Sand washer is also called stone washing machine. With exact structure, impeller drive bearing device is separated from the water or hydrous material which reduces the damage of bearings, less waste of the fine sand and stone powder. XSD series sand washer is cleaning equipment of international advance level for sand and slag pellets, developed on the basis of introducing foreign outstanding technology of the same kind of products. The machine is widely used for cleaning materials in the following industries: quarry, minerals, building materials, transportation, chemical industry, water conservation and hydropower, and cement mixture station.