Lifting and overturning type culture net cage

Abstract

The application provides a lifting and overturning type breeding net cage, which comprises a fishing rack and a net cage arranged on the inner side of the fishing rack, the fishing rack is configured to provide buoyancy support for the net cage; a guide structure is arranged between the net cage and the fishing rack, the net cage is configured to be lifted or rotated in a rotating direction through the guide structure; at least three buoyancy adjustable buoyancy pieces are arranged on the outer side of the net cage, the buoyancy pieces are sequentially and spacedly arranged on the outer periphery of the net cage in the rotating direction, and the included angle between adjacent buoyancy pieces relative to the axis of the rotating direction is not greater than 120 degrees; the buoyancy difference is formed between the buoyancy pieces by adjusting the buoyancy of each buoyancy piece, so as to drive the net cage to move up and down and rotate along the guide structure. The lifting and overturning type breeding net cage has the advantages that fish is bred in the net cage, the fishing rack provides offshore buoyancy support, the buoyancy pieces are combined, the lifting and rotating functions of the net cage are realized, and the operation difficulty of the breeding net cage in the cleaning process is effectively solved, especially the problem that the bottom net is inconvenient to clean.

Description

Technical Field

[0001] This invention relates to the field of marine aquaculture equipment technology, and in particular to a lifting and tilting aquaculture cage that can be used for cleaning, inspection and auxiliary harvesting of deep-sea aquaculture cages. Background Technology

[0002] In aquaculture, net cages, as the core aquaculture carriers, are immersed in seawater for extended periods. The surface of the netting is highly susceptible to fouling organisms such as algae, barnacles, and plankton. If not cleaned promptly, these fouling organisms will not only clog the netting pores, reduce seawater exchange efficiency, and deteriorate the water quality inside the cage, but will also significantly increase the cage's weight, weaken its structural safety margin, and consequently induce diseases, netting damage, and reduce survival rates and economic returns.

[0003] The following problems are commonly found in the cleaning operations of existing floating cages:

[0004] The operation process is complex and the operating cost is high. Cleaning relies on operating vessels and large supporting equipment, which are expensive to purchase and maintain. Cleaning also requires repeated coordination between vessel scheduling, equipment coordination and personnel collaboration. The operation is unstable and the efficiency is difficult to guarantee. Changes in sea conditions such as wind, waves and tides significantly affect the safety and stability of the operation window. The operating vessels and large supporting equipment are difficult to meet the actual needs of large-scale deep-sea aquaculture for high-frequency and high-efficiency cleaning and inspection.

[0005] To address the aforementioned issues, this invention proposes a lifting and tilting aquaculture cage that eliminates the need for dedicated workboats and large supporting equipment, is easy to operate and low in cost, adapts to complex sea conditions, enhances the safety and stability of cleaning operations, achieves efficient and high-frequency cleaning, and ensures the long-term stable operation of nearshore aquaculture. Summary of the Invention

[0006] To address the problem that existing aquaculture net cages are prone to accumulating dirt during long-term underwater use, especially the bottom net cages which are difficult to clean, making it difficult to maintain a stable aquaculture environment, this invention provides a lifting and tilting aquaculture net cage.

[0007] According to one objective of the present invention, a lifting and tilting aquaculture cage is provided, comprising a fish raft and a cage disposed inside the fish raft, wherein the fish raft is configured to provide buoyancy support for the cage;

[0008] A guide structure is provided between the net cage and the fish raft, and the net cage is configured to be raised or lowered or rotated in the direction of rotation via the guide structure.

[0009] At least three adjustable buoyancy components are provided on the outside of the net cage. The buoyancy components are arranged sequentially and spaced apart on the outer periphery of the net cage along the rotation direction. The angle between adjacent buoyancy components and the axis of rotation is no greater than 120 degrees.

[0010] By adjusting the buoyancy of each of the buoyancy components to create a buoyancy difference between them, the net cage is driven to move up, down, and rotate along the guide structure.

[0011] Preferably, the fish raft is provided with a bracket, and the guide structure includes a guide slot located on the inner side of the bracket and arranged in a vertical direction, and a rotating shaft arranged on the side of the net cage corresponding to the axis of rotation direction, the rotating shaft being movably inserted into the guide slot.

[0012] Preferably, the buoyancy component is an airbag, which is connected to the air pump. The air pump is configured to control the inflation and deflation of the airbag to adjust the buoyancy of the airbag.

[0013] Preferably, the airbag is provided with a quick-connect tracheal connector, the tracheal connector is connected to one end of the air guide tube, and the other end of the air guide tube is connected to the air pump.

[0014] Preferably, there are four buoyancy components, which are evenly distributed along the circumference of the net cage, and the angle between adjacent buoyancy components and the axis of rotation is 90 degrees.

[0015] Preferably, the net cage has a cubic structure, and the number of buoyancy components is four. The buoyancy components correspond one-to-one with the four corners of the net cage in the rotation direction, and the axis of rotation is set corresponding to the center of the net cage.

[0016] Preferably, a buoyancy difference is formed by sequentially inflating adjacent buoyancy components in the rotation direction, and the gradual rotation of the cage is driven by the buoyancy difference.

[0017] Preferably, the net cage is raised and lowered as a whole by simultaneously inflating multiple buoyancy components located at the bottom of the net cage to generate uniform buoyancy.

[0018] Preferably, a detachable binding connector is provided between the net cage and the fish raft for fixing the net cage in the aquaculture state; and for releasing the binding in the cleaning state, allowing the net cage to move by the buoyancy difference.

[0019] Preferably, the rotation and lifting movements of the cage are decoupled through group control of buoyancy components, wherein a group of buoyancy components at the bottom is used to control lifting, and a group of buoyancy components on the side is used to control rotation.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. Airbag buoyancy drive replaces mechanical transmission, significantly reducing system complexity and overall cost. Airbags are arranged in a circumferential array along the cage, forming a buoyancy adjustment unit through air pumps and an air guiding system, enabling the cage to be raised, lowered, and tilted in a directional manner. The entire process eliminates the need for large machinery such as winches and cranes, as well as cleaning vessels or underwater robots, reducing equipment investment, maintenance costs, and energy consumption from the source, and significantly lowering the cleaning and maintenance costs of the cages.

[0022] 2. Airbag buoyancy control enhances movement adjustment capabilities, achieving comprehensive and blind-spot-free cleaning coverage. Airbags in different positions can be inflated or deflated independently or in groups, allowing the net cage to rise, fall, and rotate along a predetermined path, ensuring that netting at various depths is detached from the water sequentially, resulting in a more complete cleaning range. The airbag buoyancy changes smoothly, minimizing impact during movement adjustments, reducing the load on the net cage structure, and improving the safety and controllability of the movement adjustment process.

[0023] 3. Balancing the stability of daily aquaculture with the safety of cleaning operations. Under normal aquaculture conditions, the airbags remain deflated or at low buoyancy, and the net cages are secured by ropes around their perimeter. This results in a low center of gravity and strong resistance to wind and waves, maintaining structural stability even in complex sea conditions. In cleaning mode, the buoyancy of different airbags allows for various movements, including overall lifting and lowering, and unilateral flipping. This facilitates cleaning and inspection within a more spacious operating window, reducing the risk of fish stress and escape.

[0024] 4. The guiding structure adopts a separate lifting and rotation function design, improving system reliability and operational flexibility. This lifting and tilting aquaculture cage decouples the lifting and tilting actions, using airbags to perform vertical displacement and directional rotation respectively, ensuring that the two functions do not interfere with each other. The bottom main airbag group controls the overall lifting, while the side auxiliary airbag group is responsible for rotation. The cage is driven to tilt around the central axis by the buoyancy difference, and the tilting angle can be adjusted as needed to meet the operational needs of various scenarios such as net cleaning, fish observation, and harvesting assistance.

[0025] In summary, compared with existing technologies, this lifting and rotating aquaculture cage effectively solves the operational difficulties in cleaning aquaculture cages, especially the inconvenience of cleaning the bottom netting, by raising fish inside the cage and utilizing the buoyancy support provided by the fish raft. The structure is simple, flexible in control, and safe to operate, facilitating efficient cleaning of the netting surface and maintaining a good aquaculture environment.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an overall lifting and tilting aquaculture cage according to the present invention;

[0028] Figure 2This is a schematic diagram of a fish raft in a lifting and tilting aquaculture cage according to the present invention;

[0029] Figure 3 This is a schematic diagram of the normal breeding state of a lifting and tilting aquaculture cage according to the present invention;

[0030] Figure 4-7 This is a schematic diagram of the rotation state of a lifting and tilting aquaculture cage according to the present invention.

[0031] Figure 8 This is a schematic diagram of the rising state of a lifting and tilting aquaculture cage according to the present invention.

[0032] Figure 9 for Figure 3 An enlarged schematic diagram of part A in the middle. Detailed Implementation

[0033] The following description is intended to provide a detailed account of the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0034] In conventional aquaculture, net cages are submerged underwater for extended periods, making it easy for algae, silt, and marine debris to adhere to the netting surface, resulting in significant cleaning difficulties, especially in the bottom area. To address these issues, this invention proposes a lifting and rotating aquaculture net cage. By adjusting the buoyancy of the buoyancy components, the net cage 3 can be raised, lowered, and rotated, facilitating rapid cleaning.

[0035] For details, please refer to Figure 1 A lifting and tilting aquaculture cage, comprising:

[0036] Fish raft 1 and net cage 3 disposed inside the fish raft 1, the fish raft 1 being configured to provide buoyancy support for the net cage 3;

[0037] The net cage 3 is provided with a rotation direction, and a guide structure is provided between the net cage 3 and the fish raft 1. The net cage 3 is configured to be raised or lowered or rotated along the rotation direction through the guide structure.

[0038] At least three buoyancy-adjustable buoyancy components are provided on the outside of the net cage 3. The buoyancy components are arranged sequentially and spaced apart on the outer periphery of the net cage 3 along the rotation direction. The angle between adjacent buoyancy components and the axis of rotation is no greater than 120 degrees.

[0039] By adjusting the buoyancy of each of the buoyancy components to create a buoyancy difference between them, the net cage 3 is driven to move up and down and rotate along the guide structure.

[0040] When the lifting and tilting aquaculture cage is in normal aquaculture condition, each buoyancy component provides equal buoyancy, and the cage 3 and the fish raft 1 remain fixed. When in use, the fixing between the cage 3 and the fish raft 1 is released, and the buoyancy of one of the buoyancy components located underwater is increased. The buoyancy generated by this buoyancy component underwater drives the cage 3 to rotate through the guide structure. When this buoyancy component floats on the water surface, it is temporarily called the upper buoyancy component. The buoyancy component adjacent to the upper buoyancy component in the rotation direction and located below the water surface is temporarily called the lower buoyancy component. The lower buoyancy component and the upper buoyancy component are both located on the same side of the horizontal direction at the center of the rotation direction. By increasing the buoyancy of the lower buoyancy component and decreasing the buoyancy of the upper buoyancy component, the lower buoyancy component continues to push the cage 3 to tilt in the rotation direction, realizing the continuous tilting of the cage 3.

[0041] When it is necessary to raise or lower the net cage 3, the buoyancy of the buoyancy components located at the bottom of the net cage 3 and distributed on both sides of the guide structure in the horizontal direction is increased or decreased. The buoyancy components drive the net cage 3 to rise or fall in the vertical direction through the guide structure.

[0042] During the rotation and lifting of the above-mentioned net cage 3, when the net cage 3 moves to the target position, the net cage 3 can be fixed on the fish raft 1, and the net cage 3 exposed above the water surface can be cleaned.

[0043] like Figure 1 and 2 As shown, the fish raft 1 includes a footboard 11 and a buoy 12. The footboard 11 is fixedly mounted on the buoy 12 to support the operator and enhance the overall stability of the fish raft 1. In this embodiment, both the footboard 11 and the buoy 12 are made of HDPE material. By installing the footboard 11 on the buoy 12 and binding the four sides of the net cage 3 to the edge of the fish raft 1, the net cage 3 can float stably on the sea surface.

[0044] The net cage 3 has a cubic structure, which facilitates smooth water flow and full coverage of cleaning operations. The four sides of the net cage 3 are fixed to the fish raft 1 by binding. The buoyancy components are set at the four corners of the net cage 3, so that the net cage 3 can float stably on the water surface.

[0045] The buoyancy component is an airbag 5. In this embodiment, four airbags 5 are evenly distributed around the perimeter of the net box 3. The four airbags 5 are arranged in a circular array around the perimeter of the net box 3 to drive the lifting and rotation of the net box 3. The rotation direction axis is set corresponding to the center of the net box 3, and the angle between adjacent buoyancy components and the rotation direction axis is 90 degrees.

[0046] The air bladder 5 is equipped with an air pipe connector 7. One end of the air guide pipe 4 is connected to the air pipe connector 7, and the other end of the air guide pipe 4 is connected to an air pump. The air guide pipe 4 is a flexible hose. The air pump is connected to each of the air bladders 5 through the air guide pipe 4 to control the inflation and deflation of the air bladders 5, thereby driving the movement of the net cage 3. The air bladders 5 are fixedly connected to the net cage 3 and are connected to the air pump through the flexible hose to control the lifting and rotation of the net cage 3, realizing the conversion between cleaning and aquaculture states. The air guide pipe 4 is equipped with a quick-plug air pipe connector 7 at its tail end, allowing the operator to quickly switch the air supply state of different air bladders 5 during the rotation of the net cage 3, thereby achieving real-time control of the movement of the net cage 3.

[0047] In this embodiment, the air pump (not shown) is configured as a portable, independent operating module, which is not normally fixed to the fish raft 1. When cleaning operations are performed, the air pump is transported to the site by a workboat and temporarily placed on the footboard 11 or the platform of the bracket 2 of the fish raft 1 for operation. The air pump has its own portable power source (such as a battery or a small generator) or is powered by a cable connected to the workboat.

[0048] The air pump's outlet is connected to a dual-function inflation / deflation valve. By connecting an inflation switch (main air intake control valve) and a pressure relief switch (exhaust / pressure reduction valve), the air pump can independently inflate, deflate, or simultaneously inflate a specific airbag 5 by manually adjusting the opening or closing of the corresponding valve. This mobile design avoids long-term exposure of the air pump to the high humidity and high salinity environment at sea, extending the equipment's service life.

[0049] The air duct 4 is laid along the frame structure of the cage 3 and is rigidly fixed to the frame by clips or straps. During the flipping of the cage 3, the air duct 4 remains relatively stationary with respect to the cage frame, thereby avoiding bending, twisting, and air blockage caused by pipe shaking or uneven stress.

[0050] It should be noted that the air duct 4 is fixed to the cage frame, so there will be no bending of the air duct. During rotation, the cage rotates by inflating or deflating air through different inflation / deflation valves (connected to air ducts at different locations).

[0051] The fish raft 1 is provided with a bracket 2, which supports and connects the fish raft 1 and the net cage 3. The guide structure is provided between the bracket 2 and the net cage 3. The fish raft 1 is provided with bolt holes that cooperate with the bolt group to realize the detachable and fixed connection of the bracket 2. The bracket 2 is fixedly connected to the fish raft 1 by the bolt group. The bracket 2 is provided with a support rod to enhance the stability of the overall structure and its resistance to wind and waves.

[0052] In fish farming, fish are raised in net cages 3, with fish rafts 1 and supports 2 providing buoyancy support for the net cages 3. To ensure stability during the farming process, the net cages 3 are fixed above the fish rafts 1 via supports 2. Farmers can stand on footboards 11 to observe and manage the farming conditions within the net cages 3.

[0053] See Figure 9 The guiding structure includes a guide slot 6 located vertically on the inner side of the bracket 2, and rotating shafts 8 respectively disposed on opposite sides of the net cage 3 corresponding to the axis of rotation. The rotating shafts 8 are disposed in the guide slot 6, which supports and guides the net cage 3, coordinating with the lifting and rotating movements of the net cage 3. Specifically, as shown... Figure 9 As shown in the enlarged view, when rotation is required, the mesh box 3 can rotate smoothly in the direction of rotation within the circular guide slot 6 via the rotating shaft 8. After rotating to a predetermined angle, the mesh box 3 can rise or fall under the guidance of the guide slot 6 via the rotating shaft 8. Through this guiding structure, the mesh box 3 can reliably switch between rotation and vertical movement, thereby ensuring the stability and controllability of the movement adjustment process. Optionally, the guide slot 6 can be replaced with a slide rail.

[0054] like Figure 3 As shown, the net cage 3 is fixedly connected to the bracket 2 on all four sides by ropes, so that the net cage 3 is in a normal aquaculture state. If the net cage 3 needs to be rotated and raised or lowered, the ropes tied to the fish raft 1 should first be untied, and then the movement of the net cage 3 should be adjusted by controlling the air bag 5.

[0055] The working principle of this lifting and tilting aquaculture cage is roughly as follows:

[0056] The device uses an airbag 5 as its power actuator, powered by an air pump. The air pump is connected to the airbag 5 via a switching valve and an air guide pipe 4, enabling control of the inflation and deflation of the airbag 5. By adjusting the operating state of the air pump, the airbag 5 can be inflated or contracted, thereby generating corresponding changes in buoyancy.

[0057] Under the controlled inflation and deflation of the air bladder 5, the lateral rotating shaft of the net cage 3 is driven to move up and down and rotate along the built-in slide rail of the bracket 2. After the net cage 3 rotates or rises to the designated position, it is fixed around the net cage 3 with ropes to ensure its stability during cleaning or aquaculture.

[0058] During cleaning, the air bladders 5 can be inflated individually or in combination as needed to control the lifting and rotating motion of the net cage 3, adjusting it sequentially to the target position, thus facilitating the operator's cleaning of the netting. After cleaning, the air bladders 5 are deflated, and the net cage 3 falls back to its original position under gravity. The net cage 3 is then re-secured with ropes to restore it to its normal aquaculture state.

[0059] In summary, this invention proposes a cleaning mechanism for a net cage 3 that is driven by airbags 5, is liftable, and rotatable. By combining and controlling the buoyancy of multiple sets of airbags 5, the movement of the net cage 3 is adjusted, allowing the netting to detach from the water surface and be directly cleaned. This mechanism can complete the periodic cleaning of deep-sea net cages 3 without the need for workboats or large machinery, significantly improving aquaculture efficiency and ecological safety, and has broad prospects for promotion and application.

[0060] For details on the working principle of this lifting and tilting aquaculture cage, please refer to [link / reference needed]. Figures 3 to 7 In this embodiment, the example of rotating the net cage 3 90° clockwise is used for illustration. To facilitate the description of the rotation and lifting functions of the net cage 3, the four airbags 5 are numbered as Airbag 1 51, Airbag 2 52, Airbag 3 53, and Airbag 4 54. An air pump is connected to the air duct 4, which is fixedly connected to Airbag 2 52, via a flexible hose, thus releasing the fixed state between the net cage 3 and the fish raft 1, thereby enabling the net cage 3 to rotate.

[0061] like Figure 3 As shown, cage 3 is currently in normal aquaculture condition. Inflation of air bladder 52 is performed using an air pump, as... Figure 4 As shown. After the airbag 2 (52) inflates, it generates buoyancy, causing the net cage 3 to rotate along the slide rail to the desired position. Figure 5 The location shown.

[0062] like Figure 5 As shown, when the net cage 3 rotates to this position, airbag 2 52 gradually detaches from the water surface. The switching valve is adjusted to deflate it, restoring airbag 2 52 to its initial state before inflation, i.e., the buoyancy of airbag 2 52 disappears. Then, the connection between the airbag and the air pump is disconnected via the quick-connect air hose connector 7, awaiting the next stage of operation of airbag 2 52. Simultaneously, the air pump is connected to the air guide pipe 4, which is fixedly connected to airbag 3 53, via a flexible hose, and airbag 3 53 is inflated. Figure 6 As shown. At this time, under the new buoyancy, net cage 3 continues to rotate along the slide rail until it reaches the desired position. Figure 7 The location shown.

[0063] like Figure 7 As shown, net cage 3 has successfully rotated 90°. Aquaculture workers can use a high-pressure water gun to clean the netting that has just emerged from the water. By repeating this process, most of the netting surface of net cage 3 can be effectively cleaned. After cleaning, net cage 3 can be rotated back into place. Figure 3 The fish was moved to its original position and secured to raft 1 by binding, restoring it to its normal aquaculture state.

[0064] like Figure 8 and 9 As shown, by Figure 3To begin normal aquaculture, untie the ropes securing net cage 3 to fish raft 1. Then, simultaneously inflate bottom air bladders 52 and 53 via an air pump connected to air pipe 4. This raises net cage 3, allowing for further cleaning of blind spots missed during rotation. In practice, if there's a discrepancy in the inflation rate of the air bladders 5 on both sides, the operator can manually adjust to ensure balanced lifting and successful cleaning of net cage 3. After completion, disconnect the air pump from air pipe 4. At this point, bottom air bladders 52 and 53 are no longer activated, and net cage 3 descends to its designated position under its own weight. Simultaneously, secure net cage 3 to fish raft 1 with ropes, restoring net cage 3 to its normal aquaculture state.

[0065] The entire cleaning process does not require the use of specialized workboats or hoisting equipment, and the cost of cleaning a single container can be significantly reduced compared to existing methods.

[0066] In summary, this lifting and tilting aquaculture cage includes a bracket fixed to the fish raft and a cage that can be lifted, lowered, and rotated within the bracket's sliding rails. Multiple airbags arranged circumferentially around the cage are connected to an air pump via air pipes, forming an independently or groupably controllable buoyancy drive unit. This allows the cage to float, descend, and rotate 360 ​​degrees. The bracket is tied to the cage's perimeter under normal aquaculture conditions for positioning. During cleaning, the order of inflation and deflation of the different airbags is controlled to lift and rotate the cage along the sliding rails, lifting the netting to be cleaned off the water surface for thorough rinsing with high-pressure water or other cleaning tools. Compared to traditional cleaning methods relying on workboats and mechanical lifting equipment, this invention uses airbag buoyancy instead of rigid mechanical transmission, resulting in a simpler structure, more flexible control, and the ability to adjust cage movement without large specialized equipment. This significantly reduces equipment investment and maintenance costs, simplifies netting cleaning, facilitates netting safety inspections, and improves aquaculture safety.

[0067] This lifting and tilting aquaculture cage allows for flexible lifting and rotation via a control unit or manual adjustment of the air pump's inflation volume. This enables operators to perform cleaning operations safely, significantly improving operational flexibility and efficiency. The overall structure consists of several detachable and easily processed components, facilitating installation and maintenance, and reducing manufacturing costs. It possesses high practical value and promising prospects for widespread adoption.

[0068] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A lifting and tilting aquaculture cage, characterized in that, Includes a fish raft (1) and a net cage (3) disposed inside the fish raft (1), the fish raft (1) being configured to provide buoyancy support for the net cage (3); A guide structure is provided between the net cage (3) and the fish raft (1), and the net cage (3) is configured to be raised or lowered or rotated in the direction of rotation through the guide structure; At least three buoyancy adjustable buoyancy components are provided on the outside of the net cage (3). The buoyancy components are arranged sequentially and spaced apart on the outer periphery of the net cage (3) along the rotation direction. The angle between adjacent buoyancy components and the axis of the rotation direction is not greater than 120 degrees. By adjusting the buoyancy of each of the buoyancy components to create a buoyancy difference between the buoyancy components, the net cage (3) is driven to move up and down and rotate along the guide structure; The fish raft (1) is provided with a bracket (2), and the guide structure includes a guide slot (6) located on the inner side of the bracket (2) and a rotating shaft (8) located on the side of the net cage (3) corresponding to the axis of rotation. The rotating shaft (8) is movably inserted into the guide slot (6). The number of buoyancy components is four, and each buoyancy component is evenly distributed along the circumference of the net box (3). The angle between adjacent buoyancy components and the axis of rotation is 90 degrees. The net cage (3) is a cubic structure, and there are four buoyancy components. The buoyancy components and the four corners of the net cage (3) correspond one-to-one in the rotation direction, and the rotation direction axis is set at the center of the net cage (3). A buoyancy difference is formed by sequentially inflating the adjacent buoyancy components in the rotation direction, and the gradual rotation of the net cage (3) is driven by the buoyancy difference; By simultaneously inflating multiple buoyancy components located at the bottom of the net cage (3), a uniform buoyancy is generated to drive the net cage (3) to rise and fall as a whole.

2. The lifting and tilting aquaculture cage according to claim 1, characterized in that, The buoyancy component is an airbag (5), which is connected to an air pump. The air pump is configured to control the inflation and deflation of the airbag (5) to adjust the buoyancy of the airbag (5).

3. A lifting and tilting aquaculture cage according to claim 2, characterized in that, The airbag (5) is provided with a quick-plug air pipe connector (7), which is connected to one end of the air pipe (4) and the other end of the air pipe (4) is connected to the air pump.

4. A lifting and tilting aquaculture cage according to claim 1, characterized in that, A detachable binding connector is also provided between the net cage (3) and the fish raft (1) for fixing the net cage (3) in the aquaculture state; and for releasing the binding in the cleaning state, allowing the net cage (3) to move by the buoyancy difference.

5. A lifting and tilting aquaculture cage according to claim 1, characterized in that, The rotation and lifting motion of the cage (3) are decoupled by the group control of the buoyancy components, wherein a group of buoyancy components at the bottom is used to control the lifting, and a group of buoyancy components on the side is used to control the rotation.

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