Apparatus for cleaning surfaces, including means for separating debris and abrasive material

摘要

A blasting machine having a blasting device for directing abrading material at high velocity through an opening adjacent a surface to be cleaned. Incorporated between an upwardly-extending conduit for receiving rebounded, spent abrasive and an elevated hopper for delivering abrasive to the blasting device is a cleaning apparatus having sufficient vertical elongation to clean and remove debris effectively from the abrasive recovered during the cleaning operation. The upwardly-extending conduit directs the rebounded abrasive into an upper part of the abrasive cleaner. The cleaner has a series of vertically-disposed baffles to create an array of showers of debris and abrasive through which is drawn air to entrain and separate the debris from the abrasive. The abrasive after having been cleansed is collected in a lower part of the machine and returned to the elevated hopper for delivery to the blasting device. The debris withdrawn from the abrasive is collected in a remote position for discarding.