DEVICE FOR GENERATING GAS-LIQUID MIXING CIRCULATIVE FLOW

PROBLEM TO BE SOLVED: To provide a device for generating gas-liquid mixing circulative flow generating strong circulative flow with a small amount of energy and efficiently dissolving oxygen into liquid. SOLUTION: At least one line of helical groove is disposed on an inner circumferential surface of a cylindrical body in which the liquid flows, and a drawing mechanism in which the cross-section diameter is narrowed is disposed on an intermediate part of the cylindrical body. A single or bisected pressurized gas introduction chambers are disposed on an outer circumferential surface of the drawing mechanism, the gas in the pressurized gas introduction chambers is blown toward the center part of the cylindrical body and a first gas ejection port is perforated on the drawing mechanism part so as to contribute to the generation of an axial flow. Similarly, the gas in the pressurized gas introduction chambers is blown toward the helical groove, and a second gas ejection port is perforated on the drawing mechanism part so as to contribute to the generation of a swirling flow. COPYRIGHT: (C)2011,JPO&INPIT