a catch device for aquatic animals or a similar group of goods output of shrimp or similar objects

摘要

Shrimps or prawns are sorted out from a catch by a revolving cylindrical screen with openings along the inside to pass the shrimps on a belt and to direct larger crabs or flatfish to the discharge end. The openings can be arranged in a spiral and the turns are sepd. from each other by ribs. The drum is made of plastic material but the tops of the ribs are reinforced by stainless steel wire. ADVANTAGE - This saves rapid wear by solids carried along with the catch and requires no heavy and costly screen made of solid stainless steel.