CN116897896A - Shrimp fishing net for removing other marine organisms - Google Patents

Abstract

The application discloses a shrimp fishing net for removing other marine organisms, which belongs to the field of fishing nets and comprises a fishing net body, wherein a supporting frame and a net bag are respectively arranged at two ends of the fishing net body, the supporting frame is fixedly connected with a first isolation net, the side wall of the fishing net is slidably connected with at least two first sliding blocks, the first sliding blocks are respectively fixedly provided with a second isolation net and a third isolation net, the first isolation net, the second isolation net and the third isolation net are of two-end opening structures, the second isolation net is positioned between the first isolation net and the second isolation net, and the inner side wall of the second isolation net is slidably connected with a switching assembly. According to the application, by arranging the three layers of separating nets, one end of the fishing port of the fishing net can be changed into different forms, and the vertical net is always vertical during and after the change of one end of the fishing port of the fishing net, so that the filter screen is always vertical to the vertical net, and the two continuous synergistic effects are realized, thereby solving the problem that the continuous fishing of the hairtail shrimp is inconvenient in the process of removing other marine organisms in the prior art.

Description

Shrimp fishing net for removing other marine organisms

Technical Field

The application belongs to the field of fishing nets, and particularly relates to a shrimp fishing net for removing other marine organisms.

Background

The shrimp body is 25-45 mm long, the body is very flat, the crust is very thin, the head and chest armor has the back thorns and liver thorns, the cheek thorns are not provided, the eye is spherical, the eye handles are slender, the body color is transparent, only the mouth organ part and the second touch whip are red, and the abdominal surface of the sixth abdominal section is light red. The ventral surface of the base limb of the tail limb is provided with a red round dot; the outer side of the base of the inner limb is provided with a row of red dots.

When the shrimps are caught, trawl fishing is needed to be carried out within a certain range, in the process, due to various marine organisms, other marine organisms often enter the shrimps fishing net, so that the shrimps are extruded and the weight of the trawl fishing process is increased.

In order to remove other marine organisms in the process of fishing the shrimps, chinese patent document CN108401994B describes a shrimp fishing net capable of removing other marine organisms, which comprises a trawl, wherein one end of the trawl is fixedly connected with a frame, the periphery of the frame is fixedly connected with a trawl port, a filter screen is connected inside the trawl, and the tail of the trawl is connected with a net bag; the net bag is characterized in that at least one outlet is arranged at the bottom of the net bag, the mesh number of the trawl is larger than that of the filter screen, the captured shrimps are prevented from escaping from the side face of the trawl, balls are arranged in the middle of the filter screen, a plurality of connecting rods are arranged outside the balls in a divergent mode, pull ropes are connected to the rollers, when the pull ropes are pulled, the filter screen is of a conical structure, blocked fishes and jellyfish can be placed into the sea again through escape openings, and the large marine organisms are prevented from entering the net bag along the trawl and are extruded.

The technical scheme still has the following problems: 1. in the process of fishing the hairtail through the trawl, the impact force of seawater in the fishing net is large, and in the process of removing other marine organisms by adjusting the shape of the filter screen through the pull rope, the formed conical structure can possibly discharge the hairtail out of the trawl through the escape opening; 2. the shrimp which is newly caught in the fishing net in the process of discharging other marine organisms cannot be efficiently fished in the period because the filter net is in a conical structure and is inconvenient for the shrimp to pass through the filter net.

Disclosure of Invention

The application aims to provide a shrimp fishing net for removing other marine organisms, which can effectively remove other marine organisms in the process of fishing shrimps and can continuously and efficiently catch shrimps in the process of removing other marine organisms.

In order to achieve the above object, the technical scheme of the present application is as follows: the shrimp fishing net comprises a fishing net body, wherein two ends of the fishing net body are respectively provided with a supporting frame and a net bag, the supporting frame is fixedly connected with a first separation net, the side wall of the fishing net is slidably connected with at least two first sliding blocks, the first sliding blocks are respectively fixedly provided with a second separation net and a third separation net, the first separation net, the second separation net and the third separation net are of two-end opening structures, the second separation net is positioned between the first separation net and the second separation net, and the inner side wall of the second separation net is slidably connected with a switching assembly;

the switching component comprises a supporting rod and a fixed block which are connected to the inner side wall of the second screen in a sliding way, one end, away from the second screen, of the supporting rod is hinged with the fixed block, a second sliding block is connected to the supporting rod in a sliding way, one end, away from the supporting frame, of the first screen is fixedly connected with the second sliding block, a vertical screen is fixedly connected to the fixed block, the second screen and the third screen are fixedly connected with the side wall of the vertical screen, escape openings are formed in the side wall of the vertical screen and the side wall of the fishing screen body, the escape openings are located between the second screen and the third screen, and a filter screen is fixedly connected to the bottom of the vertical screen;

the first sliding blocks are connected in series and are close to the first pull rope of the sliding block fixedly connected with of the supporting frame, the second pull rope of the supporting frame is fixedly connected with, and the third pull rope is fixedly connected with the fixed block.

The technical principle of the scheme is as follows: in the process of capturing the hairtail shrimps, there are two ways to remove the capturing net from other marine organisms except the hairtail shrimps; (1) The third stay cord is pulled, the first stay cord and the second stay cord are kept unchanged, the third stay cord pulls the fixed block, and due to the impact force of water, the first separation net, the second separation net and the third separation net can all receive the force towards the inside of the fishing net body, so that the support rod is inclined at a small angle along with the pulling of the fixed block, the fixed block slides along the support rod, the vertical net is always vertical, but the escape openings of the side wall of the vertical net and the side wall of the fishing net body are relatively close to the horizontal, so that other marine organisms can be removed from the fishing net through the escape openings, and the method is suitable for the condition that other marine organisms in the fishing area are less; (2) Loosening the first pull rope, keeping the second pull rope and the third pull rope unchanged, putting down the first sliding block along with the impact of water to slide towards the net bag, enabling the support rod to incline at a large angle, and enabling the vertical net to be vertical all the time, wherein an escape opening of the side wall of the vertical net is higher than an escape opening of the side wall of the fishing net body, and at the moment, other marine organisms in the vertical net, the second isolation net and the third isolation net can be removed by utilizing the escape capacity of other marine organisms of water and the impact force of the water; in the changing process of the two modes, the vertical net always keeps a vertical working state, and the shrimps can be continuously caught.

The adoption of the scheme has the following beneficial effects:

1. according to the scheme, through the arrangement of the three layers of separating nets, in the process of pulling the third pull rope or loosening the first pull rope, the other two pull ropes are kept unchanged in tension, so that one end of a fishing port of the fishing net can be changed into different forms, and the three layers of separating nets are respectively used for removing the condition of less other marine organisms and the condition of more other marine organisms; so as to adapt to different fishing areas, and the fishing port of the fishing net is changed in and after one end of the fishing port is changed, the filter screen is always vertical to the vertical net as the vertical net is always kept, and the two continuous synergistic effects make up the problem that the fishing of the shrimp is inconvenient to continue in the process of removing other marine organisms in the prior art.

After loosening the first stay cord, the escape opening of erecting the net lateral wall will be higher than the escape opening of catching net body lateral wall, and not only be convenient for more this moment other marine life escape, be directed against other marine life that is inconvenient for independently escape, because the mode of catching is adopted in catching the overshot of mao shrimp, consequently can constantly produce the impact force towards the string bag direction, utilize this impact force can assist other marine life to escape to catch and salvage the net.

2. According to the scheme, under the condition that three pull ropes are kept unchanged, the multi-layer separation nets are all arranged in a funnel shape, marine organisms including the shrimps in the range of the convergent support frame enter the vertical net, the shrimps enter the net bag through the filter net to remain, other marine organisms can enter the area of the second separation net and the third separation net support through the escape opening, but the escape opening of the side wall of the fishing net is higher than the escape opening of the side wall of the vertical net, and other marine organisms cannot easily escape from the fishing net due to the continuous impact force of seawater, but cannot block the filter net, namely the shrimps are not blocked, so that the other marine organisms can be fished together through the fishing net without affecting the fishing of the shrimps, and the application range of the fishing net is wider.

Further, the support rod is close to the spacing support rod of fixed block one end fixedly connected with and overlaps and be equipped with the elastic component, and the both ends of elastic component are respectively with spacing ring and second sliding block fixed connection.

The beneficial effects are that: the elastic piece is convenient for the second sliding block to reset after the fishing net is deformed and restored, namely the first net, the second net and the third net are reset. Meanwhile, the elastic piece is utilized to continuously shake the vertical net in the process of catching the shrimps, so that the shrimps can be stopped and other marine organisms in the vertical net can leave the vertical net as soon as possible through the escape opening, and the shrimps are prevented from being blocked.

Further, first stay cord keeps away from first sliding block one end fixedly connected with first sleeve pipe, and the supporting frame one end fixedly connected with second sleeve pipe is kept away from to the second stay cord, first sleeve pipe and second sleeve pipe sliding fit, and the third stay cord passes the second sleeve pipe and extends to outside the second sleeve pipe, and first sleeve pipe and the equal fixedly connected with haulage rope of second sleeve pipe.

The beneficial effects are that: the first pull rope is connected through the first sleeve pipe, and the first pull rope and the second pull rope are usually provided with a plurality of pull ropes, so that the first pull rope is easy to knot and not easy to distinguish when being directly used, can be more conveniently distinguished when being gathered on one pull rope, and can be used for uniformly adjusting the pulling distance of each first pull rope and each second pull rope when being pulled and adjusted.

Further, the second sleeve bottom fixedly connected with spacing portion, spacing portion diameter is greater than first sleeve diameter.

The beneficial effects are that: the limiting part can avoid loosening the traction rope on the first sleeve from being too large in distance, and the first sleeve slides to the second pull rope and the third pull rope to fold the second pull rope and the third pull rope, so that the problem that the opening of the fishing net is folded is solved.

Further, the mesh size of the vertical net is larger than that of the fishing net body.

The beneficial effects are that: the mesh size of the vertical net is larger, so that other marine organisms can escape conveniently, but the mesh size of the fishing net body is smaller, so that the shrimps cannot escape through the fishing net body.

Further, the mesh sizes of the first, second and third separating nets are gradually reduced in sequence, and the mesh size of the third separating net is the same as that of the filter screen.

The beneficial effects are that: can screen the shrimp through multilayer separates the net structure, screen it through the screening structure of multilayer separates the net to other marine organisms that the size is great directly. The third net is the last layer of the multi-layer net structure, so that the net mesh size is the same as that of the filter net, and only the shrimps are allowed to enter the net bag.

Further, the number of the first sliding blocks is three, and the first sliding block closest to one end of the net bag is connected with a negative weight in series.

The beneficial effects are that: the first sliding block is convenient for support the open end of the fishing net through the three-speed sliding block, so that the opening effect of the fishing net is better, and the open end of the fishing net is less prone to knotting in the use process and the net collecting process of the fishing net through the negative weight block.

Further, the tail of the net bag is provided with the discharge port, the discharge port is fixed through the rope to enable the discharge port at the tail of the net bag to be closed, and after fishing, the rope is untied to enable the discharge port at the tail of the net bag to be opened.

The beneficial effects are that: the net bag structure capable of being opened is convenient for taking out the shrimps from the net bag after the shrimps are caught.

Further, the mesh size of the filter screen is 15-40mm.

The beneficial effects are that: the filtering net suitable for the shrimp size is used for catching the shrimp, so that the fishing of other marine organisms with larger sizes is avoided.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

FIG. 1 is a schematic overall construction of an embodiment of the shrimp fishing net of the present application for removing other marine organisms;

FIG. 2 is a schematic view of a partial A construction of an embodiment of the shrimp fishing net of the present application for removing other marine organisms;

FIG. 3 is a schematic view of the structure of an embodiment of the shrimp fishing net of the present application after loosening and first stretching to remove other marine organisms.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In the description of the present application, it should be understood that the terms "longitudinal," "transverse," "vertical," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the application.

In the description of the present application, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the fishing net comprises a fishing net body 1, a net bag 2, a discharge port 3, a first sliding block 4, a first pull rope 5, a second pull rope 6, a third pull rope 7, a limiting part 8, a second sleeve 9, a first sleeve 10, a pull rope 11, a filter net 12, a third net 13, an escape port 14, a supporting cover 15, a loading block 16, a first net 17, a second net 18, a vertical net 19, a supporting rod 20, a second sliding block 21, a fixed block 22, a limiting ring 23 and a spring 24.

Embodiment one: as shown in fig. 1-3: the utility model provides a get rid of other marine organisms's shrimp and catch net, including catch net body 1, catch net body 1 both ends and be provided with braced frame and string bag 2 respectively, string bag 2 and catch net body 1 fixed connection, and the opening diameter that string bag 2 is close to catch net body 1 one end is less than the diameter of catching net body 1 to form the hourglass structure of likeness between messenger string bag 2 and the catch net body 1, be fixed connection equally between braced cover 15 and the catch net body 1, braced cover 15 will catch net body 1, makes it form the opening structure.

The supporting frame is fixedly connected with first net 17 that separates, catches net lateral wall sliding connection has two at least first sliding blocks 4, and two first sliding blocks 4 are fixed with second respectively and separate net 18 and third and separate net 13, and first net 17 that separates, second net 18 and third separate net 13 and be both ends open structure, combine the figure 1 to show, from left to right to separate net 17, second net 18 and third separate net 13 in proper order, and second separates net 18 inside wall sliding connection has the switching component.

The switching assembly comprises supporting rods 20 and fixed blocks 22 which are slidably connected to the inner side wall of the second separation net 18, the number of the supporting rods 20 is four, the supporting rods 20 are uniformly distributed in a sliding manner with the second separation net 18, one end of each supporting rod 20, far away from the second separation net 18, is hinged to the fixed block 22, the second sliding block 21 is slidably connected to the supporting rod 20, one end of each first separation net 17, far away from the supporting frame, is fixedly connected with the second sliding block 21, the fixed block 22 is fixedly connected with the vertical net 19, the diameters of the vertical net 19 are smaller than those of the third separation net 13, the first separation net 17 and the second separation net 18, in an initial state, the connecting position height of the third separation net 13 and the second separation net 18 and the first sliding block 4 is higher than that of the vertical net 19, the connecting position height of the first separation net 17 and the supporting cover 15 is higher than that of the connecting position of the second sliding block 21, therefore the third separation net 13, the first separation net 17 and the second separation net 18 are fixedly connected with the side wall of the vertical net 19, the diameter of the vertical net 19 is smaller than that of the third separation net 13, the first separation net 17 and the second separation net 18 are fixedly connected with the side wall of the second separation net 19, the second separation net 19 is formed between the two separation net 14 and the side wall of the second separation net 14 and the second separation net 14 is formed, and the same in diameter of the escape net 14 is formed between the two separation net and the two separation net 1 and the escape net and the side wall 14 is formed, and the escape net 14 is formed between the two separation net and the escape net 13 is formed.

The first sliding blocks 4 are connected in series through ropes, the first pull ropes 5 are fixedly connected to the sliding blocks close to the supporting frame, the second pull ropes 6 are fixedly connected to the supporting frame, and the third pull ropes 7 are fixedly connected to the fixing blocks 22.

The specific implementation process is as follows: the method of use for areas with less marine organisms is as follows: the third pull rope 7 is pulled, the first pull rope 5 and the second pull rope 6 are kept unchanged, the fixing block 22 is pulled by the third pull rope 7, the fixing block 22 drives the vertical net 19 to lift towards the supporting cover 15, the inclined angle of the conical structure of the first separation net 17 is increased and gradually approaches to the supporting cover 15, the vertical net 19 drives the escape opening 14 formed in the side wall of the vertical net to lift towards the supporting cover 15, and accordingly the escape opening 14 formed in the side wall of the fishing net body 1 is gradually horizontal to the position of the escape opening 14 formed in the side wall of the fishing net body 1, and other marine organisms between the third separation net 13 and the second separation net 18 are removed from the fishing net body 1.

The method for using the marine organism-rich region is as follows: referring to fig. 3, the first pull rope 5, the second pull rope 6 and the third pull rope 7 are loosened, the first sliding block 4 slides down towards the net bag 2 along with the impact of water, the supporting rods 20 incline at a large angle, the vertical net 19 is always vertical, but the escape opening 14 on the side wall of the vertical net 19 is higher than the escape opening 14 on the side wall of the fishing net body 1, so that the escape opening 14 is inclined towards the impact force direction of seawater, on one hand, other marine organisms can escape conveniently, and on the other hand, the impact force of the seawater is utilized to impact other marine organisms between the first separation net 17 and the second separation net 18 to promote the removal of the marine organisms from the fishing net body 1.

For the shrimp fishing: under the two different changing scenes, the vertical net 19 is always kept perpendicular to the filter screen 12, the effect of the first screen 17 on the opening end of the fishing net body 1 in the first changing scene is reduced, but the vertical net 19 can continuously catch the shrimps, the opening end of the fishing net body 1 in the second changing scene is enlarged, more shrimps can enter through the first screen 17 and are caught through the vertical net 19 and the filter screen 12, and the shrimps after catching finally enter the net bag 2 through the filter screen 12 to temporarily remain.

Embodiment two: as shown in fig. 2: compared with the first embodiment, the difference is that the end of the strut 20 close to the fixed block 22 is fixedly connected with a limiting strut 20, and an elastic member is sleeved on the limiting strut 20, and in this embodiment, the elastic member is a spring 24, and two ends of the spring 24 are respectively fixedly connected with the limiting ring 23 and the second sliding block 21.

The specific implementation process is as follows: after the open end of the fishing net body 1 is deformed in two ways in the embodiment, when the fishing net needs to be recovered, the spring 24 assists the second sliding block 21 to reset, the second sliding block 21 drives the first separation net 17 to reset, and meanwhile, the first separation net 17 and the second separation net 18 connected with the vertical net 19 can also be quickly reset by receiving the elasticity of the spring 24; in the process of catching the shrimps, a certain floating space is provided for the vertical net 19 through the springs 24, so that the shrimps can go out of the floating state for a long time, and other marine organisms entering the vertical net 19 can be caused to escape as soon as possible.

Embodiment III: as shown in fig. 1 and 3: in comparison with the embodiment, the difference is that the number of the first pull ropes 5 is several, for example: four, and a plurality of first stay cords 5 circumference equipartitions are fixed with first sliding block 4, and first stay cord 5 is kept away from first sliding block 4 one end fixedly connected with first sleeve pipe 10. The number of the second pull ropes 6 is also a plurality of, for example four, and the circumference of the second pull ropes 6 is uniformly distributed and fixed with the supporting cover 15, one end, far away from the supporting frame, of the second pull ropes 6 is fixedly connected with a second sleeve 9, a first sleeve 10 is in sliding fit with the second sleeve 9, a third pull rope 7 penetrates through the second sleeve 9 to extend out of the second sleeve 9, and both the first sleeve 10 and the second sleeve 9 are fixedly connected with a pull rope 11.

The specific implementation process is as follows: the first pull ropes 5 or the second pull ropes 6 can be adjusted by pulling the first pull ropes 5 and the second pull ropes 6 to respectively pull the second sleeve 9 and the pull ropes 11 on the first sleeve 10, and the adjusted lengths are more uniform.

Embodiment four: as shown in fig. 1 and 3: compared with the three phases of the embodiment, the difference is that the bottom of the second sleeve 9 is fixedly connected with a limiting part 8, the limiting part 8 is of a cylindrical structure, and the diameter of the limiting part 8 is larger than that of the first sleeve 10.

The specific implementation process is as follows: the position of the limiting part 8 is limited in the sliding process of the first sleeve 10 along the second sleeve 9, so that the limiting part cannot slide onto the first pull rope 5 and the second pull rope 6, and the first pull rope 5 and the second pull rope 6 are prevented from being folded.

Fifth embodiment: in comparison with the fourth embodiment, the difference is that the mesh size of the vertical net 19 is larger than that of the catching net body 1.

The specific implementation process is as follows: other marine organisms with smaller body sizes can directly escape through the meshes of the vertical net 19, but partial shrimps are smaller in size and easily escape through the meshes of the vertical net 19, so that the diameters of the meshes of the fishing net body 1 are smaller, the shrimps cannot escape through the meshes of the fishing net body 1, and after entering into escape channels between the second separation net 18 and the third separation net 13, other marine organisms with smaller body sizes give enough time to escape out of the fishing net body 1 through the escape openings 14.

Example six: compared with the fifth embodiment, the difference is that the mesh sizes of the first, second and third separating nets 17, 18, 13 gradually decrease in sequence, and the mesh size of the third separating net 13 is the same as the mesh size of the filter net 12.

The specific implementation process is as follows: other marine organisms with smaller body sizes and the shrimps can enter the space above the third separation net 13 through the first separation net 17 and the second separation net 18, but the other marine organisms with smaller body sizes cannot pass through the third separation net 13 together with the shrimps, so that the catching area of the shrimps is increased.

Embodiment seven: as shown in fig. 1 and 3: compared with the sixth embodiment, the difference is that the number of the first sliding blocks 4 is three, the three sliding blocks are uniformly and slidably connected to the side wall of the fishing net body 1, and the first sliding block 4 closest to one end (rightmost end) of the net bag 2 is connected in series with a negative weight 16.

The specific implementation process is as follows: the three first sliding blocks 4 support the opening end of the fishing net, so that the opening effect of the fishing net is better; the weight 16 makes the open end of the fishing net less prone to kinking during use and retraction of the fishing net.

Example eight: as shown in fig. 1 and 3: compared with the seventh embodiment, the net bag is characterized in that the tail of the net bag 2 is provided with the discharge port 3, the discharge port 3 is fixed through a rope to enable the discharge port 3 at the tail of the net bag 2 to be closed, and after fishing, the rope is untied to enable the discharge port 3 at the tail of the net bag 2 to be opened.

Example nine: the difference from the eighth embodiment is that the mesh size of the filter net 12 is 15-40mm, and the preferred embodiment is 20mm, and the filter net 12 with the mesh size suitable for catching shrimps with different sizes is selected.

The foregoing is merely exemplary of the present application and the specific structures and/or characteristics of the present application that are well known in the art have not been described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (9)

1. The utility model provides a remove other marine organism's shrimp fishing net which characterized in that: the fishing net comprises a fishing net body, wherein supporting frames and net bags are respectively arranged at two ends of the fishing net body, the supporting frames are fixedly connected with first isolation nets, at least two first sliding blocks are connected to the side walls of the fishing net in a sliding mode, second isolation nets and third isolation nets are respectively fixed to the first sliding blocks, the first isolation nets, the second isolation nets and the third isolation nets are of two-end opening structures, the second isolation nets are located between the first isolation nets and the second isolation nets, and switching assemblies are connected to the inner side walls of the second isolation nets in a sliding mode;

the switching component comprises a supporting rod and a fixed block which are connected to the inner side wall of the second screen in a sliding way, one end, away from the second screen, of the supporting rod is hinged with the fixed block, a second sliding block is connected to the supporting rod in a sliding way, one end, away from the supporting frame, of the first screen is fixedly connected with the second sliding block, a vertical screen is fixedly connected to the fixed block, the second screen and the third screen are fixedly connected with the side wall of the vertical screen, escape openings are formed in the side wall of the vertical screen and the side wall of the fishing screen body, the escape openings are located between the second screen and the third screen, and a filter screen is fixedly connected to the bottom of the vertical screen;

the first sliding blocks are connected in series and are close to the first pull rope of the sliding block fixedly connected with of the supporting frame, the second pull rope of the supporting frame is fixedly connected with, and the third pull rope is fixedly connected with the fixed block.

2. The other marine organism removing parent shrimp fishing net of claim 1, wherein: and one end of the supporting rod, which is close to the fixed block, is fixedly connected with a limiting supporting rod in a sleeved mode, and two ends of the elastic part are fixedly connected with the limiting ring and the second sliding block respectively.

3. The other marine organism removing parent shrimp fishing net of claim 2, wherein: the first stay cord is kept away from first sliding block one end fixedly connected with first sleeve pipe, and the supporting frame one end fixedly connected with second sleeve pipe is kept away from to the second stay cord, first sleeve pipe and second sleeve pipe sliding fit, and the third stay cord passes the second sleeve pipe and extends to outside the second sleeve pipe, and first sleeve pipe and the equal fixedly connected with haulage rope of second sleeve pipe.

4. A shrimp fishing net for removing other marine organisms according to claim 3, wherein: the second sleeve bottom fixedly connected with spacing portion, spacing portion diameter is greater than first sleeve diameter.

5. The other marine organism removing parent shrimp fishing net of claim 4, wherein: the mesh size of the vertical net is larger than that of the fishing net body.

6. The other marine organism removing parent shrimp fishing net of claim 5, wherein: the mesh sizes of the first, second and third separating nets are gradually reduced in sequence, and the mesh size of the third separating net is the same as that of the filter screen.

7. The other marine organism removing parent shrimp fishing net of claim 6, wherein: the number of the first sliding blocks is three, and the first sliding block closest to one end of the net bag is connected with a negative weight in series.

8. The other marine organism removing parent shrimp fishing net of claim 7, wherein: the net bag tail is provided with a discharge port, the discharge port is fixed through a rope to enable the net bag tail discharge port to be closed, and after fishing, the rope is untied to enable the net bag tail discharge port to be opened.

9. The other marine organism removing parent shrimp fishing net of claim 8, wherein: the mesh size of the filter screen is 15-40mm.