Net cage for hatching roes and breeding fish fries

Abstract

The utility model relates to the technical field of fry hatching and breeding, in particular to a net cage for hatching roes and breeding fries, which comprises a net frame, an oxygen injection box is arranged at the bottom of the net frame, and the surface of the oxygen injection box is connected with one end of an aerator; a clamping frame is arranged on the outer side of the fastening rod, and the clamping frame is fixedly connected to the side face of the screen frame; the device has the advantages that the net cage is fixed to the edge of a fishpond under the synergistic effect of the clamping frame and the fastening rod, then fry or roes are put into the net frame, the aerator is started, oxygen is injected into the bottom of the net frame from the oxygen injection box, and therefore the situation that due to the fact that the roes sink and accumulate, embryonic development is slow and deformity is caused is prevented; meanwhile, oxygen needed by growth of the fish eggs and the fish fries can be provided, the conditions that the fish eggs are slowly hatched and the fish fries die are avoided, and the breeding cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of hatching and cultivating fry, and specifically relates to a net cage for hatching fish eggs and cultivating fry. Background Art

[0002] The net cage for hatching fish eggs and cultivating fry plays a crucial role in modern aquaculture. Firstly, this kind of net cage provides a safe and stable hatching environment for fish eggs, helping to improve the hatching rate. Secondly, in the initial stage of fry growth, the net cage can effectively isolate natural enemies, reduce the predation risk, and at the same time facilitate the breeding personnel to observe the growth status of juvenile fish and take management measures in a timely manner, thus significantly improving the hatching rate of fish eggs and the survival rate of fry. Using the net cage can also achieve zonal management, carry out refined cultivation of fry according to the needs of different growth stages, and then optimize the resource allocation, improve the overall aquaculture efficiency and economic benefits. In short, the correct application of net cage technology is one of the key factors to ensure the smooth transition of fish from the juvenile stage to the adult stage.

[0003] In the prior art, for the traditional net cage used for hatching fish eggs and cultivating fry, firstly, there is a frame which provides support for the whole structure, and common materials include metal, plastic or wood; secondly, there is a net cloth which is the core part of the net cage, and net cloth with different pore sizes is selected according to different aquaculture needs to adapt to different stages of fish egg hatching or fry growth; there is also a buoyancy device, such as a foam block, to ensure that the net cage can float on the water surface; and a fixing device, such as a rope or an anchor, is used to fix the net cage in a specific position to prevent it from being washed away by the water flow. These components work together to form a microenvironment suitable for the development of the early life stage of fish.

[0004] However, when the traditional net cage for hatching fish eggs and cultivating fry is used, when hatching fish eggs, the fish eggs will sink and accumulate, resulting in slow embryo development, deformity or even death. And when cultivating fry, the fry may die due to oxygen deficiency, reducing the hatching rate of fish eggs and the survival rate of fry, and increasing the aquaculture cost. For this reason, the utility model proposes a net cage for hatching fish eggs and cultivating fry to solve the above-mentioned technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a net cage for hatching fish eggs and cultivating fry to solve the problems put forward in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A net cage for hatching fish eggs and cultivating fry, the net cage for hatching fish eggs and cultivating fry includes: a net frame, an oxygen injection box is arranged at the bottom of the net frame, and the surface of the oxygen injection box is connected to one end of an aerator;

[0007] A fastening rod, a clamping frame is arranged on the outer side of the fastening rod, and the clamping frame is fixedly connected to the side of the net frame.

[0008] Preferably, a number of mesh holes are provided on the side surfaces of the mesh frame. Reinforcing ribs are fixedly installed on the inner walls at the corners of the mesh frame. A support plate is provided at the bottom of the mesh frame, and a buoyancy plate is provided at the top of the mesh frame.

[0009] Preferably, the buoyancy plate is integrally in a square plate structure. Holes are provided on the surface of the buoyancy plate, rubber plugs are provided in the holes, a clamping frame is installed on the side surface of the buoyancy plate, holes are provided on the surface of the clamping frame, and fixed threaded pipes are fixedly connected above the holes.

[0010] Preferably, the oxygen injection tank is integrally in a cuboid structure. A straight notch is provided on the side surface of the oxygen injection tank. A hole is provided on the top of the oxygen injection tank, and a connecting pipe is provided inside. A delivery pipe is clamped in the connecting pipe, and the outer wall diameter of the delivery pipe is the same as the inner wall diameter of the connecting pipe.

[0011] Preferably, one end of the aerator is fixedly connected with an oxygen injection pipe. One end of the oxygen injection pipe is clamped at one end of the delivery pipe. The outer wall diameter of one end of the oxygen injection pipe is the same as the inner wall diameter of the delivery pipe. The surface of the delivery pipe is fixedly connected with the inner wall of the outer pipe, and a fixed threaded pipe is externally screwed on the outer pipe.

[0012] Preferably, the clamping frame is integrally in an "L" - shaped structure. Holes are provided on the surfaces at both ends of the clamping frame, fixed threaded pipes are provided in the holes, and fastening rods are screwed in the fixed threaded pipes.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The net cage for hatching fish eggs and cultivating fry proposed by the present utility model, when in use, can fix the net cage on the edge of the fish pond through the cooperation of the clamping frame and the fastening rod. Then, fry or fish eggs are put into the mesh frame. Next, the aerator is started, and oxygen is injected from the oxygen injection tank to the bottom of the mesh frame, thereby preventing the fish eggs from sinking and accumulating, resulting in slow embryo development and deformity. At the same time, it can also provide the required oxygen for the growth of fish eggs and fry, avoiding the situation of slow fish egg hatching and fry death, and reducing the breeding cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is an exploded view of the overall structure of the oxygen injection device of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the overall structure of the fastening rod of the present utility model;

[0018] Figure 4 is an exploded view of the rubber plug structure of the present utility model.

[0019] In the figure: 1. Frame; 2. Oxygen injection tank; 3. Reinforcing rib; 4. Aerator; 5. Tightening rod; 6. Clamping frame;

[0020] 7. Support plate; 8. Buoyancy plate; 9. Rubber plug; 10. Straight notch; 11. Connecting pipe; 12. Delivery pipe; 13. Oxygen injection pipe; 14. Outer pipe; 15. Fixed threaded pipe. Specific implementation mode

[0021] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0022] Embodiment 1: Please refer to Figures 1-4 , the present utility model provides a technical solution: a net box for hatching fish eggs and cultivating fry, the net box for hatching fish eggs and cultivating fry includes: a frame 1, an oxygen injection tank 2 is arranged at the bottom of the frame 1, and one end of the oxygen injection tank 2 is connected to the surface of the aerator 4;

[0023] A tightening rod 5, a clamping frame 6 is arranged outside the tightening rod 5, and the clamping frame 6 is fixedly connected to the side of the frame 1;

[0024] During use, the net box can be fixed on the edge of the fish pond through the cooperation of the clamping frame 6 and the tightening rod 5, then the fry or fish eggs are put into the frame 1, and then the aerator 4 is started, and oxygen is injected from the oxygen injection tank 2 to the bottom of the frame 1, so as to prevent the fish eggs from sinking and accumulating, resulting in slow embryo development and deformity, and at the same time, it can also provide the required oxygen for the growth of the fish eggs and fry, avoiding the slow hatching of fish eggs and the death of fry, and reducing the breeding cost.

[0025] Embodiment 2: On the basis of Embodiment 1, an oxygen injection box 2 is provided to prevent fish eggs from sinking and fry from lacking oxygen. The oxygen injection box 2 is integrally in a cuboid structure. A straight notch 10 is opened on the side of the oxygen injection box 2. A hole is opened at the top of the oxygen injection box 2, and a connecting pipe 11 is arranged inside. A conveying pipe 12 is clamped in the connecting pipe 11, and the outer wall diameter of the conveying pipe 12 is the same as the inner wall diameter of the connecting pipe 11; Many mesh holes are opened on the sides of the mesh frame 1. Reinforcing ribs 3 are fixedly installed on the inner walls at the corners of the mesh frame 1. A support plate 7 is arranged at the bottom of the mesh frame 1, and a buoyancy plate 8 is arranged at the top of the mesh frame 1; When hatching fish eggs or fry, the oxygen injection box 2 can inject the oxygen generated by the oxygenator 4 into the bottom of the mesh frame 1 through the conveying pipe 12. When injecting oxygen, the fish eggs at the bottom of the mesh frame 1 will spread around under the injection of oxygen, avoiding the sinking and accumulation of fish eggs, and also providing sufficient oxygen. The mesh frame 1 provides a safe and stable environment for the cultivation of fry and the hatching of fish eggs, and is convenient for the staff to view and manage, thereby improving the hatching rate of fish eggs and the survival rate of fry.

[0026] One end of the oxygenator 4 is fixedly connected with an oxygen injection pipe 13. One end of the oxygen injection pipe 13 is clamped into one end of the conveying pipe 12. The outer wall diameter of one end of the oxygen injection pipe 13 is the same as the inner wall diameter of the conveying pipe 12. The surface of the conveying pipe 12 is fixedly connected with the inner wall of the outer pipe 14. A fixed threaded pipe 15 is externally screwed on the outer pipe 14; In order to prevent the conveying pipe 12 from being blocked and affecting the injection of oxygen, the entire oxygen injection device is divided into three sections. The input pipe can be detached from one end of the oxygen injection pipe 13 and the connecting pipe 11, so as to facilitate the daily cleaning of the conveying pipe 12 and avoid blockage affecting the oxygen injection.

[0027] Embodiment 3: On the basis of Embodiment 2, in order to ensure the stability of the device, a clamping frame 6 is provided, which is integrally in an "L" - shaped structure. Holes are opened on the surfaces at both ends of the clamping frame 6, and fixed threaded pipes 15 are arranged in the holes. A fastening rod 5 is internally screwed in the fixed threaded pipe 15; The buoyancy plate 8 is integrally in a square plate - like structure. Holes are opened on the surface of the buoyancy plate 8, and rubber plugs 9 are arranged in the holes. The clamping frame 6 is installed on the side of the buoyancy plate 8. A hole is opened on the surface of the clamping frame 6, and a fixed threaded pipe 15 is fixedly connected above the hole; When fixing the device, the clamping frame 6 is clamped on the border of the breeding pond, and then the fastening rod 5 is rotated, and one end of the fastening rod 5 is abutted against the outer wall of the breeding pond, so as to fix the whole at the current position and prevent the device from being washed away by the water flow. The buoyancy plate 8 can float on the water surface, which is beneficial to the overall stability.

[0028] During actual use, the net box can be fixed on the edge of the fish pond through the cooperation of the clamping frame 6 and the fastening rod 5. Then, the fry or fish eggs are put into the mesh frame 1. Next, the oxygenator 4 is started, and the oxygen is injected from the oxygen injection box 2 to the bottom of the mesh frame 1, thereby preventing the fish eggs from sinking and accumulating, resulting in slow embryo development and deformity. At the same time, it can also provide the required oxygen for the growth of fish eggs and fry, avoiding the situation of slow fish egg hatching and fry death, and reducing the breeding cost.

[0029] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A net cage for hatching fish eggs and cultivating fish fry, characterized in that: The net cage for hatching fish eggs and cultivating fish fry comprises: a net frame (1), an oxygen injection box (2) is arranged at the bottom of the net frame (1), and the surface of the oxygen injection box (2) is connected to one end of an aerator (4); A fastening rod (5) is provided with a clamping frame (6) on the outside of the fastening rod (5), and the clamping frame (6) is fixedly connected to the side of the net frame (1).

2. A net cage for hatching fish eggs and cultivating fish fry according to claim 1, characterized in that: The side of the net frame (1) is provided with a plurality of mesh holes, the inner wall at the corner of the net frame (1) is fixedly provided with reinforcing ribs (3), the bottom of the net frame (1) is provided with a support plate (7), and the top of the net frame (1) is provided with a buoyancy plate (8).

3. A net cage for hatching fish eggs and cultivating fish fry according to claim 2, characterized in that: The buoyancy plate (8) is in the form of a square plate as a whole. A hole is provided on the surface of the buoyancy plate (8). A rubber plug (9) is provided in the hole. A clamping frame (6) is installed on the side of the buoyancy plate (8). A hole is provided on the surface of the clamping frame (6). A fixed threaded pipe (15) is fixedly connected above the hole.

4. A net cage for hatching fish eggs and cultivating fish fry according to claim 1, characterized in that: The oxygen injection box (2) is in the form of a rectangular parallelepiped structure as a whole. A straight slot (10) is provided on the side of the oxygen injection box (2). A hole is provided on the top of the oxygen injection box (2), and a connecting pipe (11) is provided inside the hole. A delivery pipe (12) is inserted into the connecting pipe (11), and the outer wall diameter of the delivery pipe (12) is consistent with the inner wall diameter of the connecting pipe (11).

5. A net cage for hatching fish eggs and cultivating fish fry according to claim 1, characterized in that: One end of the aerator (4) is fixedly connected to an oxygen injection pipe (13), one end of the oxygen injection pipe (13) is inserted into one end of the delivery pipe (12), the outer wall diameter of one end of the oxygen injection pipe (13) is consistent with the inner wall diameter of the delivery pipe (12), the surface of the delivery pipe (12) is fixedly connected to the inner wall of the outer pipe (14), and the outer pipe (14) is screwed with a fixed threaded pipe (15).

6. A net cage for hatching fish eggs and cultivating fish fry according to claim 1, characterized in that: The clamping frame (6) is in an "L"-shaped structure as a whole. Holes are provided on the surfaces of both ends of the clamping frame (6). Fixed threaded tubes (15) are provided in the holes. A tightening rod (5) is threadedly connected to the fixed threaded tube (15).

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