Crown-drilling pumping sand:
Drilling pumping sand works: pumping sand work, the motor through V-belt, reducer, gear reducer drive after slowly rotating impeller, sand and gravel into the wash tank has a feeding trough, tumbling driven impeller and grinding each other, remove impurities gravel surface covering, while destruction of vapor-coated sand layer, in order to facilitate dewatering; while adding water to form a strong water flow, timely small proportion of impurities and foreign objects away and wash tank is discharged from the overflow outlet, complete and efficient pumping sand into the cleaning effect. Clean sand away from the blade, the final rotation of the impeller into the gravel from the trough, complete cleaning action gravel.