Purse net for open sea deepwater sea area breeding

Abstract

The invention discloses a purse net for open sea deepwater sea area breeding. The purse net comprises a purse net coat which defines a breeding effective water body, a floating rope frame connected to the upper end of the purse net coat and a net dropping part which is connected to the lower end of the purse net coat and falls in sludge, the floating rope frame is connected with at least three main anchor ropes, the other end of each main anchor rope is connected with a main anchor pile, at least three auxiliary anchor piles are evenly distributed in a surrounding mode on the inner side and the outer side of the purse net coat respectively, and the auxiliary anchor piles are connected with the purse net coat through auxiliary anchor ropes. The purse net can be used for a long time effectively in some sea areas where coastal typhoon invasion is frequent, waves are high, flow is fast, and water flow often changes direction all the year round, during a long-time using process, maintaining following cost investment is low, and economic benefit is good.

Description

technical field [0001] The invention relates to an aquaculture facility in the technical field of aquaculture, in particular to a purse seine for deepwater aquaculture in open seas. Background technique [0002] Purse seine farming is a mixed ecological farming model, which can carry out three-dimensional polyculture of fish, shellfish and algae according to the characteristics of the sea area. According to the economic characteristics of the fishery in the production area, fish with important economic value (such as large yellow croaker, red sea bream, black bream, etc.) are selected for stocking, bottom sowing of shellfish and hanging algae are carried out, and selective feed feeding is implemented. Seine farming is also an ecosystem-based aquaculture model. Treat the net enclosure area as a system, regard human breeding activities (stocking of breeding objects, feeding, etc.) Nutrients, dissolved oxygen, etc.) in response to breeding activities, establish an ecological ...

AI Technical Summary

Problems solved by technology

In the structure of the above-mentioned breeding device, because it only sets piles at intervals outside the seine net clothing, when the seine net clothing is subjected to the impact of water flow as a whole, the pile sinking of the above-mentioned layout cannot exert a certain pressure on each area of ​​the seine net clothing. Uniform pulling force, especially the piles outside the side of the seine netting facing away from the water flow direction are basically not stressed, while the piles outside the side of the seine netting facing the direction of water flow are under concentrated force

Therefore, when the above-mentioned aquaculture device is used in some coastal typhoon attacks frequently, the waves are high and the current is fast, and the water flow is changeable all the year round, considering that the overall perimeter of the seine net is relatively large, the water surface area for laying is relatively wide. , the huge impact force generated by the water flow will make the pile sinking unable to effectively control the floating situation of each area of ​​the seine net, which will cause the breeding objects to be easily bruised by the seine net, and if the breeding object is fish, it will also cause fish disease Frequent occurrence, the breeding effect is obviously reduced, and the above-mentioned concentrated piles will loosen due to excessive tension, and even cause a certain displacement in severe cases, so that the overall stability of the seine cannot be guaranteed, increasing the The follow-up maintenance cost of the net will bring serious uneasy economic factors to deep-water aquaculture in the sea

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