Screw-type heat-exchanger system with variable-clocking screw conveyors
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United States of America Patent
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Jun 3, 2014
Issued Date -
N/A
app pub date -
Feb 13, 2012
filing date -
Feb 11, 2011
priority date (Note) -
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Abstract
A system for treating a material includes first and second screw conveyors each having a rotary shaft and a helical flight extending radially outward therefrom, the flighting of the screw conveyors overlapping with each other, and first and second actuators operably coupled to the first and second screw conveyors in a one-to-one dedicated relationship to rotationally drive the screw conveyors independently of each other. In typical embodiments, also included is a system for varying the clocking position of the screw conveyors relative to each other, wherein the screw conveyor flights are axially adjusted with respect to each other between a normal position and an advanced and/or retarded position. Also disclosed are methods of varying the axial position of the screw conveyor flights with respect to each other between the normal and advanced and/or retarded positions.
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