A method for catching fish in a large suction range in a breeding cabin of a breeding vessel

Abstract

The invention relates to the technical field of catching equipment for aquaculture vessels, and in particular to a large-suction-range catching method for aquaculture cabins of aquaculture vessels, wherein the aquaculture cabin is provided with a first fish catching cylinder and a second fish catching cylinder, wherein the first fish catching cylinder and the second fish catching cylinder are alternately used to suck and discharge fish, and the method comprises the following steps: S1, the first fish catching cylinder sucks fish; S2, the second fish catching cylinder sucks fish; S3, the first fish catching cylinder discharges fish; S4, the first fish catching cylinder sucks fish; S5, the second fish catching cylinder discharges fish; S6, repeating steps S2-S5 until all the fish in the aquaculture cabin are caught, and the seawater pump and valve are closed; the seawater pump of the invention pumps water from the fish catching cylinder, seawater is pumped outboard by the seawater pump, and the fish catch is intercepted in the fish catching cylinder; a lifting component is used to lift the fish catch in the fish catching cylinder to a high place, and fish and water separation is achieved, and the fish catch slides to a fish discharge pipe at a high place; the entire fish catching and fish discharge process has a high degree of automation and low labor intensity, can achieve large-suction-range catching, and eliminates the step of gathering fish.

Description

Technical Field

[0001] The invention relates to the technical field of catching equipment for aquaculture vessels, and in particular to a large-suction-range catching method for aquaculture cabins of aquaculture vessels. Background Art

[0002] Deep-sea aquaculture is an emerging marine industry. The development of deep-sea aquaculture is of great significance for promoting the transformation and upgrading of fisheries, expanding the development space of the blue economy, and ensuring national food security. The main way for developed countries in the world to develop deep-sea aquaculture engineering equipment is to build large-scale aquaculture cages and floating aquaculture platforms, among which floating aquaculture platforms are represented by specialized large-scale aquaculture vessels.

[0003] For a 100,000-ton aquaculture vessel, the aquaculture water depth of each aquaculture cabin can reach 15 meters, and the number of cultured fish can reach more than 100 tons. How to effectively gather fish and efficiently and automatically catch them has become a technical problem faced by the aquaculture vessel.

[0004] The vacuum fish suction pump and centrifugal fish suction pump currently used in the fishing process are limited by their working principles and have a low suction range, generally not exceeding 7m. In addition, the prerequisite for the use of vacuum fish suction pumps and centrifugal fish suction pumps is that the fish must be gathered together in advance using nets to achieve a certain fish-water density, otherwise the fish suction efficiency is extremely low. Summary of the invention

[0005] In view of the deficiencies in the above-mentioned prior art, the present invention provides a method for catching fish in a breeding cabin of a breeding vessel with a large suction range and high catching efficiency without using nets to gather fish.

[0006] The present invention provides a method for catching fish in a large suction range in a breeding cabin of a breeding vessel, wherein the breeding cabin is provided with a first fish suction cylinder and a second fish suction cylinder, and the first fish suction cylinder and the second fish suction cylinder are alternately used to suck and discharge fish, and the method comprises the following steps:

[0007] S1. First fish suction tube sucks fish:

[0008] Connecting the first fish inlet pipe of the first fish suction cylinder with the breeding cabin, opening the first drain valve on the first drain pipe of the first fish suction cylinder, connecting the first drain pipe with the water inlet pipe of the seawater pump, starting the seawater pump, and allowing the fish-water mixture in the breeding cabin to enter the first fish suction cylinder through the first fish inlet pipe, wherein the seawater is sequentially discharged to the side of the breeding vessel through the first drain pipe and the seawater pump, and the fish catch is retained in the first fish suction cylinder;

[0009] S2, the second fish suction tube sucks fish:

[0010] When the fish catch in the first fish suction cylinder reaches a certain density, the second fish inlet pipe of the second fish suction cylinder is connected to the breeding cabin, and the second drain valve on the second drain pipe of the second fish suction cylinder is opened; the passage between the first fish suction cylinder and the breeding cabin is disconnected, and the first drain valve is closed at the same time, the water inlet pipe of the seawater pump is connected to the second drain pipe, the first fish suction cylinder stops sucking fish, and the fish-water mixture in the breeding cabin enters the second fish suction cylinder through the second fish inlet pipe, wherein the seawater is discharged to the side of the breeding ship through the second drain pipe and the seawater pump in sequence, and the fish catch is retained in the second fish inlet pipe;

[0011] S3, the first fish suction tube discharges fish:

[0012] Opening a first fish discharge valve above the first fish suction cylinder, starting a first lifting assembly in the first fish suction cylinder, allowing the fish to pass through a first fish discharge port in the first fish suction cylinder into a first fish discharge pipe and into a fish storage box. After the fish discharge is completed, the first lifting assembly is reset;

[0013] S4. First fish suction tube sucks fish:

[0014] When the fish catch in the second fish suction cylinder reaches a certain density, the first fish inlet pipe of the first fish suction cylinder is connected to the breeding cabin, and the first drain valve on the first drain pipe is opened; the passage between the second fish suction cylinder and the breeding cabin is disconnected, and the second drain valve is closed at the same time, the water inlet pipe of the seawater pump is connected to the first drain pipe, the second fish suction cylinder stops sucking fish, and the first fish suction cylinder sucks fish;

[0015] S5, the second fish suction tube discharges fish

[0016] Open the second fish discharge valve above the second fish suction cylinder, start the second lifting assembly in the second fish suction cylinder, and the fish catch enters the second fish discharge pipe through the second fish discharge port in the second fish suction cylinder and enters the fish storage box. After the fish discharge is completed, the second lifting assembly is reset;

[0017] S6. Repeat steps S2-S5 until all the fish in the culture cabin are caught, turn off the seawater pump, and close the valve.

[0018] The large suction range catching method in the aquaculture cabin of the aquaculture vessel of the present technical solution omits the fish gathering step, adopts two fish suction cylinders, and alternately sucks and discharges fish, thereby realizing continuous fish suction from the aquaculture cabin and improving work efficiency.

[0019] In some embodiments of the present application, the first lifting assembly and the second lifting assembly have the same structure. Taking the first lifting assembly as an example, its structure includes:

[0020] a first fish supporting plate, arranged inside the first fish suction cylinder, for lifting the fish caught in the first fish suction cylinder, wherein the fish supporting plate is provided with a plurality of water leakage holes to separate fish from water during the lifting process;

[0021] A first lifting rope is fixed around the first fish supporting plate to stably move the first fish supporting plate without causing unbalanced weight and overturning;

[0022] A first motor is a forward and reverse motor, which is arranged at the top of the first fish suction tube, and the output shaft of the first motor is connected to the first lifting rope;

[0023] When the first motor rotates forward, the first lifting rope is retracted, and the first lifting rope drives the first fish supporting plate to move upward; when the first motor rotates reversely, the first lifting rope is lowered, and the first lifting rope descends with the first fish supporting plate.

[0024] In some embodiments of the present application, in step S3, the first fish suction tube discharges fish, including the following steps:

[0025] S31, opening the first fish row valve above the first fish suction cylinder, the motor rotates forward, the lifting rope is wound up, and the first fish supporting plate is driven to move upward from the bottom, the first fish supporting plate lifts the fish in the first fish suction cylinder upward, and when the fish reaches the first fish row port of the first fish suction cylinder, the fish enters the fish storage box through the first fish row pipe;

[0026] S32, when all the fish caught on the first fish supporting plate enter the first fish discharging tube, the fish discharging is completed, the first fish discharging valve is closed, the motor is reversed, the first fish supporting plate moves downward until it reaches the bottom of the first fish suction tube, and the motor is turned off;

[0027] Step S5, the second fish suction tube fish discharge step is the same as the first fish suction tube fish discharge step.

[0028] In some embodiments of the present application, a first drain pipe is provided at the bottom of the first fish suction tube, a first drain valve is provided on the first drain pipe, a second drain pipe is provided at the bottom of the second fish suction tube, a second drain valve is provided on the second drain pipe, and both the first drain pipe and the second drain pipe are connected to the water inlet pipe of the drain pump;

[0029] In step S6, after closing the seawater pump and the valve, the first drain valve and the second drain valve are opened, the drain pump is started, and all the seawater in the first fish suction cylinder and the second fish suction cylinder is discharged to the side of the aquaculture vessel, and the drain pump, the first drain valve and the second drain valve are closed.

[0030] In some embodiments of the present application, fish blocking nets are provided on the first drainage pipe of the first fish suction tube and the second drainage pipe of the second fish suction tube to prevent the catch in the first fish suction tube and the second fish suction tube from entering the seawater pump from the first drainage port and the second drainage port.

[0031] In some embodiments of the present application, the height of the fish inlet on the first fish suction cylinder is 100-300 mm lower than the first drainage outlet, and the height of the fish inlet on the second fish suction cylinder is 100-300 mm lower than the second drainage outlet, so that after the fish enter the fish suction cylinder, they are not disturbed by the violently disturbed water flow at the drainage outlet, and swim quickly to the bottom of the fish suction cylinder, avoiding collision and friction between fish caused by violently disturbed water flow and injury.

[0032] In some embodiments of the present application, the first fish inlet of the first fish suction cylinder and the second fish inlet of the second fish suction cylinder are both lower than the fish outlet at the bottom of the breeding cabin, so that all the fish-water mixture in the breeding cabin can enter the first fish suction cylinder or the second fish suction cylinder.

[0033] In some embodiments of the present application, the motor is arranged at the top of the first fish suction cylinder and the second fish suction cylinder, which can avoid a complex sealing structure, and the installation height of the motor is higher than the highest liquid level of the seawater in the breeding cabin, thereby preventing the seawater in the breeding cabin from entering the first fish suction cylinder and the second fish suction cylinder due to the principle of the communicating vessel, flooding the motor and causing damage to the motor.

[0034] In some embodiments of the present application, at least two observation holes are respectively provided on the first fish suction tube and the second fish suction tube, and the observation hole of the first fish suction tube is located between the bottom of the first fish suction tube and the first drainage outlet, and the observation hole of the second fish suction tube is located between the bottom of the second fish suction tube and the second drainage outlet, so as to facilitate the observation of the distribution and density of the catch in the first fish suction tube and the second fish suction tube.

[0035] In some embodiments of the present application, the seawater pump and the drain pump are both centrifugal pumps.

[0036] Based on the above technical scheme, in the large suction range catching method of the aquaculture cabin of the aquaculture vessel of the present invention, the seawater pump draws water from the fish suction cylinder, the fish and water mixture enters the fish suction cylinder together, the seawater is pumped outboard by the seawater pump, and the catch is intercepted in the fish suction cylinder; when the catch in the fish suction cylinder reaches a certain amount, the lifting component is used to lift the catch in the fish suction cylinder to a high place, and the fish and water are separated, and the catch at a high place slides to the fish discharge pipe, thereby completing a catching operation. In order to improve the catching efficiency, multiple fish suction cylinders can be used to alternately perform suction and discharge operations;

[0037] The entire process of sucking and discharging fish is highly automated with low labor intensity, and can achieve large suction range and fish collection, eliminating the step of gathering fish. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0039] Figure 1 It is a schematic diagram of the structure of the capture system in an embodiment of the present invention.

[0040] In the figure,

[0041] 10. Breeding cabin; 11. Bilge valve; 12. Fish outlet pipe; 20. Seawater pump; 21. Water inlet pipe; 22. Water outlet pipe; 30. First fish suction tube; 31. First motor; 32. First row of fish pipes; 321. First row of fish valves; 322. First row of fish ports; 33. First lifting rope; 34. First drain pipe; 341. First drain valve; 342. First drain port; 35. First fish intercepting net; 36. First fish inlet pipe; 361. First fish inlet valve; 362. First fish inlet; 37. First observation hole; 38. First fish tray; 39. First emptying pipe; 391. First Drain valve; 40. Second fish suction tube; 41. Second motor; 42. Second row of fish tubes; 422. Second row of fish ports; 421. Second row of fish valves; 43. Second lifting rope; 44. Second drain pipe; 441. Second drain valve; 442. Second drain port; 45. Second fish intercepting net; 46. Second fish inlet pipe; 461. Second fish inlet valve; 462. Second fish inlet port; 47. Second observation hole; 48. Second fish supporting tray; 49. Second drain pipe; 491. Second drain valve; 50. Fish storage box; 60. Drain pump; 61. Drain pump water inlet pipe; 62. Drain pump water outlet pipe. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] A method for catching fish in a large suction range in a breeding cabin of a breeding vessel in this embodiment is suitable for Figure 1 The catching system shown comprises:

[0047] The fish suction cylinder assembly includes at least one fish suction cylinder, which is connected to the bottom of the culture chamber 10 through a fish inlet pipe; in this embodiment, there are two fish suction cylinders, namely a first fish suction cylinder 30 and a second fish suction cylinder 40;

[0048] A lifting component is provided inside the first fish suction cylinder 30 and the second fish suction cylinder 40, and is used to lift the fish caught in the first fish suction cylinder 30 and the second fish suction cylinder 40 to the fish discharge port of the fish suction cylinder;

[0049] The seawater pump 20 is connected to the drainage port of the first fish suction cylinder 30 and the drainage port of the second fish suction cylinder 40 to extract the fish-water mixture in the aquaculture tank into the corresponding fish suction cylinder. When the fish-water mixture in the fish suction cylinder exceeds the drainage port of the fish suction cylinder, the seawater exceeding the drainage port is discharged to the side of the aquaculture vessel through the seawater pump 20;

[0050] The fish storage box 50 is connected to the fish discharge port of the first fish suction cylinder 30 and the fish discharge port of the second fish suction cylinder 40, and is used to store the fish caught discharged from the two fish suction cylinders;

[0051] The drain pump 60 is connected to the bottom of the first fish suction cylinder 30 and the second fish suction cylinder 40. After draining the fish, the drain pump 60 drains all the remaining seawater in the first fish suction cylinder 30 and the second fish suction cylinder 40.

[0052] In this technical solution, each fish suction cylinder in the fish suction cylinder assembly is connected to the breeding cabin, the seawater pump 20 pumps water from the fish suction cylinder, the fish and water mixture enters the fish suction cylinder together, the seawater is pumped outboard by the seawater pump 20, and the fish catch is intercepted in the fish suction cylinder; when the fish catch in the fish suction cylinder reaches a certain amount, the lifting assembly is used to lift the fish catch in the fish suction cylinder to the fish discharge port at a high place, and the fish and water are separated during the lifting process, and the fish catch at a high place slides to the fish discharge pipe, thereby completing a catching operation. In order to improve the catching efficiency, this embodiment uses two fish suction cylinders to alternately perform fish absorbing and fish discharge operations.

[0053] A lifting assembly is provided in the fish suction cylinder. In this embodiment, a first lifting assembly is provided in the first fish suction cylinder 30, and a second lifting assembly is provided in the second fish suction cylinder 40. The first lifting assembly and the second lifting assembly have the same structure. Taking the first lifting assembly as an example, its structure includes:

[0054] The first fish supporting plate 38 is arranged inside the first fish sucking cylinder 30 and is used to lift the fish caught in the first fish sucking cylinder 30. The shape and area of ​​the first fish supporting plate 38 match the bottom surface of the first fish sucking cylinder 30. The first fish supporting plate 38 can move up and down along the axis of the first fish sucking cylinder 30. The first fish supporting plate 38 is provided with a plurality of water leakage holes to achieve fish and water separation during the lifting process and ensure that the fish caught will not pass through the water leakage holes.

[0055] A first lifting rope 33, one end of which is fixed around the first fish supporting plate 38, drives the first fish supporting plate 38 to be lifted stably without overturning due to unbalanced weight;

[0056] The first motor 31 is a forward and reverse motor, and is disposed at the top of the first fish suction tube 30. The output shaft of the first motor 31 is connected to the other end of the first lifting rope 33.

[0057] When the first motor 31 rotates forward, the first lifting rope 33 is retracted, and the first lifting rope 33 drives the first fish supporting plate 38 to move upward; when the first motor 31 rotates reversely, the first lifting rope 33 is lowered and resets as the first fish supporting plate 38 descends.

[0058] like Figure 1 As shown, a first drain pipe 39 is provided at the bottom of the first fish suction cylinder 30, and a first drain valve 391 is provided on the first drain pipe 39; a second drain pipe 49 is provided at the bottom of the second fish suction cylinder 40, and a second drain valve 491 is provided on the second drain pipe 49; the first drain pipe 39 and the second drain pipe 49 are respectively connected to the drain pump inlet pipe 61, and the drain pump 60 is started to drain all the residual seawater in the first fish suction cylinder 30 and the second fish suction cylinder 40.

[0059] A first fish intercepting net 35 is provided at the water inlet end of the first drainage pipe 34 of the first fish suction cylinder 30, and a second fish intercepting net 45 is provided at the water inlet end of the second drainage pipe 44 of the second fish suction cylinder 40 to prevent the fish caught in the first fish suction cylinder 30 and the second fish suction cylinder 40 from entering the seawater pump 20 from the first drainage port 342 and the second drainage port 442.

[0060] The first fish inlet 362 of the first fish suction cylinder 30 is 100-300 mm lower than the first drainage outlet 342, and the second fish inlet 462 of the second fish suction cylinder 40 is 100-300 mm lower than the second drainage outlet 442. The first fish inlet 362 of the first fish suction cylinder 30 and the second fish inlet 462 of the second fish suction cylinder 40 are both lower than the fish outlet at the bottom of the breeding cabin 10.

[0061] Continue to see Figure 1 The first motor 31 is arranged at the top of the first fish suction cylinder 30, and the second motor 41 is arranged at the top of the second fish suction cylinder 40, which can avoid the fish suction cylinder from being provided with a complex sealing structure, and the installation height of the motor is higher than the highest liquid level of the seawater in the breeding cabin 10, which prevents the seawater in the breeding cabin 10 from entering the first fish suction cylinder 30 and the second fish suction cylinder 40 due to the principle of the communicating vessel, flooding the motor and causing damage to the motor.

[0062] The first fish suction tube 30 is provided with a first observation hole 37, and the second fish suction tube 40 is provided with a second observation hole 47, and the number of the first observation hole 37 and the second observation hole 47 is not less than 2. The first observation hole 37 of the first fish suction tube 30 is located between the bottom of the first fish suction tube 30 and the first drainage port 342, and the second observation hole 47 of the second fish suction tube 40 is located between the bottom of the second fish suction tube 40 and the second drainage port 442, so as to facilitate the observation of the distribution and density of the catch in the first fish suction tube 30 and the second fish suction tube 40.

[0063] The first drain port 342 of the first fish suction cylinder 30 is connected to the first drain pipe 34, and the first drain pipe 34 is provided with a first drain valve 341. The second drain port 442 of the second fish suction cylinder 40 is connected to the second drain pipe 44, and the second drain pipe 44 is provided with a second drain valve 441. The first drain valve 341 and the second drain valve 441 are automatic valves. A fish outlet pipe 12 is provided at the bottom of the breeding cabin 10, and the fish outlet pipe 12 is connected to the first fish inlet 362 of the first fish suction cylinder 30 through the first fish inlet pipe 36, and the fish outlet pipe 12 is connected to the second fish inlet 462 of the second fish suction cylinder 40 through the second fish inlet pipe 46. The fish outlet pipe 12 is connected, a bilge valve 11 is arranged on the first fish inlet pipe 36, a first fish inlet valve 361 is arranged on the first fish inlet pipe 36, a second fish inlet valve 461 is arranged on the second fish inlet pipe 46, the first row of fish ports 322 of the first fish suction cylinder 30 are connected to the first row of fish pipes 32, the second row of fish ports 422 of the second fish suction cylinder 40 are connected to the second row of fish pipes 42, the first row of fish pipes 32 are provided with a first row of fish valves 321, the second row of fish valves 421 are arranged on the second row of fish pipes 42, and the bilge valve 11, the first fish inlet valve 361, the second fish inlet valve 461, the first row of fish valves 321 and the second row of fish valves 421 all adopt automatic knife gate valves.

[0064] The seawater pump 20 and the drain pump 60 are both centrifugal pumps. A 45° elbow or a 90° elbow with a bending radius at least 5 times the inner diameter of the fish outlet pipe 12 should be selected at the direction change position of the fish outlet pipe 12 in the culture tank.

[0065] When the above large suction range capture system is used for capture, the following steps are included:

[0066] S1. First fish suction tube sucks fish:

[0067] Open the bilge valve 11, the first fish inlet valve 361, and the first drain valve 341, so that the first fish inlet pipe 36 of the first fish suction cylinder 30 is connected to the bottom of the culture chamber 10, open the first drain valve 341 on the first drain pipe 34 of the first fish suction cylinder 30, so that the first drain pipe 34 is connected to the water inlet pipe 21 of the seawater pump 20, start the seawater pump 20, and the fish-water mixture in the culture chamber 10 enters the first fish suction cylinder 30 through the fish outlet pipe 12 and the first fish inlet pipe 36, wherein, when the fish-water mixture exceeds the first drain port 342, the seawater is discharged to the side of the culture vessel through the first drain pipe 34, the water inlet pipe 21, the seawater pump 20, and the water outlet pipe 22 in sequence, and the fish catch is retained in the first fish suction cylinder 30;

[0068] S2, the second fish suction tube sucks fish:

[0069] The distribution and density of the fish in the first fish suction cylinder 30 are observed through the first observation hole 37 on the first fish suction cylinder 30. When the fish in the first fish suction cylinder 30 reaches a certain density, the second fish inlet valve 461 is opened, the second fish inlet pipe 46 of the second fish suction cylinder 40 is connected to the culture cabin 10, and the second drain valve 441 is opened; the first fish inlet valve 361 and the first drain valve 341 are closed, the passage between the first fish suction cylinder 30 and the culture cabin 10 is disconnected, the water inlet pipe 21 of the seawater pump 20 is connected to the second drain pipe 44, the first fish suction cylinder 30 stops sucking fish, and the fish-water mixture in the culture cabin 10 enters the second fish suction cylinder 40 through the second fish inlet pipe 46, wherein, when the fish-water mixture exceeds the second drain port 442, the seawater is discharged to the side of the culture vessel through the second drain pipe 44, the water inlet pipe 21, the seawater pump 20, and the water outlet pipe 22 in sequence, and the fish is trapped in the second fish suction cylinder 40;

[0070] S3, the first fish suction tube discharges fish:

[0071] The first fish discharge valve 321 above the first fish suction cylinder 30 is opened, and the first lifting assembly in the first fish suction cylinder 30 is started, and the fish catch enters the first fish discharge pipe 32 through the first fish discharge port 322 in the first fish suction cylinder 30 and enters the fish storage box 50. After the fish discharge is completed, the first lifting assembly is reset;

[0072] Specifically, the steps include:

[0073] S31, opening the first fish discharge valve 321 above the first fish suction cylinder 30, the first motor 31 rotates forward, the first lifting rope 33 is wound up, and the first fish supporting plate 38 is driven to move upward from the bottom of the first fish suction cylinder 30, and the first fish supporting plate 38 lifts the fish in the first fish suction cylinder 30 upward. When the height of the first fish supporting plate 38 is higher than the liquid level in the first fish suction cylinder 30, the fish and water are separated, and when the fish reaches the first fish row port 322 of the first fish suction cylinder 30, the fish enters the fish storage box 50 through the first fish row pipe 32;

[0074] S32, when all the fish caught on the first fish supporting plate 38 enter the first fish discharge tube 32, the fish discharge is completed, the first fish discharge valve 321 is closed, the first motor 31 is controlled to reverse, the first fish supporting plate 38 moves downward until it returns to the bottom of the first fish suction tube 30, and the first motor 31 is turned off.

[0075] S4. First fish suction tube sucks fish:

[0076] The distribution and density of the fish caught in the second fish suction cylinder 40 are observed through the second observation hole 47 on the second fish suction cylinder 40. When the fish caught in the second fish suction cylinder 40 reaches a certain density, the first fish inlet valve 361 is opened to connect the first fish inlet pipe 36 of the first fish suction cylinder 30 with the culture chamber 10, the first drain valve 341 on the first drain pipe 34 is opened, and the water inlet pipe 21 of the seawater pump 20 is connected with the first drain pipe 34; the second fish inlet valve 461 of the second fish suction cylinder 40 is closed, and the second drain valve 441 is closed at the same time, the second fish suction cylinder 40 stops sucking fish, and the first fish suction cylinder 30 sucks fish again;

[0077] S5, the second fish suction tube discharges fish

[0078] The second fish discharge valve 421 above the second fish suction cylinder 40 is opened, and the second lifting assembly in the second fish suction cylinder 40 is started, and the fish catch enters the second fish discharge pipe 42 through the second fish discharge port 422 in the second fish suction cylinder 40 and enters the fish storage box 50. After the fish discharge is completed, the second lifting assembly is reset;

[0079] Specifically, the steps include:

[0080] S31, open the second fish row valve 421 above the second fish suction cylinder 40, control the second motor 41 to rotate forward, and the second lifting rope 43 is wound up, driving the second fish supporting plate 48 to move upward from the bottom of the second fish suction cylinder 40, and the second fish supporting plate 48 lifts the fish in the second fish suction cylinder 40 upward. When the height of the second fish supporting plate 48 is higher than the liquid level in the second fish suction cylinder 40, the fish and water are separated, and when the fish reaches the second fish row port 422 of the second fish suction cylinder 40, the fish enters the fish storage box 50 through the second fish row pipe 42;

[0081] S32, when all the fish caught on the second fish supporting plate 48 enter the second fish row tube 42, the second fish suction tube 40 has finished discharging fish, the second fish discharging valve 421 is closed, the second motor 41 is controlled to reverse, the second fish supporting plate 48 moves downward, until it is reset to the bottom of the second fish suction tube 40, and the second motor 41 is turned off;

[0082] S6, repeat steps S2-S5 until all the fish in the culture hold are caught, turn off the seawater pump 20, and close all the open valves. Open the first drain valve 391 and the second drain valve 491, start the drain pump 60, drain all the seawater in the first fish suction cylinder 30 and the second fish suction cylinder 40 to the side of the culture vessel, and turn off the drain pump 60, the first drain valve 391, and the second drain valve 491.

[0083] Based on the above technical scheme, the large suction range catching method of the aquaculture cabin of the aquaculture vessel of the present invention is that the seawater pump draws water from the fish suction cylinder, the fish and water mixture enters the fish suction cylinder together, the seawater is pumped outboard by the seawater pump, and the catch is intercepted in the fish suction cylinder; after the catch in the fish suction cylinder reaches a certain amount, the lifting component is used to lift the catch in the fish suction cylinder to a high place, and the fish and water are separated, and the catch at a high place slides to the fish discharge pipe, thereby completing a catching operation. In order to improve the catching efficiency, multiple fish suction cylinders can be used to alternately perform the suction and discharge operations; the entire fish suction and discharge process has a high degree of automation and low labor intensity, and can achieve large suction range catching, eliminating the fish gathering step.

[0084] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0085] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A method for catching fish in a large suction range in a breeding cabin of a breeding vessel, characterized in that: The culture cabin is equipped with a first fish suction cylinder and a second fish suction cylinder, and the first fish suction cylinder and the second fish suction cylinder are alternately used to suck and discharge fish, including the following steps: S1. First fish suction tube sucks fish: Connecting the first fish inlet pipe of the first fish suction cylinder with the breeding cabin, opening the first drain valve on the first drain pipe of the first fish suction cylinder, connecting the first drain pipe with the water inlet pipe of the seawater pump, starting the seawater pump, and allowing the fish-water mixture in the breeding cabin to enter the first fish suction cylinder through the first fish inlet pipe, wherein the seawater is sequentially discharged to the side of the breeding vessel through the first drain pipe and the seawater pump, and the fish catch is retained in the first fish suction cylinder; S2, the second fish suction tube sucks fish: When the fish catch in the first fish suction cylinder reaches a certain density, the second fish inlet pipe of the second fish suction cylinder is connected to the breeding cabin, and the second drain valve on the second drain pipe of the second fish suction cylinder is opened; the passage between the first fish suction cylinder and the breeding cabin is disconnected, and the first drain valve is closed at the same time, the water inlet pipe of the seawater pump is connected to the second drain pipe, the first fish suction cylinder stops sucking fish, and the fish-water mixture in the breeding cabin enters the second fish suction cylinder through the second fish inlet pipe, wherein the seawater is discharged to the side of the breeding ship through the second drain pipe and the seawater pump in sequence, and the fish catch is retained in the second fish inlet pipe; S3, the first fish suction tube discharges fish: Opening a first fish discharge valve above the first fish suction cylinder, starting a first lifting assembly in the first fish suction cylinder, allowing the fish to pass through a first fish discharge port in the first fish suction cylinder into a first fish discharge pipe and into a fish storage box. After the fish discharge is completed, the first lifting assembly is reset; S4. First fish suction tube sucks fish: When the fish catch in the second fish suction cylinder reaches a certain density, the first fish inlet pipe of the first fish suction cylinder is connected to the breeding cabin, and the first drain valve on the first drain pipe is opened; the passage between the second fish suction cylinder and the breeding cabin is disconnected, and the second drain valve is closed at the same time, the water inlet pipe of the seawater pump is connected to the first drain pipe, the second fish suction cylinder stops sucking fish, and the first fish suction cylinder sucks fish; S5, the second fish suction tube discharges fish: Open the second fish discharge valve above the second fish suction cylinder, start the second lifting assembly in the second fish suction cylinder, and the fish catch enters the second fish discharge pipe through the second fish discharge port in the second fish suction cylinder and enters the fish storage box. After the fish discharge is completed, the second lifting assembly is reset; S6, repeating steps S2-S5 until all the fish in the culture cabin are caught, turning off the seawater pump and closing the valve; The first lifting assembly and the second lifting assembly have the same structure, and the first lifting assembly structure includes: a first fish supporting plate, arranged inside the first fish suction cylinder, for lifting the fish caught in the first fish suction cylinder, wherein the fish supporting plate is provided with a plurality of water leakage holes to separate fish from water during the lifting process; A first lifting rope is fixed around the first fish supporting plate to stably move the first fish supporting plate without causing unbalanced weight and overturning; A first motor is a forward and reverse motor, which is arranged at the top of the first fish suction tube, and the output shaft of the first motor is connected to the first lifting rope; When the first motor rotates forward, the first lifting rope is retracted, and the first lifting rope drives the first fish supporting plate to move upward; when the first motor rotates reversely, the first lifting rope is lowered, and the first lifting rope descends along with the first fish supporting plate; In step S3, when the first fish suction tube discharges fish, the following steps are included: S31, opening the first fish row valve above the first fish suction cylinder, the motor rotates forward, the lifting rope is wound up, and the first fish supporting plate is driven to move upward from the bottom, the first fish supporting plate lifts the fish in the first fish suction cylinder upward, and when the fish reaches the first fish row port of the first fish suction cylinder, the fish enters the fish storage box through the first fish row pipe; S32, when all the fish caught on the first fish supporting plate enter the first fish discharging tube, the fish discharging is completed, the first fish discharging valve is closed, the motor is reversed, the first fish supporting plate moves downward until it reaches the bottom of the first fish suction tube, and the motor is turned off; Step S5, the second fish suction tube fish discharge step is the same as the first fish suction tube fish discharge step.

2. The large suction range catching method of aquaculture cabin of aquaculture vessel according to claim 1, characterized in that: A first drain pipe is provided at the bottom of the first fish suction tube, a first drain valve is provided on the first drain pipe, a second drain pipe is provided at the bottom of the second fish suction tube, a second drain valve is provided on the second drain pipe, and both the first drain pipe and the second drain pipe are connected to the water inlet pipe of the drain pump; In step S6, after closing the seawater pump and the valve, the first drain valve and the second drain valve are opened, the drain pump is started, and all the seawater in the first fish suction cylinder and the second fish suction cylinder is discharged to the side of the aquaculture vessel, and the drain pump, the first drain valve and the second drain valve are closed.

3. The large suction range catching method of aquaculture cabin of aquaculture vessel according to claim 2, characterized in that: The first drainage pipe of the first fish suction tube and the second drainage pipe of the second fish suction tube are both provided with fish blocking nets.

4. The large suction range catching method of aquaculture cabin of aquaculture vessel according to claim 1, characterized in that: The height of the fish inlet on the first fish suction cylinder is 100-300mm lower than the first drainage outlet of the first fish suction cylinder, and the height of the fish inlet on the second fish suction cylinder is 100-300mm lower than the second drainage outlet of the second fish suction cylinder.

5. The large suction range catching method of aquaculture cabin of aquaculture vessel according to claim 1, characterized in that: The first fish inlet of the first fish suction cylinder and the second fish inlet of the second fish suction cylinder are both lower than the fish outlet at the bottom of the breeding cabin.

6. The large suction range catching method of aquaculture cabin of aquaculture vessel according to claim 1, characterized in that: The first motor is arranged at the top of the first fish suction cylinder, and the installation height of the first motor is higher than the highest liquid level of the seawater in the breeding cabin.

7. The method for catching fish in a large suction range in a breeding cabin of a breeding vessel according to claim 4, characterized in that: The first fish suction tube and the second fish suction tube are respectively provided with no less than two observation holes, and the observation hole of the first fish suction tube is located between the bottom of the first fish suction tube and the first drainage port, and the observation hole of the second fish suction tube is located between the bottom of the second fish suction tube and the second drainage port.

8. The large suction range catching method of aquaculture cabin of aquaculture vessel according to claim 2, characterized in that: The seawater pump and the drain pump are both centrifugal pumps.

Images