Fry breeding net cage

Abstract

The invention discloses a net cage for fish fry cultivation, which comprises a net cage frame, buoys are evenly distributed on the outer peripheral surface of the net cage frame, criss-cross sub-grids are arranged inside the net cage frame, and the net cage frame includes steel pipes, steel pipes and net cage frames. The set water pump is connected, and there are multiple jet pipes distributed on the steel pipe, and buoys are evenly distributed on the outer peripheral surface of the cage frame, so that the cage can be suspended in the water for fry breeding. There are criss-cross sub-grids inside the cage frame, It can realize the breeding of fry in the net cage according to different specifications, and the steel pipe is connected with the water pump set in the cage frame. There are multiple jet pipes distributed on the steel pipe, so that the water pump can pump out the water in the net cage through the spray nozzles distributed on the steel pipe. The flow pipe is sprayed into the net cage again. During this process, the water outside the net cage can increase the flow rate of the water into the net cage in a short time, promote the material exchange between the various water layers in the net cage, and make the nutrients in the net cage distributed. Balanced, reduce the fish fry breeding cycle, improve the survival rate of fish fry breeding.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a net cage for fish fry cultivation. Background technique [0002] Our country is rich in marine resources. With the development of economy and the continuous improvement of people's living standards, the demand for marine aquatic resources continues to increase. As a healthy food, fresh aquatic products have become the first choice for large, medium and small cities, restaurants and the general public. One of the varieties. However, due to overfishing after the 1970s and 1980s, fish resources were seriously damaged, and with the continuous development of industrialization, offshore pollution further increased the decline of natural fish resources. Therefore, it is impossible to meet the market demand for seafood by relying on natural fishing methods alone, nor can it guarantee the sustainable development of marine fisheries. [0003] In order to solve the above...

AI Technical Summary

Problems solved by technology

The ability of existing cage culture to resist wind and waves is relatively poor, and the ability to resist typhoon is relatively poor; meanwhile, the cages are generally square and connected together, causing the water flow in the cage to be not smooth, the external seawater is difficult to enter the inside of the cage, and the outside of the cage is lacking. To protect the frame, the stability of the cage is not high; in addition, the artificial dependence of the existing cage culture is relatively large

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