Double funnel-shaped fish farming net cage

Abstract

The utility model provides double funnel shape fish culture net cage, including net cage main part, and the net cage main part includes first cage frame and second cage frame, and the first cage frame includes first metal ring and second metal ring, and the first metal ring passes through many metal poles with second metal ring and is welded, and the adjacent metal pole between is welded with metal net, and the outside diameter of first metal ring is greater than the outside diameter of second metal ring, and first metal ring is buried in the bottom layer, the surface of second metal ring is provided with one inclined downward slot, and the slot is inserted with the plate body, and the installation direction of plate body is towards the inside of first cage frame, and plate body surrounds the second metal ring and is arranged in circumference and constitutes a hollow bowl structure, and second metal ring and bowl structure constitute second cage frame, and second cage frame is conducted with the inside of first cage frame. The utility model discloses two cage frames can be combined, and the entrance of net cage can be optimized, and the entry of large fish is limited, and the fish in first cage frame is protected.

Description

Technical Field

[0001] This utility model relates to the fields of marine biological resource survey, seaweed farms, and fishery resource protection technology, specifically a double funnel-shaped fish farming net cage. Background Technology

[0002] In the field of artificial reefs, to increase fishery production and improve the efficiency of fishery resource enhancement in local sea areas, it is necessary to construct marine ranches and use artificial reefs to protect each stage of the fishery resource's life cycle, thereby improving the survival rate and reducing the mortality rate of fishery resources in the wild, and ultimately increasing fishery production in the region. To achieve the goal of covering the entire life cycle, it is necessary to attract and retain juvenile fish within a certain space to improve their reproductive efficiency. Aquaculture net cages are designed for two purposes: attraction and spawning. However, existing aquaculture net cages cannot adequately provide breeding space for larvae and juveniles and are easily disturbed by predators. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model provides a double funnel-shaped fish farming net cage to solve at least one of the above-mentioned technical problems.

[0004] The technical solution of this utility model is: a double funnel-shaped fish farming net cage, including a net cage body, characterized in that the net cage body includes a first cage frame and a second cage frame, the first cage frame includes a first metal ring and a second metal ring, the first metal ring and the second metal ring are welded together by multiple metal rods, a metal mesh is welded between adjacent metal rods, the outer diameter of the first metal ring is larger than the outer diameter of the second metal ring, and the first metal ring is buried in the bottom layer.

[0005] The surface of the second metal ring has a downward-sloping slot, into which a plate is inserted. The plate is installed facing the inside of the first cage frame, and the plates are arranged circumferentially around the second metal ring to form a hollow bowl-shaped structure. The second metal ring and the bowl-shaped structure form a second cage frame, and the second cage frame is in communication with the inside of the first cage frame.

[0006] This invention optimizes the entrance to the net cage by combining two cage frames, restricting the entry of large fish and protecting the fish inside the first cage frame. Furthermore, the inclined surface of the second cage frame facilitates the flow of nutrients from the seawater into the interior of the first cage frame, promoting better fish reproduction. The metal mesh allows for easy observation of the fish reproduction process inside, enabling timely removal and repositioning of the net cage, thus maintaining a balanced fish population.

[0007] More preferably, the end of the plate is located at one-third of the height of the first cage.

[0008] This ensures that a gap is created between the second cage and the first cage, allowing fish to move freely.

[0009] Further preferably, the board body is a transparent PVC board body, and the board body is fixed to the slot by structural adhesive.

[0010] This allows for observation of the fish inside the first cage from above.

[0011] Preferably, the plate is a concrete slab, and the plate is fixed to the slot with structural adhesive.

[0012] The rough surface of concrete can facilitate the reproduction of algae and provide nutrients for fish.

[0013] Further preferably, the height of the first cage is 45cm, and the diameter of the first metal ring is 120cm.

[0014] It can provide enough space for fish.

[0015] More preferably, the diameter of the lower end opening of the second cage is smaller than the diameter of the second metal ring, and the diameter of the second metal ring is smaller than the diameter of the first metal ring.

[0016] This invention optimizes the different diameters from top to bottom, which can better restrict the activity range of fish and prevent them from being attacked by enemies. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] In the diagram: 1. First metal ring; 2. Second metal ring; 3. Metal rod; 4. Metal mesh; 5. Plate. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Reference Figure 1 As shown, the double-funnel-shaped fish farming net cage includes a net cage body, which includes a first cage frame and a second cage frame. The first cage frame includes a first metal ring 1 and a second metal ring 2. The first metal ring and the second metal ring are welded together by multiple metal rods 3. A metal mesh 4 is welded between adjacent metal rods. The outer diameter of the first metal ring is larger than the outer diameter of the second metal ring. The first metal ring is buried in the substrate layer. A downward-sloping slot is opened on the surface of the second metal ring. A plate 5 is inserted into the slot. The installation direction of the plate is towards the inside of the first cage frame, and the plates are arranged around the second metal ring to form a hollow bowl-shaped structure. The second metal ring and the bowl-shaped structure form the second cage frame. The second cage frame is internally connected to the first cage frame.

[0021] This invention optimizes the entrance to the net cage by combining two cage frames, restricting the entry of large fish and protecting the fish inside the first cage frame. Furthermore, the inclined surface of the second cage frame facilitates the flow of nutrients from the seawater into the interior of the first cage frame, promoting better fish reproduction. The metal mesh allows for easy observation of the fish reproduction process inside, enabling timely removal and repositioning of the net cage, thus maintaining a balanced fish population.

[0022] Further optimized, the end of the plate is located at one-third of the height of the first cage. This ensures a gap between the second and first cages, facilitating fish passage.

[0023] Further optimized, the plate is a transparent PVC plate, and the plate is fixed to the slot with structural adhesive. This allows for observation of the fish inside the first cage from above.

[0024] Further optimization involves using a concrete slab as the plate, which is fixed to the slot with structural adhesive. The rough concrete surface facilitates algae growth and provides nutrients for fish.

[0025] Further optimization involves setting the height of the first cage frame to 45cm and the diameter of the first metal ring to 120cm. This provides sufficient space for the fish.

[0026] Further preferably, the diameter of the opening at the lower end of the second cage frame is smaller than the diameter of the second metal ring, and the diameter of the second metal ring is smaller than the diameter of the first metal ring. This invention optimizes the different diameters from top to bottom, which can better restrict the activity range of fish and prevent them from being attacked by predators.

[0027] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A double-funnel-shaped fish farming net cage, comprising a net cage body, characterized in that, The main body of the cage includes a first cage frame and a second cage frame. The first cage frame includes a first metal ring and a second metal ring. The first metal ring and the second metal ring are welded together by multiple metal rods. A metal mesh is welded between adjacent metal rods. The outer diameter of the first metal ring is larger than the outer diameter of the second metal ring. The first metal ring is buried in the substrate layer. The surface of the second metal ring has a downward-sloping slot, into which a plate is inserted. The plate is installed facing the inside of the first cage frame, and the plates are arranged circumferentially around the second metal ring to form a hollow bowl-shaped structure. The second metal ring and the bowl-shaped structure form a second cage frame, and the second cage frame is in communication with the inside of the first cage frame.

2. The double-funnel-shaped fish farming net cage according to claim 1, characterized in that, The end of the plate is located at one-third of the height of the first cage.

3. The double-funnel-shaped fish farming net cage according to claim 2, characterized in that, The board is a transparent PVC board, and the board is fixed to the slot with structural adhesive.

4. The double-funnel-shaped fish farming net cage according to claim 2, characterized in that, The plate is a concrete slab, and the plate is fixed to the slot with structural adhesive.

5. The double-funnel-shaped fish farming net cage according to claim 1, characterized in that, The height of the first cage is 45cm, and the diameter of the first metal ring is 120cm.

6. The double-funnel-shaped fish farming net cage according to claim 1, characterized in that, The diameter of the lower end opening of the second cage is smaller than the diameter of the second metal ring, and the diameter of the second metal ring is smaller than the diameter of the first metal ring.

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