Crayfish floating grading basket

Abstract

The invention discloses a crayfish floating grading basket. The crayfish floating grading basket comprises a buoyancy basket module which is a square stainless steel frame, wherein a frame body of the stainless steel frame is provided with a sealed cavity; a net basket module which is of a fence structure downwards arranged along the bottom of the stainless steel frame and comprises a surrounding vertical steel pipe set and a bottom steel pipe set, wherein the distance between vertical steel pipes and the distance between bottom steel pipes allow the crayfishes smaller than the preset specification to pass through. According to the crayfish floating grading basket, the crayfishes smaller than the preset specification can autonomously dissociate out of the grading basket in the water, the crayfishes growing in the water body are low in morbidity and high in survival rate, and labor input is greatly reduced.

Description

technical field [0001] The invention relates to the field of crayfish classification. More specifically, the present invention relates to a crayfish floating classification basket. Background technique [0002] The scientific name of crayfish is Procambarus clarkii, commonly known as freshwater crayfish. It is a species of freshwater crayfish and belongs to the family Arthropoda, Crustacea Decapod, Lobsteridae. It is a high-quality food with low fat, low cholesterol and high protein. Crayfish are originally produced in the southern United States and northern Mexico. From the 1980s to the early 1990s, more than a dozen provinces and cities across the country successively used them as breeding objects. [0003] At present, most crayfish are cultured in ponds, ditches, river ditches and other places, and the farming methods are mostly grass farming, bait and feed farming; because crayfish grow fast, and have the characteristics of self-attack and killing , coupled with its su...

AI Technical Summary

Problems solved by technology

[0003] At present, most crayfish are cultured in ponds, ditches, river ditches and other places, and the farming methods are mostly grass farming, bait and feed farming; because crayfish grow fast, and have the characteristics of self-attack and killing , coupled with its super-reproductive ability, the emergence time is inconsistent, so that the size of the cultured crayfish in the same period is different, and the difference is large

At present, most of the crayfish are caught using ground cage nets. The crayfish caught come up in various sizes and specifications. Then, through manual secondary screening on the shore, the small-sized ones are selected, and then put back into the water body to continue breeding, leaving for a long time. The small-sized crayfish returned to the water body after returning to the water body due to factors such as stress, shelling, and weak constitution, some of the crayfish returned to the water body can no longer survive, and the frequent fishing damage is greater, causing greater losses, and Secondary screening increases manual workload

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