| 摘要 |
<p>The invention concerns a bubble elevator comprising an orifice (7) intermediate between the air-tapping point (5) for driving the liquid and the top opening (4) for expelling the air-liquid mixture. The mixture can be expelled by the orifice (7) when the vessel is slightly filled and its content cannot be driven to the top, or on the contrary additional air suction can be provided. The bubble elevator is generally used for stirring and homogenising the liquid content of a vessel.</p> |
