Roller press with annular disc
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United States of America Patent
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Nov 29, 2011
Grant Date -
Aug 12, 2010
app pub date -
Jul 21, 2008
filing date -
Jul 25, 2007
priority date (Note) -
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Abstract
A roller press (1) is described for grinding particulate material such as cement raw materials, cement clinker and similar materials, the roller press having two oppositely rotating rollers (2, 3) with one roller being movably supported relative to the other roller and with the rollers (2, 3) forming between them a roller gap (4). A co-rotating annular disc is attached to one of the rollers (2), which subject to actuation by a number of springs (7), is movable in the direction of the roller axis and which, in the area around the roller gap (4,) extends over the end surface (3a) of the other roller. The annular disc is divided into a number of ring sectors (5) over its circumference, each individually biased by springs towards the end surface (3a) of the other roller (3). Hence, it is possible to maintain the grinding bed thickness at the ends of the rollers, thereby attaining a uniform pressure distribution across the rollers, as well as uniform grinding efficiency and uniform wear on the rollers.
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