Fish-water separation and counting device for fish fry entering the cabin of aquaculture ship

Abstract

The present invention relates to a device for separating and counting fry entering a cabin of a breeding ship, comprising a conversion joint, a fish-water separator, a vacuum water diversion tank, a fry buffer box, and a vacuum pump; the fry buffer box is arranged on the breeding ship, the fish-water separator is a hollow cavity with four openings at the upper, lower, left and right ends, the left end is connected to the fry buffer box, the right end is connected to the conversion joint, the upper end is connected to an image processing and counting module, and the lower end is connected to the vacuum water diversion tank; the interior of the fish-water separator is provided with an inclined plane composed of a row of leaking grid pipes, the axial direction of the leaking grid pipes is the same as the guiding direction of the fish-water separator, and partitions arranged at equal intervals are provided above the leaking grid pipes, the spacing between adjacent partitions is adapted to the width of a fish, and the height of the partitions is not less than the height of a fish when standing sideways; there are multiple image processing and counting modules, and they correspond one by one to the areas between adjacent partitions; the vacuum pump is arranged in the fry buffer box to provide negative pressure to the fish-water separator.

Description

Technical Field

[0001] The invention relates to an accessory installed on a fry entry system of a large-scale aquaculture vessel, in particular to a fish-water separation and counting device for fry entry into the aquaculture vessel, belonging to the technical field of aquaculture vessels. Background Art

[0002] When the live fish transport ship docks and moored to the aquaculture ship, it is necessary to connect the breeding cabin on the live fish transport ship with the fry entry system of the aquaculture ship with a temporary fish transfer pipe, start the fry entry system to separate the water of the fry, count the fry, and then transfer them to the breeding cabin of the aquaculture ship.

[0003] The existing system for feeding fry into the cabin uses a temporary fish pipe, and the fish and water are generally not truly separated. Although the fish pipe has a counting device, the counting is not accurate enough, which is not conducive to the precision farming of the aquaculture vessel. Summary of the Invention

[0004] The present invention aims to provide a fish-water separation and counting device specially used for fish fry entering the cabin of aquaculture vessels. The device can accurately complete the counting of fish fry entering the cabin without reducing the efficiency of fish fry entering the cabin, and can also prevent the fish fry from being injured when entering the cabin.

[0005] The present invention adopts the following technical solutions:

[0006] A device for separating and counting fry entering the cabin of a breeding ship, comprising a conversion joint 3, a fish-water separator 4, a vacuum water diversion tank 2, a fry buffer box 1, and a vacuum pump; the fry buffer box 1 is arranged on the breeding ship, the fish-water separator 4 is a hollow cavity with four openings at the top, bottom, left and right ends, the left end is connected to the fry buffer box 1, the right end is connected to the conversion joint 3, the upper end is connected to the image processing and counting module 7, and the lower end is connected to the vacuum water diversion tank 2; the interior of the fish-water separator 4 is provided with an inclined plane composed of a row of leaking grid tubes 9, the axial direction of the leaking grid tubes 9 is the same as the guiding direction of the fish-water separator 4, and partitions 8 arranged at equal intervals are provided above the leaking grid tubes 9, the spacing between adjacent partitions 8 is adapted to the width of a fish, and the height of the partition 8 is not less than the height of a fish when standing sideways; there are multiple image processing and counting modules 7, and they correspond one by one to the areas between adjacent partitions 8; the vacuum pump is arranged in the fry buffer box 1 to provide negative pressure to the fish-water separator 4.

[0007] Preferably, the partition 8 is made of stainless steel plate, the slide partition at the front end of the partition is a quarter of an ellipse, and the cross-section of the rear end is a semi-ellipse; the leaking grid pipe 9 is made of seamless finely polished pipes evenly distributed with a certain gap between each other. When the fish and water are separated, the water leaks from the gaps between the pipes, between the pipes and the partition 8, and between the pipes and the side walls of the fish-water separator to the vacuum water tank 2, and the fry slides along the slide formed by adjacent leaking grid pipes 9 to the fry cache box 1.

[0008] Preferably, the partition 8 does not contact the leaking grid pipe 9 and has a vertical gap to ensure that the suction channel of the vacuum water tank 2 is always unobstructed; the supporting profile 10 is arranged in the middle position between the partition 8 and the leaking grid pipe 9 to prevent the leaking grid pipe 9 and the partition 8 from being deformed by the fish water pressure.

[0009] Preferably, the vacuum water tank 2 is connected to a centrifugal pump, and its liquid level is adjusted by the system to maintain continuous pumping of the system.

[0010] Preferably, the conversion joint 3 is converted from a DN300mm diameter pipe to a rectangular cross-section with the same width as the fish-water separator, so that the fish-water mixture is evenly distributed when flowing through the conversion joint and then slides into the fish-water separator.

[0011] Preferably, the fish-water separator 4 is equipped with a liquid level switch interface 5, a pressure sensor interface 6, an image processing and counting module 7, an image processing and counting module installation interface 11, and a supporting profile 10. This function is used to separate fish from water and count fry as they enter the tank. The liquid level switch interface 5 is equipped with a tuning fork-type liquid level switch. When the liquid level in the vacuum water tank 2 rises to the height of the liquid level switch interface 5, the centrifugal pump of the system's vacuum water tank 2 is turned on and the vacuum pump is turned off. The system continuously separates the fish from water and transfers them to the fry buffer box 1 in a constant low vacuum environment. The fish-water separator 4 is equipped with a pressure sensor interface 6 for connecting to a pressure sensor. The pressure sensor detects the vacuum pressure in the fish-water separator and then feeds it back to the system, thereby adjusting the power of the vacuum pump.

[0012] Preferably, the water outlet 13 below the fish-water separator is connected to the vacuum water tank 2. After the fish-water is separated, the water falls into the vacuum water tank 2 and is then pumped overboard by a centrifugal pump.

[0013] Preferably, the fish water inlet 14 at the left end of the fish water separator is first connected to a pneumatic knife gate valve and then connected to the breeding cabin of the live fish transport ship.

[0014] Preferably, the interior and flange interfaces of the conversion joint 3 and the fish-water separator 4 are made of non-toxic and odorless polyurea; the leakage grid pipe 9 and the partition 8 are made of 316L stainless steel.

[0015] Preferably, the conversion joint 3 and the bottom surface of the fish-water separator 4 are on the same plane, and the plane has a downward slope toward the fry buffer box.

[0016] The beneficial effects of the present invention are:

[0017] 1) It can accurately count the fry entering the cabin without reducing the efficiency of fry entering the cabin, making the fry entering the cabin process smooth and orderly;

[0018] 2) The vacuum water tank and vacuum pump are used together to quickly remove water when counting fry, so as to facilitate accurate counting by the image processing counting module;

[0019] 3) The vacuum water tank and vacuum pump are used together to ensure that the fry enter the cabin at a certain speed;

[0020] 4) While maintaining a high speed of fry entry, the structural design of the baffles and leaky grille pipes on the fish-water separator improves the stability of fry entry into the cabin and avoids injury to the fry during the entry process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the fish-water separation and counting device for fish fry entering the cabin of a breeding ship according to the present invention.

[0022] Figure 2 These are three views of the fish-water separator, including (a) the main view, (b) the left view, and (c) the top view.

[0023] Figure 3 This is a detailed drawing of the liquid level switch mounting base.

[0024] Figure 4 Schematic diagram of the cross section of the fish-water separator and image processing and counting module. (a) Figure 2 AA section view in, (b) is Figure 2 BB cross-sectional view in, (c) is Figure 2 CC section view in.

[0025] Figure 5 The following are three views of the slideway partition. (a) is the front view, (b) is the left view, and (c) is the top view.

[0026] In the figure, 1. Fry cache box, 2. Vacuum water tank, 3. Adapter, 4. Fish-water separator, 5. Liquid level switch interface, 6. Pressure sensor interface, 7. Image processing and counting module, 8. Partition, 9. Leakage grille pipe, 10. Support profile, 11. Image processing and counting module installation interface, 12. Fish-water separator outlet, 13. Drain, 14. Fish-water inlet. DETAILED DESCRIPTION

[0027] The present invention is further described below with reference to specific examples.

[0028] First, see the attached Figure 1-5 , each component and its specific function in this embodiment are described below:

[0029] Fry cache box 1:

[0030] A large-capacity fry buffer tank 1 with an effective dissolving capacity of 11m³ is made of CCS235 or AH36 marine steel plate, and the buffer tank is treated with polyurea anti-corrosion.

[0031] Vacuum water tank 2:

[0032] The vacuum water tank 2 receives the water separated from the fish-water mixture by the fish-water separator, is directly connected to the centrifugal pump, and adjusts the liquid level height through the system to maintain continuous pumping of the system.

[0033] Adapter 3:

[0034] One front end is first connected to a pneumatic knife gate valve, then to a temporary hose on a live fish transport vessel, and the other end is connected to a box-type fish-water separator. This conversion joint converts a DN300mm diameter pipe into a rectangular outlet cross-section (the same width as the fish-water separator) and evenly distributes the fish-water mixture, so that the number of fry entering each slide in the fish-water separator is roughly the same, allowing for more accurate counting.

[0035] Fish water separator 4:

[0036] The box-type fish-water separator 4 is equipped with a liquid level switch interface 5, a pressure sensor interface 6, an image processing and counting module 7, an image processing and counting module installation interface 11, a partition 8, a leaking grid pipe 9, and a supporting profile 10. It has the functions of separating fish and water and counting fry when they enter the tank.

[0037] Liquid level switch interface 5:

[0038] A tuning fork type liquid level switch is installed at the liquid level switch interface 5. When the liquid level in the vacuum water diversion tank 2 rises to the height of the liquid level switch interface 5, the centrifugal pump of the system is turned on and the vacuum pump is turned off. The system continuously separates the fry from the water and transfers them to the fry buffer box in a constant low vacuum environment.

[0039] Pressure sensor interface 6:

[0040] The pressure sensor interface 6 is connected to a pressure sensor to detect the vacuum pressure in the fish-water separator and then feed it back to the system.

[0041] Image processing counting module 7:

[0042] The leaking grid tubes 9 of the image processing and counting modules 7 are installed in parallel above the rear half of the fish-water separator chutes. Using intelligent image processing, they record the number of fry passing through each corresponding chute. This count is used to calculate the number of fry transported to the aquaculture chamber. In the rear half of the fish-water separator chutes, the fry continue to slide toward the chute's exit. During this sliding process, an image processing and counting module 7 above each chute measures the number of fry passing through that chute. The system then accumulates the counts for all chutes to determine the total number of fry delivered to the aquaculture chamber.

[0043] Partition 8:

[0044] The partition 8 is made of 316L stainless steel plate. In order to prevent the fry from being damaged, the 316L stainless steel plate is placed on the outer surface. The front end of the partition (where the fish water enters the slide) is a quarter of an elliptical sphere, and the cross section of the rear end is a semi-elliptical. Figure 5 shown.

[0045] Leaking grille pipe 9:

[0046] The leaking grate tubes 9 are made of seamless, finely polished 316L tubes, evenly spaced at regular intervals. During fish-water separation, water leaks from the gaps between the tubes, between the tubes and the partitions 8, and between the tubes and the sidewalls of the fish-water separator into the vacuum water inlet tank 2. The fry slide along the slideway formed by the leaking grate tubes and the leaking grate tubes 9 into the fry buffer box 1. The partitions 8 and leaking grate tubes 9 form the fish-water separator slideway. There are 18 leaking grate tubes 9 and 8 partitions 8, plus the two side plates of the fish-water separator that act as two partitions, forming a total of 9 equal-width slideways. The leaking grate tubes 9 and partitions 8 are evenly spaced in the slideway.

[0047] Support profile 10:

[0048] The supporting profile 10 is arranged at the middle position of the length of the partition 8 and the leakage grid pipe 9 to prevent the leakage grid pipe and the partition from being deformed by the pressure of fish water.

[0049] Image processing counting module installation interface 11:

[0050] The image processing and counting module installation interface 11 is used to install the image processing and counting module 7. The nine image processing and counting modules correspond to the nine slideways of the water separator.

[0051] Fish water separator outlet 12

[0052] The outlet of the fish-water separator 12 is connected to the fry buffer box 1, and the fry slide into the fry buffer box 1 after the fish water is separated and counted.

[0053] Fish water separator outlet 13:

[0054] The water outlet 13 of the fish-water separator is connected to the vacuum water tank 2. After the fish-water is separated, the water falls into the vacuum water tank 2 and is then pumped outboard by a centrifugal pump.

[0055] Fish and water import 14:

[0056] The fish water inlet 14 is first connected to a pneumatic knife gate valve and then connected to the culture cabin of the live fish transport ship.

[0057] See also Figure 1-4, a device for separating and counting fish and water when fry enter the cabin of a breeding ship, comprising a conversion joint 3, a fish-water separator 4, a vacuum water diversion tank 2, a fry buffer box 1, and a vacuum pump; the fry buffer box 1 is arranged on the breeding ship, the fish-water separator 4 is a hollow cavity with four openings at the upper, lower, left and right ends, the left end is connected to the fry buffer box 1, the right end is connected to the conversion joint 3, the upper end is connected to the image processing and counting module 7, and the lower end is connected to the vacuum water diversion tank 2; the interior of the fish-water separator 4 is provided with an inclined plane composed of a row of leaking grid tubes 9, the axial direction of the leaking grid tubes 9 is the same as the guiding direction of the fish-water separator 4, and partitions 8 arranged at equal intervals are provided above the leaking grid tubes 9, the spacing between adjacent partitions 8 is adapted to the width of a fish, and the height of the partition 8 is not less than the height of a fish after standing sideways; there are multiple image processing and counting modules 7, and they correspond one by one to the areas between adjacent partitions 8; the vacuum pump is arranged in the fry buffer box 1 to provide negative pressure to the fish-water separator 4.

[0058] See also Figure 5 Combined with Figure 4 The partition 8 is made of stainless steel plate, the slide partition at the front end of the partition is a quarter of an ellipse, and the cross-section of the rear end is a semi-ellipse; the leaking grid pipe 9 is made of seamless fine polished pipes and is evenly distributed with a certain gap between each other. When the fish and water are separated, the water leaks from the gaps between the pipes, between the pipes and the partition 8, and between the pipes and the side walls of the fish-water separator to the vacuum water tank 2, and the fry slides along the slide composed of adjacent leaking grid pipes 9 to the fry cache box 1.

[0059] See also Figure 4 In the BB cross-sectional view, the partition 8 does not contact the leaking grid pipe 9, and there is a vertical gap to ensure that the suction channel of the vacuum water tank 2 is always unobstructed; the supporting profile 10 is arranged in the middle position of the partition 8 and the leaking grid pipe 9 to prevent the leaking grid pipe 9 and the partition 8 from being deformed by the fish water pressure.

[0060] See also Figure 1 The vacuum water tank 2 is connected to the centrifugal pump, and its liquid level is adjusted through the system to maintain continuous pumping of the system.

[0061] See also Figure 2 The conversion joint 3 is converted from a DN300mm diameter pipe to a rectangular cross-section with the same width as the fish-water separator, so that the fish-water mixture is evenly distributed when flowing through the conversion joint and then slides into the fish-water separator.

[0062] See also Figure 4The fish-water separator 4 is equipped with a liquid level switch interface 5, a pressure sensor interface 6, an image processing and counting module 7, an image processing and counting module installation interface 11, and a supporting profile 10. It functions to separate fish and water and count fry as they enter the tank. The liquid level switch interface 5 is equipped with a tuning fork-type liquid level switch. When the liquid level in the vacuum water tank 2 rises to the height of the liquid level switch interface 5, the system's centrifugal pump in the vacuum water tank 2 is turned on and the vacuum pump is turned off. The system continuously separates the fish and water in a constant low vacuum environment and then transfers the fry to the fry buffer box 1. The fish-water separator 4 is equipped with a pressure sensor interface 6 for connecting to a pressure sensor. The pressure sensor detects the vacuum pressure in the fish-water separator and then feeds it back to the system, thereby adjusting the power of the vacuum pump.

[0063] See also Figure 1 The water outlet 13 below the fish-water separator is connected to the vacuum water tank 2. After the fish-water is separated, the water falls into the vacuum water tank 2 and is then pumped outboard by a centrifugal pump.

[0064] See also Figure 4 The fish water inlet 14 at the left end of the fish water separator is first connected to a pneumatic knife gate valve and then to the culture cabin of the live fish transport ship. The pneumatic knife gate valve, live fish transport ship and its culture cabin are not shown in the accompanying drawings.

[0065] See also Figure 2 The interior and flange interfaces of the conversion joint 3 and the fish-water separator 4 are made of non-toxic and odorless polyurea; the leakage grid pipe 9 and the partition 8 are made of 316L stainless steel.

[0066] See also Figure 1 The bottom surface of the conversion joint 3 and the fish-water separator 4 are on the same plane, and the plane has a downward slope toward the fry cache box.

[0067] The present invention provides a process for transferring fish fry from a live fish transport vessel to a breeding cabin by continuous pumping in a relatively low constant negative pressure environment, through a conversion joint 3, a fish-water separator 4, fish-water separation, and fry counting. The fish-water mixture is evenly distributed within the conversion joint before being slid into the fish-water separator, where it is separated, and the fry are counted before being transferred to the breeding cabin. Achieving the purpose of fish-water separation and counting during the fry transfer process can be achieved in three steps:

[0068] First, the fish-water mixture is evenly distributed within the adapter before sliding into the fish-water separator. Adapter 3 transforms the fry transfer channel from a DN300mm pipe to a rectangular cross-section, the same width as the fish-water separator. This evenly distributes the fish-water mixture as it flows through the adapter before sliding into the fish-water separator.

[0069] Second, the fish-water mixture slides into the fish-water separator chute for fish-water separation. Evenly distributed, the fish-water mixture slides into the fish-water separator, with almost equal amounts of fish and water distributed to each chute. In the first half of the fish-water separator chute, the vast majority of the water in the fish-water mixture is separated and flows into the vacuum water tank 2.

[0070] Third, fry counting. In the second half of the fish-water separator chute, the fry continue to slide toward the fish-water separator outlet. During this sliding process, an image processing and counting module 7 above each chute measures the number of fry passing through that chute. The system then accumulates the number of fry passing through all chutes to obtain the total number of fry delivered to the breeding chamber.

[0071] Internal polyurea: non-toxic and odorless polyurea is used inside the conversion joint 3 and the fish-water separator 4, the sealing surfaces of each flange, the pipes connecting the flange and the fish-water separator, and the liquid level switch mounting base (except for the leakage grid pipe 9 which is a seamless finely polished pipe made of 316L material and the partition 8 which is a slide partition formed of 316L material sheet). The film thickness is ≥3mm, and the polyurea has good elasticity and adhesion, which is more suitable for the working state of alternating negative and positive pressure; and the polyurea surface is smooth, soft and not easy to hurt the fish.

[0072] It should be noted that:

[0073] The conversion joint 3 converts the circular tube into a rectangular outlet cross-section, and evenly distributes the fish-water mixture before entering the fish-water separator 4, so that the number of fry sliding into each slide of the fish-water separator 4 is roughly the same; because the fish-water mixture is roughly evenly distributed to each slide, it avoids congestion and overlap of fry in any slide of the fish-water separator, thereby preventing the fry from scraping against each other and causing damage to the fry, and the fry can be counted more accurately.

[0074] The interior and flange interfaces of the conversion joint 3 and the fish-water separator 4 (except the leaking grille pipe 9 and the partition 8 which are made of 316L material) are all made of non-toxic and odorless polyurea. Polyurea has good elasticity, which just meets the working state of the cache box during the positive and negative switching periods. Moreover, the inner wall of the cache box is smooth after polyurea treatment and is not easy to hurt fish.

[0075] Fish fry often have to pass through the fish-water separator slide. In order to minimize the damage caused by friction between the fish fry and the leaking grid pipe 9 and the partition 8 in the slide (especially in the second half of the slide, after the fish-water mixture is separated from the water in the first half of the slide), the slide is composed of seamless finely polished pipes made of 316L material and partitions formed by smooth outward-facing plates. This greatly reduces the friction of the fish fry in the slide and is not easy to rust in the marine environment.

[0076] The water in the second half of the slide has been separated out, and only strips of fish fry are left in the slide, sliding towards the outlet of the fish-water separator. The fish fry image processing and counting module 7 is installed just above the second half of the slide of the box-type fish-water separator. Each image processing and counting module 7 corresponds to a slide. Without the influence of water, it is convenient for the image processing and counting module to count more accurately.

[0077] In summary, the present invention can accurately complete the counting of fish fry entering the cabin without reducing the efficiency of fish fry entering the cabin, so that the process of fish fry entering the cabin is smooth and orderly; the vacuum water diversion tank and the vacuum pump are used in conjunction with each other, and water is quickly removed in a short time when counting the fish fry, so as to facilitate accurate counting of the image processing counting module; the vacuum water diversion tank and the vacuum pump are used in conjunction with each other to ensure that the fish fry enter the cabin at a certain speed; while maintaining a relatively high seedling entry speed, the structural design of the partition and the leakage grid pipe on the fish-water separator is used to improve the stability of the fish fry entering the cabin, thereby avoiding injury to the fish fry during the entry process.

Claims

1. A device for separating and counting fish fry entering the cabin of a breeding vessel, characterized by: It includes a conversion joint (3), a fish-water separator (4), a vacuum water induction tank (2), a fry buffer box (1), and a vacuum pump; The fry buffer box (1) is provided on the aquaculture vessel, and the fish-water separator (4) is a hollow cavity with four openings: the top, bottom, left, and right ends. The left end is connected to the fry buffer box (1), the right end is connected to the conversion joint (3), the upper end is connected to the image processing and counting module (7), and the lower end is connected to the vacuum water tank (2); The fish-water separator (4) is provided with an inclined plane formed by a row of leaking grid tubes (9), the axial direction of the leaking grid tubes (9) is the same as the guide direction of the fish-water separator (4), and partitions (8) are provided at equal intervals above the leaking grid tubes (9), the spacing between adjacent partitions (8) is adapted to the width of a fish, and the height of the partitions (8) is not less than the height of a fish standing sideways; There are a plurality of image processing and counting modules (7), which correspond one by one to the areas between adjacent partitions (8); The vacuum pump is arranged in the fry buffer box (1) to provide negative pressure to the fish-water separator (4); The partition (8) is made of stainless steel, the front end of the partition is a quarter of an ellipse, and the cross-section of the rear end is a semi-ellipse; the leaking grid pipe (9) is made of seamless fine polished pipes with gaps evenly distributed between each other. When the fish and water are separated, the water leaks from the gaps between the pipes, between the pipes and the partition (8), and between the pipes and the side wall of the fish and water separator to the vacuum water tank (2), and the fry slides along the slide formed by the adjacent leaking grid pipes (9) to the fry buffer box (1); The partition (8) does not contact the water-leaking grid pipe (9) and has a vertical gap therebetween to ensure that the suction channel of the vacuum water tank (2) is always unobstructed; the supporting profile (10) is arranged in the middle position between the partition (8) and the water-leaking grid pipe (9) to prevent the water-leaking grid pipe (9) and the partition (8) from being deformed by the pressure of the fish water; The fish-water separator (4) is equipped with a liquid level switch interface (5), a pressure sensor interface (6), an image processing and counting module (7), an image processing and counting module installation interface (11), and a supporting profile (10); the functions of fish-water separation and fish-fry counting are realized after the fish fry enter the cabin; the liquid level switch interface (5) is equipped with a tuning fork liquid level switch, and when the liquid level in the vacuum water diversion tank (2) rises to the height of the liquid level switch interface (5), the centrifugal pump of the vacuum water diversion tank (2) of the system is turned on, and the vacuum pump is turned off, and the system continuously separates the fish fry from the water and transfers them to the fish fry buffer box (1) in a constant low vacuum environment; the fish-water separator (4) is equipped with a pressure sensor interface (6) connected to a pressure sensor, and the pressure sensor detects the vacuum pressure in the fish-water separator and then feeds back to the system, thereby adjusting the power of the vacuum pump.

2. The device for separating and counting fish fry entering the cabin of a breeding vessel according to claim 1, characterized in that: The vacuum water tank (2) is connected to the centrifugal pump, and its liquid level is adjusted by the system to maintain continuous pumping of the system.

3. The device for separating and counting fish fry entering the cabin of a breeding vessel as claimed in claim 1, characterized in that: The conversion joint (3) is converted from a pipe with a diameter of DN300mm to a pipe with a rectangular cross section and the same width as the fish-water separator, so that the fish-water mixture is evenly distributed when flowing through the conversion joint and then slides into the fish-water separator.

4. The device for separating and counting fish fry entering the cabin of a breeding vessel as claimed in claim 1, characterized in that: The water outlet (13) below the fish-water separator is connected to the vacuum water tank (2). After the fish-water is separated, the water falls into the vacuum water tank (2) and is then pumped outboard by a centrifugal pump.

5. The device for separating and counting fish fry entering the cabin of a breeding vessel as claimed in claim 1, characterized in that: The fish water inlet (14) at the left end of the fish water separator is first connected to a pneumatic knife gate valve and then connected to the culture cabin of the live fish transport ship.

6. The device for separating and counting fish fry entering the cabin of a breeding vessel as claimed in claim 1, characterized in that: The conversion joint (3), the interior of the fish-water separator (4), and the flange interface are all made of non-toxic and odorless polyurea material; the leaking grid pipe (9) and the partition (8) are made of 316L stainless steel.

7. The device for separating and counting fish fry entering the cabin of a breeding vessel as claimed in claim 1, characterized in that: The bottom surface of the conversion joint (3) and the fish-water separator (4) are on the same plane, and the plane is inclined downward toward the fry cache box.

Images