CONTROL CAGE FOR CENTRIFUGAL BLAST WHEEL MACHINE

摘要

A centrifugal blast wheel machine includes a wheel assembly configured to throw blast media introduced into the wheel assembly against a work piece. An impeller has a media inlet adapted to receive blast media and a plurality of impeller media outlets that allow egress of blast media upon rotation of the impeller. A motor coupled to the impeller drives the rotation of the impeller and the wheel assembly. A control cage surrounds the impeller and is secured to the wheel assembly. The control cage includes a cylindrical body defining an interior chamber. The cylindrical body has an outer surface, an inner surface, and an opening formed therein to allow the egress of blast media from the interior chamber. The opening has a trailing edge, with the inner surface of the cylindrical body having a raised surface portion adjacent the trailing edge of the opening.