| 摘要 |
<p>The lavatory bowl (1) is connected to a discharge tank (3) via a rise pipe (2). The tank also has an outlet (5). An air inlet (6) and a safety tank (7) are connected via a further line (8). In the steady state, a column of liquid stands in the rise pipe to a certain height (h) above the liq. level in the inlet. The liquid in the inlet and rise pipe forms a seal between the inlet and the vacuum pump. Removal of liquid in the column is effected by blocking the air inlet. A tank provides liquid to replenish that removed, without breaking the seal.</p> |
