A cleaning device and a cleaning method for aquaculture cage nets

Abstract

The present invention discloses a cleaning device and a cleaning method for aquaculture net cage nets, comprising a cleaning body and an auxiliary rolling wheel, the cleaning body comprising a frame and three cleaning units mounted on the frame, each cleaning unit comprising a driving magnetic wheel, a front-drive high-pressure water pipe, a rear-drive high-pressure water pipe and an eccentric wheel vibration device, the driving magnetic wheel is rotatably arranged on the frame, each driving magnetic wheel has an auxiliary rolling wheel adsorbed by magnetic force, the front-drive high-pressure water pipe and the rear-drive high-pressure water pipe are respectively connected to the two ends of the driving magnetic wheel, the driving magnetic wheel is respectively formed with a front-drive water flow channel and a rear-drive water flow channel connected with the front-drive high-pressure water pipe and the rear-drive high-pressure water pipe and penetrating the outer surface of the driving magnetic wheel, and the eccentric wheel vibration device is connected to the driving magnetic wheel through gear meshing. The present invention can directly perform all-round cleaning of attachments on the net by rolling and spraying in a dual manner without disassembling the net, and can remove various soft and hard marine attached organisms, with remarkable effect.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture, and in particular to a cleaning device and a cleaning method for aquaculture cage nets. Background Art

[0002] A huge problem that the marine cage aquaculture industry often faces is the removal of marine organisms attached to the nets. The attached organisms on the nets often clog the mesh, resulting in limited water exchange inside and outside the cages, poor water environment conditions in the aquaculture space inside the cages, insufficient dissolved oxygen supply, and increased fish feed coefficients, increasing the frequency of fish diseases and reducing fish survival rates. In some waters of the South China Sea, if the nets are not replaced or cleaned for a long time, marine organisms can completely clog the mesh, and in severe cases, even cause fish to die directly due to lack of oxygen.

[0003] At the same time, a large number of marine attachments on the net will increase the gravity of the cage. The marine attachments will increase the force-bearing area of ​​the net that is subjected to external loads, causing a significant increase in the current load on the cage, which in turn leads to a significant decrease in the safety performance of the cage.

[0004] Usually, marine cage aquaculture practitioners remove the nets from the cages, replace them with clean ones, and then recycle the nets to the shore for sun exposure and cleaning, and finally use hard objects such as wood to knock off the hard marine organisms that are difficult to remove. However, this approach has many limitations and consumes a lot of manpower and material resources. At the same time, it is quite difficult to implement for some cages where it is difficult to remove the nets.

[0005] At present, many types of underwater net washing machines have been developed at home and abroad. The principle is basically to use high-pressure water jets or brush friction to remove the attachments on the net. These net washing machines have the following shortcomings:

[0006] 1) The cleaning effect is better for soft marine attached organisms on the nets, such as seaweed and seagrass, but it is difficult to remove hard attached organisms, especially hard marine organisms such as barnacles, oysters, mussels, etc. that are usually attached to the nets in marine cage aquaculture. In particular, the shell of oysters is very hard, and oysters usually wrap the net wire under their hard shell during their growth. It is almost impossible to remove them by spraying, brushing, etc.

[0007] 2) The cleaning of the net is limited to one side only, and it is not possible to clean both sides of the net at the same time.

[0008] 3) As there are usually strong currents and waves in the marine environment, the nets in the cages will vibrate and swing, causing the above-mentioned net washing machine to not fit the nets well enough and the cleaning effect to be poor. Summary of the invention

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a cleaning device and a cleaning method for the netting of aquaculture cages. Without removing the net, the attachments on the netting are directly cleaned in an all-round manner through the dual methods of rolling and spraying, which can remove various soft and hard marine fouling organisms, and the effect is remarkable.

[0010] The first purpose of the present invention is to provide a cleaning device for the netting of aquaculture cages.

[0011] The second purpose of the present invention is to provide a netting cleaning method for aquaculture cages.

[0012] The first purpose of the present invention can be achieved by adopting the following technical solutions:

[0013] A cleaning device for the netting of aquaculture cages includes a cleaning main body and an auxiliary rolling wheel respectively arranged on both sides of the netting. The cleaning main body includes a frame and three cleaning units installed on the frame in a "pin" shape. Each cleaning unit includes a driving magnetic wheel, a front driving high-pressure water pipe, a rear driving high-pressure water pipe, and an eccentric wheel vibration device. The driving magnetic wheel is rotatably arranged on the frame and is located on one side of the netting. Each driving magnetic wheel magnetically adsorbs an auxiliary rolling wheel. The auxiliary rolling wheel is arranged on the other side of the netting. The netting is pressed between the auxiliary rolling wheel and the corresponding driving magnetic wheel to roll the fouling organisms on the netting. The front driving high-pressure water pipe and the rear driving high-pressure water pipe are respectively connected to both ends of the driving magnetic wheel. A front driving water flow channel and a rear driving water flow channel that communicate with the front driving high-pressure water pipe and the rear driving high-pressure water pipe and penetrate the outer surface of the driving magnetic wheel are respectively formed inside the driving magnetic wheel. The high-pressure water in the front driving high-pressure water pipe is sprayed onto the surface of the netting through the front driving water flow channel to clean the netting. At the same time, the driving magnetic wheel is driven to move forward by the reaction force of the high-pressure water flow, or the high-pressure water in the rear driving high-pressure water pipe is sprayed onto the surface of the netting through the rear driving water flow channel to clean the netting. At the same time, the driving magnetic wheel is driven to move backward by the reaction force of the high-pressure water flow. The eccentric wheel vibration device is connected to the driving magnetic wheel through gear meshing. The driving magnetic wheel drives the eccentric wheel vibration device to vibrate, thereby removing the fouling organisms on the netting.

[0014] Further, the driving magnetic wheel includes a magnetic wheel main shaft, a magnetic wheel main shaft bearing, a magnetic wheel main shaft gear, a magnet cylinder, a polymer polyethylene gear, a magnetic wheel movable shaft, a movable valve and an annular baffle; the two ends of the magnetic wheel main shaft are respectively arranged on the frame through the magnetic wheel main shaft bearings, and the two ends of the magnetic wheel main shaft are installed with magnetic wheel main shaft gears located beside the magnetic wheel main shaft bearings, the magnet cylinder is sleeved on the outside of the magnetic wheel main shaft, and the polymer polyethylene gear is sleeved on the outside of the magnet cylinder, and the magnetic wheel main shaft, the magnet cylinder and the polymer polyethylene gear form a magnetic wheel body that can rotate synchronously; wherein, the magnetic wheel main shaft is a hollow tubular structure, wherein the hollow inner cavity is composed of a first hollow inner cavity and a second hollow inner cavity located on both sides of the first hollow inner cavity, the diameter of the first hollow inner cavity is larger than the diameter of the second hollow inner cavity, The magnetic wheel movable shaft is movably installed in the first hollow inner cavity, and its outer diameter matches the diameter of the first hollow inner cavity, and the length of the first hollow inner cavity is greater than the length of the magnetic wheel movable shaft. The two ends of the first hollow inner cavity are connected with the front drive high-pressure water pipe and the rear drive high-pressure water pipe arranged at the two ends of the magnetic wheel main shaft through the second hollow inner cavity. The magnetic wheel movable shaft is a hollow tubular structure, and a plurality of first through holes are evenly arranged on its surface along the circumferential direction. The first through holes are connected with the hollow inner cavity of the magnetic wheel movable shaft, and movable valves are respectively arranged at the two ends of the hollow inner cavity, and a plurality of annular baffles are evenly distributed on the circumferential surface of the hollow inner cavity. The annular baffles drive the magnetic wheel movable shaft to move in the first The gear wheel slides axially in a hollow inner cavity; a plurality of second through holes and a third through holes are evenly arranged on the surface of the magnetic wheel body along the circumferential direction, and the second through holes and the third through holes are alternately arranged along the axial direction of the magnetic wheel body, the outlets of the second through holes and the third through holes are respectively located on the two side surfaces of the gear teeth of the polymer polyethylene gear, and the outlets of the second through holes and the third through holes on the polymer polyethylene gear are arranged along the tangent directions of their respective corresponding side surfaces, and the injection directions of the two outlets are opposite, the plurality of second through holes form a front drive water flow channel, and the plurality of third through holes form a rear drive water flow channel, and the reaction force of the high-pressure water flow drives the driving magnetic wheel forward or backward.

[0015] Furthermore, a limiting pin is provided between the magnetic wheel movable shaft and the magnetic wheel main shaft for preventing the magnetic wheel movable shaft from rotating.

[0016] Furthermore, the eccentric wheel vibration device includes an eccentric shaft, an eccentric wheel bearing, an eccentric wheel and an eccentric wheel gear. One end of the eccentric shaft is connected to the frame through the eccentric wheel bearing, and the eccentric wheel is connected to the other end of the eccentric shaft. The eccentric wheel gear is mounted on the eccentric shaft and meshes with the external gear of the magnetic wheel main shaft that drives the magnetic wheel.

[0017] Furthermore, the auxiliary rolling wheel is an iron cylinder having the same size as the driving magnetic wheel.

[0018] The second object of the present invention can be achieved by adopting the following technical solutions:

[0019] A method for cleaning nets of aquaculture cages, using the above-mentioned cleaning device, is as follows:

[0020] Equipment preparation: Place the cleaning body on the inner side of the net, then place the auxiliary rolling wheel on the outer side of the net according to the position of its driving magnetic wheel, so that the auxiliary rolling wheel is adsorbed on the driving magnetic wheel, and the net is pressed between the driving magnetic wheel and the auxiliary rolling wheel. The cleaning body is attached to the net by the friction between the polymer polyethylene gear and the net, and an image acquisition unit for acquiring images around the cleaning device is installed on the cleaning body to complete the preparation work;

[0021] Net cleaning: open the high-pressure water source valves of all front-drive high-pressure water pipes, drive the magnetic wheel forward under the reaction of the high-pressure water flow and drive the entire cleaning device forward. During the forward process, the attached organisms on the surface of the net are crushed by the auxiliary crushing wheel and the driving magnetic wheel, and then the net is cleaned by the high-pressure water flow ejected from the surface of the driving magnetic wheel. At the same time, the driving magnetic wheel drives the eccentric wheel vibration device to vibrate, thereby removing the attached organisms on the net. At the same time, during the cleaning process, the image acquisition unit collects images around the cleaning device, and controls the switches of the high-pressure water source valves of the front-drive high-pressure water pipes or the rear-drive high-pressure water pipes of the three cleaning units according to the collected images, thereby controlling the forward, reverse or backward movement of the clothes cleaning device;

[0022] Equipment recovery: After the net is cleaned, drive the entire cleaning device to the net above the water surface, close the high-pressure water source valve, and retrieve the cleaning device.

[0023] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0024] 1. The present invention adopts the method of first rolling and then high-pressure water spraying. First, a variety of hard attached organisms including mussels, barnacles, and oysters on the net are removed by rolling by driving magnetic wheels and auxiliary rolling wheels. Then, soft attached organisms and hard attached organisms that have not fallen off after rolling are completely removed by high-pressure water spraying. The cleaning effect is very significant. At the same time, high-pressure water spraying can push the entire device forward or backward, and there is no need to install an additional drive system on the device. The structure is simple and the cost is low.

[0025] 2. Conventional net washing machines can only clean one side of the net and then the other side. The present invention can simultaneously remove hard and soft attached organisms on the front and back sides of the net by rolling the two sides against each other, and the effect is very significant.

[0026] 3. The driving magnetic wheel and the auxiliary rolling wheel of the present invention fit tightly together through the effect of the magnetic field. At the same time, the gear surface of the driving magnetic wheel can prevent the entire device from sliding on the surface of the net. It is suitable for various severe sea conditions and can work in a variety of postures. It can clean the side nets, bottom nets, top nets and other parts of the cage net in all directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the cleaning device of the present invention.

[0028] Figure 2 It is a top view of the cleaning device of the present invention.

[0029] Figure 3 It is a schematic structural diagram of the driving magnetic wheel of the present invention.

[0030] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0031] Figure 5 It is a structural schematic diagram of the eccentric wheel vibration device of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 5As shown in the figure, this embodiment provides a cleaning device for the netting of a breeding cage, which includes a cleaning main body and an auxiliary rolling wheel 1 respectively arranged on both sides of the netting. The cleaning main body includes a frame 7 and three cleaning units installed on the frame 7 in a "pin" shape. The number of cleaning units can be set according to actual needs. In this embodiment, the three cleaning units are a left cleaning unit, a right cleaning unit, and a rear cleaning unit respectively. Each cleaning unit includes a driving magnetic wheel 2, a front high-pressure water pipe 3, a rear high-pressure water pipe 4, and an eccentric wheel vibration device 5. The driving magnetic wheel 2 is rotatably arranged on the frame and is located on one side of the netting 6. Each driving magnetic wheel 2 magnetically adsorbs an auxiliary rolling wheel 1. The auxiliary rolling wheel 1 is arranged on the other side of the netting 6. The netting is pressed between the auxiliary rolling wheel 1 and the corresponding driving magnetic wheel 2 to roll the attached organisms on the netting. The front high-pressure water pipe 3 and the rear high-pressure water pipe 4 are respectively connected to both ends of the driving magnetic wheel 2, and all the high-pressure water pipes are installed along the frame. The driving magnetic wheel 2 is respectively formed with a front driving water flow channel and a rear driving water flow channel that communicate with the front high-pressure water pipe 3 and the rear high-pressure water pipe 4 and penetrate the outer surface of the driving magnetic wheel 2. The high-pressure water in the front high-pressure water pipe 3 is sprayed onto the surface of the netting through the front driving water flow channel to clean the netting. At the same time, the driving magnetic wheel 2 is driven to move forward by the reaction force of the high-pressure water flow, or the high-pressure water in the rear high-pressure water pipe 4 is sprayed onto the surface of the netting through the rear driving water flow channel to clean the netting. At the same time, the driving magnetic wheel 2 is driven to move backward by the reaction force of the high-pressure water flow. The eccentric wheel vibration device 5 is connected to the driving magnetic wheel 2 through gear meshing. The driving magnetic wheel 2 drives the eccentric wheel vibration device 5 to vibrate, thereby removing the attached organisms on the netting.

[0034] Specifically, the driving magnetic wheel 2 includes a magnetic wheel main shaft 201, a magnetic wheel main shaft bearing 202, a magnetic wheel main shaft gear 203, a magnet cylinder 204, a polymer polyethylene gear 205, a magnetic wheel movable shaft 206, a movable valve 207 and an annular baffle 208; the two ends of the magnetic wheel main shaft 201 are respectively arranged on the frame through the magnetic wheel main shaft bearing 202, and the two ends of the magnetic wheel main shaft 201 are installed with magnetic wheel main shaft gears 203 located beside the magnetic wheel main shaft bearing 202, the magnet cylinder 204 is sleeved on the outer side of the magnetic wheel main shaft 201, and the polymer polyethylene gear 205 is sleeved on the outer side of the magnet cylinder 204. The magnetic wheel main body 201 is a hollow tubular structure, wherein the hollow inner cavity is composed of a first hollow inner cavity 2011 and a second hollow inner cavity 2012 located on both sides of the first hollow inner cavity 2011. The diameter of the first hollow inner cavity 2011 is greater than the diameter of the second hollow inner cavity 2012. The magnetic wheel movable shaft 206 is movably installed in the first hollow inner cavity 2011, and its outer diameter matches the diameter of the first hollow inner cavity 2011. The length of the first hollow inner cavity 2011 is greater than the length of the magnetic wheel movable shaft 206. The two ends of the first hollow inner cavity 2011 are connected to the front high-pressure water pump 206 at both ends of the magnetic wheel main shaft 201 through the second hollow inner cavity 2012. The pipe 3 is connected to the rear-drive high-pressure water pipe 4, and the two ends of the magnetic wheel main shaft 201 are respectively connected to the front-drive high-pressure water pipe 3 and the rear-drive high-pressure water pipe 4 through a rotatable high-pressure water joint 212. The magnetic wheel movable shaft 206 is a hollow tubular structure, and a plurality of first through holes 2061 are evenly arranged on its surface along the circumferential direction. The first through holes 2061 are connected to the hollow inner cavity 2062 of the magnetic wheel movable shaft 206, and the two ends of the hollow inner cavity 2062 are respectively provided with movable valves 207, and a plurality of annular baffles 208 are evenly distributed on the circumferential surface of the hollow inner cavity 2062. The annular baffles 208 drive the magnetic wheel movable shaft 206 to slide along its axial direction in the first hollow inner cavity 2011 under the impetus of the high-pressure water flow; the magnetic wheel body A plurality of second through holes 209 and a third through hole 210 are evenly arranged along the circumferential direction on the surface of the magnetic wheel, and the second through holes 209 and the third through holes 210 are alternately arranged along the axial direction of the magnetic wheel body. The outlets of the second through holes 209 and the third through holes 210 are respectively located on the two side surfaces of the gear teeth of the polymer polyethylene gear 205, and the outlets of the second through holes 209 and the third through holes 210 on the polymer polyethylene gear 205 are arranged along the tangent directions of their respective corresponding side surfaces, and the injection directions of the two outlets are opposite. The plurality of second through holes 209 form a front-drive water flow channel, and the plurality of third through holes 210 form a rear-drive water flow channel, and the reaction force of the high-pressure water flow drives the driving magnetic wheel 2 forward or backward.

[0035] Specifically, a limiting pin 211 is provided between the magnetic wheel movable shaft 206 and the magnetic wheel main shaft 201 for preventing the magnetic wheel movable shaft 206 from rotating.

[0036] Specifically, the eccentric wheel vibration device 5 includes an eccentric shaft 501, an eccentric wheel bearing 502, an eccentric wheel 503 and an eccentric wheel gear 504. One end of the eccentric shaft 501 is connected to the frame through the eccentric wheel bearing 502, and the eccentric wheel 503 is connected to the other end of the eccentric shaft 501. The eccentric wheel gear 504 is installed on the eccentric shaft 501 and meshes with the external of the magnetic wheel main shaft gear 203.

[0037] Specifically, the auxiliary rolling wheel 1 is an iron cylinder having the same shape and size as the driving magnetic wheel 2 .

[0038] This embodiment also provides a method for cleaning the nets of aquaculture cages, using the above-mentioned cleaning device, as follows:

[0039] Equipment preparation: Use a cable to pass through the frame and hang the cleaning body against the inner side of the net. Then, arrange the auxiliary rolling wheel on the outer side of the net according to the position of the driving magnetic wheel, so that the auxiliary rolling wheel is adsorbed on the driving magnetic wheel. The net is pressed between the driving magnetic wheel and the auxiliary rolling wheel. The friction between the polymer polyethylene gear and the net makes the cleaning body adhere to the net. Loosen the cable and remove it. Install an image acquisition unit on the cleaning body to collect images around the cleaning device. The preparation work is completed.

[0040] Net cleaning: open the high-pressure water source valves of all the front-drive high-pressure water pipes, and the driving magnetic wheel is driven forward under the reaction of the high-pressure water flow and drives the entire cleaning device forward. During the forward movement, the attached organisms on the surface of the net are crushed by the auxiliary crushing wheel and the driving magnetic wheel, and then the net is cleaned by the high-pressure water flow ejected from the surface of the driving magnetic wheel. At the same time, the driving magnetic wheel drives the eccentric wheel vibration device to vibrate, thereby removing the attached organisms on the net; the forward route of the cleaning device can be up and down along the vertical direction of the net, or left and right along the horizontal direction of the net; during the cleaning process, the surrounding situation can be observed in real time through the image acquisition unit (such as an underwater camera), and the operator controls the front-drive high-pressure water of the three cleaning units respectively according to the acquired images. The switch of the high-pressure water source valve of the front-drive high-pressure water pipe or the rear-drive high-pressure water pipe can control the clothes washing device to move forward, turn or retreat; if left or right turning is required, it can be achieved by adjusting the switch of the high-pressure water source valve of the front-drive high-pressure water pipe of the driving magnetic wheels of the left and right washing units, specifically: open the high-pressure water source valve of the front-drive high-pressure water pipe of the left washing unit, close the high-pressure water source valve of the front-drive high-pressure water pipe of the right washing unit and the high-pressure water source valves of the rear-drive high-pressure water pipes of all washing units, and the whole washing device can turn right; open the high-pressure water source valve of the front-drive high-pressure water pipe of the right washing unit, close the high-pressure water source valve of the front-drive high-pressure water pipe of the left washing unit and the high-pressure water source valves of the rear-drive high-pressure water pipes of all washing units, and the whole washing device can turn left.

[0041] Equipment recovery: After the net is cleaned, drive the entire cleaning device to the net above the water surface, close the high-pressure water source valve, and retrieve the cleaning device.

[0042] In addition, when the net of the cage is an integral net, the cleaning device can be controlled to directly enter other parts of the net, such as the side net and the bottom net. If the net is composed of several nets and a cage frame structure, and there is a cage structure between the nets, it is necessary to use a diver to transfer the cleaning device to other net areas to clean other net areas.

[0043] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and invention concept of the present invention within the scope disclosed by the present invention, which shall fall within the protection scope of the present invention.

Claims

1. A cleaning device for aquaculture cage nets, characterized in that: It includes a cleaning main body and an auxiliary rolling wheel respectively arranged on two sides of the fishing net. The cleaning main body includes a frame and three cleaning units installed on the frame in a "pin" shape. Each cleaning unit includes a driving magnetic wheel, a front driving high-pressure water pipe, a rear driving high-pressure water pipe, and an eccentric wheel vibration device. The driving magnetic wheel is rotatably arranged on the frame and is located on one side of the fishing net. Each driving magnetic wheel magnetically adsorbs an auxiliary rolling wheel. The auxiliary rolling wheel is arranged on the other side of the fishing net. The fishing net is pressed between the auxiliary rolling wheel and the corresponding driving magnetic wheel to roll the attached organisms on the fishing net. The front driving high-pressure water pipe and the rear driving high-pressure water pipe are respectively connected to both ends of the driving magnetic wheel. The driving magnetic wheel is respectively formed with a front driving water flow channel and a rear driving water flow channel that communicate with the front driving high-pressure water pipe and the rear driving high-pressure water pipe and penetrate the outer surface of the driving magnetic wheel. The high-pressure water in the front driving high-pressure water pipe is sprayed onto the surface of the fishing net through the front driving water flow channel to clean the fishing net. At the same time, the driving magnetic wheel is driven to move forward by the reaction force of the high-pressure water flow, or the high-pressure water in the rear driving high-pressure water pipe is sprayed onto the surface of the fishing net through the rear driving water flow channel to clean the fishing net. At the same time, the driving magnetic wheel is driven to move backward by the reaction force of the high-pressure water flow. The eccentric wheel vibration device is connected to the driving magnetic wheel through gear meshing. The driving magnetic wheel drives the eccentric wheel vibration device to vibrate, thereby removing the attached organisms on the fishing net. Among them, the driving magnetic wheel includes a magnetic wheel main shaft, a magnetic wheel main shaft bearing, a magnetic wheel main shaft gear, a magnet cylinder, a high molecular polyethylene gear, a magnetic wheel movable shaft, a movable valve, and an annular baffle. Both ends of the magnetic wheel main shaft are respectively arranged on the frame through the magnetic wheel main shaft bearing. Magnetic wheel main shaft gears are installed beside the magnetic wheel main shaft bearings at both ends of the magnetic wheel main shaft. The magnet cylinder is sleeved outside the magnetic wheel main shaft. The high molecular polyethylene gear is sleeved outside the magnet cylinder. The magnetic wheel main shaft, the magnet cylinder, and the high molecular polyethylene gear form a magnetic wheel main body that can rotate synchronously. Among them, the magnetic wheel main shaft is a hollow tubular structure. Its hollow inner cavity is composed of a first hollow inner cavity and second hollow inner cavities located on both sides of the first hollow inner cavity. The diameter of the first hollow inner cavity is larger than that of the second hollow inner cavity. The magnetic wheel movable shaft is movably installed in the first hollow inner cavity. Its outer diameter matches the diameter of the first hollow inner cavity. And the length of the first hollow inner cavity is greater than the length of the magnetic wheel movable shaft. Both ends of the first hollow inner cavity are communicated with the front driving high-pressure water pipe and the rear driving high-pressure water pipe arranged at both ends of the magnetic wheel main shaft through the second hollow inner cavity. The magnetic wheel movable shaft is a hollow tubular structure. A plurality of first through holes are evenly arranged on its surface along the circumferential direction. The first through holes are communicated with the hollow inner cavity of the magnetic wheel movable shaft. And movable valves are respectively arranged at both ends of its hollow inner cavity. A plurality of annular baffles are evenly distributed on the circumferential surface of its hollow inner cavity. The annular baffles drive the magnetic wheel movable shaft to slide axially in the first hollow inner cavity under the push of the high-pressure water flow.The surface of the magnetic wheel body is evenly provided with a plurality of second through holes and third through holes along the circumferential direction, and the second through holes and the third through holes are alternately arranged along the axial direction of the magnetic wheel body, the outlets of the second through holes and the outlets of the third through holes are respectively located on the two side surfaces of the gear teeth of the polymer polyethylene gear, and the outlets of the second through holes and the third through holes on the polymer polyethylene gear are arranged along the tangent direction of their respective corresponding side surfaces, and the injection directions of the two outlets are opposite, the plurality of second through holes form a front drive water flow channel, and the plurality of third through holes form a rear drive water flow channel, and the reaction force of the high-pressure water flow drives the driving magnetic wheel forward or backward. ; 2. A cleaning device for aquaculture cage nets according to claim 1, characterized in that: A limiting pin for preventing the magnetic wheel movable shaft from rotating is arranged between the magnetic wheel movable shaft and the magnetic wheel main shaft.

3. A cleaning device for aquaculture cage nets according to claim 1, characterized in that: The eccentric wheel vibration device includes an eccentric shaft, an eccentric wheel bearing, an eccentric wheel and an eccentric wheel gear. One end of the eccentric shaft is connected to the frame through the eccentric wheel bearing, and the eccentric wheel is connected to the other end of the eccentric shaft. The eccentric wheel gear is installed on the eccentric shaft and meshes with the external gear of the magnetic wheel main shaft that drives the magnetic wheel.

4. A cleaning device for aquaculture cage nets according to claim 1, characterized in that: The auxiliary rolling wheel is an iron cylinder with the same size as the driving magnetic wheel.

5. A method for cleaning nets of aquaculture cages, characterized in that: The cleaning device according to any one of claims 1 to 4 is used, specifically as follows: Equipment preparation: Place the cleaning body on the inner side of the net, then place the auxiliary rolling wheel on the outer side of the net according to the position of its driving magnetic wheel, so that the auxiliary rolling wheel is adsorbed on the driving magnetic wheel, and the net is pressed between the driving magnetic wheel and the auxiliary rolling wheel. The cleaning body is attached to the net by the friction between the polymer polyethylene gear and the net, and an image acquisition unit for acquiring images around the cleaning device is installed on the cleaning body to complete the preparation work; Net cleaning: open the high-pressure water source valves of all front-drive high-pressure water pipes, drive the magnetic wheel forward under the reaction of the high-pressure water flow and drive the entire cleaning device forward. During the forward process, the attached organisms on the surface of the net are crushed by the auxiliary crushing wheel and the driving magnetic wheel, and then the net is cleaned by the high-pressure water flow ejected from the surface of the driving magnetic wheel. At the same time, the driving magnetic wheel drives the eccentric wheel vibration device to vibrate, thereby removing the attached organisms on the net. At the same time, during the cleaning process, the image acquisition unit collects images around the cleaning device, and controls the switches of the high-pressure water source valves of the front-drive high-pressure water pipes or the rear-drive high-pressure water pipes of the three cleaning units according to the collected images, thereby controlling the forward, reverse or backward movement of the clothes cleaning device; Equipment recovery: After the net is cleaned, drive the entire cleaning device to the net above the water surface, close the high-pressure water source valve, and retrieve the cleaning device.

Images