Move the impeller to rotate slowly, and the sand andgravel will enter into the washing tank, driven by the impeller.Rolldown and
grind each other to remove the impurities covering thesurface of sand and stone, and destroy the package.Water vaporlayer covered with sand particles to facilitate dehydration; meanwhile, add water to form strong water flow, and take awayimpurities and foreign matters with small specific gravity, and discharge them from the overflow outlet washing tank cleaning function. The clean sand is taken away by the blade, and finally thesand is taken from the rotating impeller pour it into the dischargetank to complete the cleaning of sand.