Environment-friendly dredging and dewatering integrated equipment for river sediment

Abstract

The invention relates to the technical field of sludge treatment equipment, and discloses river sediment environment-friendly desilting and dewatering integrated equipment which comprises an extraction mechanism used for extracting sludge at the bottom of a river; the treatment box is used for providing a sludge treatment space; the dewatering part is used for dewatering the sludge; and the driving part is used for providing power for the extraction mechanism, the extraction mechanism conveys the sludge in the river channel into the treatment box, and the sludge is efficiently dehydrated through the dehydration part. According to the environment-friendly river sediment desilting and dewatering integrated equipment, spiral output of sludge can be achieved through combination of the dewatering part and the extraction mechanism, effective separation of the sludge is achieved through a permeable membrane of a whole spiral structure, the whole equipment is erected on the ship body, and therefore the ship body is directly utilized to move on a river channel, and the ship body is not prone to falling off. The sludge at the bottom of the river channel can be extracted, and meanwhile, the sludge and the water solution are effectively separated, so that the flowing smoothness of the river channel is ensured.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment equipment technology, specifically to an integrated environmentally friendly dredging and dewatering equipment for riverbed sediment. Background Technology

[0002] In recent years, environmentally friendly ecological dredging technology has gradually developed. It can not only effectively remove pollutants from riverbed sediment, but also create favorable conditions for the restoration of aquatic ecosystems. Compared with general dredging projects, environmentally friendly ecological dredging focuses on pollutants in bottom sediment and floating silt, while minimizing damage to the restoration conditions of aquatic ecosystems.

[0003] Because current methods for treating river silt are difficult to simplify, some rivers even require the riverbed to be drained before the silt is excavated and extracted to achieve the dredging process. In particular, the cleaning process for riverbed sediment is extremely complex. After the silt is extracted, it also needs to be dewatered. Undewatered silt contains a large amount of organic matter and heavy metals, which will undoubtedly cause pollution to the surrounding environment. Therefore, an integrated environmentally friendly dredging and dewatering equipment for riverbed sediment is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an integrated environmentally friendly dredging and dewatering equipment for riverbed sediment, which solves the problems of complex and costly sludge treatment in existing technologies.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an integrated environmentally friendly dredging and dewatering device for riverbed sediment, comprising an extraction mechanism for extracting silt from the bottom of the river; a treatment tank for providing space for silt treatment; a dewatering component for dewatering the silt; and a driving component for providing power to the extraction mechanism. The extraction mechanism transports the silt from the river to the interior of the treatment tank, where the dewatering component efficiently dewaters the silt.

[0006] The dehydration unit includes a spiral-structured permeation membrane installed inside the treatment chamber. A pressure plate abuts against the right side of the permeation membrane, and a pressure spring is connected to the right side of the pressure plate. The right end of the pressure spring is connected to the treatment chamber.

[0007] Preferably, the extraction mechanism includes a drag tube, a rotating shaft is rotatably connected inside the drag tube, the right end of the rotating shaft is connected to a drive component via a chain, a spiral blade is fixedly connected inside the rotating shaft, and a connecting pipe is connected to the left end of the drag tube, the connecting pipe being connected to the processing box.

[0008] Preferably, the surface of the spiral blade is provided with multiple permeation holes, the lower surface of the tow pipe is provided with an opening, the tow pipe is located on the riverbed of the river channel, and the treatment box is installed on the hull by mounting components.

[0009] Preferably, it includes a discharge mechanism for filtering solid particles in the sludge and discharging them outside; the discharge mechanism includes a power shaft, which is rotatably connected to the treatment box, and a gear is provided on the outside of the treatment box. The power shaft is connected to a drive component through the gear. A sleeve is connected to the side of the treatment box, and an inner mesh is provided inside the sleeve. The left end of the inner mesh is connected to a connecting pipe.

[0010] Preferably, the cavity between the inner mesh and the sleeve forms an outer cavity, which is connected to the processing box. A dividing blade is connected to the power shaft, and the dividing blade is located on the left side of the permeation membrane.

[0011] Preferably, a reciprocating lead screw is connected to the left end of the power shaft, a push net is slidably connected to the surface of the reciprocating lead screw, a sliding pin is connected inside the push net, and the sliding pin is slidably connected in the spiral groove of the reciprocating lead screw.

[0012] Preferably, the outer surface of the push net is slidably connected to the outer cavity, and the inner net has an elongated groove, on which the push net is slidably connected.

[0013] Preferably, a partition is fixedly connected to the pusher, a circular sleeve is provided between the sleeve and the connecting pipe, a discharge port is provided below the circular sleeve, the partition is slidably connected inside the circular sleeve, and a discharge port is provided on the partition.

[0014] Preferably, the permeation membrane has a fluid channel inside, a drain pipe is connected to the bottom of the permeation membrane, the drain pipe is installed on the treatment tank and the end face of the drain pipe is located outside the treatment tank, and a sludge discharge pipe is connected to the bottom of the treatment tank.

[0015] Preferably, a plurality of dividing plates are fixedly connected to the power shaft, and the pressure plate is provided with a sliding groove that cooperates with the dividing plates, and the dividing plates slide in the sliding groove.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides an integrated environmentally friendly dredging and dewatering equipment for riverbed sediment, which has the following beneficial effects: 1. This integrated environmental dredging and dewatering equipment for riverbed sediment, through the combination of dewatering components and extraction mechanisms, enables the spiral output of silt. The silt is transported through pipelines to the interior of the treatment tank, where a permeable membrane is used to separate the water in the silt. The overall high efficiency of membrane separation is utilized to dewater the silt at the bottom of the river. Furthermore, the spiral structure of the permeable membrane ensures that once the aqueous solution enters the internal flow channel, it automatically flows out from the drain pipe and returns to the riverbed, effectively separating the silt. The entire equipment is mounted on a boat, allowing the boat to move directly on the riverbed to extract the silt from the bottom of the river and effectively separate the silt from the aqueous solution, thus ensuring smooth river flow.

[0017] 2. This integrated environmentally friendly dredging and dewatering equipment for riverbed sediment can effectively separate particles from the extracted silt through its discharge mechanism. It separates stones and other particles trapped in the silt, thus preventing them from entering the dewatering unit and reducing damage to the permeable membrane. At the same time, it automatically throws stones and other debris back into the river, ensuring the river's ecology. The overall equipment has a low investment cost, is easy to operate, and is highly suitable for smaller river basins. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an integrated environmental protection dredging and dewatering equipment for riverbed sediment proposed in this invention; Figure 2 This is a schematic diagram of the overall back cross-sectional structure of an integrated environmental protection dredging and dewatering equipment for riverbed sediment proposed in this invention; Figure 3 This is a schematic diagram of the extraction mechanism of an integrated environmentally friendly dredging and dewatering device for riverbed sediment proposed in this invention; Figure 4 This is a schematic diagram of the spiral blade structure of an integrated environmental dredging and dewatering device for riverbed sediment proposed in this invention. Figure 5 This is a schematic diagram of the dewatering component structure of an integrated environmental dredging and dewatering equipment for riverbed sediment proposed in this invention. Figure 6 This is a schematic diagram of the permeable membrane structure of an integrated environmental dredging and dewatering device for riverbed sediment proposed in this invention; Figure 7 This is a schematic diagram of the partition plate connection structure of an integrated environmental dredging and dewatering equipment for riverbed sediment proposed in this invention. Figure 8 This is a schematic diagram of the discharge mechanism of an integrated environmental dredging and dewatering equipment for riverbed sediment proposed in this invention; Figure 9This is a schematic diagram of the connection structure between the push net and the circular sleeve of an integrated environmental protection dredging and dewatering device for riverbed sediment proposed in this invention. Figure 10 This is a schematic diagram of the push net structure of an integrated environmental dredging and dewatering equipment for riverbed sediment proposed in this invention.

[0019] In the diagram: 1. Extraction mechanism; 101. Dragging pipe; 102. Opening; 103. Rotating shaft; 104. Spiral blade; 105. Connecting pipe; 106. Permeation hole; 2. Treatment box; 3. Driving component; 4. Dewatering component; 401. Permeation membrane; 402. Pressure plate; 403. Pressure spring; 404. Power shaft; 405. Drainage pipe; 406. Dividing plate; 5. Discharge mechanism; 501. Sleeve; 502. Pushing screen; 503. Reciprocating screw; 504. Outer cavity; 505. Inner screen; 506. Partition plate; 507. Discharge port; 508. Dividing blade; 509. Circular sleeve; 510. Discharge port; 511. Sliding pin; 6. Sludge discharge pipe. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-10 An integrated environmentally friendly dredging and dewatering device for riverbed sediment includes an extraction mechanism 1 for extracting silt from the bottom of the river; a treatment tank 2 for providing space for silt treatment; a dewatering component 4 for dewatering the silt; and a drive component 3 for providing power to the extraction mechanism 1. The extraction mechanism 1 transports the silt from the river to the interior of the treatment tank 2, where the dewatering component 4 efficiently dewaters the silt.

[0022] In this embodiment, the dewatering component 4 includes a spiral-structured permeable membrane 401, which is installed inside the treatment tank 2. A pressure plate 402 abuts against the right side of the permeable membrane 401, and a pressure spring 403 is connected to the right side of the pressure plate 402. The right end of the pressure spring 403 is connected to the treatment tank 2. A pressure plate 402 that can move axially is tightly abutted against the right side of the permeable membrane 401. This pressure plate 402 is not fixed; its right side is connected to the pressure spring 403, and the other end of the pressure spring 403 is fixed to the tank structure of the treatment tank 2. The introduction of the pressure spring 403 provides an adjustable back pressure structure for the entire dewatering process. When the extraction mechanism 1 continuously pumps riverbed sediment into the treatment tank 2 and pushes it towards the dewatering component 4, the sediment first enters the channel formed by the spiral permeable membrane 401. During the screw conveyor process, the sludge is compressed, and its internal water, under the action of pressure and gravity, permeates through the micropores of the permeate membrane 401 into the fluid channels inside the membrane, and is then discharged through the drain pipe 405 at the bottom, achieving sludge-water separation. As the sludge is continuously input and moved forward, it exerts continuous pressure on the pressure plate 402 on the right side. This pressure overcomes the preload of the pressure spring 403, pushing the pressure plate 402 to the right. The reaction force generated by the compression of the pressure spring 403, in turn, acts on the sludge, forming a dynamic and buffered secondary compression environment. This makes the dewatering process more thorough and gentle, avoiding hard clogging, and can adapt to the treatment needs of sludge with different moisture contents, ensuring the stability and efficiency of the dewatering effect. Finally, the dewatered sludge is discharged from the side of the pressure plate 402 or from the outlet formed after its opening under the action of compression, entering the subsequent sludge discharge pipe 6.

[0023] Furthermore, the extraction mechanism 1 includes a tow pipe 101, with a rotating shaft 103 rotatably connected inside the tow pipe 101. The right end of the rotating shaft 103 is connected to the drive unit 3 via a chain. A spiral blade 104 is fixedly connected inside the rotating shaft 103 within the tow pipe 101. A connecting pipe 105 connects to the left end of the tow pipe 101, and the connecting pipe 105 is connected to the processing tank 2. Continuous spiral blades 104 are fixedly installed on the section of the rotating shaft 103 located inside the tow pipe 101, forming the conveying execution structure. When it rotates at high speed under external force, it can generate a strong axial propulsion force on the silt entering the pipe. To achieve smooth silt collection and subsequent processing, a connecting pipe 105 is connected to the left end of the tow pipe 101, i.e., the conveying end. This connecting pipe 105 serves as a conveying channel, connecting the tow pipe 101 to the subsequent processing tank 2, forming a complete closed flow path from silt collection to processing. The tow pipe 101 is placed on the riverbed. After the drive unit 3 is started, power is transmitted to the rotating shaft 103 via a chain, causing it and the helical blades 104 to rotate continuously inside the tow pipe 101. The rotating helical blades 104 act like a highly efficient "helical conveyor," capturing and agitating the riverbed sediment entering through the opening 102 at the bottom of the tow pipe 101, and applying continuous axial pressure to stably transport it to the left along the pipe. The sludge is forcibly pushed into the processing tank 2 via the connecting pipe 105, providing a continuous material supply for the subsequent dewatering process. In addition, the surface of the spiral blade 104 is provided with multiple permeation holes 106, and the lower surface of the tow pipe 101 is provided with an opening 102. The tow pipe 101 is located on the riverbed of the river channel, and the treatment box 2 is mounted on the hull by mounting components. The surface of the spiral blade 104 is also provided with multiple permeation holes 106. These holes can discharge some free water during the transportation process, achieving preliminary mud-water separation, which reduces the processing load of the subsequent dewatering unit 4.

[0024] In addition, the discharge mechanism 5 is used to filter solid particles in the sludge and discharge them. The discharge mechanism 5 includes a power shaft 404, which is rotatably connected to the treatment box 2. Gears are installed on the outside of the treatment box 2. The power shaft 404 is connected to the drive component 3 through the gears. A sleeve 501 is connected to the side of the treatment box 2. An inner mesh 505 is installed inside the sleeve 501. The left end of the inner mesh 505 is connected to the connecting pipe 105. A sleeve 501 is fixedly connected to the side of the treatment box 2, forming the outer shell of the discharge mechanism 5. A cylindrical inner mesh 505 is installed inside the sleeve 501. This inner mesh 505 is made of a high-strength filter screen with a high porosity. Its left inlet is directly connected to the connecting pipe 105 of the extraction mechanism 1 through a pipe. Thus, the mud-water mixture drawn from the river will first enter the internal cavity of the inner mesh 505 before entering the main body of the treatment box 2. The mud-water mixture carrying solid impurities such as pebbles and shells is pushed by the extraction mechanism 1 and first enters the inner mesh 505 of the discharge mechanism 5 through the connecting pipe 105. Under the conveying pressure, smaller sludge particles and most water molecules pass through the filter holes of the inner mesh 505 and enter the outer cavity 504, then flow into the treatment tank 2 to await further dewatering. Larger solid particles are intercepted inside the inner mesh 505, achieving primary separation of impurities. This effectively prevents these hard particles from entering the subsequent dewatering unit 4, avoiding scouring, wear, or clogging of the precision spiral permeation membrane 401.

[0025] It is worth noting that the cavity between the inner mesh 505 and the sleeve 501 forms the outer cavity 504, which is connected to the treatment tank 2. A dividing blade 508 is connected to the power shaft 404, located to the left of the permeate membrane 401. The mud-water mixture, initially separated by the inner mesh 505 and free of large particles, is guided into the treatment tank 2 through the connecting channel after entering the outer cavity 504. This allows the outer cavity 504 to act as an intermediate buffer and conveyor for clean mud, ensuring a continuous supply of materials. When the power shaft 404 rotates, it drives the dividing blade 508 to rotate synchronously. The dividing blade 508 acts as a dynamic agitator and distributor, capable of cutting, breaking up, and radially dispersing the mud about to enter the narrow flow channel of the spiral permeate membrane 401. This effectively breaks the inertial flow of the material, preventing the mud from accumulating only at the bottom of the permeate membrane channel due to gravity, thus ensuring that the mud can uniformly fill and pass through the entire annular space of the spiral permeate membrane 401. This not only greatly improves the effective utilization area and dewatering efficiency of the permeable membrane, but also prevents the risk of blockage caused by excessive local sludge thickness or deposition and compaction.

[0026] It is worth noting that a reciprocating screw 503 is connected to the left end of the power shaft 404. A push net 502 is slidably connected to the surface of the reciprocating screw 503, and a sliding pin 511 is connected inside the push net 502. The sliding pin 511 is slidably connected in the spiral groove of the reciprocating screw 503. The outer surface of the push net 502 is slidably connected in the outer cavity 504, and a long groove is opened on the inner net 505, on which the push net 502 is slidably connected. When the power is transmitted from the drive member 3 to the reciprocating screw 503 via the power shaft 404, the screw begins to rotate at a constant speed. Since the sliding pin 511 is circumferentially constrained and can only move axially, it is forced to move along the trajectory of the groove under the drive of the rotating spiral groove. Because the lead of the spiral groove reverses at a specific position, the sliding pin 511, together with the entire push net 502, is driven to make continuous and periodic reciprocating motion in the axial direction. The outer edge of the pusher net 502 maintains a precise fit with the inner wall of the outer cavity 504 and can slide smoothly axially within it. Meanwhile, an axially spaced long groove is formed on the cylindrical wall of the inner net 505. The body of the pusher net 502 or its extension passes through this long groove and can slide within it. This design allows the pusher net 502 to simultaneously span both the outer cavity 504 and the internal space of the inner net 505.

[0027] It is worth mentioning that a partition plate 506 is fixedly connected to the pusher 502, and a circular sleeve 509 is provided between the sleeve 501 and the connecting pipe 105. A discharge port 510 is opened below the circular sleeve 509. The partition plate 506 is slidably connected inside the circular sleeve 509, and a discharge port 507 is opened on the partition plate 506. The partition plate 506 is precisely slidably fitted in the internal cavity of the circular sleeve 509, and can move smoothly axially inside it. This makes the partition plate 506 act like a gate sliding in a fixed valve seat, and its position directly determines the opening and closing of the flow channel. A specific channel discharge port 507 is opened on the plate body of the partition plate 506. This discharge port 507 is the only controlled channel for impurities to flow from the inside of the system to the discharge port 510. When the pusher 502 drives the partition plate 506 to a certain position, the solid part of the partition plate 506 exactly blocks the discharge port 510 of the circular sleeve 509. At this point, the discharge port 507 and discharge port 510 are completely offset in space and do not communicate with each other. The internal channel of the sleeve 509 is effectively sealed by the solid part of the partition 506. Under these conditions, the slurry transported from the connecting pipe 105 cannot leak directly from here, the system maintains its working pressure, and the slurry is forced to be filtered and separated mainly through the inner screen 505, ensuring the normal pressure and flow rate of the extraction and dewatering process. As the pusher screen 502 continues to reciprocate, when it moves the partition 506 to another specific position, the discharge port 507 on the partition 506 will be precisely aligned with the discharge port 510 below the sleeve 509. At this moment, a continuous discharge channel is instantly opened. In this state, the large particles of impurities that were previously gathered and pushed here by the pusher screen 502 are quickly discharged from the system at high speed through the aligned discharge port 507 and discharge port 510 under the pushing pressure of the subsequent slurry.

[0028] It is worth noting that through the continuous reciprocating motion of the pusher 502, the baffle 506 periodically switches between the "closed" and "open" states, thereby realizing the intermittent and pulsed automatic discharge of impurities. This effectively removes harmful particles and maintains the stability of the system's working pressure to the maximum extent, ensuring the continuous and efficient operation of the core dewatering process.

[0029] Furthermore, the permeate membrane 401 has internal fluid channels, and a drain pipe 405 is connected to the bottom of the permeate membrane 401. The drain pipe 405 is installed on the treatment tank 2, with its end face located outside the treatment tank 2. A sludge discharge pipe 6 is connected to the bottom of the treatment tank 2. Multiple dividing plates 406 are fixedly connected to the power shaft 404, and a sliding groove is provided on the pressure plate 402 to cooperate with the dividing plates 406, allowing the dividing plates 406 to slide within the groove. When the sludge is squeezed between the spiral channels, the separated free water and some small molecules, driven by pressure, penetrate the micropore wall of the permeate membrane and enter the internal fluid channels, where they collect. At the bottom of this structure, a drain pipe 405 is connected, which is fixedly installed on the tank body of the treatment tank 2, with its outlet leading to the outside of the treatment tank 2. Thus, the successfully separated clarified filtrate can be discharged from the equipment in an orderly manner through this dedicated pipe, and can be selectively guided back to the river or collected, realizing the recycling and reduction of water resources. After thorough dewatering via the permeation membrane 401 and final extrusion molding by the pressure plate 402, the solid or semi-solid sludge cake with significantly reduced moisture content will be discharged from the end of the dewatering unit 4. For this purpose, a sludge discharge pipe 6 is connected to the bottom of the treatment tank 2. This sludge discharge pipe 6 serves as the final outlet for the dewatered material, guiding the treated sludge to collection facilities or transport vehicles on the riverbank, completing the entire process from riverbed sediment to controllable waste. To prevent the dewatered sludge cake from adhering and accumulating at the outlet, causing blockage, an active crushing and conveying mechanism is designed. Multiple radially arranged dividing plates 406 are fixedly connected to the power shaft 404 running through the treatment tank 2 at the end of the dewatering section. These dividing plates 406 act like a set of rotating blades, their rotation trajectory intersecting the discharge path of the sludge cake. This action completely disrupts the continuity of the mud cake, greatly reducing the risk of bridging, sticking to the wall, or clogging at the inlet of the mud discharge pipe 6. This ensures that the dewatered sludge can be discharged continuously, stably, and smoothly from the mud discharge pipe 6, guaranteeing the reliability of the equipment during long-term operation.

[0030] The working principle is as follows: First, the entire equipment is installed on a boat. The boat then moves upstream, with the tow pipe 101 submerged in the riverbed. The drive motor is controlled, using a sector gear transmission to rotate the power shaft 404, which in turn drives the sprocket. The chain drive then rotates the rotating shaft 103, which in turn drives the spiral blades 104. As the boat moves, silt enters the opening of the tow pipe 101. The rotating spiral blades 104 then laterally transport the silt into the connecting pipe 105. This spiral conveying method is simpler and provides a certain degree of continuous compression and pushing effect. Compared to traditional pump extraction, this method reduces the equipment's power consumption. Traditional pump extraction has a limited extraction range, is prone to pipe blockage, requires high-power pumps, and is more susceptible to damage over time. Therefore, this spiral compression conveying method improves the stability of silt transport. After the sludge enters the treatment tank 2, it will be laterally squeezed and transported through the spiral gap of the permeate membrane 401. The water in the sludge will enter the internal flow channel of the permeate membrane 401, and then enter the interior of the drain pipe 405, and be discharged outwards, flowing back into the river. At this time, the sludge inside the treatment tank 2 will be continuously transported to the right by the spiral extrusion force of the extraction mechanism 1, and then it will exert a squeezing effect on the pressure plate 402. The squeezing force of the sludge on the pressure plate 402 will then be transmitted to the pressure spring 403, and the elastic force of the pressure spring 403 will then perform a similar "squeezing dewatering" on the sludge. After that, it will push the pressure plate 402 to move laterally, exposing the permeate membrane. At the right-side discharge port of 401, the sludge will enter the sludge discharge pipe 6 from the discharge port. The discharge port of the sludge discharge pipe 6 can face the riverbank, or it can be collected by a collection mechanism, depending on the actual treatment situation. When the power shaft 404 rotates, it will simultaneously drive the rotation of the dividing plate 406 and the dividing blades 508. The rotation of the dividing blades 508 is mainly to divide the sludge input port, avoiding the gravity effect during sludge transportation, and ensuring that the sludge flows only from below the permeate membrane 401. The dividing blades 508 will evenly control the distribution of sludge to the entire channel area of ​​the permeate membrane 401. The rotation of the dividing plate 406 is to cut and break up the extruded cake-shaped sludge, preventing the equipment from jamming during sludge output. Therefore, the dividing plate 406 breaks up the sludge, thereby improving the operational stability of the equipment.Meanwhile, considering that the extraction mechanism 1 might convey some stones from the pipe during screw conveying, which could potentially cause hard contact damage to the permeable membrane, a discharge mechanism 5 is provided. When the power shaft 404 rotates, it will drive the reciprocating screw 503 to rotate. The rotation of the reciprocating screw 503 will drive the pusher screen 502 to move left and right in a cyclical manner. The sludge flows from the connecting pipe 105 into the sleeve 509, and then into the inner screen 505. The inner screen 505 is equipped with filter holes, which will squeeze and filter the sludge into the outer cavity 504. Then, it will undergo a second filtration through the fine holes on the pusher screen 502, and finally enter the processing box 2 through the channel of the outer cavity 504. Therefore, some impurities... The impurities will accumulate inside the outer cavity 504 and the inner mesh 505. At this time, the cyclic action of the pusher 502 will push these impurity particles to the inner shaft of the sleeve 509. At this time, the discharge port 507 on the partition 506 coincides with the discharge port 510, forming an external discharge channel. The extrusion force generated by the extraction mechanism 1 will have an additional pressure relief port, thereby squeezing the impurity particles pushed out by the pusher 502 from the discharge port 510. After the pusher 502 resets and moves laterally, the discharge port 507 will be misaligned with the discharge port 510. At this time, the sleeve 509 will form a similar closed structure. The spiral extrusion force of the extraction mechanism 1 will then transport the sludge laterally again until it passes laterally through the position of the permeation membrane 401.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An integrated environmentally friendly dredging and dewatering equipment for riverbed sediment, characterized in that, include: Extraction mechanism (1) is used to extract silt from the bottom of the river channel; Treatment box (2) is used to provide space for sludge treatment; Dewatering component (4) is used for dewatering sludge; The driving component (3) provides power to the extraction mechanism (1), which transports the silt from the river to the interior of the treatment tank (2) where the dewatering component (4) efficiently dewaters the silt. The dehydration component (4) includes a spiral permeation membrane (401) installed inside the treatment tank (2). A pressure plate (402) abuts against the right side of the permeation membrane (401). A pressure spring (403) is connected to the right side of the pressure plate (402). The right end of the pressure spring (403) is connected to the treatment tank (2).

2. The integrated environmental dredging and dewatering equipment for riverbed sediment as described in claim 1, characterized in that: The extraction mechanism (1) includes a drag tube (101), and a rotating shaft (103) is rotatably connected inside the drag tube (101). The right end of the rotating shaft (103) is connected to the drive component (3) via a chain. A spiral blade (104) is fixedly connected inside the drag tube (101) to the rotating shaft (103). A connecting pipe (105) is connected to the left end of the drag tube (101), and the connecting pipe (105) is connected to the processing box (2).

3. The integrated environmental dredging and dewatering equipment for riverbed sediment as described in claim 2, characterized in that: The surface of the spiral blade (104) is provided with a plurality of permeation holes (106), the lower surface of the tow pipe (1) is provided with an opening (102), the tow pipe (101) is located on the riverbed of the river channel, and the treatment box (2) is installed on the hull by means of an installation component.

4. The integrated environmental dredging and dewatering equipment for riverbed sediment as described in claim 2, characterized in that: It also includes a discharge mechanism (5) for filtering solid particles in the sludge and discharging them out; The discharge mechanism (5) includes a power shaft (404), which is rotatably connected to the processing box (2). The power shaft (404) is equipped with gears on the outside of the processing box (2). The power shaft (404) is connected to the drive unit (3) through the gears. A sleeve (501) is connected to the side of the processing box (2). An inner net (505) is provided inside the sleeve (501). The left end of the inner net (505) is connected to the connecting pipe (105).

5. The integrated environmental dredging and dewatering equipment for riverbed sediment as described in claim 4, characterized in that: The cavity between the inner mesh (505) and the sleeve (501) forms an outer cavity (504), which is connected to the processing box (2). A dividing blade (508) is connected to the power shaft (404), which is located on the left side of the permeation membrane (401).

6. The integrated environmental dredging and dewatering equipment for riverbed sediment as described in claim 5, characterized in that: The left end of the power shaft (404) is connected to a reciprocating screw (503), and a push net (502) is slidably connected to the surface of the reciprocating screw (503). A sliding pin (511) is connected inside the push net (502), and the sliding pin (511) is slidably connected in the spiral groove of the reciprocating screw (503).

7. The integrated environmental dredging and dewatering equipment for riverbed sediment as described in claim 6, characterized in that: The outer surface of the push net (502) is slidably connected to the outer cavity (504), and the inner net (505) has a long groove, on which the push net (502) is slidably connected.

8. The integrated environmental dredging and dewatering equipment for riverbed sediment as described in claim 7, characterized in that: A partition plate (506) is fixedly connected to the push net (502). A circular sleeve (509) is provided between the sleeve (501) and the connecting pipe (105). A discharge port (510) is provided below the circular sleeve (509). The partition plate (506) is slidably connected inside the circular sleeve (509). A discharge port (507) is provided on the partition plate (506).

9. The integrated environmental dredging and dewatering equipment for riverbed sediment as described in claim 1, characterized in that: The permeation membrane (401) has a fluid channel inside, and a drain pipe (405) is connected to the bottom of the permeation membrane (401). The drain pipe (405) is installed on the treatment tank (2), and the end face of the drain pipe (405) is located outside the treatment tank (2). A sludge discharge pipe (6) is connected to the bottom of the treatment tank (2).

10. The integrated environmental dredging and dewatering equipment for riverbed sediment as described in claim 4, characterized in that: Multiple partition plates (406) are fixedly connected to the power shaft (404). The pressure plate (402) has a sliding groove that cooperates with the partition plates (406). The partition plates (406) slide in the sliding groove.

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