Ventilator device for hydro pneumatic sprayer of plant protection treatment, has impeller and diverter, and axial projections of edges of adjacent blades of impeller and diverter intersects timely at multiple points

摘要

The device has an impeller and diverter. Ventilating blade profiles are also provided. The axial projections of the edges of adjacent blades of the impeller and divertor intersect in timely at multiple points, which introduce convex curves at different curvature. A synchronized regulatory system is provided to the passage of the blades.