A net cage allowing fishes to enter and preventing fishes to leave

Abstract

The invention provides a net cage allowing fishes to enter and preventing fishes to leave. The left front portion of a frame of the net cage is provided with a rotary automatic closing door (1) and a gate (2); a platform (3) is arranged before the doors; a row of holes are formed in the platform (3); hooks (4) are arranged on the tops of the holes and a trap rod (5) is installed under the holes; a trap (6) is installed on the upper end of an angle support of the trap rod (5); the trap (6) is the switch for the rotary automatic closing door (1); the rotary automatic closing door (1) includes two oppositely connected plates. When bait is not touched by fishes, the door (1) is closed vertically; the right end of a central shaft of the door (1) is provided with a toothed disc (7) to which the trap (6) is clamped; once the bait is touched by fishes, the trap (6) jumps out of a disc tooth and is clamped to another disc tooth; every time the bait is touched by fishes, the disc tooth to which the trap (6) is clamped changes once; the gate (2) is installed on the left front and is closed when there is no movement; the gate is driven by rotating force generated when the door (1) rotates to drive fishes into the cage.

Description

technical field [0001] The present invention is applied to fishing in Haihe River and ponds (catch immediately when caught, stocking and growing if caught improperly). Background technique [0002] At present, fishing relies on all kinds of nets to catch all the fish in one net. Some of them are caught and some of them are kept. Some of them are mature and some are immature. They are all caught together, and this part is also left. Therefore, the mature ones should be caught, and the immature ones caught together are a kind of loss. [0003] Fish ponds are different from seas and rivers. Seas and rivers have large areas, and a little loss cannot be seen, but it can be seen in fish ponds. After a fish pond is caught once, all the fish in the pond are frightened and panicked. It has a great impact on the normal growth of fish. These fishing techniques not only cause losses and affect the normal growth of fish, but also it is not so convenient to eat fish at any time. Therefor...

AI Technical Summary

Problems solved by technology

[0002] At present, fishing relies on all kinds of nets to catch all the fish in one net. Some of them are caught and some of them are kept. Some of them are mature and some are immature. They are all caught together, and this part is also left. The mature ones should be caught, and the immature ones caught together is a kind of loss

[0003] Fish ponds are different from seas and rivers. Seas and rivers have large areas, and a little loss cannot be seen, but it can be seen in fish ponds. After a fish pond is caught once, all the fish in the pond are frightened and panicked. It has a great impact on the normal growth of fish. These fishing techniques not only cause losses and affect the normal growth of fish, but also it is not so convenient to eat fish at any time. Therefore, research and invention of suitable fishing tools are put into fishing in aquaculture It is an urgent need for the public to avoid the above-mentioned insoluble difficulties in order to improve the production efficiency of the aquaculture industry. This equipment has the function of catching mature fish without disturbing other fish in the pond. It does not need fishing craftsmen to mobilize the crowd, and it can be fished at any time. , this technology is people's constant pursuit of life

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