| 摘要 |
<p>A sluice device for insertion between zones having different environmental conditions, for instance pressure and/or temperature. A drum (20) is rotatably arranged in an opening in a housing and has radially displaceable flaps (18) uniformly distributed along the periphery of the drum. Each flap has a first portion (21) for sealing against the housing (13), and a second portion of the flap, adjacent to the drum, co-operates with a sealing device (22). This device preferably is formed as a longitudinal groove (22) which is open against the drum and a longitudinal sealing member (24) is arranged in the groove. The pressure difference between spaces at the two sides of the flap brings the longitudinal sealing member in such a sealing position that the flap, by the pressure difference, is placed in sealing abutment against the inside of the housing regardless positive or negative pressure difference.</p> |
