US 12,221,973 B2
Self-aspirating and gas-liquid dispersing impellers
Zhiyong Zheng, Wuxi (CN); Minjie Gao, Wuxi (CN); and Xiaobei Zhan, Wuxi (CN)
Assigned to Jiangnan University, Wuxi (CN)
Filed by Jiangnan University, Wuxi (CN)
Filed on Jun. 19, 2023, as Appl. No. 18/337,093.
Application 18/337,093 is a continuation of application No. PCT/CN2022/126121, filed on Oct. 19, 2022.
Claims priority of application No. 202210132423.3 (CN), filed on Feb. 14, 2022.
Prior Publication US 2023/0332612 A1, Oct. 19, 2023
Int. Cl. B01F 23/233 (2022.01); F04D 29/18 (2006.01); F04D 31/00 (2006.01)
CPC F04D 29/18 (2013.01) [F04D 31/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An impeller comprising: a stirring shaft (1), a hub (2), a disc (3) and a plurality of blades (4);
the stirring shaft (1) being a hollow stirring shaft, the hub (2) being coaxially sleeved on the stirring shaft (1), the disc (3) being connected to the hub (2), the plurality of blades (4) which extend in the radial direction being arranged on the circumferential side face of the disc (3), and a gas inlet channel (31) being formed in the disc (3);
each of the plurality of blades (4) comprising an upper curved surface (41) and a lower curved surface (42), a rotary cavity (50) being embedded between the upper curved surface (41) and the corresponding lower curved surface (42), and the rotary cavity (50) communicating with the hollow stirring shaft (1) through the gas inlet channel (31);
one side of the rotary cavity (50) is a liquid facing surface (46), the other side of the rotary cavity is a liquid backing surface (45), a liquid inlet channel (49) is formed in the liquid facing surface (46), and the liquid inlet channel (49) communicates with the corresponding rotary cavity (50); and
the upper curved surface (41) and the corresponding lower curved surface (42) converge on the corresponding liquid backing surface (45).