Device and method for artificial spawning site

By designing an artificial spawning ground device with adjustable water depth, the problem of water depth fixation in the prior art is solved, the survival rate of fish eggs is improved, and the operation process is simplified through auxiliary components, achieving efficient fish reproduction.

CN119422983AActive Publication Date: 2025-02-14PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI

Patent Information

Application Number
CN202411944765.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-02-14
Estimated Expiration
2044-12-27

AI Technical Summary

Technical Problem

The water depth of existing artificial spawning grounds is mostly fixed, which cannot meet the suitable water depth temperature for different species of fish, making it difficult to provide a suitable environment quickly and conveniently when different fish breed, reducing the survival rate of fish eggs.

Method used

An artificial spawning ground device is designed, including a fixed grid and adjustment components. By adjusting the pressurized tank in the assembly to control the water volume, the fixed grid can be adjusted to different water depths to meet the growth needs of different fish schools. In addition, the device is equipped with auxiliary components including floating plates, positioning cylinders and feed tanks, which improves operational safety and efficiency.

Benefits of technology

The water depth of the spawning ground is dynamically adjusted according to the needs of different fish schools, which improves the survival rate of fish eggs, and simplifies the operation process through auxiliary components and improves midwifery efficiency.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119422983A_ABST
    Figure CN119422983A_ABST
Patent Text Reader

Abstract

The invention discloses a device and method for an artificial spawning site. The device comprises a fixed grid, a side intercepting net is clamped to the outer side end face of the fixed grid, a top grid is attracted to the top end of the fixed grid, a top intercepting net is embedded into the inner side of the top grid, and magnets are fixedly installed at the four corners of the inner side of the fixed grid. Connecting rods are welded to the four corners of the outer side of the fixed grid, sliding sleeves are welded to one ends of the connecting rods, extension rods are slidably mounted on the inner sides of the sliding sleeves, and threaded rods are welded to the top ends of the extension rods. The fixed grids can be controlled to be at different water depths by controlling the water quantity in the pressurizing tank, so that different spawning fish schools can spawn at proper water temperature, and the fixed grids can float up according to the requirements of the fries after the fish schools spawn, so that the temperature of a fries growing area can be increased, and the survival rate of the fries can be increased. And the group of seedlings can survive better.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the technical field of fishery resource protection, in particular to a device and method for artificial spawning grounds. Background Art

[0002] Reproduction is an important link in the entire life history of fish. This link is interconnected with other links to ensure the preservation and proliferation of species, so as to achieve the purpose of constantly replenishing and increasing the number of populations. Artificial spawning grounds are based on the understanding of species reproduction habits and the artificial use of natural environmental conditions to help fish reproduce and grow better; However, the water depth of existing artificial spawning grounds is mostly fixed, which cannot meet the suitable water depth and temperature of different types of fish, resulting in difficulty in quickly and conveniently providing a suitable environment when different fish need to be bred, thereby reducing the survival rate of fish eggs. In order to avoid the above technical problems, it is indeed necessary to provide an artificial spawning ground device and method to overcome the above defects in the prior art. Summary of the invention

[0003] The present invention provides an artificial spawning ground device and method, which can effectively solve the problem mentioned in the above background technology that the water depth of existing artificial spawning grounds is mostly fixed and cannot meet the suitable water depth and temperature of different types of fish, thereby making it difficult to quickly and conveniently provide a suitable environment when different fish need to be bred, thereby reducing the survival rate of fish eggs.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an apparatus and method for an artificial spawning ground, comprising a fixed grid, an outer end surface of which is mounted an adjustment component; The regulating assembly includes a side interception net, a top grid, a top interception net, a magnet, a bottom grid, a connecting rod, a sliding sleeve, an extension rod, a threaded rod, a threaded connection groove, a primary length rod, a stabilizing disc, a stabilizing needle, a fixing block, a pressurized tank, an inlet and outlet water pipe, a filter screen, an air inlet pipe, an air delivery hose and a solenoid valve; The outer end surface of the fixed grid is clamped with a side interception net, the top of the fixed grid is adsorbed with a top grid, the inner side of the top grid is embedded with a top interception net, the inner four corners of the fixed grid are fixed with magnets, and the bottom end of the fixed grid is adsorbed with a bottom grid; The four outer corners of the fixed grid are welded with connecting rods, one end of the connecting rod is welded with a sliding sleeve, an extension rod is slidably installed on the inner side of the sliding sleeve, the top of the extension rod is welded with a threaded rod, the bottom end of the extension rod is provided with a threaded connection groove, the inner side of the threaded connection groove is threadedly connected with a primary length rod, the bottom end of the primary length rod is welded with a stabilizing disk, and the bottom end of the stabilizing disk is welded with a stabilizing pin; A fixed block is welded to the side end face of the fixed grid, a pressurized tank is installed on one side end face of the fixed block, an inlet and outlet water pipe is welded to the bottom end of the pressurized tank, a filter is installed at the bottom end of the inlet and outlet water pipe, an air intake pipe is welded at the top position of the outer side of the pressurized tank, an air intake end of the air intake pipe is connected to an air supply hose, and an air intake end of the air supply hose is connected to a solenoid valve.

[0005] Preferably, a threaded rod is welded to the top end of the primary length rod, and the primary length rod is connected to the extension rod via the threaded rod.

[0006] Preferably, a movable groove is provided on the inner side of the sliding sleeve, and the inner diameter of the movable groove is equal to the outer diameter of the extension rod.

[0007] Preferably, a plurality of stabilizing needles are provided, and the plurality of stabilizing needles are evenly distributed at the bottom of each of the stabilizing plates.

[0008] Preferably, two pressurized tanks are provided, and the two pressurized tanks are symmetrically mounted on both side end surfaces of the fixed grid, and the inlet and outlet water pipes are connected to the internal chambers of the pressurized tanks.

[0009] Preferably, the air inlet end of the solenoid valve is connected to an external air pump, and the input end of the solenoid valve is electrically connected to an output end of an external controller.

[0010] Preferably, an auxiliary component is installed on the outer side of the extension rod; The auxiliary components include a floating plate, a positioning cylinder, a limiting threaded cylinder, a limiting screw, an operating slot, a clamping ring, a handle, a polyethylene bag, a counterweight, a mounting slot, a feed box, a sealing cover, a grip and a sliding slot; The outer side of the extension rod is slidably sleeved with a positioning cylinder, the outer side of the positioning cylinder is welded with a limiting threaded cylinder, the inner side of the limiting threaded cylinder is threadedly connected to a limiting screw, the inner side of the floating plate is provided with an operating groove, the inner side of the floating plate is slidably clamped with a clamping ring, the top of the clamping ring is welded with a handle, the bottom end of the clamping ring is bonded with a polyethylene bag, the bottom end of the polyethylene bag is bonded with a counterweight block, the inner side of the floating plate is provided with an installation groove, the inner side of the installation groove is embedded with a feed box, the top of the feed box is clamped with a sealing cover, the top of the sealing cover is welded with a handle, and the inner side of the positioning cylinder is provided with a sliding groove.

[0011] Preferably, the inner diameter of the sliding groove is equal to the outer diameter of the extension rod, and the contact surfaces of the sliding groove and the extension rod are both smooth curved surfaces.

[0012] Preferably, an embedding groove is provided on the inner side of the floating plate at a position corresponding to the clamping ring, and the clamping ring is clamped on the inner side of the floating plate through the embedding groove.

[0013] Preferably, Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use: 1. An adjusting component is provided, and the fixed grid can be controlled to different water depths by controlling the amount of water inside the pressurized tank, so that different spawning fish groups can spawn in suitable water temperatures, and after the fish groups spawn, the fixed grid can be floated according to the needs of the seedlings, thereby increasing the temperature of the seedling growth area and helping the seedlings to survive better. When the fixed grid is raised or lowered, it is raised or lowered vertically in the same water area, because the position is fixed by the extension rod and the primary length rod, and the position will not change due to the water flow, thereby preventing the survival rate from being reduced due to environmental changes during the spawning period.

[0014] 2. An auxiliary component is provided. The positioning cylinder is put on the outside of the extension rod and then the limiting screws on the inside of all the limiting threaded cylinders are tightened to fix the floating plate to prevent shaking. This allows the operator to perform the midwifery operation more safely. Before putting the fish in, the operator can place the fish feed on the inside of the feed box and then connect the feed box to the inside of the installation slot. In the subsequent spawning process, the sealing cover can be directly opened to feed through the operating slot. The operation is simple and convenient to improve the midwifery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] In the attached picture: Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the installation structure of the top interception net of the present invention; Figure 3 is a schematic diagram of the structure of the regulating assembly of the present invention; Figure 4 It is a schematic diagram of the installation structure of the stabilizing needle of the present invention; Figure 5 It is a schematic diagram of the installation structure of the pressurized tank of the present invention; Figure 6 is a schematic diagram of the structure of the auxiliary components of the present invention; Figure 7 It is a schematic diagram of the installation structure of the counterweight block of the present invention; Numbers in the figure: 1, fixed grid; 2. Adjustment assembly; 201. Side interception net; 202. Top grid; 203. Top interception net; 204. Magnet; 205. Bottom grid; 206. Connecting rod; 207. Sliding sleeve; 208. Extension rod; 209. Threaded rod; 210. Threaded connection groove; 211. Primary length rod; 212. Stabilizing disk; 213. Stabilizing needle; 214. Fixing block; 215. Pressurized tank; 216. Inlet and outlet pipes; 217. Filter; 218. Inlet pipe; 219. Gas hose; 220. Solenoid valve; 3. Auxiliary components; 301. Float; 302. Positioning cylinder; 303. Limiting threaded cylinder; 304. Limiting screw; 305. Operating groove; 306. Snap ring; 307. Handle; 308. Polyethylene bag; 309. Counterweight; 310. Installation groove; 311. Feed box; 312. Sealing cover; 313. Handle; 314. Sliding groove. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] Example: Figure 1-7 As shown, the present invention provides a technical solution, a device and method for an artificial spawning ground, comprising a fixed grid 1, and an adjustment component 2 is installed on the outer end surface of the fixed grid 1; The regulating assembly 2 includes a side intercepting net 201, a top grid 202, a top intercepting net 203, a magnet 204, a bottom grid 205, a connecting rod 206, a sliding sleeve 207, an extension rod 208, a threaded rod 209, a threaded connection groove 210, a primary length rod 211, a stabilizing disk 212, a stabilizing needle 213, a fixing block 214, a pressurizing tank 215, an inlet and outlet water pipe 216, a filter 217, an air inlet pipe 218, an air delivery hose 219 and a solenoid valve 220; The outer end surface of the fixed grid 1 is clamped with a side interception net 201, the top of the fixed grid 1 is adsorbed with a top grid 202, the inner side of the top grid 202 is embedded with a top interception net 203, the inner four corners of the fixed grid 1 are fixedly installed with magnets 204, and the bottom end of the fixed grid 1 is adsorbed with a bottom grid 205; The four corners of the outer side of the fixed grid 1 are welded with connecting rods 206, one end of the connecting rod 206 is welded with a sliding sleeve 207, an extension rod 208 is slidably installed on the inner side of the sliding sleeve 207, a movable groove is provided on the inner side of the sliding sleeve 207, the inner diameter of the movable groove is equal to the outer diameter of the extension rod 208, and the sliding fixed grid 1 is conveniently slidably fixed, a threaded rod 209 is welded on the top of the extension rod 208, and a threaded connection groove 210 is provided on the bottom end of the extension rod 208, and the inner side of the threaded connection groove 210 is threadedly connected to the inner side of the threaded connection groove 210. There is a primary length rod 211, the top of the primary length rod 211 is welded with a threaded rod 209, the primary length rod 211 is connected to the extension rod 208 through the threaded rod 209, and is convenient for use in different water depths, the bottom of the primary length rod 211 is welded with a stabilizing plate 212, the bottom of the stabilizing plate 212 is welded with a stabilizing needle 213, and a plurality of stabilizing needles 213 are provided, and the plurality of stabilizing needles 213 are evenly distributed at the bottom of each stabilizing plate 212, which is conducive to stabilizing the primary length rod 211; A fixed block 214 is welded to the side end face of the fixed grid 1, and a pressurized tank 215 is installed on one side end face of the fixed block 214. An inlet and outlet water pipe 216 is welded to the bottom end of the pressurized tank 215. Two pressurized tanks 215 are provided, and the two pressurized tanks 215 are symmetrically installed on the two side end faces of the fixed grid 1. The inlet and outlet water pipes 216 are connected to the internal chamber of the pressurized tank 215, which is convenient for lifting and lowering the fixed grid 1. A filter screen 217 is installed at the bottom end of the inlet and outlet water pipes 216. An air intake pipe 218 is welded at the top position of the outer side of the pressurized tank 215. The air intake end of the air intake pipe 218 is connected to a gas hose 219, and the air intake end of the gas hose 219 is connected to a solenoid valve 220. The air intake end of the solenoid valve 220 is connected to an external air pump, and the input end of the solenoid valve 220 is electrically connected to the output end of the external controller.

[0019] An auxiliary component 3 is installed on the outer side of the extension rod 208; The auxiliary component 3 includes a floating plate 301, a positioning cylinder 302, a limiting threaded cylinder 303, a limiting screw 304, an operating groove 305, a clamping ring 306, a handle 307, a polyethylene bag 308, a counterweight 309, a mounting groove 310, a feed box 311, a sealing cover 312, a grip 313 and a sliding groove 314; The outer side of the extension rod 208 is slidably sleeved with a positioning cylinder 302, the outer side of the positioning cylinder 302 is welded with a limiting threaded cylinder 303, the inner side of the limiting threaded cylinder 303 is threadedly connected to a limiting screw 304, an operating groove 305 is provided on the inner side of the floating plate 301, a clamping ring 306 is slidably clamped on the inner side of the floating plate 301, an embedding groove is provided at the inner side of the floating plate 301 corresponding to the clamping ring 306, the clamping ring 306 is clamped on the inner side of the floating plate 301 through the embedding groove, which is conducive to fixing the clamping ring 306, a handle 307 is welded on the top of the clamping ring 306, and the clamping ring A polyethylene bag 308 is bonded to the bottom end of 306, and a counterweight block 309 is bonded to the bottom end of the polyethylene bag 308. A mounting groove 310 is provided on the inner side of the floating plate 301, and a feed box 311 is embedded in the inner side of the mounting groove 310. A sealing cover 312 is clamped on the top of the feed box 311, and a handle 313 is welded on the top of the sealing cover 312. A sliding groove 314 is provided on the inner side of the positioning cylinder 302, and the inner diameter of the sliding groove 314 is equal to the outer diameter of the extension rod 208. The contact surfaces of the sliding groove 314 and the extension rod 208 are both smooth curved surfaces, which are convenient for installing and disassembling the floating plate 301.

[0020] The working principle and use process of the present invention are as follows: first, the operator determines the overall water depth of the spawning area, and then determines the number of extension rods 208 to be used according to the water depth, and then tightens the threaded rod 209 at the top of the primary length rod 211 to the inner side of the threaded connection groove 210, thereby connecting the extension rod 208 and the primary length rod 211. After all the extension rods 208 are connected, the operator inserts the primary length rod 211 into the water, and at this time, the stabilizing needle 213 at the bottom of the stabilizing plate 212 can be inserted into the bottom mud of the water area, so that a number of extension rods 208 can be connected. The extension rod 208 is fixed, and then the sliding sleeve 207 is put on the outside of the extension rod 208. At this time, the interior of the pressurized tank 215 is full of air, so the fixed grid 1 will float on the water surface. Then the operator can remove the top grid 202, and the magnetic attraction between the top grid 202 and the magnet 204 can be released. Then the operator can place the fish that need to spawn inside the fixed grid 1, and then re-attract the top grid 202 on the top of the magnet 204 to fix it. Then, some types of fish need deeper temperature. When spawning in lower waters, the operator can control the external air pump to pump air and open the solenoid valve 220. At this time, the external air pump will pump air through the air hose 219. At this time, the air pressure inside the pressurized tank 215 becomes smaller, and then the water will enter the pressurized tank 215 through the filter 217 and the inlet and outlet pipes 216. After a certain amount of water enters, the pressurized tank 215 will sink, and at this time, the fixed grid 1 and the fish school inside will all sink, thereby lowering the fixed grid 1 to the corresponding water depth. At this time, the water depth can be judged according to the release length of the air hose 219, and the pressure can be controlled by The amount of water in the pressure tank 215 can control the fixed grid 1 to different water depths, so that different spawning fish can spawn in suitable water temperatures, and after the fish spawn, the fixed grid 1 can float up according to the needs of the seedlings, so as to increase the temperature of the seedling growth area and help the seedlings survive better. When the fixed grid 1 is raised or lowered, it is raised or lowered vertically in the same water area, because the position is fixed by the extension rod 208 and the primary length rod 211, and the position will not change due to the water flow, thereby preventing the environmental changes during the spawning period from reducing the survival rate; Next, before releasing the fish, the fish can be placed inside the polyethylene bag 308, and then the operator can hold the handle 307 to clamp the clamping ring 306 and the polyethylene bag 308 to the inside of the floating plate 301, so that the fish can adapt to the water environment in advance. Then, during this application process, the operator can stand on the top of the floating plate 301 to perform other operations, and can put the positioning cylinder 302 on the outside of the extension rod 208 and then tighten all the limiting screws 304 on the inside of the limiting threaded cylinder 303 to fix the floating plate 301 to prevent shaking, so that the operator can perform the midwifery operation more safely. Before releasing the fish, the operator can place the fish feed on the inside of the feed box 311 and then clamp the feed box 311 to the inside of the mounting groove 310. In the subsequent spawning process, the sealing cover 312 can be directly opened to feed through the operating groove 305. The operation is simple and convenient to improve the midwifery efficiency.

[0021] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An apparatus and method for an artificial spawning ground, comprising a fixed grid (1), characterized in that: An adjustment component (2) is installed on the outer end surface of the fixed grid (1); The regulating assembly (2) comprises a side intercepting net (201), a top grid (202), a top intercepting net (203), a magnet (204), a bottom grid (205), a connecting rod (206), a sliding sleeve (207), an extension rod (208), a threaded rod (209), a threaded connection groove (210), a primary length rod (211), a stabilizing disk (212), a stabilizing needle (213), a fixing block (214), a pressurizing tank (215), an inlet and outlet water pipe (216), a filter screen (217), an air inlet pipe (218), an air delivery hose (219) and a solenoid valve (220); The outer end surface of the fixed grid (1) is clamped with a side interception net (201), the top of the fixed grid (1) is adsorbed with a top grid (202), the inner side of the top grid (202) is embedded with a top interception net (203), the four inner corners of the fixed grid (1) are fixedly mounted with magnets (204), and the bottom end of the fixed grid (1) is adsorbed with a bottom grid (205); Connecting rods (206) are welded to the four outer corners of the fixed grid (1); a sliding sleeve (207) is welded to one end of the connecting rod (206); an extension rod (208) is slidably mounted on the inner side of the sliding sleeve (207); a threaded rod (209) is welded to the top of the extension rod (208); a threaded connection groove (210) is provided at the bottom end of the extension rod (208); a primary length rod (211) is threadedly connected to the inner side of the threaded connection groove (210); a stabilizing disk (212) is welded to the bottom end of the primary length rod (211); and a stabilizing pin (213) is welded to the bottom end of the stabilizing disk (212); A fixing block (214) is welded to a side end face of the fixing grid (1), a pressurized tank (215) is mounted on one side end face of the fixing block (214), an inlet and outlet water pipe (216) is welded to the bottom end of the pressurized tank (215), a filter screen (217) is mounted on the bottom end of the inlet and outlet water pipe (216), an air intake pipe (218) is welded to the top position of the outer side of the pressurized tank (215), an air intake end of the air intake pipe (218) is connected to an air delivery hose (219), and an air intake end of the air delivery hose (219) is connected to a solenoid valve (220).

2. The device and method for an artificial spawning ground according to claim 1, characterized in that: A threaded rod (209) is welded to the top end of the primary length rod (211), and the primary length rod (211) is connected to the extension rod (208) via the threaded rod (209).

3. The device and method for an artificial spawning ground according to claim 1, characterized in that: A movable groove is provided on the inner side of the sliding sleeve (207), and the inner diameter of the movable groove is equal to the outer diameter of the extension rod (208).

4. The device and method for an artificial spawning ground according to claim 1, characterized in that: A plurality of stabilizing needles (213) are provided, and the plurality of stabilizing needles (213) are evenly distributed at the bottom of each stabilizing plate (212).

5. The device and method for an artificial spawning ground according to claim 1, characterized in that: Two pressurized tanks (215) are provided, and the two pressurized tanks (215) are symmetrically mounted on the two side end surfaces of the fixed grid (1), and the inlet and outlet water pipes (216) are connected to the internal chambers of the pressurized tanks (215).

6. The device and method for an artificial spawning ground according to claim 1, characterized in that: The air inlet end of the solenoid valve (220) is connected to an external air pump, and the input end of the solenoid valve (220) is electrically connected to an output end of an external controller.

7. The device and method for an artificial spawning ground according to claim 1, characterized in that: An auxiliary component (3) is installed on the outer side of the extension rod (208); The auxiliary component (3) comprises a floating plate (301), a positioning cylinder (302), a limiting threaded cylinder (303), a limiting screw rod (304), an operating groove (305), a clamping ring (306), a handle (307), a polyethylene bag (308), a counterweight (309), a mounting groove (310), a feed box (311), a sealing cover (312), a grip (313) and a sliding groove (314); The outer side of the extension rod (208) is slidably sleeved with a positioning cylinder (302), the outer side of the positioning cylinder (302) is welded with a limiting threaded cylinder (303), the inner side of the limiting threaded cylinder (303) is threadedly connected to a limiting screw rod (304), the inner side of the floating plate (301) is provided with an operating groove (305), the inner side of the floating plate (301) is slidably clamped with a clamping ring (306), the top end of the clamping ring (306) is welded with a handle (307), and the clamping ring (30 6) is bonded to the bottom end thereof with a polyethylene bag (308), a counterweight (309) is bonded to the bottom end of the polyethylene bag (308), a mounting groove (310) is provided on the inner side of the floating plate (301), a feed box (311) is embedded in the inner side of the mounting groove (310), a sealing cover (312) is clamped on the top end of the feed box (311), a handle (313) is welded on the top end of the sealing cover (312), and a sliding groove (314) is provided on the inner side of the positioning tube (302).

8. The device and method for an artificial spawning ground according to claim 7, characterized in that: The inner diameter of the sliding groove (314) is equal to the outer diameter of the extension rod (208), and the contact surfaces of the sliding groove (314) and the extension rod (208) are both smooth curved surfaces.

9. The device and method for an artificial spawning ground according to claim 7, characterized in that: An embedding groove is provided on the inner side of the floating plate (301) at a position corresponding to the clamping ring (306), and the clamping ring (306) is clamped on the inner side of the floating plate (301) through the embedding groove.

10. An artificial spawning ground device according to claims 1-9, characterized in that: The invention discloses a method for using a device of an artificial spawning ground.

Citation Information

Patent Citations

  • Vertical lift type multifunctional miniature fishing boat

    CN105480388A

  • Guiderail type typhoon-resistant deep water cultivation intelligent net cage

    CN110115237A

  • Floating and sinking type aquaculture device

    CN112544519A

  • Movable bottom-supported ocean platform net cage structure and construction method thereof

    CN114223595A

Cited By

  • Multi-section type surrounding and catching device for rapid cleaning of scavenger

    CN121128684A