Patent ID: 9399222
Filing Date: 2016-07-26
CPC Classification: B02C

Claim Text:
1. An air flow control arrangement for a pulverizer, the air flow arrangement comprising: inner and outer ring segments configured in a spaced relation to each other; a plurality of vanes arranged between the inner and outer ring segments to form flow ducts; and a plurality of wingtips, wherein each wingtip of the plurality of wingtips is removably attached to a respective vane of the plurality of vanes such that each wingtip is selectively replaceable; wherein the inner and outer ring segments are configured as a two-piece structure such that the outer ring segment is removably attachable to the inner ring segment, and wherein the plurality of vanes extends radially outward from the inner ring segment; and wherein an outer wall of the inner ring and an inner wall of the outer ring define inner and outer walls, respectively, of the flow ducts.