Adjustable deep sea super large water body pe net cage
By nesting ring-shaped structures within deep-sea aquaculture cages and using counterweights and connecting ropes, the problems of cage deformation and damage were solved, thus expanding the aquaculture space for large yellow croaker and improving its stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN XIAWEI OCEAN RANCH CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-06-05
AI Technical Summary
The diameter of existing deep-sea aquaculture cages for large yellow croaker is limited, resulting in limited aquaculture space. The netting is prone to sagging and friction damage to the seabed, and individual cages are easily deformed or destroyed, affecting the aquaculture results.
The adjustable deep-sea ultra-large water body PE cage is adopted. By nesting multiple ring bodies and connecting bodies in the cage frame structure, combined with the design of counterweights and connecting ropes, it is ensured that the netting will maintain horizontal expansion under the action of wind and waves, avoiding sagging and friction.
It improves the stability and wave resistance of the net cage structure, reduces netting damage, ensures the farming effect of large yellow croaker, and increases the farming space.
Smart Images
Figure CN224320070U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of deep-sea aquaculture technology, specifically an adjustable deep-sea ultra-large water body PE net cage. Background Technology
[0002] Large yellow croaker is a unique mid-to-lower-level migratory economic fish species found along the southeastern coast of my country. my country began researching artificial breeding and aquaculture techniques for large yellow croaker in 1985 and achieved industrialization of aquaculture in 2000. In recent years, my country has vigorously promoted the development of deep-sea aquaculture, putting gravity-type deep-sea cages, engineered enclosures, truss cages, and aquaculture vessels into use for the cultivation of high-quality large yellow croaker. Compared to other equipment, gravity-type PE deep-sea cages have the widest applicability, the best economic benefits, and the strongest replicability. However, the diameter of most existing large yellow croaker deep-sea aquaculture cages is limited to around 30 meters, which restricts the activity space for large yellow croaker and makes it difficult to improve the quality and survival rate of the fish. As the cages and nets increase in size, the nets are prone to sagging during deep-sea aquaculture, rubbing against the waterbed and causing damage. Simultaneously, the increased area of individual cages makes them more susceptible to deformation and even destruction. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide an adjustable deep-sea ultra-large water body PE cage to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] An adjustable deep-sea PE cage for ultra-large water bodies includes a cage frame structure and a net installed on the cage frame structure. The cage frame structure includes a first ring body, a second ring body, a third ring body, and connecting bodies, all composed of PE floating pipes and treads laid on the PE floating pipes. The first, second, and third ring bodies are nested sequentially, with their diameters decreasing sequentially. Two or more connecting bodies are respectively connected between the first and second ring bodies and between the second and third ring bodies, and the two or more connecting bodies are staggered. When underwater, the net body is cylindrical. The upper edge of the net body corresponding to the cylinder is connected to the first ring body. A first counterweight is connected to the lower part of the first ring body corresponding to the PE pipe. A second counterweight is connected to the edge of the lower bottom surface of the net body corresponding to the cylinder. A third counterweight is connected to the center of the lower bottom surface of the net body corresponding to the cylinder. Both the second and third ring bodies are connected to connecting ropes, and the lower ends of the connecting ropes are connected to the lower bottom surface of the net body corresponding to the cylinder.
[0006] Preferably, there are multiple first counterweights, and the multiple first counterweights are evenly spaced along the lower part of the PE pipe corresponding to the first annular body.
[0007] Preferably, there are multiple second counterweights, and the multiple second counterweights are evenly spaced along the edge of the cylindrical bottom surface of the mesh; the weight of the first counterweight is greater than the weight of the second counterweight, and the weight of the second counterweight is greater than the weight of the third counterweight.
[0008] Preferably, the second counterweight is connected to the edge of the corresponding cylindrical bottom surface of the mesh using a slip knot.
[0009] Preferably, both the second and third annular bodies are provided with a rope winding device, and the upper end of the connecting rope is connected to the rope winding device.
[0010] Preferably, there are multiple connecting ropes, and the multiple connecting ropes are evenly spaced along the circumference of the second ring body and / or the multiple connecting ropes are evenly spaced along the circumference of the third ring body.
[0011] Preferably, the upper edge of the corresponding cylindrical part of the mesh is connected to the first annular body via a detachable structure.
[0012] Preferably, the upper edge of the cylindrical mesh has a preset distance from the PE float tube of the first annular body.
[0013] Preferably, the connecting rope is connected to the second and / or third annular body via a detachable structure.
[0014] The beneficial effects of this utility model are:
[0015] This utility model provides an adjustable, ultra-large deep-sea PE net cage. Two correspondingly scaled-down net cage float structures are embedded inside the ultra-large net cage. These structures are relatively independent yet interconnected to increase the structural strength of the net cage. Connecting ropes are added to the embedded net cages for suspension to prevent the net from sagging indefinitely. Simultaneously, counterweights are added below the net to prevent it from rolling upwards under the influence of wind and waves, thus minimizing its impact on the fish's living space. In other words, with the proper arrangement of the counterweights and connecting ropes, the counterweights exert downward gravity, while the connecting ropes generate upward tension. This allows the entire net to maintain a horizontally expanded state as much as possible even under the influence of wind and waves, avoiding significant sagging in the middle of the net. This effectively reduces the risk of friction between the net and the seabed, ensuring the success of large yellow croaker farming. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of an adjustable deep-sea ultra-large water body PE net cage of this utility model at one angle;
[0017] Figure 2 yes Figure 1 Top view;
[0018] Figure 3 This is a three-dimensional structural diagram of the adjustable deep-sea ultra-large water body PE net cage of this utility model from another angle;
[0019] Figure 4 yes Figure 3 The main view;
[0020] Figure 5 This is a schematic diagram of the mesh portion of the adjustable deep-sea ultra-large water body PE net cage of this utility model;
[0021] Explanation of icon numbers:
[0022] 1. First ring body; 2. Second ring body; 3. Third ring body; 4. Connecting body; 5. Netting; 6. Second counterweight; 7. Third counterweight; 8. Connecting rope. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0024] See Figures 1 to 5 The present invention provides an adjustable deep-sea ultra-large water body PE cage, comprising a cage frame structure and a net installed on the cage frame structure; the cage frame structure includes a first ring body, a second ring body, a third ring body, and connecting bodies, each composed of PE floating pipes and treads laid on the PE floating pipes. The first ring body, the second ring body, and the third ring body are nested sequentially, and the diameters of the first ring body, the second ring body, and the third ring body decrease sequentially. Two or more connecting bodies are respectively connected between the first ring body and the second ring body and between the second ring body. Two or more connecting bodies are staggered between the main body and the third annular body; the net is cylindrical when underwater, the upper edge of the net corresponding to the cylinder is connected to the first annular body, the first annular body is connected to the lower part of the PE pipe with a first counterweight, the net is connected to the edge of the lower bottom surface of the cylinder with a second counterweight, the net is connected to the center of the lower bottom surface of the cylinder with a third counterweight, and both the second and third annular bodies are connected to connecting ropes, the lower end of which is connected to the lower bottom surface of the net corresponding to the cylinder.
[0025] The beneficial effects of this utility model are:
[0026] This utility model provides an adjustable, ultra-large deep-sea PE net cage. Two correspondingly scaled-down net cage float structures are embedded inside the ultra-large net cage. These structures are relatively independent yet interconnected to increase the structural strength of the net cage. Connecting ropes are added to the embedded net cages for suspension to prevent the net from sagging indefinitely. Simultaneously, counterweights are added below the net to prevent it from rolling upwards under the influence of wind and waves, thus minimizing its impact on the fish's living space. In other words, with the proper arrangement of the counterweights and connecting ropes, the counterweights exert downward gravity, while the connecting ropes generate upward tension. This allows the entire net to maintain a horizontally expanded state as much as possible even under the influence of wind and waves, avoiding significant sagging in the middle of the net. This effectively reduces the risk of friction between the net and the seabed, ensuring the success of large yellow croaker farming.
[0027] Preferably, there are multiple first counterweights, and the multiple first counterweights are evenly spaced along the lower part of the PE pipe corresponding to the first annular body.
[0028] As can be seen from the above description, the setting of the first counterweight can improve the stability of the overall structure.
[0029] Preferably, there are multiple second counterweights, and the multiple second counterweights are evenly spaced along the edge of the cylindrical bottom surface of the mesh; the weight of the first counterweight is greater than the weight of the second counterweight, and the weight of the second counterweight is greater than the weight of the third counterweight.
[0030] As described above, setting multiple second counterweights at even intervals along the lower edge of the net can balance the overall force. The weight of the first counterweight is greater than that of the second counterweight, and the weight of the second counterweight is greater than that of the third counterweight. The configuration is based on the actual weight ratio to ensure overall force balance. At the same time, together with the connecting rope, the net is less likely to be deformed by water flow underwater.
[0031] Preferably, the second counterweight is connected to the edge of the corresponding cylindrical bottom surface of the mesh using a slip knot.
[0032] As described above, the second counterweight is connected to the edge of the cylindrical bottom surface of the net by a slip knot. During the net-hauling process, the second counterweight can be pulled up one by one independently, thereby reducing the weight of the net and making it easier to haul in the net.
[0033] Preferably, both the second and third annular bodies are provided with a rope winding device, and the upper end of the connecting rope is connected to the rope winding device.
[0034] As described above, by setting up a rope-reeling device, when it is necessary to retrieve the net, the connecting rope can be lifted by simply using the rope-reeling device, thereby lifting the net and facilitating the harvesting of aquatic organisms inside the net.
[0035] Preferably, there are multiple connecting ropes, and the multiple connecting ropes are evenly spaced along the circumference of the second ring body and / or the multiple connecting ropes are evenly spaced along the circumference of the third ring body.
[0036] As described above, the connecting ropes, according to their specific distribution, can make the inside of the net cylindrical, maximizing the lateral expansion of the internal space, which is beneficial for aquaculture in very large bodies of water.
[0037] Preferably, the upper edge of the corresponding cylindrical part of the mesh is connected to the first annular body via a detachable structure.
[0038] As described above, the detachable structure facilitates assembly and disassembly, and makes replacement easy in case of damage.
[0039] Preferably, the upper edge of the cylindrical mesh has a preset distance from the PE float tube of the first annular body.
[0040] As can be seen from the above description, this prevents the mesh from rubbing against the PE floating pipe, thus reducing the risk of damage to the mesh.
[0041] Preferably, the connecting rope is connected to the second and / or third annular body via a detachable structure.
[0042] As described above, the detachable structure facilitates assembly and disassembly, and makes net retrieval easier when needed.
[0043] Example 1
[0044] like Figures 1 to 5 As shown, the adjustable deep-sea ultra-large water body PE net cage provided by this utility model is used for large yellow croaker farming, and can also be used for farming other species. Its specific structure includes a net cage frame structure and a net 5 installed on the net cage frame structure. The net cage frame structure includes a first annular body 1, a second annular body 2, a third annular body 3, and a connecting body 4, all composed of PE floats and footboards laid on the PE floats. The PE floats are PE pipes with a diameter of 40-50 cm. The diameter of the first annular body is 100 meters, meaning the corresponding diameter of the net underwater is slightly less than 100 meters, reaching approximately 95 meters, with a depth of up to 10 meters, allowing the farming water volume to reach approximately 70,880 cubic meters, forming an ultra-large water body. The diameter of the net is slightly smaller than the diameter of the first annular body, meaning there is a preset distance between the upper edge of the cylindrical net and the PE float of the first annular body. This prevents the net from rubbing against the PE float, reducing net damage.
[0045] The first ring body 1, the second ring body 2, and the third ring body 3 are nested sequentially, with their diameters decreasing sequentially. The distance between the first and second ring bodies is equal to the distance between the second and third ring bodies. Specifically, the first, second, and third ring bodies are all circular and concentrically arranged. Two or more connecting bodies 4 are respectively connected between the first and second ring bodies and between the second and third ring bodies, and these connecting bodies are staggered. Each ring body is equipped with a fence, allowing farmers or anglers to walk on the ring bodies and move around, facilitating feeding or fishing at different locations. The connecting bodies serve to connect adjacent ring bodies, forming a unified structure that improves resistance to wind and waves, while also allowing farmers or anglers to move to any position on the ring bodies.
[0046] When the net 5 is underwater, it is cylindrical. The upper edge of the net 5 corresponding to the cylinder is connected to the first annular body. The first annular body 1 is connected to the lower part of the PE pipe with a first counterweight (not shown in the figure). The edge of the bottom surface of the net 5 corresponding to the cylinder is connected to a second counterweight 6. The center of the bottom surface of the net 5 corresponding to the cylinder is connected to a third counterweight 7. Both the second annular body and the third annular body are provided with vertically arranged connecting ropes 8. The lower end of the connecting ropes is connected to the bottom surface of the net 5 corresponding to the cylinder.
[0047] Preferably, there are multiple first counterweights, and these multiple first counterweights are evenly spaced along the lower edge of the PE pipe corresponding to the first annular body, which can improve the stability of the overall structure. There are multiple second counterweights 6, and these multiple second counterweights are evenly spaced along the edge of the lower cylindrical bottom surface of the mesh. The weight of the first counterweight is greater than the weight of the second counterweight, and the weight of the second counterweight 6 is greater than the weight of the third counterweight 7. Setting multiple second counterweights and evenly spaced along the lower edge of the mesh can make the overall force balanced. The weight of the first counterweight is greater than the weight of the second counterweight, and the weight of the second counterweight is greater than the weight of the third counterweight. The configuration is based on the actual weight ratio to make the overall force balanced. At the same time, together with the connecting rope, the mesh is not easily deformed by water flow impact underwater. In this embodiment, the number of second counterweights 6 is configured based on the weight of a single first counterweight and the diameter of the net, as long as it ensures that the sides of the net remain relatively undeformed in the corresponding water area. If it is too heavy, it will hinder the subsequent net hauling. The first and second counterweights can be made of stones, which are readily available.
[0048] In this embodiment, a pulley assembly is also included. The pulley assembly includes a movable pulley with a mounting part. One end of a rope is fixed to the lower part of the PE pipe corresponding to the first annular body, and the other end of the rope passes around the movable pulley and is fixedly connected to a connecting part located on the outer side of the net. The connecting part can be a lifting ring, and the rope is tied to the lifting ring. One end of another rope is also fixed to the lower part of the PE pipe corresponding to the first annular body, and the other end of the other rope is fixedly connected to the mounting part of the movable pulley. The first counterweight is tied to this other rope and is located near the movable pulley. With this structural design, the relative positions of the movable pulley and the first counterweight remain basically unchanged. When it is time to retrieve the net, the end of the rope connected to the first annular body is loosened, and the net can be easily pulled upward by pulling the connecting rope, without being affected by the gravity of the first counterweight. During normal net deployment, the net is stretched by the first counterweight, experiencing not only downward gravity but also lateral pulling force, allowing the net to unfold as horizontally as possible.
[0049] Of course, to facilitate net retrieval, the second counterweight is connected to the edge of the cylindrical bottom surface of the net using a slip knot. This connection structure remains stable under normal conditions (during the aquaculture period). When retrieval is needed, the farmer can open the slip knot by pulling on the end connected to it, thus separating the counterweight from the net. The counterweight then falls to the bottom or is pulled up under its own weight, greatly reducing the weight of the net and solving the problem of difficult net retrieval in large aquaculture bodies. The end connected to the slip knot is located on a ring-shaped body, which can be a first, second, or third ring-shaped body. This slip knot structure can be achieved using existing conventional technology.
[0050] During the net-closing process, the first counterweight blocks can be pulled up one by one independently. The second counterweight block in the middle can be hung on the connecting rope through the opening of the net using a flexible opening method. When closing the net, the second and third counterweight blocks can also be pulled up one by one. In this way, the net only has its own weight, and a crane can be used to close the net and clear the site.
[0051] Preferably, both the second annular body 2 and the third annular body 3 are equipped with a rope-retracting device (not shown in the figure), and the upper end of the connecting rope 8 is connected to the rope-retracting device. With the rope-retracting device, when it is necessary to retrieve the net, the connecting rope can be lifted by simply using the rope-retracting device, thereby lifting the net and facilitating the harvesting of aquatic organisms inside the net. The rope-retracting device can be any existing electric equipment, such as a crane, for quick rope retrieval.
[0052] Preferably, there are multiple connecting ropes 8, and these multiple connecting ropes 8 are evenly spaced along the circumference of the second annular body and / or evenly spaced along the circumference of the third annular body. This specific distribution of the connecting ropes allows the interior of the net to be cylindrical, maximizing the lateral expansion of the internal space, which is beneficial for large-scale aquaculture. In this embodiment, the connecting ropes are primarily made of high-strength and corrosion-resistant materials, suitable for long-term immersion in seawater. If the corrosion resistance is insufficient, an anti-corrosion material can be coated on its surface, provided that it does not negatively impact the cultivation of large yellow croaker.
[0053] Preferably, the upper edge of the corresponding cylindrical part of the mesh is connected to the first annular body via a detachable structure. This detachable structure facilitates assembly and disassembly, and allows for easy replacement in case of damage. This detachable structure can be achieved using existing conventional technology.
[0054] Preferably, the connecting rope is connected to the second and / or third annular body via a detachable structure. This detachable connection facilitates assembly and disassembly, and makes net retrieval easier when needed. This detachable structure can also be achieved using existing conventional technology.
[0055] Of course, different ring-shaped structures can be selected according to the actual usage environment. For example, if the aquaculture water body does not need to be the largest, a second ring-shaped structure can be selected and a net of the appropriate size can be configured. That is, the net is hung on the second ring-shaped structure, and the connecting rope is only connected to the third ring-shaped structure to ensure that the net is not damaged. This allows for more flexible adjustment of the aquaculture area and a stronger ability to adapt to the marine environment.
[0056] This utility model has been described with reference to the above-described embodiments and accompanying drawings. However, the above embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. On the contrary, modifications and equivalent provisions included in the spirit and scope of the claims are all included within the scope of this utility model.
Claims
1. Adjustable deep-sea ultra-large water body PE cage, characterized by: The system includes a cage frame structure and a net installed on the cage frame structure. The cage frame structure includes a first ring body, a second ring body, a third ring body, and connecting bodies, all composed of PE floating pipes and treads laid on the PE floating pipes. The first, second, and third ring bodies are nested sequentially, with their diameters decreasing sequentially. Two or more connecting bodies are connected between the first and second ring bodies and between the second and third ring bodies, and these connecting bodies are arranged in an alternating manner. When underwater, the net body is cylindrical. The upper edge of the net body corresponding to the cylinder is connected to the first ring body. A first counterweight is connected to the lower part of the first ring body corresponding to the PE pipe. A second counterweight is connected to the edge of the lower bottom surface of the net body corresponding to the cylinder. A third counterweight is connected to the center of the lower bottom surface of the net body corresponding to the cylinder. Both the second and third ring bodies are connected to connecting ropes, and the lower ends of the connecting ropes are connected to the lower bottom surface of the net body corresponding to the cylinder.
2. The adjustable deep-sea ultra-large water body PE cage according to claim 1, characterized in that: The number of the first counterweights is multiple, and the multiple first counterweights are evenly spaced along the bottom of the PE pipe corresponding to the first annular body.
3. The adjustable deep-sea ultra-large water body PE cage according to claim 1 or 2, characterized in that: The number of second counterweights is multiple, and the multiple second counterweights are evenly spaced along the edge of the bottom cylindrical surface of the mesh; the weight of the first counterweight is greater than the weight of the second counterweight, and the weight of the second counterweight is greater than the weight of the third counterweight.
4. The adjustable deep-sea ultra-large water body PE cage according to claim 1, characterized in that: The second counterweight is connected to the edge of the cylindrical bottom surface of the mesh using a slip knot.
5. The adjustable deep-sea ultra-large water body PE cage according to claim 1, characterized in that: Both the second and third annular bodies are equipped with rope winding devices, and the upper end of the connecting rope is connected to the rope winding device.
6. The adjustable deep-sea ultra-large water body PE cage according to claim 1, characterized in that: The number of connecting ropes is multiple, and the multiple connecting ropes are evenly spaced along the circumference of the second ring body and / or the multiple connecting ropes are evenly spaced along the circumference of the third ring body.
7. The adjustable deep-sea ultra-large water body PE cage according to claim 1, characterized in that: The upper edge of the corresponding cylindrical mesh is connected to the first annular body via a detachable structure.
8. The adjustable deep-sea ultra-large water body PE cage according to claim 1, characterized in that: The mesh has a preset distance between the upper edge of the corresponding cylindrical part and the PE pipe of the first annular body.
9. The adjustable deep-sea ultra-large water body PE cage according to claim 1, characterized in that: The connecting rope is connected to the second and / or third ring body via a detachable structure.