GEAR REMOVING SURFACE LAYER OF OIL-CARRYING FLUIDS Russian patent published in 1999 - IPC

FIELD: sewage purification works, removal of oil products from surfaces of fluids. SUBSTANCE: gear includes oil-collecting aid held on surface by means of mechanism of pantograph type, metal structure carrying set of loading plates, drain system to remove oil products. Oil-collecting aid is manufactured in the form of two hollow sealed oil-collecting cylinders with smooth or wavy surfaces rotating in opposition inside which additional hollow sealed cylinders are mounted coaxially. Scraper in the form of chute is placed between cylinders. Inlet and outlet collectors are used to feed and remove cooling or heating medium into space between internal surfaces of intake cylinders and outer surfaces of sealed cylinders, their pipe-lines are simultaneously employed as rotation axles of oil-collecting cylinders and are rigidly coupled to additional cylinders. EFFECT: improved quality of removal of surface layer of fluids. 4 dwg