ROTARY FEEDER FOR POWDER

PROBLEM TO BE SOLVED: To provide a rotary feeder, which is to be exchanged when a proper clearance between a casing, a rotating rotary and rotating blades is worn by fallen powder but it is possible to adjust the clearance between them, possible to adjust the clearance by an increase of the clearance when a limit is periodically predicted by previously measuring and grasping an abrasion rate with the lapse of time. SOLUTION: This rotary feeder for power is structured by coupling a lateral cylindrical rotary casing to a lower part of a powder hopper storing the powder through a powder lead-in casing, providing a rotary comprising a rotating blade 106 in the periphery thereof in the rotary casing, and continuously providing a discharge pipe. A clearance adjusting casing is provided in the powder lead-in casing freely to elevate, and a compression spring type support mechanism for holding the clearance adjusting casing to set the base position thereof and an air cylinder type clearance adjusting mechanism for holding the clearance adjusting casing to set the lower edge position thereof in a predetermined position are fitted to the power lead-in casing. COPYRIGHT: (C)2008,JPO&INPIT