Square platform shape anti-flow net bag used for square-shaped net box

Abstract

The invention relates to a square platform shape anti-flow net bag used for a square-shaped net box, comprising a net cover, a net bottom, a net body and a sinker. The net cover and the net bottom which are respectively used for forming an upper plane and a lower plane of the square platform respectively consist of a square net piece, a bolsh line fixed at the edge of the net piece and a belly line fixed on the net surface of the net piece; the net body comprises four trapezoidal net pieces for forming four side surfaces of the square platform; the net body is provided with a longitudinal side belly line and a horizontal belly line; in addition, the upper edge and the lower edge of the net body are respectively provided with an upper bolsh line and a lower bolsh line for reinforcing; the bolsh line arranged on the net bottom is connected with the lower bolsh line; and the bolsh line arranged on the net cover is connected with the upper bolsh line, thus forming a closed net bag. The square platform shape anti-flow net bag is specially used for a square-shaped cultivating net box, forms a prestress system of the net box and has strong impact resistance.

Description

technical field [0001] The invention relates to a square net bag, in particular to a net bag which can make the square net box work normally when it is impacted by the water flow in the water. Background technique [0002] At present, there are about 1 million net cages along the coast of my country. Most of the net cage cultures are concentrated in nearshore harbor waters and semi-enclosed types due to backward cage facilities, low technological content, simple materials, and poor anti-flow capacity. In bays, resulting in low water exchange rates, stocking densities in many areas exceed environmental loads. Therefore, the upgrading of traditional cages and the transfer of cages from the near shore to the outside become inevitable. With the increase of the distance from the shore, the sea conditions become more complicated, and it is particularly important to better solve the flow resistance of the mesh pockets of the cages. . Only by effectively solving the stacking and wi...

AI Technical Summary

Problems solved by technology

[0003] Compared with deep-water circular cages, the existing traditional square cages are smaller in size and poor in wind and wave resistance, but because of their advantages of easy operation and low management costs, they will also exist for a long time

Due to the structural defects of the traditional square cages, they are generally arranged in the waters of harbors. The water quality in such waters is poor, which is not conducive to the growth of fish.

In addition, the mesh bags used in square net cages are in the shape of cubes or cuboids, which will easily cause the mesh bags to drift and stack when subjected to the impact of wind, waves or water flow, which will scratch the fish.

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