| 摘要 |
<p>A device for water surface aeration, composed of a pump, a float and a multi-vent nozzle, characterised in that the float (3) has a centrically mounted submerged turbine pump (1), whereas the outlet vents in the nozzle (4) are arranged in rows which are concentric to the vertical axis of the device and inclined at an angle to the axis, whereas the inclination angle is different in each row and increases with the distance between the row and the device vertical axis.<IMAGE></p> |
