Culture net cage capable of automatically supplying oxygen and changing water

Abstract

The invention belongs to the technical field of net cage culture, and relates to a culture net cage capable of automatically supplying oxygen and changing water. The device comprises a culture net cage, wherein the culture net cage comprises an upper supporting floating frame and a lower supporting frame, a plurality of bait recovery cylinders are arranged between the upper supporting floating frame and the lower supporting frame, and an anchor is connected to each bait recovery cylinder through a rod; upper pistons are arranged in the bait recovery cylinders; piston rods are coaxially fixed to the upper pistons, the upper ends of the piston rods extend out of the bait recovery cylinders and the end parts are connected with the upper supporting floating frame; an air inlet pipe is arrangedon one of the bait recovery cylinder and air exhaust pipes are arranged on the bait recovery cylinders; one end of the air inlet pipe and one end of the air exhaust pipes both extend into a chamber partitioned by each the upper piston into each the bait recovery cylinder; the other end of the air inlet pipe extends out of the sea surface and an air inlet one-way valve is fixed to the end part; and the other end of each the exhaust pipe extends into the culture net cage and an air exhaust one-way valve is arranged at each the end part. The device has the advantages of realizing automatic oxygen supply and water exchange of the culture net cage.

Description

Technical field [0001] The invention belongs to the technical field of cage culture, and relates to a culture cage with automatic oxygen supply and water change. Background technique [0002] Due to the advantages of low cost, high yield, convenient management and high recovery rate, cage aquaculture has developed rapidly in coastal areas in recent years. [0003] One type of culture cage is mainly composed of a ring-shaped support floating frame, a culture cage and a fixing device. Among them, the ring-shaped support floating frame floats on the sea; the upper end of the culture cage is open, and the edge of the upper end of the culture cage is fixed on the ring float. On the rack, the gravity of the aquaculture cage is used to lower the bottom of the aquaculture cage to a defined depth under the water; the fixing device includes a number of counterweights that settle to the bottom of the sea and a fixed cable connecting the counterweight and the annular support floating frame for...

AI Technical Summary

Problems solved by technology

In the net cage culture process, because the feed adopts that the bait is directly put into the culture net cage, this feeding method puts the bait into the culture net cage in a large amount at one time, and it has the following disadvantages: because the bait is put in at one time, there are a large number of If the bait is not eaten by the fish in the culture cage, it sinks through the culture cage, resulting in a serious waste of bait and a large amount of residual bait deposited on the seabed, affecting the marine geological environment and causing the marine geological environment to show a trend of eutrophication The problem

[0004] In addition, because a large number of fish can be cultured in the cage, the density of the fish is relatively high, and the supply of oxygen in the water is insufficient, and the situation of fish hypoxia is prone to occur, which is not conducive to the growth and development of fish.

At the same time, the fluidity of the water in the breeding cage is poor, and the pollution generated in the breeding cage is not easy to discharge, which will easily lead to serious situations such as diseases in the fish breeding process

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