Split automatic fish grading machine and fish grading method

Abstract

The invention relates to a split automatic fish grading machine and a fish grading method, and belongs to the technical field of fish size grading equipment. By adopting a vertical structure, grading can be automatically and accurately carried out, and the problems existing in an existing grading machine that the fry damage rate and death rate are high, and a lot of manpower and time are consumed can be reduced. The split automatic fish grading machine comprises grading screen plates, roller type fish discharging screens and fish discharging guiding hoppers, wherein the grading screen plates are located in the fish grading machine and installed in an inclined mode relative to the ground, the grading screen plates are connected end to end from top to bottom, and each grading screen plate comprises a scattering guiding slope on the upper portion and a roller type grading screen on the lower portion. After fry are poured into the fish grading machine, fry with the body thickness larger than the grading roller gap of the roller type grading screens are discharged when passing through the grading screen plates, and fry with a small body thickness are discharged from the grading screen plates on the lower layer until grading is completed. The split automatic fish grading machine is flexible and small in occupied area with the stereoscopic space fully utilized; the split automatic fish grading machine can be used in both narrow culture workshops and outdoor pond culture plants, and is not limited to narrow and small spaces.

Description

technical field [0001] The invention relates to a three-dimensional automatic fish sorting machine and a fish sorting method, belonging to the technical field of fish specification grading equipment. Background technique [0002] In the breeding process, it is necessary to classify the size of the cultured fish to avoid the phenomenon of uneven feeding when fish with different sizes are raised together during the breeding process, and also to avoid the phenomenon of cannibalism, especially in the fry stage and the sub-adult stage , it is very necessary for the sub-standard breeding of the breeding objects, and the manual size grading work in the past requires a lot of manpower and time, and in the process of manual grading, it is very easy to cause damage to the fish body, and reduce the survival of the fish during the grading breeding process At the same time, the accuracy of manual specification grading is poor. Nowadays, automatic fish fry classifiers have appeared, but ...

AI Technical Summary

Problems solved by technology

[0002] In the breeding process, it is necessary to classify the size of the cultured fish to avoid uneven feeding when fish with different sizes are raised together during the breeding process, and also to avoid the phenomenon of cannibalism, especially in the fry stage and the sub-adult stage , it is very necessary for the sub-standard breeding of the breeding objects, and the manual size grading work in the past requires a lot of manpower and time, and in the manual grading process, it is very easy to cause fish body damage, and reduce the survival of fish in the grading breeding process At the same time, the accuracy of manual specification grading is poor

Nowadays, automatic fish fry classifiers have appeared, but they are large in size, especially in the overall size, and the length is too long, so it is difficult to use them in the breeding workshop. It is often necessary to transport the fish fry in the breeding workshop to the size classifier after sorting. breeding ponds, the process often increases the disability and mortality of fry

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