Continuous type live fish sorter in vacuum for starting up fishing

Abstract

A vacuum fishing machine for continuously catching and classifying living fish without damage to fish is composed of water circulating suction pump, two negative-pressure fish-collecting tanks with sucking port, electric ball valve, electromagnetic valve for sucking, water level controlling switch and automatic fish discharging port, a rubber pipe for sucking fish, and an automatic control circuit.

Description

technical field [0001] The invention belongs to the technical field of seawater net cage cultivation and fishing, in particular to a continuous vacuum live fish catching and grading machine. Background technique [0002] At present, seawater culture cages tend to be large-scale. A circular cage with a circumference of 50m can raise 10-20 tons of fish. In a large-scale cage farm, the number of cages can reach 20-30. Such a huge The amount of live fish culture, the classification and catch of fish in cage culture, the transportation between nets, nets, cages, ships and shores, long-distance transportation of fish species and live fish, etc. A matched with it is a live fish catching and grading machine that not only has a large catching capacity, is convenient for grading, but does not damage the fish body. [0003] There are three types of fish suction pumps in the world. The first is the high-pressure jet type, which uses high-pressure water to spray out through the nozzle ...

AI Technical Summary

Problems solved by technology

The second type is in the form of a centrifugal water pump. The impeller in the pump rotates at a high speed to generate centrifugal force, which generates negative pressure at the inlet and high pressure at the outlet. The fish water is sucked in at the negative pressure and discharged at the high pressure. bodily injury

However, the pump is intermittent. During the intermittent period of the working process, the empty consumption of the vacuum pump and the energy consumption of the fish water return of the suction pipe account for about 20%-30% of the total energy consumption of suctioning fish, resulting in a large energy waste.

In addition, there are several forms of fish suction pumps and dead fish grading devices in the world at present, but a multi-purpose vacuum live fish catching and grading all-in-one machine has not yet come out.

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