Method and apparatus for handling a product
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United States of America Patent
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Nov 21, 2017
Issued Date -
N/A
app pub date -
Jul 10, 2013
filing date -
Jul 11, 2012
priority date (Note) -
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Abstract
A method for handling a product, in particular a viscous, pasty product, with at least one rotating shaft (3, 11) in a product space (5), a driving spindle (11) of the shaft (3) is mounted and sealed outside the product space (5) in a housing consisting of a plurality of parts (7, 8, 12). The sealing is brought about by at least two seals (2, 4), wherein a dynamic seal (2) follows an eccentric movement of the shaft (3) and takes on dynamic sealing of the rotating shaft (3), while another seal (4) compensates for an eccentric movement of the shaft (3) in relation to the housing by plastic or elastic deformation and therefore prevents a leakage between the housing part (12), which moves eccentrically, and a rigid housing (10). A defined quantity of liquid, which serves as a blocking agent and lubricant for the dynamic seal (2) of the shaft (3) towards the housing part (7), is metered in here, the liquid, apart from a residual excess, being drawn into the dynamic seal (2) by a pressure difference therewithin and thereby forming an effective block and seal.
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