Patinopecten yessoensis beam trawlnet with elastic teeth

Abstract

The invention relates to the technical field of shellfish culture, particularly relates to a net for fishing yessoensis, and discloses a patinopecten yessoensis beam trawlnet with elastic teeth. The patinopecten yessoensis beam trawlnet comprises a net rack and a net body. The net rack consists of a beam plane and net cranks, the beam plane is an irregular square consisting of a net lever and supports, the top of the beam plane is arc-shaped and is provided with a hanging bar, the main net cranks and the auxiliary net cranks are disposed below the beam plane, the elastic teeth are arranged on the supports in a scattered manner, and the length of each elastic tooth is larger than the height of a portion, which is protruded out of the beam plane, of each main net crank by 4-10cm. The net body consists of a net opening chain, an abdominal net and a back net, the net opening chain is fixed on the main net cranks and the auxiliary net cranks, the abdominal net is fixed on the net opening chain, and the back net is fixed on the beam plane of the net rack and connected with the abdominal net. Problems that patinopecten yessoensis is missed, pressed and damaged in a fishing process are greatly reduced, a single-net fishing quantity is increased by about 10% as compared with another fishing tool, and damage rate, casualty rate and sand content of the fished patinopecten yessoensis, oil consumption of the trawlnet and damage degree to a seabed ecological environment are greatly reduced.

Description

technical field [0001] Type the technical field description paragraph here. Background technique [0002] At present, in my country's coastal areas, the aquaculture industry of scallops is developing rapidly, especially the Ezo scallops, which were mainly produced in Japan and Russia, have now become the key aquaculture industries in the Liaodong Peninsula in northern my country, Changdao, Shandong and other sea areas. The bottom-sowing multiplication method of large-scale farming has developed extremely rapidly and has become industrialized. With the cultivation of the industrialized mode of bottom-seeding multiplication of scallops, the quality of fishing technology directly affects the yield of scallops. Fishing nets have become an important tool for scallop cultivation. Whether their structure, material and performance are reasonable or not directly affects It is related to the recapture rate, damage rate, sediment content, fuel consumption rate of trawling nets, and the...

AI Technical Summary

Problems solved by technology

[0003] When fishing with traditional nets, there are problems of shell leakage, crushing and injury. The close contact between the bottom net and the seabed of the nets has caused "crushing and sweeping" damage to the seabed ecological environment. Fishing causes sediment and other impurities to enter the net, which makes the scallops have a large sediment content and subsequent treatment is very difficult; at the same time, as the weight of scallops in the nets continues to increase during fishing, the friction between the bottom net and the seabed Very large, resulting in high resistance to trawl nets, low harvesting efficiency, and energy waste of fishing vessels

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