METHOD OF DEVICE FOR CONTROLLING MODE OF REFUSE AND FISH REMOVAL Russian patent published in 1994 - IPC

FIELD: fish protection devices. SUBSTANCE: refuse and young fishes presenting in water flow, climb into top layers of the flow due to flare of air-bubble curtain created by perforated pipe-line which is connected with compressor. Then they enter refuse and fish removing tray made of resilient canvas, after that they enter refuse and fish removing channel. When changing speed of transition flow the boundary of flare of air-bubble curtain is determined in the transit of lower edge of refuse-fish removing tray. After that lower edge of the tray is put deeper under the lower boundary of flare of air-bubble curtain. EFFECT: improved efficiency. 2 cl, 5 dwg