Tilapia mossambica screening device

Abstract

The tilapia mossambica screening device comprises a frame-shaped hanging bracket body with an opening in the top, and a tilapia mossambica inlet is formed in one side of the frame-shaped hanging bracket body; the frame-shaped hanging bracket main body comprises a plurality of connecting rods; the device further comprises a plurality of handrails which are perpendicular to the connecting rods and movably connected with the connecting rods, gaps allowing small fishes to penetrate through are formed between the adjacent handrails, and the handrails are connected with the connecting rods through locking structures. The tilapia mossambica screening device can adapt to different types of fishes by adjusting the distance between the handrails, and is good in universality.

Description

Technical Field

[0001] The utility model relates to the field of fish screening, in particular to a tilapia screening device. Background Art

[0002] In the process of fish farming in fish ponds, different fish in the same batch will have different sizes due to the different stocking sizes, food competition and individual differences. If the whole batch of fish is caught and sold at the same time, the smaller fish in the same batch cannot be sold at an appropriate price, and the fishmongers will take the opportunity to lower the price, resulting in user losses. Small-sized fish can continue to be farmed and sold after they reach the specifications.

[0003] Although the gaps in the frame-type hanger can filter out small fish, the gaps in the railings of the frame-type hanger are fixed and cannot be used for different types of fish. In addition, once the frame-type hanger takes the fish out of the water, the fish will react violently after leaving the water. Unlike soft fishing nets, the railings of the frame-type hanger are narrow and hard, so the fish hit the railings with a small impact area, and without water as a buffer, the impact force on the fish surface will be very large, and the fish will be easily injured, resulting in a low survival rate after each batch of fish is caught. Utility Model Content

[0004] The utility model aims to provide a tilapia screening device, which can adapt to different kinds of fish by adjusting the distance between rails and has good versatility.

[0005] To achieve the above-mentioned purpose, the utility model provides a tilapia screening device, comprising a frame-type hanger body with an opening on the top, and a fish entrance on one side of the frame-type hanger body; the frame-type hanger body comprises a plurality of connecting rods; and also comprises a plurality of railings which are arranged perpendicularly to the connecting rods and movably connected, and gaps for small fish to pass through are formed between adjacent railings, and the railings and the connecting rods are connected by a locking structure.

[0006] As a further improvement of the present invention, a spacing adjustment slot is provided on the connecting rod, the railing passes through the spacing adjustment slot and the two are slidably matched; the locking structure includes a nut threadedly connected to the outside of the railing, and the nut is located on both sides of the spacing adjustment slot of the connecting rod.

[0007] As a further improvement of the present invention, a buffer structure is wrapped around the outer side of the railing.

[0008] As a further improvement of the utility model, the buffer structure includes an air bag; the railing is a hollow structure, and a vent hole is provided on its side wall, and the vent hole is connected to the inner cavity of the air bag; one end of the railing is connected to an air pipe provided with an air pump.

[0009] As a further improvement of the present invention, the railings are arranged on the bottom and sides of the frame-type hanger body.

[0010] As a further improvement of the present invention, the fish inlet is trumpet-shaped.

[0011] As a further improvement of the present invention, a lifting ring matching with the lifting hook is connected to the top of the frame-type hanger body.

[0012] Beneficial Effects

[0013] Compared with the prior art, the advantages of the tilapia screening device of the utility model are:

[0014] 1. According to the size of the fish to be filtered out, the gap between adjacent railings can be adjusted through the locking structure, and the tilapia screening device can be placed in the breeding pond to allow the fish to swim into the inner side of the frame-type hanger body from the fish entrance. When the tilapia screening device is lifted from the breeding pond, small fish can fall through the gap between adjacent railings and return to the breeding pond, and fish of the same batch in shape and specification can be quickly screened, so that the value of the fish can be maximized as much as possible when it is sold. Since the gap between adjacent railings can be adjusted, it can be applied to fish of different types and sizes, and has good versatility.

[0015] 2. The railing is adjusted in spacing by sliding with the spacing adjustment groove on the connecting rod, and then the connecting rod is clamped by nuts on both sides to lock the position of the railing. It has a simple structure, is easy to operate, and has a low manufacturing cost.

[0016] 3. By setting a buffer structure on the railing, when the fish reacts violently after being taken out of the water, the buffer structure forms an effective buffer between the fish and the railing, avoiding injury to the fish and increasing the survival rate of the fish after being taken out.

[0017] 4. The buffer structure adopts air bags, which have a simple structure and are convenient for adjusting the degree of expansion. It can assist in fine-tuning the size of the gap between adjacent railings for small fish to pass through.

[0018] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a top view of a partial cross-sectional view of a tilapia screening device;

[0021] Figure 2is a front cross-sectional view of a tilapia screening device;

[0022] Figure 3 for Figure 1 AA view;

[0023] Figure 4 The figure is a schematic diagram of the coordination between the connecting rod and the railing;

[0024] Figure 5 This is a diagram of the airbag not inflated;

[0025] Figure 6 Airbag inflation status diagram. DETAILED DESCRIPTION

[0026] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0027] Example

[0028] The specific implementation of the utility model is as follows Figures 1 to 6 As shown, a tilapia screening device comprises a frame-type hanger body 1 with an opening at the top, and a fish inlet 13 is provided on one side of the frame-type hanger body 1. The frame-type hanger body 1 comprises a plurality of connecting rods 12. The tilapia screening device further comprises a plurality of railings 2 arranged perpendicularly to the connecting rods 12 and movably connected, and gaps 4 for small fish to pass through are formed between adjacent railings 2, and the railings 2 and the connecting rods 12 are connected by a locking structure. In this embodiment, the railings 2 are arranged on the bottom and left and right sides of the frame-type hanger body 1.

[0029] The fish inlet 13 is horn-shaped. In this embodiment, the railing 2 is not provided at the fish inlet 13. The gap between the connecting rods at the fish inlet 13 is set to the minimum, and the gap does not need to be adjusted.

[0030] The connecting rod 12 is provided with a spacing adjustment slot 121, and the handrail 2 passes through the spacing adjustment slot 121 and the two slide together. The locking structure includes a nut 5 threadedly connected to the outside of the handrail 2, and the nut 5 is located on both sides of the spacing adjustment slot 121 of the connecting rod 12.

[0031] The outer side of the railing 2 is wrapped with a buffer structure. In this embodiment, the buffer structure includes an airbag 3. The railing 2 is a hollow structure, and a vent hole 21 is provided on its side wall, and the vent hole 21 is connected to the inner cavity of the airbag 3. One end of the railing 2 is connected to an air pipe 7 provided with an air pump 6. When the air pump 6 inflates the airbag 3, the airbag 3 collides; when the air pump 6 extracts gas from the airbag 3, the airbag 3 shrinks.

[0032] The top of the frame-type hanger body 1 is connected with a plurality of lifting rings 8 which are compatible with the lifting hooks of the crane.

[0033] According to the size of the fish to be filtered out, the gap 4 between the adjacent railings 2 can be adjusted by the locking structure. The tilapia screening device is placed in a breeding pond, and the fish are allowed to swim into the inner side of the frame-type hanger body 1 from the fish inlet 13. When the tilapia screening device is lifted from the breeding pond by a crane, the frame-type hanger body 1 is tilted at a certain angle, and the fish inlet 13 is located at the highest point, which can prevent the fish inside from falling from the fish inlet 13. Small fish fall from the gap 4 between the adjacent railings 2 and return to the breeding pond, and fish bodies of the same batch in shape and specification can be quickly screened, so that the value of the fish can be maximized as much as possible when sold. Since the gap 4 between the adjacent railings 2 is adjustable, it can be applied to fish of different types and sizes, and has good versatility.

[0034] By arranging the airbag 3 on the railing 2, when the fish reacts violently after being taken out of the water, the airbag 3 forms an effective buffer between the fish and the railing 2, thereby preventing the fish from being injured and improving the survival rate of the fish after being taken out.

[0035] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A tilapia screening device, characterized in that: The invention comprises a frame-shaped hanger body (1) with an opening at the top, and a fish entrance (13) is provided on one side of the frame-shaped hanger body (1); the frame-shaped hanger body (1) comprises a plurality of connecting rods (12); and a plurality of handrails (2) arranged vertically and movably connected to the connecting rods (12), wherein gaps (4) for small fish to pass through are formed between adjacent handrails (2), and the handrails (2) and the connecting rods (12) are connected via a locking structure.

2. A tilapia screening device according to claim 1, characterized in that, The connecting rod (12) is provided with a spacing adjustment slot (121), the handrail (2) passes through the spacing adjustment slot (121) and the two are slidably matched; the locking structure comprises a nut (5) threadedly connected to the outside of the handrail (2), and the nut (5) is located on both sides of the spacing adjustment slot (121) of the connecting rod (12).

3. A tilapia screening device according to claim 1 or 2, characterized in that, The outer side of the railing (2) is wrapped with a buffer structure.

4. A tilapia screening device according to claim 3, characterized in that, The buffer structure comprises an air bag (3); the railing (2) is a hollow structure, a vent hole (21) is provided on its side wall, and the vent hole (21) is connected to the inner cavity of the air bag (3); one end of the railing (2) is connected to an air pipe (7) provided with an air pump (6).

5. A tilapia screening device according to claim 1, characterized in that, The railing (2) is arranged on the bottom and side of the frame-type hanger body (1).

6. A tilapia screening device according to claim 1, characterized in that, The fish inlet (13) is in the shape of a trumpet.

7. A tilapia screening device according to claim 1, characterized in that, The top of the frame-type hanger body (1) is connected with a lifting ring (8) adapted to the lifting hook.

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