WATER INTAKE FISH PROTECTING FILTER Russian patent published in 2003 - IPC

FIELD: water intakes. SUBSTANCE: proposed filter contains three gauze filtering truncated cones coaxially fitted one into the other, each following cone pointed in opposite direction relative to preceding cone, all cones being rigidly interconnected. Three groups of hydrodynamic planes serve to wash gauzes of cones. Said planes are rigidly interconnected and orientated along generatrices of corresponding three virtual cones arranged for independent rotation relative to gauze cones. Spokes of profile similar to that of ship propeller are used to rotate cones. Gauzes of cones are washed by hydrodynamic head of water created at surfaces of gauzes when hydrodynamic planes move relative to gauzes. EFFECT: reduced overall dimensions and metal usage of filter, improved fish protective properties. 2 cl, 2 dwg