High-quality shrimp seed screening device

Abstract

The utility model provides a high-quality shrimp seed screening device which comprises a water tank, an isolation mechanism arranged in the middle of the water tank, a rack arranged at the top of the water tank, a moving mechanism arranged at the top of the rack, a first hydraulic rod connected to the bottom of the moving mechanism, a first U-shaped frame connected to the telescopic end of the first hydraulic rod, and a screening barrel connected to the bottom face of the first U-shaped frame. A second U-shaped frame is arranged on the side face of the screening barrel, a cylinder is arranged on the second U-shaped frame, safety nets are arranged at the two ends of the cylinder, first motors are arranged on the side faces of the safety nets, propellers are arranged on output shafts of the first motors, a first screen and a second screen are oppositely arranged at the two ends of the screening barrel, and an inducing lamp is arranged at the top in the screening barrel. According to the shrimp seed screening device, the luring lamp is used for attracting shrimp seeds to swim into the screening barrel, then the first screening net and the second screening net are closed, the propeller is started to manufacture water flow, the shrimp seeds small in size and weak in swimming capacity are pushed out of the second screening net through the water flow, high-quality shrimp seeds are transferred into the water tank on the other side of the isolation mechanism under driving of the moving mechanism, and the screening efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of shrimp fry screening, in particular to a high-quality shrimp fry screening device. Background Technique

[0002] As an important resource for aquaculture, the quality of shrimp fry is directly related to the yield and quality of aquatic products. High-quality shrimp fry not only grow rapidly and have strong disease resistance, but also can significantly improve the economic benefits of aquaculture. However, during the cultivation process of shrimp fry, due to the influence of various factors such as environment and nutrition, there are differences in the individual size, vitality, etc. of shrimp fry, which requires screening of shrimp fry for better aquaculture management. As an aquatic organism, shrimp fry has phototaxis. This characteristic makes shrimp fry show obvious activity and mobility under light conditions. During the screening process, by using the phototaxis of shrimp fry, shrimp fry can be effectively guided into the screening device, improving the efficiency and accuracy of screening. The screening of high-quality shrimp fry is very important for the entire aquaculture process. Through screening, shrimp fry with similar sizes and vitality can be concentrated together, providing convenience for subsequent aquaculture management. At the same time, screening can also remove substandard shrimp fry such as weak, diseased, and deformed ones, reducing the risk of disease transmission and ensuring the health of the aquaculture environment. High-quality shrimp fry screening devices are generally made of transparent materials, using light sources to attract shrimp fry into the screening area. Different aperture sieves are provided inside the device, and by adjusting the aperture and angle of the sieves, screening of shrimp fry of different sizes can be achieved. At the same time, the device is also equipped with a circulating water flow system to keep the water quality in the screening area fresh and stable. In the prior art, there are the following problems with high-quality shrimp fry screening devices: Shrimp fry are screened by adjusting the sieve hole size, but high-quality shrimp fry are required to be not only relatively large in size but also able to swim actively, and the existing screening devices cannot meet the screening requirements. Content of the Utility Model

[0003] In view of this, the utility model proposes a high-quality shrimp fry screening device to solve the problems existing above.

[0004] The technical solution of the utility model is realized as follows:

[0005] A high-quality shrimp fry screening device, including a water tank, an isolation mechanism is arranged in the middle of the water tank, a frame is arranged at the top of the water tank, a moving mechanism is arranged at the top of the frame, a first hydraulic rod is connected to the bottom of the moving mechanism, a telescopic end of the first hydraulic rod is connected to a first U-shaped frame, a screening cylinder is connected to the bottom surface of the first U-shaped frame, a second U-shaped frame is arranged on the side surface of the screening cylinder, a cylinder is arranged on the second U-shaped frame, safety nets are arranged at both ends of the cylinder, a first motor is arranged on the side surface of the safety net, a propeller is arranged on an output shaft of the first motor, an axis of the propeller coincides with a center line of the screening cylinder, a first screen is slidably arranged at one end of the screening cylinder, a telescopic end of a second hydraulic rod is connected to the top of the first screen, the second hydraulic rod is arranged on the bottom surface of the first U-shaped frame, a second screen is slidably arranged at the other end of the screening cylinder, a telescopic end of a third hydraulic rod is connected to the top of the second screen, the third hydraulic rod is arranged on the bottom surface of the first U-shaped frame, and a lure lamp is arranged at the top inside the screening cylinder.

[0006] Preferably, the moving mechanism includes a lead screw, a second motor and a moving block. The lead screw is rotatably arranged at the top of the top frame, one end of which is rotatably connected to the frame, the other end passes through the frame and is drivingly connected to the second motor. The second motor is arranged on the side surface of the frame, and the moving block is arranged on the lead screw and is slidably connected to the frame.

[0007] Preferably, it further includes a first discharge port and a second discharge port. The first discharge port and the second discharge port are oppositely arranged on both sides of the bottom of the water tank. A first valve is arranged at the first discharge port, and a second valve is arranged in the second discharge port.

[0008] Preferably, the isolation mechanism includes a slide plate, rollers, a partition plate and a filter screen. The slide plate is arranged above the water tank, the rollers are oppositely arranged on the bottom surface of the slide plate and the bottom abuts against the top surface of the water tank, the partition plate is arranged inside the water tank and the top is connected to the bottom surface of the slide plate, and the filter screen is arranged on the partition plate.

[0009] Preferably, the screening cylinder is made of acrylic transparent material.

[0010] Preferably, a boss is arranged at the bottom of the partition plate, and a chute is arranged at the bottom of the water tank. The boss is slidably arranged in the chute.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] 1. Use the attracting lamp to attract the shrimp larvae to swim into the screening cylinder. Then, close the first screen and start the propeller to create water flow. Under the pushing action of the water flow, the shrimp larvae with weaker swimming ability will be pushed out of the screening cylinder by the water flow. Then, start the third hydraulic rod. The telescopic end of the third hydraulic rod extends to drive the second screen to descend, separating the outlet at one end of the screening cylinder. Then, increase the rotation speed of the propeller. Under the pushing of the water flow, the smaller shrimp larvae are pushed out through the second screen, and the shrimp larvae with strong swimming ability and larger size are left in the screening cylinder, completing the screening operation, meeting the screening requirements of high-quality shrimp larvae, and having a relatively high screening efficiency.

[0013] 2. After the screening operation is completed, the screened high-quality shrimp larvae can be transferred to the water tank on the other side of the isolation mechanism under the drive of the moving mechanism. The bottom of the water tank is provided with a first row of outlets and a second row of outlets, which can facilitate the discharge of the shrimp larvae.

[0014] 3. The isolation mechanism can slide in the water tank and can allocate the space of the two sides of the water tank according to requirements. Narrowing the space is conducive to quickly concentrating the shrimp larvae and discharging them from the first row of outlets or the second row of outlets, improving the discharge efficiency of the shrimp larvae. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the preferred embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a three-dimensional structural schematic diagram of a high-quality shrimp larvae screening device of the present invention;

[0017] Figure 2 is a cross-sectional structural schematic diagram of a high-quality shrimp larvae screening device of the present invention;

[0018] Figure 3 is Figure 2 a cross-sectional view at A in

[0019] Figure 4 is Figure 2 an enlarged view at B-B in

[0020] Reference numerals: 1, water tank; 2, slide plate; 3, frame; 4, lead screw; 5, first motor; 6, moving block; 7, first hydraulic rod; 8, first U-shaped frame; 9, screening cylinder; 10, second U-shaped frame; 11, cylinder; 12, safety net; 13, first row outlet; 14, second row outlet; 15, first valve; 16, second valve; 17, chute; 18, second hydraulic rod; 19, first screen; 20, third hydraulic rod; 21, second screen; 22, attracting lamp; 23, roller; 24, second motor; 25, propeller; 26, partition; 27, filter screen; 28, boss. Detailed implementation manner

[0021] In order to better understand the technical content of the present utility model, a specific embodiment is provided below, and the present utility model will be further described in conjunction with the accompanying drawings.

[0022] See Figures 1 to 4 , a high-quality shrimp seedling screening device provided by the present utility model includes a water tank 1, an isolation mechanism is arranged in the middle of the water tank 1, a frame 3 is arranged at the top of the water tank 1, a moving mechanism is arranged at the top of the frame 3, a first hydraulic rod 7 is connected to the bottom of the moving mechanism, a telescopic end of the first hydraulic rod 7 is connected to a first U-shaped frame 8, a screening cylinder 9 is connected to the bottom surface of the first U-shaped frame 8, a second U-shaped frame 10 is arranged on the side surface of the screening cylinder 9, a cylinder 11 is arranged on the second U-shaped frame 10, safety nets 12 are arranged at both ends of the cylinder 11, and the function of the safety nets 12 is to isolate shrimp seedlings to avoid being inhaled and damaged. A first motor 5 is arranged on the side surface of the safety net 12, a propeller 25 is arranged on the output shaft of the first motor 5, the axis of the propeller 25 coincides with the center line of the screening cylinder 9, and the water flow generated when the propeller 25 rotates passes through the screening cylinder 9. A first screen 19 is slidably arranged at one end of the screening cylinder 9, a telescopic end of a second hydraulic rod 18 is connected to the top of the first screen 19, and the second hydraulic rod 18 is arranged on the bottom surface of the first U-shaped frame 8. A second screen 21 is slidably arranged at the other end of the screening cylinder 9, a telescopic end of a third hydraulic rod 20 is connected to the top of the second screen 21, and the third hydraulic rod 20 is arranged on the bottom surface of the first U-shaped frame 8. An attracting lamp 22 is arranged at the top inside the screening cylinder 9, and the attracting lamp 22 adopts a waterproof type electric lamp.

[0023] When the shrimp fry screening device is working, first place the shrimp fry in the water tank 1 on one side of the isolation mechanism, then start the moving mechanism. The moving mechanism drives the first hydraulic rod 7 to move to the middle of one side of the water tank 1. Then start the first hydraulic rod 7. The telescopic end of the first hydraulic rod 7 extends to drive the first U-shaped frame 8 to descend. The descent of the first U-shaped frame 8 drives the screening cylinder 9 to descend. When the screening cylinder 9 descends below the liquid level, stop the first hydraulic rod 7. Then start the attracting lamp 22. The attracting lamp 22 emits light to attract the shrimp fry. The shrimp fry will swim into the screening cylinder 9 from both sides of the screening cylinder 9. Then start the second hydraulic rod 18. The telescopic end of the second hydraulic rod 18 extends to drive the first screen 19 to descend, separating the outlet at one end of the screening cylinder 9. Start the propeller 25 to create water flow. Under the pushing action of the water flow, the shrimp fry with weaker swimming ability will be pushed out of the screening cylinder 9 by the water flow. Then start the third hydraulic rod 20. The telescopic end of the third hydraulic rod 20 extends to drive the second screen 21 to descend, separating the outlet at one end of the screening cylinder 9. The screen holes of the second screen 21 are larger. Then increase the rotation speed of the propeller 25. Under the pushing of the water flow, the smaller-sized shrimp fry will be pushed out through the second screen 21. The shrimp fry with strong swimming ability and larger size will be left in the screening cylinder 9, completing the screening operation, meeting the screening requirements of high-quality shrimp fry, and having a relatively high screening efficiency.

[0024] Preferably, the moving mechanism includes a lead screw 4, a second motor 24, and a moving block 6. The lead screw 4 is rotatably arranged on the top of the top frame, one end of which is rotatably connected to the frame 3, and the other end passes through the frame 3 and is drivingly connected to the second motor 24. The second motor 24 is arranged on the side of the frame 3. The second motor 24 is a stepper motor that can control the rotation angle. The moving block 6 is arranged on the lead screw 4 and is slidably connected to the frame 3.

[0025] When the screening device is working, the moving mechanism is required to drive the first hydraulic rod 7 to move horizontally. Start the second motor 24. The second motor 24 rotates to drive the lead screw 4 to rotate. The lead screw 4 and the moving block 6 are threadedly connected. The lead screw 4 drives the moving block 6 to move along the lead screw 4, thereby driving the first hydraulic rod 7 to move horizontally to complete the relevant screening operation.

[0026] Preferably, it further includes a first discharge outlet 13 and a second discharge outlet 14. The first discharge outlet 13 and the second discharge outlet 14 are oppositely arranged on both sides of the bottom of the water tank 1. A first valve 15 is arranged at the first discharge outlet 13, and a second valve 16 is arranged in the second discharge outlet 14.

[0027] Opening the first valve 15 can discharge the shrimp fry in the water tank 1 on one side of the isolation mechanism, and opening the second valve 16 can discharge the shrimp fry in the water tank 1 on the other side of the isolation mechanism, facilitating the transfer of the shrimp fry.

[0028] Preferably, the isolation mechanism includes a sliding plate 2, rollers 23, a partition plate 26, and a filter screen 27. The sliding plate 2 is arranged above the water tank 1. The rollers 23 are relatively arranged on the bottom surface of the sliding plate 2 and the bottom thereof abuts against the top surface of the water tank 1. The partition plate 26 is arranged in the water tank 1 and its top is connected to the bottom surface of the sliding plate 2. The filter screen 27 is arranged on the partition plate 26.

[0029] After the screening operation of high-quality shrimp larvae is completed, the screened high-quality shrimp larvae can be transferred to the water tank 1 on the other side of the isolation mechanism driven by the moving mechanism. The sliding plate 2 drives the rollers 23 to slide on the top surface of the water tank 1. The filter screen 27 can realize the function that the water in the water tanks 1 on both sides of the partition plate 26 can pass freely, while shrimp larvae and impurities cannot pass through. According to requirements, sliding the sliding plate 2 can allocate the space of the water tanks 1 on both sides. Narrowing the space is beneficial to quickly concentrate the shrimp larvae and discharge them from the first row of outlets 13 or the second row of outlets 14, improving the discharging efficiency of shrimp larvae.

[0030] Preferably, the screening cylinder 9 is made of acrylic transparent material.

[0031] When the screening device works, turn on the attracting lamp 22 inside the screening cylinder 9. Since the screening cylinder 9 is made of acrylic transparent material, the light emitted by the attracting lamp 22 can pass through the screening cylinder 9, improving the effect of attracting shrimp larvae in all directions.

[0032] Preferably, a boss 28 is arranged at the bottom of the partition plate 26, and a sliding groove 17 is arranged at the bottom of the water tank 1. The boss 28 is slidably arranged in the sliding groove 17.

[0033] In order to ensure the isolation effect of the isolation mechanism on the water tank 1, a sliding groove 17 is arranged at the bottom of the water tank 1. When the partition plate 26 needs to be moved to one side, the boss 28 slides in the sliding groove 17 to prevent the partition plate 26 from tilting, resulting in shrimp larvae and sundries passing through the gap.

[0034] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-quality shrimp fry screening device, characterized in that: It includes a water tank, an isolation mechanism is provided in the middle of the water tank, a frame is provided on the top of the water tank, a moving mechanism is provided on the top of the frame, a first hydraulic rod is connected to the bottom of the moving mechanism, the telescopic end of the first hydraulic rod is connected to the first U-shaped frame, the bottom surface of the first U-shaped frame is connected to a screening drum, a second U-shaped frame is provided on the side of the screening drum, a cylinder is provided on the second U-shaped frame, safety nets are provided at both ends of the cylinder, a first motor is provided on the side of the safety net, a propeller is provided on the output shaft of the first motor, the axis of the propeller coincides with the center line of the screening drum, a first screen is slidably provided at one end of the screening drum, the top of the first screen is connected to the telescopic end of the second hydraulic rod, the second hydraulic rod is arranged on the bottom surface of the first U-shaped frame, the other end of the screening drum is slidably provided with a second screen, the top of the second screen is connected to the telescopic end of the third hydraulic rod, the third hydraulic rod is arranged on the bottom surface of the first U-shaped frame, and an attracting light is provided on the top of the screening drum.

2. A high-quality shrimp fry screening device according to claim 1, characterized in that: The moving mechanism includes a screw rod, a second motor and a moving block. The screw rod is rotatably arranged on the top of the top frame, one end of which is rotatably connected to the frame, and the other end passes through the frame and is driven to the second motor. The second motor is arranged on the side of the frame. The moving block is arranged on the screw rod and is slidably connected to the frame.

3. A high-quality shrimp fry screening device according to claim 1, characterized in that: It also includes a first outlet and a second outlet. The first outlet and the second outlet are arranged at two sides of the bottom of the water tank opposite to each other. The first outlet is provided with a first valve, and the second outlet is provided with a second valve.

4. A high-quality shrimp fry screening device according to claim 1, characterized in that: The isolation mechanism includes a slide plate, a roller, a partition and a filter. The slide plate is arranged above the water tank. The roller is relatively arranged on the bottom surface of the slide plate and the bottom is abutted against the top surface of the water tank. The partition plate is arranged in the water tank and the top is connected to the bottom surface of the slide plate. The filter is arranged on the partition plate.

5. A high-quality shrimp fry screening device according to claim 1, characterized in that: The screening cylinder is made of transparent acrylic material.

6. A high-quality shrimp fry screening device according to claim 4, characterized in that: A boss is provided at the bottom of the partition, a slide groove is provided at the bottom of the water tank, and the boss is slidably arranged in the slide groove.

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