Near-ship-end Antarctic krill continuous pumping fishing system

Abstract

The invention provides a near-ship-end Antarctic krill continuous pumping fishing system, which comprises a krill net, a net bag, a hose, a shrimp sucking pump, a dragging steel wire, a backwashing system, a first sensor and a second sensor. The net opening of the krill net is connected with a trawl steel wire; the net bag is arranged at the tail end of the krill net; the inlet end of the shrimp sucking pump is connected with the net bag through a hard hose, and the outlet end of the shrimp sucking pump is connected with a hose connecting device through the hose; the shrimp sucking pump is provided with a quick connector for connecting with a hydraulic hose; the dragging steel wire is connected with the shrimp sucking pump; the backwashing system comprises a pipeline, a backwashing pump arranged on the pipeline, a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, one end of the pipeline is connected with a ship seawater tank, and the other end of the pipeline is connected with a soft hose; the first sensor is arranged on the net bag, and the second sensor is arranged at the net opening of the krill net. The near-ship-end Antarctic krillcontinuous pumping fishing system is of simple structure and convenient use, reduces the amount of labor of the crew and the using frequency of the fishing equipment, improves the fishing capacity andthe fishing efficiency by continuous pumping, and also improves the quality of the krill.

Description

technical field [0001] The invention relates to a marine krill fishing system, in particular to a continuous pump suction fishing system for Antarctic krill near the ship. Background technique [0002] The Antarctic krill division is 18.4 million km in Antarctica 2 In the sea area, the amount of resources reaches 3 billion tons, and the catchable amount reaches 100 million tons. The annual fishing limit is basically maintained at about 900,000 tons, while the actual annual global catch does not exceed 200,000 tons, and China does not exceed 30,000 tons. [0003] The annual catch is mainly limited by fishing methods. At present, there are two main fishing methods for Antarctic krill: traditional broadside truss trawl and traditional net plate trawl. Compared with traditional net plate trawl, side quilted trawl is more efficient. The amount of catch is large, but both fishing methods have disadvantages: [0004] 1. The net needs to be lifted and released frequently, and the ...

AI Technical Summary

Problems solved by technology

[0004] 1. The net needs to be lifted and released frequently, and the operation time of lifting and releasing the net occupies more than half of the entire fishing time, which restricts the effective trawling time and affects the fishing efficiency

[0005] 2. There are many operators, the operation is complicated and the work intensity is high

[0006] 3. Traditional broadside girder trawls are not suitable for deep trawls, and traditional panel trawls are not suitable for surface trawls, resulting in low fishing efficiency

[0007] 4. The traditional side girder trawling needs to be extended outboard from the ship, and the net gear will exert a lateral overturning moment on the ship, which will affect the stability of the ship and bring safety hazards

[0008] 5. Krill is easily crushed, affecting the quality of krill

[0009] 6. The interval between secondary fishing is long, and the krill is stored for a long time, which seriously affects the quality of krill

[0010] 7. The frequent use of deck trawling machinery not only reduces its service life, but also consumes energy, which is neither environmentally friendly nor economical

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