DEVICE FOR CLEANING SEWAGE AND OTHER LIQUIDS Russian patent published in 1997 - IPC

FIELD: sewage cleaning appliances. SUBSTANCE: device includes vertical housing of filter and hydraulic cyclone, fixed vertical filter element with scraper fitted on revolving shaft, sediment accumulating unit and inlet and outlet branch pipes. Filter element is made in the form of perforated drum with filtering material. Filter is provided with separator mounted on shaft in center of drum and made in form of two coaxial ferrule brought in communication through overflow slots. Scraper secured to outer ferrule is made in the form of pipes located diametrically and provided with longitudinal slots; scraper may be made from half-pipe. Straight-flow hydraulic cyclone is mounted in separator coaxially to it and is connected with filter cover. Lower portion of inner pipe of hydraulic cyclone is perforated. Filter housing and filler element are connected with sediment accumulating unit made in the form of hopper. Pipes with longitudinal slots or half-pipes are additionally provided with controllers of working layer on filtering surface which include cutting device in head portion in way of rotation of scraper and smoothing device in tail portion. EFFECT: enhanced efficiency. 2 cl, 1 dwg