Stormproof dual-net wall close type net cage

Abstract

The invention provides a stormproof dual-net wall close type net cage, and belongs to the field of aquaculture net cages. The stormproof dual-net wall close type net cage comprises a net cage frame, an aquaculture net is hung on the net cage frame, and the net cage frame is uniformly connected with connecting arms, an outer layer aquaculture net and an inner layer aquaculture net are suspended on the connecting arms, and the inner layer aquaculture net is sleeved in the external layer aquaculture net; water supply equipment is arranged on the net cage frame, a lift pump is arranged on the water supply equipment, and a water pumping pipe of the lift pump extends into the seawater out of the net cage; a water outlet of the lift pump is connected with a water inlet pipe, the water inlet pipe extends into the net cage; the water outlet is arranged on the water inlet pipe, and the water outlet and the net cage frame tangent line at a corresponding position thereof present an angle at 30 degree; the bottom of each of the outer layer aquaculture net and the inner layer aquaculture net is connected with a dirt collecting device, thereby effectively avoiding the conditions that the fish in the net cage is injured due to larger storm and the net cage is damaged in the large storm, and the water body exchange capacity is strong.

Description

technical field [0001] The invention provides an airtight net cage with anti-wind and wave double net walls, which belongs to the field of breeding net cages. Background technique [0002] It is used in the field of aquaculture, especially suitable for sea cage culture, or cage culture in large water bodies, such as reservoirs and lakes. It can be used to breed swimming fish with high economic value, such as Atlantic salmon, sea bream, grouper, grouper, rainbow trout and other species. [0003] Sea cage culture is booming this year, and many national and provincial projects have vigorously promoted the development of sea cage culture, especially offshore cage culture, that is, to develop far from the shore, the water area is open, the water depth is deep, and the water body exchange Sufficient water area for cage culture of fish. Compared with nearshore waters, this type of water has stable water quality, large water capacity, and sufficient water exchange. It is not easy ...

AI Technical Summary

Problems solved by technology

When in a reservoir or lake environment, there is no large wind and waves, the water body fluctuates little, and the water body exchange capacity is poor. If a large cage is placed in such an environment, the active exchange capacity between the water body in the cage and the outside water body is poor. The respiration of a large number of farmed fish can easily cause low dissolved oxygen in the water body in the cage, resulting in hypoxia in the water body

At the same time, after feeding feed to farmed fish, residual bait and feces are easy to accumulate in the bottom of the water body under the net, resulting in eutrophication of the bottom, thus affecting the overall water environment

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