Patent ID: 7017501
Filing Date: 2006-03-28
Classification: F23K

Abstract:
1. A riffle distributor assembly for delivering pulverized solid fuel from an exhauster having a downstream open end to a pair of branch ducts each having an upstream end for distribution to at least a pair of burners mounted in a combustion vessel in order that the pulverized solid fuel can be combusted in a combustion process in the combustion vessel, said riffle distributor assembly comprising: a plenum forming an enclosed space extending from the downstream open end of the exhauster to the upstream end of each of the pair of branch ducts; a plurality of riffle element plates supported within said plenum, each of said plurality of riffle elements having an intake opening; each intake opening of each of said plurality of riffle element plates being formed by a vane subassembly; said vane subassembly including a parallelepiped frame and a plurality of intake vanes; said parallelepiped frame having a first side panel and a second side panel; each of said plurality of intake vanes having a first side and a second side, and each of said plurality of intake vanes being pivotally connected by a pivot connection to a respective one of said plurality of riffle element plates; a slide drive slidably supported for sliding movement of said slide drive in a first direction, said slide drive including a plurality of cut-outs; said first side of each of said plurality of intake vanes being pivotally mounted at a respective pivot location to said slide drive such that a portion of each of said plurality of intake vanes extends into a respective one of said plurality of cut-outs; said respective pivot location at which each of said plurality of intake vanes is pivotally mounted to said slide drive is spaced in a second direction from the respective pivot connection at which each of said plurality of intake vanes is pivotally connected to the respective one of said plurality of riffle element plates; and said second side of each of said plurality of intake vanes being pivotally mounted to a respective pivot bore formed in a first side panel of said parallelepiped frame.