A fast lifting cage

Abstract

The invention provides a rapidly lifting net cage, which belongs to the technical field of net cages. The present invention comprises net cage body and several lifting devices, and several lifting devices are arranged on the net cage body, and lifting device comprises first piston cylinder, first piston, second piston cylinder, piston rod, driving mechanism, water inlet and outlet mechanism and Inlet and exhaust mechanism, the first piston cylinder is fixed on the cage body, the first piston is slidably arranged in the first piston cylinder, the second piston cylinder is fixed below the first piston cylinder, and the piston rod is slidably arranged in the second The upper end of the piston cylinder and the lower end of the piston rod are fixed with a second piston, the upper end of the piston rod is fixedly connected with the first piston, and the second piston divides the interior of the second piston cylinder into an upper chamber and a lower chamber, and the driving mechanism can push the first The piston slides up and down, the water inlet and outlet mechanism can control the water inlet and outlet of the water storage chamber, and the inlet and exhaust mechanism can control the inlet and outlet of the upper chamber and the lower chamber. The invention can quickly raise and lower the net cage according to the sea conditions, and improves the ability of resisting wind and waves.

Description

technical field [0001] The invention belongs to the technical field of net cages, and relates to a rapidly lifting net cage. Background technique [0002] Cage culture is an intensive aquaculture technique that is widely used for fish farming using cages. [0003] Cage aquaculture is booming, and many national and provincial projects are vigorously promoting the development of marine cage aquaculture. Breeding in the open sea, the water quality is stable, the water body has a large capacity, and the water body exchange is fast. The residual feed and feces are not easy to accumulate at the bottom of the cage, which can avoid water pollution. However, the open sea area lacks shelter and the current is strong. For example, the characteristic flow velocity in the open sea area of ​​the East China Sea can reach more than 1.0 m / s, and some areas can reach 1.5 m / s. The domestic mainstream deep-water cages are difficult to resist the impact of strong currents, and the volume loss ...

AI Technical Summary

Problems solved by technology

Domestic mainstream deep-water cages are difficult to resist the impact of strong currents, and the volume loss of breeding is serious

On the other hand, it is also difficult for breeding objects to resist the continuous impact of water flow above 1.0 m / s for a long time, which can easily lead to fatigue death

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