Antarctic krill negative pressure continuous pumping device and fishing method thereof

Abstract

The present application relates to a negative pressure continuous pumping device for Antarctic krill and a fishing method thereof, and relates to the technical field of krill fishing, which comprises a fishing net, a krill collection assembly is installed at the tail end of the fishing net, a pump suction pipe is installed on the krill collection assembly, a negative pressure collection assembly is installed at one end of the pump suction pipe away from the krill collection assembly, a krill collection bin is installed at the lower end of the negative pressure collection assembly, the negative pressure collection assembly is used to generate negative pressure, and the negative pressure collection assembly is used to suck the krill from the krill collection assembly and input it into the krill collection bin. The present application has the effect of "reducing the squeezing of krill during the fishing process, keeping the krill intact in shape and improving the quality of the krill".

Description

Technical Field

[0001] The present application relates to the technical field of krill fishing, and in particular to an Antarctic krill negative pressure continuous pumping device and a fishing method thereof. Background Art

[0002] Krill is rich in nutrients such as protein and calcium, and is very popular among consumers. Krill is usually caught with fishing nets. The traditional fishing method is to put the fishing net in the sea, and after a period of fishing, the fishing net is lifted out of the sea, and the krill in the fishing net is collected in the cabin for processing. When the krill is pulled out of the sea, the krill is squeezed and deformed, which affects the quality of the krill. For example, the patent with authorization announcement number CN105393999B discloses a continuous fishing auxiliary system for Antarctic krill and its pumping device. The pump body transports the krill. During the fishing process, the krill come into contact with the impeller in the pump body, and the krill are chopped by the impeller, which affects the quality of the krill. For example, the patent with announcement number: CN218681348U discloses an Antarctic krill vacuum pump suction bag net shrimp water mixing device, which collects the krill in a shrimp collecting bucket and then transports them to a designated location for production and processing through a pump suction tube. When the krill gather in the shrimp collecting bucket, the shrimp collecting bucket is a bucket-shaped structure, and a large number of krill gather at the shrimp collecting bucket position, generating extrusion pressure under negative pressure, causing the krill to deform and affecting the quality of the krill. Summary of the invention

[0003] The purpose of this application is to provide an Antarctic krill negative pressure continuous pumping device and a fishing method thereof, so as to solve the technical problem of "low quality during krill fishing".

[0004] The present application provides an Antarctic krill negative pressure continuous pumping device and a fishing method thereof, which adopt the following technical scheme: an Antarctic krill negative pressure continuous pumping device, comprising a fishing net, a krill collecting assembly being installed at the tail end of the fishing net, a pump suction pipe being installed on the krill collecting assembly, a negative pressure collecting assembly being installed at the end of the pump suction pipe away from the krill collecting assembly, a krill collecting bin being installed at the lower end of the negative pressure collecting assembly, the negative pressure collecting assembly being used to generate negative pressure, and the negative pressure collecting assembly being used to suck the krill from the krill collecting assembly and input it into the krill collecting bin.

[0005] Optionally, the krill collecting assembly includes a krill collecting bucket, which is a bucket-shaped structure; a fishing net connecting piece is installed at the end of the krill collecting bucket with a smaller diameter, and an arc-shaped bottom plate is installed at the end of the krill collecting bucket with a larger diameter; a krill discharge pipe is installed on the side of the krill collecting bucket, and the krill discharge pipe is sealed and connected to the pump suction pipe.

[0006] Optionally, the negative pressure collection assembly includes a negative pressure bin, a sealing end cover is installed on the upper side of the negative pressure bin, a negative pressure pump assembly is installed on the sealing end cover, a krill feed pipe is installed on the side of the negative pressure bin, a krill discharge assembly is installed at the lower end of the negative pressure bin, and a filter is installed in the negative pressure bin, and the filter is used to prevent krill from entering the negative pressure pump assembly.

[0007] Optionally, the krill discharge assembly includes a discharge chamber, a discharge motor is installed on the discharge chamber, a discharge shaft is rotatably installed at the center of the discharge chamber, a plurality of closed leaves are installed on the discharge shaft, a side of the closed leaves away from the discharge shaft is in contact with an inner wall of the discharge chamber, the closed leaves and the discharge shaft form a discharge hopper, a discharge port is installed at the lower end of the discharge chamber, and the discharge port is connected to the krill collection bin.

[0008] Optionally, a drainage hole is provided on the upper side of the krill collecting bin, and a krill conveying pipe is provided on the krill collecting bin, and the krill conveying pipe is used to convey the krill to the assembly line.

[0009] Optionally, the fishing net connecting piece includes a transverse arc rod fixed on the krill collecting bucket, a longitudinal arc rod fixed on the krill collecting bucket, a connecting ring fixed on the end of the krill collecting bucket and a connecting handle fixed on the side wall of the fishing net connecting piece; the connecting handle is used for tying the fishing net; the longitudinal arc rod and the transverse arc rod are interconnected to form a hemispherical structure.

[0010] Optionally, a fishing net traction assembly is installed at one end of the fishing net away from the krill collection assembly, and the fishing net traction assembly includes an open bracket, and a plurality of first traction ropes are installed on the side of the open bracket close to the fishing net, one end of the first traction rope is connected to the open bracket, and the other end is connected to the fishing net; a plurality of second traction ropes are installed on the side of the open bracket away from the fishing net, and a connecting locking piece is installed at one end of the second traction rope away from the open bracket, and the connecting locking piece is used to connect to an icebreaker; a plurality of support rods are provided on the open bracket, and the support rods are cross-arranged; a center ring is provided near the center of the support rod, and the center ring is used to concentrate seawater to align the seawater to the opening of the fishing net.

[0011] Optionally, a protective layer is provided on the outside of the pump suction tube, and the protective layer is used to prevent the pump suction tube from being scratched.

[0012] A vacuum continuous pumping fishing method for Antarctic krill comprises the following steps:

[0013] S1: Assembling the fishing net: connecting the fishing net to the open bracket through a first traction rope, connecting the open bracket to the connecting locking member through a second traction rope, and installing the connecting locking member on the icebreaker;

[0014] S2: Installation of krill collection bucket: The krill collection bucket is fixedly connected to the end of the fishing net away from the fishing net traction assembly through the fishing net connector, the krill feed pipe is connected to the pump suction pipe, and the negative pressure collection assembly is connected to the krill collection bin and fixed on the icebreaker;

[0015] S3: Fishing net placement: placing the fishing net and krill collection bucket into the sea;

[0016] S4: Krill fishing: The fishing net is dragged by an icebreaker. After the krill are gathered at the tail end of the fishing net, a negative pressure pump assembly is used to generate negative pressure in the negative pressure chamber. Under the action of the negative pressure, the pump suction tube draws the krill in the krill collection bucket into the negative pressure chamber.

[0017] S5: Krill collection: The krill are put into the krill collection bin through the krill discharge assembly, and the excess seawater is discharged through the drainage holes set on the upper side of the krill collection bin. The krill are stored in the krill collection bin and transported to the assembly line for processing and production through the krill conveying pipe.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. During the krill fishing process, the krill are collected in the krill collection assembly, which is connected to the negative pressure collection assembly through a pump suction pipe, and the krill and seawater are transported to the negative pressure collection assembly through the negative pressure generated by the negative pressure collection assembly, and then the krill and seawater are transported to the krill collection bin through the krill discharge assembly, so that the krill can be collected without pulling the fishing net out of the sea, thereby saving manpower, reducing the squeezing of the krill by the fishing net, reducing the death of the krill, so that the krill maintains a complete shape, thereby improving the quality of the krill;

[0020] 2. During the krill transportation process, the krill will not come into contact with the impeller of the pump body, which reduces the collision of the impeller with the krill, thereby reducing the damage to the krill and improving the quality of the krill;

[0021] 3. The captured krill are sucked into the negative pressure collection component by negative pressure, and then transported to the krill collection tank, so that the krill collected in the krill collection tank can be kept fresh and the quality of the krill can be improved;

[0022] 4. When the krill enters the fishing net, it can be promptly transported to the krill collection bin through the suction generated by the negative pressure collection component. The krill caught are live krill, thereby further improving the quality of krill products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application;

[0024] Figure 2This is a schematic diagram of the structure of a fishing net according to an embodiment of the present application;

[0025] Figure 3 This is a schematic diagram of the structure of a krill collection component according to an embodiment of the present application;

[0026] Figure 4 is a schematic diagram of the cross-sectional structure of a krill collection assembly according to an embodiment of the present application;

[0027] Figure 5 It is a schematic diagram of the structure of the negative pressure collection component of an embodiment of the present application;

[0028] Figure 6 1 is a schematic diagram of the transverse cross-sectional structure of a negative pressure collection assembly according to an embodiment of the present application;

[0029] Figure 7 1 is a schematic diagram of the longitudinal cross-sectional structure of a negative pressure collection assembly according to an embodiment of the present application;

[0030] Figure 8 It is a schematic diagram of the fishing method flow chart of the embodiment of the present application.

[0031] In the figure, 1, fishing net; 2, krill collection assembly; 21, krill collection bucket; 22, fishing net connector; 221, transverse arc rod; 222, longitudinal arc rod; 223, connecting ring; 224, connecting handle; 23, arc bottom plate; 24, krill discharge pipe; 3, pump suction pipe; 31, protective layer; 4, negative pressure collection assembly; 41, negative pressure chamber; 42, sealing end cover; 43, negative pressure pump assembly; 431, vacuum pump; 432, water pump; 433, Liquid level sensor switch; 44, krill feed pipe; 45, krill discharge assembly; 451, discharge chamber; 452, discharge motor; 453, discharge shaft; 454, closing leaf; 455, discharge port; 46, filter; 5, krill collection bin; 51, drainage hole; 52, krill delivery pipe; 6, fishing net traction assembly; 61, open bracket; 62, first traction rope; 63, second traction rope; 64, connecting locking piece; 65, support rod; 66, center ring. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.

[0033] Reference Figure 1 , Figure 2A negative pressure continuous pumping device for Antarctic krill and a fishing method thereof, comprising a fishing net 1, a krill collecting component 2 is installed at the tail end of the fishing net 1, a pump suction pipe 3 is installed on the krill collecting component 2, a negative pressure collecting component 4 is installed at the end of the pump suction pipe 3 away from the krill collecting component 2, a krill collecting chamber 5 is installed at the lower end of the negative pressure collecting component 4, the negative pressure collecting component 4 is used to generate negative pressure, and the negative pressure collecting component 4 is used to suck the krill from the krill collecting component 2 and input it into the krill collecting chamber 5.

[0034] The fishing net 1 is dragged by an icebreaker to move, and the krill are collected in the fishing net 1, and the krill are collected in the krill collection component 2. The krill collection component 2 is connected to the negative pressure collection component 4 through a pump suction pipe 3. The negative pressure is generated by the negative pressure collection component 4 to collect the krill in the negative pressure collection component 4, and then the krill are put into the krill collection bin 5, and finally the collected krill are transported to the production and processing line for processing; in the process of krill fishing, the fishing net does not need to be pulled out of the sea, thereby reducing the squeezing of the krill, thereby saving manpower, and reducing the squeezing of the krill, so that the krill can ensure the integrity of the individual morphology and improve the quality of the krill;

[0035] The krill are transported from the krill collecting assembly 2 to the negative pressure collecting assembly 4 by suction generated by negative pressure, so that the krill do not collide with the impeller of the water pump, thereby reducing the damage of the impeller to the krill, thereby ensuring the integrity of the krill individuals and improving the quality of the krill.

[0036] Reference Figure 3 , Figure 4 The krill collection assembly 2 includes a krill collection bucket 21, which is a bucket-shaped structure; a fishing net connector 22 is installed at the end of the krill collection bucket 21 with a smaller diameter, and an arc bottom plate 23 is installed at the end of the krill collection bucket 21 with a larger diameter. A krill discharge pipe 24 is installed on the side of the krill collection bucket 21, and the krill discharge pipe 24 is sealed and connected to the pump suction pipe 3;

[0037] A krill inlet is provided at the smaller end of the krill collecting bucket 21, and a fishing net connector 22 is installed at the krill inlet. When krill enter the krill collecting bucket 21 from the krill inlet, the internal space becomes larger, thereby effectively preventing the krill from being squeezed in the krill collecting bucket 21, thereby reducing the damage to the krill and improving the quality of the krill.

[0038] When the krill enter the krill collecting bucket 2, the arc bottom plate 23 protrudes toward the inside of the krill collecting bucket 21, and the krill spreads around under the action of the arc bottom plate 23, thereby reducing the squeezing force between the krill;

[0039] A krill discharge pipe 24 is installed on the side of the krill collection bucket 21, and the krill discharge pipe 24 is sealed and connected to the pump suction pipe 3; the negative pressure collection component 4 generates negative pressure inside the krill collection bucket 21, so that the krill reaching the tail end of the fishing net 1 can be sucked into the krill collection bucket 21 in time, reducing the accumulation of krill at the tail end of the fishing net, reducing the squeezing of krill, and thus reducing the deformation of krill due to squeezing, thereby improving the quality of krill;

[0040] The krill entering the krill collecting bucket 21 is timely inputted from the pump suction pipe 3 into the negative pressure collecting assembly 4 , which can reduce the accumulation of krill in the krill collecting bucket 21 .

[0041] Reference Figure 5 , Figure 6 , Figure 7 The negative pressure collection assembly 4 includes a negative pressure bin 41, a sealing end cover 42 is installed on the upper side of the negative pressure bin 41, a negative pressure pump assembly 43 is installed on the sealing end cover 42, a krill feed pipe 44 is installed on the side of the negative pressure bin 41, a krill discharge assembly 45 is installed at the lower end of the negative pressure bin 41, and a filter screen 46 is installed in the negative pressure bin 41, and the filter screen 46 is used to prevent krill from entering the negative pressure pump assembly 43;

[0042] The sealing cover 42 is covered on the negative pressure chamber 41, and a relatively sealed environment is generated inside the negative pressure chamber 41 under the action of the krill discharge assembly 45. The negative pressure pump assembly 43 includes a vacuum pump 431, a water pump 432 and a liquid level sensing switch 433; the liquid level sensing switch 433 is used to control the switching between the vacuum pump 431 and the water pump 432; after the vacuum pump 431 discharges the air in the negative pressure chamber 41, water is pumped into the negative pressure chamber 41. At this time, the liquid level sensing switch 433 senses the change in liquid level and controls the water pump 432 to work, so that the krill in the krill collection bucket 21 enters the negative pressure chamber 41 together with the seawater. After the krill enters the negative pressure chamber 41, the krill remain in the negative pressure chamber 41 under the action of the filter 46, and a part of the seawater is discharged through the water pump 432. The krill that sinks to the bottom of the negative pressure chamber 41 is discharged into the krill collection chamber 5 together with the seawater through the krill discharge assembly 45.

[0043] Reference Figure 6 , Figure 7 The krill discharge assembly 45 includes a discharge chamber 451, a discharge motor 452 is installed on the discharge chamber 451, a discharge shaft 453 is rotatably installed at the center of the discharge chamber 451, a plurality of closed leaves 454 are installed on the discharge shaft 453, a side of the closed leaves 454 away from the discharge shaft 453 is in contact with the inner wall of the discharge chamber 451, and the closed leaves 454 and the discharge shaft 453 form a discharge hopper, and a discharge port 455 is installed at the lower end of the discharge chamber 451, and the discharge port 455 is connected to the krill collection bin 5;

[0044] Under the action of the closed leaf 454, the gas or liquid can be reduced from entering the negative pressure bin 41 through the discharge port 455, so that the negative pressure bin 41 can generate negative pressure under the action of the negative pressure pump assembly 43, generating suction to transport the krill from the krill collection bucket 21 to the negative pressure bin 41;

[0045] The krill entering the negative pressure chamber 41 falls into the discharge hopper formed by the closing leaf 454 and the discharge shaft 453. The discharge shaft 453 is driven to rotate by the discharge motor 452, so that the seawater and krill collected in the discharge hopper are released into the krill collection chamber 5, thereby completing the collection of the krill.

[0046] Reference Figure 5 , Figure 6 A drainage hole 51 is provided on the upper side of the krill collection bin 5, and a krill delivery pipe 52 is provided on the krill collection bin 5. The krill delivery pipe 52 is used to deliver the krill to the assembly line; when the krill enters the krill collection bin 5, the excess seawater overflows through the drainage hole 51, and the krill is delivered to the designated assembly line through the krill delivery pipe 52 for processing;

[0047] A control valve is installed on the krill delivery pipe 52, and the opening and closing of the krill delivery pipe 52 is controlled by the control valve.

[0048] Reference Figure 1 , Figure 2 The fishing net connecting member 22 includes a transverse arc rod 221 fixed on the krill collecting bucket 21, a longitudinal arc rod 222 fixed on the krill collecting bucket 21, a connecting ring 223 fixed on the end of the krill collecting bucket 21 and a connecting handle 224 fixed on the side wall of the fishing net connecting member 22; the connecting handle 224 is used to tie the fishing net 1; the longitudinal arc rod 222 and the transverse arc rod 221 are connected to each other to form a hemispherical structure;

[0049] The longitudinal arc-shaped rods 222 and the transverse arc-shaped rods 221 are crisscrossed to form a lattice structure, which can prevent larger organisms or debris from entering the krill collection bucket 21;

[0050] The longitudinal arc rods 222 and the transverse arc rods 221 are crisscrossed to form a hemispherical structure. The diameter of the connecting ring 223 is smaller than the diameters of the longitudinal arc rods 222 and the transverse arc rods 221. The fishing net 1 is tied to the connecting ring 223 with a rope, so that the fishing net can be better connected to the krill collecting bucket 21.

[0051] The longitudinal arc rods 222 and the transverse arc rods 221 are crisscrossed to form a hemispherical structure, which can support the fishing net and effectively prevent the tail of the fishing net from being blocked, causing the krill to be unable to enter the krill collection bucket 21 in time.

[0052] Reference Figure 1 , Figure 2A fishing net traction assembly 6 is installed at one end of the fishing net 1 away from the krill collection assembly 2. The fishing net traction assembly 6 includes an open bracket 61. A plurality of first traction ropes 62 are installed on the side of the open bracket 61 close to the fishing net 1. One end of the first traction rope 62 is connected to the open bracket 61, and the other end is connected to the fishing net 1; a plurality of second traction ropes 63 are installed on the side of the open bracket 61 away from the fishing net 1. A connecting locking member 64 is installed at one end of the second traction rope 63 away from the open bracket 61. The connecting locking member 64 is used to connect to the icebreaker; the open bracket 61 is a circular ring structure, and a plurality of support rods 65 are arranged on the open bracket 61. The support rods 65 are cross-connected. The open bracket 61 is arranged in a fork, and the open bracket 61 is right in front of the fishing net 1. The open bracket 61 and the support rod 65 can filter jellyfish and larger debris in the seawater to reduce the large suspended matter and jellyfish from entering the krill collection component 2 and causing blockage; at the same time, large aquatic animals are driven away to reduce the large aquatic organisms from entering the fishing net 1. A connecting locking piece 64 is installed at one end of the second traction rope 63 away from the open bracket 61, and the second traction ropes 63 form a V-shaped structure. When floating objects in the seawater come into contact with the second traction ropes 63, they slide along the second traction ropes 63 to the outer edge of the open bracket 61 under the impact of the seawater, which can effectively reduce the floating objects from entering the fishing net 1 and reduce the blockage of the krill collection component 2.

[0053] A center ring 66 is provided near the center of the support rod 65, and the center ring 66 is used to focus the seawater toward the fishing net;

[0054] When marine debris or marine plants are accumulated on the support rod 65, seawater can pass through the center ring 66. At this time, the seawater can be transported through the center ring 66 to the fishing net 1 to catch krill in the seawater.

[0055] The connecting locking member 64 includes a connecting plate fixed on the second traction rope 63 away from the opening bracket 61 and a U-shaped rod inserted into the connecting plate, and a locking nut is installed on the U-shaped rod; after the U-shaped rod is connected to the icebreaker, it is locked on the connecting plate by a nut, thereby locking the locking member on the icebreaker.

[0056] The connecting locking piece 64 is connected to the icebreaker, and the icebreaker pulls the open bracket 61 to move. The diameter of the open bracket 61 is larger than the opening of the fishing net 1. Under the action of the first traction rope 62, the fishing net 1 is in an open state, which is convenient for krill to enter the fishing net 1. At the same time, the open bracket 61 can drive away larger organisms and prevent them from entering the fishing net 1.

[0057] Reference Figure 8 A protective layer 31 is sleeved on the outside of the pump suction tube 3. The protective layer 31 is used to prevent the pump suction tube 3 from being scratched. The protective layer 31 is a fishing net, which can reduce the collision of the pump suction tube 3 and effectively prevent the pump suction tube 3 from breaking.

[0058] A vacuum continuous pumping fishing method for Antarctic krill comprises the following steps:

[0059] S1: Assembling the fishing net 1: connecting the fishing net 1 to the open bracket 61 through the first traction rope 62, connecting the open bracket 61 to the connecting locking member 64 through the second traction rope 63, and installing the connecting locking member 64 on the icebreaker;

[0060] The diameter of the open bracket 61 is larger than the diameter of the fishing net 1. One end of a plurality of first traction ropes 62 is fixed on the open bracket 61 in an array, and the other end is fixed on the fishing net 1. The first traction ropes 62 form an eight-shaped structure and surround the fishing net 1. In the process of krill fishing, large aquatic organisms can be effectively prevented from entering the fishing net 1. When the icebreaker tows the open bracket 61 and the fishing net 1 moves, the open bracket 61 can drive away large fish approaching the fishing net 1, thereby reducing the number of large fish entering the fishing net 1 and causing clogging of the krill collection component 2.

[0061] S2: Installation of krill collection bucket 21: The krill collection bucket 21 is fixedly connected to the end of the fishing net 1 away from the fishing net traction assembly 6 through the fishing net connector 22, the krill feed pipe 44 is connected to the pump suction pipe 3, and the negative pressure collection assembly 4 is connected to the krill collection bin 5 and fixed on the icebreaker;

[0062] S3: Casting of the fishing net 1: Casting the fishing net 1 and the krill collecting bucket 21 into the sea;

[0063] First, the krill collecting bucket 21 is placed into the sea, and then the fishing net 1 and the fishing net traction assembly 6 are placed into the sea in sequence, and the fishing net 1 is towed forward by the icebreaker to allow the krill to enter the fishing net 1;

[0064] S4: Krill fishing: The fishing net 1 is dragged by the icebreaker to move. After the krill are gathered at the tail end of the fishing net 1, negative pressure is generated in the negative pressure chamber 41 by the negative pressure pump assembly 43. Under the action of the negative pressure, the pump suction pipe 3 draws the krill in the krill collection bucket 21 into the negative pressure chamber 41;

[0065] When the fishing net 1 moves, the krill gather at the tail end of the fishing net 1, and the negative pressure pump assembly 43 starts to work. When the negative pressure pump assembly 43 is working, the vacuum pump 431 discharges the air in the negative pressure chamber 41 and pumps water into the negative pressure chamber 41. At this time, the liquid level sensor switch 433 senses the change in liquid level and controls the water pump 432 to work, so that the krill in the krill collection bucket 21 enters the negative pressure chamber 41 along with the seawater. After the krill enters the negative pressure chamber 41, the krill remain in the negative pressure chamber 41 under the action of the filter 46, and a part of the seawater is discharged through the water pump 432. The krill that sinks to the bottom of the negative pressure chamber 41 is discharged into the krill collection chamber 5 together with the seawater through the krill discharge assembly 45;

[0066] Under the action of the closed leaf 454, the gas or liquid can be reduced from entering the negative pressure bin 41 through the discharge port 455, so that the negative pressure bin 41 can generate negative pressure under the action of the negative pressure pump assembly 43, generating suction to transport the krill from the krill collection bucket 21 to the negative pressure bin 41;

[0067] The krill entering the negative pressure chamber 41 falls into the discharge hopper formed by the closing leaf 454 and the discharge shaft 453. The discharge shaft 453 is driven to rotate by the discharge motor 452, so that the seawater and krill collected in the discharge hopper are released into the krill collection chamber 5, thereby completing the collection of the krill.

[0068] S5: Krill collection: The krill are put into the krill collection bin 5 through the krill discharge assembly 45, and the excess seawater is discharged through the drainage hole 51 provided on the upper side of the krill collection bin 5. The krill are stored in the krill collection bin 5 and transported to the assembly line for processing and production through the krill transport pipe 52.

[0069] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A negative pressure continuous pumping device for Antarctic krill, characterized in that: The invention comprises a fishing net (1), wherein a krill collection assembly (2) is installed at the tail end of the fishing net (1), a pump suction pipe (3) is installed on the krill collection assembly (2), a negative pressure collection assembly (4) is installed at one end of the pump suction pipe (3) away from the krill collection assembly (2), a krill collection chamber (5) is installed at the lower end of the negative pressure collection assembly (4), the negative pressure collection assembly (4) is used to generate negative pressure, and the negative pressure collection assembly (4) is used to suck krill from the krill collection assembly (2) and input it into the krill collection chamber (5); the krill collection assembly (2) comprises a krill collection bucket (21), and the krill collection bucket (21) is a bucket-shaped structure; The end of the krill collection bucket (21) with a smaller diameter is equipped with a fishing net connecting piece (22), the end of the krill collection bucket (21) with a larger diameter is equipped with an arc-shaped bottom plate (23), a krill discharge pipe (24) is installed on the side of the krill collection bucket (21), and the krill discharge pipe (24) is sealedly connected to the pump suction pipe (3); the negative pressure collection assembly (4) comprises a negative pressure bin (41), a sealing end cover (42) is installed on the upper side of the negative pressure bin (41), a negative pressure pump assembly (43) is installed on the sealing end cover (42), a krill feed pipe (44) is installed on the side of the negative pressure bin (41), and a krill discharge pipe (24) is installed on the lower side of the negative pressure bin (41). A krill discharge assembly (45) is installed at the end of the negative pressure chamber (41); a filter screen (46) is installed in the negative pressure chamber (41); the filter screen (46) is used to prevent krill from entering the negative pressure pump assembly (43); the negative pressure pump assembly (43) comprises a vacuum pump (431), a water pump (432) and a liquid level sensing switch (433); the liquid level sensing switch (433) is used to control the switching between the vacuum pump (431) and the water pump (432); the krill discharge assembly (45) comprises a discharge chamber (451); a discharge motor (452) is installed on the discharge chamber (451); a discharge shaft (453) is rotatably installed at the center of the discharge chamber (451) A plurality of closed leaves (454) are mounted on the discharge shaft (453); a side of the closed leaves (454) away from the discharge shaft (453) contacts the inner wall of the discharge chamber (451); the closed leaves (454) and the discharge shaft (453) form a discharge hopper; a discharge port (455) is mounted at the lower end of the discharge chamber (451); the discharge port (455) is connected to the krill collection bin (5); a drainage hole (51) is arranged on the upper side of the krill collection bin (5); a krill conveying pipe (52) is arranged on the krill collection bin (5); the krill conveying pipe (52) is used to convey the krill to the assembly line.

2. The Antarctic krill negative pressure continuous pumping device according to claim 1, characterized in that: The fishing net connecting member (22) comprises a transverse arc-shaped rod (221) fixed on the krill collecting bucket (21), a longitudinal arc-shaped rod (222) fixed on the krill collecting bucket (21), a connecting ring (223) fixed on the end of the krill collecting bucket (21), and a connecting handle (224) fixed on the side wall of the fishing net connecting member (22); the connecting handle (224) is used for tying the fishing net (1); the longitudinal arc-shaped rod (222) and the transverse arc-shaped rod (221) are connected to each other to form a hemispherical structure.

3. The Antarctic krill negative pressure continuous pumping device according to claim 1, characterized in that: A fishing net traction assembly (6) is installed at one end of the fishing net (1) away from the krill collection assembly (2), and the fishing net traction assembly (6) comprises an open bracket (61), and a plurality of first traction ropes (62) are installed on a side of the open bracket (61) close to the fishing net (1), one end of the first traction rope (62) is connected to the open bracket (61), and the other end is connected to the fishing net (1); a plurality of second traction ropes (63) are installed on a side of the open bracket (61) away from the fishing net (1), and a connecting locking member (64) is installed at one end of the second traction rope (63) away from the open bracket (61), and the connecting locking member (64) is used to connect to an icebreaker; a plurality of support rods (65) are arranged on the open bracket (61), and the support rods (65) are arranged crosswise; a center ring (66) is arranged near the center of the support rod (65), and the center ring (66) is used to focus seawater on the opening of the fishing net (1).

4. The Antarctic krill negative pressure continuous pumping device according to claim 1, characterized in that: A protective layer (31) is sleeved on the outside of the pump suction tube (3), and the protective layer (31) is used to prevent the pump suction tube (3) from being scratched.

5. A vacuum continuous pumping fishing method for Antarctic krill, applied to an Antarctic krill negative pressure continuous pumping device as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1: Assembling the fishing net (1): connecting the fishing net (1) to the open bracket (61) via a first traction rope (62), connecting the open bracket (61) to a connecting locking member (64) via a second traction rope (63), and installing the connecting locking member (64) on the icebreaker; S2: Installation of the krill collection bucket (21): The krill collection bucket (21) is fixedly connected to one end of the fishing net (1) away from the fishing net traction assembly (6) via the fishing net connecting piece (22), the krill feed pipe (44) is connected to the pump suction pipe (3), and the negative pressure collection assembly (4) is connected to the krill collection chamber (5) and fixed on the icebreaker; S3: placing the fishing net (1): placing the fishing net (1) and the krill collecting bucket (21) into the sea; S4: Krill fishing: The fishing net (1) is dragged by an icebreaker, and after the krill are gathered at the tail end of the fishing net (1), a negative pressure is generated in the negative pressure chamber (41) through a negative pressure pump assembly (43). Under the action of the negative pressure, the pump suction pipe (3) draws the krill in the krill collection bucket (21) into the negative pressure chamber (41); S5: Krill collection: The krill are placed into the krill collection bin (5) through the krill discharge assembly (45), and the excess seawater is discharged through the drainage hole (51) provided on the upper side of the krill collection bin (5). The krill are stored in the krill collection bin (5) and transported to the production line for processing through the krill transport pipe (52).

Images