DRUM-TYPE VACUUM FILTER Russian patent published in 1997 - IPC

FIELD: cleaning lubricants-and- coolants through filtration. SUBSTANCE: filter is provided with reservoir for suspension on its outside, one or more perforated drums with vertical or horizontal axle made in the form of hollow shaft with slots. Perforated pipe line connected with ejector outlet is mounted under drum. One inlet of ejector is connected with compressed air supply system and other inlet is connected with lubricant-and- coolant system. Device for removal of sludge is made in the form of mechanical or hydraulic knife. EFFECT: enhanced efficiency. 5 cl, 5 dwg