Captive device for capturing large and remaining small screened fishes

Abstract

The utility model discloses a captive device for capturing large and remaining small screened fishes, which relates to the technical field of cultivation and comprises a fixed plate, a fixed plate, a fixed plate, a fixed plate and a fixed plate, and a through groove is formed in the middle of the fixed plate; bottom rods are evenly and transversely arranged at the bottoms of the inner walls of the through grooves, sliding grooves are formed in the front sides and the rear sides of the inner walls of the through grooves, sliding blocks are evenly and slidably connected into the sliding grooves, ejector rods located above the bottom rods are connected between the sliding blocks on the front side and the rear side, and the sliding blocks on the front side and the rear side in the middle are fixedly connected to the through grooves on the front side and the rear side respectively. According to the device, automatic screening can be achieved, the labor intensity is reduced, the distance between the adjacent top rods is reduced by shortening the electric telescopic rods, so that the gaps between the top rods and the bottom rods are reduced, accurate screening can be conducted according to the sizes of fish bodies, large fishes are left on the device, small fishes escape downwards through the gaps, and efficient grading fishing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture, and particularly relates to a device for sieving fish by enclosing and capturing large fish while leaving small fish Background Technique

[0002] Most of the existing technologies rely on manual selection of fish, which cannot achieve accurate and efficient grading and screening. Especially in large water surfaces or high-density aquaculture environments, the efficiency is low, and the traditional manual selection method has a high labor intensity, is prone to cause mechanical damage to the fish body, affects the survival rate and quality of the fish, increases the aquaculture cost and loss. Therefore, we propose a device for sieving fish by enclosing and capturing large fish while leaving small fish Content of the Utility Model

[0003] The purpose of the utility model is to provide a device for sieving fish by enclosing and capturing large fish while leaving small fish, so as to solve the problems raised in the above background technique

[0004] To achieve the above purpose, the utility model provides the following technical solution: a device for sieving fish by enclosing and capturing large fish while leaving small fish, including a fixing plate, and a through groove is arranged in the middle of the fixing plate

[0005] The bottom of the inner wall of the through groove is evenly provided with bottom rods horizontally, and the front and rear sides of the inner wall of the through groove are both provided with sliding grooves, and the sliding grooves are evenly connected with sliding blocks in a sliding manner. A top rod located above the bottom rods is connected between the front and rear sliding blocks on both sides. Among them, the front and rear sliding blocks in the middle are respectively fixedly connected to the through grooves on the front and rear sides

[0006] An electric telescopic rod is connected between adjacent sliding blocks

[0007] As a preferred scheme of the device for sieving fish by enclosing and capturing large fish while leaving small fish described in the utility model, wherein: the fixing plate is of a circular structure

[0008] As a preferred scheme of the device for sieving fish by enclosing and capturing large fish while leaving small fish described in the utility model, wherein: the fixing plate, the bottom rods, the top rods and the sliding blocks are all made of stainless steel

[0009] As a preferred scheme of the device for sieving fish by enclosing and capturing large fish while leaving small fish described in the utility model, wherein: a first protective layer is arranged on the outer side of the bottom rods, and a second protective layer is arranged on the outer side of the top rods

[0010] As a preferred scheme of the device for sieving fish by enclosing and capturing large fish while leaving small fish described in the utility model, wherein: both the first protective layer and the second protective layer are plastic coatings

[0011] As a preferred scheme of the device for sieving fish by enclosing and capturing large fish while leaving small fish described in the utility model, wherein: both the first protective layer and the second protective layer are rubber layers

[0012] As a preferred embodiment of the device for sieving fish by capturing large ones and retaining small ones in captivity according to the present utility model, the following is provided: Suspension rings are provided on both sides of the top of the fixed plate. A circular connecting plate is provided on the top of the fixed plate, and the diameter of the connecting plate is the same as that of the fixed plate. A downwardly inclined curved surface is provided on the top of the connecting plate, and a fixing groove opposite to the through groove is provided in the middle of the connecting plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. It can perform sieving automatically, reducing labor intensity. By shortening the electric telescopic rod, the distance between adjacent top rods becomes smaller, so that the gap between the top rod and the bottom rod becomes smaller. Furthermore, accurate sieving can be carried out according to the size of the fish body, enabling large fish to remain on the device and small fish to escape downward through the gap, achieving efficient grading fishing.

[0015] 2. By adopting the first protective layer and the second protective layer made of plastic coating or rubber layer, when using the device for sieving, abrasions and collision damages to the fish body can be reduced, thus ensuring the health of the fish and improving the quality and market value of the finished fish. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the device for sieving fish by capturing large ones and retaining small ones in captivity according to the present utility model;

[0017] Figure 2 It is a schematic cross-sectional view of the overall structure of the device for sieving fish by capturing large ones and retaining small ones in captivity according to the present utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the suspension ring and the connecting plate of the device for sieving fish by capturing large ones and retaining small ones in captivity according to the present utility model.

[0019] In the figure: 1. Fixed plate; 2. Through groove; 3. Bottom rod; 4. Suspension ring; 5. Top rod; 6. Slide block; 7. Slide groove; 8. Electric telescopic rod; 9. First protective layer; 10. Second protective layer; 11. Connecting plate; 12. Curved surface; 13. Fixing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] As mentioned in the background art, in view of the problems in the prior art that it is impossible to automatically screen and classify finished fish, and the labor intensity of manual selection is high and the fish body is greatly damaged. The utility model provides a device for screening fish by captive breeding and catching large ones while leaving small ones.

[0022] Embodiment 1

[0023] Refer to Figure 1 , a device for screening fish by captive breeding and catching large ones while leaving small ones, including a fixed plate 1. A through groove 2 is arranged in the middle of the fixed plate 1. The fixed plate 1 is of a circular structure, which is convenient to be fitted and placed into the breeding barrel.

[0024] At the bottom of the inner wall of the through groove 2, bottom rods 3 are evenly arranged horizontally. On the front and rear sides of the inner wall of the through groove 2, sliding grooves 7 are arranged. In the sliding grooves 7, sliding blocks 6 are evenly and slidably connected. Between the front and rear sliding blocks 6 on both sides, there is a top rod 5 located above the bottom rods 3. Among them, the front and rear sliding blocks 6 in the middle are respectively fixedly connected to the through grooves 2 on the front and rear sides, and the other sliding blocks 6 can slide on the sliding grooves 7.

[0025] An electric telescopic rod 8 is connected between adjacent sliding blocks 6. The electric telescopic rod 8 has a certain waterproof level.

[0026] The fixed plate 1, the bottom rods 3, the top rods 5 and the sliding blocks 6 are all made of stainless steel, with a smooth surface, and have the characteristics of corrosion resistance and wear resistance.

[0027] The bottom rods 3 and the top rods 5 can be made of stainless steel rods with a diameter of 200 mm.

[0028] Put the fixed plate 1 into the breeding barrel until it reaches the bottom of the breeding barrel. At this time, the fish body is frightened and starts to swim upward through the gap between the bottom rods 3 and the top rods 5, and swims above the fixed plate 1. At this time, remotely control the electric telescopic rod 8 to shorten through the prior art. The shortening of the electric telescopic rod 8 on the middle sliding block 6 can make the other top rods 5 except the middle top rod 5 move towards the middle top rod 5. Then, shorten the other electric telescopic rods 8 one by one, and the distance between adjacent top rods 5 can be made smaller, so that the gap between the top rods 5 and the bottom rods 3 becomes smaller. At this time, move the fixed plate 1 upward until it leaves the water surface of the breeding barrel, and the large fish can be left on the device, and the small fish can escape downward through the gap and return to the breeding barrel, which is suitable for large-scale farms.

[0029] Sensors can also be added to the device to monitor the fish density and water quality parameters during the screening process in real time, so as to optimize the screening conditions and the operation efficiency of the device.

[0030] Embodiment 2

[0031] Refer to Figure 2, a first protective layer 9 is provided on the outer side of the bottom rod 3, and a second protective layer 10 is provided on the outer side of the top rod 5. Both the first protective layer 9 and the second protective layer 10 are plastic coatings, and both the first protective layer 9 and the second protective layer 10 are rubber layers. When using the device for sieving, abrasions and collision damages to the fish body can be reduced, thus ensuring the health of the fish and improving the quality and market value of the finished fish.

[0032] All other structures are the same as those in Embodiment 1.

[0033] Embodiment 3

[0034] Refer to Figure 3 , in order to facilitate the movement of the device, lifting rings 4 are provided on both sides of the top of the fixing plate 1 for connecting a steel wire rope for lifting, so that the fixing plate 1 can be lifted. In order to prevent fish from running out of the fixing plate 1 when the fixing plate 1 is removed, a circular connecting plate 11 can be provided on the top of the fixing plate 1, and the diameter of the connecting plate 11 is the same as the diameter of the fixing plate 1, so that the connecting plate 11 can also enter and exit the breeding barrel. A downwardly inclined curved surface 12 is provided on the top of the connecting plate 11, and a fixing groove 13 opposite to the through groove 2 is provided in the middle of the connecting plate 11. The curved surface 12 enables the fish to slide downward and fall into the through groove 2 to prevent the fish from running out.

[0035] All other structures are the same as those in Embodiment 2.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An apparatus for sieving fish by captive breeding to catch large ones and retain small ones, characterized in that: including, a fixing plate (1), a through groove (2) is arranged in the middle of the fixing plate (1); at the bottom of the inner wall of the through groove (2), bottom rods (3) are evenly arranged horizontally, on the front and rear sides of the inner wall of the through groove (2), sliding grooves (7) are arranged, in the sliding grooves (7), sliding blocks (6) are evenly and slidably connected, between the front and rear sliding blocks (6) on both sides, a top rod (5) located above the bottom rods (3) is connected, wherein, the front and rear sliding blocks (6) in the middle are respectively fixedly connected to the through grooves (2) on the front and rear sides; between adjacent sliding blocks (6), electric telescopic rods (8) are connected.

2. The device for sieving fish by capturing large ones and leaving small ones in captivity according to claim 1, characterized in that: The fixing plate (1) has a circular structure.

3. The device for sieving fish by capturing large ones and leaving small ones in captivity according to claim 1, characterized in that: The fixing plate (1), the bottom rods (3), the top rod (5) and the sliding blocks (6) are all made of stainless steel.

4. The device for sieving fish by capturing large ones and leaving small ones in captivity according to claim 1, characterized in that: On the outer side of the bottom rod (3), a first protective layer (9) is arranged, on the outer side of the top rod (5), a second protective layer (10) is arranged.

5. The device for sieving fish by capturing large fish and leaving small fish in captivity according to claim 4, characterized in that: Both the first protective layer (9) and the second protective layer (10) are plastic coatings.

6. The device for sieving fish by capturing large ones and leaving small ones in captivity according to claim 4, characterized in that: Both the first protective layer (9) and the second protective layer (10) are rubber layers.

7. The device for sieving fish by captive breeding and catching large ones while leaving small ones according to claim 1, characterized in that: On both sides of the top of the fixing plate (1), suspension rings (4) are arranged, on the top of the fixing plate (1), a circular connecting plate (11) is arranged, and the diameter of the connecting plate (11) is the same as that of the fixing plate (1), on the top of the connecting plate (11), a downwardly inclined curved surface (12) is arranged, in the middle of the connecting plate (11), a fixing groove (13) opposite to the through groove (2) is arranged.

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