Net cage device for enhancement and releasing marine temporary rearing of Chinese prawns

Abstract

The invention discloses a net cage device for enhancement and releasing marine temporary rearing of Chinese prawns, the structure of the net cage device comprises a net cage, a dismounting plate, a rope and a floating ball, the dismounting plate is arranged at the left end of the net cage, the outer surface of the net cage is connected with one end of the rope, and the floating ball is fixed at the other end of the rope. Placing frames are installed on the two sides of the interior of a clamping frame in a sliding mode, then the clamping frame extends into the net cage through a dismounting and mounting plate, prawns are located in the net cage, flowing of water can be ensured through a breathable net and a filter screen plate, meanwhile, sundries are effectively blocked, and the prawns in the placing frames are prevented from being affected by the sundries; through cooperation of the water inlet and the slow flow pipe, seawater forms a slow flow state when flowing into the net cage from the outer side of the water inlet, normal flowing of the seawater in the net cage is ensured, and meanwhile the situation that prawns in the containing frame are injured or dead and flushed out due to impact of seawater with too large flow and too high flow speed is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of Chinese shrimp farming, and more specifically, to a net cage device used for Chinese shrimp proliferation, release and temporary farming at sea. Background Art

[0002] Chinese shrimp ( Fenneropenaeus chinensis ) belongs to the class Crustacea, order Decapoda, family Penaeidae, genus Penaeus, commonly known as Penaeus chinensis and Oriental shrimp, and is a large migratory shrimp with wide temperature, wide salt and warm water. This shrimp is endemic to the coastal waters of China, with a thin, transparent and smooth carapace, and a blue-green body color for females and a brown-yellow body color for males.

[0003] Enhancement and release refers to the activity of releasing or transplanting artificially bred seedlings or adults into natural waters through artificial means to increase the population, improve the community structure, and improve the ecological environment. Usually, due to sudden changes in the external environment, the seedlings are stimulated and cause stress reactions, resulting in injuries or deaths. If conditions permit, it is best to transport the seedlings to the release waters for temporary care for a period of time before enhancement and release. This can better adapt to the new environment, thereby improving the survival rate, increasing the recapture rate, reducing costs, and improving efficiency.

[0004] However, the existing cage device for increasing and releasing Chinese shrimp has the following shortcomings when in use: the cage device is composed of a mesh plate, and when it is placed in the sea near the coast for increasing and releasing temporary culture, it is easy for debris to enter the cage device, affecting the temporary culture of Chinese shrimp, and when the flow speed of seawater in the cage device is too fast, the shrimp is easily flushed out of the cage device, reducing the effect of centralized temporary culture of Chinese shrimp. Summary of the invention

[0005] The technical solution adopted by the present invention to achieve the technical purpose is: a net cage device for Chinese shrimp proliferation and release for temporary breeding at sea, the structure of which includes a net cage, a disassembly plate, a rope and a buoy, the left end of the net cage is provided with a disassembly plate, and the outer surface of the net cage is connected to one end of the rope, and the other end of the rope is fixed with a buoy, the rope and the buoy are both provided with four, the four buoys are suspended on the sea surface to provide stable traction for the net cage to be placed in the sea, the right side surface of the disassembly plate is also provided with a fixed plate, the disassembly plate and the fixed plate are penetrated with flow grooves, the disassembly plate is penetrated with screws, the disassembly plate is locked to the left end of the net cage by screws, a clamping frame is provided on the right side of the fixed plate, and a limiting strip is fixed to the edge of the clamping frame, the upper and lower ends of the clamping frame are both installed with air permeable nets, and a placing frame is also clamped and installed inside the clamping frame, a filter screen plate is provided around and at the bottom of the placing frame, the clamping frame is in an I-shaped structure, and limiting strips are provided at the upper and lower ends of the edges on both sides, so that the two placing frames can be slidably limited and installed inside the clamping frame.

[0006] As a further improvement of the present invention, a light-transmitting plate is embedded in the side of the cage, and tempered glass is installed on the upper surface of the cage, so that sunlight can penetrate into the interior of the cage.

[0007] As a further improvement of the present invention, an air intake hood is embedded in the upper end surface of the mesh box, an external pipe is connected to the middle end of the top of the air intake hood, and an internal plate is embedded in the air intake hood, an air inlet passes through the bottom of the internal plate, the air inlet is a cavity structure that is wide at the top and narrow at the bottom, and there are twenty-five of them, distributed in a five-by-five matrix.

[0008] As a further improvement of the present invention, a water inlet plate is further provided at the right end of the cage, a water inlet is penetrated inside the water inlet plate, a slow flow pipe is provided at the middle end of the water inlet, and the slow flow pipe is a hollow structure with a narrow outer end and a wide inner end, which can form a slow flow state when seawater flows from the outside of the water inlet to the inside of the cage.

[0009] As a further improvement of the present invention, a positioning frame is provided on the right side of the water inlet plate, and a filter screen is installed on the inner side of the positioning frame, a limiting groove is installed on the top of the filter screen, and a locking plate is installed in the limiting groove, a connecting cross plate is connected to the edge of the locking plate, a sliding block is provided at the end of the locking plate away from the limiting groove, and the sliding block is slidably installed on the right end of the mesh box, a spring rod is provided inside the right end of the mesh box, and the spring rod is passed through the lower end of the sliding block with a clearance fit, three limiting grooves and three locking plates are provided, and the three locking plates are horizontally connected by two connecting cross plates, ensuring that the three locking plates can be synchronously inserted into the three limiting grooves with the cooperation of the three spring rods and the three sliding blocks, thereby limiting the filter screen.

[0010] The beneficial effects of the present invention are: 1. Place the shrimp inside the two placement frames, then slide the placement frames on both sides of the clamping frame, then extend the clamping frame into the net cage through the disassembly plate, and lock the disassembly plate to the left end of the net cage through four screws. At this time, the shrimp is located inside the net cage, which is convenient for placing the shrimp inside the placement frame for temporary breeding and for releasing the shrimp later. The air permeable net and the filter plate can ensure the flow of water quality and effectively block the debris, so as to prevent the shrimp inside the placement frame from being affected by the debris; 2. Through the cooperation of the water inlet and the slow-flow pipe, the seawater forms a slow-flow state when flowing from the outside of the water inlet to the inside of the cage, ensuring the normal flow of seawater inside the cage, while avoiding the situation where the shrimp placed inside the frame is damaged or washed out due to excessive seawater impact. In the process of reproduction, release and temporary rearing, the light-transmitting plate and tempered glass are used to allow sunlight to enter the cage. At the same time, the external oxygen pump is connected through the external pipe, so that oxygen is sprayed downward from the twenty-five air inlets into the cage to provide sufficient oxygen for the shrimp, thereby improving the growth effect of the shrimp. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The present invention is a schematic structural diagram of a net cage device used for the reproduction and release of Chinese shrimp for temporary rearing at sea.

[0012] Figure 2 It is a three-dimensional structural schematic diagram of the placement frame of the present invention.

[0013] Figure 3 It is a half-section schematic diagram of the internal structure of the net cage of the present invention.

[0014] Figure 4 It is a schematic diagram of the three-dimensional structure of the air intake hood of the present invention when viewed from above.

[0015] Figure 5 It is a structural schematic diagram of the positioning frame of the present invention.

[0016] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping plate of the present invention.

[0017] Figure 7 It is a schematic diagram of the half-section three-dimensional structure of the water inlet plate of the present invention.

[0018] In the figure: net box-1, light-transmitting plate-11, air inlet cover-12, external pipe-121, built-in plate-122, air inlet-1221, positioning frame-13, filter screen-131, limiting groove-1311, snap plate-132, sliding block-1321, spring rod-1322, connecting cross plate-1323, disassembly plate-2, fixed plate-21, flow groove-211, screw-22, snap frame-23, limiting strip-231, air permeable net-232, placement frame-24, filter screen plate-241, tempered glass-14, water inlet plate-15, water inlet-151, slow flow pipe-152, rope-3, float-4. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings: Example

[0020] As attached Figure 1 To Attachment Figure 7 As shown: A cage device for the offshore temporary cultivation of Chinese shrimp for enhancement and release, the structure of which comprises a cage 1, a disassembly and assembly plate 2, a rope 3 and a floating ball 4. The disassembly and assembly plate 2 is arranged at the left end of the cage 1, and one end of the rope 3 is connected to the outer surface of the cage 1, and the other end of the rope 3 is fixed with a floating ball 4. A fixing plate 21 is further arranged on the right side surface of the disassembly and assembly plate 2. Flow channels 211 penetrate through the disassembly and assembly plate 2 and the fixing plate 21. A screw 22 penetrates through the disassembly and assembly plate 2, and the disassembly and assembly plate 2 is locked to the left end of the cage 1 through the screw 22. A clamping frame 23 is arranged on the right side of the fixing plate 21, and a limiting strip 231 is fixed on the edge of the clamping frame 23. Ventilation nets 232 are installed at both the upper and lower ends of the clamping frame 23. A placement frame 24 is also clamped and installed inside the clamping frame 23. Filter plates 241 are arranged around and at the bottom of the placement frame 24. A light-transmitting plate 11 is embedded on the side of the cage 1, and a tempered glass 14 is installed on the upper surface of the cage 1, so that sunlight can shine into the inside of the cage 1. An air inlet hood 12 is also embedded on the upper end surface of the cage 1. The middle of the top of the air inlet hood 12 is connected with an external connecting pipe 121, and an internal plate 122 is embedded inside the air inlet hood 12. An air inlet 1221 penetrates through the bottom of the internal plate 122; As a further improvement of the present invention, a water inlet plate 15 is further arranged at the right end of the cage 1. A water inlet 151 penetrates through the water inlet plate 15. A slow flow pipe 152 is arranged in the middle of the water inlet 151. A positioning frame 13 is arranged on the right side of the water inlet plate 15, and a filter net 131 is inserted and installed inside the positioning frame 13. A limiting groove 1311 is installed on the top of the filter net 131, and a clamping plate 132 is clamped and installed inside the limiting groove 1311. A connecting cross plate 1323 is connected to the edge of the clamping plate 132. A sliding block 1321 is arranged at one end of the clamping plate 132 away from the limiting groove 1311, and the sliding block 1321 is slidably installed at the right end of the cage 1. A spring rod 1322 is arranged inside the right end of the cage 1, and the spring rod 1322 is in clearance fit and penetrates through the lower end inside the sliding block 1321; In the present invention, the prawns are placed inside two placement frames 24, and then the placement frames 24 are slidably installed on both sides inside the engaging frame 23, so as to centrally temporarily raise the prawns. Then, the engaging frame 23 is extended into the net cage 1 through the dismounting and assembling plate 2, and the dismounting and assembling plate 2 is locked at the left end of the net cage 1 by four screws 22. At this time, the prawns are located inside the net cage 1. Then, the net cage 1 is placed into the sea, and is suspended on the sea surface by four floating balls 4 and the whole net cage 1 is towed by four ropes 3, and the net cage 1 sinks into the sea to temporarily raise the prawns. In this process, through the cooperation of the water inlet 151 and the slow flow pipe 152, when the sea water flows from the outside of the water inlet 151 into the net cage 1, a slow flow state is formed, ensuring the normal flow of the sea water inside the net cage 1, and at the same time avoiding the situation that the prawns inside the placement frame 24 are damaged and washed out due to excessive impact of the sea water. And during the temporary raising process, through the light-transmitting plate 11 and the toughened glass 14, sunlight can shine into the net cage 1. At the same time, an external oxygen pump is connected through the external connecting pipe 121, so that oxygen is sprayed downward from twenty-five air inlets 1221 into the net cage 1 to provide sufficient oxygen for the prawns and improve the growth effect of the prawns.

[0021] A preferred technical solution is that the engaging frame 23 has an I-shaped structure, and limiting strips 231 are provided at the upper and lower ends of both side edges, so that the two placement frames 24 can be slidably and limit-mounted inside the engaging frame 23, which is convenient for placing the prawns inside the placement frames 24 for temporary raising and for releasing the prawns later. And through the breathable net 232 and the filter plate 241, the flow of water quality can be ensured and sundries can be effectively blocked, avoiding the influence of sundries on the prawns inside the placement frame 24; A preferred technical solution is that the air inlet 1221 has a cavity structure with a wider upper part and a narrower lower part, and there are twenty-five of them, which are distributed in a five-by-five matrix. An external oxygen pump is connected through the external connecting pipe 121, so that oxygen is sprayed downward from twenty-five air inlets 1221 into the net cage 1 to provide sufficient oxygen for the prawns, and the cavity structure with a wider upper part and a narrower lower part of the air inlet 1221 prevents sea water from flowing back into the air inlet cover 12 and the external connecting pipe 121; A preferred technical solution is that the slow flow pipe 152 has a cavity structure with a narrower outer end and a wider inner end, which can make the sea water form a slow flow state when flowing from the outside of the water inlet 151 into the net cage 1, ensuring the normal flow of the sea water inside the net cage 1, and at the same time avoiding the situation that the prawns inside the placement frame 24 are damaged and washed out due to excessive impact of the sea water; In a preferred technical solution, there are three limiting grooves 1311 and three engaging plates 132, and the three engaging plates 132 are horizontally connected by two connecting cross plates 1323, ensuring that the three engaging plates 132 can be synchronously inserted into the three limiting grooves 1311 under the cooperation of the three spring rods 1322 and the three sliding blocks 1321, so as to resist and limit the filter net 131, prevent the filter net 131 from falling off from the inside of the positioning frame 13, make the filter net 131 stably arranged on the right side of the water inlet plate 15, filter the water inlet process of the water inlet plate 15, and prevent sundries in the seawater from entering the net cage 1 and affecting the temporary cultivation effect of the prawns.

[0022] Any technical solution that uses the technical solution of the present invention or is designed by those skilled in the art inspired by the technical solution of the present invention to achieve the above technical effects falls within the protection scope of the present invention.

Claims

1. A net cage device for the reproduction and release of Chinese shrimp for temporary rearing at sea, the structure of which comprises a net cage (1), a disassembly plate (2), a rope (3) and a buoy (4), wherein the left end of the net cage (1) is provided with a disassembly plate (2), and the outer surface of the net cage (1) is connected to one end of the rope (3), and the other end of the rope (3) is fixed with a buoy (4), and the rope (3) and the buoy (4) are both provided with four, and the four buoys (4) are suspended on the sea surface to provide stable traction for the net cage (1) to be placed in the sea, characterized in that: A fixing plate (21) is also provided on the right side surface of the disassembly plate (2). A flow slot (211) is passed through the inside of the disassembly plate (2) and the fixing plate (21). A screw (22) is passed through the inside of the disassembly plate (2). The disassembly plate (2) is locked to the left end of the net box (1) by the screw (22). A snap-fit ​​frame (23) is provided on the right side of the fixing plate (21). A limit strip (231) is fixed to the edge of the snap-fit ​​frame (23). Air permeable nets (232) are installed at the upper and lower ends of the snap-fit ​​frame (23). A placement frame (24) is also snap-fitted and installed inside the snap-fit ​​frame (23). A filter screen plate (241) is provided around and at the bottom of the placement frame (24). The snap-fit ​​frame (23) is in an I-shaped structure. Limit strips (231) are provided at the upper and lower ends of the edges on both sides so that the two placement frames (24) can be slidably limited and installed inside the snap-fit ​​frame (23).

2. A net cage device for the reproduction and release of Chinese shrimp for temporary rearing at sea according to claim 1, characterized in that: The side of the net box (1) is embedded with a light-transmitting plate (11), and the upper surface of the net box (1) is installed with tempered glass (14), so that sunlight can penetrate into the interior of the net box (1).

3. A net cage device for the reproduction and release of Chinese shrimp for temporary rearing at sea according to claim 2, characterized in that: An air intake hood (12) is also embedded in the upper end surface of the net box (1), an external pipe (121) is connected to the middle of the top of the air intake hood (12), and an internal plate (122) is embedded in the air intake hood (12), an air intake port (1221) penetrates the bottom of the internal plate (122), and the air intake port (1221) is in a cavity structure that is wide at the top and narrow at the bottom, and twenty-five of the air intake ports (1221) are arranged in a five-by-five matrix distribution, and are connected to an external oxygen pump via the external pipe (121).

4. A net cage device for the reproduction and release of Chinese shrimp for temporary rearing at sea according to claim 3, characterized in that: A water inlet plate (15) is further provided at the right end of the net cage (1), a water inlet (151) is penetrated inside the water inlet plate (15), a slow-flow pipe (152) is provided at the middle end of the water inlet (151), and the slow-flow pipe (152) is in a hollow structure with a narrow outer end and a wide inner end, so that seawater forms a slow-flow state when flowing from the outside of the water inlet (151) to the inside of the net cage (1).

5. A net cage device for the reproduction and release of Chinese shrimp for temporary rearing at sea according to claim 4, characterized in that: A positioning frame (13) is provided on the right side of the water inlet plate (15), and a filter screen (131) is installed and plugged into the inner side of the positioning frame (13); a limiting groove (1311) is installed on the top of the filter screen (131), and a clamping plate (132) is installed and clamped inside the limiting groove (1311); a connecting transverse plate (1323) is connected to the edge of the clamping plate (132); a sliding block (1321) is provided at one end of the clamping plate (132) away from the limiting groove (1311), and the sliding block (1321) is slidably installed on the right end of the net box (1); a spring rod (1322) is provided inside the right end of the net box (1), and the spring rod (1322) is inserted into the lower end of the sliding block (1321) by means of clearance fit; three limiting grooves (1311) and three clamping plates (132) are provided, and the three clamping plates (132) are connected transversely by two connecting transverse plates (1323).

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