FISH PROTECTION DEVICE OF WATER INTAKE WORKS Russian patent published in 1995 - IPC

FIELD: hydraulic engineering. SUBSTANCE: fish protection device of water intake works provides for water passing through filtering casette 7 of fish protection headwall 1, inner space of framework 6 and further on, to water inlet 2. To recondition capacity of clogged filtering casettes, fish protection headwall 1 is turned round its axis 5. In so doing, ball 8 from one hollow of casette 7 move to opposite hollow. Avalanche-like movement of balls 8, which may cause rupture of continuous filtering medium of casette, is prevented by flexible shell 10. EFFECT: higher efficiency. 2 cl, 7 dwg