	US 12,228,139 B2
	Two-stage cavitation generator for organic wastewater treatment
Yong Wang, Jiangsu (CN); Ming Li, Jiangsu (CN); Zhiyao Ding, Jiangsu (CN); Qin Pi, Jiangsu (CN); Qiang Xu, Jiangsu (CN); Yu Hu, Jiangsu (CN); Yu Huang, Jiangsu (CN); and Houlin Liu, Jiangsu (CN)
Assigned to Jiangsu University, Jiangsu (CN)
Appl. No. 18/564,101
Filed by Jiangsu University, Jiangsu (CN)
PCT Filed Jun. 19, 2023, PCT No. PCT/CN2023/101008 § 371(c)(1), (2) Date Nov. 27, 2023, PCT Pub. No. WO2023/222140, PCT Pub. Date Nov. 23, 2023.
Claims priority of application No. 202210529935.3 (CN), filed on May 16, 2022.
Prior Publication US 2024/0218883 A1, Jul. 4, 2024
Int. Cl. F04D 29/22 (2006.01); F04D 1/04 (2006.01)

CPC F04D 29/2216 (2013.01) [F04D 1/04 (2013.01); F04D 29/2272 (2013.01)]

8 Claims

1. A two-stage cavitation generator for organic wastewater treatment, comprising a shrouded impeller, a stator, and a rotor, wherein the shrouded impeller comprises a front cover plate, several blades, and a rear cover plate, the several blades are evenly distributed between the front cover plate and the rear cover plate, a working surface of each of the blades is an arc surface, and a back of each of the blades protrudes locally, so that a flow channel between the back of each of the blades and the working surface of an adjacent one of the blades is narrowed locally, forming a throat structure; an outlet of the shrouded impeller is provided with the stator and the rotor, and the stator is located at an outer edge of the front cover plate and fixed on an inner wall of a volute; the rotor is mounted on the rear cover plate, a gap is provided between the stator and the rotor, and blind holes are respectively provided on the stator and rotor on both sides of the gap, for performing secondary cavitation.