| 摘要 |
An air-lock valve ( 1 ), especially for a band processing plant, provided for closing a gap-like opening ( 3 ), traversed by a flexible band substrate ( 4 ), between two different plant sections, featuring at least one moveable sealing body ( 7 ), cooperating with a sealing surface ( 5 ), when it closes said opening ( 3 ), and eventually said band substrate ( 4 ) is being firmly mounted between said body ( 7 ) and sealing surface ( 5 ) during the closing operation of said air-lock valve ( 1 ), is characterized, according to the invention, in that the sealing surface ( 5 ) surrounds opening ( 3 ) in frame-like fashion, and in order to close opening ( 3 ), said body ( 7 ) may be pressed in such a fashion upon sealing surface ( 5 ) and/or upon band substrate ( 4 ), traversing said opening ( 3 ), that it obstructs said opening ( 3 ) at least due to indirect juxtaposition at the edges of said sealing surface ( 5 ).
|
