| 摘要 |
PROBLEM TO BE SOLVED: To provide a nozzle capable of simply forming an air bubble of a desired size.SOLUTION: A hollow part of a sleeve attached to an inner part of a nozzle main body is set as an air channel, a liquid channel is disposed between an outer circumference of the sleeve and an inner circumference of the nozzle main body, an air injection port on a front end of the sleeve is arranged in a gas-liquid whirling chamber communicated with an injection port of the nozzle main body and a whirler for generating whirling flow which is inserted to the liquid channel is arranged on an outer circumferential surface leaving a required size from the air injection port of the sleeve, liquid is whirled and is caused to flow into the gas-liquid whirling chamber through the whirler, at the same time, air is injected to the center of whirling liquid as an air core from the air injection port of the sleeve to generate air the bubble, further, a protrusion amount of the sleeve into the gas-liquid whirling chamber is changed to change an air suction amount and the air bubble of the required size is generated.SELECTED DRAWING: Figure 2 |
