A bottom discharge-lifting type juvenile fish catching device for factory farming

Abstract

The application relates to a bottom discharge-lifting type fish growing and catching device, which comprises a closed fish collecting box; the closed fish collecting box comprises a fish collecting box shell, an inclined downward inclined table is arranged at one end of the fish collecting box shell, an fish collecting cavity is arranged above the inclined table, the top plate of the fish collecting cavity is an inclined downward transparent observation plate, the fish collecting cavity is communicated with the fish collecting box shell through a fish filtering plate, at least one side of the fish collecting cavity is communicated with a fish discharging passage device of a breeding pond through a fish inlet pipe; a fish guiding cover shell is arranged at the low part of the fish collecting cavity, the fish guiding cover shell is connected to the fish discharging passage outside; a fish collecting box water outlet pipe and a water pump are arranged at the other end of the fish collecting box shell; when discharging the fish, the water pump on the fish collecting box water outlet pipe is first started, after the fish enter the inside of the fish collecting cavity of the closed fish collecting box, the fish density in the fish collecting cavity is detected by a visual detection device, when the fish density reaches a set value, the fish discharging operation of the fish collecting cavity is automatically started by a control system, and the water pump is closed.

Description

Technical Field

[0001] The invention relates to a fish catching device, in particular to a bottom row-lifting fish catching device for factory farming, belonging to the technical field of fish catching in factory aquaculture. Background Art

[0002] In factory aquaculture, traditional methods for collecting adult fish include manual netting, fish pump extraction, and electrocution. These methods can cause significant physical damage to the fish during the harvesting process and can cause significant stress reactions in the fish, affecting their survival rate and quality. The harvesting process is also difficult, has a low degree of automation, and is labor-intensive. Therefore, the challenge of harvesting adult fish lies in balancing harvesting efficiency, fish damage, operational difficulty, and cost control. Addressing these challenges typically requires the combined use of multiple harvesting techniques, combined with advanced management measures and equipment, to achieve efficient, low-loss, and intelligent harvesting operations.

[0003] The current factory-farmed fish suction capture devices have the following shortcomings:

[0004] 1. In the prior art, the suction capture device for factory-farmed adult fish usually adopts the form of a fish suction pump. Before suction capture, the adult fish in the breeding pond need to be manually rounded up and concentrated in advance, which is difficult to operate. The catch often cannot be completely collected at one time, and the suction capture efficiency is low.

[0005] 2. Existing factory-farmed fish suction capture devices lack efficient and centralized means for catching fish. Instead, they often increase the water pump head to increase the negative pressure at the fish suction port. This can easily lead to fish being squeezed, rubbed, and damaged by collisions within the suction capture device's pipes, causing significant stress reactions in the fish, and affecting the survival rate and quality of the captured fish.

[0006] 3. The existing factory-farmed fish suction capture devices cannot autonomously adjust their operation according to the fish density, and their intelligence level is low.

[0007] 4. In the prior art, the pump chamber of the fish suction pump of the factory-based fish suction capture device is usually a closed high-pressure structure, which lacks flexibility, is easy to cause damage to the fish body, and has low energy utilization rate. Summary of the Invention

[0008] The purpose of the present invention is to provide a bottom row-lifting type adult fish suction capture device for factory farming to solve the above technical problems.

[0009] The present invention adopts the following technical solutions:

[0010] A bottom-discharge and lifting type adult fish suction capture device for factory farming, comprising a breeding pond 1, a fish discharge channel device 2, a closed fish collection box 3, and a visual detection device 305; the closed fish collection box 3 comprises a fish collection box housing 301, a downwardly inclined inclined platform 302 is provided adjacent to one end of the fish collection box housing 301, a fish collection cavity is provided above the inclined platform 302, the top plate of the fish collection cavity is a downwardly inclined transparent observation plate 304, the fish collection cavity is connected to the fish collection box housing 301 through a fish filter plate 308, and at least one side of the fish collection cavity is connected to the fish discharge channel device 2 of the breeding pond 1 through a fish inlet pipe 307. connected; a fish guide cover 303 is provided at the lower part of the fish collecting cavity, and the fish guide cover 303 is connected to the external fish discharge channel; a fish collecting tank outlet pipe 309 and a water pump 310 are provided adjacent to the other end of the fish collecting box shell 301; when draining fish, the water pump 310 on the fish collecting box outlet pipe 309 is first turned on, and after the adult fish enter the interior of the fish collecting cavity of the closed fish collecting box 3, the visual detection device 305 detects the density of adult fish in the fish collecting cavity. When the fish density reaches the set value, the control system automatically starts the fish discharge operation of the fish collecting cavity and turns off the water pump 310.

[0011] Preferably, a camera fixing bracket 306 is provided on the top of the closed fish collecting box 3 so that the camera is tilted downwardly and aligned with the transparent observation plate 304 .

[0012] Preferably, a fish collecting box outlet pipe 309, a water pump 310 and an external water outlet channel 311 are provided at the lower part of the other end of the closed fish collecting box 3; the fish inlet pipe 307 is fixedly provided on both sides of the fish collecting box shell 301, and the fish inlet pipe 307 is fixed to the fish discharge channel device 2 connected to the two sets of breeding ponds 1; a fish discharge solenoid valve 401 is fixedly installed at one end of the fish guide cover shell 303.

[0013] Preferably, a bladeless jet fish lifting pump 5 is further included, which is arranged on the external fish discharge channel and connected to the fish discharge cover 405 through a lifting pipe 404.

[0014] Furthermore, the bladeless jet fish pump 5 is also connected to the booster pump 403 , and the booster pump 403 is also connected to the external water supply pipe 406 .

[0015] Preferably, the fish drainage channel device 2 includes a shell 201, a glass cylinder 202, a bottom drain pipe 203, a perforated plate 204, a water guide cover 205, a fish drainage pipe 206 and a bottom drainage solenoid valve 207. The top of the shell 201 is fixedly connected to the bottom drain port position of the breeding pond 1, and the glass cylinder 202 is fixedly installed on the lower side of the inner surface of the shell 201. The upper end of the telescopic top rod of the glass cylinder 202 is fixedly connected to the perforated plate 204. The central area of ​​the perforated plate 204 is solid, and water outlet holes are opened in some areas around it. The bottom of one side of the shell 201 is fixedly connected to the bottom drainage pipe 203, and the bottom drainage pipe 203 is connected to the circulating aquaculture system. The upper part of one side of the shell 201 is fixedly connected to the water guide cover 205. One end of the water guide cover 205 is fixedly connected to the fish drainage pipe 206. The other end of the fish drainage pipe 206 is threadedly connected to the bottom drainage solenoid valve. One side of the bottom drainage solenoid valve is fixedly connected to the closed fish collecting box 3.

[0016] Preferably, the closed fish collecting box 3 is connected to a set of fish discharge channel devices 2 of a fish breeding pond through fish inlet pipes 307 on both sides.

[0017] Furthermore, the height difference between the bottom of the fish draining channel device 2 and the upper surface of the closed fish collecting box 3 is 1.5-2m.

[0018] Preferably, the inclined platform 302 is at an angle of 55° to the horizontal plane.

[0019] Furthermore, the upper surface of the fish collecting box shell 301 is threadedly connected to the camera fixing bracket 306, and the bladeless jet fish pump 5 includes a jet pump guide vane 501, a booster pump water inlet pipe 502 and a bladeless jet pump chamber 503. The jet pump guide vane 501 is fixedly connected to the slide pipe 402 at one end close to the closed fish collecting box 3, and one end of the slide pipe 402 is threadedly connected to the fish discharge solenoid valve 401, and the jet pump guide vane 501 is away from the fish discharge solenoid valve. One side of 401 is welded to the bladeless jet pump chamber 503, one end of the bladeless jet pump chamber 503 is fixedly provided with a booster pump water inlet pipe 502, one end of the booster pump water inlet pipe 502 is fixedly connected to the booster pump 403, one end of the booster pump 403 is fixedly connected to the external water supply pipe 406, one side of the bladeless jet pump chamber 503 is fixedly connected to the lifting pipe 404, and one end of the lifting pipe 404 is fixedly connected to the fish outlet cover shell 405.

[0020] The beneficial effects of the present invention are:

[0021] 1. No need to drive fish away, easy to gather fish; the catch can be completely collected at one time, with high suction efficiency;

[0022] 2. The water pump head can be low, and the negative pressure at the fish suction port can be low. Therefore, it is not easy for fish to be squeezed, rubbed, or damaged by collision in the pipe of the suction capture device, which can avoid the stress reaction of the fish school and improve the survival rate and quality of the fish after suction capture.

[0023] 3. It can autonomously adjust the operation process according to the density of fish schools, with a high degree of intelligence;

[0024] 4. The pump chamber pressure of the fish suction pump is low, the flexibility is good, it is not easy to cause damage to the fish body and the energy utilization rate is high.

[0025] 5. The design of the closed fish collecting box is quite clever. One end of the box is set as the fish outlet and the other end is set as the water pumping end, which can achieve the concentration of fish and prevent the fish from having a stress reaction.

[0026] 6. The design of the fish drainage channel device is quite ingenious. Before catching adult fish, the telescopic top rod of the glass cylinder is in an extended state, and the bottom drainage solenoid valve is closed, so that the water circulation in the fish pond mainly flows to the breeding system through the bottom drainage pipe. When catching adult fish, the telescopic top rod of the glass cylinder is started to shorten downward, the perforated plate moves downward until it clamps the bottom boss of the shell, and the bottom drainage solenoid valve is opened. At this time, since the holes of the perforated plate are blocked, the water cannot pass through. Under the action of the liquid level difference, the water and adult fish in the breeding pond will be discharged to the closed fish collecting box at the bottom of the fish pond through the water guide cover and the fish drainage pipe. The bottom drainage fish collection method is used instead of the fish pond enclosure method, which enhances the convenience of the adult fish suction operation process and improves the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an axonometric diagram of the bottom row-lift type adult fish suction capture device for factory farming of the present invention;

[0028] Figure 2 This is a front view of the bottom row-lift type adult fish suction capture device for factory farming of the present invention;

[0029] Figure 3 yes Figure 1 A diagram showing the structure of the middle part.

[0030] Figure 4 It is an upward axonometric view of a fish farming tank;

[0031] Figure 5 It is a side view of the location of the fish channel device;

[0032] Figure 6 This is a cross-sectional view of the location of the fish drainage channel device;

[0033] Figure 7 It is a side view of the closed fish collection box;

[0034] Figure 8It is a cross-sectional view of a closed fish collection box;

[0035] Figure 9 It is an axonometric view of an enclosed fish collection box;

[0036] Figure 10 It is an axonometric view of the closed fish collecting box and its connecting structure at one end;

[0037] Figure 11 Schematic diagram of a bladeless jet fish pump; (a) is an axial perspective view, and (b) is an AA cross-sectional view in (a).

[0038] Figure 12 This is an axonometric view of a bladeless jet fish pump.

[0039] Description of reference numerals:

[0040] 1-breeding pond; 2-fish drainage channel device; 201-housing; 202-glass cylinder; 203-bottom drain pipe; 204-perforated plate; 205-water guide cover; 206-fish drainage pipe; 3-enclosed fish collection box; 301-fish collection box housing; 302-inclined platform; 303-fish guide cover; 304-transparent observation plate; 305-visual detection device; 306-camera fixing bracket; 307-inlet Fish pipe; 308-fish filter plate; 309-fish collection box outlet pipe; 310-water pump; 311-external water outlet channel; 401-fish discharge solenoid valve; 402-slideway pipe; 403-boost pump; 404 lifting pipe; 405-fish outlet cover; 406-external water supply pipe; 5-bladeless jet fish lifting pump; 501-jet pump guide vane; 502-boost pump water inlet pipe; 503-bladeless jet pump chamber. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] In order to fully understand the present invention, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present invention. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0043] Reference Figure 1-12 As shown, the present invention provides a bottom-row and lifting type adult fish suction capture device for factory farming, which mainly includes a farming pond 1, a fish discharge channel device 2, a closed fish collection box 3, a visual detection device 305, and a bladeless jet fish lifting pump 5.

[0044] Fish channel device 2:

[0045] like Figure 1-6As shown, the fish drainage channel device 2 includes a housing 201, a glass cylinder 202, a bottom drainage pipe 203, a perforated plate 204, a water guide cover 205, a fish drainage pipe 206 and a bottom drainage solenoid valve 207. The top of the housing 201 is fixedly connected to the bottom drainage port of the culture pond 1. The glass cylinder 202 is fixedly installed on the lower side of the inner surface of the housing 201. The upper end of the telescopic top rod of the glass cylinder 202 is fixedly connected to the perforated plate 204. The center of the perforated plate 204 is fixedly connected to the bottom drainage port of the culture pond 1. The area is solid, and water outlet holes are opened in some areas around it. The bottom of one side of the shell 201 is fixedly connected to the bottom drain pipe 203, and the bottom drain pipe 203 is connected to the circulating aquaculture system. The upper part of one side of the shell 201 is fixedly connected to the water guide cover shell 205, and one end of the water guide cover shell 205 is fixedly connected to the fish drainage pipe 206. The other end of the fish drainage pipe 206 is threadedly connected to the bottom drainage solenoid valve 207, and one side of the bottom drainage solenoid valve 207 is fixedly connected to the closed fish collecting box 3. Before catching adult fish, the telescopic top rod of the glass cylinder 202 is in an extended state, and the bottom discharge solenoid valve 207 is closed, so that the water circulation in the fish pond mainly flows to the breeding system through the bottom drainage pipe 203. When catching adult fish, the telescopic top rod of the glass cylinder 202 is started to shorten downward, the perforated plate 204 moves downward until it clamps the bottom boss of the shell 201, and the bottom discharge solenoid valve 207 is opened. At this time, since the holes of the perforated plate 204 are blocked, the water flow cannot pass through. Under the action of the liquid level difference, the water and adult fish in the breeding pond will be discharged to the closed fish collecting box 3 at the bottom of the fish pond through the water guide cover 205 and the fish discharge pipe 206. The bottom drainage fish collection method is used instead of the fish pond enclosure method, which enhances the convenience of the adult fish suction capture operation process and improves the operation efficiency.

[0046] Closed fish collection box 3:

[0047] like Figure 7-10As shown, the closed fish collecting box 3 includes a fish collecting box shell 301, an inclined platform 302, a fish guide cover 303, a transparent observation plate 304, a visual detection device 305, a camera fixing frame 306, a fish inlet pipe 307, a fish filter plate 308, a fish collecting box outlet pipe 309, a water pump 310 and an external water outlet channel 311. The two sides of the fish collecting box shell 301 are respectively fixed with fish inlet pipes 307, which are fixed to the fish discharge channel device 2 connected to the two sets of fish ponds. The inclined platform 302 is fixedly installed on one side of the inner surface of the fish collecting box shell 301. The side of the fish collecting box shell 301 is fixedly connected to a fish filter plate 308, the side of the fish collecting box shell 301 close to the inclined platform 302 is threadedly connected to the fish guide cover shell 303, one end of the fish guide cover shell 303 is fixedly installed with a fish discharge solenoid valve 401, the upper surface of the fish collecting box shell 301 is threadedly connected to a transparent observation plate 304, and the side of the fish collecting box shell 301 away from the inclined platform 302 is fixedly installed with a fish collecting box water outlet pipe 309, one end of the fish collecting box water outlet pipe 309 is fixedly connected to a water pump 310, and the other end of the water pump 310 is fixedly connected to an external water outlet channel 311. When the fish discharge channel device 2 is opened, the water and adult fish in the breeding pond will continuously flow into the fish collecting box shell 301 through the fish inlet pipe 307. Under the action of the fish filter plate 308, the catch will be concentrated in the cavity area above the inclined platform 302. At this time, the fish discharge solenoid valve 401 is in a closed state. Since the closed fish collecting box 3 is a closed structure, the incoming water flow will not overflow to the outside of the device, thereby improving the safety of the suction and capture operation. When the water pump 310 is turned on, the water flow is pumped out to the external water outlet channel 311 through the fish collecting box outlet pipe 309, and a certain negative pressure will be generated, driving the fish-water mixture in the breeding pond 1 to slowly flow to the closed fish collecting box 3, thereby reducing the damage to the fish in the suction and capture pipe and the stress response of the fish school.

[0048] Bladeless jet fish pump 5:

[0049] like Figure 10-12As shown, the upper surface of the fish collecting box shell 301 is threadedly connected to the camera fixing bracket 306, and the lower end of the camera fixing bracket 306 is fixedly connected to the visual detection device 305. The bladeless jet fish pump 5 includes a jet pump guide vane 501, a booster pump water inlet pipe 502 and a bladeless jet pump chamber 503. The end of the jet pump guide vane 501 close to the closed fish collecting box 3 is fixedly connected to the slide pipe 402, and one end of the slide pipe 402 is threadedly connected to the fish discharge solenoid valve 401. The jet pump guide vane 5 01 is welded to the bladeless jet pump chamber 503 on one side away from the fish discharge solenoid valve 401, and a booster pump water inlet pipe 502 is fixedly arranged at one end of the bladeless jet pump chamber 503, and a booster pump 403 is fixedly connected at one end of the booster pump water inlet pipe 502, and an external water supply pipe 406 is fixedly connected at one end of the booster pump 403, and a lifting pipe 404 is fixedly connected at one side of the bladeless jet pump chamber 503, and a fish outlet cover 405 is fixedly connected at one end of the lifting pipe 404. After entering the fish collecting box 3, the visual detection device 305 detects the density of adult fish in the closed fish collecting box 3. When the fish density reaches the set value, the system automatically opens the fish discharge solenoid valve 401 and the booster pump 403 and closes the water pump 310. The fish and water flow will flow from the upper surface of the inclined platform 302 through the fish guide cover 303 into the slide pipe 402. The structure of the bladeless jet fish pump 5 is designed based on the principle of fluid multiplication technology. When the water delivered by the booster pump 403 flows into the bladeless jet pump chamber 503, the water will flow into the slide pipe 402. The jet gap in the bladeless jet pump chamber 503 will generate a high-speed jet, so that the water flow behind the jet gap will generate kinetic energy, thereby generating a lifting force. The fish school is lifted to the fish outlet cover 405 area through the lifting pipe 404, and the bottom discharge-lifting adult fish suction capture operation is completed. The operation of the device only requires opening the channel valve and the water pump in sequence according to the flow process of the fish school, which improves the convenience of the suction capture operation, and the system can automatically control the suction capture interval according to the fish school density, thereby improving the intelligence of the adult fish suction capture device.

[0050] Principle description:

[0051] 1. A glass cylinder is fixedly installed on the lower side of the inner surface of the shell of the fish drainage channel device, an open plate is fixedly connected to the upper end of the telescopic top rod of the glass cylinder, a bottom drainage pipe is fixedly connected to the bottom of one side of the shell, a fish drainage pipe is fixedly connected to the upper part of one side of the shell, a bottom drainage solenoid valve is threadedly connected to the other end of the fish drainage pipe, and a closed fish collecting box is fixedly connected to one side of the bottom drainage solenoid valve. By controlling the bottom drainage solenoid valve and the glass cylinder, the water and adult fish in the breeding pond will be discharged to the closed fish collecting box at the bottom of the fish pond through the water guide cover shell and the fish drainage pipe. The bottom drainage fish collection method is used instead of the fish pond enclosure method, which enhances the convenience of the adult fish suction and capture operation process and improves the operation efficiency.

[0052] 2. By fixing two sets of fish drainage channel devices for the fish ponds on both sides of the fish collecting box shell, an inclined platform is fixedly installed on one side of the inner surface of the fish collecting box shell, a fish filter plate is fixedly connected to one side of the inclined platform, a fish drainage solenoid valve is fixedly installed on the side of the fish collecting box shell close to the inclined platform, and a water pump is fixedly connected to one end of the fish collecting box shell. When the fish drainage channel device is opened, the water and adult fish in the breeding pond will continuously flow into the fish collecting box shell through the fish inlet pipe, and the catch will be concentrated in the cavity area on the upper part of the inclined platform. When the water pump is turned on, the water flows through the water outlet pipe of the fish collecting box and is pumped out to the external water outlet channel, and a certain negative pressure will be generated, driving the fish-water mixture in the breeding pond to slowly flow to the closed fish collecting box, reducing the damage to the fish body in the suction and capture pipe and the stress response of the fish school, and at the same time, the adult fish in the two breeding ponds can be extracted, thereby improving the operation efficiency.

[0053] 3. By fixing a visual detection device on the upper surface of the fish collecting box shell, welding a bladeless jet pump chamber on one side of the jet pump guide vane, fixing a booster pump on one end of the bladeless jet pump chamber, and fixing a lifting pipe on one side of the bladeless jet pump chamber, after the adult fish enter the closed fish collecting box, the visual detection device detects the density of adult fish in the closed fish collecting box. When the fish density reaches the set value, the system automatically opens the fish discharge solenoid valve and the booster pump and closes the water pump. The bladeless jet fish lifting pump structure adopts the fluid multiplication technology design principle. According to the design, when the water delivered by the booster pump flows into the bladeless jet pump chamber, the jet gap in the bladeless jet pump chamber will generate a high-speed jet, so that the water flow behind the jet gap will generate kinetic energy, thereby generating a lifting force. The fish are lifted to the fish outlet housing area through the lifting pipe, thus completing the bottom discharge-lifting adult fish suction capture operation. The operation of the device only requires opening the channel valve and the water pump in sequence according to the flow process of the fish school, which improves the convenience of the suction capture operation, and the system can automatically control the suction capture interval according to the fish school density, thereby improving the intelligence of the adult fish suction capture device.

[0054] In summary, the present invention:

[0055] 1) A fish passage device is cleverly designed. The top of the device is fixedly connected to the bottom drain outlet of the culture pond. A glass cylinder is fixedly installed on the lower side of the inner surface of the shell. A perforated plate is fixedly connected to the upper end of the telescopic top rod of the glass cylinder. The central area of ​​the perforated plate is solid, and water outlet holes are opened in some areas around it. A bottom drain pipe is fixedly connected to the bottom of one side of the shell, and the bottom drain pipe is connected to the circulating water culture system. A water guide cover is fixedly connected to the upper part of one side of the shell, and a fish drainage pipe is fixedly connected to one end of the water guide cover. A bottom drainage solenoid valve is threadedly connected to the other end of the fish drainage pipe. A closed fish collecting box is fixedly connected to one side of the bottom drainage solenoid valve. Before catching adult fish, the telescopic top rod of the glass cylinder is in an extended state, and the bottom discharge solenoid valve is closed, so that the water circulation in the fish pond mainly flows to the breeding system through the bottom drainage pipe. When catching adult fish, the telescopic top rod of the glass cylinder is started to shorten downward, the perforated plate moves downward until it clamps the bottom boss of the shell, and the bottom discharge solenoid valve is opened. At this time, since the holes of the perforated plate are blocked, the water flow cannot pass through. Under the action of the liquid level difference, the water and adult fish in the breeding pond will be discharged to the closed fish collecting box at the bottom of the fish pond through the water guide cover and the fish discharge pipe. The bottom drainage fish collection replaces the fish pond enclosure form, which enhances the convenience of the adult fish suction capture operation process and improves the operation efficiency.

[0056] 2) Fish inlet pipes are fixedly provided on both sides of the closed fish collecting box shell, which are fixed to the fish discharge channel device connected to at least two sets of fish ponds; an inclined platform is fixedly installed on one side of the inner surface of the fish collecting box shell; a fish filter plate is fixedly connected to one side of the inclined platform; a fish discharge solenoid valve is threadedly connected to the side of the fish collecting box shell close to the inclined platform; a transparent observation plate is threadedly connected to the upper surface of the fish collecting box shell; a fish collecting box water outlet pipe is fixedly installed on the side of the fish collecting box shell away from the inclined platform; and a water pump is fixedly connected to one end of the fish collecting box water outlet pipe. When the fish discharge channel device is opened, the water and adult fish in the breeding pond will continuously flow into the fish collecting box shell through the fish inlet pipe. Under the action of the fish filter plate, the catch will be concentrated in the cavity area on the upper part of the inclined platform. At this time, the fish discharge solenoid valve is in a closed state. Since the closed fish collecting box is a closed structure, the incoming water will not overflow to the outside of the device, which improves the safety of the suction operation. When the water pump is turned on, the water will be pumped out to the external water outlet channel through the fish collecting box outlet pipe, and a certain negative pressure will be generated, driving the fish-water mixture in the breeding pond to slowly flow to the closed fish collecting box, realizing flexible suction operation, reducing the damage to the fish in the suction pipe and the stress response of the fish school.

[0057] 3) A visual detection device is fixedly connected to the upper surface of the fish collecting box shell, and the side of the jet pump guide vane away from the fish discharge solenoid valve is welded to the bladeless jet pump chamber. A booster pump is fixedly arranged at one end of the bladeless jet pump chamber, and a lifting pipe is fixedly connected to one side of the bladeless jet pump chamber. After the adult fish enter the closed fish collecting box, the visual detection device detects the density of adult fish in the closed fish collecting box. When the fish density reaches the set value, the system automatically opens the fish discharge solenoid valve and the booster pump and closes the water pump. The fish and water will flow from the upper surface of the inclined platform through the fish guide cover into the slide pipe. The principle design adopts fluid multiplication technology. When the water flow delivered by the booster pump flows into the bladeless jet pump chamber, the jet gap in the bladeless jet pump chamber will generate a high-speed jet, so that the water flow behind the jet gap will generate kinetic energy, thereby generating a lifting force. The fish are lifted to the fish outlet housing area through the lifting pipe, thus completing the bottom discharge-lifting adult fish suction capture operation. The operation of the device only requires opening the channel valve and the water pump in sequence according to the flow process of the fish school, which improves the convenience of the suction capture operation. The system can automatically control the suction capture interval according to the fish school density, which improves the intelligence level of the adult fish suction capture device.

[0058] The above are preferred embodiments of the present invention. Those skilled in the art may also make various changes or improvements thereon. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. A bottom-row and lifting type adult fish suction capture device for factory farming, characterized by: It comprises a breeding pond (1), a fish discharge channel device (2), a closed fish collection box (3), and a visual detection device (305); The closed fish collecting box (3) comprises a fish collecting box shell (301), a downwardly inclined platform (302) is provided adjacent to one end of the fish collecting box shell (301), a fish collecting cavity is provided above the inclined platform (302), the top plate of the fish collecting cavity is a downwardly inclined transparent observation plate (304), the fish collecting cavity is communicated with the fish collecting box shell (301) through a fish filter plate (308), and at least one side of the fish collecting cavity is communicated with the fish discharge channel device (2) of the breeding pond (1) through a fish inlet pipe (307); a fish guide cover (303) is provided at the lower part of the fish collecting cavity, and the fish guide cover (303) is connected to the fish discharge channel connected to the outside; A fish collecting box water outlet pipe (309) and a water pump (310) are provided adjacent to the other end of the fish collecting box housing (301); When draining fish, the water pump (310) on the water outlet pipe (309) of the fish collecting box is first turned on. After the adult fish enter the fish collecting cavity of the closed fish collecting box (3), the density of the adult fish in the fish collecting cavity is detected by the visual detection device (305). When the fish density reaches a set value, the control system automatically starts the fish draining operation of the fish collecting cavity and turns off the water pump (310).

2. The bottom row and lifting type adult fish suction capture device for factory farming according to claim 1, characterized in that: A camera fixing frame (306) is provided on the top of the closed fish collecting box (3), so that the camera is tilted downwardly and aligned with the transparent observation plate (304).

3. The bottom row and lifting type adult fish suction capture device for factory farming according to claim 1, characterized in that: The lower part of the other end of the closed fish collecting box (3) is provided with a fish collecting box outlet pipe (309), a water pump (310) and an external water outlet channel (311); the fish inlet pipes (307) are fixedly provided on both sides of the fish collecting box shell (301), and the fish inlet pipes (307) are fixed to the fish discharge channel devices (2) connected to the two sets of breeding ponds (1); and a fish discharge solenoid valve (401) is fixedly installed on one end of the fish guide cover shell (303).

4. The bottom row and lifting type adult fish suction capture device for factory farming according to claim 1, characterized in that: It also includes a bladeless jet fish lifting pump (5), which is arranged on the external fish discharge channel and connected to the fish discharge housing (405) through a lifting pipe (404).

5. The bottom row and lifting type adult fish suction capture device for factory farming according to claim 4, characterized in that: The bladeless jet fish pump (5) is also connected to a booster pump (403), and the booster pump (403) is also connected to an external water supply pipe (406).

6. The bottom row and lifting type adult fish suction capture device for factory farming according to claim 1, characterized in that: The fish drainage channel device (2) comprises a housing (201), a glass cylinder (202), a bottom drainage pipe (203), a perforated plate (204), a water guide housing (205), a fish drainage pipe (206) and a bottom drainage solenoid valve (207). The top of the housing (201) is fixedly connected to the bottom drainage port of the culture pond (1). The glass cylinder (202) is fixedly mounted on the lower side of the inner surface of the housing (201). The upper end of the telescopic top rod of the glass cylinder (202) is fixedly connected to the perforated plate (204). The perforated plate ( The central area of ​​the housing (204) is solid, and water outlet holes are provided in some areas around it. The bottom of one side of the housing (201) is fixedly connected to the bottom drainage pipe (203), and the bottom drainage pipe (203) is connected to the circulating aquaculture system. The upper part of one side of the housing (201) is fixedly connected to the water guide cover (205), one end of the water guide cover (205) is fixedly connected to the fish drainage pipe (206), and the other end of the fish drainage pipe (206) is threadedly connected to the bottom drainage solenoid valve, and one side of the bottom drainage solenoid valve is fixedly connected to the closed fish collecting box (3).

7. The bottom row and lifting type adult fish suction capture device for factory farming according to claim 1, characterized in that: The closed fish collecting box (3) is connected to a set of fish draining channel devices (2) of a fish breeding pond through fish inlet pipes (307) on both sides.

8. The bottom row and lifting type adult fish suction capture device for factory farming according to claim 6, characterized in that: The height difference between the bottom of the fish draining channel device (2) and the upper surface of the closed fish collecting box (3) is 1.5-2m.

9. The bottom row and lifting type adult fish suction capture device for factory farming according to claim 1, characterized in that: The inclined platform (302) is at an angle of 55° to the horizontal plane.

10. The bottom row and lifting type adult fish suction capture device for factory farming according to claim 4, characterized in that: The upper surface of the fish collecting box housing (301) is threadedly connected to a camera fixing bracket (306); the bladeless jet fish pump (5) comprises a jet pump guide vane (501), a booster pump water inlet pipe (502) and a bladeless jet pump chamber (503); one end of the jet pump guide vane (501) close to the closed fish collecting box (3) is fixedly connected to a slide pipe (402); one end of the slide pipe (402) is threadedly connected to a fish discharge solenoid valve (401); the jet pump guide vane (501) is away from the fish discharge solenoid valve (401) and the fish discharge solenoid valve (402) is threadedly connected to the camera fixing bracket (306); the bladeless jet fish pump (501) comprises a jet pump guide vane (501), a booster pump water inlet pipe (502) and a bladeless jet pump chamber (503); 1) is welded to a bladeless jet pump chamber (503); one end of the bladeless jet pump chamber (503) is fixedly provided with a booster pump water inlet pipe (502); one end of the booster pump water inlet pipe (502) is fixedly connected to a booster pump (403); one end of the booster pump (403) is fixedly connected to an external water supply pipe (406); one side of the bladeless jet pump chamber (503) is fixedly connected to a lifting pipe (404); and one end of the lifting pipe (404) is fixedly connected to a fish outlet housing (405).

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