US 12,146,819 B1
System and method for determining critical suspension speed of impeller in solid-liquid stirred tank
Datong Wang, Qingdao (CN); Ting Xu, Qingdao (CN); Hao Wang, Qingdao (CN); Fujun Lu, Qingdao (CN); Peng Guo, Qingdao (CN); Changhai Zhou, Qingdao (CN); Xu Yang, Qingdao (CN); and Tao Yue, Qingdao (CN)
Assigned to QINGDAO UNIVERSITY OF SCIENCE & TECHNOLOGY, Qingdao (CN)
Appl. No. 18/681,851
Filed by QINGDAO UNIVERSITY OF SCIENCE & TECHNOLOGY, Qingdao (CN)
PCT Filed Sep. 7, 2022, PCT No. PCT/CN2022/117531
§ 371(c)(1), (2) Date Feb. 6, 2024,
PCT Pub. No. WO2023/098204, PCT Pub. Date Jun. 8, 2023.
Claims priority of application No. 202111468033.5 (CN), filed on Dec. 4, 2021.
Int. Cl. G01N 15/04 (2006.01)
CPC G01N 15/04 (2013.01) 3 Claims
OG exemplary drawing
 
1. A system for determining a critical suspension speed of an impeller in a solid-liquid stirred tank, comprising a stirred tank, wherein an impeller is provided in the stirred tank; the impeller is connected to a motor; the motor is connected to a speed controller; a side wall of the stirred tank horizontally flush with the impeller is provided with a first set of electrodes; a middle bottom position of the stirred tank is provided with a second set of electrodes; the first set of electrodes comprises two first excitation electrodes and two first measurement electrodes; the second set of electrodes comprises two second excitation electrodes and two second measurement electrodes; the first excitation electrodes and the second excitation electrodes are connected to a constant-current source; and the first measurement electrodes and the second measurement electrodes are connected to a computer through an analog-to-digital converter;
wherein the first excitation electrodes are equidistant between the first measurement electrodes, and the second excitation electrodes are equidistant between the second measurement electrodes.