| 摘要 |
An abrasive cleaning apparatus (22) comprising a housing (52) defining a closed chamber (56) with a pair of rotating impellers (66) therein. Abrasive cleaning material is directed into the chamber where blades of the impellers contact the material and throw the material through an open front (58) of the chamber against the surface to be cleaned. The waste material removed from the surface being cleaned is drawn through an outlet port (136) to a cyclone separating chamber (112) where the material is separated and directed back to the operating chamber, and the waste material is delivered to a waste location. |
