Floating net cage for shellfish breeding water replacement

Abstract

The invention provides a floating net cage for shellfish breeding water replacement. The floating net cage comprises an inner ring and an outer ring, wherein the inner ring comprises an upper inner ring and a lower inner ring which is fixedly connected with the upper inner ring through first connecting rods, the upper inner ring is parallel to the lower inner ring, and the first connecting rods are connected with the upper inner ring and the lower inner ring in perpendicular to the upper inner ring and the lower inner ring; the outer ring comprises an upper outer ring and a lower outer ring which is fixedly connected with the upper outer ring through second connecting rods, the upper outer ring is parallel to the lower outer ring, and the second connecting rods are connected with the upper outer ring and the lower outer ring in perpendicular to the upper outer ring and the lower outer ring; the inner ring is fixedly connected inside the outer ring, the inner ring and the outer ring form a concentric circle, a net cage frame is formed by the outer ring, the inner ring, the first connecting rods and the second connecting rods, and a fixing ring fixing a water replacement pipe is arranged inside the net cage frame and located between the outer ring and the inner ring; a plurality of buoys are tied to the upper portion of the net cage frame, supporting feet are arranged at the bottom of the net cage frame, and bolting cloth is tied inside the inner ring of the net cage frame. The floating net cage overcomes the defects of troublesome operation and large workloads, and meanwhile does not damage or omit shellfish fries.

Description

technical field [0001] The invention relates to a net cage used in the production of aquatic seedlings, in particular to a floating net cage suitable for shellfish seedlings for water exchange. Background technique [0002] In the prior art, in the production process of shellfish seedlings such as scallops, cockles, oysters, etc., for the normal growth and development of larvae, it is necessary to change the water 3-4 times a day, and most of the water changes use filter drums, fixed cages, etc. Water, the operation is troublesome and the workload is heavy, and the screen of the filter drum is easy to cause the larvae to absorb due to the small water filtration area. Abrasive net cages cause seedling leakage and running seedlings. Now in the case of labor shortage, there is an urgent need for a water-changing floating cage that is simple to operate and can reduce the number of laborers without harming larvae or seedling leakage. Contents of the invention [0003] The inve...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a floating cage for shellfish seedlings to change water, which solves the defects of troublesome operation and heavy workload, and at the same time does not harm seedlings and seedling leakage

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