Air supplement device used for settleable fish-culturing net cage

Abstract

The invention provides an air supplement device used for a settleable fish-culturing net cage. The air supplement device comprises an air supplement cover located in the interior of a settleable net cage, an air supplement pipe, an air supplement hose, a bait feeding pipe and a bait feeding hose, wherein the air supplement cover is of an umbrella shape or a bell shape; the lower end of the air supplement pipe is positioned in the interior of the air supplement cover; the upper end of the air supplement pipe is connected with the lower end of the air supplement hose; the upper end of the air supplement hose is connected with an inflation pump arranged on a working platform on water surface; air supplied by the inflation pump is filled into the air supplement cover through the air supplementhose and the air supplement pipe; the lower end of the bait feeding pipe is connected with the upper part of the air supplement cover; the upper end of the bait feeding pipe is connected with the bait feeding hose; the upper end of the bait feeding hose is located above the water surface; the lower end of the bait feeding hose is connected with the bait feeding pipe; and sinkable feed particles added from the upper end of the bait feeding hose pass through the bait feeding hose, successively enter the bait feeding pipe and the air supplement cover, and fall into water located below the air supplement cover. The air supplement device provided by the invention can supplement lost air in a swim bladder for certain fish needing direction suction of air during long-term sink-cage culturing; and in order to tame cultured fish to contact air in the air supplement cover, the bait feeding pipe can be used to add the sinkable feed particles into the air supplement cover.

Description

technical field [0001] The invention belongs to the field of aquaculture and marine resource development, and relates to an air replenishing device for submerging net cages underwater for fish culture. Background technique [0002] The negative effects of near-shore cage fish farming on the environment have aroused widespread concern. The development of marine fish farming from near-shore cages to offshore (deep sea) cages has become an inevitable choice for the sustainable development of mariculture. In order to utilize the cold water resources in the lower part of the ocean in summer, avoid harmful organisms of cultured fish or avoid harsh hydrological conditions, people often need to submerge fish cages in a certain water layer under the water in stages. However, sinking the cages underwater for a long time will affect the normal life and growth of some fishes. [0003] People's research on Atlantic salmon found that after the fish has been living underwater for about 20...

AI Technical Summary

Problems solved by technology

However, sinking the cages underwater for a long time will affect the normal life and growth of some fish

[0003] People's research on Atlantic salmon found that after the fish has been living underwater for about 20 days, the gas in the swim bladder will partially overflow and cannot be replenished, the buoyancy of the fish body will be affected, the swimming speed of the fish will increase, and the growth rate will slow down. slow

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