| 摘要 |
The proposed pump has an open, non-clogging lower impeller and at least one other impeller (5) to introduce the secondary stream into the mixing chamber of the pump. It also has an air chamber. To ensure the required flow of the secondary stream, the fan type impeller (3) is provided with paddles (5) which extend beyond the base (4) of the lower impeller. Correct mixing is ensured by using the vertical pressure pipe as an air-life pump. |
