DEVICE FOR PURIFICATION OF SEWAGE AND OTHER LIQUIDS Russian patent published in 1996 - IPC

FIELD: purification and clarification of sewage and other liquids from suspended particles. SUBSTANCE: device has cylindrical conical hydrocyclone with cover, tangential supply branch pipe and axial sludge and drain branch pipes, drain chamber with filter element and scraper; drain branch pipe of hydrocyclone is bent in its construction and is connected in series with distributor and drain chamber made in form of hollow fixed vertical perforated drum with filtering material which is mounted coaxially relative to distributor and in parallel with hydrocyclone arranged in housing of filtrate chamber and is provided with central shaft with drive and cross-member on which scrapers are diametrically fitted; scrapers are made in form of pipes with longitudinal slots or in form of half-pipes. Conical portion of hydrocyclone and lower portion of drain chamber are connected in parallel with sediment accumulating and dewatering bin. Provision is also made for controllers of working layer on filtering surface which are mounted on slotted pipes or on half-pipes. EFFECT: enhanced reliability. 2 cl, 1 dwg