A deep sea lighted continuous pumping trawl device and method

Abstract

The application discloses a deep-sea light trapping continuous pumping fishing device and method, relates to the field of marine fishery, and comprises a sonar detection system, a light trapping system, a negative pressure pumping unit, a flexible conveying system and a control system which are installed on a ship; the sonar detection system comprises a sonar detector; the light trapping system comprises a plurality of fish luring lamps which are thrown to a certain depth underwater; the negative pressure pumping unit comprises a fish suction pump which is installed on the ship; the flexible conveying system comprises a winch which is arranged on the ship, a fish suction hose is wound on the winch, one end of the fish suction hose is connected with the negative pressure pumping unit, and a fish suction protective cover is arranged at one end of the fish suction hose; and the control system comprises a lifting frame which is installed on the ship, a plurality of traction ropes are connected to the lifting frame, and a plurality of lifting winches for controlling the traction ropes to stretch and retract are arranged on the lifting frame. The application can better accurately fish target species, reduce damage and waste of fish, and improve the integrity of the fished fish.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of marine fishery, in particular to a deep-sea light attraction continuous pumping fishing device and method. BACKGROUND

[0002] In recent years, with the decline of offshore fishery resources, deep-sea fishery development has been paid more and more attention. According to the report of the World Ocean Fishery Resources Assessment issued by the Food and Agriculture Organization (FAO) of the United Nations in 2025, only 29% of the global deep-sea fish population is at a sustainable level of fishing, far lower than the 64.5% of offshore fish. Traditional deep-sea fishery mainly relies on active fishing gear such as trawl net and purse seine, which has the problems of high energy consumption, poor selectivity of target fish species, and great damage to the seabed ecological environment. In addition, deep-sea fish usually distributes dispersedly, and the traditional fishing method is low in efficiency and easy to cause the bycatch of juvenile fish and non-target species, which is not conducive to the sustainable utilization of fishery resources.

[0003] Light attraction fishing technology based on the phototaxis characteristics of fish, such as light cover net and light spread net operation, is mainly used for fishing in surface to middle water area (0~60 meters deep), but it relies on manual operation and is difficult to realize automatic and efficient fishing in deep-sea area. The existing deep-sea pumping fishing device is mainly used for mineral or biological sample collection, and lacks an optimized attraction system for fish behavior, and has insufficient continuous fishing capacity.

[0004] Therefore, it is urgent to develop a professional deep-sea fishery fishing device and method to improve the fishing efficiency, reduce the ecological impact, and adapt to the needs of deep-sea fishery development. SUMMARY

[0005] In order to better precisely fish target species, reduce the damage and waste of fish, and improve the integrity of fished fish, the present application provides a deep-sea light attraction continuous pumping fishing device and method.

[0006] This application provides a deep-sea light-attracting continuous pump-suction fishing device and method, which adopts the following technical solution: It includes a sonar detection system, a light-attracting system, a negative pressure pump-suction unit, a flexible conveying system, and a control system installed on a ship; the sonar detection system includes a sonar detector installed on the ship, which is used to detect deep-sea fish schools; the light-attracting system includes multiple attracting lights deployed at a certain depth underwater, which are used to attract fish schools; the negative pressure pump-suction unit includes a fish-suction pump installed on the ship. The system is used to generate negative pressure to extract fish; the flexible conveying system includes a winch installed on the ship, on which a fish suction hose is wound, one end of which is connected to the negative pressure pump unit, and a fish suction protective cover is provided at the end of the fish suction hose away from the negative pressure pump unit; the control system includes a lifting frame installed on the ship, on which multiple traction ropes are connected, and multiple lifting winches are provided on the lifting frame for controlling the extension and retraction of the traction ropes, and the multiple traction ropes are used to adjust the position of the fish suction protective cover and the attracting light.

[0007] By adopting the above technical solution, during fishing, sonar detectors are used to detect fish schools on the seabed, thereby detecting the distribution of fish schools in the target waters, obtaining fish school distribution heat maps, identifying the specific location and quantity of fish schools, and providing accurate data for light-attracting and fishing operations. The attracting lights draw fish schools together, making them easier to pump in later. The fish suction hose can be automatically extended and retracted under the control of a winch to adapt to fishing needs at different depths. Under the negative pressure of the fish suction pump, the fish schools are sucked into the suction hose, thus being drawn onto the vessel to complete the fish harvesting. This design reduces pressure and damage to the fish schools, ensuring effective fishing. Furthermore, it allows for targeted pumping of desired fish schools, reducing the harvesting of other fish species, minimizing waste, and reducing the impact on other fish species in the environment, thus improving environmental protection.

[0008] Preferably, it also includes a fish-water separator installed on a ship, wherein the fish-water separator has a filter chamber, a filter plate is provided in the filter chamber, the filter plate is composed of multiple grid bars, and adjacent grid bars are spaced apart. The filter chamber has an inlet chamber and a drain chamber formed on the upper and lower sides of the filter plate, respectively. The side wall of the fish-water separator has a drain outlet communicating with the drain chamber, and the side wall of the fish-water separator has a fish outlet communicating with the inlet chamber.

[0009] By adopting the above technical solution, when the fish pumped up are put into the feeding chamber, seawater flows directly in through the filter holes, and then flows directly into the sea through the drain outlet, while the fish are discharged through the fish outlet, thus achieving the purpose of separating the fish. This design improves the convenience of fish-water separation.

[0010] Preferably, the filter plate is inclined in the direction close to the fish outlet, and a limiting baffle is provided on the fish-water separation seat to prevent fish from splashing out of the fish-water separation seat.

[0011] By adopting the above technical solution, the inclined filter plate allows for faster separation of fish and water drawn up by the pump. Furthermore, the use of a limiting baffle reduces splashing of fish and water from the separation unit, improving the stability of the fish-water separation process.

[0012] Preferably, there are two bait lights, with the two sets of bait lights respectively located on the upper sides of the fish suction shield. A connecting guide plate is provided between the bait lights and the fish suction shield. The connecting guide plate is inclined outward along the direction of the ship's navigation. The towing rope is connected to the bait lights.

[0013] By adopting the above technical solution, during fishing, the fish suction shield and the lure light are placed together in the deep sea. The symmetrical design of the two connecting guide plates allows the fish suction shield to quickly enter the deep sea and maintain the tightness of the tow rope. Combined with the fish suction hose, the fish suction shield is always positioned forward, improving the stability of pumping fish schools. Pulling one of the tow ropes lifts one of the lure lights upwards, making one of the tilted connecting guide plates vertical. When seawater flows over the connecting guide plate, the movement of the fish suction shield can be controlled, improving the ease of control and enabling more precise pumping. Furthermore, the two connecting guide plates help to gather fish. During fishing, the fish suction shield is usually tilted slightly downwards, which can limit the movement of fish schools and improve the efficiency of pumping fish schools. During use, the fish suction shield generates a large suction force, causing it to move forward. The two connecting guide plates evenly distribute the force of this forward movement, allowing the fish suction shield to stop more precisely and improving the ease of using the pump to suck fish.

[0014] Preferably, a guide plate is provided between the two connecting guide plates, the guide plate is inclined outward in a direction away from the fish suction protective cover, and the guide plate is provided with multiple water passage holes.

[0015] By adopting the above technical solution, the guide plate can guide the fish, making it easier for the fish to be pumped in, improving the efficiency of the pumping operation. In addition, the water passage hole can reduce the resistance of the guide plate in the water, improving the convenience of pumping and catching.

[0016] Preferably, the fish suction cover is provided with an angle adjustment seat, and an angle fixing seat is rotatably connected to the angle adjustment seat. Two connecting guide plates are fixed to the angle fixing seat. Two support rods are rotatably connected to the fish suction cover. A connecting screw is provided at the end of the support rod away from the fish suction cover. Multiple connecting holes are opened on the connecting guide plates to engage with the connecting screws. The connecting screws pass through the connecting holes. A connecting nut is provided on the connecting screws to lock the connecting screws.

[0017] By adopting the above technical solution, the length of the connecting rod support is limited by the cooperation of the connecting screw and nut, so that the connecting guide plate and the fish suction hose can be at a certain angle. When the connecting guide plate is impacted by seawater and shifts backward, the fish suction hose can be lifted upward, so that the fish suction shield can better suck in the fish and improve the convenience of fishing.

[0018] Preferably, it also includes a camera winch mounted on the ship, with an underwater camera connected to the end of the camera winch furthest from the ship.

[0019] By adopting the above technical solutions, underwater cameras allow staff to see the situation of fish schools more clearly, enabling pump suction to catch fish more accurately and improving the convenience of deep-sea fishing by ships.

[0020] Preferably, the bottom of the camera is rotatably connected to a rotating base, and the underwater camera is provided with an adjustment drive for driving the rotating base to rotate. An adjustment hole is provided through the rotating base, and the depth direction of the adjustment hole is the same as the shooting direction of the underwater camera.

[0021] By adopting the above technical solution, when seawater flows through the regulating hole, the shooting direction of the underwater camera can be limited, improving the stability of the underwater camera's shooting. When it is necessary to adjust the deflection angle of the underwater camera, the rotating seat can be rotated by adjusting the driving component, thereby making it easier for the underwater camera to shoot.

[0022] A deep-sea light-attracting continuous pump suction fishing method includes the following specific steps:

[0023] S1, Inspection and Detection: Use a sonar detector to obtain a heat map of the depth distribution of the target fish school;

[0024] S2, Attraction and Trapping: Control the trapping light to start flashing at the target depth layer to attract fish;

[0025] S3, Pumping Fish School: When the density of the fish school reaches a set threshold, the fish pump is activated to pump the fish school.

[0026] S4, Real-time Adjustment: Adjusts the position of the fish suction shield according to the real-time position of the fish school, and extracts the area with higher fish density.

[0027] S5, Fish-water separation: The fish suction pump draws fish and water into the feed chamber, the seawater is discharged from the drain outlet, and the fish are discharged through the fish outlet.

[0028] By adopting the above technical solutions, sonar detectors are used to locate fish schools, and high-intensity light sources are used to simulate the behavioral characteristics of deep-sea organisms to attract fish to gather. The fish suction hose can be automatically extended and retracted under the control of a winch to adapt to the fishing needs at different depths. Under negative pressure, the fish are sucked into the fish suction hose. The design of the fish suction pump can maintain stable suction and pressure in the deep-sea environment, ensuring the continuity and stability of the fishing operation. This solves the problems of poor selectivity and high damage rate of traditional trawl fishing, realizes the sustainable and efficient development of deep-sea fishery resources, effectively improves fishing efficiency, and reduces the fish damage rate.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. During fishing, sonar detectors are used to detect fish schools on the seabed, thereby detecting the distribution of fish in the target waters, obtaining a fish distribution heat map, identifying the specific location and quantity of fish schools, and providing accurate data for light-attracting and fishing operations. The attracting lights draw the fish schools together, making them easier to pump in later. The fish suction hose can be automatically extended and retracted under the control of a winch to adapt to fishing needs at different depths. Under the negative pressure of the fish suction pump, the fish are sucked into the suction hose, thus drawing the fish onto the vessel to complete the fishing operation. This design reduces pressure and damage to the fish schools, ensuring effective fishing. Furthermore, it allows for targeted pumping of the desired fish schools, reducing the harvesting of other fish species, minimizing waste, and minimizing the impact on other fish species in the environment, thus improving environmental protection.

[0031] 2. During fishing, the fish suction shield and the lure light are placed together in the deep sea. The symmetrical design of the two connecting guide plates allows the fish suction shield to quickly enter the deep sea and maintain the tightness of the tow rope. Combined with the fish suction hose, the fish suction shield is always positioned forward, improving the stability of pumping fish schools. Pulling one of the tow ropes will lift one of the lure lights upwards, making one of the tilted connecting guide plates vertical. When seawater flows over the connecting guide plate, it can control the movement of the fish suction shield, improving its ease of control and enabling more precise pumping. Furthermore, the two connecting guide plates help to gather fish. During fishing, the fish suction shield is usually tilted slightly downwards to limit the movement of fish schools, improving the efficiency of pumping fish schools. During use, the fish suction shield generates a large suction force, causing it to move forward. The two connecting guide plates evenly distribute this forward force, allowing the fish suction shield to stop more precisely and improving the ease of using the pump to suck fish.

[0032] 3. By using sonar detectors to locate fish schools and employing high-intensity light sources to simulate the behavioral characteristics of deep-sea organisms, fish are attracted to gather. The fish suction hose can be automatically extended and retracted under the control of a winch to adapt to fishing needs at different depths. Under negative pressure, the fish are sucked into the suction hose. The design of the fish suction pump can maintain stable suction and pressure in the deep-sea environment, ensuring the continuity and stability of fishing operations. This solves the problems of poor selectivity and high damage rate in traditional trawl fishing, realizing the sustainable and efficient development of deep-sea fishery resources, effectively improving fishing efficiency, and reducing fish injury rates. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a deep-sea light-attracting continuous pump suction fishing device according to Embodiment 1 of this application;

[0034] Figure 2 This is a schematic diagram illustrating the winch structure, as shown in Embodiment 1 of this application.

[0035] Figure 3 The above diagram shows a deep-sea light-attracting continuous pump suction fishing device according to Embodiment 1 of this application;

[0036] Figure 4 This is a schematic diagram illustrating the structure of the underwater camera, as shown in Embodiment 1 of this application.

[0037] Figure 5 This is a schematic diagram illustrating the fish-water separation seat structure, as shown in Embodiment 1 of this application.

[0038] Figure 6 This is a schematic diagram illustrating the fish-absorbing protective cover structure, which is the main feature of Embodiment 1 of this application.

[0039] Figure 7 This is a schematic diagram illustrating the main connecting guide plate structure of Embodiment 1 of this application;

[0040] Figure 8 This is a schematic diagram illustrating the structure of the trapping lamp in Embodiment 1 of this application;

[0041] Reference numerals: 1. Sonar detector; 2. Towing rope; 3. Lure light; 4. Fish suction cover; 5. Fish suction hose; 6. Rotating base; 7. Underwater camera; 8. Central control cabinet; 9. Winch; 91. Drum; 92. Frame; 93. Drive motor; 94. Tension sensor; 95. Rotary joint; 96. Connecting hose; 10. Fish suction pump; 11. Lifting frame; 12. Lifting winch; 14. Fish-water separation base; 15. Adjustment drive component; 16. Adjustment... 17. Filter plate; 18. Feed chamber; 19. Grille bar; 20. Limiting baffle; 21. Fish outlet; 22. Drain outlet; 23. Drain chamber; 24. Connecting guide plate; 25. Connecting hole; 26. Nut; 27. Connecting screw; 28. Inclined fixing seat; 29. ​​Inclined adjusting seat; 30. Support rod; 31. Guide plate; 32. Water passage hole; 33. Lamp holder; 34. Lamp body; 35. Connecting rotating seat; 36. Drainage cone surface; 37. Camera winch. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1 - Figure 8 This application will be described in further detail.

[0043] This application discloses a deep-sea light-attracting continuous pump suction fishing device and method.

[0044] Example 1

[0045] Reference Figure 1 A deep-sea light-attracting continuous pump-suction fishing device includes a sonar detection system, a light-attracting system, a negative pressure pump-suction unit, a flexible conveying system, a control system, a fish-water separation seat 14, and a central control cabinet 8, all installed on a ship.

[0046] The sonar detection system includes a sonar detector 1 installed on the bottom of the ship. The sonar detector 1 detects the distribution of fish in the target waters by emitting sound wave signals and receiving echo signals, obtains a heat map of fish distribution, identifies the specific location and number of fish, and provides accurate data for light-attracting and fishing operations.

[0047] The light-attracting system includes two attracting lights 3 deployed at a certain depth underwater, which are used to attract fish.

[0048] The negative pressure pump suction unit includes a fish suction pump 10 installed on the ship. The fish suction pump 10 is a centrifugal fish suction pump with variable frequency control. The pump suction flow rate is adjustable and can be adjusted according to the number of fish.

[0049] The flexible conveying system includes a winch 9 mounted on the ship. The winch 9 consists of a frame 92, a drum 91 rotatably connected to the frame 92, and a drive motor 93 that drives the winch 91 to rotate. A receiving groove is formed on the outer wall of the winch 91, and a fish suction hose 5 is wound around the receiving groove. One end of the fish suction hose 5 extends from the center of the winch 91, and a rotary joint 95 is connected to the fish suction hose 5. A connecting hose 96, connected to a fish suction pump 10, is provided at the end of the rotary joint 95 away from the fish suction hose 5, allowing for easier connection between the fish suction hose 5 and the fish suction pump 10. A tension sensor 94 is installed on the winch 9 to detect the tension on the fish suction hose 5, and the length of the fish suction hose 5 is adjusted in real time according to the tension value. The winch 9 is equipped with an absolute encoder with a positioning accuracy of ±0.2m, achieving depth adaptive control. A fish suction shield 4 is installed at the end of the fish suction hose 5 furthest from the fish suction pump 10. The fish suction shield 4 has a gradually opening trumpet-shaped structure, with the inlet diameter increased to 1.5 to 2 times that of the hose. This reduces the inlet water flow rate and minimizes stress on fish as they pass through. A grid pattern is installed at the end of the fish suction shield 4 furthest from the hose to filter fish by size, automatically rejecting fish of non-target sizes.

[0050] The control system includes a lifting frame 11 installed on the ship, with two traction ropes 2 connected to the lifting frame 11. A lifting winch 12 for controlling the extension and retraction of the telescopic ropes is fixed on the lifting frame 11. The two traction ropes 2 are used to adjust the position of the fish suction protective cover 4 and the bait light 3, so that the fish can be pumped more accurately in areas with high fish density, thereby improving the efficiency of fishing.

[0051] The fish-water separator 14 has a filter chamber, which is rectangular in shape. A filter plate 17 is fixed inside the filter chamber, and the filter plate 17 is composed of multiple grid bars 19 spaced apart from each other. The filter chamber has an inlet chamber 18 and a drain chamber 23 formed on the upper and lower sides of the filter plate 17, respectively. A drain outlet 22 communicating with the drain chamber 23 is provided on the side wall of the fish-water separator 14, and a fish outlet 21 communicating with the inlet chamber 18 is provided on the other side wall of the fish-water separator 14, thus facilitating the separation of fish from seawater. The filter plate 17 is inclined towards the fish outlet 21, allowing for easier discharge of fish. A limiting baffle 20 is provided on the fish-water separator 14. The limiting baffle 20 has an arc-shaped design and is used to prevent fish from splashing out of the fish-water separator 14.

[0052] Two lure lights 3 are installed on the upper sides of the fish suction shield 4, forming a triangular structure. Connecting guide plates 24 are installed between the lure lights 3 and the fish suction shield 4, tilted outwards along the ship's direction of travel. The two connecting guide plates 24 have a diffused design. Two towing ropes 2 are connected to the lure lights 3, allowing them to be pulled. When one lure light 3 rises, it verticalizes one of the tilted connecting guide plates 24. As seawater flows through the connecting guide plate 24, it controls the movement of the fish suction shield 4, improving its ease of control and enabling more precise suction. A guide plate 31 is fixed between the two connecting guide plates 24, tilted outwards away from the fish suction shield 4. Multiple water passage holes 32 are provided on the guide plate 31 to reduce pulling resistance and improve the ease of use of the device.

[0053] The trapping light 3 consists of a lamp base 33 and a lamp body 34. The lamp body 34 contains multiple independently controllable LED light arrays, which can adjust the spectrum according to sonar detection data. The traction rope 2 and the connecting guide plate 24 are fixed to the upper and lower sides of the lamp base 33, respectively. A connecting rotating seat 35 is fixed on the lamp base 33, and the lamp body 34 is rotatably connected to the connecting rotating seat 35. A flow-guiding cone surface 36 is formed on the side of the lamp body 34 away from the connecting rotating seat 35. The width of the lamp body 34 gradually decreases along the direction close to the connecting rotating seat 35. The flow-guiding cone surface 36 allows the lamp body 34 to always face forward under the action of seawater, thereby minimizing the change in the illumination direction of the lamp body 34 and making it easier for staff to observe the fish school in front.

[0054] An angle adjustment seat 29 is fixed to the fish suction shield 4. An angle fixing seat 28 is rotatably connected to the angle adjustment seat 29. Two connecting guide plates 24 are fixed to the angle fixing seat 28. Two support rods 30 are rotatably connected to the fish suction shield 4. A connecting screw 27 is integrally formed at the end of the support rod 30 away from the fish suction shield 4. The diameter of the connecting screw 27 is smaller than the diameter of the support rod 30. Multiple connecting holes 25 are opened on the connecting guide plates 24 to engage with the connecting screw 27. A nut 26 is threadedly connected to the connecting screw 27 to lock the connecting guide plate 24. According to the calculated ocean current vector, the angle between the fish suction hose 5 and the horizontal plane is 30 degrees, so that the height of the fish suction hose 5 is gradually raised, allowing the fish and water to be pumped more smoothly.

[0055] The vessel is also equipped with a camera winch 37, with an underwater camera 7 connected to the end of the winch 37 furthest from the vessel. A rotating base 6 is rotatably connected to the bottom of the underwater camera 7. An adjustment drive 15 is mounted on the underwater camera 7 to drive the rotating base 6. An adjustment hole 16, a cylindrical hole, is formed through the rotating base 6, with its depth aligned with the shooting direction of the underwater camera 7. When seawater flows through the adjustment hole 16, it limits the shooting direction of the underwater camera 7, improving its shooting stability. When the deflection angle of the underwater camera 7 needs adjustment, the rotating base 6 is rotated by adjusting the drive 15, allowing the underwater camera 7 to shoot more easily.

[0056] The central control cabinet 8 contains multiple control switches, which are electrically connected to multiple winches, trap lights 3, and drive motors 93. This allows for the control of multiple devices, thus facilitating more convenient automated operation.

[0057] Example 2

[0058] A deep-sea light-attracting continuous pump-suction fishing method includes the following steps:

[0059] S1, Inspection and Detection: By emitting sound wave signals and receiving echo signals, the distribution of fish in the target water area is detected, and a fish distribution heat map is obtained;

[0060] S2, Attraction and Trapping: Control the trapping light 3 to start flashing at the target depth layer, and dynamically adjust the position of the underwater light-attracting device to attract fish.

[0061] S3, Pumping fish: When the density of the fish school reaches a set threshold, the fish pump 10 is activated to pump the fish school.

[0062] S4, Real-time adjustment: Adjust the position of the fish suction shield 4 according to the real-time position of the fish school, and extract the area with higher fish density.

[0063] S5, Fish-water separation: The fish pump 10 draws fish and water into the feed chamber 18, the seawater is discharged from the drain outlet 22, and the fish are discharged through the fish outlet 21.

[0064] The advantages of this embodiment are as follows: First, through the synergistic effect of sonar detection, light attraction, and pump suction delivery, fish schools can be accurately located and quickly caught, making the device highly efficient; second, compared with traditional fishing methods, the intelligent image recognition system only pumps the target fish school, reducing bycatch and damage to the marine ecosystem, which is conducive to the sustainable development of deep-sea fisheries; finally, the lifting frame 11, together with two towing ropes 2 and two connecting guide plates 24, can more conveniently adjust the position of the pump suction, improving the efficiency of pumping fish schools.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A deep-sea light-attracting continuous pump-suction fishing device, characterized in that: This includes sonar detection systems, light-attracting systems, negative pressure pump suction units, flexible conveying systems, and control systems installed on ships; The sonar detection system includes a sonar detector (1) installed on the ship, which is used to detect schools of fish in the deep sea; The light-attracting system includes multiple attracting lights (3) deployed at a certain depth underwater, which are used to attract fish. The negative pressure pump suction unit includes a fish suction pump (10) installed on the ship, which is used to suck up fish swarms by negative pressure; The flexible conveying system includes a winch (9) installed on the ship, on which a fish suction hose (5) is wound. One end of the fish suction hose (5) is connected to the negative pressure pump suction unit, and a fish suction protective cover (4) is provided at the end of the fish suction hose (5) away from the negative pressure pump suction unit. The control system includes a lifting frame (11) installed on the vessel, on which multiple traction ropes (2) are connected. Multiple lifting winches (12) for controlling the extension and retraction of the traction ropes (2) are installed on the lifting frame (11). The multiple traction ropes (2) are used to adjust the position of the fish-attracting protective cover (4) and the attracting light (3). It also includes a fish-water separation seat (14) installed on the vessel, on which a filter chamber is provided. A filter plate (17) is provided inside the filter chamber. The filter plate (17) is composed of multiple grid bars (19), with adjacent grid bars (19) spaced apart. The filter chamber has an inlet chamber (18) and a drain chamber (23) formed on the upper and lower sides of the filter plate (17), respectively. The side wall of the fish-water separation seat (14) has a drain outlet (22) that communicates with the drain chamber (23), and the side wall of the fish-water separation seat (14) has a fish outlet (21) that communicates with the inlet chamber (18). The filter plate (17) is inclined along the direction close to the fish outlet (21). The fish-water separation seat (14) is provided with a limiting baffle (20) to prevent fish from splashing out of the fish-water separation seat (14). There are two trap lights (3). The lure lights (3) are respectively set on the upper sides of the fish suction shield (4). A connecting guide plate (24) is provided between the lure lights (3) and the fish suction shield (4). The connecting guide plate (24) is inclined outward along the direction of the ship's sailing. The towing rope (2) is connected to the lure lights (3). A guide plate (31) is provided between the two connecting guide plates (24). The guide plate (31) is inclined outward in the direction away from the fish suction shield (4). The guide plate (31) has multiple water passage holes (32). The fish suction shield (4) is provided with an angle adjustment seat (29). An inclined fixing seat (28) is rotatably connected to the base (29). Two connecting guide plates (24) are fixed to the inclined fixing seat (28). Two support rods (30) are rotatably connected to the fish suction protective cover (4). A connecting screw (27) is provided at the end of the support rod (30) away from the fish suction protective cover (4). A plurality of connecting holes (25) are provided on the connecting guide plate (24) to be inserted and matched with the connecting screw (27). The connecting screw (27) passes through the connecting hole (25). A connecting nut (26) is provided on the connecting screw (27). The nut (26) is used to lock the connecting screw (27).

2. The deep-sea light-attracting continuous pump-suction fishing device according to claim 1, characterized in that: It also includes a camera winch (37) installed on the ship, with an underwater camera (7) connected to the end of the camera winch (37) away from the ship.

3. The deep-sea light-attracting continuous pump-suction fishing device according to claim 2, characterized in that: The underwater camera (7) is rotatably connected to a rotating base (6) at its bottom. The underwater camera (7) is provided with an adjustment drive (15) for driving the rotating base (6) to rotate. An adjustment hole (16) is provided through the rotating base (6). The depth direction of the adjustment hole (16) is the same as the shooting direction of the underwater camera (7).

4. A deep-sea light-attracting continuous pump-suction fishing method, employing a deep-sea light-attracting continuous pump-suction fishing device as described in any one of claims 1-3, characterized in that, The specific steps are as follows: S1, Inspection and Detection: Use a sonar detector (1) to obtain a heat map of the depth distribution of the target fish population; S2, Attracting and trapping: Control the trapping light (3) to start flashing at the target depth layer to attract fish; S3, Pumping fish: When the density of the fish population reaches the set threshold, start the fish pump (10) to pump the fish. S4, Real-time adjustment: Adjust the position of the fish suction shield (4) according to the real-time position of the fish school, and extract the position with higher fish density. S5, fish-water separation: the fish pump (10) draws fish and water into the feed chamber (18), the seawater is discharged from the drain (22), and the fish are discharged through the fish outlet (21).

Images