A layered mesh trawl

Abstract

The invention discloses a layered mesh-type trawl including: belonging to the technical field of trawling equipment, the layered mesh-type trawl of the present invention includes a trawl, and a ring-shaped support ring is arranged in the trawl, and the middle part of the support ring is horizontally connected with a The fixed rod, the two ends of the fixed rod are respectively connected to the inner ring of the support ring, the guide body, the guide body is arranged in the trawl and is located on the back flow side of the fixed rod, the middle part of the back flow surface of the fixed rod is connected to the columnar body, the guide body It is a cone-shaped net cylinder, the conical top of the diversion body is connected to the columnar body through the fourth connecting rope, the conical bottom end of the diversion body is connected to the coaxial first floating ring, and the first floating ring is connected to the connecting mesh sleeve of the cylindrical set, and the connection The two ports of the net cover are connected, one port is connected to the first floating ring and the other port is connected to the second floating ring, and the inner ring surface of the second floating ring is connected with an isolation mesh. The escape channel for juvenile fish is provided inside the tool, which has a preliminary separation effect on fish and shrimp and reduces the time for manual sorting in the later stage.

Description

technical field [0001] The invention belongs to the technical field of trawling net equipment, and in particular relates to a layered net capsule type trawling net. Background technique [0002] my country's marine fishery resources are very rich, and its characteristics also determine the various fishing methods in our country, such as trawling, stretching nets, gillnets and many other operating methods. However, when the net is pulled, the big fish blocks the escape channel of the small fish, and the big fish and the small fish squeeze each other. Even if the trawl net that meets the standard has been used, a certain amount of fish will still be caught. Small fish are caught, causing damage to fishery resources. Therefore, a layered structure is designed in some existing trawl nets, such as figure 1 As shown, the middle part of the existing trawl net is separated by the existing separation layer, so that the effective fish or shrimp in the catch caught by the existing trawl...

AI Technical Summary

Problems solved by technology

[0002] my country's marine fishery resources are very rich, and its characteristics also determine the various fishing methods in our country, such as trawling, stretching nets, gillnets and many other operating methods. However, when the net is pulled, the big fish blocks the escape channel of the small fish, and the big fish and the small fish squeeze each other. Even if the trawl net that meets the standard has been used, a certain amount of fish will still be caught. Small fish are caught, causing damage to fishery resources. Therefore, a layered structure is designed in some existing trawl nets, such as figure 1 As shown, the middle part of the existing trawl net is separated by the existing separation layer, so that the effective fish or shrimp in the catch caught by the existing trawl net can escape to the protected space through the existing separation layer, but this sacrifices the fishing capacity of the trawl net. Temporary storage space for catches, reducing catches

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