| 摘要 |
<p>In a powder and granular material feeder for constantly feeding powder and granular material with poor fluidity discharged to an annular passage (space part (D) between inner and outer tubes) through a clearance between a lower end (3") of an inner tube (3) and a bottom plate (1) from a fall opening (8) at the space part (D) to an outside of the feeder by scraping plates (11) immediately below the fall opening (8), the fall opening (8) is formed in an arcuate configuration starting on an outer side of the outer tube (2) to the inner tube (3) or to an inner side of the inner tube (3), and the scraping plates (11) are formed on a small cylinder (9) formed about a center of curvature (C') of the arcuate configuration. Further, in the powder and granular feeder, the scraping plates (11) and spokes (5) rotate in opposite directions to each other at a portion of the fall opening (8), and the powder and granular material transferred by the spokes (5) and inward claws (7) into the fall opening (8) is discharged in the direction opposite to the feeding direction by the scraping plates (11) while leveled off by an lower edge (2") of the outer tube (2).</p> |
