FILTER FOR PURIFYING LIQUIDS Russian patent published in 1995 - IPC

FIELD: separation of materials. SUBSTANCE: filter comprises a housing separated with a net convex baffle into filtering chamber filled with grain charge and chamber for collecting filtrate. A device for creating closed-loop flow of mixture of the grain charge and washing water at regeneration is provided at the top part. The system consists of a pump sucking branch pipes of which are positioned at the top part of the housing. The delivery branch pipe is perforated, provided with a ring chamber, and its outlet opening faces the top of the baffle. EFFECT: enhanced quality of purifying. 4 cl, 6 dwg