A pufferfish trapping device suitable for a hatchery ship cabin breeding mode

Abstract

The utility model belongs to the aquaculture technical field, concretely relates to a pufferfish trapping device suitable for the cabin breeding mode of a breeding work ship, which is installed on the inner wall of the breeding cabin of the breeding work ship and comprises a trapping cage, a lifting device for realizing the lifting movement of the trapping cage along the inner wall of the breeding cabin, a fish-attracting lamp installed on the net cover of the trapping cage, and a fake bait assembly capable of rotating in the trapping cage. The utility model is suitable for the specific scene environment of the breeding cabin of the breeding work ship, can efficiently trap the pufferfish in the breeding cabin through the double trapping means of light and fake bait, reduces the damage of the pufferfish to the large yellow croakers in the breeding cabin, and ensures the safety of the breeding environment.

Description

Technical Field

[0001] This utility model belongs to the field of aquaculture technology, specifically relating to a pufferfish trapping device suitable for aquaculture vessel holding mode. Background Technology

[0002] Deep-sea waters have significant advantages such as abundant fishery resources, high-quality water sources, suitable water temperatures, and freedom from land-based pollution and diseases. They provide excellent conditions for large-scale marine aquaculture and logistics processing and supply, and represent a new space for the development of modern aquaculture and the marine economy.

[0003] Aquaculture vessels are one of the core pieces of equipment for developing deep-sea aquaculture projects. They can reach deep-sea areas inaccessible to ordinary aquaculture cages, possessing significant economic and social value. The applicant currently operates the world's first 100,000-ton fully enclosed, cruiseable large-scale aquaculture vessel, which is currently the world's largest, most functional, practical, and reliable deep-sea aquaculture equipment. The vessel contains several large aquaculture tanks, shaped like wide-mouthed bottles with an octagonal cross-section. These tanks exchange water with external seawater via circulating pumps. Each tank can reach a depth of 15 meters and can raise over 100 tons of adult fish. Using aquaculture vessels for fish farming can significantly increase fish yields. Currently, the vessel primarily raises large yellow croaker.

[0004] During the transfer of large yellow croaker fry into the rearing tanks and the water exchange process, invasive species, particularly pufferfish, are frequently encountered. Pufferfish farming is severely affected; healthy large yellow croakers are often chased and bitten on the tail fins by pufferfish, resulting in weakened mobility or, in severe cases, bacterial infection leading to tail rot and death. If diseased or dead large yellow croakers are not removed promptly, they will continue to be eaten by pufferfish, making them highly susceptible to disease transmission.

[0005] Existing fish traps are simple in design, primarily using bait placed in frame-type net cages or net traps to attract and lure fish. They then utilize structures such as funnel-shaped inlets, one-way valves, or maze-like passages for easy entry but difficult exit. The bait is typically fresh shellfish, fish, shrimp, crab, or synthetic bait, but it suffers from drawbacks such as easy spoilage, decreased effectiveness, and interference from non-target organisms, and it attracts a relatively limited number of fish species. Furthermore, there are currently no mature, widely available synthetic chemical baits for pufferfish; physical synthetic baits (simulating hard objects like shells) are generally used, but these are difficult for pufferfish to detect, resulting in low trapping efficiency. Utility Model Content

[0006] To address the shortcomings of the existing technologies, this utility model provides a pufferfish trapping device suitable for aquaculture vessel cabin rearing. It is applicable to the specific environment of the aquaculture cabin on aquaculture vessels, effectively trapping pufferfish, an invasive species, within the cabin. It features a simple structure and high efficiency.

[0007] This utility model discloses a pufferfish trapping device suitable for aquaculture vessel hold-raising mode. The pufferfish trapping device is installed on the inner wall of the aquaculture hold of the aquaculture vessel and includes:

[0008] The trap cage is a three-dimensional structure consisting of a net and a frame. It has a base at the bottom, the top of which is used to install bait components, and the bottom of which is used to connect a lifting device. The net has several funnel-shaped trap openings.

[0009] The lifting device is used to move the trap cage up and down along the inner wall of the breeding chamber;

[0010] The artificial lure assembly includes a drive motor, a rotating shaft, rigid connecting rods, and an artificial lure. The drive motor is mounted on the top of the base and is connected to a vertically arranged rotating shaft via a coupling. Several horizontal rigid connecting rods are spaced apart on the rotating shaft, and an artificial lure is installed at the end of each rigid connecting rod.

[0011] Fish-attracting lights are installed on the netting of the trap.

[0012] Pufferfish are phototactic, and different species show significant color preferences. Nearshore pufferfish are mainly the yellowfin pufferfish and the dark-spotted pufferfish; the former is easily attracted to blue light, while the latter is more sensitive to green light. Furthermore, as omnivorous fish with a preference for carnivorous foods, pufferfish are highly sensitive to moving objects (artificial lures). Therefore, combining these two characteristics of pufferfish, this device integrates light attraction (visual stimulation) and dynamic artificial lures (motor stimulation) for efficient pufferfish trapping. The large yellow croaker in the rearing tank, on the other hand, is a photophobic fish and will swim away from the device during the trapping process.

[0013] As a preferred embodiment, the trap cage is a cylindrical structure formed by a net and a frame.

[0014] As a preferred embodiment, the lifting device is an electric guide rail vertically installed on the inner wall of the breeding chamber. A connecting plate is installed on the slider of the electric guide rail, and the other end of the connecting plate is connected to the bottom of the base of the trap cage.

[0015] As a preferred embodiment, the fish-attracting light is a waterproof LED light ring, which is horizontally installed in the middle of the trapping cage.

[0016] As a preferred embodiment, the trapping device also includes a water control mechanism for controlling the lifting device, the artificial bait assembly, and the fish-attracting light.

[0017] As a preferred embodiment, the water control mechanism includes a control unit, a display, and a keyboard; wherein the display, keyboard, lifting device, artificial lure assembly, and fish-attracting light are electrically connected to the control unit.

[0018] As a preferred embodiment, the trapping device also includes a power supply component that supplies power to the surface control mechanism, lifting device, artificial bait assembly, and fish-attracting light via a waterproof cable.

[0019] As a preferred option, the power supply component is a marine battery.

[0020] The advantages of this utility model are:

[0021] (1) By using a combination of light and artificial bait, pufferfish in the aquaculture tank can be effectively captured, reducing the harm of pufferfish to large yellow croaker in the aquaculture tank and ensuring the safety of the aquaculture environment.

[0022] (2) Based on the water layer in which the pufferfish moves, the trap can move up and down in different water layers in the breeding chamber and is not affected by the vortex flow in the breeding chamber, which makes it easy to trap the pufferfish.

[0023] (3) The entire device is designed and developed to suit the environmental characteristics of the aquaculture vessel cabin culture mode. It is located on the inner wall of the culture cabin, occupies little space in the cabin, and the trapping method will not affect the large yellow croaker. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of Example 1;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0027] Figure 3 This is a schematic diagram of the working principle of Example 1;

[0028] In the diagram: 1. Aquaculture chamber; 2. Netting; 3. Base; 4. Trapping port; 5. Electric guide rail; 6. Slider; 7. Connecting plate; 8. Drive motor; 9. Shaft; 10. Rigid connecting rod; 11. Artificial bait; 12. Fish attractant light. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example 1:

[0033] like Figures 1-3 As shown, a pufferfish trapping device suitable for aquaculture vessel hold-raising mode is installed on the inner wall of the aquaculture hold 1 of the aquaculture vessel, and includes:

[0034] The trap is a cylindrical structure consisting of a net 2 and a frame. The net 2 is made of ultra-high molecular weight polyethylene or metal and can withstand the bites of pufferfish to prevent escape. A base 3 is set at the bottom of the net 2. The top of the base 3 is used to install the bait assembly, and the bottom of the base 3 is used to connect the lifting device. Several funnel-shaped trap openings 4 are opened on the net 2.

[0035] A lifting device is used to move the trap cage up and down along the inner wall of the aquaculture chamber 1. In one specific embodiment, the lifting device is an electric guide rail 5 vertically installed on the inner wall of the aquaculture chamber 1. A connecting plate 7 is installed on the slider 6 of the electric guide rail 5, and the other end of the connecting plate 7 is connected to the bottom of the base 3 of the trap cage. To facilitate cleaning of the pufferfish inside the trap cage after the trapping operation, the slider 6 and the connecting plate 7, or the connecting plate 7 and the base 3, can be detachably connected. This allows divers to remove the trap cage from the lifting device and then use a crane to lift the trap cage out of the aquaculture chamber 1 for cleaning.

[0036] The artificial lure assembly includes a drive motor 8, a rotating shaft 9, rigid connecting rods 10, and an artificial lure 11. The drive motor 8 is mounted on the top of the base 3 and is connected to the vertically arranged rotating shaft 9 via a coupling. Several horizontally arranged rigid connecting rods 10 are spaced apart on the rotating shaft 9, and an artificial lure 11 is installed at the end of each rigid connecting rod 10. Furthermore, the drive motor 8 is a waterproof low-speed DC motor with an IP68 sealing rating. Considering that pufferfish may be wary of or have difficulty catching fast-moving objects, the speed of the drive motor 8 is set at 5-30 rpm. The artificial lure 11 is a model of prey favored by pufferfish, such as small shrimp, small crabs, and small fish (sardines, small mullet), and is made of durable hard plastic.

[0037] A fish-attracting light 12 is installed on the netting 2 of the trapping cage. In one specific embodiment, the fish-attracting light 12 is a waterproof LED light ring, horizontally installed in the middle of the trapping cage. Furthermore, the LED light ring uses an adjustable color LED module, allowing adjustment of blue light (435-500nm) or green light (500-565nm). The brightness must be sufficient to penetrate the target water depth. Depending on actual needs, it can have a strobe mode (slow flash, fast flash, random flash), as dynamic light is more attractive to pufferfish than constant light. Furthermore, the LED light ring can be fitted with a transparent, impact-resistant protective cover, which can be made of polycarbonate material, to prevent it from being torn by pufferfish or scratched by other parts.

[0038] In one specific embodiment, the trapping device also includes a water control mechanism for controlling the lifting device, the artificial bait assembly, and the fish-attracting light 12.

[0039] In one specific embodiment, the water control mechanism includes a control unit, a display, and a keyboard; wherein the display, keyboard, lifting device, artificial lure assembly, and fish-attracting light 12 are electrically connected to the control unit.

[0040] In one specific embodiment, the trapping device also includes a power supply component, which supplies power to the water control mechanism, lifting device, artificial lure assembly, and fish-attracting light 12 via a waterproof cable. In another specific embodiment, the power supply component is a marine battery.

[0041] The above is a detailed description of this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A pufferfish trapping device suitable for a pufferfish trapping mode of a culture vessel, characterized in that, The pufferfish trapping device is installed on the inner wall of the aquaculture pod of the aquaculture vessel, and includes: The trap cage is a three-dimensional structure consisting of a net and a frame. It has a base at the bottom, the top of which is used to install bait components, and the bottom of which is used to connect a lifting device. The net has several funnel-shaped trap openings. The lifting device is used to move the trap cage up and down along the inner wall of the breeding chamber; The artificial lure assembly includes a drive motor, a rotating shaft, rigid connecting rods, and an artificial lure. The drive motor is mounted on the top of the base and is connected to a vertically arranged rotating shaft via a coupling. Several horizontal rigid connecting rods are spaced apart on the rotating shaft, and an artificial lure is installed at the end of each rigid connecting rod. Fish-attracting lights are installed on the netting of the trap.

2. The puffer fish trapping device for use in a hatch mode of a fish farming vessel according to claim 1, wherein The trap cage is a cylindrical structure formed by a net and a frame.

3. The puffer fish trapping device for use in a hatch mode of a fish farming vessel according to claim 1, wherein The lifting device is an electric guide rail that is vertically installed on the inner wall of the breeding chamber. A connecting plate is installed on the slider of the electric guide rail, and the other end of the connecting plate is connected to the bottom of the base of the trap cage.

4. The puffer fish trapping device for use in a hatch mode of a fish farming vessel according to claim 1, wherein The fish-attracting light is a waterproof LED light ring, which is horizontally installed in the middle of the trap.

5. The puffer fish trapping device for use in a hatch mode of a fish farming vessel according to claim 1, wherein The trapping device also includes a water control mechanism for controlling the lifting device, the artificial bait assembly, and the fish-attracting light.

6. A pufferfish trapping device suitable for use in a hatchery vessel hold culture mode according to claim 5, wherein, The water control mechanism includes a control unit, a display, and a keyboard; wherein the display, keyboard, lifting device, artificial lure assembly, and fish-attracting light are electrically connected to the control unit.

7. A pufferfish trapping device suitable for aquaculture vessel rearing as described in claim 5, characterized in that, The trapping device also includes a power supply component that supplies power to the water control mechanism, lifting device, lure assembly and fish-attracting light via a waterproof cable.

8. A pufferfish trapping device suitable for use in a hatchery vessel hold culture mode according to claim 7, characterised in that, The power supply component is a marine battery.

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