| 摘要 |
PROBLEM TO BE SOLVED: To provide an aeration device that can efficiently stir a liquid while micronizing gas discharged in the liquid and devising uniform distribution thereof.SOLUTION: An aeration device 1 includes: a body 10 having the inner surface of a flow channel of which both ends are opened to be formed in a cylindrical shape and of which cross sectional shape is pentagonal; a wing member 24 which is disposed in a multistage by allowing the direction to be changed in the inner surface of the flow channel; and an injection nozzle 32 mounted to the one opening end of the body 10. The aeration device 1 is constituted so that the body 10 is immersed in a liquid while the body 10 is erected so that the injection nozzle 32 is disposed beneath the body 10; the gas is injected in the body 10 from the injection nozzle 32; and the injection nozzle 32 is disposed so that the center line C of an injection port 32a formed on the edge intersects the internal surface of the flow channel on the lower side than the wing member 24 disposed on the lowest stage, and the angle formed between the center line (C) and the vertical direction is 45° or less. |
