| 摘要 |
<p>A shutting-off arrangement for dental suction equipment provided with a suction channel (2, 3) has a shutting-off mechanism (8, 9) moved by a working medium. The shutting-off mechanism (8, 9) is associated on the one hand with the suction channel (2, 3) and on the other hand with a supply channel (5, 6) that feeds a supplementary medium to the suction channel (2, 3). Each of the two channels is preferably provided with its own shutting-off diaphragm (8, 9), and both channels (2, 3; 5, 6) are closed or opened at the same time.</p> |
