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How does a sand screw work?

Sand screw washers are specifically designed for washing, grading, dewatering and impurity removal of sand, gravel, aggregate, mine, coal, and other fine grained and coarse grained materials, which can improve the quality of finished sand and control the content of stone powder. So they also be called coarse material screw washer and fine material washer.


Sand screw washer mainly stirs  sand and gravel material through the screw device in the equipment, so that the soil in the sand stone material is mixed with water, and the sand stone material is gradually screened by the screw device, and is discharged from the top discharge port. In order to achieve the cleaning and screening effect of sand and gravel. The low power consumption and high washing degree, good sealing structure, fully enclosed transmission device and adjustable jaw plate of sand screw ensure the durable, clean and dehydrated of finished products.


sand screw


How does a sand screw work?
The screw type sand washer is equipped with water spray pipes in cleaning tank. When working, a certain amount of water is supplied to flush and submerge the raw sand loaded into the tank from the inlet. At the same time, the spiral is continuously stirred and graded, and dirt impurities and tiny sand particles are suspended in the upper turbid water, gradually overflowing from the low-end overflow weir; the coarser sand particles sink to the bottom of the tank by gravity. As the spiral rotates continuously, the coarse sand is continuously agitated and graded in the water, so that the sand is fully washed.


Screw sand washer performance features
1. Simple structure and stable operation.
2. The bearings are separated from the water and materials to avoid premature damage caused by pollution and rust.
3. Suitable for a variety of work environments.
4. High cleaning efficiency, and the material to be washed has less loss, which can fully meet the requirements of high-grade materials.
5. Long service life, almost no wearing parts.


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