| 摘要 |
<p>A multifunctional vacuumizing device has a working valve connected to a vacuum valve by a communicating pipe. Vacuum pumps (2,3) are communicated with a working chamber (1) comprising at least one vacuum channel that is communicated with the vacuum valve by a communicating pipe. A gas manometer (64) is communicated with the vacuum valve by a communicating pipe. The vacuum pumps and the working chamber are located in a supporting structure (4). The vacuum pump, the vacuum valve and the working valve are controlled by a programmable logic controller via an electromagnetic valve.</p> |
