Aquaculture net cage

Abstract

The invention belongs to the technical field of net cage aquaculture and relates to an aquaculture net cage. The aquaculture net cage comprises an upper supporting floating frame and a lower supporting frame fixed to a seabed, and a plurality of cylindrical outer shells are arranged between the upper supporting floating frame and the lower supporting frame and internally provided with telescopic parts capable of sliding up and down. Upper ends of the telescopic parts extend out of tops of the cylindrical outer shells to be hinged to the upper supporting floating frame while lower ends are slidably arranged in the cylindrical outer shells. A bait recovery net is arranged at the bottom of the aquaculture net cage and connected to the cylindrical outer shells through rods, and one end of eachrod penetrates a corresponding through groove in the corresponding cylindrical outer shell to be fixedly connected to a transmission mechanism below the corresponding telescopic part while the otherend is hinged to a cage body in the aquaculture net cage. The telescopic parts which slide up and down drive a bait collection mechanism to perform synchronous reverse motion through the transmissionmechanisms. The aquaculture net cage has the advantage that bait at the bottom of the aquaculture net cage can be collected and reused.

Description

technical field [0001] The invention belongs to the technical field of net cage culture, and relates to a culture net cage. Background technique [0002] Due to the advantages of low cost, high yield, convenient management and high return rate of cage culture, cage culture has developed rapidly in coastal areas in recent years. [0003] There is a kind of culture net cage mainly made up of ring support floating frame, culture net cage and fixing device, wherein, ring support floating frame floats on the sea surface; On the frame, use the gravity of the culture cage to lower the bottom of the culture cage to a limited depth underwater; the fixing device includes a number of counterweights that sink to the seabed and a fixed cable connecting the counterweight and the ring-supporting floating frame for fixing Ring support floating frame. 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 t...

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

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