| 摘要 |
The invention relates to a vacuum valve comprising a valve housing (1) with a valve opening (2, 3) that has an axis (4, 5) and is surrounded by a valve seat (6, 7), a valve plate (10, 11) that releases the valve opening (2, 3) in an open state of the valve opening (2, 3) and rests against the valve seat (6, 7) in a closed state of the valve opening (2, 3), and a support unit (9) that supports the valve plate (10, 11) and can be moved between a first position, in which the valve opening (2, 3) is in the open state, and a second position. The valve plate (10, 11) is connected to the support unit (9) via at least two spaced drive elements (20) of the support unit (9) and can be moved between a retracted position and an extended position by the drive elements (20). In the second position of the support unit (9) and in the extended position of the valve plate (10, 11), the valve opening (2, 3) is in the closed state. In the retracted position, the valve plate (10, 11) is supported against the support unit (9) via at least one support element (33) made of plastic. |
