| 摘要 |
PROBLEM TO BE SOLVED: To provide a powdery raw material supply device which can prevent powdery raw material from being blown out, by suppressing rise in the pressure in a discharge passage as the powdery raw material is discharged. SOLUTION: The powdery raw material put in a canister 4 is pushed out of a discharge opening 4a of the canister 4 by a discharging body 18, also made to fall from the discharge opening 4a through a discharging opening body 13 and a discharging cylinder 14 extending below them, and to be temporarily stored in a raw material chute 27. This powdery raw material supply device is provided with an air vent 17 in a part of the wall surface of the discharging opening body 13.
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