Fry classifying device

Abstract

The invention discloses a fry classifying device. The fry classifying device comprises a plurality of grid units connected through connecting pieces. Each grid unit comprises two guide rails arranged in parallel in a spaced mode, a connecting groove, sliding blocks and a grid bar, wherein the guide rails are hollow cuboids with the two ends open, the connecting groove penetrates through one side faces of the guide rails, the sliding blocks are arranged in hollow cavity sliding grooves of the guide rails, the sliding blocks are provided with threaded holes corresponding to connecting grooves in position, and the two ends of the grid bar are screwed in the threaded holes through screws to be connected with the upper sliding block and the lower sliding block. According to the fry classifying device, the thicknesses and intervals of the grid bars can be adjusted according to the requirement of the target specification to screen and separate different specifications of fishes within short time, separating time is shortened, and the fish bodies can be prevented from being injured and dead.

Description

technical field [0001] The invention belongs to the field of industrialized fish farming, in particular to a device for separating fish of different specifications. Background technique [0002] Since the 1990s, with the breakthrough and development of economic fish artificial breeding technology, the fish farming industry has developed rapidly, and the intensive factory fish farming model will be the main development direction of fish farming in my country in the future. In factory fish seed cultivation and adult fish farming production, fish with uniform specifications play a key role in improving the survival rate, aquaculture output and aquaculture economic efficiency of factory aquaculture fish. However, in the actual breeding process, objectively there is the phenomenon that the individual size of the cultured fish is uneven, and fishes of different sizes are mixed in the same pond. Because it is difficult for small-sized fish to compete with large-sized fish, so small-...

AI Technical Summary

Problems solved by technology

At present, in the production of fish farming, some grading devices have also been adopted to screen and separate fish of different specifications, but still mainly rely on a large number of manual operations to carry out the separation work, which is not only time-consuming, labor-intensive and labor-intensive, but also makes the fish shoal During a long separation time, it is always in a high-density state, which is likely to cause damage to the fish body surface and even extrusion or hypoxia death

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