Euphausia superba continuous non-clogging pumping device

Abstract

The application discloses a continuously non-clogging pumping device for Antarctic krill, and relates to the technical field of ocean measurement. The device comprises a trawl dragged by a ship, and a pumping assembly is arranged at the tail end of the trawl. The pumping assembly comprises a net tail supporting cavity, a first pipe body is connected to one side of the net tail supporting cavity, a floating base is connected to the other end of the first pipe body, a second pipe body is arranged on one side of the floating base, and the second pipe body is connected with a pump body on the ship. The floating base is used for realizing suction of the first pipe body and temporary storage of the catch. The application aims to provide a continuously non-clogging pumping device for Antarctic krill, which has high fishing efficiency and high fishing quality.

Description

Technical Field

[0001] This invention belongs to the field of Antarctic krill harvesting technology, specifically relating to a continuous, non-clogging pump suction device for Antarctic krill. Background Technology

[0002] Global marine fisheries resources are generally declining. Antarctic krill, a marine species whose cultivation in the Antarctic Sea has only recently begun, boasts abundant reserves, and its nutritional value and market potential are gradually being developed. Statistics conservatively estimate that Antarctic krill reserves could reach 2.5 × 10⁸ to 6 × 10⁸ tons, roughly equivalent to the current total global fisheries production. Given the increasing depletion of fisheries resources and the vigorous development of marine fisheries economies by various countries, the development of Antarctic krill resources is of paramount importance.

[0003] In Antarctic krill trawling operations, fishing pumps are commonly used to improve fishing efficiency. However, during actual operations, it is common for bycatch (fish, and occasionally seabirds) and krill to clog the pump suction device. This phenomenon affects fishing efficiency and causes a decline in the quality of the catch.

[0004] Existing technology, such as the invention patent titled "Sustainable Antarctic Krill Harvesting Auxiliary System and its Pump Suction Device," with publication number CN105393999A, involves a shrimp trawl net mounted on the side of the vessel. A pump suction device is installed at the stern of the trawl net's spool section. This pump suction device is connected to a hose reel at the stern, which in turn is connected to a shrimp-water separator. The pump suction device is hydraulically powered by a pump station at the stern. The device includes a shrimp suction pump, the suction inlet of which is fitted with a pump spool net interface. This interface is evenly connected to the spool net via multiple evenly distributed fasteners, ensuring uniform absorption of the spool net's tension. A float is fixedly connected around the pump, providing buoyancy. Combined with a hoisting device, this allows the pump suction device to operate at any underwater depth. However, this invention cannot achieve multi-stage suction, resulting in a harvest quality that falls short of expectations.

[0005] Existing technology, such as the invention patent titled "A Trawl-Based Auxiliary Conveying Device for Continuous Trawl Fishing of Antarctic Krill" (publication number WO2021237956A1), includes a pump-suction inner tube connected to the tail end of the net, an outer casing, a water-dragging power drive mechanism, a gearbox, and a user-friendly spiral conveyor. The pump-suction inner tube is located inside the outer casing and extends out from inside the outer casing. The user-friendly spiral conveyor is rotatably mounted inside the pump-suction inner tube. The water-dragging power drive mechanism is located behind the outer casing. The first drive shaft of the water-dragging power drive mechanism is connected to the input end of a transmission box, and the output end of the transmission box is connected to the user-friendly spiral conveyor via a second drive shaft, driving the user-friendly spiral conveyor to rotate through the water-dragging power drive mechanism. This device can assist in the continuous pump-suction fishing system for auxiliary transport of catches, effectively preventing blockages and ensuring the continuity of pump-suction transfer of catches. However, this invention cannot achieve multi-stage suction, and the catch quality does not meet expectations. Summary of the Invention

[0006] The purpose of this invention is to provide a continuous, non-clogging pump suction device for Antarctic krill with high fishing efficiency and high catch quality.

[0007] The technical solution adopted by the present invention to achieve the above objectives is as follows:

[0008] An Antarctic krill continuous non-clogging pump suction device includes a trawl net towed by a ship, a pump suction assembly connected to the tail end of the trawl net, the pump suction assembly including a tail support cavity, a first pipe body connected to one side of the tail support cavity, a floating base connected to the other end of the first pipe body, a second pipe body connected to one side of the floating base, and a second hull connected to a pump body on the ship.

[0009] The floating substrate is used to achieve suction in the first tube and temporary storage of the catch.

[0010] By configuring a continuous, non-clogging pump suction device for Antarctic krill, the caught fish enters the net bag during the trawl process. A net tail support cavity is located at the tail end of the net, providing support for the tail of the net and increasing the speed and efficiency of fish entering the cavity. This also reduces the possibility of the net tail folding or clumping, and prevents the net from contracting due to large water inflows, further preventing folding or clumping. This improves the efficiency of fish suction and reduces the capture of juvenile fish escaping from the net. After entering the net tail support cavity, the fish is drawn into a floating base by the first pipe and temporarily stored until it is drawn onto the ship through the second pipe. In this process, a two-stage suction is achieved through the floating base. The floating base enables the suction of the first tube and the temporary storage of the catch, avoiding the need to extract the catch from the net tail support cavity onto the vessel all at once. This reduces the suction force of the pump on the vessel, thus preventing damage or death of the catch due to excessive suction. In addition, the temporary storage of the catch on the floating base allows for ventilation of the catch during the long-distance suction of the second tube, further reducing the damage or mortality rate of the catch.

[0011] According to an embodiment of the present invention, the floating substrate includes floating substrates arranged vertically opposite each other, and a mesh box is provided on opposite sides of the two floating substrates. A three-way pipe is provided inside the mesh box. The three-way pipe includes a first pipe and a second pipe. One end of the second pipe is vertically connected to the middle of the first pipe. The other end of the second pipe passes through a floating substrate and is connected to a first pump body. One end of the first pipe is coaxially connected to the first pipe body. A sorting component is provided at the other end of the first pipe.

[0012] One end of the second tube penetrates the floating substrate into the cage.

[0013] Through the above design, the three-way pipe and the first pump body enable the non-damaging suction of fish located in the support cavity at the tail of the net, preventing damage to the fish during suction. Specifically, one end of the first pipe in the three-way pipe is coaxially connected to the first pipe body, while the other end is located inside the net cage and equipped with a sorting component. The fish enters the first pipe body and then the first pipe, eventually entering the net cage. After receiving the fish, the net cage is opened, releasing the fish into the cage where it will temporarily move. The net cage design facilitates the escape of juvenile organisms, reducing the likelihood of them being sucked onto the vessel. This design improves the survival rate of fish and maintains the marine ecosystem. Furthermore, the floating substrate is connected to the trawl and the tail support cavity via the first tube, which prevents juvenile organisms escaping from the net cage from re-entering the trawl. The net cage design increases the residence time of the catch within the floating substrate and the capacity of the floating substrate, thus extending the time for juveniles to escape. In addition, as the vessel moves and fishes, the trawl moves along with it, and the floating substrate moves accordingly. This results in external water impact and water exchange within the net cage, which in turn improves the survival rate of the catch and the speed at which juveniles escape under the impact of the water.

[0014] According to one embodiment of the present invention, the cage is provided with a partition fence on the side closest to the ship.

[0015] As the vessel moves and fishes, the trawl net moves along with it, and consequently the floating substrate moves as well. At this time, water impacts and enters the net cages, and the catch inside the net cages is impacted by the water from the front and pushed into the net cages away from the vessel. Small organisms will escape into the net cages away from the vessel due to the impact of the water, while larger organisms, such as big fish, sea turtles, and seabirds, which are not the target organisms, have greater strength and will escape through the separating fences. Thus, the floating substrate can facilitate the release of juveniles and non-target organisms.

[0016] According to one embodiment of the present invention, the sorting component includes at least two steel rings spaced apart, a first connecting rod is arranged around the outside of the steel rings, a brush is provided on the first connecting rod, an auxiliary shaft is coaxially arranged inside the steel rings, and a plurality of flexible strips are arranged around the steel rings inward, with the other end of the flexible strips connected to the auxiliary rod.

[0017] The above design of the sorting component enables the sorting of fish. Specifically, when the fish is discharged from the first through-pipe, it is guided by the direction formed by the flexible strips and discharged in all directions, preventing the fish from being concentrated and discharged towards the flexible blades. This avoids the squeezing force during the discharge of the fish and reduces the mortality of the fish. The steel ring is used to restrict the flexible strips and prevent them from being stretched or bent during the sorting of fish.

[0018] According to one embodiment of the present invention, a connecting sleeve is provided at one end of the sorting component, one end of the connecting sleeve is sleeved on the outside of a plurality of first connecting rods, the other end of the connecting sleeve is sleeved on the inside of a first through pipe, and a flexible blade is provided at the end of the auxiliary rod away from the first through pipe.

[0019] By incorporating a connecting sleeve, when the catch is discharged from the first pipe to the sorting assembly, it carries a large amount of water. At this time, the flexible blades drive the sorting assembly to rotate, and multiple first connecting rods rotate around the auxiliary rod. Their brushes follow the rotation, which in turn causes the catch inside the net cage to move. This movement of the catch increases the mobility of organisms inside the net cage, helping juveniles to escape quickly and encouraging large fish to escape through the separating fence. In addition, the rotation of the sorting assembly is also affected by the surrounding catch. The deformation and recovery of the catch caused by the catch causes vibrations that transmit the vibration force to the three-way pipe. This vibration force shakes off the catch sucked by the first pump body, thus preventing blockage of the three-way pipe opening.

[0020] According to one embodiment of the present invention, the top side of the net tail support cavity is connected to a first tube, and the first tube is bent toward the direction of the ship;

[0021] A first support assembly is provided on the bottom side of the floating substrate near the tail support cavity. The first support assembly includes at least one first support rod. One end of the first support rod is hinged to the floating substrate. The first support rod is positioned toward the tail support cavity. A spring is coaxially extended and fixed at the other end of the first support rod. An elastic element is provided at the end of the spring. The elastic element has a spaced distance from or abuts against the first tube.

[0022] Through the above design, the first support component ensures an effective distance between the floating substrate and the tail support cavity, preventing the floating substrate from getting too close to the trawl and interfering with the suction operation of the first pump. Furthermore, the floating substrate and the tail support cavity are adjusted automatically based on water movement, causing displacement and contact between the elastic element and spring, and the trawl itself. This allows for automatic adjustment of the distance between the floating component and the trawl according to water fluctuations and the weight of the organisms inside the floating component. During the deformation of the spring and elastic element, the contact between the elastic element and the first tube controls the distance and also helps generate sound, prompting the organisms inside the first tube to move quickly and preventing them from lingering near the trawl and causing blockages.

[0023] According to one embodiment of the present invention, a plurality of buoy balls are provided at the connection between the tail support cavity and the trawl net, and a guide plate is provided on the side of the first tube away from the ship.

[0024] Through the above design, the first tube has lower resistance during ship navigation, which is beneficial to the ship's navigation. In addition, multiple float balls are installed at the connection between the tail support cavity and the trawl net, which can provide buoyancy at the connection between the tail support cavity and the trawl net, preventing the tail of the net from sinking due to the weight of the tail support cavity, and improving the trawl net's catch efficiency. Furthermore, the design of multiple float balls can further reduce the depth of the floating base in the water, thereby improving the visibility of the floating base. This allows the floating base to be used to roughly determine the location of the trawl net and to provide appropriate buoyancy for the net bag. Attached Figure Description

[0025] Figure 1 A schematic diagram of a continuous, non-clogging pump suction device for Antarctic krill combined with a ship;

[0026] Figure 2 This is a three-dimensional schematic diagram of the pump suction assembly;

[0027] Figure 3 This is a side view of the pump suction assembly;

[0028] Figure 4 This is a cross-sectional view of the pump suction assembly during testing.

[0029] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0030] Figure 6 This is a three-dimensional schematic diagram of the floating substrate;

[0031] Figure 7 This is a side view of the sorting components;

[0032] Figure 8 This is a three-dimensional schematic diagram of the sorting components;

[0033] Figure 9 This is a three-dimensional schematic diagram of the first support rod.

[0034] Reference numerals: 1. Vessel; 2. Trawl net; 3. Pump suction assembly; 31. Tail support cavity; 311. Float ball; 32. First pipe body; 321. Guide plate; 33. First pipe body; 4. Second pipe body; 41. Floating base; 42. Net cage; 421. Separating fence; 431. First through pipe; 432. Second through pipe; 433. First pump body; 5. Sorting assembly; 51. Steel ring; 52. First connecting rod; 53. Brush; 54. Auxiliary shaft; 55. Flexible strip; 56. Flexible blade; 6. Connecting sleeve; 7. First support assembly; 71. First support rod; 72. Spring; 73. Elastic element. Detailed Implementation

[0035] The technical solution of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings:

[0036] Example 1:

[0037] like Figure 1 , 2 As shown in 3, 4, 5, 6, 7, 8, and 9, the Antarctic krill continuous non-clogging pump suction device includes a trawl net 2 towed by a vessel 1. The tail end of the trawl net 2 is connected to a pump suction assembly 3. The pump suction assembly 3 includes a tail support cavity 31. One side of the tail support cavity 31 is connected to a first pipe body 32. The other end of the first pipe body 32 is connected to a floating base 4. One side of the floating base 4 is connected to a second pipe body 33. The second hull is connected to the pump body on the vessel 1.

[0038] The floating substrate 4 is used to achieve the suction of the first tube 32 and the temporary storage of the catch.

[0039] By configuring the continuous, non-clogging pump suction device for Antarctic krill, during the towing of trawl net 2 by vessel 1, the caught fish will enter the net bag of trawl net 2. A net tail support cavity 31 is connected to the tail end of trawl net 2. The net tail support cavity 31 can support the tail of the net body and provide spatial support for the tail of trawl net 2. This can improve the speed and efficiency of the fish entering the net tail support cavity 31, while reducing the possibility of the tail of trawl net 2 folding and clumping. Furthermore, the net tail support cavity 31 can prevent the trawl net 2 from shrinking inward due to large water inflow, further preventing the possibility of the tail of trawl net 2 folding or clumping. This can improve the efficiency of fish being sucked in and reduce the capture of fish larvae that escape from trawl net 2. After the fish enters the net tail support cavity 31, it will be drawn into the floating base 4 by the first tube 32 and temporarily stored until it is drawn onto vessel 1 through the second tube 33. In this process, the floating base 4 enables two-stage suction, that is, the first tube 32 is used for suction and temporary storage of the catch. This avoids the catch in the net tail support cavity 31 being drawn onto the vessel 1 all at once, which reduces the suction force of the pump on the vessel 1 and prevents the catch from being damaged or killed due to excessive suction force. In addition, the catch can be temporarily stored on the floating base 4, which allows the catch to be ventilated for long-distance suction in the second tube 33, thereby further reducing the damage rate or mortality rate of the catch.

[0040] The floating substrate 4 includes floating substrates 41 arranged vertically opposite each other. A mesh box 42 is provided on opposite sides of the two floating substrates 41. A three-way pipe 43 is provided inside the mesh box 42. The three-way pipe 43 includes a first pipe 431 and a second pipe 432. One end of the second pipe 432 is vertically connected to the middle of the first pipe 431. The other end of the second pipe 432 passes through a floating substrate 41 and is connected to the first pump body 433. One end of the first pipe 431 is coaxially connected to the first pipe body 32. The other end of the first pipe 431 is provided with a sorting component 5.

[0041] One end of the second tube 33 passes through the floating substrate 41 into the cage 42.

[0042] Through the above design, the three-way pipe 43 and the first pump body 433 can achieve non-damaging suction of the catch located in the net tail support cavity 31, preventing damage to the catch during suction. Specifically, one end of the first pipe 431 in the three-way pipe 43 is coaxially connected to the first pipe body 32, and the other end is located inside the net cage 42 and equipped with a sorting component 5. The catch enters the first pipe 431 through the first pipe body 32 and then enters the net cage 42. After receiving the catch, the net cage 42 is opened, releasing the catch into the net cage 42, where it will temporarily move. The design of the net cage 42 can facilitate the escape of juvenile organisms and reduce the risk of juvenile organisms being sucked in. The probability of reaching the vessel 1 is increased, thus maintaining the marine ecosystem. In addition, the floating base 4 is connected to the trawl 2 and the tail support cavity 31 on one side through the first tube 32, which can prevent juvenile organisms that escape from the net cage 42 from re-entering the trawl 2. The setting of the net cage 42 can increase the residence time of the catch in the floating base 4 and the capacity of the floating base 4, thus prolonging the time for juveniles to escape. In addition, during the movement of the vessel 1 and the fishing, the trawl 2 will move with it, and the floating base 4 will also move with it. Thus, the net cage 42 has external water impact and water replacement, which can improve the survival rate of the catch and the speed at which juveniles escape under the impact of water.

[0043] Furthermore, the floating substrate 41 has the ability to float.

[0044] The cage 42 is equipped with a partition fence 421 on the side closest to the ship 1.

[0045] As vessel 1 moves and fishes, trawl net 2 moves along with it, and consequently, floating substrate 4 also moves. At this time, water will impact and enter the net cage 42. The catch in net cage 42 will be impacted by the water from the front and moved to the side of net cage 42 away from vessel 1. Small organisms will escape from the side of net cage 42 away from vessel 1 under the impact of the water. Larger organisms, such as big fish, sea turtles, and seabirds, which are non-target organisms, have greater strength and will escape through the separating fence 421. Thus, floating substrate 4 can release juveniles and non-target organisms.

[0046] The sorting assembly 5 includes at least two steel rings 51 spaced apart. A first connecting rod 52 is arranged around the outside of the steel rings 51. A brush 53 is provided on the first connecting rod 52. An auxiliary shaft 54 ​​is coaxially arranged inside the steel rings 51. A plurality of flexible strips 55 are arranged around the steel rings 51 inward. The other end of the flexible strips 55 is connected to the auxiliary shaft 54.

[0047] The above design of the sorting component 5 enables the sorting of fish. Specifically, when the fish is discharged from the first through pipe 431, it is guided by the direction formed by the flexible strip 55 and discharged in all directions, avoiding the fish from being concentrated and discharged towards the flexible blade 56. This avoids the squeezing force when the fish is discharged and reduces the mortality of the fish. The steel ring 51 is used to restrict the flexible strip 55 to prevent it from being stretched or bent during the sorting of fish.

[0048] Furthermore, the flexible strip 55 is set at an angle, which can improve the speed and angle of dispersion, thereby increasing the efficiency and range of the fish's dispersion in all directions.

[0049] The sorting component 5 has a connecting sleeve 6 at one end, one end of which is sleeved on the outside of the multiple first connecting rods 52, and the other end of which is sleeved on the inside of the first through pipe 431. The auxiliary shaft 54 ​​has a flexible blade 56 at the end away from the first through pipe 431.

[0050] By incorporating a connecting sleeve 6, when the catch is discharged from the first pipe 431 to the sorting assembly 5, the catch carries a large amount of water. At this time, the flexible blade 56 drives the sorting assembly to rotate. Simultaneously, multiple first connecting rods 52 rotate around the auxiliary shaft 54, and their brushes 53 follow the rotation. This rotational motion guides the catch inside the net cage 42 to move. The movement of the catch increases the fluidity of organisms inside the net cage 42, helping juveniles to escape quickly and prompting large fish to escape from the separating fence 421. Furthermore, the rotational motion of the sorting assembly 5 is also affected by the surrounding catch. The deformation and recovery of the catch caused by the catch can transmit the vibration force to the three-way pipe 43, using the vibration force to shake off the catch sucked by the first pump body 433, thus preventing blockage of the three-way pipe 43 opening.

[0051] Furthermore, the connecting sleeve 6 is a bearing.

[0052] The top side of the tail support cavity 31 is connected to the first tube 32, and the first tube 32 is bent toward the direction of the ship 1;

[0053] A first support assembly 7 is provided on the bottom side of the floating base plate 41 near the tail support cavity 31. The first support assembly 7 includes at least one first support rod 71. One end of the first support rod 71 is hinged to the floating base plate 41. The first support rod 71 is positioned toward the tail support cavity 31. A spring 72 is coaxially extended and fixed at the other end of the first support rod 71. An elastic element 73 is provided at the end of the spring 72. The elastic element 73 has a spaced distance from or abuts against the first tube 32.

[0054] Through the above design, the first support component 7 is used to ensure an effective distance between the floating base 4 and the tail support cavity 31, preventing the floating base 4 from getting too close to the trawl net 2 and the tail support cavity 31 and interfering with the suction operation of the first pump body 433. In addition, the floating base and the tail support cavity 31 can be automatically adjusted according to the water movement of the floating base 4, which causes the elastic element 73 and spring 72 to displace and abut against the tail support cavity 31. This allows the distance between the floating component and the trawl net 2 to be automatically adjusted according to the water fluctuations and the weight of the organisms inside the floating component. During the deformation of the spring 72 and the elastic element 73, the contact between the elastic element 73 and the first tube 32 controls the distance on the one hand, and helps to generate sound on the other hand, prompting the organisms inside the first tube 32 to move quickly and avoid staying near the trawl net 2 and causing blockage.

[0055] Multiple buoy balls 311 are provided at the connection between the tail support cavity 31 and the trawl net 2, and a guide plate 321 is provided on the side of the first tube 32 away from the ship 1.

[0056] Through the above design, the first tube 32 has lower resistance during the movement of the vessel 1, which is beneficial to the vessel's navigation. In addition, multiple float balls 311 are provided at the connection between the tail support cavity 31 and the trawl net 2, which can provide buoyancy at the connection between the tail support cavity 31 and the trawl net 2, preventing the tail of the net from sinking due to the weight of the tail support cavity 31, and improving the catching efficiency of the trawl net 2. Furthermore, the design of multiple float balls 311 can further reduce the depth of the floating base 4 in the water, thereby improving the visibility of the floating base 4, so as to make it possible to roughly determine the position of the trawl net 2 using the floating base 4 and to provide appropriate buoyancy for the net bag using the floating base 4.

[0057] Furthermore, the guide plate 321 is equipped with multiple float balls 311.

[0058] The embodiments described above provide a detailed explanation of the technical solution of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, additions, or similar substitutions made within the scope of the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous, non-clogging pump suction device for Antarctic krill, comprising a trawl net (2) towed by a vessel (1), wherein the tail end of the trawl net (2) is connected to a pump suction assembly (3), characterized in that, The pump suction assembly (3) includes a net tail support cavity (31), one side of which is connected to a first pipe body (32), and the other end of the first pipe body (32) is connected to a floating base (4). A second pipe body (33) is connected to one side of the floating base (4), and the second pipe body (33) is connected to a pump body on the ship (1). The floating substrate (4) is used to realize the suction of the first tube (32) and the temporary storage of the catch; The floating substrate (4) includes floating substrates (41) arranged vertically opposite each other. A mesh box (42) is provided on the opposite side of the two floating substrates (41). A three-way pipe (43) is provided inside the mesh box (42). The three-way pipe (43) includes a first pipe (431) and a second pipe (432). One end of the second pipe (432) is vertically connected to the middle of the first pipe (431). The other end of the second pipe (432) passes through a floating substrate (41) and is connected to the first pump body (433). One end of the first pipe (431) is coaxially connected to the first pipe body (32). The other end of the first pipe (431) is provided with a sorting component (5). One end of the second tube (33) penetrates the floating substrate (41) into the cage (42); The sorting component (5) includes at least two steel rings (51) spaced apart. A first connecting rod (52) is arranged around the outside of the steel rings (51). A brush (53) is provided on the first connecting rod (52). An auxiliary shaft (54) is coaxially arranged inside the steel rings (51). A plurality of flexible strips (55) are arranged around the inside of the steel rings (51). The other end of the flexible strips (55) is connected to the auxiliary shaft (54). The sorting component (5) is provided with a connecting sleeve (6) at one end. One end of the connecting sleeve (6) is sleeved on the outside of a plurality of first connecting rods (52), and the other end of the connecting sleeve (6) is sleeved on the inside of the first through pipe (431). The auxiliary shaft (54) is provided with a flexible blade (56) at the end away from the first through pipe (431). The top side of the net tail support cavity (31) is connected to the first tube body (32), and the first tube body (32) is bent towards the direction of the ship (1); A first support assembly (7) is provided on the bottom side of the floating substrate (41) near the tail support cavity (31). The first support assembly (7) includes at least one first support rod (71). One end of the first support rod (71) is hinged to the floating substrate (41). The first support rod (71) is positioned toward the tail support cavity (31). A spring (72) is coaxially extended and fixed at the other end of the first support rod (71). An elastic element (73) is provided at the end of the spring (72). The elastic element (73) has a gap distance or abuts against the first tube (32).

2. The Antarctic krill continuous non-clogging pump suction device according to claim 1, characterized in that, The cage (42) is equipped with a partition fence (421) on the side closest to the ship (1).

3. The Antarctic krill continuous non-clogging pump suction device according to claim 1, characterized in that, The tail support cavity (31) is connected to the trawl net (2) with multiple floating balls (311). The first tube (32) is provided with a guide plate (321) on the side away from the ship (1), and multiple floating balls (311) are provided on the guide plate (321).

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