Deep-sea cage type aquaculture net cage and using method thereof

By designing the cage frame structure and zippered fish discharge device of the deep-sea cage cage, the structural stability of the deep-sea cage cage in bad weather is solved, and efficient fish discharge and extended service life are achieved.

CN120360043APending Publication Date: 2025-07-25ZHEJIANG OCEAN UNIV
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Patent Information

Application Number
CN202510545370.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-28
Publication Date
2025-07-25

AI Technical Summary

Technical Problem

The existing breeding cages are easily affected by typhoons and winds in deep sea environments, resulting in structural deformation, insufficient overall strength, and cannot effectively resist bad weather.

Method used

A deep-sea cage farming cage is designed, adopting a cage frame structure, including an upper fixing disc, a curved claw steel frame and a lower fixing disc. It is fixed by connecting parts, combined with the number of arc-shaped claw steel frames, which are four claws, six claws or eight claws to enhance structural stability, and a zipper structure is set on the mesh clothing device to facilitate fish discharge.

Benefits of technology

It improves the overall strength of the cage, can effectively resist typhoons and wind and waves, and at the same time improves the efficiency and flexibility of fish production, extending the service life of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a deep-sea cage type aquaculture net cage, and belongs to the technical field of aquaculture net cages. A deep sea cage type culture net cage comprises a netting device, a cage type frame used for wrapping the netting device and bait casting holes, and the cage type frame comprises an upper fixing disc, a plurality of arc-shaped claw steel frames and a lower fixing disc; a bait casting hole is formed in the center of the upper fixing disc, a plurality of first connecting parts are arranged on the outer edge of the upper fixing disc in a surrounding mode, one end of each arc-shaped claw steel frame is fixed to one first connecting part of the upper fixing disc through a first connecting piece, and the number of the arc-shaped claw steel frames is matched with that of the first connecting parts. The net cage has the advantages of being higher in overall strength and suitable for deep sea culture.
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Description

Technical Field

[0001] The invention belongs to the technical field of aquaculture cages, and in particular relates to a deep-sea cage-type aquaculture cage and a use method thereof. Background Art

[0002] Existing aquaculture cages are generally ordinary columnar or frame-shaped aquaculture cages, including nets, frames, feeding ports and fish outlets. However, in the case of deep-sea aquaculture, due to the high risk of large typhoons or strong waves at sea, frame-shaped aquaculture cages are easily deformed by typhoons or deformed by wind and waves. Aquaculture cages that are not protected by cage-type frames cannot withstand typhoons and waves, and the overall strength of the aquaculture cages is relatively low. Summary of the invention

[0003] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a deep-sea cage-type aquaculture cage and a method of using the same, which has the advantages of higher overall strength of the cage and is suitable for deep-sea aquaculture.

[0004] The purpose of the present invention can be achieved through the following technical solutions: A deep-sea cage-type aquaculture net box, comprising a net device, a cage-type frame for wrapping the net device, and a bait casting hole.

[0005] The cage frame includes an upper fixing plate, a plurality of arc-shaped claw steel frames and a lower fixing plate;

[0006] A bait throwing hole is provided in the center of the upper fixed plate, and a plurality of first connecting parts are arranged around the outer edge of the upper fixed plate. One end of each arc-shaped claw steel frame is fixed to one of the first connecting parts of the upper fixed plate through a first connecting member, and the number of the arc-shaped claw steel frames matches the number of the first connecting parts.

[0007] The lower fixed plate is provided with a first fish outlet hole for releasing fish and a cover for opening and closing the first fish outlet hole by means of a plurality of ingot screws. A plurality of second connecting parts are arranged around the outer edge of the lower fixed plate. The other end of each arc-shaped claw steel frame is fixed to one of the second connecting parts of the upper fixed plate by means of a second connecting member.

[0008] Each arc-shaped claw steel frame is provided with a plurality of connecting rings arranged from top to bottom for connecting the net device with the cage frame;

[0009] The net device comprises a horizontal web, a vertical web and a mesh, a plurality of the horizontal webs and a plurality of the vertical webs are interlaced with each other and woven into a net structure with the mesh, a zipper assembly is sewn on the net structure, and the zipper assembly has a zipper structure for partially opening the net device;

[0010] The bottom of the net structure is connected to the lower fixing plate and communicated with the first fish outlet hole 331 .

[0011] Preferably, the zipper structure includes two longitudinally arranged zipper fabrics symmetrically disposed and a transverse zipper fabric. Both ends of the transverse zipper fabric are respectively connected to both ends of the longitudinally arranged zipper fabrics, and together form an integral zipper fabric. A zipper element for opening the zipper on the integral zipper fabric is installed on the integral zipper fabric.

[0012] Preferably, a plurality of spring hinge structures for preventing fish from escaping are disposed around the bottom of the upper fixing plate.

[0013] Preferably, a bait feeding net passage for feeding bait is further disposed at the bait feeding hole.

[0014] Preferably, the first connecting member is a first bolt, and the upper fixing plate is connected to the upper ends of a plurality of the arc-shaped claw steel frames by the first bolt.

[0015] Preferably, the second connecting member is a second bolt, and the lower fixing plate is connected to the lower ends of a plurality of the arc-shaped claw steel frames by the second bolt.

[0016] Preferably, the arc-shaped claw steel frame is integrally bent and processed.

[0017] Preferably, a deep-sea cage aquaculture net cage and a using method thereof, applicable to the deep-sea cage aquaculture net cage according to any one of claims 1-7, include the following steps:

[0018] S1. By assembling between the upper ends of a plurality of arc-shaped claw steel frames and the upper positioning plate and between the lower ends of a plurality of arc-shaped claw steel frames and the lower positioning plate, a cage-shaped frame can be built, and a netting device for culturing fish is hung inside the cage-shaped frame through connecting rings;

[0019] S2. By opening the spring hinge structure and taking out the bait feeding net passage in the bait feeding hole; an operator puts bait into the bait feeding passage to feed the fish;

[0020] S3. When it is necessary to release the fish population, the operator opens the cover by removing the wing nuts, connects the first fish outlet to the outside, or opens a part of the netting device by pulling open the zipper element on the integral zipper fabric of the netting device to leave a square large opening for releasing the fish;

[0021] S4. By zipping up the zipper on the integral zipper fabric, the square large opening is closed to stop releasing the fish; or by covering the cover again to close the first fish outlet to stop releasing the fish.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] 1. By combining several arc-shaped claw steel frames with an upper fixing plate and a lower fixing plate through a first connecting piece and a second connecting piece, a cage aquaculture net cage with four claws, six claws or eight claws is formed. This cage aquaculture net cage is submerged underwater for deep-sea and far-sea aquaculture, and has good anti-wave performance, effectively resisting typhoons.

[0024] 2. By setting a zipper structure on the netting device that can locally open the netting device to leave a square large opening, the quantity and size of fish caught are increased, facilitating fish catching. At the same time, the efficiency of fish catching is greatly improved, making it more convenient and fast. Also, by setting the number of six-claw or eight-claw arc-shaped claw steel frames, it is beneficial to improve the strength of the device and greatly extend the service life of the device.

[0025] 3. It is applicable to deep-sea and far-sea aquaculture. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the present invention.

[0027] Figure 2 It is a top view of the present invention.

[0028] Figure 3 It is a front view of the present invention.

[0029] Figure 4 It is a side view of the present invention.

[0030] Figure 5 It is an enlarged view of part A in the present invention.

[0031] Figure 6 It is a partial connection cross-sectional view at the lower positioning plate of the present invention.

[0032] In the figure, 2 is the netting device; 31 is the upper fixing plate; 311 is the first connecting part; 32 is the arc-shaped claw steel frame; 33 is the lower fixing plate; 331 is the first fish outlet hole; 332 is the ingot screw; 333 is the closing cover; 334 is the second connecting part; 34 is the feeding hole; 4 is the connecting ring; 51 is the longitudinal zipper cloth; 52 is the transverse zipper cloth; 53 is the zipper part; 54 is the zipper section; 6 is the spring hinge structure; 7 is the feeding net channel; 81 is the first bolt; 82 is the second bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] Such as Figures 1 to 5As shown in the figure, a deep - sea cage aquaculture net cage includes a netting device 2, a cage - type frame for wrapping the netting device 2, and a feeding hole 34.

[0035] The cage - type frame includes an upper fixing plate 31, a number of arc - shaped claw steel frames 32, and a lower fixing plate 33.

[0036] A feeding hole 34 is opened at the center of the upper fixing plate 31. A number of first connecting parts 311 are arranged around the outer edge of the upper fixing plate 31. One end of each arc - shaped claw steel frame 32 is fixed to one of the first connecting parts 311 of the upper fixing plate 31 through a first connecting piece, and the number of the arc - shaped claw steel frames 32 matches the number of the first connecting parts 311.

[0037] The lower fixing plate 33 has a first fish - discharging hole 331 for discharging fish and a cover 333 for opening and closing the first fish - discharging hole 331 through a number of ingot - shaped screws 332. A number of second connecting parts 334 are arranged around the outer edge of the lower fixing plate 33. The other end of each arc - shaped claw steel frame 32 is fixed to one of the second connecting parts 334 of the upper fixing plate 31 through a second connecting piece.

[0038] By setting the ingot - shaped screws 332 and the cover 333 that can open and close the first fish - discharging hole 331, if fish need to be discharged, the bottom ingot - shaped screws 332 are removed one by one, and then the cover 333 is opened to make the first fish - discharging hole 331 communicate with the outside for fish discharging.

[0039] A number of connecting rings 4 for connecting the netting device 2 and the cage - type frame are arranged on each arc - shaped claw steel frame 32 in a top - down manner.

[0040] The netting device 2 includes horizontal ropes, vertical ropes, and a netting sheet. A number of the horizontal ropes and a number of the vertical ropes are interlaced with each other and woven with the netting sheet into a netting structure. A zipper assembly is sewn on the netting structure, and the zipper assembly has a zipper structure for locally opening the netting device 2.

[0041] By jointly interlacing and weaving the horizontal ropes, vertical ropes, and the netting sheet into a netting structure, it can not only maintain the strength of the netting structure, but also ensure sufficient aquaculture volume, and is more conducive to improving the toughness of the netting structure, making it not easy to break.

[0042] The bottom of the netting structure is connected to the lower fixing plate 33 and communicates with the first fish - discharging hole 331.

[0043] With the above structure, by combining several arc-shaped claw steel frames 32 with the upper fixing plate 31 and the lower fixing plate 33 through the first connecting piece and the second connecting piece, a cage aquaculture net cage with four claws, six claws or eight claws is set up, and the typhoon resistance strength at different geographical locations and in the far sea and near sea can be adjusted according to the evaluated position of the placed cage aquaculture net cage; this net cage is hoisted on the floating rope on the sea surface and sinks underwater. The upper fixing plate 31 is fixed to three rings of the upper fixing plate 31 through ropes, connected upward to the ropes on the sea surface, and suspended underwater, so that it has good typhoon and wave resistance effects. In the deep-sea aquaculture house, it can have better wave resistance performance and can effectively resist typhoons. At the same time, by setting the upper fixing plate 31, several arc-shaped claw steel frames 32 and the lower fixing plate 33, the upper end of the arc-shaped claw steel frame 32 and the first connecting part 311 of the upper fixing plate 31 are installed by threaded connection through the first connecting piece, and the lower end of the arc-shaped claw steel frame 32 and the second connecting part 334 set on the lower fixing plate 33 are connected and installed through the second connecting piece. A connecting ring 4 is arranged along the outer wall on one side of each arc-shaped claw steel frame 32 close to the netting device 2, and the net ropes on the netting structure are tied in the connecting holes of the connecting ring 4 for connection and fixation; by adding a zipper structure on the netting device 2, there are multiple fish discharging options when fish need to be released. First, by opening the zipper structure, the netting device 2 can be lifted to leave a square large opening, which is called a fish discharging channel, and fish can be released. At the same time, by zipping up the zipper structure, the fish discharging channel can be closed. Second, by removing the bottom ingot screws 332 one by one and then opening the cover 333, the first fish discharging hole 331 is connected to the outside for fish discharging. Third, by simultaneously pulling open the zipper structure to lift the netting device 2 to leave a square large opening and opening the cover 333 to connect the first fish discharging hole 331 to the outside, the device can discharge fish not only from the bottom first fish discharging hole 331 but also through the fish discharging channel formed by pulling open the zipper structure. The setting of this structure is beneficial to having the first fish discharging hole 331 below it and having a zipper structure on the netting device 2 that can locally open the netting device 2 to leave a square large opening, increasing the number of fish discharged, facilitating fish discharging, greatly improving the fish discharging efficiency, being more convenient and fast, and being able to flexibly open or close the cover 333 and the zipper structure according to the required fish discharging amount, with stronger practicability. Moreover, this cage aquaculture net cage sinks underwater and has good wind resistance performance.

[0044] In the present invention, some dead fish in the netting device can also sink to the bottom position of the netting device by gravity for collection; when the first fish discharging hole 331 is opened to release live fish, dead fish will be released at the same time, which is beneficial to quickly releasing live fish and dead fish by gravity.

[0045] Specifically, such as Figures 1 to 5As shown, the zipper structure includes two longitudinally arranged zipper fabrics 51 that are symmetrically disposed and a transverse zipper fabric 52. Both ends of the transverse zipper fabric 52 are respectively connected to both ends of the longitudinally arranged zipper fabrics 51, and together they form an integral zipper fabric. A zipper element 53 for opening the zipper on the integral zipper fabric is installed on the integral zipper fabric.

[0046] With the above structure, by providing two longitudinally arranged zipper fabrics 51 and a transverse zipper fabric 52, the longitudinally arranged zipper fabrics 51 and the transverse zipper fabric 52 are arranged perpendicular to each other. And the two longitudinally arranged zipper fabrics 51 are divided into a first longitudinally arranged zipper fabric 51 and a second longitudinally arranged zipper fabric 51. The upper end of the first longitudinally arranged zipper fabric 51 is connected to the left end of the transverse zipper fabric 52, and the second longitudinally arranged zipper fabric 51 is connected to the right end of the transverse zipper fabric 52. The integral zipper fabric includes the first longitudinally arranged zipper fabric 51, the second longitudinally arranged zipper fabric 51, and the transverse zipper fabric 52. It forms a zipper portion from the bottom end of the first longitudinally arranged zipper fabric 51, passing through the transverse zipper fabric 52 to the bottom of the second longitudinally arranged zipper fabric 51. The zipper element 53 is arranged on the zipper portion, which is conducive to a zipper structure that can partially open the netting device 2 to leave a square large opening, increasing the quantity and size of the fish caught, facilitating the release of fish, and at the same time greatly improving the efficiency of releasing fish, making it more convenient and fast.

[0047] As Figures 1 to 5 shown, a plurality of spring hinge structures 6 for preventing fish from escaping are arranged around the bottom of the upper fixing plate 31.

[0048] By providing the spring hinge structure 6 at the upper fixing plate 31, it is conducive to preventing and blocking fish from escaping from the top. At the same time, a feeding net channel 7 is also arranged at the feeding hole 34. The bait is first fed into the interior of the netting device 2 by opening the spring hinge structure 6 and then through the feeding net channel 7 provided at the feeding place to the fish group inside the netting device 2, which is conducive to facilitating the feeding of the fish group.

[0049] As Figures 1 to 5 shown, the first connecting member is a first bolt 81, and the upper fixing plate 31 is connected to the upper ends of a plurality of the arc-shaped claw steel frames 32 by the first bolt 81.

[0050] By providing the first bolt 81, it is conducive to fixedly connecting the upper fixing plate 31 and the arc-shaped claw steel frames 32, with firm connection and convenient disassembly and assembly.

[0051] As Figures 1 to 5 shown, the second connecting member is a second bolt 82, and the lower fixing plate 33 is connected to the lower ends of a plurality of the arc-shaped claw steel frames 32 by the second bolt 82.

[0052] By providing the second screw, it is conducive to conveniently connecting the lower ends of the arc-shaped claw steel frames 32 to the lower fixing plate 33, with firm fixation and convenient disassembly and assembly at the same time.

[0053] As Figures 1 to 5 shown, the arc-shaped claw steel frame 32 is made by integral bending. The stainless steel body with integral bending has higher strength. At the same time, the number of arc-shaped claw steel frames 32 changes from none to six arc-shaped claw steel frames 32 with four claws, six arc-shaped claw steel frames 32 with six claws or eight arc-shaped claw steel frames 32 with eight claws. The arc-shaped claw steel frames 32 are connected to the upper fixing frame and the lower fixing frame, which are used for deep-sea and far-sea aquaculture, and have good anti-wave performance, can resist typhoons, are beneficial to greatly improving the overall strength of the device, and the structure is more stable and reliable, greatly extending the service life of the device.

[0054] As Figures 1 to 5 shown, through the following steps: S1. By assembling between the upper ends of several arc-shaped claw steel frames 32 and the upper positioning disc and assembling between the lower ends of several arc-shaped claw steel frames 32 and the lower positioning disc, a cage-shaped frame can be built. Inside the cage-shaped frame, a netting device 2 for fish farming is hung through a connecting ring 4;

[0055] S2. By opening the spring hinge structure 6 and taking out the feeding net channel 7 in the feeding hole 34; the operator puts the bait into the feeding channel to feed the fish;

[0056] S3. When the fish need to be released, the operator opens the cover 333 by removing the ingot screw 332 to connect the first fish outlet 331 with the outside, or opens the zipper member 53 on the overall zipper cloth of the netting device 2 to open a part of the netting device 2 to leave a square large opening for releasing the fish;

[0057] S4. By zipping up the overall zipper cloth, the square large opening is closed to stop the release of the fish; or by covering the cover 333 again, the first fish outlet 331 is closed to stop the release of the fish.

[0058] By adding a zipper structure to the netting device 2, there are multiple options for releasing fish when needed. First, by opening the zipper structure, the netting device 2 can be lifted to leave a large square opening, called a fish release channel, through which the fish can be released. At the same time, by zipping up the zipper structure, the fish release channel can be closed. Second, by removing the bottom ingot screws 332 one by one and then opening the cover 333, the first fish release hole 331 is connected to the outside to release the fish. Third, by simultaneously unzipping the zipper structure to lift the netting device 2 and leave a large square opening and opening the cover 333 to connect the first fish release hole 331 to the outside, the device can release fish not only from the bottom first fish release hole 331 but also through the fish release channel formed by unzipping the zipper structure. The setting of this structure is beneficial for having the first fish release hole 331 below it and having a zipper structure on the netting device 2 that can locally open the netting device 2 to leave a large square opening, increasing the number of fish released, facilitating fish release, and greatly improving the efficiency of fish release. It is more convenient and fast, and the cover 333 and the zipper structure can be flexibly opened or closed according to the required amount of fish released, with stronger practicability.

[0059] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly.

[0060] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. At the same time, the meaning of "and / or" appearing throughout the text is that it includes three scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0061] The above components are all common standard components or components known to those skilled in the art. Their structures and principles can all be learned by those skilled in the art through technical manuals or by conventional experimental methods.

[0062] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A deep - sea cage aquaculture net cage, comprising a netting device (2), a cage - type frame for wrapping the netting device (2), and a feeding hole (34). The cage - type frame includes an upper fixing plate (31), a number of arc - shaped claw steel frames (32), and a lower fixing plate (33). A feeding hole (34) is provided at the center of the upper fixing plate (31). A number of first connecting parts (311) are arranged around the outer edge of the upper fixing plate (31). One end of each arc - shaped claw steel frame (32) is fixed to one of the first connecting parts (311) of the upper fixing plate (31) through a first connecting piece. The number of the arc - shaped claw steel frames (32) matches the number of the first connecting parts (311). The lower fixing plate (33) has a first fish - discharging hole (331) for discharging fish and a cover (333) for opening and closing the first fish - discharging hole (331) through a number of ingot - shaped screws (332). A number of second connecting parts (334) are arranged around the outer edge of the lower fixing plate (33). The other end of each arc - shaped claw steel frame (32) is fixed to one of the second connecting parts (334) of the upper fixing plate (31) through a second connecting piece. A number of connecting rings (4) for connecting the netting device (2) and the cage - type frame are arranged on each arc - shaped claw steel frame (32) in a top - down arrangement. The netting device (2) includes horizontal ropes, vertical ropes, and a net sheet. A number of the horizontal ropes and a number of the vertical ropes are interlaced with each other and woven with the net sheet into a netting structure. A zipper assembly is sewn on the netting structure. The zipper assembly has a zipper structure for partially opening the netting device (2). The bottom of the netting structure is connected to the lower fixing plate (33) and is in communication with the first fish - discharging port.

2. The deep-sea cage aquaculture net cage according to claim 1, wherein The zipper structure includes two symmetrically arranged longitudinal zipper cloths (51) and a transverse zipper cloth (52). Both ends of the transverse zipper cloth (52) are respectively connected to both ends of the longitudinal zipper cloth (51) and jointly form an integral zipper cloth. A zipper part (53) for opening the zipper on the integral zipper cloth is installed on the integral zipper cloth.

3. The deep-sea cage aquaculture net cage according to claim 1, wherein, A number of spring hinge structures (6) for preventing fish from escaping are arranged around the bottom of the upper fixing plate (31).

4. The deep-sea cage aquaculture net cage according to claim 1, characterized in that, A feeding net channel (7) for conveying bait is also provided at the feeding hole (34).

5. The deep-sea cage aquaculture net cage according to claim 1, wherein, The first connecting piece is a first bolt (81). The upper fixing plate (31) is connected to the upper ends of a number of the arc - shaped claw steel frames (32) through the first bolt (81).

6. The deep-sea cage aquaculture net cage according to claim 1, characterized in that, The second connecting piece is a second bolt (82). The lower fixing plate (33) is connected to the lower ends of a number of the arc - shaped claw steel frames (32) through the second bolt (82).

7. The deep-sea cage aquaculture net cage according to claim 1, wherein, The arc - shaped claw steel frame (32) is made by integral bending processing.

8. A deep - sea cage aquaculture net cage and its usage method, applicable to the deep - sea cage aquaculture net cage described in any one of claims 1 - 7, characterized in that, It includes the following steps: S1. Through the assembly between the upper ends of a number of arc - shaped claw steel frames (32) and the upper positioning plate and the assembly between the lower ends of a number of arc - shaped claw steel frames (32) and the lower positioning plate, a cage - type frame can be built. A netting device (2) for culturing fish is hung inside the cage - type frame through the connecting rings (4). S2. By opening the spring hinge structure (6) and removing the bait feeding net channel (7) in the bait feeding hole (34); the operator puts the bait into the bait feeding channel to feed the fish. S3. When it is necessary to release the fish school, the operator opens the cover (333) by removing the ingot screw (332) to connect the first fish outlet hole (331) with the outside, or opens the zipper member (53) on the overall zipper cloth of the netting device (2) to partially open the netting device (2) to leave a large square opening for releasing the fish. S4. By zipping up the overall zipper cloth, close the large square opening to stop releasing the fish; or re-cover the cover (333) to close the first fish outlet hole (331) to stop releasing the fish.

Citation Information

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