Larimichthys crocea fry grading device

Abstract

The invention relates to the technical field of aquaculture, in particular to a larimichthys crocea fry grading device. The device comprises a grading box, a fourth mounting groove is formed at the position, located at the right side of a third mounting groove, of the grading box in the length direction, and a first grading frame is mounted in the grading box through a first mounting groove; a second grading frame is mounted in the grading box through a second mounting groove, a third grading frame is mounted in the grading box through the third mounting groove, and a fourth grading frame is mounted in the grading box through the fourth mounting groove; extracting handles are arranged in the middles of the upper sides of the first grading frame, the second grading frame, the third grading frame and the fourth grading frame, outlet boxes are evenly arranged on the right side face of the grading box in the width direction, and grading nets are installed in the first grading frame, the second grading frame, the third grading frame and the fourth grading frame; and according to the grading box, the multiple grading frames are adopted for grading and screening the larimichthys crocea fries, so that the efficiency of grading and screening of the larimichthys crocea fries is high, and the practicability is high.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a large yellow croaker seed grading device. Background technique [0002] Large yellow croaker is a warm-temperate group migratory fish, inhabiting the middle and lower layers of the offshore waters within a water depth of 60m. Hate glare, like turbidity. Mostly float up at dawn, dusk or spring tide; sink during daytime or neap tide. During reproduction, fish schools migrate from the wintering area in the open sea to the offshore sea in batches. Large yellow croaker was once one of the most important marine fishes in China. It is mainly distributed along the coast of my country's coastal waters. It starts from the southern part of the Yellow Sea in the north, passes through the East China Sea and the Taiwan Strait, and reaches the coast east of the Leizhou Peninsula in the South China Sea in the south. Therefore, it is called the "national fish" of our country. [0003] T...

AI Technical Summary

Problems solved by technology

[0003] The existing large yellow croaker seed classification adopts manual selection and classification, which has high labor cost, low classification efficiency, and is easy to cause seed loss and unnecessary economic loss. Therefore, a large yellow croaker seed classification device is needed to solve the above problems. out of improvement

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