Composite netting

Abstract

The utility model relates to a composite netting, which comprises a netting skeleton, a first netting and a plurality of second netting, the first netting is connected on the netting skeleton, a plurality of mounting holes are distributed on the first netting, the second netting is in one-to-one correspondence with the mounting holes, and the second netting is connected with the netting skeleton. The second netting is connected with the netting framework and blocks the mounting hole; and the second netting is an anti-fouling netting. After the composite netting is arranged, the mounting holes are formed in the local area of the first netting and blocked by the second netting, so that the positions of the mounting holes are not easily covered by fouling organisms, and after the composite netting is adopted by a net cage, even if a large area of fouling organisms are adsorbed on the first netting, the fouling organisms cannot be easily covered by the mounting holes. In this way, the cleaning frequency of the netting can be lower, even the netting does not need to be cleaned, the management and maintenance cost of the netting is reduced, and the culture benefits are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture cages, in particular to a composite netting. Background Art

[0002] Aquaculture cages are usually used for offshore aquaculture. They generally include a framework and a netting. The netting is connected to the framework and encloses a closed aquaculture cavity. The netting does not block seawater and can also prevent fish from escaping. However, due to intensive aquaculture in cages, feces, bait residues, etc. can cause eutrophication of the aquaculture water area. And there are extremely abundant plankton, shellfish, etc. in seawater, which makes it very easy for seaweeds, barnacles (organisms that are prone to attach to things like netting are usually called fouling organisms), etc. to adsorb on the netting. If the netting is not cleaned for a long time, these attached organisms may cover the mesh holes on the netting, especially for netting with smaller mesh holes. This will cause problems such as poor seawater fluidity inside and outside the cage, poor quality of the aquaculture water body, and insufficient oxygen content. Therefore, it is very necessary to clean the netting. However, cleaning the netting has always been a headache for aquaculture farmers. Although there are some devices specifically for cleaning the netting on the market, due to factors such as the material of the netting and the influence of water flow, the cleaning effect of the netting is not good. In addition, although anti-fouling netting has also appeared on the market, such as copper alloy netting, which can prevent fouling organisms from attaching, its cost is high. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a composite netting, which can ensure the fluidity of water inside and outside the cage, and the cleaning frequency of the netting is low, and it can even be not cleaned.

[0004] To achieve the above purpose, the utility model discloses a composite netting, which includes a netting framework, a first netting, and a plurality of second netting. The first netting is connected to the netting framework. A plurality of installation holes are dispersedly arranged on the first netting. The second netting corresponds to the installation holes one by one. The second netting is connected to the netting framework and blocks the installation holes. The second netting is an anti-fouling netting. After the above settings, by providing installation holes in local areas of the first netting, these installation holes are blocked by the second netting, making it not easy for fouling organisms to cover the positions of the installation holes. After the cage adopts the composite netting of the utility model, even if a large area of fouling organisms adsorbs on the first netting, it can ensure the fluidity of water inside and outside the cage, ensure the water quality safety inside the cage. In this way, the cleaning frequency of the netting can be lower, and it can even be not cleaned, reducing the management and maintenance cost of the netting and improving the aquaculture benefit. In addition, by setting the netting framework, it is convenient to install the first netting and the second netting. The first netting and the second netting can be supported, and the overall strength of the composite netting is higher. After the first netting is locally damaged, it is also convenient to sew up, and the sewing part can be connected to the netting framework to ensure the strength of the sewing part.

[0005] Preferably, both the first netting and the second netting are tied or buckled to the netting framework by ropes. With such an arrangement, the connection between the first netting and the second netting is simpler and more convenient.

[0006] Preferably, it further includes a frame corresponding to the second netting one by one. The edge of the second netting is adapted to the shape of the frame. The second netting is connected in the frame, and the second netting is connected to the netting framework through the frame. By providing the frame, the second netting is not easily pulled by the netting framework, and the second netting is less likely to be damaged.

[0007] Preferably, the netting framework is formed by tying several ropes. The netting framework arranged in this way has a simple structure, is light in weight, has a lower cost, and is more convenient to maintain.

[0008] Preferably, an installation frame adapted to the outer shape of the second netting is provided on the netting framework. Such a social group can ensure the installation stability of the second netting.

[0009] Preferably, the netting framework is composed of several installation frames, and the installation frames are in a regular polygon structure. With such an arrangement, the stability of the netting framework can be ensured, and it is beneficial to the installation of the second netting.

[0010] Preferably, the total area of the second netting is 20% - 80% of the area of the first netting. Such a limitation can ensure the fluidity of the water inside and outside the net cage.

[0011] Preferably, the second netting is a copper netting, a copper alloy netting or a coated netting. The coated netting is a metal netting, a rope netting, etc. coated with an anti-fouling coating.

[0012] Preferably, the first netting is a netting without an anti-fouling function. After such an arrangement, the overall cost of the composite netting can be controlled.

[0013] The utility model has the following beneficial effects:

[0014] The utility model is provided with installation holes in a partial area of the first netting, and these installation holes are blocked by the second netting, so that the positions of the installation holes are not easily covered by fouling organisms. After the net cage adopts the composite netting of the utility model, even if a large area of fouling organisms adheres to the first netting, the fluidity of the water inside and outside the net cage can be ensured, the water quality safety inside the net cage can be ensured, and in this way, the cleaning frequency of the netting can be lower, or even no cleaning is required, reducing the management and maintenance cost of the netting and improving the breeding efficiency. In addition, by arranging a netting framework, the installation of the first netting and the second netting can be facilitated, the first netting and the second netting can be supported, the overall strength of the composite netting is higher, and after a part of the first netting is damaged, it is also convenient to sew up, and the sewn part can be connected to the netting framework to ensure the strength of the sewn part. In addition, in the actual production process, the fluidity of the water inside and outside the net cage can be adjusted by adding new installation holes in the first netting and blocking them with the second netting, and the flexibility of use is strong. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of Embodiment 1.

[0016] Figure 2 It is a schematic diagram after separating the second netting in Embodiment 1.

[0017] Figure 3 It is a schematic diagram of the netting framework in Embodiment 1.

[0018] Figure 4 It is a schematic diagram of the first netting in Embodiment 1.

[0019] Figure 5 It is a schematic diagram of the second netting in Embodiment 1.

[0020] Description of the Main Component Symbols:

[0021] Netting framework 10, mounting frame 11;

[0022] First netting 20, installation holes 21;

[0023] Second netting 30, border 31. Detailed Embodiment

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the following further details the utility model in conjunction with the drawings and embodiments.

[0025] Embodiment 1

[0026] As Figures 1 to 5As shown in the figure, this embodiment discloses a composite netting, which includes a first netting 20, a netting framework 10, and a number of second netting 30. The netting framework 10 is formed by tying ropes. With such a setting, the structure of the netting framework 10 is simple, light in weight, lower in cost, and more convenient to maintain. The netting framework 10 is used to install the first netting 20 and the second netting 30. It has a honeycomb structure to ensure the stability of the netting framework 10 and is also conducive to the installation of the first netting 20 and the second netting 30. Of course, the shapes of the honeycomb holes of the netting framework 10 do not necessarily need to be designed as regular hexagons. They can also be designed as equilateral triangles, squares, or regular pentagons. The netting framework 10 is connected to the framework of the net cage; or, the netting framework 10 is directly used as the framework of the net cage. At this time, the netting framework 10 can be unfolded by cooperating with anchor cables, floating bodies, etc. In this case, the first netting 20 is a netting without an antifouling function, that is, an ordinary netting, and the second netting 30 is a netting with an antifouling biological attachment function, which can be a copper netting, a copper alloy netting, a coated netting, etc. The coated netting is a metal netting, a rope netting, etc. with an antifouling coating on its surface.

[0027] The first netting 20 is connected to the netting framework 10 by tying ropes or snap-fastening, which is convenient for both connection and maintenance. A number of installation holes 21 are distributed dispersedly on the first netting 20. The installation holes 21 can be reserved when the first netting 20 is woven, or obtained by later cutting. Or, the first netting 20 is composed of multiple pieces of netting spliced together, and a certain gap is left between the multiple pieces of netting to form the installation holes 21.

[0028] The second netting 30 corresponds to the installation holes 21 one by one. In this embodiment, a frame 31 corresponding to the second netting 30 one by one is also provided. The frame 31 is made of a rigid material. The edge of the second netting 30 is adapted to the shape of the frame 31. The second netting 30 is connected in the frame 31. The frame 31 can be provided with two pieces. The edge of the second netting 30 is clamped between the two frames 31, and the two frames 31 are bolted together. The frame 31 is tied to the netting framework 10 by ropes, and the second netting 30 blocks the installation holes 21 to prevent farmed fish from escaping through the installation holes 21. The ropes tying the frame 31 can also tie the first netting 20 at the same time to enable the second netting 30 to reliably block the installation holes 21. By providing the frame 31, the second netting 30 is not easily pulled by the netting framework 10, and the second netting 30 is less likely to be damaged. By providing the frame 31, it can better adapt to the second netting 30 made of metal or alloy materials.

[0029] In order to make the installation of the second netting 30 more stable, an installation frame 11 adapted to the outer shape of the second netting 30 is provided on the netting skeleton 10. The installation frame 11 can be regarded as the edge of each honeycomb hole of the honeycomb-shaped netting skeleton 10, that is, the shapes and sizes of the second netting 30 and the frame 31 are adapted to the shape of the honeycomb holes. In this way, each part of the frame 31 can be tied to the netting skeleton 10, so as to realize the stable installation of the second netting 30.

[0030] In order to make the water flow inside and outside the net cage using the composite netting of this embodiment, it is required that the total area of the second netting 30 is 20% to 80% of the area of the first netting 20. The area of the first netting 20 mentioned here does not exclude the area of the installation holes 21.

[0031] Embodiment 2

[0032] The difference between this embodiment and Embodiment 1 is that the frame 31 is not provided in this embodiment. At this time, the second netting 30 is more suitable for ropes.

[0033] As mentioned above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A composite net, characterized in that: It includes a net frame, a first net and several second nets, wherein the first net is connected to the net frame, several installation holes are dispersed on the first net, the second nets correspond to the installation holes one by one, the second nets are connected to the net frame and block the installation holes; the second nets are anti-fouling nets.

2. The composite net garment according to claim 1, characterized in that: The first net and the second net are tied or fastened to the net frame by ropes.

3. The composite net garment according to claim 1, characterized in that: It also includes a frame corresponding to the second net garment one by one, the edge of the second net garment is adapted to the shape of the frame, the second net garment is connected to the frame, and the second net garment is connected to the net garment frame through the frame.

4. The composite net garment according to claim 1, characterized in that: The net clothing frame is formed by binding a plurality of ropes.

5. The composite net garment according to claim 1 or 4, characterized in that: The net clothing frame is provided with a mounting frame which is matched with the shape of the second net clothing.

6. The composite net garment according to claim 5, characterized in that: The net clothing frame is composed of a plurality of installation frames, and the installation frames are in a regular polygonal structure.

7. The composite net garment according to claim 1, characterized in that: The total area of ​​the second net is 20-80% of the area of ​​the first net.

8. The composite net garment according to claim 1, characterized in that: The second mesh is a copper mesh, a copper alloy mesh or a coated mesh.

9. The composite net garment according to claim 1, characterized in that: The first net is a net without anti-fouling function.

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