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US 4,734,004 AGranted
Sluice device
AssigneeAlfastar AB
InventorsLennart Stenstrom, Lennart Wahlstrom, Torsten Malmgren
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AssigneeAlfastar AB
InventorsLennart Stenstrom, Lennart Wahlstrom, Torsten Malmgren
Estimating the term…
A sluice device for insertion between zones having different environmental conditions, for instance pressure and/or temperature. A drum is rotatably arranged in an opening in a housing and has radially displaceable flaps uniformly distributed along the periphery of the drum. Each flap has a first portion for sealing against the housing, and a second portion of the flap, adjacent to the drum, cooperates with a sealing device. The sluice device is formed as a longitudinal groove which is open against the drum, whereby a longitudinal sealing member 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 of the positive or negative pressure difference.
A sluice device for use in a device for heat stabilization and placeable between zones having different pressure conditions, comprising a drum rotatable in an opening in a housing, in a clockwise or anticlockwise direction, wherein flaps are arranged for radial displacement and are distributed along the circumference of the drum, in that each flap has a first portion for sealing against the housing, and in that a second portion of the flap, adjacent to the drum, comprises an elongated sealing member extending in the longitudinal direction of the drum and having a portion which may be displaced between two positions relative the drum, such that the flap due to the pressure difference is brought in sealing abutment against the inside of the housing, regardless of the positive or negative pressure difference between said zones.
Dependencies are inferred from the claim text.