Device for improving permeability of ricefield eel culture net cage
By designing adjustable mesh frames and shading components, the problem of poor permeability in eel farming cages was solved, oxygen exchange and waste discharge were improved, the eel's growth environment was improved, and efficient cage management was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河南省水产科学研究院
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-01
AI Technical Summary
The existing eel farming cages have poor permeability, which leads to poor gas exchange between the water and the outside environment, making it difficult for oxygen to dissolve fully, affecting the growth of eels, and making it difficult to remove metabolic waste in a timely manner.
A device for improving the permeability of eel farming net cages was designed. Through an adjustable mesh frame structure and shading components, the mesh holes are staggered or overlapped to enhance permeability. The top shading is adjusted by a stepper motor-driven baffle to enhance structural stability.
It improves gas exchange between the water and the outside environment, enhances oxygen dissolution capacity, promotes the excretion of metabolic waste, improves the growth environment of eels, and is simple to operate and effective.
Smart Images

Figure CN224178928U_ABST
Abstract
Description
A device for improving the permeability of eel farming cages Technical Field
[0001] This utility model relates to the field of aquaculture cage technology, and more specifically, to a device for improving the permeability of eel aquaculture cages. Background Technology
[0002] Eel farming cages are facilities used for intensive eel farming. Eels are raised in concentrated cages, which facilitates feeding, observation, and harvesting. Farmers can easily manage the eels in each cage, promptly detect and treat problems such as diseases and lack of oxygen, and improve farming efficiency and yield.
[0003] A search revealed that Chinese patent CN222236247U discloses a net cage for eel farming. This utility model, through the combination of a first storage box, a second storage box, a first drive motor, a rotating shaft, a winding roller, a pull line, a shielding cloth, a second drive motor, and a winding roller, effectively achieves automatic shielding or opening of the top of the eel farming net cage. This avoids the eel farming net cage being open when the light intensity is too high, which would prevent the eels from growing normally and improves the efficiency of eel farming net cages in eel cultivation.
[0004] When using the above-mentioned aquaculture cages, the cages are covered with a tarpaulin. However, this does not easily change the permeability of the cages. Poor permeability will hinder the exchange of gases between the water and the outside world, making it difficult for oxygen in the air to fully dissolve into the water. This will reduce the dissolved oxygen content in the cages, affecting the respiration and growth of the eels. At the same time, metabolic waste generated during the aquaculture process cannot be discharged from the cages with the water flow in a timely manner and will accumulate inside the cages. Summary of the Invention
[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a device for improving the permeability of eel farming net cages, aiming to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for improving the permeability of eel farming net cages, comprising a first horizontal plate and a first mesh frame, wherein the first mesh frame is fixedly sleeved on the outside of the first horizontal plate, a second mesh frame is movably arranged on the outside of the first mesh frame, a second horizontal plate is fixedly connected to the bottom edge of the second mesh frame, a bottom plate is provided at the bottom of the second horizontal plate, and a connecting assembly is provided between the bottom plate and the second horizontal plate, the connecting assembly comprising two first connecting plates, two second connecting plates and locking bolts, the top ends of the two first connecting plates are fixedly connected to the second horizontal plate, and the opposite sides of the two first connecting plates are respectively in contact with the two second connecting plates, the bottom ends of the two second connecting plates are fixedly connected to the bottom plate, and the two second connecting plates are fixed to the two first connecting plates by locking bolts, and multiple insertion holes are provided on the first connecting plate and the two second connecting plates.
[0007] Furthermore, the mesh diameter on the first horizontal plate is the same as the mesh diameter on the second mesh frame.
[0008] Furthermore, two uprights are fixedly connected to the top of the base plate, and the tops of both uprights penetrate the second horizontal plate and are fixedly connected to the first horizontal plate.
[0009] It can be seen that the above technical solution is designed to facilitate the limiting of the second horizontal plate.
[0010] Furthermore, a mounting bracket is provided on the top of the first mesh frame, and two fixing plates are fixedly connected to the bottom edge of the mounting bracket. The bottom of each of the two fixing plates is fixedly provided with an L-shaped plate by bolts, and the bottom ends of the two L-shaped plates are fixedly connected to the first mesh frame.
[0011] As can be seen, in the above technical solution, the fixing between the fixing plate and the L-shaped plate is released by bolts, and the mounting bracket is disassembled and replaced.
[0012] Furthermore, the mounting frame is equipped with a sunshade assembly, which includes a stepper motor, forward and reverse lead screws, multiple sliders, two baffles, and a sliding rod.
[0013] Furthermore, the stepper motor is fixedly mounted on the front side of the mounting bracket, and the output shaft end of the stepper motor is fixedly connected to the positive and negative lead screws. The front and rear ends of the positive and negative lead screws are movably connected to the mounting bracket through bearings. The two sliders are threadedly connected to the positive and negative lead screws, and one side of each of the four sliders is fixedly connected to two baffles.
[0014] It can be seen that the above technical solution is designed to facilitate shading of the top of the first mesh frame.
[0015] Furthermore, the other two sliders are movably mounted on the slide rod, and both ends of the slide rod are fixedly connected to the mounting bracket.
[0016] As can be seen, in the above technical solution, the sliding rod and the other two sliders restrict the rotation of the two baffles.
[0017] The technical effects and advantages of this utility model are as follows:
[0018] 1. This utility model releases the fixation between the second mesh frame and the bottom plate by rotating the locking bolt and moving it away from the first and second connecting plates. The second mesh frame is then moved downwards, causing the mesh holes on the second mesh frame to intersect with those on the first mesh frame. Similarly, the mesh holes on the second mesh frame and those on the first mesh frame are made to overlap, thereby improving permeability. The operation is simple, it is convenient to change the permeability of the aquaculture net cage, and the effect is good.
[0019] 2. This utility model uses two baffles to shade the top of the first mesh frame. The stepper motor drives the positive and negative lead screws to rotate, which in turn drives four sliders to move horizontally, thereby causing the two baffles to move in opposite directions. The distance between the two baffles can be adjusted as needed. Compared with the sunshade cloth, the two baffles are stronger and less prone to deflection. The structure is simple and easy to use. Attached Figure Description
[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0021] Figure 1 is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 is a bottom view of the overall structure of this utility model;
[0023] Figure 3 is a schematic diagram of the assembly structure of the first horizontal plate and the bottom plate of this utility model;
[0024] Figure 4 is a schematic diagram of the assembly structure of the second mesh frame and connecting components of this utility model;
[0025] Figure 5 is a schematic diagram of the assembly structure of the mounting bracket and sunshade component of this utility model.
[0026] In the diagram: 1. First horizontal plate; 2. First mesh frame; 3. Second mesh frame; 4. Upright pole; 5. Base plate; 6. Connecting assembly; 7. L-shaped plate; 8. Mounting bracket; 9. Sunshade assembly; 10. Second horizontal plate; 11. Fixing plate; 601. First connecting plate; 602. Second connecting plate; 603. Locking bolt; 901. Stepper motor; 902. Positive and negative lead screw; 903. Slider; 904. Baffle; 905. Slide rod. Detailed Implementation
[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0028] Referring to Figures 1-5 in the specification, this embodiment of a device for improving the permeability of a net cage for eel farming includes a first horizontal plate 1 and a first mesh frame 2. The first mesh frame 2 is fixedly sleeved on the outside of the first horizontal plate 1. A second mesh frame 3 is movably disposed on the outside of the first mesh frame 2. A second horizontal plate 10 is fixedly connected to the bottom edge of the inside of the second mesh frame 3. A bottom plate 5 is disposed at the bottom of the second horizontal plate 10. A connecting component 6 is disposed between the bottom plate 5 and the second horizontal plate 10. The connecting component 6 includes two first connecting plates 601, two second connecting plates 602, and a locking bolt 603. The top ends of the two first connecting plates 601 are connected to the first horizontal plate 1. Two horizontal plates 10 are fixedly connected, and the two first connecting plates 601 are respectively in contact with two second connecting plates 602 on their opposite sides. The bottom ends of the two second connecting plates 602 are fixedly connected to the base plate 5, and the two second connecting plates 602 and the two first connecting plates 601 are fixed together by locking bolts 603. Multiple insertion holes are provided on the first connecting plate 601 and the two second connecting plates 602. The mesh diameter on the first horizontal plate 1 is the same as the mesh diameter on the second mesh frame 3. Two uprights 4 are fixedly connected to the top of the base plate 5, and the top ends of the two uprights 4 pass through the second horizontal plate 10 and are fixedly connected to the first horizontal plate 1.
[0029] Furthermore, a mounting bracket 8 is provided on the top of the first mesh frame 2. Two fixing plates 11 are fixedly connected to the bottom edge of the inner part of the mounting bracket 8. L-shaped plates 7 are fixedly mounted on the bottom of each of the two fixing plates 11 by bolts, and the bottom ends of the two L-shaped plates 7 are fixedly connected to the first mesh frame 2. A sunshade assembly 9 is provided on the mounting bracket 8. The sunshade assembly 9 includes a stepper motor 901, a forward and reverse lead screw 902, multiple sliders 903, two baffles 904, and a sliding rod 905. 1. It is fixedly installed on the front side of the mounting frame 8, and the output shaft end of the stepper motor 901 is fixedly connected to the positive and negative lead screw 902. The front and rear ends of the positive and negative lead screw 902 are movably connected to the mounting frame 8 through bearings. Two sliders 903 are threadedly connected to the positive and negative lead screw 902, and one side of each of the four sliders 903 is fixedly connected to two baffles 904. The other two sliders 903 are movably sleeved on the slide rod 905, and the front and rear ends of the slide rod 905 are fixedly connected to the mounting frame 8.
[0030] The first mesh frame 2 can be shaded by two baffles 904. When the stepper motor 901 is started, it drives the positive and negative lead screws 902 to rotate. Since two sliders 903 are threaded to the positive and negative lead screws 902, the slider 905 and the other two sliders 903 restrict the rotation of the two baffles 904. Therefore, the positive and negative lead screws 902 can drive the four sliders 903 to move horizontally, thereby driving the two baffles 904 to move in opposite directions. The distance between the two baffles 904 can be adjusted as needed. Compared with the sunshade cloth, the two baffles 904 are stronger and less prone to deflection. The structure is simple and easy to use. The fixing plate 11 and the L-shaped plate 7 can be removed by bolts, and the mounting bracket 8 can be disassembled and replaced.
[0031] The usage method of this embodiment is as follows:
[0032] In use, the eels are raised inside the first horizontal plate 1 and the first mesh frame 2. When it is necessary to raise juvenile eels, the locking bolt 603 is rotated and moved away from the first connecting plate 601 and the second connecting plate 602, thereby releasing the fixation between the two first connecting plates 601 and the two second connecting plates 602, and thus releasing the fixation between the second mesh frame 3 and the bottom plate 5. The second mesh frame 3 is moved downwards, so that the mesh on the second mesh frame 3 and the mesh on the first mesh frame 2 intersect, so that the juvenile eels cannot pass through the first mesh frame 2 and the second mesh frame 3. Similarly, the second connecting plate 602 is inserted into the corresponding hole, so that the second mesh frame 3 is fixed to the bottom plate 5. When the juvenile eels gradually grow, the second mesh frame 3 is moved upwards, so that the mesh on the second mesh frame 3 and the mesh on the first mesh frame 2 overlap, thereby improving the permeability. The operation is simple, it is convenient to change the permeability of the breeding net cage, and the use effect is good.
[0033] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures, nor will they be described here.
[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device for improving the permeability of eel farming net cages, comprising a first horizontal plate (1) and a first mesh frame (2), wherein the first mesh frame (2) is fixedly sleeved on the outside of the first horizontal plate (1), characterized in that: A second mesh frame (3) is movably disposed on the outer side of the first mesh frame (2). A second horizontal plate (10) is fixedly connected to the bottom edge of the inner side of the second mesh frame (3). A bottom plate (5) is disposed at the bottom of the second horizontal plate (10). A connecting component (6) is disposed between the bottom plate (5) and the second horizontal plate (10). The connecting component (6) includes two first connecting plates (601), two second connecting plates (602), and a locking bolt (603). The top of each of the two first connecting plates (601) is fixedly connected to the second horizontal plate (10), and the two first connecting plates (601) are respectively in contact with the two second connecting plates (602) on opposite sides. The bottom of each of the two second connecting plates (602) is fixedly connected to the bottom plate (5), and the two second connecting plates (602) and the two first connecting plates (601) are fixed together by locking bolts (603). Multiple insertion holes are provided on the first connecting plate (601) and the two second connecting plates (602).
2. The device for improving the permeability of eel farming cages according to claim 1, characterized in that: The mesh diameter on the first horizontal plate (1) is the same as the mesh diameter on the second mesh frame (3).
3. The device for improving the permeability of eel farming cages according to claim 1, characterized in that: The top of the base plate (5) is fixedly connected to two uprights (4), and the tops of the two uprights (4) pass through the second horizontal plate (10) and are fixedly connected to the first horizontal plate (1).
4. The device for improving the permeability of eel farming cages according to claim 1, characterized in that: The top of the first mesh frame (2) is provided with a mounting bracket (8). Two fixing plates (11) are fixedly connected at the bottom edge of the inner side of the mounting bracket (8). The bottom of the two fixing plates (11) is fixed with an L-shaped plate (7) by bolts, and the bottom ends of the two L-shaped plates (7) are fixedly connected to the first mesh frame (2).
5. The device for improving the permeability of eel farming cages according to claim 1, characterized in that: The mounting bracket (8) is provided with a sunshade assembly (9), which includes a stepper motor (901), a forward and reverse lead screw (902), multiple sliders (903), two baffles (904) and a slide bar (905).
6. The device for improving the permeability of eel farming cages according to claim 4, characterized in that: The stepper motor (901) is fixedly installed on the front side of the mounting bracket (8), and the output shaft end of the stepper motor (901) is fixedly connected to the positive and negative lead screw (902). The front and rear ends of the positive and negative lead screw (902) are movably connected to the mounting bracket (8) through bearings. Two sliders (903) are threadedly connected to the positive and negative lead screw (902), and one side of each of the four sliders (903) is fixedly connected to two baffles (904).
7. The device for improving the permeability of eel farming cages according to claim 1, characterized in that: The other two sliders (903) are movably sleeved on the slide rod (905), and both the front and rear ends of the slide rod (905) are fixedly connected to the mounting bracket (8).
Citation Information
Patent Citations
Monopterus albus culture net cage
CN222236247U