| 摘要 |
<p>Excess coating material removed from a coated web 1 by an air doctor 6 and entrained in the exciting gas mixture flow 8 is directed along a plate 9 to effect primary coating material separation and recovery in a chamber 11, whereafter the flow passes along an inwardly spiraling apparatus wall 14 which terminates in an air exhaust duct 16. The wall 14 initially continues the prolongation or extension plane of the plate 9, and includes secondary recovery chambers 13 and 15, whereby separation is implemented by both centrifugal and gravitational forces. The same concepts may also be used to recover solid particles in a surface abrasion apparatus such as a sand blaster.</p> |
