Pulp screen rotor with slurry passages around and through the rotor
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United States of America Patent
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Oct 28, 2014
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app pub date -
Dec 12, 2012
filing date -
Dec 12, 2012
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Abstract
A rotor adapted for mounting for rotation within a screen of a pulp screening apparatus, and for defining a screening space between the rotor and the screen so that pulp suspension flows into the screening space, with accepted pulp passing through the screen to a stock outlet and rejected pulp passing along a screen inlet surface in a screening flow direction to a rejects outlet. The rotor has an interior, and an exterior with pressure impulse protuberances thereon for rotation with the rotor in close proximity to the inlet surface. A stock inlet communicates with the screening space and the rotor interior. And the rotor has at least one opening extending in the screening flow direction from its interior to its exterior for over at least a fourth of screening flow length of the rotor for admitting a substantial portion of pulp suspension from the stock inlet and the rotor interior into the screening space.
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