Liftable net cage with rotating net driven by ocean current

Abstract

The utility model relates to a liftable net cage with a rotating net driven by ocean current, which comprises a net cage main body, a netting is arranged on the net cage main body, one side of the net cage main body is connected with a buoy for intercepting floating objects in water through a flexible connecting piece, and the net cage main body is switched between a culture state and an anti-typhoon state through the ascending and descending of the buoy; in a culture state, the buoys are located on the water surface and located on the side edges of the net cage main body, at the moment, the top of the net cage main body is exposed out of the water surface, and the volume of the part, exposed out of the water surface, of the netting is 1 / 8-1 / 4 of the whole netting; in a typhoon-proof state, the net cage main body is immersed under the water surface, and the buoy is positioned below the net cage main body; and the mooring rope is connected with the buoy. The aquaculture net cage is simple in overall structure and free of a driving mechanism, meanwhile, floating objects in water can be effectively intercepted through the floating barrels, and damage to the netting is reduced. The net cage body is connected with the buoy through the flexible sling, and the problem that the net cage body and the buoy are prone to fatigue damage due to rigid connection is solved.

Description

Technical Field

[0001] The utility model relates to the field of seawater aquaculture, and particularly relates to an ocean current-driven rotatable and liftable net cage. Background Art

[0002] In recent years, China's marine aquaculture industry has developed rapidly and has become an important way to develop marine fishery resources. Currently, the location selection of China's marine aquaculture is mainly in sheltered sea areas such as offshore bays. The development space of the industry is severely limited, and it has led to the deterioration of the offshore ecological environment and frequent occurrence of diseases and pests. It is urgent to implement the deep-sea aquaculture strategy to expand the industry development space and quality.

[0003] Aquaculture net cages that are long-term immersed in seawater will attach a large number of marine organisms. These marine organisms will cause fouling of the netting and hinder the water circulation, deteriorating the aquaculture environment. It must be cleaned regularly. Sunning the net to kill marine attachments is an efficient and convenient netting cleaning method. In addition, the deep-sea environment is harsh and complex, and extreme disasters such as typhoons pose a great threat to the safety of the net cage and cultured fish. Sinking the net cage to avoid the sea surface wind and wave load is a feasible method to improve the disaster resistance ability of the net cage.

[0004] For example, an ocean current-driven rotatable and liftable net cage mentioned in patent CN114868690B includes a spherical net cage body, a rotating shaft, two rotating arms, two groups of floating balls and two driving mechanisms. The rotating shaft is inserted into the spherical net cage body in the radial direction, and the ends of both ends of the rotating shaft are arranged outside the spherical net cage body. The shape of the rotating arm is semi-circular, and the two rotating arms are symmetrically arranged outside the spherical net cage body. The two ends of the rotating arm are respectively rotatably connected to the ends of the rotating shaft. The rotating arm rotates around the outer wall of the spherical net cage body with the rotating shaft as the center of rotation through the driving mechanism, and a group of floating balls are connected to the outside of each rotating arm.

[0005] In the above patent, two driving mechanisms are used to drive the rotation of multiple floating balls to realize the rotation of the net cage, and the structure is relatively complex. In addition, the above aquaculture net cages are all equipped with multiple floating bodies. When the net cage is in the floating state, the multiple floating bodies are distributed at the peripheral corners of the net cage on the sea surface, and the distance between adjacent floating bodies is relatively large, which cannot effectively intercept floating objects in the water, making the netting vulnerable to damage. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide an ocean current-driven rotatable and liftable net cage.

[0007] To solve the above technical problem, the technical solution of the utility model is: an ocean current-driven rotatable and liftable net cage, including a net cage main body, on which a netting is provided. The innovation lies in:

[0008] One side of the main cage body is connected with a buoy for intercepting floating objects in water through a flexible connecting piece, and the switching between the aquaculture state and the typhoon prevention state of the main cage body is realized through the lifting of the buoy;

[0009] In the aquaculture state, the buoy is on the water surface and at the side of the main cage body. At this time, the top of the main cage body is exposed above the water surface;

[0010] In the typhoon prevention state, the main cage body is immersed below the water surface, and the buoy is below the main cage body;

[0011] It also includes a mooring rope, and the mooring rope is connected with the buoy.

[0012] Furthermore, the connecting piece includes two flexible slings symmetrically arranged on both length sides of the main cage body and the buoy.

[0013] Furthermore, one end of the sling is fixed on the buoy, and the other end has a buckle. After the buckle passes through the side of the main cage body and enters the main cage body, it is hung on the main cage body. Compared with directly hanging the buckle on the main cage body, the connection stability between the buoy and the main cage body can be effectively improved, and the sling can be prevented from detaching from the main cage body.

[0014] Furthermore, in the aquaculture state, the volume of the netting exposed above the water surface is 1 / 8 - 1 / 4 of the whole netting.

[0015] Furthermore, the total length of the buoy is not less than the length of the main cage body.

[0016] Furthermore, one side of the mooring rope is connected with an anchor point on the seabed, and the other side is divided into two strands and respectively connected with both length sides of the buoy.

[0017] The advantages of the present utility model are as follows:

[0018] 1. The overall structure of this aquaculture cage is simple. There is no need to additionally set up multiple driving mechanisms. The lifting of the aquaculture cage can be realized through the lifting of the side-mounted buoy, so as to realize the switching between the aquaculture state and the typhoon prevention state of the main cage body. Moreover, the length of the buoy is relatively large, which can effectively intercept floating objects in water and reduce the damage to the netting arranged on the main cage body.

[0019] 2. The mooring of this aquaculture cage is realized through the mooring ropes at both ends of the buoy, and finally a single-point mooring is formed. When the aquaculture cage is in the typhoon prevention state, the buoy sinks to drag the main cage body to sink, and the buoy is always below the main cage body, so that the main cage body will not touch the bottom, and the netting can be effectively protected.

[0020] 3. After the buckle of the sling passes through the side of the cage body and then hangs on the top of the cage body, compared with directly hanging the buckle on the top of the cage body, the connection stability between the buoy and the cage body can be effectively improved, and the sling can be prevented from detaching from the cage body.

[0021] 4. When the cage body needs to rotate to dry the net, the flexible connection between the cage body and the buoy - the flexible sling can be used to arbitrarily adjust the connection position between the sling and the cage body. After passing the sling buckle through the side of the cage body and then hanging it on the top of the cage body, under the driving action of the ocean current, the cage body rotates automatically, and the net is hung again until the cage body rotates 1 / 8 - 1 / 4 circle and then continues to dry the net. The power for net rotation in this process is driven by the ocean current, without the need for additional net - rotation power, which is energy - saving, convenient and reliable. Brief Description of the Drawings

[0022] Figure 1 It is a three - dimensional view of the ocean - current - driven net - rotating and liftable cage of the present utility model.

[0023] Figure 2 It is a schematic structural diagram of the ocean - current - driven net - rotating and liftable cage of the present utility model in the aquaculture state.

[0024] Figure 3 It is Diagram 1 of the net - turning and net - drying illustration of the ocean - current - driven net - rotating and liftable cage of the present utility model.

[0025] Figure 4 It is Diagram 2 of the net - turning and net - drying illustration of the ocean - current - driven net - rotating and liftable cage of the present utility model.

[0026] Figure 5 It is Diagram 1 of the typhoon - avoiding illustration of the ocean - current - driven net - rotating and liftable cage of the present utility model.

[0027] Figure 6 It is Diagram 2 of the typhoon - avoiding illustration of the ocean - current - driven net - rotating and liftable cage of the present utility model. Detailed Embodiment

[0028] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the attached drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present utility model as follows.

[0029] As Figure 1-6 shown, an ocean - current - driven net - rotating and liftable cage includes a cage body 1, a buoy 2 and a mooring rope 4, and the cage body 1 has a certain buoyancy in water.

[0030] The direction indicated by the arrow in the figure is the direction of the ocean current.

[0031] The overall shape of the cage main body 1 is cylindrical, and a net is provided thereon. One side of the cage main body 1 is connected with a floating cylinder 2 for intercepting floating objects in the water through a flexible connecting piece, and the lifting of the floating cylinder 2 is used to realize the switching of the cage main body 1 between the aquaculture state and the typhoon prevention state. There is no need to set a driving mechanism for the floating cylinder 2, making the overall structure of this aquaculture cage simple.

[0032] The floating cylinder 2 is a cylindrical barrel structure. An air inlet / outlet and a liquid inlet / outlet are also provided on the floating cylinder 2, and a first valve, a second valve, a third valve and a fourth valve are respectively installed at the air inlet, the air outlet, the liquid inlet and the liquid outlet. The air inlet and outlet of the floating cylinder 2 are realized through the first and second valves, and the water inlet and drainage of the floating cylinder 2 are realized through the third and fourth valves.

[0033] In the aquaculture state, the floating cylinder 2 is on the water surface and is located at the side of the cage main body 1. At this time, the top of the cage main body 1 is exposed above the water surface, and the volume exposed above the water surface is 1 / 8 - 1 / 4 of the whole cage main body 1, and the net drying time is about 2 days.

[0034] In the typhoon prevention state, the cage main body 1 is immersed below the water surface, and the floating cylinder 2 is below the cage main body 1.

[0035] On both sides of the length of the floating cylinder 2, a diversion section can be provided, and the outer diameter of the diversion section decreases from the inside to the outside. By adding the diversion section to divert the floating objects in the water to both sides of the cage body 1, the damage to the net can be further reduced.

[0036] And the total length of the floating cylinder 2 is not less than the length of the cage main body 1, which can effectively intercept floating objects in the water and reduce the damage to the net provided on the cage main body 1.

[0037] The connecting piece 3 includes two flexible slings 3 symmetrically arranged on both sides of the length of the cage main body 1 and the floating cylinder 2, avoiding the problem that the rigid connection between the two is prone to fatigue damage.

[0038] One end of the sling 3 is fixed on the floating cylinder 2, and the other end has a buckle. After the buckle passes through the side of the cage main body 1 and enters the cage main body 1, it is hung on the cage main body 1. Compared with directly hanging the buckle on the cage main body 1, the connection stability between the floating cylinder 2 and the cage main body 1 can be effectively improved, and the sling 3 can be prevented from detaching from the cage main body 1.

[0039] One side of the mooring rope 4 is connected to the anchor point on the seabed, and the other side is divided into two strands and respectively connected to both sides of the length of the floating cylinder 2, finally forming a single point mooring.

[0040] The working principle of this patent:

[0041] Normal aquaculture state: As Figure 1As shown, the buoy 2 intakes air and floats upward, causing the buoy 2 to rise in the water. The cage main body 1 synchronously floats on the sea surface. At this time, 1 / 8 - 1 / 4 of the top part of the cage main body 1 and the netting are exposed above the sea surface, and it is in the farming state at this time.

[0042] Avoiding typhoons: As Figure 5-6 shown, before the typhoon comes, the buoy 2 takes in water and sinks, synchronously dragging the cage main body 1 down until it is completely immersed below the water surface, thus avoiding typhoon damage. Since the cage main body 1 has a certain buoyancy in the water, the buoy 2 is always below the cage main body 1. At this time, it is in the typhoon - proof state, and the cage main body 1 will not touch the bottom, which can effectively protect the netting.

[0043] Hanging the net for sunning: As Figure 3-4 shown, 1 / 8 - 1 / 4 of the netting exposed above the water surface in the farming state is in the state of sunning the net. After sunning the net for 2 days, the aquaculturist unfastens the buckle of the sling 3, then passes it through the side of the cage main body 1 and hangs it on the top of the cage main body 1. Driven by the ocean current, the cage main body 1 automatically rotates 1 / 16 - 1 / 8 of the cage main body 1. Then unfasten the buckle of the sling 3 again, pass it through the side of the cage main body 1 and hang it on the top of the cage main body 1. Driven by the ocean current, the cage main body 1 rotates 1 / 16 - 1 / 8 of the cage main body 1 again. At this time, the cage main body 1 has rotated a total of 1 / 8 - 1 / 4 of a circle, and then sunning the net can continue. The power for rotating the net in this process is driven by the ocean current, without the need for additional power for rotating the net, which is energy - saving, convenient and reliable.

[0044] As described above, it is only a preferred embodiment of the present utility model, and there is no any form of limitation to the present utility model. Although the present utility model has been disclosed as above with the preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art, within the scope of the technical solution of the present utility model, can make some changes or modifications to equivalent embodiments by using the disclosed technical content. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modification, equivalent change and modification made to the above - mentioned embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A current-driven net-rotating and elevating net cage, comprising a net cage body with a net cloth disposed thereon, characterized in that: One side of the cage body is connected to a buoy for intercepting floating objects in the water through a flexible connector, and the cage body is switched between a breeding state and a typhoon protection state by lifting and lowering the buoy; In the breeding state, the buoy is on the water surface and located at the side of the cage body, at which time, the top of the cage body is exposed above the water surface; In the typhoon protection state, the main body of the cage is immersed under the water surface, and the buoy is below the main body of the cage; Also included is a mooring rope connected to the buoy.

2. The current-driven net-rotating and elevating net cage according to claim 1, characterized in that: The connecting member comprises two flexible slings symmetrically arranged on both sides of the length of the cage body and the buoy.

3. The current-driven net-rotating and elevating net cage according to claim 2, characterized in that: One end of the sling is fixed on the buoy, and the other end is provided with a lock buckle, which is inserted into the net box body from the side of the net box body and then hung on the net box body.

4. The current-driven net-rotating and elevating net cage according to claim 1, characterized in that: In the breeding state, the volume of the net exposed above the water surface is 1 / 8-1 / 4 of the entire net.

5. The current-driven net-rotating and elevating net cage according to claim 1, characterized in that: The total length of the buoy is not less than the length of the net cage body.

6. The current-driven net-rotating and elevating net cage according to claim 1, characterized in that: One side of the mooring rope is connected to an anchor point on the seabed, and the other side is divided into two strands and respectively connected to two sides of the length of the buoy.

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