Channel dredging mud dewatering device

Abstract

The invention relates to the related technical field of channel dredging mud, in particular to a channel dredging mud dewatering device which comprises a box body, a dewatering device body is arranged in the box body, and a mud discharging device is arranged at the bottom of the box body. According to the channel dredging mud dewatering device, through the arrangement of the dewatering device, a second motor of the dewatering device is started, the output end of the second motor drives a first screw rod to rotate, the first screw rod is in threaded fit with a sliding block, the sliding block can slide on a limiting rod, the sliding block moves in the axial direction, meanwhile, a limiting column drives the second screw rod to rotate, and the corresponding sliding block moves synchronously; the movable filter plate is driven to approach the fixed filter plate and the clamping filter cloth to form a sealed filter chamber, channel dredging slurry treated by the feed stirring device is fed into the chamber, water penetrates through the filter cloth and flows into a filtrate collecting box through a filtrate groove under pressure, solid particles form a filter cake, and after a certain time or the thickness of the filter cake is reached, a second motor rotates reversely to drive the filter cake to flow into the filter chamber. The movable filter plate retreats to open the chamber, so that sludge discharge is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field related to waterway dredging mud, and in particular to a waterway dredging mud dewatering device. Background Art

[0002] Channel dredging mud is a mixture of water, soil particles and various impurities produced in channel dredging projects. Channel dredging is an engineering operation carried out to deepen and widen the channel and ensure the safe passage of ships. During the dredging process, dredgers and other equipment will excavate the mud, silt, etc. at the bottom of the channel and mix them with a large amount of water to form channel dredging mud. For example, when the port channel is not deep enough due to long-term siltation, dredging operations are required to clear the silt. These cleared silts are mixed with water to become dredging mud. Channel dredging mud has a high water content, a large volume and a large weight. In order to reduce its volume for easy transportation, a channel dredging mud dewatering device is particularly needed.

[0003] However, the traditional channel dredging mud dewatering equipment uses simple gravity sedimentation, which has a slow processing speed and is difficult to reduce the mud moisture content to an ideal level. The treated mud is still relatively moist, which can easily cause the landfill site to become soft and subside during subsequent landfilling. When used for resource utilization, excessive moisture content will affect product quality. Summary of the invention

[0004] The object of the present invention is to provide a channel dredging mud dewatering device to solve the problem of a traditional channel dredging mud dewatering device proposed in the above background technology. It is capable of squeezing out the water from the channel dredging mud by filtering, thus solving the problem that it is difficult for traditional technology to reduce the water content of the mud to an ideal level.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a channel dredging mud dewatering device, comprising a box body, support plates are fixedly connected to both sides of the box body, support legs are installed at the bottom of the support plates, and foot pads are installed at the bottom of the support legs. A feed stirring device is arranged on the surface of the box body, a dewatering device is arranged inside the box body, and a mud discharge device is arranged at the bottom of the box body;

[0006] The dehydration device includes a second motor, a first screw, a limiting column, a second screw, a limiting rod, a slider, a movable filter plate, a fixed filter plate, a filter cloth, a filtrate trough and a filtrate collecting box. The second motor is installed on one side of the box body, 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 column, one end of the limiting column is fixedly connected to the second screw, the limiting rod is installed on the inner side of the box body, the first screw, the second screw and the limiting rod are all slidably connected to the inside of the slider, the movable filter plate is fixedly connected to the surface of the slider, the fixed filter plate is installed inside the box body, the filter cloth is also installed inside the box body, filtrate troughs are opened on both sides of the bottom of the box body, and a filtrate collecting box is installed at the bottom of the box body.

[0007] Preferably, the supporting legs are provided in four identical groups, and foot pads are respectively provided at the bottom of each group of supporting legs.

[0008] Preferably, the feed stirring device includes a feed pipe, a dosing pipe, a sensor, a stirring drum, a first motor, a rotating shaft, a stirring stick, a spiral blade and a discharge port. The feed pipe is installed on the top of the box body, and the dosing pipe is also installed on the top of the box body. A sensor is installed on one side of the dosing pipe. A stirring drum is installed in the middle of the inside of the box body, and the first motor is installed on the top of the box body. The output end of the first motor is fixedly connected to the rotating shaft, and the bottom of the rotating shaft is fixedly connected to the stirring stick. The surface of the stirring stick is threadedly connected to the spiral blade, and discharge ports are opened on both sides of the bottom of the stirring drum.

[0009] Preferably, the bottoms of the feed pipe and the dosing pipe both pass through the mixing drum, and the rotating shaft forms a rotating structure through the first motor and the stirring rod.

[0010] Preferably, the first screw rod cooperates with the second screw rod through the second motor via a limiting column to form a rotating structure, and the spirals of the first screw rod and the second screw rod are symmetrical to each other.

[0011] Preferably, four identical groups of the limiting rods are arranged inside the box body, and cooperate with the first screw rod and the second screw rod to form a rotation limiting structure.

[0012] Preferably, two identical groups of filtrate collecting boxes are arranged at the bottom of the box body, and the positions of the two groups of filtrate collecting boxes correspond to the positions of the two groups of filtrate troughs.

[0013] Preferably, the mud discharge device includes a card slot, a cover plate, a card block, a handle, a fixed tube, a limit slot, a limit plate, a telescopic rod, a spring, a fixed block and a fixed hole. A card slot is provided at the bottom of the box body, a cover plate is installed at the bottom of the box body, blocks are fixedly connected at both ends of the cover plate, a handle is installed at the bottom of the cover plate, a fixed tube is installed inside the cover plate, a limit slot is provided inside the fixed tube, a limit plate is slidably connected inside the limit slot, one end of the limit plate is fixedly connected to the telescopic rod, a spring is wound around the outside of the telescopic rod, one end of the telescopic rod and the spring are fixedly connected to the fixed block, and a fixing hole is provided 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 cooperates with the fixing block and the spring through the limiting plate via the limiting groove 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: the waterway dredging mud dewatering device, 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 cooperates with the slider thread, and the slider can slide on the limit rod, the slider moves axially. At the same time, the limit column drives the second screw to rotate, so that the corresponding slider moves synchronously, and then drives the movable filter plate to approach the fixed filter plate, clamps the filter cloth to form a sealed filter chamber, and the waterway dredging mud treated by the feed stirring device is sent into the chamber. Under pressure, water penetrates the filter cloth and flows into the filtrate collecting box through the filtrate trough, and the solid particles form a filter cake. After a certain time or filter cake thickness is reached, the second motor reverses, and the movable filter plate retreats to open the chamber for convenient mud discharge. The first screw, the second screw and the limit rod cooperate to ensure the stable movement of the movable filter plate, achieve efficient dehydration, and thus solve the problem of poor traditional dehydration effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0021] Figure 5 This is a schematic diagram of the structure of the filtrate tank and the filtrate collecting box cooperating with each other in the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the mud discharge device of the present invention;

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

[0024] In the figure: 1, box body; 2, support plate; 3, support leg; 4, foot pad; 5, feeding stirring device; 501, feeding pipe; 502, dosing pipe; 503, sensor; 504, stirring drum; 505, first motor; 506, rotating shaft; 507, stirring stick; 508, spiral sheet; 509, discharge port; 6, dehydration device; 601, second motor; 602, first screw; 603, limit column; 604, second screw Rod; 605, limit rod; 606, slider; 607, movable filter plate; 608, fixed filter plate; 609, filter cloth; 610, filtrate tank; 611, filtrate collecting box; 7, mud discharge device; 701, slot; 702, cover plate; 703, block; 704, handle; 705, fixed tube; 706, limit slot; 707, limit plate; 708, telescopic rod; 709, spring; 710, fixed block; 711, fixed hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-7 The present invention provides a technical solution: a channel dredging mud dewatering device, comprising a box body 1, support plates 2 are fixedly connected to both sides of the box body 1, support legs 3 are installed at the bottom of the support plates 2, and foot pads 4 are installed at the bottom of the support legs 3. A feed stirring device 5 is arranged on the surface of the box body 1, a dewatering device 6 is arranged inside the box body 1, and a mud discharge device 7 is arranged at the bottom of the box body 1;

[0027] The dehydration device 6 includes a second motor 601, a first screw 602, a limiting column 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 collecting box 611. The second motor 601 is installed on one side of the box body 1, and 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 column 603, and one end of the limiting column 603 is fixedly connected to the second screw 604. A limiting rod 605 is installed on the inner side of the box body 1, and the first screw 602, the second screw 604 and the limiting rod 605 are all slidably connected to the inside of the slider 606, and the surface of the slider 606 is fixedly connected to the movable filter plate 60 7. A fixed filter plate 608 is installed inside the box 1, and a filter cloth 609 is also installed inside the box 1. Filtrate grooves 610 are provided on both sides of the bottom of the box 1, and a filtrate collecting box 611 is installed at the bottom of the box 1. Through the setting of the dehydration device 6, the second motor 601 is started, and its output end drives the first screw 602 fixedly connected thereto to start rotating. Since the first screw 602 and the slider 606 are threadedly matched 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 column 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 movable filter plate 607 is fixedly connected to the movable filter plate 607 on the surface, so the movement of the slider 606 will drive the movable filter plate 607 to move toward the fixed filter plate 608. As the movable filter plate 607 gradually approaches the fixed filter plate 608, the filter cloth 609 installed inside the box body 1 is sandwiched between the movable filter plate 607 and the fixed filter plate 608. The movable filter plate 607 continues to move and fits tightly with the fixed filter plate 608, thereby forming sealed filter chambers between the two. At this time, the waterway dredging mud is transported to these filter chambers under the action of the feeding stirring device 5, and the moisture in the mud penetrates the filter cloth 609 under the action of pressure. Since the pores of the filter cloth 609 can only allow water molecules to pass through, Solid particles are intercepted on one side of the filter cloth 609, and the filtrate that passes through the filter cloth 609 will flow downward along the filtrate grooves 610 opened on both sides of the bottom of the box body 1, and finally flow into the filtrate collection box 611 installed at the bottom of the box body 1 for collection for subsequent treatment and discharge. As the filtration process continues, solid particles are continuously accumulated in the filter 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 controlled to reverse, so that the movable filter plate 607 moves in a direction away from the fixed filter plate 608, opening the filter chamber, so that the subsequent mud discharge device 7 can discharge the filter cake from the box body 1. During the entire dehydration process, the first screw 602, the second screw 604 and the limit rod 605 cooperate with each other.The stability and accuracy of the movement of the movable filter plate 607 are ensured, so that the dewatering device 6 can efficiently and stably complete the dewatering of the channel dredging mud.

[0028] Furthermore, four identical groups of supporting legs 3 are provided, and foot pads 4 are respectively provided at the bottom of each group of supporting legs 3. Through the provision of supporting legs 3 and foot pads 4, four groups of supporting legs 3 are evenly distributed under the box body 1, which can effectively disperse the weight of the device and avoid tilting or shaking of the device due to local uneven force, thereby ensuring that during the mud dewatering operation, the equipment always remains in a stable state and will not be displaced due to vibration or other external forces, thereby ensuring the normal operation of various components of the dewatering device and maintaining the continuity and stability of the dewatering operation. The provision of foot pads 4 further optimizes the supporting effect and has a shock-absorbing effect.

[0029] Furthermore, the feeding and stirring device 5 includes a feeding pipeline 501, a dosing pipeline 502, a sensor 503, a stirring drum 504, a first motor 505, a rotating shaft 506, a stirring stick 507, a spiral blade 508 and a discharge port 509. The feeding pipeline 501 is installed on the top of the box body 1, and the dosing pipeline 502 is also installed on the top of the box body 1. The sensor 503 is installed on one side of the dosing pipeline 502. The stirring drum 504 is installed in the middle of the box body 1. The first motor 505 is installed on the top of the box body 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 with a stirring rod 507, and the surface of the stirring rod 507 is threadedly connected with a spiral piece 508. The bottom of the stirring drum 504 is provided with discharge ports 509 on both sides. Through the setting of the feeding stirring device 5, the mud collected from the waterway flows into the stirring drum 504 through the feeding pipe 501. At the same time, according to the characteristics of the mud and the dehydration requirements, the agent is transported to the stirring drum 504 through the dosing pipe 502. The sensor 503 on one side of the dosing pipe 502 plays a key role. It monitors the flow rate, concentration and other parameters of the mud in real time, and The data is fed back to the control system, and the control system accurately adjusts the dosage of the agent in the dosing pipe 502 based on the data to ensure that the agent and the mud reach the best ratio, and starts the first motor 505, whose output end drives the rotating shaft 506 to rotate at a high speed, and the stirring rod 507 fixedly connected to the bottom of the rotating shaft 506 also rotates rapidly. During the rotation process, the spiral piece 508 threadedly connected to the surface of the stirring rod 507 fully mixes the mud and the agent, promotes the occurrence of chemical reactions, enables the agent to better play a coagulant role, and accelerates the agglomeration of solid particles in the mud; on the other hand, The special structure of the spiral blade 508 can promote the mixed material to circulate up and down in the mixing drum 504, further enhancing the stirring effect and ensuring that the materials are evenly mixed. As the stirring continues, the fully mixed mud and reagents gradually gather at the bottom of the mixing drum 504. The discharge ports 509 opened on both sides of the bottom of the mixing drum 504 are opened after the material reaches a certain amount and the stirring uniformity is achieved. The mixed material is transported to the dehydration device 6 inside the box 1 through the discharge ports 509 for subsequent dehydration operations, providing uniform and fully reacted raw materials for the entire mud dehydration process.

[0030] Furthermore, the bottom of the feed pipe 501 and the dosing pipe 502 both pass through the mixing drum 504, and the rotating shaft 506 forms a rotating structure through the first motor 505 and the stirring rod 507. Through the arrangement of the feed pipe 501, the dosing pipe 502, the first motor 505, the rotating shaft 506 and the stirring rod 507, an accurate and efficient mixing process of the mud and the agent is realized. The feed pipe 501 is directly inserted into the bottom of the mixing drum 504, so that the mud can quickly and directly enter the core area of ​​the mixing, and avoid the accumulation of materials at the entrance; the dosing pipe 502 also passes through the bottom to ensure that the agent can contact the mud at the first time, creating conditions for subsequent sufficient mixing. The first motor 505 drives the rotating shaft 506 and the stirring rod 507 to rotate. When the stirring rod 507 rotates at high speed, it can quickly break up the mud and agent that have just entered to prevent uneven mixing, so that the agent can be quickly and evenly distributed in the mud, providing good pretreatment for subsequent dehydration operations and improving the overall dehydration efficiency and quality.

[0031] Furthermore, the first screw 602 cooperates with the second screw 604 through the second motor 601 via the limiting column 603 to form a rotating structure. The spirals of the first screw 602 and the second screw 604 are symmetrical to each other. Through the arrangement of the second motor 601, the first screw 602, the limiting column 603 and the second screw 604, the movable filter plate 607 is endowed with stable and precise movement ability. After the second motor 601 is started, the first screw 602 and the second screw 604 are synchronously driven to rotate via the limiting column 603. Since the spirals of the two are symmetrical, the slider 606 installed thereon can move smoothly at the same speed and in opposite directions, thereby driving the connected movable filter plate 607 to accurately approach or move 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 filtering, the filter plates can be closely fitted to prevent mud leakage. During mud discharge, the filter plate spacing can be accurately controlled to facilitate the discharge of filter cakes, thereby improving the stability and reliability of the operation of the dehydration device 6.

[0032] Furthermore, four identical groups of limit rods 605 are arranged inside the casing 1, and cooperate with the first screw 602 and the second screw 604 to form a rotation limit structure. The setting of the limit rods 605 greatly enhances the stability and accuracy of the slider 606 and the movable filter plate 607 during movement. The four groups of limit 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 limit rods 605 can effectively limit the slider 606 to move only in the axial direction, avoiding shaking, offset and the like. This not only ensures the parallelism of the movable filter plate 607 in the process of approaching or moving away from the fixed filter plate 608, making the sealing performance between the filter plates better and preventing mud from seeping out of the gaps during the filtration process, but also extends the service life of the equipment and reduces the loss caused by shaking and friction of components.

[0033] Furthermore, two identical groups of filtrate collecting boxes 611 are arranged at the bottom of the box body 1, and the positions of the two groups of filtrate collecting boxes 611 correspond to the positions of the two groups of filtrate troughs 610. Through the setting of the filtrate collecting boxes 611, efficient collection and centralized treatment of the filtrate is achieved. The two groups of corresponding settings ensure that the filtrate flowing down from the filtrate troughs 610 can accurately fall into the filtrate collecting boxes 611, avoiding the filtrate from spilling everywhere, causing environmental pollution and waste of resources. The collected filtrate can be uniformly subjected to subsequent purification treatment to meet the emission standards or recycling standards and meet environmental protection requirements. At the same time, it is also convenient to monitor and analyze the amount and composition of the filtrate, provide data support for the optimization of the entire dehydration process, and help the waterway dredging mud dehydration operation to be more scientific, environmentally friendly and efficient.

[0034] Further, the mud discharge device 7 includes a slot 701, a cover plate 702, a block 703, a handle 704, a fixed tube 705, a limit slot 706, a limit plate 707, a telescopic rod 708, a spring 709, a fixed block 710 and a fixed hole 711. The bottom of the box body 1 is provided with a slot 701, the bottom of the box body 1 is installed with a cover plate 702, both ends of the cover plate 702 are fixedly connected with the block 703, the bottom of the cover plate 702 is installed with a handle 704, the inside of the cover plate 702 is installed with a fixed tube 705, the inside of the fixed tube 705 is provided with a limit slot 706, the inside of the limit slot 706 is slidably connected with the limit plate 707, and one end of the limit plate 707 is fixedly connected with The telescopic rod 708 has a spring 709 wound around its outer side. One end of the telescopic rod 708 and the spring 709 are fixedly connected to a fixing block 710. A fixing hole 711 is provided on the inner side of the bottom of the box body 1. Through the setting of the mud discharge device 7, the operator holds the handle 704 and slowly pulls it downward. At this time, since the handle 704 is connected to the cover plate 702, under the action of the pulling force, the blocks 703 at both ends of the cover plate 702 slide downward along the slots 701 provided at the bottom of the box body 1. When the cover plate 702 moves downward, the structure inside the fixed pipe 705 also changes accordingly. The downward pulling force is transmitted to the limit plate 707 through the fixed pipe 705, so that it is in the limit slot 70 6 slides inwardly, and since the limit plate 707 is fixedly connected to the telescopic rod 708, the telescopic rod 708 also moves inwardly and is gradually retracted into the limit groove 706. During the retraction of the telescopic rod 708, it drives the fixing block 710 to move synchronously. The fixing block 710 originally inserted into the fixing hole 711 on the inner side of the bottom of the box body 1 is gradually disengaged from the fixing hole 711 as the telescopic rod 708 is retracted. When the fixing block 710 is completely disengaged from the fixing hole 711, the cover plate 702 loses its restriction and can continue to move downward until the mud discharge port is fully opened. At this time, the filter cake is smoothly discharged from the bottom of the box body 1 under the action of gravity. After the mud discharge is completed, the operator The operator operates in the opposite direction and pushes the handle 704 upward. As the handle 704 moves upward, the cover plate 702 slides upward along the slot 701 again. At the same time, the spring 709 stores elastic potential energy due to the previous compression, and now begins to release energy, pushing the fixed block 710 to move outward. The fixed block 710 drives the telescopic rod 708 and the limiting plate 707 to slide outward in the limiting slot 706. When the cover plate 702 rises to a suitable position, the limiting plate 707 is aligned with the fixing hole 711. Under the elastic force of the spring 709, the fixing block 710 is quickly inserted into the fixing hole 711, and the cover plate 702 is firmly fixed, completing the resetting of the mud discharge device and preparing for the next mud discharge.

[0035] Furthermore, the position of the block 703 corresponds to the position of the slot 701, and the outer wall size of the block 703 is consistent with the inner wall size of the slot 701. Through the setting of the slot 701 and the block 703, the cover 702 and the box body 1 are accurately connected and tightly installed. The precise matching of the sizes of the two allows the block 703 to be easily and tightly embedded in the slot 701. During installation, the operator can quickly position the cover 702 at the bottom of the box body 1, greatly improving the installation efficiency. During the operation of the device, this tight connection can effectively prevent the cover 702 from loosening or displacement due to external forces such as vibration and shaking, ensuring that the mud discharge device is always in a stable working state. At the same time, the tight combination can also prevent external impurities from entering the mud discharge port, prevent interference with the filter cake discharge, and ensure the smoothness and efficiency of the mud discharge.

[0036] When the mud discharge port needs to be closed, the fixing block 710 can be accurately inserted into the fixing hole 711 under the elastic force of the spring 709, and the tightly fitting size makes the two connected firmly, preventing the cover plate 702 from being accidentally opened when the mud discharge device is not turned on, ensuring the sealing of the inside of the box body 1 during the dehydration process and avoiding mud leakage. When the mud discharge port needs to be opened, the operator operates the handle 704 to retract the telescopic rod 708, driving the fixing block 710 to disengage from the fixing hole 711. The operation is simple and the mud discharge timing can be accurately controlled, thereby ensuring the orderly progress of the entire mud discharge process.

[0037] Working principle: First, the dredger continuously delivers the collected channel dredging mud to the feed stirring device 5 through the matching delivery pipeline. The mud falls directly to the bottom of the stirring drum 504 along the feed pipeline 501. At the same time, the dosing pipeline 502 accurately delivers the flocculation agent according to the mud parameters fed back by the sensor 503. The first motor 505 is started, and the rotating shaft 506 drives the stirring rod 507 to rotate rapidly. The spiral blade 508 stirs and pushes the mud and the agent to circulate up and down to make them fully mixed. As the stirring continues, the solid particles in the mud gradually agglomerate, creating favorable conditions for subsequent dehydration. When the solid particles in the stirring drum 504 After the materials are mixed evenly and reach a certain amount, the discharge port 509 is opened, and the mixed materials flow into the dehydration device 6. At this time, the second motor 601 is started, and the first screw 602 and the second screw 604 rotate synchronously, driving the movable filter plate 607 close to the fixed filter plate 608, and the filter cloth 609 is clamped to form a sealed filter chamber. After the mixed materials enter the chamber, under the action of pressure, the water penetrates the filter cloth 609 and flows into the filtrate collection box 611 through the filtrate tank 610, and the 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 is reversed, and the movable filter plate 60 7 moves backward, opens the filter chamber, the operator comes to the mud discharge device 7, holds the handle 704 and pulls it downward, the block 703 slides down along the slot 701, the fixing block 710 is separated from the fixing hole 711, the cover plate 702 is opened, and the filter cake is discharged from the box body 1 under the action of gravity. After the mud discharge is completed, the operator pushes up the handle 704, the cover plate 702 is reset, and the fixing block 710 is re-engaged in the fixing hole 711 under the action of the spring 709, completing the reset of the mud discharge device 7, and the filtrate collected in the filtrate collection box 611 is transported to a special purification treatment equipment, and after a series of treatment processes such as sedimentation, filtration, and disinfection, it meets the discharge standard. Then it is discharged into natural water bodies, or recycled for site dust reduction, equipment cleaning, etc. In the whole work process, the support legs 3 and the foot pads 4 always provide stable support for the device to ensure the stable operation of each component. At the same time, the operator will monitor the equipment operation status in real time, check the key parameters such as feed amount, dosage, dehydration pressure, filtrate water quality, etc., and adjust the equipment operation parameters in time according to the actual situation to ensure that the dehydration of waterway dredging mud is carried out efficiently, stably and environmentally friendly. The models of the first motor 505 and the second motor 601 are both Y315S-2, thus completing the use process of a waterway dredging mud dehydration device.

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

Claims

1. A waterway dredging mud dewatering device, comprising a housing (1), characterized in that: Support plates (2) are fixedly connected to both sides of the box (1), support legs (3) are installed at the bottom of the support plates (2), foot pads (4) are installed at the bottom of the support legs (3), a feeding stirring device (5) is arranged on the surface of the box (1), a dehydration device (6) is arranged inside the box (1), and a mud discharge device (7) is arranged at the bottom of the box (1); The dehydration device (6) comprises a second motor (601), a first screw (602), a limiting column (603), a second screw (604), a limiting column (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 column (603), and the limiting column (603) One end of the housing (1) is fixedly connected to a second screw rod (604), a limiting rod (605) is installed on the inner side of the housing (1), the first screw rod (602), the second screw rod (604) and the limiting rod (605) are all slidably connected to the inside of a slider (606), a movable filter plate (607) is fixedly connected to the surface of the slider (606), a fixed filter plate (608) is installed inside the housing (1), a filter cloth (609) is also installed inside the housing (1), filtrate grooves (610) are provided 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).

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

3. A waterway dredging mud dewatering device according to claim 1, characterized in that: The feeding and stirring device (5) comprises a feeding pipeline (501), a dosing pipeline (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 pipeline (501) is installed on the top of the box body (1), and the dosing pipeline (502) is also installed on the top of the box body (1). The sensor is installed on one side of the dosing pipeline (502). A stirring drum (504) is installed in the middle of the box body (1), a first motor (505) is installed at the top of the box body (1), an output end of the first motor (505) is fixedly connected to a rotating shaft (506), a stirring rod (507) is fixedly connected to the bottom of the rotating shaft (506), a spiral sheet (508) is threadedly connected to the surface of the stirring rod (507), and discharge ports (509) are opened on both sides of the bottom of the stirring drum (504).

4. A waterway dredging mud dewatering device according to claim 3, characterized in that: The bottoms of the feed pipe (501) and the dosing pipe (502) both penetrate the mixing drum (504), and the rotating shaft (506) forms a rotating structure through the first motor (505) and the stirring rod (507).

5. A waterway dredging mud dewatering device according to claim 1, characterized in that: The first screw rod (602) cooperates with the second screw rod (604) through the second motor (601) via the limiting column (603) to form a rotating structure, and the spirals of the first screw rod (602) and the second screw rod (604) are symmetrical to each other.

6. A waterway dredging mud dewatering device according to claim 1, characterized in that: Four identical groups of the limiting rods (605) are arranged inside the box body (1), and cooperate with the first screw rod (602) and the second screw rod (604) to form a rotation limiting structure.

7. A waterway dredging mud dewatering device according to claim 1, characterized in that: Two identical groups of filtrate collecting boxes (611) are arranged at the bottom of the box body (1), and the positions of the two groups of filtrate collecting boxes (611) correspond to the positions of the two groups of filtrate tanks (610).

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

9. A waterway dredging mud dewatering device according to claim 8, characterized in that: The position of the clamping block (703) corresponds to the position of the clamping slot (701), and the outer wall size of the clamping block (703) matches the inner wall size of the clamping slot (701).

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

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