COOLING WATER PRELIMINARY CLEANING FILTER Russian patent published in 1994 - IPC

FIELD: heat-exchange equipment. SUBSTANCE: filter has housing 1 with supply, discharge and washing branch pipes 2, 3 and 4, perforated filtering member mounted for rotation about its axis and divided by radially extending walls 8 into sections with inlet openings 14, which are communicated with supply branch pipe 4. Transverse wall 15 closes inlet opening of one section. Cylindrical ring 10 is divided by radially extending walls 8 into parts with radial openings, that are provided with gates 18. Gates are mounted for pivoting about axes parallel to axis of filtering member and spaced from gate center of gravity in the direction of rotation. Gates are provided with rigid and resilient retainers. Washing branch pipe is positioned at the level of radially extending openings, which is equal to height of filtering member. EFFECT: increased efficiency of filter and enhanced reliability in operation. 6 dwg