| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the need for the cleaning of a seal part considered necessary heretofore and also to suppress the wear of the seal part. SOLUTION: The powder, etc., in a vessel are discharged downward from an opening Yh formed in the side face of the vessel Y by this discharger 10. In this case, the opening Yh is opened or closed by rotating a seal member 12 attached to the peripheral part of the opening Yh and a periphery 33 in contact with the member 12, and the discharger has a valve element 30 so shaped as to drop the powder, etc., extruded from the opening Yh when the opening Yh is opened and a discharge hole 23 disposed at the falling position of the powder, etc. Consequently, the powder, etc., depositing on the periphery 33 and member 12 while the periphery 33 is rotated are scraped off by the sliding of the outer periphery 22 and the member 12. Accordingly, the powder, etc., are not held in a contact part (seal part) between the periphery 33 and member 12.
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