FILTER FOR CLEANING LIQUIDS Russian patent published in 2004 - IPC

FIELD: mechanical or ion-exchange cleaning of liquids. SUBSTANCE: proposed filter has housing with bottom and at least one intermediate bottom where grainy medium is placed; filter is also provided with holes where draining elements are located with upper perforated part and lower part connected with branch pipes. Upper part of draining elements is made in form of truncated cone; recess made under each hole in intermediate bottom has form of corresponding to form of draining element. EFFECT: minimizing of "dead zones" between draining elements and surface of intermediate bottom; avoidance of damage of grainy medium during loosening, washing and regeneration. 3 cl, 3 dwg