Crown-drilling pumping sand:
Pumping sand drilling works: pumping sand work, the motor through V-belt, gear, rear wheel drive gear rotates slowly, gravel have to wash trough into the tank, roll driven impeller and grinding each other, remove cover gravel surface impurities, while the destruction of vapor-coated sand layer, in order to facilitate dehydration; while adding water to form a strong current, 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 action. Clean gravel away from the blade, and finally into the gravel from the rotation of the impeller discharge chute, complete cleaning effect gravel.
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