| 摘要 |
<p>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 the lower end (3") of the inner tube (3) and a bottom plate (1) from a fall opening (8) at the space part (D) to the outside of the feeder by scraping plates (11) just below the fall opening (8). The fall opening (8) is formed in a circular arc shape starting at the outside of the outer tube (2) to the inner tube (3) or to the inside of the inner tube (3), and the scraping plates (11) are formed on a small cylinder (9) formed about the center of the curvature (C') of the circular arc shape. Furthermore, the powder and granular feeder is characterized in that the rotating directions of the scraping plates (11) and spokes (5) are reverse to each other at the portion of the fall opening (8), and the powder and granular material fed by the spokes (5) and inward claws (7) into the fall opening (8) is discharged in the revere direction of the feeding direction by the scraping plates (11) in the state of being leveled with the lower edge (2") of the outer tube (2).</p> |
