A system for cleaning marine growth from the bottom of a ship using a cover that is attracted to the growth

Abstract

The application discloses a kind of cover adsorption's ship bottom marine organism cleaning system, including cleaning device and biological treatment device;Clearing device includes car body and saw blade, car body is adsorbed on the surface of ship body and travels by the adsorption module carried;Saw blade is annular and surrounds outside car body, and the outer edge of saw blade is cutting position, and driving mechanism for driving saw blade rotation is arranged on car body;Collecting cover is also provided on car body, and negative pressure adsorption cavity is formed in collecting cover, and the bottom of negative pressure adsorption cavity is provided with collecting port opposite to saw blade cutting position, and the top of negative pressure adsorption cavity is sent to the biological treatment device by negative pressure pipeline with the seawater and organism residue collected.The cleaning car of the application is adsorbed on the bottom of ship by saw blade and is crushed marine organism, and organism residue is collected by negative pressure pipeline and collecting cover, to avoid organism residue directly falling into the sea.

Description

Technical Field

[0001] This invention relates to the field of ship cleaning technology, and more particularly to a hull-side marine organism cleaning system using a cover-type adsorption. Background Technology

[0002] During operation, marine organisms, such as barnacles, can attach to the hull of ships. This attachment increases drag and affects speed, so ships periodically enter dry dock for removal. However, during this process, some of the removed marine organisms detach from the hull and enter the sea, potentially causing biological invasions and disrupting the ecological balance. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a marine organism cleaning system for ship bottoms with a cover adsorption. After the cleaning vehicle crushes the marine organisms attached to the ship bottom with a saw blade, the biological residues are collected through a negative pressure pipe and a collection cover, preventing the biological residues from falling directly into the sea.

[0004] Technical Solution: To achieve the above objectives, the present invention provides a hull-side marine organism cleaning system using a cover-type adsorption, comprising a cleaning device and a biological treatment device. The cleaning device includes a vehicle body and a saw blade. The vehicle body travels on the surface of the hull by adsorbing onto the surface through an adsorption module. The saw blade is arranged in a ring around the vehicle body, with the outer edge of the saw blade serving as the cutting area. The vehicle body is equipped with a drive mechanism for rotating the saw blade. The vehicle body is also equipped with a collection cover, which forms a negative pressure adsorption chamber. The bottom of the negative pressure adsorption chamber has a collection port opposite to the cutting area of ​​the saw blade. The top of the negative pressure adsorption chamber sends the collected seawater and biological residues to the biological treatment device through a negative pressure pipe.

[0005] Furthermore, a brush is provided at the bottom of the saw blade, and the brush can rotate synchronously with the saw blade.

[0006] Furthermore, a rotating frame is rotatably mounted on the vehicle body, and the saw blade is connected to the rotating frame and can rotate synchronously with the rotating frame; the saw blade and the rotating frame are slidably engaged, and the saw blade can also slide up and down relative to the rotating frame.

[0007] Furthermore, the rotating frame is equipped with a pressure spring, which applies pressure to the saw blade, causing the saw blade to tend to move downward relative to the rotating frame; the brush supports the saw blade accordingly, so that the saw blade maintains a distance from the surface of the hull.

[0008] Furthermore, a shim is provided at the bottom of the saw blade, and the shim is placed between the saw blade and the surface of the hull.

[0009] Furthermore, a flow guide hood is provided below the collection hood, and an annular negative pressure adsorption chamber is formed between the flow guide hood and the collection hood. An annular collection port is formed at the bottom of the negative pressure adsorption chamber, and the annular collection port is opposite to the outer edge of the saw blade.

[0010] Furthermore, the collection hood is fixedly connected to the vehicle body; the flow guide is fixedly connected to the saw blade, and the flow guide can rotate and rise and fall with the saw blade; the top of the flow guide is provided with an elastic plate opposite to the throat of the collection hood, and the elastic plate can vibrate accordingly when the flow guide rises and falls with the saw blade.

[0011] Furthermore, the drive mechanism includes a motor mounted on the vehicle body, and the motor is driven by the rotating frame through gear meshing.

[0012] Furthermore, the adsorption module includes a magnet installed at the bottom of the vehicle body.

[0013] Furthermore, the biological treatment device includes a filtration module and a disinfection module. A negative pressure pipeline sends seawater and biological residue into the filtration module for filtration, and the filtered seawater is discharged after being inactivated by the disinfection module.

[0014] Beneficial effects: The beneficial effects of the hull-mounted marine organism cleaning system of the present invention are as follows:

[0015] 1) A saw blade is installed on the outer periphery of the cleaning vehicle. The saw blade crushes the marine organisms attached to the hull for initial treatment. The crushed marine organism residue is collected immediately by the negative pressure pipe above. A brush is added below the saw blade to perform secondary fine cleaning of marine organism residues and stubborn attachments, thus forming a three-stage marine organism cleaning process of "initial crushing - residue collection - fine polishing".

[0016] 2) The saw blade can move up and down adaptively under the downward pressure of the pressure spring, ensuring that the brush at the bottom of the saw blade is always in close contact with the curved surface of the hull, thus ensuring the stability of the debris cleaning effect.

[0017] 3) The guide shield below the collection hood is fixedly connected to the saw blade. The top of the guide shield has an elastic plate opposite to the throat of the collection hood. When the guide shield rises and falls with the saw blade, the elastic plate can vibrate accordingly, exerting force on the marine biological debris blocking the throat of the collection hood, causing the bridge to collapse. Attached Figure Description

[0018] Appendix Figure 1 This is a front view of the cleaning device;

[0019] Appendix Figure 2 This is a schematic diagram of the bottom structure of the cleaning device;

[0020] Appendix Figure 3 This is a cross-sectional view of the cleaning device;

[0021] Appendix Figure 4 This is a schematic diagram of the internal structure of the cleaning device;

[0022] Appendix Figure 5 This is a schematic diagram of a rotary drum microfiltration machine;

[0023] Appendix Figure 6 This is a schematic diagram of an ultraviolet disinfection device. Detailed Implementation

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] As attached Figures 1 to 6 A hull-side marine organism cleaning system using a cover-and-adsorption mechanism includes a cleaning device and a biological treatment device. The cleaning device comprises a vehicle body 16 and a saw blade 2. The vehicle body 16 travels along the hull surface via an adsorption module. The saw blade 2 is arranged in a ring around the vehicle body 16, with its outer edge serving as the cutting area. The vehicle body 16 is equipped with a drive mechanism for rotating the saw blade 2. A collection cover 8 is also installed on the vehicle body 16, forming a negative pressure adsorption chamber 15. The bottom of the negative pressure adsorption chamber 15 has an annular collection port opposite to the cutting area of ​​the saw blade 2. The top of the negative pressure adsorption chamber 15, through a negative pressure pipe 12, delivers the collected seawater and biological debris to the biological treatment device.

[0026] Because the vehicle body 16 is equipped with a dedicated collection hood 8, and the coverage area of ​​the collection hood 8 precisely corresponds to the working area of ​​the saw blade 2, the marine organisms, after being shredded by the saw blade 2, can be directly confined within the limited space by the collection hood 8. A negative pressure is generated in the negative pressure pipe 12 by a negative pressure generating device, and then the shredded marine organism debris is quickly sucked away through the negative pressure pipe 12, preventing the debris from re-adhering to the hull and reducing dust pollution generated during the cleaning process.

[0027] A brush 3 is installed at the bottom of the saw blade 2, located on the inner ring of the saw blade 2, and can rotate synchronously with the saw blade 2. The saw blade 2 is mounted on the vehicle body 16 to perform initial crushing of marine organisms attached to the hull; the crushed marine organism residue is collected immediately by the negative pressure pipe 12 above; the brush 3 is added below the saw blade 2 to perform secondary fine cleaning of marine organism residue and stubborn attachments, achieving efficient and non-destructive cleaning of marine organisms on the hull. This forms a three-stage marine organism cleaning process of "initial crushing - residue collection - fine grinding".

[0028] A rotating frame 17 is rotatably mounted on the vehicle body 16. The saw blade 2 is connected to the rotating frame 17 and can rotate synchronously with the rotating frame 17. The saw blade 2 is slidably engaged with the rotating frame 17, and the saw blade 2 can also slide up and down relative to the rotating frame 17. This allows the saw blade 2 to be adjusted up and down relative to the vehicle body 16 so that the saw blade 2 can adapt to the surface of the hull.

[0029] The rotating frame 17 is equipped with a pressure spring 14, which applies pressure to the saw blade 2, causing the saw blade 2 to tend to move downwards relative to the rotating frame 17. The brush 3 supports the saw blade 2, maintaining a distance between the saw blade 2 and the hull surface. Therefore, the brush 3 has two functions. First, the brush 3 attached to the bottom of the saw blade 2 allows for secondary cleaning of marine life debris during operation. Second, the brush 3 ensures a safe distance between the saw blade 2 and the hull surface, allowing the saw blade 2 to only process marine life without damaging the coating on the hull bottom.

[0030] The rotating frame 17 is equipped with a slide rail, and the saw blade 2 is connected to the I-shaped slider 10. The I-shaped slider 10 can slide freely in the slide rail, so the saw blade 2 can slide up and down relative to the rotating frame 17. With the help of the downward pressure of the pressure spring 14, the saw blade 2 can move up and down adaptively, ensuring that the brush 3 at the bottom of the saw blade 2 is always in close contact with the curved surface of the hull, thus ensuring the stability of the debris cleaning effect.

[0031] A shim 4 is provided at the bottom of the saw blade 2, which is placed between the saw blade 2 and the surface of the hull. Because of the shim 4 at the bottom of the saw blade 2, even if the brush 3 wears down during long-term operation, causing the height of the saw blade 2 to decrease, the shim 4 can still play a limiting role, ensuring the minimum safe distance between the saw blade 2 and the hull, and preventing damage to the hull.

[0032] Below the collection hood 8, a flow guide hood 11 is provided. Both the flow guide hood 11 and the collection hood 8 are conical hoods. An annular negative pressure adsorption chamber 15 is formed between the flow guide hood 11 and the collection hood 8. An annular collection port is formed at the bottom of the negative pressure adsorption chamber 15. The annular collection port is opposite to the outer edge of the saw blade 2, so that the airflow generated by the negative pressure pipe 12 can be more concentratedly transmitted to the outer edge of the saw blade 2 to adsorb the marine organism remains crushed by the outer edge of the saw blade 2.

[0033] Because the collection hood 8 is conical with a narrow throat, marine debris can easily bridge at the throat, causing blockages. To address this issue, the collection hood 8 is fixedly connected to the vehicle body 16 and does not rotate or rise / fall with the saw blade 2; however, the flow guide hood 11 is fixedly connected to the saw blade 2 and can rotate and rise / fall with it. An elastic plate 18 is located at the top of the flow guide hood 11, opposite the throat of the collection hood 8. When the flow guide hood 11 rises / falls with the saw blade 2, the elastic plate 18 vibrates accordingly. This vibration exerts a force on the biological debris clogging the throat of the collection hood 8, causing the bridge to collapse. Furthermore, the flow guide hood 11, when rotating with the saw blade 2, also disturbs the biological debris in the throat of the collection hood 8, further helping to break up bridges and prevent blockages.

[0034] A hole is made in the center of the elastic sheet 18, and a support frame 19 is provided on the vehicle body 16. The support frame 19 passes through the center hole of the elastic sheet 18 and is connected to the collection cover 8 so that the collection cover 8 is fixedly connected to the vehicle body 16. The support frame 19 and the center hole of the elastic sheet 18 are in sliding sealing fit, and the elastic sheet 18 can be raised and lowered relative to the support frame 19.

[0035] The adsorption module includes a magnet 9 installed at the bottom of the vehicle body 16. A strong magnetic adsorption component is configured at the bottom of the vehicle body 16, which can generate a stable adsorption force. The magnetic force can be adjusted according to the thickness of the ship's steel plate, so that the vehicle body 16 can be firmly attached to the surface of the ship. Even when working on the inclined or vertical surface of the ship, the vehicle body 16 can be effectively prevented from slipping, ensuring the safety and stability of the cleaning operation.

[0036] Furthermore, the vehicle body 16's walking system utilizes Mecanum wheels 1, which, thanks to their omnidirectional movement, enable flexible movement without static friction constraints. During cleaning operations, the vehicle body 16 can cover the entire hull area simply by translational movement, without the need for extensive rotation, ensuring that every area is cleaned evenly.

[0037] The drive mechanism includes a motor 5 mounted on the vehicle body 16, which is driven by a gear meshing mechanism with the rotating frame 17. A composite transmission structure of motor 5-gear-bearing 7 is used between the vehicle body 16 and the saw blade 2. The motor 5 driving the saw blade 2 is mounted on the vehicle body 16, and the motor 5 is driven by a gear meshing mechanism with the rotating frame 17. An external gear 6 is connected to the output rod of the motor 5, and an internal gear 13 meshing with the external gear 6 is provided on the inner side of the rotating frame 17. When the rotating frame 17 rotates, it correspondingly drives the saw blade 2 to rotate. The gear structure effectively reduces the output speed of the motor 5 while increasing the torque, making the saw blade 2's crushing operation of marine organisms more stable and controllable. A bearing 7 is installed between the vehicle body 16 and the rotating frame 17 to ensure that while the saw blade 2 rotates at high speed, the vehicle body 16 is not affected by its rotation, maintaining a stable adsorption and movement state.

[0038] The processing steps of this invention are as follows: First, the marine organisms adsorbed on the hull surface are cut and crushed using an adjustable saw blade 2, completing the initial treatment. Then, the crushed marine organism debris is collected under negative pressure using an upper negative pressure pipe 12. Finally, the remaining marine organism remains on the hull are further polished using a brush 3 below the saw blade 2 to ensure the hull surface is clean. The biological treatment device includes a filtration module and a disinfection module. The biological treatment device can be directly placed on the ship's hull. The negative pressure pipe 12 sends seawater and biological remains into the filtration module for filtration. The filtered seawater is then inactivated by the disinfection module before being discharged.

[0039] Filtering module as attached Figure 5The rotary drum microfilter 20 shown in the figure consists of a drum 21, a drive unit 22, an inlet water system, an outlet water system, and a backwashing system.

[0040] The drum 21 is the core filtration component of the rotary drum microfilter 20, typically a horizontally placed cylindrical structure. The main body of the drum 21 is constructed of a metal frame, providing strong structural stability. A stainless steel support mesh and a working filter screen are sequentially wrapped around the frame. The support mesh primarily acts as a skeleton, enhancing overall strength; the working filter screen is a woven stainless steel wire mesh, with mesh size selectable according to actual water quality and treatment requirements, commonly ranging from 50 to 300 mesh to achieve different filtration accuracies, typically between 30 and 220 microns. When wastewater passes through the filter screen, suspended solids larger than the mesh openings are trapped on the screen surface, forming a filter cake, while water passes through and enters the interior.

[0041] The drive unit 22 provides rotational power to the drum 21 and typically consists of a motor 5, a reducer, and transmission gears. After the motor 5's speed is reduced by the reducer, it drives the drum 21 to rotate slowly via gears or a chain drive, with the speed generally controlled between 1 and 3 revolutions per minute. The speed design needs to balance filtration efficiency and effect: too high a speed can cause trapped marine debris or other particles to break apart due to mechanical shearing, forming finer particles that penetrate the filter screen and reduce the retention rate; too low a speed will affect the amount of water processed per unit time.

[0042] The inlet system is responsible for uniformly introducing seawater mixed with marine biological debris into the microfilter, and mainly includes an inlet pipe and a water distributor. Wastewater is transported to one end of the equipment via the pipe and then enters the water distributor. The water distributor typically has a baffle plate or weir structure, which can briefly stabilize and distribute the water flow, allowing the wastewater to be evenly sprayed along the axial direction of the drum 21 onto the outer surface of the rotating filter screen. The water distribution process is generally opposite to the rotation direction of the drum 21 to increase the contact time and area between the water and the filter screen, avoid uneven distribution caused by water flow impact, and thus improve filtration efficiency and filter screen utilization.

[0043] The effluent system is used to collect and discharge the filtered clean water. A collection tank or pipe is located at a lower position inside the drum 21. The clean water that has permeated the filter screen collects here by gravity, and then exits the equipment through the effluent pipe to enter the next stage of water treatment, such as biological treatment, deep filtration, or a reuse system. The quality of the effluent depends on the mesh size of the filter screen and the formation of the filter cake; it generally effectively removes most suspended solids and some colloidal substances.

[0044] As filtration continues, the filter screen surface gradually becomes covered with trapped marine debris, leading to clogging and increased filtration resistance and decreased flux. To restore filtration capacity, the microfilter is equipped with an automatic backwashing system. This system typically features one or more rows of nozzles at the top of the drum 21, connected to high-pressure flushing water pipes. When the drum 21 rotates to a specific position, the nozzles spray high-pressure water jets, sometimes in conjunction with air or chemical cleaning agents, to flush the filter screen from the inside out, removing the filter cake adhering to the screen surface. The flushed waste falls into a collection trough or conveyor below the equipment and is periodically discharged.

[0045] Disinfection module as attached Figure 6 The ultraviolet disinfection device 24 shown in the figure mainly uses ultraviolet light to inactivate microorganisms. That is, when titanium dioxide is irradiated with ultraviolet light, hydroxyl radicals are generated. These radicals will take away hydrogen elements in the cell membrane of microorganisms, thereby killing the microorganisms.

[0046] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A hull-mounted marine organism cleaning system using a cap-mounted adsorption system, characterized in that: It includes a cleaning device and a biological treatment device; the cleaning device includes a vehicle body (16) and a saw blade (2). The vehicle body (16) travels on the surface of the ship by adsorbing the adsorption module it is equipped with; the saw blade (2) is arranged in a ring around the vehicle body (16), and the outer edge of the saw blade (2) is the cutting part. The vehicle body (16) is provided with a drive mechanism for driving the saw blade (2) to rotate; the vehicle body (16) is also provided with a collection hood (8), and a negative pressure adsorption chamber (15) is formed inside the collection hood (8). The bottom of the negative pressure adsorption chamber (15) is provided with a collection port opposite to the cutting part of the saw blade (2). The top of the negative pressure adsorption chamber (15) sends the collected seawater and biological residues to the biological treatment device through a negative pressure pipe (12).

2. The hull-mounted marine organism cleaning system with cap adsorption according to claim 1, characterized in that: The bottom of the saw blade (2) is provided with a brush (3), which can rotate synchronously with the saw blade (2).

3. The hull-mounted marine organism cleaning system with cap adsorption according to claim 2, characterized in that: The vehicle body (16) is rotatably provided with a rotating frame (17), and the saw blade (2) is connected to the rotating frame (17) and can rotate synchronously with the rotating frame (17); the saw blade (2) slides with the rotating frame (17), and the saw blade (2) can also slide up and down relative to the rotating frame (17).

4. The hull-mounted marine organism cleaning system with cap adsorption according to claim 3, characterized in that: The rotating frame (17) is provided with a pressure spring (14), which applies pressure to the saw blade (2), causing the saw blade (2) to have a downward movement tendency relative to the rotating frame (17); the brush (3) supports the saw blade (2) to maintain a distance between the saw blade (2) and the surface of the hull.

5. The hull-mounted marine organism cleaning system with cap adsorption according to claim 4, characterized in that: A shim (4) is provided at the bottom of the saw blade (2), and the shim (4) is placed between the saw blade (2) and the surface of the hull.

6. The hull-mounted marine organism cleaning system with cap adsorption according to claim 3, characterized in that: A flow guide hood (11) is provided below the collection hood (8). An annular negative pressure adsorption chamber (15) is formed between the flow guide hood (11) and the collection hood (8). An annular collection port is formed at the bottom of the negative pressure adsorption chamber (15). The annular collection port is opposite to the outer edge of the saw blade (2).

7. A hull-mounted marine organism cleaning system for adsorption under a cover according to claim 6, characterized in that: The collecting cover (8) is fixedly connected to the vehicle body (16); the flow guide (11) is fixedly connected to the saw blade (2), and the flow guide (11) can rotate and rise and fall with the saw blade (2); the top of the flow guide (11) is provided with an elastic plate (18) opposite to the throat of the collecting cover (8), and the elastic plate (18) can vibrate accordingly when the flow guide (11) rises and falls with the saw blade (2).

8. A hull-mounted marine organism cleaning system for adsorption under a cover according to claim 3, characterized in that: The drive mechanism includes a motor (5) mounted on the vehicle body (16), and the motor (5) and the rotating frame (17) are driven by gear meshing.

9. A hull-mounted marine organism cleaning system for adsorption under a cover according to claim 1, characterized in that: The adsorption module includes a magnet (9) installed at the bottom of the vehicle body (16).

10. A hull-mounted marine organism cleaning system for adsorption under a cover according to claim 1, characterized in that: The biological treatment device includes a filtration module and a disinfection module. The negative pressure pipe (12) sends seawater and biological residues into the filtration module for filtration. The filtered seawater is then discharged after being inactivated by the disinfection module.

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