APPARATUS AND PROCEDURES FOR DISPENSATION AND DUST DETECTION.

摘要

A dust dispensing module (54), comprising: a housing (150) defining a dust inlet (130) for receiving dust, a dust outlet (158), and a conduit (152, 254) that connects the dust inlet (130) and dust outlet (158), a feed rod (160) for moving dust through the conduit (152, 154) from the dust inlet (130) to the dust outlet (158) , and a rod actuator (162) for rotating the feed rod (160) in the conduit (152, 154); wherein the conduit (152, 154) includes a powder bed preparation zone (156a) below the dust inlet (130), a powder bed compression zone (156b) below the zone ( 156a) of powder bed preparation, and a dust discharge zone (156c) below the powder bed compression zone (156b), and in which the feed rod (160) comprises a shaft (170 ), a powder bed preparation element (164) in the powder bed preparation zone (156a), and a discharge element (166) in the dust discharge zone (156c).