| 摘要 |
<p>PURPOSE:To improve an aeration effect by connecting a stepped revolving shaft which is formed to a large diameter on the front end side, is fixed with vanes on the outer periphery and is formed to a smaller diameter on a submersible motor side, forming an air chamber in the part enclosed by the submersible motor and the large-diameter part and boring a hole penetrating the large diameter part from the air chamber to the front end side. CONSTITUTION:The stepped revolving shaft is formed to the small diameter part on the submersible motor 1 side, is formed to the large diameter part on the front end side 3b and is fixed with the vanes 2 on the outer periphery on the front end side of the large diameter part 3b. The part of the large diameter of the stepped revolving shaft 3 is bored with plural pieces of the holes 15 penetrating the front end side from the submersible motor 1 side. The water around a stand 6 is sucked into a draft ring 16 when the vanes 2 rotate. This water is discharged to generate water flow WF while the water is stirred. The air in the air chamber 12 flows out of the holes 15. Since the holes 15 exist outer than the diameter of the small-diameter part, the position is moved by the rotation and the air is cut by the water and the shaft end, by which the air is made into microparticles. The sufficient mixing of the water and the air is thus executed.</p> |
