Lobster-catching crab-releasing device

Abstract

The invention relates to a lobster-catching crab-releasing device which is composed of an annular structure (1) and a thin plate (2). The outer periphery of the annular structure (1) is provided with grooves (3), the top of the annular structure (1) is provided with a through hole (4), the annular structure (1) is provided with clamping grooves (6), the thin plate (2) is provided with clamping hooks (5), and the clamping grooves (6) and the clamping hooks (5) are clamped correspondingly. The clamping grooves (6) are evenly distributed on the outer edge of the bottom of the annular structure (1), the thin plate (2) is in a crescent shape, and the clamping hooks (5) are evenly distributed at an inner arc end of the thin plate (2). The lobster-catching crab-releasing device is connected to the tail of a ground cage, lobsters and crabs can be separated conveniently and rapidly, the lobsters remain in the ground cage while the crabs climb out of the ground cage, and accordingly the goal of catching the lobsters and releasing the crabs is achieved.

Description

[0001] Field [0002] The invention relates to a device for catching shrimps and releasing crabs, in particular to a device for separately catching shrimps and crabs in a pond. Background technique [0003] Nowadays, there are many crabs, and there are generally no crayfish in the crab breeding ponds, but the crayfish's reproductive ability is relatively strong, so it is necessary to constantly catch the crayfish. Now there is still a mixed farming model of shrimp and crabs. Because the harvesting periods of shrimps and crabs are not synchronized, it is also necessary to catch shrimps and crabs separately. At present, there is no special tool for catching lobsters. The existing catching tools are commonly used in ground cages, but the ground cages are used for catching shrimps, crabs and fish. If the crabs are kept in the ground cage for too long or with many lobsters It will be hurt, especially the soft-shell crabs that have just moulted, which often cause a lot of losses du...

AI Technical Summary

Problems solved by technology

[0005] At present, there is a method in the industry that utilizes the different crawling modes of shrimp and crabs to sew a piece of plastic skin on the lower half of the cage mouth to achieve the purpose of catching shrimp and releasing crabs. In reality, some farmers are using a similar method. Currently, there are The method of using a plastic plate to sew the cage tail is a little better for a framed cage tail, but it is too inconvenient for a frameless cage tail, because the plastic plate has to be removed when the cage tail needs to be closed. Lose

In actual operation, there are many inconveniences due to the disassembly of the plastic skin

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