An anti-blocking release device for continuous fishing of Antarctic krill trawl

Abstract

The present application relates to an anti-blockage release device for continuous fishing of Antarctic krill trawl, comprising a first tube body, a plug-in cylinder, a round rod, a grille plate, a plug-in hole, a locking structure, a second tube body, and an elastic member; the first tube body is provided with two round rods arranged in parallel and rotatably connected to the inner wall of the first tube body; each round rod is connected to a grille plate; plug-in holes are provided on the end faces of both ends of each round rod; under normal circumstances, the round rods in the first tube body are limited and locked by the first tube body and the locking structure, and the plug-in hole is a polygonal hole to prevent the round rods from rotating; when blockage occurs, the plug-in cylinder of the first tube body is pulled out from the plug-in slot to expose the release slot; then the locking structure is pulled out from the plug-in hole, and under the weight of the blockage, the grille plate rotates around the round rod as the center to release and discharge the blockage; after the release is completed, the plug-in cylinder is reinserted into the plug-in slot under the action of the elastic member, and then the locking structure is plugged with the plug-in hole again, which has the function of facilitating resetting after the blockage is released.

Description

Technical Field

[0001] The present application relates to the technical field of Antarctic krill fishing, and in particular to an anti-blocking and releasing device for continuous fishing of Antarctic krill trawl. Background Art

[0002] Continuous fishing of Antarctic krill trawl refers to a fishing method in which the catch collected in the trawl net bag is transferred to the fishing boat while the trawl is being towed to catch Antarctic krill, thereby achieving continuous fishing and avoiding the need to pull up the net. See patent CN201811562447.2 Near-ship-end Antarctic krill continuous pump-suction fishing system, which discloses a pump-suction fishing structure that can achieve continuous fishing of Antarctic krill trawl. While the trawl is sweeping the sea for fishing, the catch collected in the bag net is sucked and transferred to the fishing boat by a shrimp suction pump to achieve continuous fishing.

[0003] In the related art, the pump-suction fishing system usually directly connects with the net bag of the trawl through a pump-suction interface to transfer the catch by pumping, but there are the following problems:

[0004] When there are large by-catch at the pump suction interface that cannot be transferred by the pump, or when there is a large amount of Antarctic krill catch accumulated, the tail of the net bag is prone to blockage, resulting in the inability to continuously transfer the catch by suction or affecting efficiency.

[0005] The structure for releasing after a blockage occurs needs to ensure high stability and be easy to open for release, that is, it needs to have a self-locking structure for easy resetting after the release is completed. Summary of the invention

[0006] The embodiment of the present application provides an anti-clogging and releasing device for continuous fishing of Antarctic krill trawl, so as to solve the problem in the related art that large by-catch cannot be transferred by pump suction at the pump suction interface, or when a large amount of Antarctic krill catch is accumulated, the tail of the net bag is easily blocked, resulting in the inability to continuously pump and transfer the catch.

[0007] In a first aspect, a device for preventing clogging and releasing an Antarctic krill trawling continuous fishing is provided, comprising:

[0008] The first tube body has a plug-in cylinder at the bottom, and two round rods are arranged in parallel inside the first tube body, and both ends of each round rod are sealed and rotatably connected to the inner wall of the first tube body; a grid plate is fixedly connected to the circumference of each round rod; the two grid plates form a filtering structure that separates the internal space of the first tube body; plug-in holes are provided on the end faces of both ends of each round rod, and the plug-in holes are polygonal holes; and a release notch is provided on the plug-in cylinder;

[0009] A locking structure, which is plugged into the plug hole to lock the round rod;

[0010] The second tube body has a plug-in groove which is plugged into the plug-in tube, and the inner wall of the plug-in groove is provided with an elastic member arranged along the axial direction of the second tube body, and the end of the elastic member away from the second tube body is connected to the plug-in tube; the second tube body is provided with a partition plate which is arranged parallel to the elastic member and spaced apart; when the second tube body and the first tube body are not separated, the top of the partition plate contacts the bottom of the grille plate.

[0011] In some embodiments, first arc-shaped guide grooves are provided on both sides of the round rod length direction of the first tube body;

[0012] The plug-in cylinder is provided with a second arc guide groove on both sides of the length direction of the round rod, which is connected with and colinear with the first arc guide groove; the grid plate is fixedly connected with a guide rod which is slidably connected with the first arc guide groove and the second arc guide groove;

[0013] The release notches are arranged on two side surfaces of the plug-in tube in a direction perpendicular to the length direction of the round rod.

[0014] In some embodiments, the lengths of the first arcuate guide groove and the second arcuate guide groove are such that when the locking structure is unlocked and the grid plate is deflected downward to a maximum angle, a side of the grid plate away from the round rod contacts or is flush with a top end surface of the second tube body.

[0015] In some embodiments, the locking structure includes a rectangular bar, and two plug-in rods are fixedly connected to the rectangular bar; the two plug-in rods are arranged horizontally and spaced apart;

[0016] The first tube body is provided with a through hole for the insertion rod to pass through; the insertion rod passes through the through hole and is connected with the corresponding insertion hole of the round rod.

[0017] In some embodiments, a hanging wire connected to the outer side of the first tube body is provided on the outer side of the rectangular strip.

[0018] In some embodiments, the round rod is made of steel; and a permanent magnet block is sealed at the inner center of the plug-in rod.

[0019] In some embodiments, a protrusion protruding outward is provided on the inner wall of the first tube body; a connection space for connecting the two ends of the round rod is formed in the protrusion; a vertical displacement limit plate is provided in the connection space, and a circular connection groove is provided on the vertical displacement limit plate; a first sealing ring in contact with the round rod is provided in the circular connection groove;

[0020] The via hole is arranged on the protruding portion.

[0021] In some embodiments, a protrusion avoidance groove is provided on the top of the second tube;

[0022] The top of the second tube is also provided with a second sealing ring in contact with the bottom of the first tube.

[0023] In some embodiments, the elastic member includes a fixing block fixedly connected to the inner wall of the second tube body, and a spring connected to the plug-in tube is provided on the fixing block.

[0024] In some embodiments, the cross-sections of the first tube body and the second tube body are of the same shape; the first tube body and the second tube body are polygonal tube bodies or circular tube bodies.

[0025] The beneficial effects of the technical solution provided by this application include:

[0026] The embodiment of the present application provides an anti-blocking and releasing device for continuous fishing of Antarctic krill trawls. Since a plug-in cylinder is provided at the bottom of the first tube body, two round rods arranged in parallel are provided inside the first tube body, and both ends of each round rod are sealed and rotatably connected to the inner wall of the first tube body; a grille plate is fixedly connected to the circumference of each round rod; the two grille plates form a filtering structure that separates the internal space of the first tube body; plug-in holes are provided on the end faces of both ends of each round rod, and the plug-in holes are polygonal holes; a release notch is provided on the plug-in cylinder; a locking structure is plugged into the plug-in hole to lock the round rod; a plug-in groove is provided in the second tube body to be plugged into the plug-in cylinder, and an elastic member is provided on the inner wall of the plug-in groove along the axial direction of the second tube body, and the elastic member is away from the first One end of the second tube body is connected to the plug-in cylinder. Through the above arrangement, under normal circumstances, the round rod is limited and locked by the first tube body and the locking structure, and the plug-in hole is a polygonal hole to prevent the round rod from rotating; when blockage occurs, the plug-in cylinder of the first tube body is pulled out from the plug-in slot to expose the release slot; then the locking structure is pulled out from the plug-in hole, and under the weight of the blockage, the grille plate rotates around the round rod to release and discharge the blockage; after the release is completed, the plug-in cylinder is reinserted into the plug-in slot under the action of the elastic member, and then the locking structure is plugged into the plug-in hole again, which has the function of facilitating resetting after the blockage is released. During the resetting process, the partition in the second tube body pushes the grille plate upward, thereby resetting the grille plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the overall structure of the anti-clogging and releasing device for continuous fishing of Antarctic krill trawl provided in an embodiment of the present application;

[0028] Figure 2 Provided in the embodiments of this application Figure 1 The enlarged schematic diagram at A in the middle;

[0029] Figure 3 A schematic diagram of the connection between the protrusion on the inner wall of the first tube body and the round rod provided in an embodiment of the present application;

[0030] Figure 4 Provided in the embodiments of this application Figure 3 The enlarged schematic diagram of point B in the middle;

[0031] Figure 5A schematic diagram of the structure of the elastic member and the second tube provided in an embodiment of the present application;

[0032] Figure 6 Provided in the embodiments of this application Figure 1 Side view of

[0033] Figure 7 A schematic diagram of the structure of the first tube body provided in an embodiment of the present application;

[0034] Figure 8 A schematic diagram of an area on the first tube body provided by an embodiment of the present application where a hole locking structure is connected;

[0035] Fig. 9 A schematic diagram of the state of two grid plates provided in an embodiment of the present application when being released.

[0036] In the figure: 1. first tube body; 100. first arc-shaped guide groove; 101. protrusion; 102. vertical displacement limit plate; 2. plug-in tube; 200. second arc-shaped guide groove; 201. release notch; 3. round rod; 4. grille plate; 400. guide rod; 5. plug-in hole; 6. locking structure; 600. rectangular bar; 601. plug-in rod; 7. second tube body; 700. protrusion avoidance groove; 701. partition; 8. elastic member; 800. fixing block; 801. spring. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0038] The embodiments of the present application provide an anti-clogging and releasing device for continuous fishing of Antarctic krill trawl, so as to solve the problem in the related art that large by-catch cannot be transferred by pump suction at the pump suction interface, or when a large amount of Antarctic krill catch is accumulated, the tail of the net bag is easily blocked, resulting in the inability to continuously pump and transfer the catch.

[0039] See also Figure 1-Figure 9 , an anti-blocking release device for continuous fishing of Antarctic krill trawl, comprising:

[0040] The first tube body 1 has a plug-in barrel 2 at its bottom. Two round rods 3 are arranged in parallel inside the first tube body 1. Both ends of each round rod 3 are sealed and rotatably connected to the inner wall of the first tube body 1. A grid plate 4 is fixedly connected to the circumference of each round rod 3. The two grid plates 4 form a filtering structure that separates the internal space of the first tube body 1. Plug-in holes 5 are provided on the end faces of both ends of each round rod 3. The cross section of the plug-in hole 5 is polygonal. A release notch 201 is provided on the plug-in barrel 2.

[0041] A locking structure 6, which is plugged into the plug hole 5 to lock the round rod 3;

[0042] The second tube body 7 has a plug-in groove therein for plugging with the plug-in tube 2, and the inner wall of the plug-in groove is provided with an elastic member 8 arranged along the axial direction of the second tube body 7, and the end of the elastic member 8 away from the second tube body 7 is connected to the plug-in tube 2, and a partition plate 701 is provided in the second tube body 7 and is spaced apart from the elastic member 8; when the second tube body 7 and the first tube body 1 are not separated, the top of the partition plate 701 contacts the bottom of the grille plate 4.

[0043] The first tube body 1 is connected to the net bag through a flange, and the second tube body 7 is connected to the delivery pipe of the pump suction fishing system through a flange. The cross-sectional area of ​​the plug-in tube 2 is smaller than that of the first tube body 1, and is adapted to the plug-in groove.

[0044] Through the above settings, under normal circumstances, the inner wall of the first tube body 1 limits the displacement of the round rod 3 in the up and down directions, and the locking structure 6 and the plug hole 5 are plugged in cooperation. Since the plug hole 5 is a polygonal hole, the round rod 3 can be prevented from rotating and circumferentially limited; thereby realizing the limit locking of the grid plate 4 to ensure that under normal circumstances, the two grid plates 4 will not deflect under the weight of the blockage; the two grid plates 4 are normally located on the same horizontal plane, thereby forming a filtering structure that separates the internal space of the first tube body 1, the filter structure below is the discharge space, and the filter structure above is the entry space. The plug-in tube 2 of the first tube body 1 is plugged into the plug-in slot of the second tube body 7, thereby realizing a sealed connection, which is convenient for use as a pump suction interface.

[0045] When a blockage occurs, firstly, the plug-in tube 2 of the first tube body 1 is pulled out from the plug-in slot to expose the release slot 201; then the locking structure 6 is pulled out from the plug-in hole 5 so that the round rod 3 can be rotated; then, under the weight of the blockage, the grille plate 4 rotates downward with the round rod 3 as the center until the grille plate 4 opens a certain angle. At this time, the grille plate 4 still serves as a filtering structure to ensure that larger by-fish will not enter the second tube body 7. Larger by-fish or blockages are discharged from the entry space above the filtering structure and then from the release slot 201 under the guidance of the grille plate 4; after the release is completed, the plug-in tube 2 is reinserted into the plug-in slot under the action of the elastic member 8, and then the locking structure 6 is plugged into the plug-in hole 5 again, which has the function of facilitating resetting after the blockage is released. Reference Fig. 9 The status of the display.

[0046] After unlocking the above, the weight of the obstruction is used to automatically press down the heavy grille plate 4 to complete the release, which is convenient for opening the grille plate 4, so that the two grille plates 4 form an arrow-shaped guide structure, which is more conducive to the discharge and release of the obstruction; in addition, for the present application, the structure for releasing after the blockage occurs needs to ensure high stability and be easy to open and release, that is, it needs to have a self-locking structure, which is easy to reset after the release is completed. In addition, due to its stable structure and the absence of electronic components, the probability of failure is relatively small.

[0047] During the resetting process, the partition plate 701 inside the second tube body 7 pushes the grid plate 4 upward during the resetting movement, thereby resetting the grid plate 4. The above elastic member 8 and the partition plate 701 can be used together to reset the first tube body 1 and the second tube body 7, as well as the two grid plates 4 at one time. The structure is simple and has dual functions. Figure 5 and Fig. 9 shown.

[0048] In some preferred embodiments, first arc-shaped guide grooves 100 are provided on both sides of the round rod 3 of the first tube body 1 in the length direction;

[0049] The plug-in cylinder 2 is provided with a second arc guide groove 200 on both sides of the round rod 3 in the length direction, which is connected with and collinear with the first arc guide groove 100; the grid plate 4 is fixedly connected with a guide rod 400 which is slidably connected with the first arc guide groove 100 and the second arc guide groove 200;

[0050] The release slots 201 are arranged on both sides of the plug-in tube 2 in a direction perpendicular to the length direction of the round rod 3. Such an arrangement not only forms an arrow-shaped guide structure for the two grid plates 4, which is more conducive to the discharge and release of the blockage, but also enables the release slots 201 to discharge from both sides, thereby increasing the release area.

[0051] The above arrangement ensures that when the weight of the obstruction is not enough to allow the grille plate 4 to rotate downward to the maximum angle, the maximum release can be achieved by moving the guide rod 400; in addition, the first arc guide groove 100 and the second arc guide groove 200 also limit the maximum opening angle of the guide rod 400, and also provide guidance during the movement of the guide rod 400.

[0052] In some preferred embodiments, the lengths of the first arc guide groove 100 and the second arc guide groove 200 are such that when the locking structure 6 is unlocked and the grid plate 4 is deflected downward to the maximum angle, the side of the grid plate 4 away from the round rod 3 contacts or is flush with the top end surface of the second tube body 7.

[0053] Such an arrangement enables the grating plate 4 to achieve maximum discharge and release after opening, and ensures that larger by-fish catches are discharged smoothly.

[0054] In some preferred embodiments, the locking structure 6 includes a rectangular bar 600, to which two plug-in rods 601 are fixedly connected; the two plug-in rods 601 are arranged horizontally and spaced apart; the cross-section of the plug-in rod 601 is the same as the shape of the polygonal hole;

[0055] The first tube body 1 is provided with a through hole for the insertion rod 601 to pass through; the insertion rod 601 passes through the through hole and is connected to the corresponding insertion hole 5 of the round rod 3.

[0056] The specific structure of the locking structure 6 is described above. The structure is simple and can limit the two round rods 3 at the same time, thereby facilitating the limiting. Only plugging and unplugging are required to complete the limiting in the rotation direction.

[0057] In some preferred embodiments, a hanging line connected to the outside of the first tube body 1 is provided on the outside of the rectangular bar 600; such a setting ensures that the locking structure 6 will not fall off after the plug-in rod 601 is pulled out of the plug-in hole 5, thereby facilitating the locking operation after the release is completed, and also avoiding the problem that the locking structure 6 falls off and causes the device to be unusable.

[0058] In some preferred embodiments, the round rod 3 is made of steel; a permanent magnet is sealed at the center of the plug rod 601. Since the permanent magnet is sealed at the center of the plug rod 601, magnetic force can be generated between the plug rod 601 and the round rod 3 made of steel, thereby achieving a stable connection between the plug rod 601 and the plug hole 5, and the plug rod 601 will not fall out of the plug hole 5 due to external vibration.

[0059] In some preferred embodiments, a protruding portion 101 protruding outward is provided on the inner wall of the first tube body 1; a connection space for connecting the two ends of the round rod 3 is formed in the protruding portion 101; a vertical displacement limit plate 102 is provided in the connection space, and a circular connection groove is provided on the vertical displacement limit plate 102; a first sealing ring in contact with the round rod 3 is provided in the circular connection groove;

[0060] The via hole is provided on the protrusion 101 .

[0061] Such an arrangement facilitates the installation of the round rod 3 , while the circular connecting groove and the first sealing ring on the vertical displacement limit plate 102 ensure the flow sealing effect.

[0062] In some preferred embodiments, a protrusion avoidance groove 700 is provided on the top of the second tube body 7;

[0063] A second sealing ring is also provided on the top of the second tube body 7 and contacts the bottom of the first tube body 1. This ensures that when the second tube body 7 is not moved, the second tube body 7 and the first tube body 1 are sealed, and the second sealing ring is compressed under the action of the elastic member 8, which also has the function of ensuring the sealing effect.

[0064] In some preferred embodiments, the elastic member 8 includes a fixing block 800 fixedly connected to the inner wall of the second tube body 7 , and a spring 801 connected to the plug-in tube 2 is provided on the fixing block 800 .

[0065] In some preferred embodiments, the cross-sections of the first tube body 1 and the second tube body 7 are the same; the first tube body 1 and the second tube body 7 are polygonal tubes or circular tubes. The first tube body 1 and the second tube body 7 are both made of corrosion-resistant steel or aluminum alloy.

[0066] In the present application, when the first tube body 1 and the second tube body 7 are circular tube bodies, the elastic member 8 can be replaced with a threaded structure, that is, a threaded portion is provided on the outer circumference of the plug-in tube 2 of the first tube body 1, and a thread matching the threaded connection groove is provided on the inner wall of the second tube body 7, so that when release is required, the second tube body 7 can be rotated.

[0067] When releasing, the unlocking operation of pulling the locking structure 6 out of the plug hole 5 and the operation of moving the second tube body 7 away from the first tube body 1 can be performed in any order, and again no specific limitation is made.

[0068] Beneficial effects of this application:

[0069] ① Through the above settings, under normal circumstances, the inner wall of the first tube body 1 limits the displacement of the round rod 3 in the up and down directions, and the locking structure 6 and the plug hole 5 cooperate to plug. Since the plug hole 5 is a polygonal hole, it can prevent the round rod 3 from rotating and perform circumferential limiting; thereby achieving the limiting locking of the grid plate 4 to ensure that under normal circumstances, the two grid plates 4 will not deflect under the weight of the blockage; the two grid plates 4 are normally located on the same horizontal plane, thereby forming a filtering structure that separates the internal space of the first tube body 1, with the discharge space below the filtering structure and the entry space above the filtering structure. The plug-in tube 2 of the first tube body 1 is plugged into the plug-in slot of the second tube body 7, thereby achieving a sealed connection, which is convenient for use as a pump suction interface.

[0070] When a blockage occurs, firstly, the plug-in tube 2 of the first tube body 1 is pulled out from the plug-in slot to expose the release slot 201; then the locking structure 6 is pulled out from the plug-in hole 5 so that the round rod 3 can be rotated; then, under the weight of the blockage, the grille plate 4 rotates downward with the round rod 3 as the center until the grille plate 4 opens a certain angle, at which time the grille plate 4 still serves as a filtering structure to ensure that larger by-fish catches will not enter the second tube body 7, and larger by-fish catches or blockages are discharged from the entry space above the filtering structure and then from the release slot 201 under the guidance of the grille plate 4; after the release is completed, the plug-in tube 2 is reinserted into the plug-in slot under the action of the elastic member 8, and then the locking structure 6 is plugged into the plug-in hole 5 again, which has the function of facilitating resetting after the blockage is released.

[0071] After unlocking the above, the weight of the obstruction is used to automatically press down the heavy grille plate 4 to complete the release, which is convenient for opening the grille plate 4, so that the two grille plates 4 form an arrow-shaped guide structure, which is more conducive to the discharge and release of the obstruction; in addition, for the present application, the structure for releasing after the blockage occurs needs to ensure high stability and be easy to open and release, that is, it needs to have a self-locking structure, which is easy to reset after the release is completed. In addition, due to its stable structure and the absence of electronic components, the probability of failure is relatively small.

[0072] ② The locking structure 6 has a simple structure and can limit the two round rods 3 at the same time, which is convenient for limiting. You only need to complete the plugging and unplugging to complete the limiting in the rotation direction. A hanging line connected to the outside of the first tube body 1 is provided on the outside of the rectangular bar 600; this arrangement ensures that the locking structure 6 will not fall off after the plug-in rod 601 is pulled out of the plug-in hole 5, which is convenient for the locking operation after the release is completed, and also avoids the problem that the locking structure 6 falls off and causes the device to be unusable.

[0073] ③ Since a permanent magnet block is sealed at the inner center of the plug rod 601, magnetic force can be generated between the plug rod 601 and the round rod 3 made of steel material, thereby achieving a stable connection between the plug rod 601 and the plug hole 5, and the plug rod 601 will not fall off from the plug hole 5 due to external vibration.

Claims

1. An anti-blocking release device for continuous fishing of Antarctic krill trawl, characterized in that: It includes: A first tube body (1) is provided with a plug-in cylinder (2) at its bottom, two round rods (3) are arranged in parallel inside the first tube body (1), and both ends of each round rod (3) are sealed and rotatably connected to the inner wall of the first tube body (1); a grid plate (4) is fixedly connected to the circumference of each round rod (3); the two grid plates (4) form a filtering structure that separates the internal space of the first tube body (1); plug-in holes (5) are provided on the end surfaces at both ends of each round rod (3), and the plug-in holes (5) are polygonal holes; a release notch (201) is provided on the plug-in cylinder (2); A locking structure (6) which is plugged into the plug hole (5) to lock the round rod (3); A second tube body (7) has a plug-in groove therein for plugging into the plug-in tube (2); an elastic member (8) is arranged axially along the second tube body (7) on the inner wall of the plug-in groove; an end of the elastic member (8) away from the second tube body (7) is connected to the plug-in tube (2); a partition plate (701) is arranged in parallel with the elastic member (8) and spaced apart from the elastic member (8) in the second tube body (7); The first tube body (1) is provided with first arc-shaped guide grooves (100) on both side surfaces of the round rod (3) in the length direction; the plug-in tube (2) is provided with second arc-shaped guide grooves (200) on both side surfaces of the round rod (3) in the length direction, which are connected to and colinear with the first arc-shaped guide grooves (100); the grille plate (4) is fixedly connected with a guide rod (400) which is slidably connected to the first arc-shaped guide groove (100) and the second arc-shaped guide groove (200); the release notches (201) are provided on both side surfaces of the plug-in tube (2) in a direction perpendicular to the length direction of the round rod (3); The lengths of the first arc-shaped guide groove (100) and the second arc-shaped guide groove (200) are such that, when the locking structure (6) is unlocked and the grid plate (4) is deflected downward to a maximum angle, a side of the grid plate (4) away from the round rod (3) contacts or is flush with a top end surface of the second tube body (7); The locking structure (6) comprises a rectangular bar (600) to which two plug-in rods (601) are fixedly connected; the two plug-in rods (601) are arranged horizontally and spaced apart; the first tube body (1) is provided with through holes for the plug-in rods (601) to pass through; the plug-in rods (601) pass through the through holes and are connected to the corresponding plug-in holes (5) of the round rods (3).

2. The anti-blocking release device for continuous fishing of Antarctic krill trawl according to claim 1, characterized in that: The outer side of the rectangular strip (600) is provided with a hanging wire connected to the outer side of the first tube body (1).

3. The anti-blocking and releasing device for continuous fishing of Antarctic krill trawl according to claim 1, characterized in that: The round rod (3) is made of steel; a permanent magnet block is sealed at the inner center of the plug-in rod (601).

4. The Antarctic krill trawling continuous fishing anti-blocking release device according to claim 1, characterized in that: The inner wall of the first tube body (1) is provided with a protruding portion (101) protruding outward; a connection space for connecting the two ends of the round rod (3) is formed in the protruding portion (101); a vertical displacement limit plate (102) is provided in the connection space, and a circular connection groove is provided on the vertical displacement limit plate (102); a first sealing ring in contact with the round rod (3) is provided in the circular connection groove; The via hole is provided on the protruding portion (101).

5. The anti-blocking and releasing device for continuous fishing of Antarctic krill trawl according to claim 4, characterized in that: A protrusion avoidance groove (700) is provided on the top of the second tube body (7); A second sealing ring is also provided on the top of the second tube body (7) and contacts the bottom of the first tube body (1).

6. The anti-blocking and releasing device for continuous fishing of Antarctic krill trawl according to claim 1, characterized in that: The elastic member (8) comprises a fixing block (800) fixedly connected to the inner wall of the second tube body (7), and a spring (801) connected to the plug-in cylinder (2) is provided on the fixing block (800).

7. The anti-blocking and releasing device for continuous fishing of Antarctic krill trawl according to claim 1, characterized in that: The cross-sections of the first tube body (1) and the second tube body (7) are of the same shape; the first tube body (1) and the second tube body (7) are polygonal tube bodies or circular tube bodies.

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