Underwater antifouling and noise reduction device

Abstract

This invention discloses an underwater anti-fouling and noise reduction device, comprising a functional main body and a fixation component. The functional main body includes a curtain, a sediment treatment component, and a bubble generating device. The curtain includes a vertical baffle layer and perforated layers and noise reduction layers located on both sides thereof, with the perforated layers and baffle layers enclosing a first chamber. The sediment treatment component includes a feeding mechanism, a settling aid mechanism, and a silt removal mechanism. The feeding mechanism feeds flocculant into the first chamber, the settling aid mechanism has a first movable component with a pressure-balancing channel to apply downward thrust to sediment clumps, and the silt removal mechanism is located at the bottom of the first chamber to discharge sediment clumps. The bubble generating device is located at the top of the curtain to form a bubble curtain. The fixation component includes a propulsion mechanism for balancing the attitude of the functional main body and a counterweight and anchor located at the bottom of the functional main body. The device has a simple and reasonable structure, can achieve stable and precise structural coordination in an underwater environment, and has good anti-fouling and noise reduction effects.

Description

Technical Field

[0001] This invention relates to the field of water construction facilities technology, and in particular to an underwater anti-fouling and noise reduction device. Background Technology

[0002] During underwater construction or operations, such as dredging, piling, and blasting, large amounts of suspended sediment and construction noise are inevitably generated. Sediment dispersion can pollute surrounding waters and impact the ecological environment; high-intensity noise can interfere with the normal activities of marine life and even cause harm. Therefore, how to effectively control sediment dispersion and noise propagation in the construction area is a key technical issue that needs to be considered in the field of underwater engineering.

[0003] Currently, common countermeasures involve deploying anti-fouling curtains or sound barriers around the construction area. While some of these devices are fully functional, their complex structures and cumbersome installation procedures result in high costs, often leading to unnecessary resource investment in construction areas with relatively simple hydrological conditions. Other devices, though simple in structure and easy to deploy, generally suffer from limited functionality or poor design. In the variable underwater environment, the components struggle to achieve stable and precise coordination to achieve effective and comprehensive treatment.

[0004] Therefore, it is necessary to develop a pollution prevention and noise reduction device to solve the above-mentioned problems existing in the current technology. Summary of the Invention

[0005] The main technical problem to be solved by the present invention is to provide a simple and reasonable multifunctional underwater antifouling and noise reduction device that can achieve better hydrological environment treatment capabilities through a precise and reliable structural combination.

[0006] To address the aforementioned technical problems, this invention provides an underwater antifouling and noise reduction device, comprising a functional main body and a fixation component; the functional main body includes a curtain, a sediment treatment component, and a bubble generating device; wherein, the curtain includes a vertical baffle layer and a perforated layer and a noise reduction layer disposed on both sides of the baffle layer along the thickness direction; the perforated layer faces the ocean current and is disposed opposite to the baffle layer to enclose a first chamber;

[0007] The sediment treatment assembly includes a feeding mechanism, a sedimentation aid mechanism, and a silt removal mechanism. The feeding mechanism includes a storage chamber containing flocculant and a feeding channel connecting the storage chamber to the first chamber. The sedimentation aid mechanism includes a first driving member located in the first chamber and a first movable member that moves up and down under the drive of the first driving member. The first movable member has a vertically connected pressure channel to apply a downward thrust to the sediment clumps flocculated in the first chamber. The silt removal mechanism is located at the bottom of the first chamber and has a silt removal channel connecting the bottom of the first chamber to the external water environment. The silt removal mechanism includes a second driving member and a second movable member that moves along the silt removal channel under the drive of the second driving member.

[0008] The bubble generating device is positioned at the top of the curtain to form a bubble curtain within a height range from the top of the device to the sea level.

[0009] The stabilization assembly includes a propulsion mechanism, a counterweight, and an anchor body; the propulsion mechanism is fixed to the top of the functional body and has power to generate thrust on the water along the thickness direction of the curtain; the counterweight is located at the bottom of the functional body; the anchor body is connected to the functional body and anchored to the seabed.

[0010] In a preferred embodiment, the sludge removal mechanism encloses a sludge removal chamber; the chamber wall of the sludge removal chamber is provided with a sludge passage communicating with the first chamber and a sludge discharge port communicating with the external water environment; the sludge passage and the sludge discharge port are connected to form the sludge removal channel.

[0011] In a preferred embodiment, the second movable component includes a conveyor belt disposed in the silt removal chamber; one end of the conveyor belt is located below the silt inlet, and the other end extends out of the silt discharge outlet; the conveyor belt is provided with a plurality of vertical plates spaced apart along the longitudinal direction for pushing clumps of mud and sand falling onto the conveyor belt toward the silt discharge outlet.

[0012] In a preferred embodiment, the sludge removal mechanism further includes a first sealing element; the first sealing element includes a rotating shaft disposed at the upper edge and / or lower edge of the sludge discharge port and a plurality of rotating blades rotating about the rotating shaft; the width of the rotating blades is equal to the distance from the rotating shaft to the conveyor belt.

[0013] In a preferred embodiment, the sludge removal mechanism further includes a second sealing element; the sealing element includes a sliding plate disposed at the sludge passage; the sliding plate slides against the cavity wall of the sludge removal chamber to realize the opening and closing of the sludge passage.

[0014] In a preferred embodiment, the first driving member includes a first motor and a lead screw connected to the output end of the first motor, the lead screw being vertically disposed within the first chamber; the first movable member includes a sinking plate that cooperates with the lead screw in reversing transmission; the pressure balancing channel is disposed in the thickness direction of the sinking plate.

[0015] In a preferred embodiment, the first movable component further includes a sludge-removing plate sleeved around the outer periphery of the lead screw; the sludge-removing plate and the sinking aid plate are arranged opposite each other along the thickness direction, and the two are connected by a telescopic rod; the sludge-removing plate is provided with a plurality of sludge-removing needles aligned with the pressure-balancing channel on the side facing the sinking aid plate.

[0016] In a preferred embodiment, a sealed second chamber is enclosed between the barrier layer and the noise reduction layer; the silt treatment assembly further includes a first pump body and a second pump body; the first pump body is disposed in the second chamber and communicates with the silt removal chamber; the second pump body is disposed on the top of the functional body and communicates with the second chamber.

[0017] In a preferred embodiment, the storage chamber is disposed in the partition layer; the partition layer has an intermittently opening and closing feeding port on the side facing the first chamber to serve as the feeding channel.

[0018] In a preferred embodiment, the noise reduction layer includes a noise reduction plate having porous ceramic spheres.

[0019] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0020] The anti-fouling and noise reduction device provided by the present invention has the characteristics of good anti-fouling effect, stable working performance and reliable structural design, and can effectively meet the control requirements of mud and sand diffusion and noise propagation in complex underwater environments. Specifically: (1) The device integrates mud and sand sedimentation discharge, bubble curtain anti-fouling and sound absorption and noise reduction functions, forming multiple environmental treatment capabilities, which can effectively meet the problems of mud and sand diffusion and noise pollution generated by underwater construction. With the three-dimensional fixation components, the device can always maintain a stable and vertical working posture in complex ocean current environments, providing structural guarantee for the reliable performance of various functions. (2) The sinking mechanism is ingeniously designed. The sinking plate descends smoothly under the drive of the driving component, applying directional thrust to the flocculated mud and sand clumps to accelerate their sinking; the pressure-balancing channel opened on the sinking plate can balance the upper and lower water pressure, avoiding disturbance and breakage of mud and sand clumps due to increased water resistance. The cooperation between the dredging needle and the pressure-balancing channel realizes the active dredging of the channel, effectively preventing mud and sand blockage and ensuring the long-term stable operation of the sinking mechanism. (3) The sludge removal mechanism achieves continuous and stable pushing of settled silt masses by setting vertical plates on the conveyor belt; the first sealing element adopts a structure of alternating cooperation between rotating blades and vertical plates, which reliably cuts off the backflow path of external water flow during dynamic transportation, ensuring smooth sludge discharge and maintaining the sealed state of the sludge removal chamber. The pumping action of the first pump body on the sludge removal chamber creates negative pressure in the chamber, promoting further sedimentation of silt masses and making them less prone to secondary suspension after discharge. The above design together achieves rapid and stable sludge removal from the water body. Attached Figure Description

[0021] Figure 1 This is a front view of the device described in an embodiment of the present invention on one side of the punching layer;

[0022] Figure 2 This is a side sectional view of the device described in an embodiment of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the sinking mechanism described in an embodiment of the present invention;

[0024] Figure 4 This is a side sectional view of the sludge removal mechanism described in an embodiment of the present invention.

[0025] The diagram is labeled as follows: 1-Curtain, 11-Blocking layer, 12-Perforated layer, 13-Noise reduction layer, 14-First chamber, 15-Second chamber, 2-Sinking aid mechanism, 21-First motor, 22-Screw rod, 23-Sinking aid plate, 24-Water passage hole, 25-Sludge removal plate, 26-Sludge removal needle, 27-Telescopic rod, 3-Sludge removal mechanism, 31-Sludge removal chamber, 32-Sludge passage, 33-Sludge discharge port, 34-Conveyor belt, 35-Upright plate, 36-Rotating shaft, 37-Rotating blade, 38-Slide plate, 41-First pump body, 42-Second pump body, 5-Bubble generator, 61-Propulsion mechanism, 62-Counterweight, 63-Anchor body. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0029] like Figures 1 to 4 As shown, this invention provides an underwater anti-fouling and noise reduction device to solve the problems of sediment diffusion and noise pollution generated during underwater construction or operations. Overall, the device includes a functional main body and a stabilization component. The functional main body performs anti-fouling and noise reduction functions, while the stabilization component ensures that the functional main body maintains a stable and vertical working posture underwater.

[0030] Specifically, the main functional components include a curtain 1, a sediment treatment assembly, and a bubble generator 5. As the framework and main working interface of the device, the curtain 1 includes a vertical baffle layer 11 and perforated layers 12 and noise reduction layers 13 arranged along the thickness direction on both sides of the baffle layer 11. The perforated layer 12 faces the ocean current and is positioned opposite the baffle layer 11 to enclose a first chamber 14. As the name suggests, the perforated layer 12 has a series of through holes arranged to form a honeycomb-like perforated structure. This structure not only allows the ocean current to carry sediment into the first chamber 14 but also weakens the impact of the ocean current, acting as a wave damping agent, thereby stabilizing the water flow velocity within the first chamber 14 and creating favorable hydraulic conditions for subsequent sediment settling and flocculation. It is easy to understand that the perforated layer 12 faces the construction area.

[0031] The sediment treatment assembly is used to treat sediment entering the first chamber 14, and includes a feeding mechanism, a settling aid mechanism 2, and a silt removal mechanism 3. The feeding mechanism includes a storage chamber containing flocculant and a feeding channel connecting the storage chamber to the first chamber 14. Thus, the storage chamber releases flocculant into the first chamber 14 through the feeding channel, causing suspended sediment particles to agglomerate into larger sediment clumps, facilitating rapid sediment settling. Preferably, the storage chamber is located in the baffle layer 11, and the baffle layer 11 has an intermittently opening and closing feeding port on the side facing the first chamber 14 as the feeding channel. The ocean current entering from the perforated layer 12 and the sediment it carries are impacted and decelerated again by the baffle layer 11, and the flocculant is released on this decelerating surface, allowing it to act more fully on the sediment.

[0032] The settling mechanism 2 includes a first driving member disposed in the first chamber 14 and a first movable member that moves up and down under the drive of the first driving member. The first movable member applies a downward thrust to the flocculated sediment clumps in the first chamber 14, accelerating the rapid settling of the sediment clumps. During the descent of the first movable member, the water pressure increases, which not only increases water resistance but also easily disturbs and breaks the sediment clumps. To address this, the first movable member is provided with a vertically connected pressure-balancing channel, through which the pressure-pressed water can escape, effectively balancing the water pressure above and below the first movable member. In a preferred embodiment, the first driving member includes a first motor 21 disposed at the top of the first chamber 14 and a lead screw 22 connected to the output end of the first motor 21. The lead screw 22 is vertically disposed in the first chamber 14. The first movable member includes a settling plate 23 that engages with the lead screw 22 for reversing transmission. The pressure-balancing channel is disposed in the thickness direction of the settling plate 23, and in this embodiment, it specifically consists of several water passage holes 24 penetrating in the thickness direction of the settling plate 23. When the first motor 21 starts, the sinking plate 23 descends smoothly through the transmission cooperation with the lead screw 22, pushing the mud and sand clump to sink further. Then the first motor 21 reverses to drive the sinking plate 23 to reset, and the sinking mechanism 2 completes one cycle of work.

[0033] Furthermore, to prevent silt from clogging the pressure channel on the settling plate 23, the first movable component also includes a sludge-removing plate 25 sleeved around the outer periphery of the lead screw 22. The sludge-removing plate 25 and the settling plate 23 are arranged opposite each other along the thickness direction, and the two are connected by a telescopic rod 27 to achieve movement towards or away from each other. The sludge-removing plate 25 has several sludge-removing needles 26 aligned with the pressure channel on the side facing the settling plate 23. After the settling plate 23 completes one sinking push, the sludge-removing plate 25 can approach the settling plate 23 through the telescopic rod 27, so that the sludge-removing needles 26 are inserted into the pressure channel of the settling plate 23, pushing out any silt that may be clogging it, thus ensuring the long-term stable operation of the settling mechanism 2.

[0034] The sludge removal mechanism 3 is located at the bottom of the first chamber 14 and is used to discharge settled silt clumps from the interior of the functional body. The sludge removal mechanism 3 has a sludge removal channel connecting the bottom of the first chamber 14 to the external water environment. The sludge removal mechanism 3 includes a second driving member and a second movable member that moves along the sludge removal channel under the drive of the second driving member, so as to push the silt clumps out of the device along the sludge removal channel after receiving the settled silt clumps. Preferably, the sludge removal mechanism 3 encloses a sludge removal chamber 31, the chamber wall of which has a sludge passage 32 communicating with the first chamber 14 and a sludge discharge port 33 communicating with the external water environment. The sludge passage 32 and the sludge discharge port 33 are connected to form the sludge removal channel. This chamber structure provides sufficient and relatively enclosed space for the operation of the first movable member, which helps to achieve stable conveying. Preferably, the second driving member includes a second motor (not shown in the figure) located in the sludge removal chamber 31, and the second movable member includes a conveyor belt 34 located in the sludge removal chamber 31. One end of the conveyor belt 34 is located below the siltation inlet 32, and the other end extends out of the silt discharge outlet 33. After the silt clumps are received by the siltation inlet 32, they further settle onto the conveyor belt 34. The conveyor belt 34 is provided with several vertical plates 35 at intervals along its longitudinal direction to continuously and stably push the silt clumps falling on the conveyor belt 34 to the silt discharge outlet 33.

[0035] To promote sediment sedimentation and discharge, the sediment treatment assembly further includes a first pump body 41 and a second pump body 42 to discharge water from the silt removal chamber 31. A sealed second chamber 15 is enclosed between the baffle layer 11 and the noise reduction layer 13. The first pump body 41 is located in the second chamber 15 and connected to the silt removal chamber 31, used to pump water from the silt removal chamber 31 into the second chamber 15. This creates a negative pressure within the silt removal chamber 31, further settling the sediment clumps, making them less prone to re-suspension after discharge. The second pump body 42 is located at the top of the main body and connected to the second chamber 15, used to pump water from the second chamber 15 away from the main body, thereby maintaining the balance of the entire system's water circulation.

[0036] To prevent external water from flowing back into the sludge removal chamber 31 when the first pump body 41 is working, the sludge removal chamber 31 is sealed. Therefore, the sludge removal mechanism 3 also includes a first sealing element and a second sealing element. The first sealing element includes a rotating shaft 36 located at the upper and / or lower edge of the discharge port 33 and several rotating blades 37 rotating around the rotating shaft 36. The width of the rotating blades 37 is equal to the distance from the rotating shaft 36 to the conveyor belt 34 to achieve a seal. When the conveyor belt 34 moves the vertical plate 35 towards the discharge port 33, the vertical plate 35 pushes the first rotating blade 37 to rotate around the rotating shaft 36, clearing a path for the vertical plate 35 and the silt clumps between it; simultaneously, the immediately following second rotating blade 37 rotates between two adjacent vertical plates 35 and abuts against the top of the conveyor belt 34, thereby cutting off the path for external water to flow back into the sludge removal chamber 31. This structure, through the alternating cooperation of the rotating blade 37 and the vertical plate 35, ensures both the continuous discharge of sediment clumps and reliable sealing of the discharge port 33 during dynamic transport, effectively preventing backflow of external water. The second sealing element includes a sliding plate 38 disposed at the discharge port 32. The sliding plate 38 slides against the cavity wall of the desilting chamber 31 to open and close the discharge port 32. When the settling plate 23 pushes the sediment clumps into the desilting chamber 31, the sliding plate 38 retracts to open the discharge port 32, allowing the sediment to fall into the desilting chamber 31; at other times, the sliding plate 38 covers the discharge port 32 to prevent water flow from carrying sediment clumps back from the discharge port 32 to the first chamber 14.

[0037] The bubble generating device 5 is positioned at the top of the curtain 1 and extends in the width direction of the curtain 1 to form a bubble curtain within a height range from the top of the device to sea level. This bubble curtain can effectively intercept and block fine suspended particles from the construction side, further enhancing the anti-fouling barrier effect of the device.

[0038] The noise reduction layer 13 includes a noise reduction plate for absorbing noise generated during construction. Preferably, the noise reduction plate is provided with porous ceramic balls, which have excellent sound absorption properties and can convert sound energy into heat energy for dissipation, thereby achieving a significant noise reduction effect.

[0039] The stabilization assembly, used to ensure the stability and working posture of the device underwater, includes a propulsion mechanism 61, a counterweight 62, and an anchor 63. The propulsion mechanism 61 is fixed to the top of the main body and has power to generate thrust against the water along the thickness of the curtain 1, ensuring the device remains vertical by counteracting the impact of ocean currents. The counterweight 62 is located at the bottom of the main body, aiding in the sinking of the device and providing stability. The anchor 63 is connected to the main body and anchored to the seabed, firmly securing the device in the target water area.

[0040] In summary, the anti-fouling and noise reduction device provided in this embodiment of the invention has the characteristics of good anti-fouling effect, stable working performance and reliable structural design, and can effectively meet the control requirements of sediment diffusion and noise propagation in complex underwater environments. Specifically: (1) The device integrates sediment sedimentation and discharge, bubble curtain anti-fouling and sound absorption and noise reduction functions, forming multiple environmental treatment capabilities, which can effectively meet the problems of sediment diffusion and noise pollution caused by underwater construction. With the three-dimensional fixation components, the device can always maintain a stable and vertical working posture in complex ocean current environments, providing structural guarantee for the reliable performance of various functions. (2) The sedimentation mechanism 2 is ingeniously designed. The sedimentation plate 23 descends smoothly under the drive of the driving component, applying directional thrust to the flocculated sediment clumps and accelerating their sinking; the pressure-balancing channel opened on the sedimentation plate 23 can balance the upper and lower water pressures, avoiding disturbance and breakage of sediment clumps due to increased water resistance. The cooperation between the dredging needle 26 and the pressure-balancing channel realizes the active dredging of the channel, effectively preventing sediment blockage and ensuring the long-term stable operation of the sedimentation mechanism 2. (3) The sludge removal mechanism 3 achieves continuous and stable pushing of settled silt and sand clumps by setting a vertical plate 35 on the conveyor belt 34; the first sealing element adopts a structure in which the rotating blade 37 and the vertical plate 35 alternately cooperate, which reliably cuts off the backflow path of external water flow during dynamic transportation, ensuring smooth sludge discharge and maintaining the sealed state of the sludge removal chamber 31. The pumping action of the first pump body 41 on the sludge removal chamber 31 forms a negative pressure in the chamber, promoting further sedimentation of silt and sand clumps, making them less prone to secondary suspension after discharge. The above design together achieves rapid and stable sludge removal from the water body.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Any technically equivalent modifications made based on the content of this specification shall fall within the protection scope of the present invention.

Claims

1. An underwater anti-fouling and noise reduction device, characterized in that: It includes a functional main body and a fixation component; the functional main body includes a curtain, a sediment treatment component and a bubble generating device; wherein, the curtain includes a vertical baffle layer and a perforated layer and a noise reduction layer disposed on both sides of the baffle layer along the thickness direction; the perforated layer faces the ocean current and is disposed opposite to the baffle layer to enclose a first chamber; The sediment treatment assembly includes a feeding mechanism, a sedimentation aid mechanism, and a silt removal mechanism. The feeding mechanism includes a storage chamber containing flocculant and a feeding channel connecting the storage chamber to the first chamber. The sedimentation aid mechanism includes a first driving member located in the first chamber and a first movable member that moves up and down under the drive of the first driving member. The first movable member has a vertically connected pressure channel to apply a downward thrust to the sediment clumps flocculated in the first chamber. The silt removal mechanism is located at the bottom of the first chamber and has a silt removal channel connecting the bottom of the first chamber to the external water environment. The silt removal mechanism includes a second driving member and a second movable member that moves along the silt removal channel under the drive of the second driving member. The bubble generating device is positioned at the top of the curtain to form a bubble curtain within a height range from the top of the device to the sea level. The stabilization assembly includes a propulsion mechanism, a counterweight, and an anchor body; the propulsion mechanism is fixed to the top of the functional body and has power to generate thrust on the water along the thickness direction of the curtain; the counterweight is located at the bottom of the functional body; the anchor body is connected to the functional body and anchored to the seabed.

2. The underwater anti-fouling and noise reduction device according to claim 1, characterized in that: The silt removal mechanism encloses a silt removal chamber; the chamber wall of the silt removal chamber is provided with a silt passage communicating with the first chamber and a silt discharge port communicating with the external water environment; the silt passage and the silt discharge port are connected to form the silt removal channel.

3. The underwater anti-fouling and noise reduction device according to claim 2, characterized in that: The second movable component includes a conveyor belt disposed in the silt removal chamber; one end of the conveyor belt is located below the silt passage, and the other end extends out of the silt discharge port; the conveyor belt is provided with a plurality of vertical plates spaced apart along the longitudinal direction for pushing clumps of mud and sand falling onto the conveyor belt toward the silt discharge port.

4. The underwater antifouling and noise reduction device according to claim 3, characterized in that: The sludge removal mechanism further includes a first sealing element; the first sealing element includes a rotating shaft disposed at the upper edge and / or lower edge of the sludge discharge port and a plurality of rotating blades rotating around the rotating shaft; the width of the rotating blades is equal to the distance from the rotating shaft to the conveyor belt.

5. The underwater antifouling and noise reduction device according to claim 3, characterized in that: The sludge removal mechanism further includes a second sealing element; the sealing element includes a sliding plate disposed at the sludge passage; the sliding plate slides against the cavity wall of the sludge removal chamber to realize the opening and closing of the sludge passage.

6. The underwater anti-fouling and noise reduction device according to claim 1, characterized in that: The first driving component includes a first motor and a lead screw connected to the output end of the first motor, the lead screw being vertically disposed within the first chamber; the first movable component includes a sinking plate that cooperates with the lead screw for reversing transmission; the pressure balancing channel is disposed in the thickness direction of the sinking plate.

7. The underwater anti-fouling and noise reduction device according to claim 6, characterized in that: The first movable component also includes a sludge removal plate sleeved around the outer periphery of the lead screw; the sludge removal plate and the sinking aid plate are arranged opposite each other along the thickness direction, and the two are connected by a telescopic rod; the sludge removal plate is provided with a plurality of sludge removal needles aligned with the pressure channel on the side facing the sinking aid plate.

8. An underwater antifouling and noise reduction device according to any one of claims 2 to 5, characterized in that: A sealed second chamber is enclosed between the barrier layer and the noise reduction layer; the silt treatment assembly also includes a first pump body and a second pump body; the first pump body is located in the second chamber and is connected to the silt removal chamber; the second pump body is located on the top of the functional body and is connected to the second chamber.

9. The underwater anti-fouling and noise reduction device according to claim 1, characterized in that: The storage chamber is located in the partition layer; the partition layer has an intermittently opening and closing feeding port on the side facing the first chamber to serve as the feeding channel.

10. The underwater antifouling and noise reduction device according to claim 1, characterized in that: The noise reduction layer includes a noise reduction plate, which is provided with porous ceramic balls.

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