Classifying – separating – and assorting solids – Fluid suspension – Gaseous
Patent
1981-12-11
1983-07-19
Hill, Ralph J.
Classifying, separating, and assorting solids
Fluid suspension
Gaseous
209149, 209154, 51425, 51429, B07B 704
Patent
active
043942563
ABSTRACT:
An apparatus for separating debris from spent abrasive in an abrasive blasting apparatus in which the debris and spent abrasive are recirculated from a blast zone at high velocity along a recirculation chamber includes means for receiving debris and spent abrasive from the recirculation chamber and allowing a quantity of the debris and spent abrasive to collect thereby forming a pile having a face exposed to incoming debris and spent abrasive. The pile has an angle of repose, whereby additional incoming debris and sent abrasive fall down the face to form a substantially unobstructed, vertical, uniform curtain of falling debris and spent abrasive. Means for providing a stream of fluid through the recirculation chamber are provided. Means having first and second openings are provided for drawing off the stream of fluid, which is divided into portions, from the recirculation chamber. The falling curtain of debris and spent abrasive is washed by the stream of fluid as it passes from the recirculation chamber to the drawing means to entrain the debris from the falling curtain in the stream of fluid.
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Blast Cleaning & Shot Peening, Cleveland Metal Abrasives, Inc., 887 E 67th St., Cleveland, Ohio 44103, pp. 8-11.
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