種苗幼魚の噴水ロール式大小仕分け機構

概要

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We have developed a mechanism in which water is injected from holes by the turning effort of the roll. The selection efficiency of the mechanism could be varied by controlling the peripheral velocity of the roll, roll interval, and roll inclination angle.Because the surface of a roll is surrounded by a water layer caused by injection water from inside the roll, abrasion of the fish bodys mucous membrane in relation to roll is prevented. When the angle of roll inclination is 10° and the peripheral velocity of rolls is below 3.0m/s, the error of selected body width in case that rolls rotate in the same direction is bigger than in the reverse direction.A system containing eight rolls could select 126, 000 fry per hour.
公益社団法人日本水産学会の論文
1996-09-15