Feed screw arrangement
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United States of America Patent
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Dec 27, 2016
Grant Date -
Sep 4, 2014
app pub date -
Jun 28, 2012
filing date -
Jul 1, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A feed screw for feeding lignocellulosic material to a rotary disc refiner is disclosed. The feed screw includes at least one peripheral thread for feeding the lignocellulosic material axially towards the disc refiner and the feed screw feeds the lignocellulosic material from its upstream end towards its downstream end through the center of the opposed grinding surfaces of the disc refiner, the downstream end of the peripheral thread including an angled end part disposed at an angle with respect to the peripheral thread such that the lignocellulosic material is redirected in a radial direction as it leaves the end of the peripheral thread.
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