Method for processing and suspending maritime anti-fouling test hanging net of metal stretched net

Abstract

The invention discloses a method for processing and suspending a maritime anti-fouling test hanging net of a metal stretched net, relating to hanging nets used in piscatorial engineering anti-fouling tests. According to the method disclosed by the invention, a PPR (PolyPropylene Random) pipe and the metal stretched net are adopted, and the method is characterized by comprising the steps of: processing the PPR pipe into a quadrate frame; cutting the metal stretched net into a quadrate, and bending the end parts of the net meshes and the cut mesh sides within a 0.02 m-width region at the periphery of the quadrate metal stretched net; binding a high-intensity fishing three-strand polyethylene rope edge steel at the periphery of the quadrate metal stretched net; assembly the metal stretched net provided with the edge steel onto the quadrate frame by a high-intensity polyamide woven strip; fixing a sinking block on a lower edge frame of the quadrate frame by utilizing a rope; and suspending each hanging net for test on a net box floating pipe by using two four-strand high-intensity fishing polyethylene ropes with the same length.

Description

technical field [0001] The invention relates to a hanging net for antifouling test of a metal stretched net in the field of fishery engineering. Background technique [0002] Marine fouling organisms, also known as marine fouling organisms, are animals, plants and microorganisms that grow on the surface of marine facilities. In the cage culture sea area, the water flow is smooth and the bait is sufficient. The larvae and spores of fouling organisms float and swim to the cage facilities and then attach and settle down, resulting in a large number of marine fouling organisms attached to the synthetic fiber fishing nets used in the cages. For this reason, people use antifouling coatings for nets to carry out antifouling treatment on synthetic fiber fishing nets in cages. The releasable antifouling agent in the antifouling coatings for nets forms a protective layer around the net materials to prevent or reduce marine pollution. The attachment and fouling of the synthetic fiber ...

AI Technical Summary

Problems solved by technology

A large number of production practices have shown that (1) due to the thin thickness of the metal stretched net used in fishery engineering, it is easy to curl a piece of metal stretched net directly suspended on the cage frame, making the antifouling effect of the hanging net net clothing relatively incomparable ; (2) The iron frame will be severely corroded after being affected by comprehensive factors such as seawater, sunlight and high temperature; at the same time, because the metal stretched net and the iron frame are not the same metal, they will be damaged by the potential difference in the process of hanging the net. Severe corrosion occurs, which will further affect the evaluation of the antifouling effect of the metal stretched net; (3) the hanging net processing and hanging materials used in the prior art metal stretched net antifouling test adopt common materials, and the energy consumption of the hanging net test is relatively high. Large, the strength of the three-strand rope used for hanging the net is small, and the rope is easily broken, which causes the frequent loss of the hanging net for the test, which not only increases the consumption of raw materials, but also directly leads to the failure of the test or delays the best test time; the three-strand rope used for hanging the net hangs in the ocean. The rotatability in the cage is large, which affects the stability of the hanging net, and also causes the adjacent hanging nets to be entangled with each other; the hanging nets for the test are hung on the frame of the cage at any height and spacing, which makes the hanging nets located in the sea of ​​marine fouling organisms. Different water layers with different distributions make the antifouling effect of the hanging net clothing relatively incomparable; due to the randomness of the hanging net processing and the hanging method, the lack of science and safety directly affects the antifouling effect of the metal stretch net. unbiased assessment of pollution effects

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