DEVICE FOR REMOVAL OF SURFACE LAYER OF OIL-CONTAINING LIQUIDS Russian patent published in 1999 - IPC

FIELD: water-supply and sewage purification works in chemical, metal working and other industries for purification of process fluids and lubricants-coolants from organic impurities, and for removal of oil products from surfaces of water reservoirs, rivers, seas and oceans. SUBSTANCE: device includes floating oil- gathering means in form of two hollow sealed cylinders mounted on common frame with smooth or wavy side surface and rotating towards each other, and trough located between them and whose walls serve as scrapers. Discharge system is connected with trough. Set of weighting plates is designed for regulation of position of oil-gathering means. Device is provided with two additional rolls with riffled side surface and mounted on common frame parallel to two hollow cylinders on opposite sides, with small adjustable gap between side surfaces of rolls themselves and hollow cylinders; for rotation towards each other (of rolls and cylinders). EFFECT: higher quality of removal of surface layer. 2 dwg