B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/11, 32/36
B01D 19/00 (2006.01) F04D 1/12 (2006.01)
Patent
CA 1075169
AIR SEPARATOR METHOD AND APPARATUS Abstract of the Disclosure A rotating separator removes air coating from pigmented paper coating liquid stock. The separator employs a cylindrical tank which is mounted for rotation about a vertical axis. The separator is operated in a filled con- dition and an air laden or froth fraction is removed from a radially central region of the tank at the top of the tank, while a non-rotating pickup receives air free coating from a region adjacent the wall of the tank near the tank bottom. The method of treating and applying such a coating includes the steps of pumping an air laden coating into a centrifugal separator while maintaining the separator in a filled condition, removing an air froth from the separator for return to the supply tank, and delivering a substantially air free coating directly to the inlet of a control without the imposition of any intermediate pumping apparatus. The centrifugal pumping action of the separator supplements the pressure head on the coating material.
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