A large yellow croaker releasing device

Abstract

The invention discloses a release device for large yellow croaker, and aims to provide a release device for large yellow croaker with low labor intensity, high release efficiency, which can effectively improve the survival rate of large yellow croaker seedlings, and has a good release effect. It includes a counterweight, a vertical sleeve body, a connecting shaft, a placement cylinder slidably arranged in the vertical sleeve body, a vertical guide rod arranged on the hull and a lifting slide seat that can slide up and down along the vertical guide rod; The straight sleeve body is fixedly arranged on the outer side of the ship, the upper and lower ends of the vertical sleeve body are opened, and limit stops are provided on the inner side of the vertical sleeve body; the upper and lower ends of the placement cylinder are open; An outer annular limit block is arranged above the limit block, and an inner annular limit block is provided on the lower part of the inner side of the placement cylinder. A partition is arranged in the placement cylinder and below the inner annular limit block, and the partition can be placed along the placement cylinder. Move down, and pass through the lower end opening of the placement cylinder, the partition plate is provided with a number of water inlet through holes running through the upper and lower surfaces of the partition plate.

Description

technical field [0001] The invention relates to a releasing device, in particular to a large yellow croaker releasing device. Background technique [0002] Large yellow croaker marine proliferation and release refers to a fishery method in which large yellow croakers are released into natural ocean waters where large yellow croaker resources have declined after artificial breeding and seedlings, so that the natural population of large yellow croakers can be restored, and then fishery methods are carried out rationally. [0003] At present, the common method of releasing large yellow croakers is to put the seedlings in a special live water transport ship, and transport them to the release sea area; then use a net bag to transfer the seedlings to a bucket with water, and then dump the bucket into the sea middle. The current method of releasing large yellow croakers requires a lot of manpower, which is labor-intensive and has low efficiency; and because there is a certain heig...

AI Technical Summary

Problems solved by technology

The current method of releasing large yellow croakers requires a lot of manpower, which is labor-intensive and has low efficiency; and because there is a certain height difference between the live water tank of the transport ship and the sea level, the fry are thrown from the air into the sea during release, which may also cause the fry to fall. Injury, leading to the decline in the vitality of the released seedlings or even death, seriously affecting the release effect

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