sensor is installed on one side of the dosing pipe. The stirring drum is installed in the middle of the interior of the housing. The first motor is installed on the top of the housing. The output end of the first motor is fixedly connected to the rotating shaft. The bottom of the rotating shaft is fixedly connected to the stirring roller. The surface of the stirring roller is threaded with a spiral blade. Discharge ports are opened on both sides of the bottom of the stirring drum.

[0009] Preferably, the bottom of both the feed pipe and the dosing pipe passes through the mixing drum, and the rotating shaft forms a rotating structure with the mixing roller via a first motor.

[0010] Preferably, the first screw and the second screw cooperate with each other via a second motor and a limiting post to form a rotating structure, and the helices of the first screw and the second screw are symmetrical to each other.

[0011] Preferably, four identical sets of limiting rods are provided inside the housing, and they cooperate with the first screw and the second screw respectively to form a rotation limiting structure.

[0012] Preferably, two identical sets of filtrate collection boxes are provided at the bottom of the box, and the positions of the two sets of filtrate collection boxes correspond to the positions of the two sets of filtrate tanks.

[0013] Preferably, the sludge discharge device includes a slot, a cover plate, a locking block, a handle, a fixing pipe, a limiting groove, a limiting plate, a telescopic rod, a spring, a fixing block, and a fixing hole. The bottom of the box body has a slot, and a cover plate is installed at the bottom of the box body. Locking blocks are fixedly connected to both ends of the cover plate, and a handle is installed at the bottom of the cover plate. A fixing pipe is installed inside the cover plate, and a limiting groove is opened inside the fixing pipe. A limiting plate is slidably connected inside the limiting groove. A telescopic rod is fixedly connected to one end of the limiting plate, and a spring is wound around the outside of the telescopic rod. A fixing block is fixedly connected to one end of both the telescopic rod and the spring. A fixing hole is opened on the inner side of the bottom of the box body.

[0014] Preferably, the position of the card block corresponds to the position of the card slot, and the outer wall size of the card block matches the inner wall size of the card slot.

[0015] Preferably, the telescopic rod, through a limiting plate and a limiting groove, cooperates with the fixing block and the spring to form a telescopic structure, and the outer wall size of the fixing block matches the inner wall size of the fixing hole.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This dewatering device for dredging slurry, through the setting of the dewatering device, starts the second motor of the dewatering device, and its output end drives the first screw to rotate. Because the first screw is threadedly engaged with the slider and the slider can slide on the limiting rod, the slider moves axially. At the same time, the limiting rod drives the second screw to rotate, so that the corresponding slider moves synchronously, thereby driving the movable filter plate to approach the fixed filter plate, clamping the filter cloth to form a sealed filter chamber. The dredging slurry treated by the feeding and stirring device is sent into the chamber. Under pressure, water permeates through the filter cloth and flows into the filtrate collection box through the filtrate tank, while solid particles form a filter cake. After a certain time or filter cake thickness, the second motor reverses, the movable filter plate retracts and opens the chamber, facilitating slurry discharge. The cooperation of the first screw, the second screw and the limiting rod ensures the stable movement of the movable filter plate, achieving efficient dewatering, thereby solving the problem of poor dewatering effect in traditional methods. Attached Figure Description

[0017] Figure 1 This is a side view of the external structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the feeding and mixing device of the present invention;

[0020] Figure 4 This is a schematic diagram of the dehydration device of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the filtrate tank and filtrate collection box that cooperate with each other in this invention;

[0022] Figure 6 This is a schematic diagram of the sludge removal device of the present invention;

[0023] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0024] In the diagram: 1. Housing; 2. Support plate; 3. Support leg; 4. Foot pad; 5. Feeding and mixing device; 501. Feeding pipe; 502. Dosing pipe; 503. Sensor; 504. Mixing drum; 505. First motor; 506. Rotating shaft; 507. Mixing roller; 508. Spiral blade; 509. Discharge port; 6. Dewatering device; 601. Second motor; 602. First screw; 603. Limiting post; 604. Second screw 605. Limiting rod; 606. Sliding block; 607. Movable filter plate; 608. Fixed filter plate; 609. Filter cloth; 610. Filtration tank; 611. Filtration collection box; 7. Sludge discharge device; 701. Slot; 702. Cover plate; 703. Block; 704. Handle; 705. Fixing pipe; 706. Limiting groove; 707. Limiting plate; 708. Telescopic rod; 709. Spring; 710. Fixing block; 711. Fixing hole. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-7 The present invention provides a technical solution: a channel dredging slurry dewatering device, including a box body 1, support plates 2 fixedly connected to both sides of the box body 1, support legs 3 installed at the bottom of the support plates 2, foot pads 4 installed at the bottom of the support legs 3, a feeding and stirring device 5 provided on the surface of the box body 1, a dewatering device 6 provided inside the box body 1, and a sludge discharge device 7 provided at the bottom of the box body 1.

[0027] The dehydration device 6 includes a second motor 601, a first screw 602, a limiting post 603, a second screw 604, a limiting rod 605, a slider 606, a movable filter plate 607, a fixed filter plate 608, a filter cloth 609, a filtrate tank 610, and a filtrate collection box 611. The second motor 601 is installed on one side of the housing 1. The output end of the second motor 601 is fixedly connected to the first screw 602. One end of the first screw 602 is fixedly connected to the limiting post 603, and one end of the limiting post 603 is fixedly connected to the second screw 604. The limiting rod 605 is installed inside the housing 1. Slider 606 is slidably connected inside the first screw 602, the second screw 604, and the limiting rod 605. A movable filter plate 607 is fixedly connected to the surface of the slider 606. 7. A fixed filter plate 608 is installed inside the housing 1, and a filter cloth 609 is also installed inside the housing 1. Filtration tanks 610 are opened on both sides of the bottom of the housing 1, and a filtrate collection box 611 is installed at the bottom of the housing 1. Through the setting of the dehydration device 6, the second motor 601 is started, and its output end drives the first screw 602, which is fixedly connected to it, to start rotating. Since the first screw 602 and the slider 606 are threadedly engaged and the slider 606 can slide on the limiting rod 605, during the rotation of the first screw 602, the slider 606 will move axially along the first screw 602. At the same time, the limiting post 603 fixedly connected to one end of the first screw 602 will drive the second screw 604 to rotate synchronously, so that the slider 606 on the second screw 604 also... The sliders 606, with their surfaces fixedly connected to the movable filter plates 607, move axially. As the sliders 606 move, the movable filter plates 607 move towards the fixed filter plates 608. As the movable filter plates 607 approach the fixed filter plates 608, the filter cloth 609 installed inside the housing 1 is sandwiched between them. The movable filter plates 607 continue to move, eventually forming a tight seal with the fixed filter plates 608, creating sealed filter chambers. At this point, the dredging slurry is fed into these chambers by the feeding and mixing device 5. Water in the slurry passes through the filter cloth 609 under pressure. Since the pores of the filter cloth 609 only allow water molecules to pass through, the water in the slurry... Solid particles are intercepted on one side of the filter cloth 609. The filtrate passing through the filter cloth 609 flows downwards along the filtrate channels 610 opened on both sides of the bottom of the housing 1, and finally flows into the filtrate collection box 611 installed at the bottom of the housing 1 for collection, so as to facilitate subsequent treatment and discharge. As the filtration process continues, solid particles accumulate in the filtration chamber and gradually form a filter cake. When a certain filtration time is reached or the filter cake reaches a certain thickness, the second motor 601 is reversed, causing the movable filter plate 607 to move away from the fixed filter plate 608, opening the filtration chamber, so that the subsequent sludge discharge device 7 can discharge the filter cake from the housing 1. In the entire dewatering process, the first screw 602, the second screw 604, and the limiting rod 605 cooperate with each other.This ensures the stability and accuracy of the movement of the movable filter plate 607, enabling the dewatering device 6 to efficiently and stably complete the dewatering of dredged slurry from the waterway.

[0028] Furthermore, the support legs 3 are provided in four identical sets, and foot pads 4 are respectively set at the bottom of each set of support legs 3. Through the setting of support legs 3 and foot pads 4, the four sets of support legs 3 are evenly distributed under the box 1, which can effectively distribute the weight of the device and avoid the device tilting or shaking due to uneven local force. This ensures that the equipment remains stable during the mud dewatering operation and will not be displaced due to vibration or other external forces. It also ensures the normal operation of each component of the dewatering device and maintains the continuity and stability of the dewatering operation. The setting of foot pads 4 further optimizes the support effect and also has a shock absorption effect.

[0029] Furthermore, the feeding and mixing device 5 includes a feeding pipe 501, a dosing pipe 502, a sensor 503, a mixing drum 504, a first motor 505, a rotating shaft 506, a mixing roller 507, a spiral blade 508, and a discharge port 509. The feeding pipe 501 is installed on the top of the housing 1, and the dosing pipe 502 is also installed on the top of the housing 1. The sensor 503 is installed on one side of the dosing pipe 502. The mixing drum 504 is installed in the middle of the interior of the housing 1, and the first motor 505 is installed on the top of the housing 1. The output end of the first motor 505 is fixedly connected to a rotating shaft 506. A rotating shaft 506 has a stirring roller 507 fixedly connected to its bottom. A spiral blade 508 is threaded onto the surface of the stirring roller 507. Discharge ports 509 are located on both sides of the bottom of the mixing drum 504. Through the feeding and stirring device 5, slurry collected from the waterway flows into the mixing drum 504 via the feed pipe 501. Simultaneously, based on the characteristics of the slurry and dewatering requirements, chemicals are delivered to the mixing drum 504 via the dosing pipe 502. A sensor 503 on one side of the dosing pipe 502 plays a crucial role, monitoring parameters such as the slurry flow rate and concentration in real time. Data is fed back to the control system, which then precisely adjusts the dosage of chemicals in the dosing pipeline 502 to ensure the optimal ratio of chemicals to mud. The first motor 505 is activated, its output driving the rotating shaft 506 to rotate at high speed. The stirring roller 507, fixedly connected to the bottom of the rotating shaft 506, also rotates rapidly. During rotation, the spiral blades 508 threaded onto the surface of the stirring roller 507 thoroughly mix the mud and chemicals, promoting a chemical reaction and allowing the chemicals to better exert their coagulant effect, accelerating the agglomeration of solid particles in the mud. On the other hand… The special structure of the spiral blade 508 can drive the mixed material to circulate up and down in the mixing drum 504, further enhancing the mixing effect and ensuring that the material is mixed evenly. As the mixing continues, the fully mixed mud and reagents gradually gather at the bottom of the mixing drum 504. The discharge ports 509 on both sides of the bottom of the mixing drum 504 are opened after the material reaches a certain amount and the mixing is even. The mixed material is transported through the discharge ports 509 to the dewatering device 6 inside the box 1 for subsequent dewatering operations, providing uniform and fully reacted raw materials for the entire mud dewatering process.

[0030] Furthermore, the bottoms of both the feed pipe 501 and the dosing pipe 502 penetrate the mixing drum 504. The rotating shaft 506, through the first motor 505 and the stirring roller 507, forms a rotating structure. The arrangement of the feed pipe 501, dosing pipe 502, first motor 505, rotating shaft 506, and stirring roller 507 enables a precise and efficient mixing process between the slurry and the chemicals. The feed pipe 501, inserted directly into the bottom of the mixing drum 504, allows the slurry to quickly and directly enter the core mixing area, preventing material accumulation at the inlet. The dosing pipe 502 also penetrates the bottom, ensuring that the chemicals can contact the slurry immediately, creating conditions for thorough mixing. The first motor 505 drives the rotating shaft 506 and the stirring roller 507 to rotate. When the stirring roller 507 rotates at high speed, it quickly disperses the newly entered slurry and chemicals, preventing uneven mixing and ensuring the chemicals are rapidly and evenly distributed in the slurry. This provides excellent pretreatment for subsequent dewatering operations, improving overall dewatering efficiency and quality.

[0031] Furthermore, the first screw 602, through the second motor 601 and the limiting post 603, cooperates with the second screw 604 to form a rotating structure. The spirals of the first screw 602 and the second screw 604 are symmetrical. The arrangement of the second motor 601, the first screw 602, the limiting post 603, and the second screw 604 gives the movable filter plate 607 stable and precise movement capability. After the second motor 601 is started, it drives the first screw 602 and the second screw 604 to rotate synchronously through the limiting post 603. Since the two are spirally symmetrical, the slider 606 installed on them can move smoothly at the same speed but in opposite directions, thereby driving the movable filter plate 607 connected to it to move closer to or further away from the fixed filter plate 608. This precise control ensures that the formation and opening process of the filter chamber is stable and reliable. During filtration, it can ensure that the filter plates fit tightly to prevent slurry leakage. During slurry discharge, it can accurately control the spacing between the filter plates to facilitate the discharge of filter cake, thereby improving the stability and reliability of the dewatering device 6.

[0032] Furthermore, four identical sets of limiting rods 605 are arranged inside the housing 1, and they cooperate with the first screw 602 and the second screw 604 respectively to form a rotation limiting structure. The setting of the limiting rods 605 greatly enhances the stability and accuracy of the movement of the slider 606 and the movable filter plate 607. The four sets of limiting rods 605 are evenly distributed, providing multiple support and guide points for the slider 606. When the first screw 602 and the second screw 604 drive the slider 606 to move, the limiting rods 605 can effectively restrict the slider 606 to move only in the axial direction, avoiding swaying, deviation and other situations. This not only ensures the parallelism of the movable filter plate 607 when it approaches or moves away from the fixed filter plate 608, making the sealing performance between the filter plates better and preventing the mud from seeping out from the gaps during the filtration process, but also extends the service life of the equipment and reduces the wear caused by component shaking and friction.

[0033] Furthermore, two identical sets of filtrate collection boxes 611 are provided at the bottom of the housing 1, and the positions of the two sets of filtrate collection boxes 611 correspond to the positions of the two sets of filtrate tanks 610. Through the setting of the filtrate collection boxes 611, efficient collection and centralized treatment of filtrate are achieved. The corresponding setting of the two sets ensures that the filtrate flowing down from the filtrate tank 610 can fall into the filtrate collection box 611 accurately, avoiding filtrate spillage, environmental pollution and resource waste. The collected filtrate can be uniformly purified to meet the emission standards or recycling standards, which meets environmental protection requirements. At the same time, it is also convenient to monitor and analyze the quantity and composition of the filtrate, providing data support for the optimization of the entire dewatering process, and helping to carry out the dewatering operation of waterway dredging mud in a more scientific, environmentally friendly and efficient manner.

[0034] Furthermore, the sludge removal device 7 includes a slot 701, a cover plate 702, a locking block 703, a handle 704, a fixing pipe 705, a limiting groove 706, a limiting plate 707, a telescopic rod 708, a spring 709, a fixing block 710, and a fixing hole 711. The bottom of the housing 1 has a slot 701, and a cover plate 702 is installed at the bottom of the housing 1. Locking blocks 703 are fixedly connected to both ends of the cover plate 702. A handle 704 is installed at the bottom of the cover plate 702. A fixing pipe 705 is installed inside the cover plate 702. A limiting groove 706 is opened inside the fixing pipe 705. A limiting plate 707 is slidably connected inside the limiting groove 706. One end of the limiting plate 707 is fixedly connected to... A telescopic rod 708 has a spring 709 wound around its outer side. Both the telescopic rod 708 and the spring 709 are fixedly connected to a fixing block 710 at one end. A fixing hole 711 is provided on the inner side of the bottom of the housing 1. Through the mud discharge device 7, the operator holds the handle 704 and slowly pulls it downwards. At this time, because the handle 704 is connected to the cover plate 702, under the pulling force, the locking blocks 703 at both ends of the cover plate 702 slide downwards along the locking grooves 701 at the bottom of the housing 1. As the cover plate 702 moves downwards, the internal structure of the fixing tube 705 also changes accordingly. The downward pulling force is transmitted through the fixing tube 705 to the limiting plate 707, causing it to move within the limiting groove 701. 6. Sliding inwards, since the limiting plate 707 is fixedly connected to the telescopic rod 708, the telescopic rod 708 also moves inwards and is gradually retracted into the limiting groove 706. During the retraction of the telescopic rod 708, it drives the fixing block 710 to move synchronously. The fixing block 710, which was originally stuck in the fixing hole 711 on the inner side of the bottom of the box 1, gradually disengages from the fixing hole 711 as the telescopic rod 708 retracts. When the fixing block 710 is completely disengaged from the fixing hole 711, the cover plate 702 is no longer restricted and can continue to move downwards until the sludge discharge port is fully opened. At this time, the filter cake is smoothly discharged from the bottom of the box 1 under the action of gravity. After the sludge discharge is completed, the operator... The operator reverses the operation, pushing handle 704 upwards. As handle 704 moves upwards, cover 702 slides upwards again along slot 701. At the same time, spring 709, which had stored elastic potential energy due to previous compression, begins to release energy, pushing fixing block 710 outwards. Fixing block 710 drives telescopic rod 708 and limiting plate 707 to slide outwards within limiting groove 706. When cover 702 rises to the appropriate position, limiting plate 707 aligns with fixing hole 711. Under the elastic force of spring 709, fixing block 710 quickly engages in fixing hole 711, firmly fixing cover 702 and completing the reset of the mud discharge device, preparing for the next mud discharge.

[0035] Furthermore, the position of the locking block 703 corresponds to the position of the locking slot 701, and the outer wall size of the locking block 703 matches the inner wall size of the locking slot 701. Through the setting of the locking slot 701 and the locking block 703, the precise docking and tight installation between the cover plate 702 and the box 1 are achieved. The precise matching of the two dimensions allows the locking block 703 to be easily and tightly embedded in the locking slot 701. During installation, the operator can quickly position the cover plate 702 at the bottom of the box 1, which greatly improves the installation efficiency. During the operation of the device, this tight connection can effectively prevent the cover plate 702 from loosening or shifting due to external forces such as vibration and shaking, ensuring that the sludge discharge device is always in a stable working state. At the same time, the tight connection can also prevent external impurities from entering the sludge discharge port, preventing interference with the discharge of filter cake and ensuring the smoothness and efficiency of sludge discharge.

[0036] Furthermore, the telescopic rod 708, through the limiting plate 707 and the limiting groove 706, cooperates with the fixing block 710 and the spring 709 to form a telescopic structure. The outer wall size of the fixing block 710 matches the inner wall size of the fixing hole 711. Through the setting of the fixing block 710 and the fixing hole 711, the cover plate 702 is securely locked. When it is necessary to close the sludge discharge port, under the elastic force of the spring 709, the fixing block 710 can accurately and correctly engage with the fixing hole 711. The close fit ensures a firm connection between the two, preventing the cover plate 702 from accidentally opening when the sludge discharge device is not activated. This ensures the sealing of the inside of the chamber 1 during the dewatering process and avoids sludge leakage. When it is necessary to open the sludge discharge port, the operator operates the handle 704 to retract the telescopic rod 708, causing the fixing block 710 to disengage from the fixing hole 711. The operation is simple and can accurately control the timing of sludge discharge, ensuring the orderly progress of the entire sludge discharge process.

[0037] Working principle: First, the dredger continuously transports the collected channel dredging slurry to the feeding and mixing device 5 through a supporting conveying pipeline. The slurry flows directly down the feeding pipeline 501 to the bottom of the mixing drum 504. At the same time, the dosing pipeline 502 precisely delivers flocculant based on the slurry parameters fed back by the sensor 503, starts the first motor 505, and the rotating shaft 506 drives the mixing roller 507 to rotate rapidly. The spiral blades 508 stir and push the slurry and the agent up and down to circulate, so as to fully mix them. As the stirring continues, the solid particles in the slurry gradually agglomerate, creating favorable conditions for subsequent dewatering. When the slurry in the mixing drum 504 reaches a certain level... After the materials are mixed evenly and reach a certain quantity, the discharge port 509 opens, and the mixture flows into the dewatering device 6. At this time, the second motor 601 starts, and the first screw 602 and the second screw 604 rotate synchronously, driving the movable filter plate 607 to approach the fixed filter plate 608. The filter cloth 609 is clamped, forming a sealed filtration chamber. After the mixture enters the chamber, under pressure, water passes through the filter cloth 609 and flows into the filtrate collection box 611 through the filtrate tank 610. Solid particles remain in the filter chamber and gradually accumulate to form a filter cake. As the filter cake continues to thicken, when the preset filtration time or filter cake thickness is reached, the second motor 601 reverses, and the movable filter plate 607 moves closer to the fixed filter plate 608. 7. Reverse the flow path, open the filter chamber, and the operator approaches the sludge discharge device 7. Grasp handle 704 and pull downwards. The locking block 703 slides down along the slot 701, and the fixing block 710 disengages from the fixing hole 711. The cover plate 702 opens, and the filter cake is discharged from the housing 1 under gravity. After sludge discharge, the operator pushes handle 704 upwards, the cover plate 702 resets, and the fixing block 710 re-engages into the fixing hole 711 under the action of spring 709, completing the reset of the sludge discharge device 7. The filtrate collected in the filtrate collection box 611 is transported to specialized purification equipment. After a series of treatment processes including sedimentation, filtration, and disinfection, it meets emission standards. The sludge is then discharged into natural water bodies or recycled for purposes such as site dust suppression and equipment cleaning. Throughout the entire process, the support legs 3 and foot pads 4 provide stable support for the device, ensuring the stable operation of each component. At the same time, the operator will monitor the equipment's operating status in real time, checking key parameters such as feed rate, chemical dosage, dewatering pressure, and filtrate quality. The operator will adjust the equipment's operating parameters in a timely manner according to the actual situation to ensure that the dewatering of dredged mud is carried out efficiently, stably, and environmentally friendly. The first motor 505 and the second motor 601 are both model Y315S-2. This completes the usage process of a dredged mud dewatering device.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dewatering device for dredging slurry, comprising a housing (1), characterized in that: The box (1) is fixedly connected to the two sides of the support plate (2), the bottom of the support plate (2) is equipped with the support leg (3), the bottom of the support leg (3) is equipped with the foot pad (4), the surface of the box (1) is provided with the feeding and stirring device (5), the inside of the box (1) is provided with the dewatering device (6), and the bottom of the box (1) is provided with the mud discharge device (7). The dehydration device (6) includes a second motor (601), a first screw (602), a limiting post (603), a second screw (604), a limiting rod (605), a slider (606), a movable filter plate (607), a fixed filter plate (608), a filter cloth (609), a filtrate tank (610), and a filtrate collection box (611). The second motor (601) is installed on one side of the housing (1). The output end of the second motor (601) is fixedly connected to the first screw (602). One end of the first screw (602) is fixedly connected to the limiting post (603). One end is fixedly connected to a second screw (604), and a limiting rod (605) is installed on the inner side of the box (1). A slider (606) is slidably connected inside the first screw (602), the second screw (604) and the limiting rod (605). A movable filter plate (607) is fixedly connected to the surface of the slider (606). A fixed filter plate (608) is installed inside the box (1). A filter cloth (609) is also installed inside the box (1). Filtration tanks (610) are opened on both sides of the bottom of the box (1). A filtrate collection box (611) is installed at the bottom of the box (1). The first screw (602) is connected to the second screw (604) via the second motor (601) and the limiting post (603) to form a rotating structure. The spirals of the first screw (602) and the second screw (604) are symmetrical to each other. The limiting rod (605) is provided in four identical sets inside the housing (1), and each set cooperates with the first screw (602) and the second screw (604) to form a rotation limiting structure.

2. The waterway dredging mud dewatering device according to claim 1, characterized in that: The support legs (3) are provided in four identical sets, and the foot pads (4) are respectively provided at the bottom of each set of support legs (3).

3. The waterway dredging mud dewatering device according to claim 1, characterized in that: The feeding and stirring device (5) includes a feeding pipe (501), a dosing pipe (502), a sensor (503), a stirring drum (504), a first motor (505), a rotating shaft (506), a stirring rod (507), a spiral blade (508), and a discharge port (509). The feeding pipe (501) is installed on the top of the box (1), and the dosing pipe (502) is also installed on the top of the box (1). A sensor (503) is installed on one side of the dosing pipe (502). The stirring drum (504) is installed in the middle of the inside of the box (1). The first motor (505) is installed on the top of the box (1). The output end of the first motor (505) is fixedly connected to the rotating shaft (506). The bottom of the rotating shaft (506) is fixedly connected to the stirring rod (507). The surface of the stirring rod (507) is threaded with a spiral blade (508). The bottom of the stirring drum (504) has discharge ports (509) on both sides.

4. The dewatering device for dredging slurry according to claim 3, characterized in that: The bottom of both the feed pipe (501) and the dosing pipe (502) passes through the stirring cylinder (504), and the rotating shaft (506) forms a rotating structure with the stirring rod (507) via the first motor (505).

5. The dewatering device for dredging slurry according to claim 1, characterized in that: The filtrate collection boxes (611) are provided in two identical sets at the bottom of the box body (1), and the positions of the two sets of filtrate collection boxes (611) correspond to the positions of the two sets of filtrate tanks (610).

6. The dewatering device for dredging slurry according to claim 1, characterized in that: The sludge removal device (7) includes a slot (701), a cover plate (702), a locking block (703), a handle (704), a fixing pipe (705), a limiting groove (706), a limiting plate (707), a telescopic rod (708), a spring (709), a fixing block (710), and a fixing hole (711). The bottom of the box (1) is provided with a slot (701), and the bottom of the box (1) is provided with a cover plate (702). The two ends of the cover plate (702) are fixedly connected with locking blocks (703), and the bottom of the cover plate (702) is provided with a handle (704). 04), a fixing tube (705) is installed inside the cover plate (702). A limiting groove (706) is opened inside the fixing tube (705). A limiting plate (707) is slidably connected inside the limiting groove (706). A telescopic rod (708) is fixedly connected to one end of the limiting plate (707). A spring (709) is wound around the outside of the telescopic rod (708). A fixing block (710) is fixedly connected to one end of both the telescopic rod (708) and the spring (709). A fixing hole (711) is opened on the inner side of the bottom of the box (1).

7. The dewatering device for dredging slurry according to claim 6, characterized in that: The position of the card block (703) corresponds to the position of the card slot (701), and the outer wall size of the card block (703) matches the inner wall size of the card slot (701).

8. A dewatering device for dredging slurry according to claim 6, characterized in that: The telescopic rod (708) is connected to the fixing block (710) and the spring (709) through the limiting plate (707) and the limiting groove (706) to form a telescopic structure. The outer wall size of the fixing block (710) matches the inner wall size of the fixing hole (711).

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