A sand washing machine is a device for washing and selecting sand and gravel (artificial sand, natural sand). Sand washing machines are widely used in industries such as sand and gravel fields, mines, building materials, transportation, chemical engineering, water conservancy and hydropower, and concrete mixing plants for material washing and selection. Sand washing machines can be divided into two types: XS type and XL type. It can remove impurities from the surface of sand and gravel, while also breaking the water vapor layer covering the sand particles, which is conducive to dehydration and plays a role in sand washing and cleaning.