Features:

1. It is of simple structure. The bearing device of impeller drive is separated from water and materials with water, to avoid in a large degree that the bearings are damaged by being soaked with water, sand or some polluted things.

2. When it is used for cleaning sand in quarries, it has many advantages compared with the traditional spiral one.

3. There is little loss for medium-sized and fine sand and stone powder. The grade and the fineness of the sand for construction after being washed can be up to the national standards, such as "sand for construction" and "cobble and broken stones for construction".

4. There are no other wearing parts except the screen mesh.

5. It features long service life and few times for maintenance.