Aeration flow-producing device applied in cultivation of fish with rheotaxis

Abstract

The invention relates to an aeration flow-producing device applied in the cultivation of fish with rheotaxis. The device is composed of a blower, PVC flow-producing pipes, air pipes, an equal tee, reducer tees, bent pipes, and the like. The blower is directly connected with a main air pipe. The main air pipe is connected with branch air pipes through the equal tee; the branch air pipes are connected with the PVC flow-producing pipes through the reducer tees provided with valves. The aeration volume can be adjusted through the valves. The PVC flow-producing pipes mainly include PVC aeration pipes perforated on single sides and a PVC aeration pipe perforated on different directions on two ends. The flow-producing pipes are connected through elbows. The device provided by the invention has the characteristics of low construction cost, low operation energy consumption, low operation cost, convenient operation, low failure rate, and the like. Airflow is produced by the blower, and enters cultivation pond water through the air pipes and the PVC flow-producing devices. The airflow pushes water, and artificial water flow with controllable flow velocity and flow pattern is formed in the cultivation pond. Also, dissolved oxygen in water can be effectively increased. Therefore, the growth requirements of fish with rheotaxis can be satisfied.

Description

technical field [0001] The invention belongs to the field of facility fishery, and in particular relates to an oxygen-increasing flow-generating device that can be used for the cultivation of current-tending fish. Background technique [0002] The current tendency of fish refers to the behavioral response characteristics of fish to the flow velocity and flow direction in running water. Most of the fish living in the flowing water environment have flow tendency behavior, and they can adjust their swimming direction and flow direction at any time according to the flow direction and flow velocity. Swimming speed, keeping oneself swimming against the current or staying in a specific position for a long time. Flow tendency is a very important living habit of many migratory fish and rocky fish. Generally, migratory fish and river rapids fish have strong flow tendency, such as Chinese sturgeon, sardine, mackerel, tuna, Salmon, trout, roundmouth copperfish, Sichuan white snapper an...

AI Technical Summary

Problems solved by technology

However, in the domestication process of many rare and unique fishes, it was found that most wild fishes had a series of problems such as poor environmental adaptability, difficult domestication, and gonadal retardation under artificial breeding conditions. , one of the very important factors is that the water flow conditions in the artificial breeding environment have changed compared with the wild environment, and there is a lack of appropriate water stimulation.

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