The spiral washing machine can achieve the cleaning effect of sand and stone. The spiral washing machine is equipped with a spiral device, which can mix sand and water well, and then sand and stone can be screened step by step. The washing effect of the machine is very good, and the energy consumption is small. Spiral stone washing machine is a kind of stone washing machine, mainly through the spiral device in the equipment to mix the sand and stone, so that the soil and water in the sand and stone are mixed and discharged from the flow port on the equipment, while the sand and stone are gradually screened under the function of the spiral device, and discharged from the discharge port on the top, so as to achieve the cleaning and screening effect of sand and stone. The spiral washing machine is suitable for the washing, classification and impurity removal of metallurgy, building materials, hydropower and other industries, as well as the washing of fine-grained and coarse-grained materials. It is suitable for building sand and road sand. The spiral sand washing machine has the advantages of small power consumption and high cleanliness. With good sealing structure, fully closed transmission device and adjustable weir plate, the product features high efficiency, durability, good cleaning, dehydration effect and stable fine product. It is widely used in construction site, sandstone field, concrete prefabrication plant, hydropower station, concrete dam site, mine, building materials, transportation, chemical industry, etc