Fry screening device for aquaculture

Abstract

The utility model relates to the technical field of fish fry screening devices, in particular to a fish fry screening device for aquaculture, which comprises a water bucket and a screening bucket positioned in the water bucket, the screening barrel comprises an annular plate arranged on the upper side of the water barrel, a plurality of first fan-shaped openings formed in the lower side of the screening inner barrel and distributed in an annular array mode, screens arranged in the first openings and the first fan-shaped openings correspondingly, and an adjusting outer barrel slidably matched with the outer wall of the screening inner barrel and attached to the outer wall of the screening inner barrel. The rotary adjusting mechanism is connected with the inner bottom wall of the adjusting outer barrel, the limiting mechanism is arranged on the inner wall of the annular plate, and the rotary adjusting mechanism is rotationally connected with the screening inner barrel; after the device screens the fish fries, the screening barrel containing the large fish fries can be sealed conveniently, and a sufficient moisture environment is provided for transferring the screened large fish fries; and the screening barrel can be used for replacing a fish fishing tool, so that the overall screening efficiency is improved, and meanwhile, the stress reaction possibly suffered in the fish fry screening treatment process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fish fry screening devices, in particular to a fish fry screening device for aquaculture. Background Art

[0002] Fish fry screening is an indispensable process in fishery farming. Generally, when fish fry are put into ponds for breeding, they need to be screened and fry of different sizes should be cultured separately to avoid big fish plundering small fish and snatching food from each other, which will affect the survival rate of small fish.

[0003] In the current fry screening process, the traditional method is to scoop the fry into the screen, then place it in a bucket of water, and achieve graded screening by repeatedly raising and lowering the screen in the bucket. However, there is a significant drawback in this process: when the screening is completed and the screen containing large fry needs to be moved to another area, if the screen fails to maintain sufficient water environment in time, some fry are very likely to suffer survival threats due to lack of water, thereby reducing the survival rate of fry in the overall screening process;

[0004] In addition, the existing screening method also relies on additional fish scooping tools to initially collect the fry to be screened. This step not only increases the complexity of the operation, but also invisibly prolongs the screening cycle, reduces the overall screening efficiency, and increases the stress response that the fry may suffer during the processing, further affecting their health. Utility Model Content

[0005] The utility model aims to provide a fry screening device for aquaculture, which is used to solve the problems that after the existing device has finished screening the fry, the survival rate of the fry is reduced during the screening process due to insufficient water when the large fry in the screen are transferred; and the method of using a fish scooping tool to scoop the fry to be screened into the screen during screening further affects the health of the fry and the screening efficiency during the screening process.

[0006] To achieve the above object, the present utility model provides the following technical solution: A fry screening device for aquaculture, comprising a water bucket and a screening bucket located inside the water bucket. The screening bucket includes an annular plate provided on the upper side of the water bucket, a screening inner bucket connected to the lower side of the annular plate, a plurality of first openings provided on the outer wall of the screening inner bucket and arranged in an annular array, a plurality of first sector openings provided on the lower side of the screening inner bucket and arranged in an annular array, screening nets respectively provided in the first openings and the first sector openings, an adjusting outer bucket slidably fitted on the outer wall of the screening inner bucket and fitting with the outer wall of the screening inner bucket, a plurality of second openings provided on the outer wall of the adjusting outer bucket and corresponding to the plurality of first openings respectively, a plurality of second sector openings provided on the lower side of the adjusting outer bucket and corresponding to the plurality of first sector openings respectively, a rotation adjusting mechanism connected to the inner bottom wall of the adjusting outer bucket, and a limiting mechanism provided on the inner wall of the annular plate. The rotation adjusting mechanism is rotationally connected to the screening inner bucket, and the rotation adjusting mechanism is connected to the limiting mechanism and one end extends above the annular plate.

[0007] Further, the rotation adjusting mechanism includes a rotating rod connected to the inner bottom wall of the adjusting outer bucket and a handle connected to one end of the rotating rod. The rotating rod is rotationally connected to the bottom wall of the screening inner bucket, and the rotating rod is located between the plurality of second sector openings.

[0008] Further, the limiting mechanism includes a plurality of fixing rods connected to the inner wall of the annular plate and arranged in an annular array, an external thread fixing sleeve sleeved on the outer wall of the rotating rod, and an internal thread fixing cover threadedly engaged with the external thread fixing sleeve. The internal thread fixing cover is threadedly connected to the outer wall of the rotating rod, and one ends of the plurality of fixing rods are all connected to the outer wall of the external thread fixing sleeve and located below the internal thread fixing cover.

[0009] Further, an annular sliding groove is provided on the outer wall of the screening inner bucket above the plurality of first openings. Two sliding blocks are slidably fitted inside the annular sliding groove, and one end of each sliding block is connected to the inner wall of the adjusting outer bucket.

[0010] Further, a rubber sealing pad is provided on the inner wall of the adjusting outer bucket.

[0011] Further, two handles are provided on the outer wall of the water bucket and symmetrically arranged along the central axis of the water bucket.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model has the following beneficial effects:

[0014] After the fry screening is completed, operate the limit mechanism so that the rotation adjustment mechanism can be rotated. By rotating the rotation adjustment mechanism, drive the adjustment outer barrel to rotate, so that the multiple second openings and multiple second sector openings of the adjustment outer barrel are misaligned with the multiple first openings and multiple first sector openings on the screening inner barrel. The adjustment outer barrel covers and closes the multiple first openings and multiple first sector openings on the screening inner barrel, and transfers the large fry in the screening barrel and the small fry in the water bucket to the next area respectively. Then, after the device completes the fry screening, it is convenient to perform the closing operation on the screening barrel containing large fry, provides a sufficient water environment for the transfer of large fry after screening, and improves the survival rate of fry in the overall screening process;

[0015] When screening the fry, first, press the annular plate to relatively fix the screening barrel and the water bucket. Then, drive the adjustment outer barrel to rotate through the rotation adjustment mechanism, so that the multiple second openings and multiple second sector openings of the adjustment outer barrel are misaligned with the multiple first openings and multiple first sector openings on the screening inner barrel. The adjustment outer barrel covers and closes the multiple first openings and multiple first sector openings on the screening inner barrel. Then, limit and fix the rotation adjustment mechanism through the limit mechanism to prevent the rotation adjustment mechanism from rotating. Lift the rotation adjustment mechanism by hand, scoop the fry to be screened into the screening barrel, add an appropriate amount of water to the water bucket, and then put the screening barrel into the water bucket. Then, the device can use the screening barrel to replace the fish-catching tool, reduces the complexity of the operation, shortens the screening cycle, improves the overall screening efficiency, and at the same time reduces the possible stress response suffered during the fry screening process. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the fry screening device for aquaculture of the present utility model;

[0017] Figure 2 For the present utility model Figure 1 Enlarged schematic diagram at A in;

[0018] Figure 3 is a schematic sectional view of the fry screening device for aquaculture of the present utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram at B in;

[0020] Figure 5 is a schematic structural diagram of the adjustment outer barrel of the present utility model.

[0021] In the figure: 1, water bucket; 2, screening bucket; 3, annular plate; 4, inner screening bucket; 5, first opening; 6, screen; 7, first sector opening; 8, second sector opening; 9, adjusting outer bucket; 10, second opening; 11, rotary adjusting mechanism; 12, rotating rod; 13, handle; 14, fixed rod; 15, outer thread fixing sleeve; 16, inner thread fixing cover; 17, annular chute; 18, slider; 19, handle. Detailed implementation mode

[0022] Please refer to Figures 1-5 , a fry screening device for aquaculture, including a water bucket 1 and a screening bucket 2 located inside the water bucket 1. The screening bucket 2 includes an annular plate 3 provided on the upper side of the water bucket 1, an inner screening bucket 4 connected to the lower side of the annular plate 3, a plurality of first openings 5 arranged in an annular array on the outer wall of the inner screening bucket 4, a plurality of first sector openings 7 arranged in an annular array on the lower side of the inner screening bucket 4, screens 6 respectively arranged in the first openings 5 and the first sector openings 7, an adjusting outer bucket 9 slidably fitted on the outer wall of the inner screening bucket 4 and fitting against the outer wall of the inner screening bucket 4, a plurality of second openings 10 arranged on the outer wall of the adjusting outer bucket 9 and corresponding to the plurality of first openings 5 respectively, a plurality of second sector openings 8 arranged on the lower side of the adjusting outer bucket 9 and corresponding to the plurality of first sector openings 7 respectively, a rotary adjusting mechanism 11 connected to the inner bottom wall of the adjusting outer bucket 9, and a limiting mechanism arranged on the inner wall of the annular plate 3. The rotary adjusting mechanism 11 is rotatably connected to the inner screening bucket 4, and the rotary adjusting mechanism 11 is connected to the limiting mechanism and one end extends above the annular plate 3;

[0023] When screening fry, first, press the annular plate 3 to relatively fix the screening bucket 2 and the water bucket 1. Then, drive the adjustment outer bucket 9 to rotate through the rotation adjustment mechanism 11, so that a plurality of second openings 10 and a plurality of second sector openings 8 on the adjustment outer bucket 9 are misaligned with a plurality of first openings 5 and a plurality of first sector openings 7 on the screening inner bucket 4. The adjustment outer bucket 9 covers and closes a plurality of first openings 5 and a plurality of first sector openings 7 on the screening inner bucket 4. Then, limit and fix the rotation adjustment mechanism 11 through the limiting mechanism to prevent the rotation adjustment mechanism 11 from rotating. Hold the rotation adjustment mechanism 11 by hand and scoop the fry to be screened into the screening bucket 2. Add an appropriate amount of water to the water bucket 1, and then place the screening bucket 2 into the water bucket 1. Then, operate the limiting mechanism to make the rotation adjustment mechanism 11 rotatable. By rotating the rotation adjustment mechanism 11, drive the adjustment outer bucket 9 to rotate, so that a plurality of second openings 10 and a plurality of second sector openings 8 on the adjustment outer bucket 9 correspond to a plurality of first openings 5 and a plurality of first sector openings 7 on the screening inner bucket 4. Then, limit and fix it through the limiting mechanism. After fixing, drive the screening bucket 2 to repeatedly lift and lower in the water bucket 1 by holding the rotation adjustment mechanism 11 by hand. The small fry enter the water bucket 1 through a plurality of sieve meshes 6, realizing the grading and screening of the fry. After the screening is completed, through the above operation steps, make a plurality of second openings 10 and a plurality of second sector openings 8 on the adjustment outer bucket 9 misaligned with a plurality of first openings 5 and a plurality of first sector openings 7 on the screening inner bucket 4. The adjustment outer bucket 9 covers and closes a plurality of first openings 5 and a plurality of first sector openings 7 on the screening inner bucket 4. Transfer the large fry in the screening bucket 2 and the small fry in the water bucket 1 after screening to the next area respectively. Furthermore, after the device finishes screening the fry, it is convenient to perform a closing operation on the screening bucket 2 containing large fry, providing a sufficient water environment for the transfer of the large fry after screening, improving the survival rate of the fry in the overall screening process; and using the screening bucket 2 can replace the fish-catching tool, reducing the complexity of the operation, shortening the screening cycle, improving the overall screening efficiency, and at the same time reducing the possible stress response suffered during the fry screening process.

[0024] The rotation adjustment mechanism 11 includes a rotating rod 12 connected to the inner bottom wall of the adjustment outer bucket 9 and a handle 13 connected to one end of the rotating rod 12. The rotating rod 12 is rotatably connected to the bottom wall of the screening inner bucket 4, and the rotating rod 12 is located between a plurality of second sector openings 8. By holding the handle 13 by hand and rotating, the rotating rod 12 connected to the handle 13 drives the adjustment outer bucket 9 to rotate.

[0025] The limiting mechanism includes a plurality of fixing rods 14 connected to the inner wall of the annular plate 3 and arranged in an annular array, an external thread fixing sleeve 15 sleeved on the outer wall of the rotating rod 12, and an internal thread fixing cover 16 threadedly engaged with the external thread fixing sleeve 15. The internal thread fixing cover 16 is threadedly connected to the outer wall of the rotating rod 12. One ends of the plurality of fixing rods 14 are all connected to the outer wall of the external thread fixing sleeve 15 and are located below the internal thread fixing cover 16. After the adjusting outer barrel 9 is rotated and adjusted, when the adjusting outer barrel 9 is fixed to the screening inner barrel 4, the internal thread fixing cover 16 is rotated downward so that the internal thread fixing cover 16 rotates to the outer wall of the external thread fixing sleeve 15, thereby relatively fixing the external thread fixing sleeve 15 and the rotating rod 12, playing a role in limiting and fixing the rotating rod 12 located inside the external thread fixing sleeve 15, and at the same time playing a role in limiting and fixing between the adjusting outer barrel 9 and the screening inner barrel 4.

[0026] An annular sliding groove 17 is provided on the outer wall of the screening inner barrel 4 above the plurality of first openings 5. Two sliding blocks 18 are slidably engaged inside the annular sliding groove 17. One end of each sliding block 18 is connected to the inner wall of the adjusting outer barrel 9. When the adjusting outer barrel 9 rotates, the two sliding blocks 18 slide inside the annular sliding groove 17, improving the connection stability between the screening inner barrel 4 and the adjusting outer barrel 9.

[0027] A rubber gasket is provided on the inner wall of the adjusting outer barrel 9. When the adjusting outer barrel 9 covers and seals the plurality of first openings 5 and the plurality of first sector openings 7 on the screening inner barrel 4, through the rubber gasket, the sealing performance between the adjusting outer barrel 9 and the screening inner barrel 4 is improved, preventing water from flowing out through the gap between the adjusting outer barrel 9 and the screening inner barrel 4.

[0028] Two handles 19 are symmetrically arranged along the central axis of the water bucket 1 on the outer wall of the water bucket 1. When transferring the small fry in the water bucket 1 to the next area, by holding the two handles 19 with hands, it is convenient to drive the water bucket 1 to transfer.

[0029] Working principle: When screening fry, first, press the annular plate 3 to relatively fix the screening bucket 2 and the water bucket 1. Then, hold the handle 13 by hand and rotate it. The rotating rod 12 connected to the handle 13 drives the adjusting outer barrel 9 to rotate. The two sliders 18 slide in the annular chute 17, so that the multiple second openings 10 and multiple second sector openings 8 of the adjusting outer barrel 9 are misaligned with the multiple first openings 5 and multiple first sector openings 7 on the screening inner barrel 4. The adjusting outer barrel 9 covers and closes the multiple first openings 5 and multiple first sector openings 7 on the screening inner barrel 4. Then, after the adjusting outer barrel 9 is rotated and adjusted, when the adjusting outer barrel 9 and the screening inner barrel 4 are fixed, rotate the internal thread fixing cover 16 downward, so that the internal thread fixing cover 16 rotates to the outer wall of the external thread fixing sleeve 15, thereby relatively fixing the external thread fixing sleeve 15 and the rotating rod 12, playing a role in limiting and fixing the rotating rod 12 located in the external thread fixing sleeve 15 and preventing the rotation adjusting mechanism 11 from rotating. Hold the handle 13 by hand and scoop the fry to be screened into the screening bucket 2. Add an appropriate amount of water into the water bucket 1, then place the screening bucket 2 into the water bucket 1. Then, operate to rotate the internal thread fixing cover 16 upward, so that the internal thread fixing cover 16 is separated from the external thread fixing sleeve 15, making the rotation adjusting mechanism 11 rotatable. Hold the handle 13 by hand and rotate it. The rotating rod 12 connected to the handle 13 drives the adjusting outer barrel 9 to rotate. The two sliders 18 slide in the annular chute 17, so that the multiple second openings 10 and multiple second sector openings 8 of the adjusting outer barrel 9 correspond to the multiple first openings 5 and multiple first sector openings 7 on the screening inner barrel 4. Then, fix it through the limiting mechanism. After fixing, hold the rotation adjusting mechanism 11 by hand and drive the screening bucket 2 to repeatedly lift and lower in the water bucket 1. The small fry enter the water bucket 1 through the multiple sieve meshes 6, realizing the classification screening of the fry. After the screening is completed, through the above operation steps, the multiple second openings 10 and multiple second sector openings 8 of the adjusting outer barrel 9 are misaligned with the multiple first openings 5 and multiple first sector openings 7 on the screening inner barrel 4. The adjusting outer barrel 9 covers and closes the multiple first openings 5 and multiple first sector openings 7 on the screening inner barrel 4. Transfer the large fry in the screening bucket 2 and the small fry in the water bucket 1 after screening to the next area respectively. Furthermore, after the device finishes screening the fry, it is convenient to perform a closing operation on the screening bucket 2 containing large fry, providing a sufficient water environment for the transfer of the screened large fry, improving the survival rate of the fry during the overall screening process; and using the screening bucket 2 can replace the fish-catching tool, reducing the complexity of the operation, shortening the screening cycle, improving the overall screening efficiency, and at the same time reducing the possible stress response suffered during the fry screening process.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fry screening device for aquaculture, comprising a water bucket (1) and a screening bucket (2) located inside the water bucket (1), characterized in that, The screening bucket (2) includes an annular plate (3) provided on the upper side of the water bucket (1), a screening inner bucket (4) connected to the lower side of the annular plate (3), a plurality of first openings (5) provided on the outer wall of the screening inner bucket (4) and arranged in an annular array, a plurality of first sector openings (7) provided on the lower side of the screening inner bucket (4) and arranged in an annular array, a screen (6) respectively provided in the first openings (5) and the first sector openings (7), an adjustment outer bucket (9) slidably fitted on the outer wall of the screening inner bucket (4) and attached to the outer wall of the screening inner bucket (4), a second opening (10) provided on the outer wall of the adjustment outer bucket (9) and corresponding to the plurality of first openings (5) respectively, a second sector opening (8) provided on the lower side of the adjustment outer bucket (9) and corresponding to the plurality of first sector openings (7) respectively, a rotation adjustment mechanism (11) connected to the inner bottom wall of the adjustment outer bucket (9), and a limiting mechanism provided on the inner wall of the annular plate (3). The rotation adjustment mechanism (11) is rotationally connected to the screening inner bucket (4), and the rotation adjustment mechanism (11) is connected to the limiting mechanism and one end extends above the annular plate (3).

2. The fry screening device for aquaculture according to claim 1, wherein, The rotation adjustment mechanism (11) includes a rotating rod (12) connected to the inner bottom wall of the adjustment outer bucket (9), and a handle (13) connected to one end of the rotating rod (12). The rotating rod (12) is rotationally connected to the bottom wall of the screening inner bucket (4), and the rotating rod (12) is located between the plurality of second sector openings (8).

3. The fry screening device for aquaculture according to claim 2, characterized in that, The limiting mechanism includes a plurality of fixing rods (14) connected to the inner wall of the annular plate (3) and arranged in an annular array, an external thread fixing sleeve (15) sleeved on the outer wall of the rotating rod (12), and an internal thread fixing cover (16) threadedly engaged with the external thread fixing sleeve (15). The internal thread fixing cover (16) is threadedly connected to the outer wall of the rotating rod (12), and one end of each of the plurality of fixing rods (14) is connected to the outer wall of the external thread fixing sleeve (15) and located below the internal thread fixing cover (16).

4. The fry screening device for aquaculture according to claim 1, wherein An annular sliding groove (17) is provided on the outer wall of the screening inner bucket (4) above the plurality of first openings (5). Two sliding blocks (18) are slidably fitted in the annular sliding groove (17), and one end of each sliding block (18) is connected to the inner wall of the adjustment outer bucket (9).

5. The fry screening device for aquaculture according to claim 1, characterized in that, A rubber sealing pad is provided on the inner wall of the adjustment outer bucket (9).

6. The fry screening device for aquaculture according to claim 1, wherein, Two handles (19) are provided on the outer wall of the water bucket (1) and arranged symmetrically along the central axis of the water bucket (1).

Images