DEVICE FOR REMOVING SURFACE LAYER OF OIL-BEARING LIQUIDS Russian patent published in 1998 - IPC

FIELD: machinery and equipment for environment control. SUBSTANCE: this is intended for purification of effluent and lubricating-cooling liquids from organic impurities. Device has oil-collecting unit which is made in the form of hollow drum with scrapers. Oil-collecting unit is located on surface of liquid for possible rotation around own axis. Position of drum on surface of liquid is adjusted by means of movable metal structure which carries selection of weight strips. Scrapers are made in the form of segments and are arranged uniformly over circumference of drum in several rows along drum surface. Oil is removed from drum surface by means of trough having slots located so that drum scrapers can penetrate into slots. Drum is secured to stationary metal structure by means of two tie rods and can be adjusted in height at changing of liquid level. Trough is fastened to stationary metal structure by tie rods which constitute components of pantographic mechanism. Trough-mounting tie rods are connected with drum-mounting tie rods by springs. Application of aforesaid device allows for efficient removal of petroleum products and other impurities from surface of liquid and it requires no additional adjustment in case of wear during operation. EFFECT: higher efficiency. 2 dwg