Displacement device and fish farm

Abstract

The application discloses a replacement device and a breeding ship, and relates to the technical field of replacement devices, which comprises a pipe body, a valve, a filter screen, a cover structure and a control unit, the pipe body is a longitudinal hollow structure, the filter screen is arranged at the two ends of the pipe body, the valve is arranged in the pipe body and located between the two filter screens, the valve is electrically connected with the control unit to realize the communication of the two ends of the pipe body, one end of the pipe body is provided with the cover structure, and a filter screen is arranged between the cover structure and the valve, and the cover structure, the valve and the filter screen are all arranged at intervals; the cover structure comprises a cover plate which is reversibly arranged on the pipe body to be opened or closed under the action of water flow. The seawater automatic flow and replacement of the application can be realized automatically without other energy sources, and the energy consumption is low, so that the high energy consumption problem existing in the seawater flow or seawater replacement in the traditional method is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aquaculture ships, in particular to a replacement device and an aquaculture ship. BACKGROUND

[0002] With the transformation of the fishing industry to high quality, deep sea aquaculture ships and large intelligent aquaculture fish farms are gradually emerging. In the above-mentioned aquaculture environment, the seawater in the aquaculture cabin is relatively closed and independent. In order to ensure the healthy growth of fish, improve the oxygen content of seawater, and effectively manage excrement and feed residues, it is necessary to simulate natural ocean current flow and periodically replace part of the seawater. At present, multiple layers of multiple water jet heads and water inlet column structures are mainly configured inside the aquaculture cabin. The water jet head is installed on the cabin wall at a certain inclination angle and sprays seawater at high pressure to promote the rotation of the seawater in the cabin according to a specific direction and speed. The water inlet column is responsible for continuously providing fresh seawater (extracted from the sea area outside the cabin) for the water jet head, and the excess seawater is discharged outside the cabin through an overflow device. This process needs to be regularly cleaned of excrement and unconsumed feed. Both seawater flow and seawater replacement are heavily dependent on the power provided by the seawater pump, resulting in high energy consumption. SUMMARY

[0003] The technical problem to be solved by the present application is that the existing seawater flow or seawater replacement of the aquaculture cabin is heavily dependent on the power provided by the seawater pump, resulting in high energy consumption.

[0004] In order to solve the above technical problems, the present application provides a replacement device, which comprises a pipe body, a valve, a filter screen, a cover structure and a control unit. The pipe body is a longitudinal hollow structure, two ends of the pipe body are respectively provided with the filter screen, the valve is arranged in the pipe body and located between the two filter screens, the valve is electrically connected with the control unit to realize the communication of the two ends of the pipe body, one end of the pipe body is provided with the cover structure, and one filter screen is arranged between the cover structure and the valve, and the cover structure, the valve and the filter screen are all arranged at intervals. The cover structure comprises a cover plate, the cover plate is reversibly installed on the pipe body to realize opening or closing under the action of water flow.

[0005] Further, the cover structure further comprises a limiting assembly, the limiting assembly is arranged on the inner wall of the pipe body and located between the filter screen and the cover plate, so as to be attached with the cover plate when the cover plate is closed.

[0006] Further, the limiting assembly comprises a limiting ring and a sealing ring, the limiting ring is arranged on the inner wall of the pipe body, and the sealing ring is installed on one side of the limiting ring facing the cover plate.

[0007] Further, the sealing ring is in the shape of a semicircle.

[0008] Further, the cover structure further comprises an ear plate and a rotating shaft, the ear plate is arranged on the inner wall of the pipe body and located on the side of the limiting component away from the filter screen, and the cover plate and the ear plate are connected through the rotating shaft.

[0009] Further, the cover plate comprises a support pipe, the cover plate is a hollow structure to form a partition layer of the cover plate, and the support pipe is located in the partition layer and connected with both sides of the partition layer.

[0010] Further, the buoyancy of the cover plate when it is completely immersed in seawater is 80% to 90% of its own gravity.

[0011] Further, the sealing ring is made of rubber.

[0012] The application further provides a culture ship comprising a ship body, a driving structure and the displacement device as described above, the ship body has a plurality of culture cabins and a transverse cabin, the plurality of culture cabins are arranged at intervals along the length direction of the ship body, and the transverse cabin is arranged between two adjacent culture cabins, the displacement device is arranged in the transverse cabin to connect two adjacent culture cabins, and the culture cabin close to the bow of the ship body is connected with the outside through the displacement device, and the culture cabin close to the stern of the ship body is connected with the outside through the displacement device.

[0013] Further, the displacement device has a plurality of displacement devices, the displacement devices are arranged in the transverse cabin, the bow and the stern, the displacement devices in the bow are arranged one by one corresponding to the displacement devices in the transverse cabin, and the displacement devices in the stern are arranged one by one corresponding to the displacement devices in the transverse cabin.

[0014] The plurality of displacement devices in the transverse cabin are arranged at intervals along the length direction of the transverse cabin, and the plurality of displacement devices are arranged at intervals along the width direction of the transverse cabin.

[0015] Compared with the prior art, the displacement device and the culture ship have the following advantages:

[0016] The cover plate is opened or closed by the action of water flow, and when the water flow is pushed from a specific direction, the cover plate is opened by the action of water flow to allow seawater to enter and exit; when the water flow is reversed or stopped, the cover plate is closed by the action of gravity and seawater to prevent backflow, the automatic seawater flow and displacement of the device do not require other energy sources and can be automatically realized, the energy consumption is low, and the high energy consumption problem in the traditional method is solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view of a culture ship provided by an embodiment of the present application;

[0018] Figure 2 is a sectional view along the A-A direction of the culture ship provided by an embodiment of the present application; Figure 1

[0019] Figure 3 is a sectional view of a displacement device provided by an embodiment of the present application;

[0020] Figure 4 is a side view of the displacement device provided by an embodiment of the present application;

[0021] Figure 5 is a schematic view of an open valve state of the displacement device provided by an embodiment of the present application;

[0022] Figure 6 is a schematic view of a horizontal flow state of the displacement device provided by an embodiment of the present application, in which the arrow indicates the flow direction of water flow;

[0023] Figure 7 is a schematic view of an inclined flow state of the displacement device provided by an embodiment of the present application, in which the arrow indicates the flow direction of water flow;

[0024] Figure 8 is a schematic view of an inclined closed state of the displacement device provided by an embodiment of the present application;

[0025] Figure 9 is a schematic view of a closed valve state of the displacement device provided by an embodiment of the present application;

[0026] In the figure, 1, displacement device; 11, pipe body; 12, valve; 13, filter screen; 14, cover structure; 141, cover plate; 1411, support pipe; 1412, partition layer; 142, limiting assembly; 1421, limiting ring; 1422, sealing ring; 143, ear plate; 144, rotating shaft; 2, ship body; 21, culture cabin; 22, transverse partition cabin; 3, driving structure. DETAILED DESCRIPTION

[0027] The specific embodiments of the present application are described in further detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0028] As Figure 3 ​As shown, the present application provides a culture ship, including a displacement device 1 for connecting the culture cabin 21 or the external environment, which includes a pipe body 11, a valve 12, a filter screen 13, a cover structure 14 and a control unit, the pipe body 11 is a longitudinal hollow structure for guiding the flow of seawater. Its internal space allows water to flow through it and provides installation positions for other components such as valve 12, filter screen 13, etc., the pipe body 11 is provided with filter screen 13 at both ends, which blocks larger particulate matter from entering or leaving the culture cabin 21, preventing these substances from damaging equipment or polluting the environment. At the same time, the filter screen 13 helps to keep the water in the culture cabin 21 clean, ensuring the healthy growth of fish, the valve 12 is arranged in the pipe body 11 and located between the two filter screens 13, the valve 12 is electrically connected with the control unit to accept instructions from the control unit to open or close, realizing the communication of both ends of the pipe body 11, so as to accurately control the inflow and outflow of seawater as needed, reducing unnecessary energy waste, one end of the pipe body 11 is provided with a cover structure 14, and a filter screen 13 is arranged between the cover structure 14 and the valve 12, the cover structure 14, the valve 12 and the filter screen 13 are all arranged at intervals; the cover structure 14 includes a cover plate 141 which is reversibly installed on the pipe body 11 to realize opening or closing with the action of water flow. When the water flow is pushed from a certain direction, the cover plate 141 will open with the action of water flow, allowing seawater to enter and exit; while the water flow is reversed or stopped, the cover plate 141 will close under the action of gravity and seawater, preventing backflow, simplifying the operation process, and also reducing the risk of mechanical failure.

[0029] The cover plate 141 of the present embodiment realizes opening or closing with the action of water flow, when the water flow is pushed from a certain direction, the cover plate 141 will open with the action of water flow, allowing seawater to enter and exit; while the water flow is reversed or stopped, the cover plate 141 will close under the action of gravity and seawater, preventing backflow, the automatic seawater flow and displacement of the device does not require other energy sources, can be automatically realized, consumes less energy, and solves the high energy consumption problem existing in the traditional method of seawater flow or seawater displacement.

[0030] Please refer to Figure 1 and Figure 2, the aquaculture ship further comprises a hull 2 and a driving structure 3, the hull 2 is the main frame of the whole ship, and the driving structure 3 is used to provide power so that the ship can sail on water; the hull 2 has a plurality of aquaculture cabins 21 and transverse compartments 22, the plurality of aquaculture cabins 21 are arranged at intervals along the length direction of the hull 2 and are used to breed aquatic organisms such as fish or other marine organisms. Each aquaculture cabin 21 can be regarded as an independent small-scale aquaculture farm, and the environmental conditions can be adjusted as needed to adapt to different types or growth stages of organisms. In the embodiment, the aquaculture cabins 21 are used to breed the same type of organisms, and a transverse compartment 22 is arranged between every two adjacent aquaculture cabins 21 to separate the aquaculture cabins 21; the transverse compartment 22 is provided with a replacement device 1 to communicate with the adjacent two aquaculture cabins 21, so as to control and manage the flow of water and organisms between different aquaculture cabins 21. Through the replacement device 1, the adjacent two aquaculture cabins 21 can be communicated with each other to allow water exchange or to allow seawater microorganisms and algae to migrate from one cabin to another. The aquaculture cabin 21 located near the bow of the hull 2 is communicated with the outside through the replacement device 1, and the aquaculture cabin 21 located near the stern of the hull 2 is communicated with the outside through the replacement device 1, that is, the aquaculture cabin 21 located near the bow (the head) and the stern (the tail) can be directly communicated with the external water area through the replacement device 1, so that the aquaculture cabin 21 can directly or indirectly obtain fresh seawater from the natural environment and discharge waste water, so as to keep the water quality fresh, which is beneficial to the healthy growth of organisms. The low-concentration excretion and bait residues (which meet the direct discharge standard) in the aquaculture cabin 21 can be automatically discharged in time, the aggregation speed is slow, the frequency and cost of periodic removal are low.

[0031] The embodiment provides a marine aquaculture platform, so that the aquaculturist can carry out aquaculture activities in a relatively closed but controllable environment, while ensuring good water quality management and appropriate isolation between organisms, improving the efficiency and product quality of aquaculture.

[0032] Specifically, when it is needed to make the seawater in the aquaculture cabin 21 flow and replace naturally with the ocean current and the wave and the sailing power of the ship, the control units of all the replacement devices 1 of the whole ship are synchronously remotely started to make all the valves 12 in the open state (as shown in Figure 5 ).

[0033] After all the valves 12 are opened, when the device is in the horizontal state, part of the seawater in the sea area where the ship is located makes all the cover plates 141 of the replacement devices 1 automatically open towards the stern under the impact of the sailing power or the ocean current (as shown in Figure 6As shown), seawater flows sequentially from bow to stern along the replacement device 1, aquaculture tank 21, transverse bulkhead 22, and back to the replacement device 1, achieving automatic flow and replacement of seawater within the aquaculture tank 21. When the ship is in a bow-high-stern-low position due to waves, the replacement device 1 also tilts accordingly (as shown). Figure 7 As shown, under the influence of the ship's propulsion or ocean currents, as well as the gravity of the cover plate 141 and the seawater, a portion of the seawater in the area where the ship is located causes the cover plate 141 of all the replacement devices 1 to automatically open towards the stern. The seawater flows sequentially from bow to stern along the replacement device 1, the aquaculture tank 21, the transverse bulkhead 22, and the replacement device 1, realizing the automatic flow and replacement of seawater in the aquaculture tank 21, and achieving unidirectional flow of seawater in the replacement device 1 and the aquaculture tank 21.

[0034] Subsequently, as the ship is in a stern-high, bow-low position due to the waves (such as... Figure 8 As shown), the replacement device 1 is also tilted. Under the influence of the gravity of some seawater in the sea area where the ship is located and the gravity of the cover plate 141, the cover plates 141 of all replacement devices 1 automatically close towards the bow. The flow and replacement of seawater in the replacement device 1 temporarily stop, and the replacement of seawater in the aquaculture tank 21 also stops temporarily. At the same time, the flow of seawater between the aquaculture tanks 21 also stops temporarily to prevent the seawater in the replacement device 1 and the aquaculture tank 21 from flowing in the opposite direction.

[0035] As the waves act periodically on the ship, all the replacement devices 1 repeat the above actions, and under the action of all the covers 141, the seawater in the aquaculture tank 21 achieves periodic unidirectional flow and replacement.

[0036] Understandably, when the seawater quality, marine environmental conditions (such as severe cold waves, typhoons, giant waves, etc.) in the area where the ship is located, or during special aquaculture stages (feeding and feeding stages, disinfection and sterilization stages, collection of high-concentration excrement and feed residue stages, concentrated harvesting of aquaculture products stages, etc.) do not meet the conditions for automatic replacement, the control units of all replacement devices 1 on the entire ship are simultaneously remotely activated, causing all valves 12 to be in the closed state (e.g., Figure 9 As shown, the flow and replacement of seawater in the replacement device 1 are temporarily stopped, and the replacement of seawater in the aquaculture tank 21 is also temporarily stopped at the same time. At the same time, the flow of seawater between the aquaculture tanks 21 is also temporarily stopped at the same time.

[0037] The embodiment makes full use of ocean current and wave energy to realize the flow and replacement of seawater in the cultivation cabin 21, without the intervention of seawater pump, and can be automatically realized. The comprehensive cultivation cost is low, the replacement speed is fast, the efficiency is high, the oxygen concentration in the cultivation cabin 21 is high, artificial oxygenation is not needed, and the cost is low. In addition, since it is directly connected with the outside sea area and replaced with the flow of seawater, the quality of seawater in the cultivation cabin 21 and the cultivation environment are similar to the actual environmental conditions of the sea area, the taste and quality of the cultivated marine products are similar to those of the wild marine products, the concentration of microorganisms and algae in the cultivation cabin 21 is similar to that of the sea area, marine microorganisms and algae can be fully utilized as natural bait, the bait cost is low, and the cultivation efficiency is high.

[0038] Further, the cover structure 14 further comprises a limiting assembly 142, which is arranged on the inner wall of the pipe body 11 and located between the filter screen 13 and the cover plate 141, so as to be attached to the cover plate 141 when the cover plate 141 is closed.

[0039] The limiting assembly 142 of the embodiment ensures that a good sealing surface can be formed when the cover plate 141 is closed, so as to prevent seawater from leaking from places where it should not flow, so as to maintain the stability of the water quality in the cultivation cabin 21 and prevent the seawater in the cultivation cabin 21 from flowing in the reverse direction across the cabin. In addition, the embodiment utilizes natural tides, waves and other marine power resources to drive the flow of seawater, rather than relying on mechanical pumping, and cooperates with the limiting assembly 142 to make the cover plate 141 accurately return to its preset closed position.

[0040] Further, the limiting assembly 142 comprises a limiting ring 1421 and a sealing ring 1422. The limiting ring 1421 is arranged on the inner wall of the pipe body 11 as a physical barrier for limiting the movement range of the cover plate 141, so as to ensure that it can accurately stop at a preset position in the closed state, which helps to prevent the cover plate 141 from being deviated due to water flow impact or other external force, and ensures the consistency and accuracy of each closing. The sealing ring 1422 is installed on the side of the limiting ring 1421 facing the cover plate 141, i.e. the part directly contacted when the cover plate 141 is closed, to provide an elastic contact surface. When the cover plate 141 is closed and contacted with the limiting ring 1421, the sealing ring 1422 can be compressed and deformed to fill the small gap between them, forming an effective watertight seal. At the same time, it can absorb the impact force when the cover plate 141 is closed, and reduce the direct metal-to-metal friction between the cover plate 141 and the limiting ring 1421, thereby prolonging the service life of the components.

[0041] Further, the sealing ring 1422 is semi-circular in shape, which ensures that the sealing ring 1422 has sufficient contact area with the cover plate 141 and the limiting ring 1421. When the cover plate 141 is closed and in contact with the limiting ring 1421, the semi-circular sealing ring 1422 can uniformly deform inwardly under pressure to form a larger elastic contact area, filling any small gap between the cover plate 141 and the limiting ring 1421, so that the sealing ring 1422 can maintain effective sealing under different pressure conditions, even under high pressure or high flow conditions, to prevent seawater leakage.

[0042] Further, the sealing ring 1422 is made of rubber material, which has excellent elasticity and recovery ability. When compressed, it can deform to fill any small gap and quickly recover to its original shape after the pressure is released, ensuring that the cover plate 141 tightly fits the limiting ring 1421 when closed, effectively preventing seawater leakage and ensuring stable water quality in the cultivation cabin 21.

[0043] For reference Figure 4 The cover structure 14 further includes an ear plate 143 and a rotating shaft 144. The ear plate 143 is arranged on the inner wall of the pipe body 11 and located on the side of the limiting assembly 142 away from the filter screen 13, to ensure that the components do not interfere with each other and can work correctly in cooperation. The cover plate 141 and the ear plate 143 are connected by the rotating shaft 144, so that the cover plate 141 can rotate around the rotating shaft 144 to open or close the cover.

[0044] The present embodiment provides an operable cover mechanism, so that the cover plate 141 can be opened or closed under the action of seawater, while ensuring that it can firmly seal the pipe body 11 when in the closed state, preventing internal substances from leaking or external impurities from entering.

[0045] Further, the cover plate 141 includes a support tube 1411. The cover plate 141 is hollow inside to form a partition 1412 of the cover plate 141. The support tube 1411 is located inside the partition 1412, and the two ends of the support tube 1411 are connected to the two sides of the partition 1412, respectively.

[0046] The support tube 1411 of the present embodiment can increase the overall rigidity of the cover plate 141, preventing deformation under external pressure or force, and ensuring that the distance between the front and rear shell plates of the cover plate 141 (i.e., the two surfaces of the cover plate 141) remains constant and does not change due to external force. Compared with a solid structure, a hollow structure can reduce material usage while ensuring sufficient strength, thereby reducing the overall weight, so that the cover plate 141 can flexibly realize opening and closing actions under the action of its own gravity and water flow impact force.

[0047] Further, when the cover plate 141 is completely immersed in seawater, the buoyancy it receives is 80% to 90% of its own weight. Since the buoyancy almost offsets most of the weight of the cover plate 141, the water flow impact force can more easily push or pull the cover plate 141, so that it can quickly respond to changes in water flow and achieve rapid opening or closing. At the same time, because the buoyancy does not completely offset the weight, the cover plate 141 still has enough "anchoring" effect to prevent frequent misoperation due to slight water flow fluctuations, ensuring that the opening and closing action only occurs under the action of sufficient water flow. In this embodiment, the buoyancy received by the cover plate 141 when it is completely immersed in seawater is designed to be 80% to 90% of its own weight, ensuring that the cover plate 141 can flexibly achieve opening and closing action under the action of its own weight and water flow impact force.

[0048] Further, the displacement device 1 has multiple displacement devices 1, which are arranged in the transverse cabin 22, the bow of the ship, and the stern of the ship. The displacement device 1 located at the bow of the ship is arranged one-to-one with the displacement device 1 located in the transverse cabin 22, and the displacement device 1 located at the stern of the ship is arranged one-to-one with the displacement device 1 located in the transverse cabin 22. The multiple displacement devices 1 located in the transverse cabin 22 are arranged in the length direction of the transverse cabin 22, and the multiple displacement devices 1 are arranged in the width direction of the transverse cabin 22, which optimizes the fluid dynamics performance, ensures uniform distribution of pressure or flow, and improves the efficiency and safety of seawater flow and seawater displacement in the breeding cabin 21. When liquid exchange is performed, resource allocation can be more effectively managed, while ensuring the stability of the breeding cabin 21 under different operating conditions.

[0049] It should be noted that the fish farming ship also has a filtering device arranged in the transverse cabin 22 and arranged in correspondence with the corresponding breeding cabin 21. When high-concentration excrement and feed residues (exceeding the direct discharge standard) in the breeding cabin 21 need to be removed, first, remotely control the control units of all displacement devices 1 on the ship to make all valves 12 in the closed state, and then start the seawater circulating filtering device in the breeding cabin 21 to gradually extract seawater containing excrement and feed residues from the bottom of the breeding cabin 21 to the filtering device for filtration before being discharged to the top of the breeding cabin 21 (garbage generated during the process is collected, stored and properly disposed of in a timely manner), until the concentration of excrement and feed residues in the breeding cabin 21 reaches the direct discharge standard. The control units of all displacement devices 1 can be opened, the valves 12 are opened, and the automatic flow and displacement of seawater in the breeding cabin 21 are restored.

[0050] In summary, the embodiment of the present application provides a replacement device 1 and a breeding ship, the cover plate 141 is opened or closed with the action of water flow, when the water flow is pushed from a certain direction, the cover plate 141 is opened with the action of water flow, allowing seawater to enter and exit; when the water flow is reversed or stopped, the cover plate 141 is closed under the action of gravity and seawater, preventing backflow, the automatic seawater flow and replacement of the device does not require other energy sources, can be automatically realized, consumes less energy, solves the high energy consumption problem existing in the seawater flow or seawater replacement in the traditional method.

[0051] The above only describes the preferred embodiments of the present application, and it should be noted that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A fish farming vessel, characterized in that The application relates to a ship body, a driving structure and a replacement device, wherein the ship body has a plurality of culture cabins and a transverse cabin, the plurality of culture cabins are arranged at intervals along the length direction of the ship body, the transverse cabin is arranged between two adjacent culture cabins, the replacement device is arranged in the transverse cabin and is used for connecting two adjacent culture cabins, the culture cabin near the bow of the ship body is connected with the outside through the replacement device, and the culture cabin near the stern of the ship body is connected with the outside through the replacement device; the replacement device has a plurality of replacement devices which are arranged in the transverse cabin, the bow and the stern, the replacement devices arranged in the bow are arranged in one-to-one correspondence with the replacement devices arranged in the transverse cabin, and the replacement devices arranged in the stern are arranged in one-to-one correspondence with the replacement devices arranged in the transverse cabin; wherein, The plurality of replacement devices arranged in the transverse cabin are arranged at intervals along the length direction of the transverse cabin, and the plurality of replacement devices are arranged at intervals along the width direction of the transverse cabin; The replacement device comprises a pipe body, a valve, a filter screen, a cover structure and a control unit, the pipe body is a long hollow structure, the two ends of the pipe body are respectively provided with the filter screens, the valve is arranged in the pipe body and between the two filter screens, the valve is electrically connected with the control unit so as to realize the connection of the two ends of the pipe body, one end of the pipe body is provided with the cover structure, and one filter screen is arranged between the cover structure and the valve, and the cover structure, the valve and the filter screen are arranged at intervals; the cover structure comprises a cover plate which is reversibly arranged on the pipe body so as to be opened or closed under the action of water flow.

2. The farming vessel according to claim 1, characterized in that The cover structure further comprises a limiting assembly which is arranged on the inner wall of the pipe body and between the filter screen and the cover plate so as to be attached to the cover plate when the cover plate is closed.

3. The farming vessel according to claim 2, characterized in that The limiting assembly comprises a limiting ring arranged on the inner wall of the pipe body and a sealing ring arranged on the side of the limiting ring facing the cover plate.

4. The farming vessel according to claim 3, characterized in that The sealing ring is semicircular.

5. The farming vessel according to claim 2, characterized in that The cover structure further comprises an ear plate arranged on the inner wall of the pipe body and located on the side of the limiting assembly away from the filter screen, and the cover plate and the ear plate are connected through a rotating shaft.

6. The farming vessel according to claim 1, characterized in that The cover plate comprises a support pipe, the inside of the cover plate is a hollow structure so as to form a partition layer of the cover plate, the support pipe is arranged in the partition layer, and the two ends of the support pipe are connected with the two sides of the partition layer respectively.

7. The fish farm boat according to claim 1 or 6, characterized in that When the cover plate is completely immersed in seawater, the buoyancy received by the cover plate is 80%-90% of its own gravity.

8. The farming vessel according to claim 3 or 4, characterized in that The sealing ring is made of rubber.

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