Wing type impeller

The invention discloses a wing type impeller which comprises a plurality of special-shaped surface blades, and each special-shaped surface blade is provided with a first curved surface blade body and a second curved surface blade body. The curved surface radian of the first curved surface sheet body is larger than that of the second curved surface sheet body, so that an arch-shaped gap is formed between the first curved surface sheet body and the second curved surface sheet body, and the second curved surface sheet body reversely extends in the direction away from the first curved surface sheet body to form an extending part. And the curved surface radian of the extension part is the same as that of the second curved surface sheet body. The wing type impeller disclosed by the invention has the beneficial effects that when the wing type impeller rotates at a high speed, compared with a traditional impeller, the wing type impeller is smaller in worm dissipation, less in energy loss and higher in efficiency corr