The efficient sand washing machine of XSD series is a kind of cleaning equipment of international advanced level for sand and slag pellets, developed on the basis of introducing foreign outstanding technology of the same kind of products. Sand washer is used to remove the dust in sand. It aims at improving the quality of sand. The materials include the required gravel in building-site, gravel factories, hydropower station and concrete dam site, post and electric pole factory, casting-70 sand, glass factory’s quartz sand and refilling pressure sand. It is widely used for cleaning materials in the following industries: quarry, minerals, building materials, transportation, chemical industry, water conservancy and hydropower, cement mixture station and so on.