Dual Shaft Arrangement with Adjustable Axial Spacing and Improved Sealing Unit
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United States of America Patent
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Issued Date -
Jun 26, 2014
app pub date -
Apr 14, 2011
filing date -
Apr 27, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a device having two rotational shafts which are arranged at least essentially parallel to each other and associated with rotational axes (13a, 15a) separated by means of an adjustable distance. The shafts extend respectively through a wall (28) which separates a drive side from the product side, and are sealed with respect to the wall (28). In order to improve sealing between the product side and the drive side, the sealing of said type of arrangement is maintained between each shaft (13) comprising an adjustable rotational axis and the wall (28) by means of a sealing unit (32) which surrounds the associated shaft (13) in the region of the wall (28); when the rotational axis is adjusted, said sealing unit remains in its position with respect to said rotational axis; said sealing unit (32) comprises, radially inwards, a dynamic seal for sealing between the rotational shaft (13) and the sealing unit (32), and radially outwards, a static sleeve seal (52) which is fixed in a sealing manner, radially inwards on the sealing unit (32) and radially outwards, on the wall (28) and comprises an elastic sealing collar (58).
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