Continuous fishing pump for euphausia superba

Abstract

The application discloses a continuous Euphausia superba fishing pump for ships and belongs to the technical field of fishery. The pump body is connected with an inlet pipe at the inlet end and an outlet pipe at the outlet end. An inlet box is arranged between the inlet pipe and the pump body. The inlet box is provided with a pressure relief pipe. The connecting end of the pressure relief pipe and the inlet box is provided with a movable piece. The movable piece moves back and forth to control the connection between the pressure relief pipe and the inside of the inlet box. The application has the advantages of simple structure, easy operation, automatic adjustment of the suction force of the fish suction pump, prevention of blockage, reduction of damage to the catch and improvement of the efficiency of fishing operations.

Description

Technical Field

[0001] This invention belongs to the field of fishery fishing technology, specifically relating to a marine Antarctic krill continuous fishing pump. Background Technology

[0002] Antarctic krill is typically caught using trawling. Trawling is an important method in fisheries because it catches extremely large krill, can be conducted over a wide area, is flexible and proactive, and has high efficiency. While trawling pumps are commonly used to improve efficiency, blockages often occur at the pump's suction device during actual operations. This blockage affects harvesting efficiency and reduces the quality of the catch.

[0003] The invention application with publication number WO2021237956A1 relates to an auxiliary conveying device for continuous Antarctic krill trawl fishing based on towing power. It includes a pump suction inner pipe connected to the tail end of the net, an outer casing, a towing hydrodynamic drive mechanism, a gearbox, and a user-friendly spiral conveyor. The pump suction inner pipe is located inside and extends out of the outer casing. The user-friendly spiral conveyor is rotatably mounted inside the pump suction inner pipe. The towing hydrodynamic drive mechanism is located behind the outer casing. The first drive shaft of the towing hydrodynamic drive mechanism is connected to the input end of the gearbox, and the output end of the gearbox is connected to the user-friendly spiral conveyor via a second drive shaft, driving the spiral conveyor to rotate through the towing hydrodynamic drive mechanism. This device can assist in the continuous pump suction fishing system for the auxiliary conveying of catches, ensuring the continuity of the pump suction transfer of catches.

[0004] However, the aforementioned auxiliary conveying device for continuous Antarctic krill trawl fishing has a complex structure. The spiral conveyor can only assist in the one-way transport of the catch, and when it encounters blockage, it often severely damages the catch, thereby reducing the efficiency of trawl fishing. Summary of the Invention

[0005] The purpose of this invention is to provide a marine Antarctic krill continuous fishing pump that is simple in structure and easy to operate. It can automatically adjust the suction of the fish suction pump to prevent blockage, reduce damage to the catch, and improve the efficiency of fishing operations.

[0006] The technical solution adopted by the present invention to achieve the above objectives is as follows:

[0007] A marine Antarctic krill continuous fishing pump includes a pump body, an inlet pipe connected to the pump body, and an outlet pipe connected to the pump body. The pump body includes a fish suction base and a drive motor. The drive motor is located at the bottom of the fish suction base. The fish suction base is hollow inside and used for the transfer of the catch. The fish suction base and the outlet pipe are connected by a connecting flange.

[0008] A fish inlet box is installed between the fish inlet pipe and the pump body, and the fish inlet box is connected to the fish inlet pipe by a connecting flange. A pressure relief pipe is installed on the top of the fish inlet box, and a movable part is installed at the connection end between the pressure relief pipe and the fish inlet box. The movable part moves back and forth to control the connection between the pressure relief pipe and the inside of the fish inlet box.

[0009] Using the above technical solution, the pump body can draw in the catch from the fish inlet pipe through the operation of the drive motor, and promote the catch into the fish inlet box. After entering the pump body, the catch is finally discharged through the fish outlet pipe. The fish inlet box can buffer the catch during this transfer process. By changing the direction of the catch transport, the catch first enters the fish inlet box from the side, and then gradually enters the pump body from the bottom of the fish inlet box. This can avoid the pump body from being blocked due to the large amount of catch entering the pump body. Moreover, if the suction is too strong and the fish inlet box is likely to be blocked or about to be blocked, the pressure relief pipe can be opened by a movable part to release some of the suction force, thereby reducing the pump body's suction force and avoiding blockage.

[0010] In addition, when the pressure relief pipe is opened, on the one hand, the pump body can reduce the suction force in the direction of the fish inlet pipe, which can reduce the amount of catch sucked in in the direction of the fish inlet pipe for a certain period of time, thereby reducing the transfer pressure of the pump body; on the other hand, the air or water flow sucked in through the pressure relief pipe can impact the catch entering the fish inlet box, which helps to widen the gaps between the krill and change the movement direction of the catch locally through the flow of air or water, thereby effectively preventing blockage.

[0011] Furthermore, the movable part is equipped with a plug. During the reciprocating movement of the movable part, the plug can extend into or out of the pressure relief pipe, thereby achieving the sealing or opening of the pressure relief pipe.

[0012] According to one embodiment of the present invention, the movable component includes a swing plate and an auxiliary component. One end of the swing plate is movably connected to a pressure relief pipe, and the other end of the swing plate is connected to the auxiliary component. A return spring is connected between the auxiliary component and the swing plate.

[0013] According to one embodiment of the present invention, the auxiliary component includes a plurality of coaxially arranged auxiliary bases, which are connected by a connecting rod; a rotating shaft is sleeved on the auxiliary base, which is offset from the axis of the auxiliary base; a swing plate is rotatably connected to the rotating shaft through a rotating member, which is capable of rotating around the rotating shaft; the end of the rotating member away from the swing plate is connected to a return spring, and the end of the return spring away from the rotating member is fixedly connected to the auxiliary base.

[0014] Furthermore, the swing plate has a certain degree of curvature.

[0015] The auxiliary component is located at one corner of the top of the fish inlet box, and can adjust the swing plate's oscillation under external impact. Under normal circumstances, krill and other catches entering the fish inlet box through the inlet pipe will fall down the side wall of the fish inlet box into the pump body due to the pump's suction and their own weight. However, if the pump's suction is too strong, or if there are too many catches inside the fish inlet box, it will squeeze or impact the swing plate, causing the swing plate to misalign. This will connect the pressure relief pipe to the inside of the fish inlet box, thereby achieving a pressure relief effect and solving the blockage problem during the fish suction process.

[0016] In addition, the swing plate works in conjunction with the auxiliary components to form an inclined plate at one corner of the fish inlet box, which helps guide the catch entering the fish inlet box to move downwards; and always maintains a certain gap space inside the fish inlet box to prevent it from being filled with catch. In this way, even if the catch intake is too large or the pump is blocked, there is still a certain amount of adjustment space inside the fish inlet box, which facilitates unblocking, reduces damage to the overall structure of the fishing pump, and can reduce damage to the catch.

[0017] On the other hand, the presence of the oscillating plate can guide the catch entering the fish inlet box downwards, shortening its transmission path and reducing collision damage. The auxiliary components are located inside the fish inlet box, and the various auxiliary substrates and oscillating plates of these components can also reduce the transmission of sound waves inside the fish inlet box and dissipate sound wave energy, thereby reducing noise.

[0018] Multiple auxiliary base components are arranged in parallel, and multiple parts of the swing plate are also connected to the rotating shafts on the multiple auxiliary base components through rotating parts. On the one hand, this can ensure that the swing plate is subjected to balanced force and improve stability; on the other hand, by driving the auxiliary base components to rotate through the swing plate, the influence range of the auxiliary components can be expanded. Thus, when the catch hits the swing plate, the multiple auxiliary base components can be used to make the swing plate swing smoothly as a whole, and in this process, the catch below is scraped and sorted, thereby quickly solving the blockage problem.

[0019] Furthermore, the rotating component includes two oppositely arranged strip-shaped connecting wings, which are respectively connected to the swing plate and the return spring.

[0020] Furthermore, a limiting strip is provided on the outer edge of the auxiliary base component. During the rotation of the rotating component, the end of the connecting wing can abut against the limiting strip, thereby constraining the rotation angle of the rotating component. Through the cooperation of the return spring and the limiting strip, the swing plate can be automatically reset, thus ensuring the continuity of the fish transport.

[0021] According to one embodiment of the present invention, the pump body includes a hollow fish suction base, a flow guide is disposed inside the fish suction base, the top of the fish suction base is connected to the fish inlet box, and the side of the fish suction base is connected to the fish outlet pipe.

[0022] Furthermore, a drive motor is located below the fish suction body, and the output end of the drive motor is connected to the guide component, which can drive the guide component to rotate around the vertical axis. In this way, the catch inside the fish box can enter the interior of the fish suction body from the top and be discharged from the opening on the side of the fish suction body, and then discharged through the fish discharge pipe.

[0023] According to one embodiment of the present invention, the flow guide is rotatable along an axis; the flow guide includes an inlet guide plate and a bottom plate arranged vertically, the inlet guide plate being an inverted funnel-shaped structure with openings at both the top and bottom; a plurality of flow guide blades are arranged between the inlet guide plate and the bottom plate, and gaps are provided between the plurality of flow guide blades to facilitate the discharge of the catch.

[0024] Furthermore, the sidewalls of the inlet guide plate have an inwardly curved and concave surface structure, which helps to improve the guiding effect on the catch.

[0025] Furthermore, the edges of the guide vanes are equipped with buffer pads. The buffer pads are made of flexible materials such as rubber and silicone, which can reduce the degree of abrasion on the catch at the outlet of the guide vane when the catch is discharged, thus maintaining the integrity of the catch.

[0026] Furthermore, the guide vanes all have a certain curvature, and multiple guide vanes are arranged in a circumferential array between the inlet guide plate and the bottom plate, forming a turbine shape. There is a gap between two adjacent guide vanes, thus forming a channel for guiding the catch.

[0027] Therefore, the rotation of the guide vane, under the action of centrifugal force, can discharge the catch that has entered the guide vane, replacing the agitation of the paddles. This significantly reduces the chance of the catch coming into contact with the internal structure of the pump, thereby reducing or avoiding damage to the catch. Furthermore, using the rotation of the guide vane to drive the catch out under centrifugal force and increase its kinetic energy allows it to move smoothly towards the fish outlet pipe, saving energy. In addition, the rotation of the guide vane can create a swirling current in the surrounding water and among the catch, especially causing the catch inside the fish inlet box located at its top to rotate and move. Thus, the catch entering the fish inlet box through the fish inlet pipe does not fall vertically to the bottom of the fish inlet box, but rather falls in a vortex, effectively reducing the occurrence of blockages. Furthermore, the increased likelihood of the vortex-moving catch coming into contact with the swing plate inside the fish inlet box leads to the repeated opening and closing of the pressure relief pipe. This causes the pump to be in a state of constant adjustment in its suction of the catch, which helps to reduce the amount of catch entering the fish inlet box within a fixed time and avoids blockage.

[0028] According to one embodiment of the present invention, a connector is provided between the fish inlet box and the fish suction base. The connector is an inverted funnel-shaped structure. The top of the connector is connected to the outlet end of the fish inlet box, the bottom of the connector is sleeved on the outside of the inlet guide plate, and a gap is provided between the connector and the inlet guide plate.

[0029] Furthermore, the top of the connector is provided with a flow guide sleeve, which has a funnel-shaped structure. The flow guide sleeve is fitted inside the connector, with the top of the flow guide sleeve exposed outside the connector and the bottom of the flow guide sleeve fitted inside the inlet guide plate.

[0030] According to one embodiment of the present invention, the outer side of the inlet guide plate is provided with a plurality of balls, which are in rolling connection with the inner wall of the connector.

[0031] Furthermore, an annular buffer sleeve is fitted around the inlet guide plate, and the outer wall of the buffer sleeve is provided with an annular groove, with multiple balls embedded inside the annular groove.

[0032] Furthermore, the cushioning sleeve has a certain degree of elasticity and is made of rubber, silicone, or other materials.

[0033] The balls are able to roll inside the annular groove, with multiple balls partially exposed outside the annular groove, and the exposed portions of the balls abutting against the inner wall of the connector.

[0034] The lower part of the connector is adapted to the inlet guide plate, which can ensure that the catch can enter the pump body efficiently along the inlet guide plate. Furthermore, the gap between the inlet guide plate and the connector can avoid frictional contact between the two, thereby preventing the instability of the guide plate rotation caused by surface contact between the two.

[0035] The drive motor drives the rotation of the guide vane, but during the process of sucking up the catch, the guide vane may be subjected to uneven force, which may lead to contact between the inlet guide plate and the inner wall of the connector. The ball bearing can reduce wear between components and prevent overheating caused by friction, and can also reduce the noise generated during the rotation of the guide vane.

[0036] A connector is installed at the bottom of the fish inlet box. The connector has a funnel-like structure that can be adapted to the upper end of the inlet guide plate. This can be used to guide the catch into the pump body and to adjust or correct the verticality of the inlet guide plate, so as to avoid continuous frictional contact between the inlet guide plate and the inner wall of the connector.

[0037] The top of the drainage sleeve extends into the fish inlet box, and the bottom of the drainage sleeve mates with the top of the inlet guide plate to guide the catch inside the fish inlet box into the pump body. In some embodiments, the drainage sleeve is fixedly connected to the inlet guide plate and can rotate synchronously with it. In this way, the rotation of the drainage sleeve can increase the rotation amplitude of the catch inside the fish inlet box, thereby significantly reducing the chance of blockage.

[0038] According to one embodiment of the present invention, a trawl assembly is connected to the end of the fish inlet pipe away from the fish inlet box. The trawl assembly includes a net body and a fish suction pipe. One end of the fish suction pipe is connected to the fish inlet pipe, and the other end of the fish suction pipe is connected to the net body. A float is disposed on the outer wall of the fish suction pipe.

[0039] Furthermore, both the fish inlet pipe and the fish outlet pipe are equipped with check valves. One end of the check valve is rotatably connected to the inner wall of the fish inlet pipe or the fish outlet pipe. Rotating the check valve allows the other end of the check valve to abut or separate from the inner wall of the fish inlet pipe or the fish outlet pipe. The check valve is also equipped with a curved arc that faces the direction of fish transport.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] 1. The fish inlet box is designed to buffer the transfer of the catch, and the swing plate in the moving parts works in conjunction with the auxiliary components to release pressure when the pump suction is too strong. The movement direction of the catch is also changed locally by the flow of air or water to avoid blockage.

[0042] 2. The auxiliary components in the auxiliary assembly work together with the swing plate to ensure that the swing plate is subjected to balanced force and improve stability. On the other hand, it allows for some adjustment space inside the fish box, which facilitates unblocking and reduces damage to the catch. Furthermore, the auxiliary components and the swing plate can reduce the transmission of sound waves inside the fish box and consume sound wave energy to reduce noise.

[0043] 3. The design of the flow guide utilizes centrifugal force to discharge the catch, saving energy. The rotation of the flow guide causes a swirling current in the surrounding water and catch, resulting in the catch entering the fish inlet box falling in a vortex-like manner, thus effectively reducing the occurrence of blockages. Furthermore, the vortex-like movement of the catch increases the probability of contact between the catch and the swing plate inside the fish inlet box, causing the pressure relief pipe to repeatedly close and open. This keeps the pump's suction of the catch in a state of repeated adjustment, which helps to reduce the amount of catch entering the fish inlet box within a fixed time and avoid blockages.

[0044] Therefore, the present invention is a marine Antarctic krill continuous fishing pump with a simple structure and easy operation. It can automatically adjust the suction of the fish suction pump to prevent blockage, reduce damage to the catch, and improve the efficiency of fishing operations. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the structure of a marine Antarctic krill continuous harvesting pump according to Embodiment 1 of the present invention;

[0046] Figure 2 This is a schematic diagram of the check valve according to Embodiment 1 of the present invention;

[0047] Figure 3 for Figure 1 A schematic diagram of the flow guide shown in the figure;

[0048] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0049] Figure 5 for Figure 1 The diagram shows the structure of the movable component.

[0050] Figure 6 for Figure 5 A magnified view of part B in the middle section;

[0051] Figure 7 This is a partial structural schematic diagram of a marine Antarctic krill continuous harvesting pump according to Embodiment 2 of the present invention.

[0052] Figure 8 This is a schematic diagram of the cooperation structure between the flow guide and the buffer sleeve according to Embodiment 2 of the present invention.

[0053] Reference numerals: 11. Fish inlet pipe; 12. Fish outlet pipe; 13. Connecting flange; 14. Check valve; 20. Fish inlet box; 21. Pressure relief pipe; 31. Swing plate; 32. Auxiliary component; 33. Auxiliary base; 34. Limiting strip; 35. Connecting rod; 36. Rotating shaft; 37. Rotating component; 38. Connecting wing; 39. Return spring; 41. Fish suction base; 42. Drive motor; 43. Flow guide; 44. Inlet guide plate; 45. Bottom plate; 46. Flow guide blade; 47. Buffer pad; 51. Connecting component; 52. Ball bearing; 53. Buffer sleeve; 54. Drainage sleeve. Detailed Implementation

[0054] The technical solution of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0055] Example 1

[0056] Figures 1-6The diagram schematically illustrates a marine Antarctic krill continuous harvesting pump according to an embodiment of the present invention. As shown, the device includes a pump body, with an inlet pipe 11 connected to the inlet end of the pump body. A trawl assembly (not shown) is connected to the end of the inlet pipe 11 away from the inlet box 20. The trawl assembly includes a net body and a fish suction pipe. One end of the fish suction pipe is connected to the inlet pipe 11, and the other end is connected to the net body. A float is disposed on the outer wall of the fish suction pipe. An outlet pipe 12 is connected to the outlet end of the pump body. The pump body includes a fish suction base 41 and a drive motor 42. The drive motor 42 is located at the bottom of the fish suction base 41. The fish suction base 41 is hollow inside and used for transferring the catch. The fish suction base 41 and the fish discharge pipe 12 are connected by a connecting flange 13.

[0057] Both the fish inlet pipe 11 and the fish outlet pipe 12 are equipped with check valves 14. One end of the check valve 14 is rotatably connected to the inner wall of the fish inlet pipe 11 or the fish outlet pipe 12. Rotation of the check valve 14 allows the other end of the check valve 14 to abut or separate from the inner wall of the fish inlet pipe 11 or the fish outlet pipe 12. Furthermore, the check valve 14 is configured with a curved arc facing the direction of fish transport. Figure 2 As shown in the figure, the left arrow indicates the direction of fish transport inside the fish inlet pipe 11 or fish outlet pipe 12, and the right arrow indicates the direction of rotation of the reversible valve 14.

[0058] A fish inlet box 20 is provided between the fish inlet pipe 11 and the pump body. The fish inlet box 20 and the fish inlet pipe 11 are connected by a connecting flange 13. A pressure relief pipe 21 is provided on the top of the fish inlet box 20. A movable part is provided at the connection end between the pressure relief pipe 21 and the fish inlet box 20. The movable part moves back and forth to control the communication between the pressure relief pipe 21 and the inside of the fish inlet box 20.

[0059] By operating the drive motor 42, the pump body can draw in the catch from the fish inlet pipe 11 and force the catch into the fish inlet box 20. After entering the pump body, the catch is finally discharged through the fish outlet pipe 12. The fish inlet box 20 is designed to buffer the catch during this transfer process. By changing the direction of the catch transport, the catch first enters the fish inlet box 20 from the side and then gradually enters the pump body from the bottom of the fish inlet box 20. This avoids the pump body from being blocked due to excessive catch entering the pump body.

[0060] When excessive suction causes potential or imminent blockage inside the fish tank 20, the pressure relief pipe 21 can be opened via a movable component to release some suction and reduce the pump's suction force, thus preventing blockage. The movable component includes a swing plate 31 and an auxiliary component 32. One end of the swing plate 31 is movably connected to the pressure relief pipe 21, and the other end is connected to the auxiliary component 32. A return spring 39 connects the auxiliary component 32 and the swing plate 31. When there is too much fish inside the fish tank 20, the fish will impact the bottom of the swing plate 31, causing it to swing.

[0061] The swing plate 31 has a certain curvature and is equipped with a plug. During its reciprocating movement, the plug can extend into or out of the pressure relief pipe 21, thereby closing or opening the pressure relief pipe 21. When the pressure relief pipe 21 is open, on the one hand, it can reduce the suction force of the pump body in the direction of the fish inlet pipe 11, and reduce the amount of catch sucked in in the direction of the fish inlet pipe 11 for a certain period of time, thereby reducing the transfer pressure of the pump body; on the other hand, the airflow or water flow sucked in through the pressure relief pipe 21 can impact the catch entering the fish inlet box 20, which helps to widen the gaps between krill and locally change the movement direction of the catch through the flow of airflow or water, thereby effectively preventing blockage.

[0062] Specifically, the auxiliary component 32 is located at one corner of the top of the fish inlet box 20, and includes multiple coaxially arranged auxiliary bases 33 connected by connecting rods 35. Each of the auxiliary bases 33 has a rotating shaft 36 mounted at a corresponding position, and the rotating shaft 36 is offset from the axis of the auxiliary base 33. Different positions of the swing plate 31 are rotatably connected to the rotating shaft 36 via rotating members 37, and the multiple rotating members 37 can rotate synchronously around their corresponding rotating shafts 36. The end of the rotating member 37 away from the swing plate 31 is connected to a return spring 39, and the end of the return spring 39 away from the rotating member 37 is fixedly connected to the auxiliary base.

[0063] Under normal circumstances, krill and other catches entering the fish inlet box 20 through the fish inlet pipe 11 will fall down the side wall of the fish inlet box 20 into the pump body due to the suction of the pump body and their own weight. However, if the suction of the pump body is too strong, or if there are too many catches inside the fish inlet box 20, it will squeeze or impact the swing plate 31. The swing plate 31 will become misaligned, so that the pressure relief pipe 21 is connected to the inside of the fish inlet box 20, thereby achieving the effect of pressure relief and solving the blockage problem in the fish suction process.

[0064] Furthermore, the swing plate 31 cooperates with the auxiliary component 32 and forms an inclined plate at one corner of the fish inlet box 20, which helps guide the catch entering the fish inlet box 20 downwards. It also maintains a certain amount of space within the fish inlet box 20 to prevent it from being filled with catch. Thus, even if the catch intake is too large or the pump is blocked, there is still some adjustment space inside the fish inlet box 20, facilitating unblocking, reducing damage to the overall structure of the fishing pump, and minimizing damage to the catch. The swing plate 31 drives the auxiliary base 33 to rotate, expanding the influence range of the auxiliary component 32. When the catch impacts the swing plate 31, multiple auxiliary bases 33 promote the smooth swing of the swing plate 31, and in the process, scrape and organize the catch below, thus quickly resolving the blockage problem.

[0065] On the other hand, the presence of the swing plate 31 can guide the catch entering the fish box 20 to move downwards, shortening its transmission path and reducing collision damage. The auxiliary components 32 are set inside the fish box 20. The various auxiliary bases of the auxiliary components 32 and the swing plate 31 can also reduce the transmission of sound waves inside the fish box 20 and consume sound wave energy to reduce noise.

[0066] The rotating component 37 includes two opposing strip-shaped connecting wings 38, which are respectively connected to the swing plate 31 and the return spring 39. A limiting strip 34 is provided on the outer edge of the auxiliary base component 33. During the rotation of the rotating component 37, the ends of the connecting wings 38 can abut against the limiting strip 34, thereby constraining the rotation angle of the rotating component 37. Through the cooperation of the return spring 39 and the limiting strip 34, the swing plate 31 can be automatically reset, thus ensuring the continuity of fish transport.

[0067] The pump body includes a hollow fish-suction base 41, inside which a flow guide 43 is disposed. The top of the fish-suction base 41 is connected to the fish inlet box 20, and the side of the fish-suction base 41 is connected to the fish outlet pipe 12. A drive motor 42 is disposed below the fish-suction base 41, and the output end of the drive motor 42 is connected to the flow guide 43, which can drive the flow guide 43 to rotate around a vertical axis. In this way, the catch inside the fish inlet box 20 can enter the interior of the fish-suction base 41 from the top and be discharged from the opening on the side of the fish-suction base 41, and then discharged through the fish outlet pipe 12.

[0068] The flow guide 43 includes an inlet guide plate 44 and a bottom plate 45 arranged vertically, with multiple flow guide blades 46 disposed between the bottom plate 45 and the flow guide.

[0069] The inlet guide plate 44 is an inverted funnel-shaped structure with openings at both the top and bottom. Its sidewalls are curved and concave, which helps to improve the guidance of the catch.

[0070] Each of the guide vanes 46 has a certain curvature, and gaps are provided between multiple guide vanes 46. They are also arranged in a circumferential array between the inlet guide plate 44 and the bottom plate 45, forming a turbine shape. The gap between two adjacent guide vanes forms a flow channel for the catch, facilitating the discharge of the catch. The edges of the guide vanes 46 are equipped with buffer pads 47, which are made of flexible materials such as rubber and silicone. This reduces the degree of abrasion on the catch at the outlet end of the guide member 43 when the catch is discharged, thus maintaining the integrity of the catch.

[0071] The rotation of the guide member 43, under the action of centrifugal force, can discharge the catch that has entered the guide member 43, replacing the agitation of the paddle blades. This significantly reduces the probability of contact between the catch and the internal structure of the pump body, thereby reducing or avoiding damage to the catch. Furthermore, by using the rotation of the guide member 43 to drive the catch out under the action of centrifugal force, and giving it a certain kinetic energy, it can move smoothly towards the fish outlet pipe 12, saving energy. In addition, the rotation of the guide member 43 can cause a swirling current in the water and catch nearby, especially causing the catch inside the fish inlet box 20 located at its top to rotate and move. Thus, the catch entering the fish inlet box 20 through the fish inlet pipe 11 does not fall vertically to the bottom of the fish inlet box 20 during its descent, but falls in a vortex, effectively reducing the occurrence of blockages. Furthermore, the vortex-like movement of the catch increases the probability of contact between the fish inlet box 20 and the swing plate 31, thereby causing the pressure relief pipe 21 to repeatedly close or open, and the pump body to repeatedly adjust the suction of the catch, which helps to reduce the amount of catch entering the fish inlet box 20 within a fixed time and avoid blockage.

[0072] Example 2

[0073] Figure 7 and Figure 8 This schematically illustrates a marine Antarctic krill continuous harvesting pump according to another embodiment of the present invention, which differs from Example 1 in that:

[0074] A connector 51 is disposed between the fish inlet box 20 and the fish suction base 41. The connector 51 has an inverted funnel-shaped structure. The top of the connector 51 is connected to the outlet end of the fish inlet box 20, and the bottom of the connector 51 is fitted onto the outside of the inlet guide plate 44, with a gap between the connector 51 and the inlet guide plate 44. Multiple ball bearings 52 are provided on the outside of the inlet guide plate 44, and the multiple ball bearings 52 are in rolling connection with the inner wall of the connector 51.

[0075] Specifically, an annular buffer sleeve 53 is fitted around the inlet guide plate 44. The outer wall of the buffer sleeve 53 has an annular groove, and multiple balls 52 are embedded inside the annular groove. The buffer sleeve 53 has a certain degree of elasticity and is made of rubber, silicone, or other materials. The balls 52 can roll inside the annular groove, and each ball 52 is partially exposed outside the annular groove, with the exposed portion of the balls 52 abutting against the inner wall of the connector 51.

[0076] The top of the connector 51 is provided with a flow guide sleeve 54, which has a funnel-shaped structure. The flow guide sleeve 54 is fitted inside the connector 51, and the top of the flow guide sleeve 54 is exposed outside the connector 51. The bottom of the flow guide sleeve 54 is fitted inside the inlet guide plate 44.

[0077] The lower part of the connector 51 is adapted to the inlet guide plate 44, which can ensure that the catch can enter the pump body efficiently along the inlet guide plate 44. Furthermore, there is a gap between the inlet guide plate 44 and the connector 51, which can avoid frictional contact between the two, thereby preventing the guide plate 43 from rotating unstably due to surface contact between the two.

[0078] The drive motor 42 drives the rotation of the guide component 43, but during the process of sucking up the catch, the guide vane 46 may be subjected to uneven force, which may lead to the contact between the inlet guide plate 44 and the inner wall of the connector 51. The ball bearing 52 can reduce wear between components and prevent the temperature rise caused by friction, and can also reduce the noise generated during the rotation of the guide component 43.

[0079] A connector 51 is provided at the bottom of the fish inlet box 20. The connector 51 has a funnel-like structure that can be adapted to the upper end of the inlet guide plate 44. This can be used to guide the catch into the pump body and to adjust or correct the verticality of the inlet guide plate 44, so as to avoid continuous frictional contact between it and the inner wall of the connector 51.

[0080] The top of the guide sleeve 54 extends into the fish inlet box 20, and the bottom of the guide sleeve 54 cooperates with the top of the inlet guide plate 44 to guide the catch inside the fish inlet box 20 into the pump body. In this embodiment, the top of the guide sleeve 54 is fitted inside the fish inlet box 20 and closes the outlet end at the bottom of the fish inlet box 20; and the guide sleeve 54 is fixedly connected to the inlet guide plate 44 and can rotate synchronously with it. In this way, the rotation amplitude of the catch inside the fish inlet box 20 can be increased by the rotating guide sleeve 54, thereby greatly reducing the probability of blockage.

[0081] The conventional operations in the operation steps of this invention are well known to those skilled in the art and will not be described in detail here.

[0082] 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 marine-mounted Antarctic krill continuous fishing pump, comprising a pump body, wherein an inlet pipe (11) is connected to the inlet end of the pump body, and an outlet pipe (12) is connected to the outlet end of the pump body; characterized in that, A fish inlet box (20) is provided between the fish inlet pipe (11) and the pump body. A pressure relief pipe (21) is provided in the fish inlet box (20). A movable part is provided at the connection end between the pressure relief pipe (21) and the fish inlet box (20). The movable part moves back and forth to control the communication between the pressure relief pipe (21) and the inside of the fish inlet box (20). The movable component includes a swing plate (31) and an auxiliary component (32). One end of the swing plate (31) is movably connected to the pressure relief pipe (21), and the other end of the swing plate (31) is connected to the auxiliary component (32). A return spring (39) is connected between the auxiliary component (32) and the swing plate (31). The auxiliary component (32) includes a plurality of coaxially arranged auxiliary bases (33), which are connected by a connecting rod (35); A rotating shaft (36) is sleeved on the auxiliary base (33). The rotating shaft (36) is offset from the axis of the auxiliary base (33). The swing plate (31) is rotatably connected to the rotating shaft (36) through a rotating member (37). The end of the rotating member (37) away from the swing plate (31) is connected to the return spring (39). The end of the return spring (39) away from the rotating member (37) is fixedly connected to the auxiliary base.

2. The marine Antarctic krill continuous harvesting pump according to claim 1, characterized in that, The pump body includes a hollow fish suction base (41), and the inside of the fish suction base (41) is equipped with a rotatable guide (43). The top of the fish suction base (41) is connected to the fish inlet box (20), and the side of the fish suction base (41) is connected to the fish outlet pipe (12).

3. The marine Antarctic krill continuous harvesting pump according to claim 2, characterized in that, The flow guide (43) is rotatable along the axis; the flow guide (43) includes an inlet guide plate (44) and a bottom plate (45) arranged vertically, the inlet guide plate (44) is an inverted funnel-shaped structure; a plurality of flow guide blades (46) are arranged between the inlet guide plate (44) and the bottom plate (45), and a gap is provided between the plurality of flow guide blades (46).

4. The marine Antarctic krill continuous harvesting pump according to claim 3, characterized in that, A connector (51) is provided between the fish inlet box (20) and the fish suction base (41). The connector (51) is an inverted funnel-shaped structure. The top of the connector (51) is connected to the outlet end of the fish inlet box (20). The bottom of the connector (51) is sleeved on the outside of the inlet guide plate (44), and there is a gap between the connector (51) and the inlet guide plate (44).

5. The marine Antarctic krill continuous harvesting pump according to claim 4, characterized in that, The inlet guide plate (44) is provided with a plurality of balls (52) on its outside, and the plurality of balls (52) are rolledly connected to the inner wall of the connector (51).

6. The marine Antarctic krill continuous harvesting pump according to claim 1, characterized in that, The end of the fish inlet pipe (11) away from the fish inlet box (20) is connected to a trawl assembly. The trawl assembly includes a net body and a fish suction pipe. One end of the fish suction pipe is connected to the fish inlet pipe (11), and the other end of the fish suction pipe is connected to the net body. A float is disposed on the outer wall of the fish suction pipe.

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