| 摘要 |
<p>A metering arrangement for powdered material, particularly powdered beverage ingredients, includes a storage container (18), an outfeed box (22) located beneath the storage container and having an outfeed opening (46), and a reciprocatingly movable outfeed slide (60). The outfeed slide and the outfeed box are embraced by a rubber band (78), for returning the outfeed slide. The outfeed slide co-acts with a motor (36) driven operating slide (40) having an L-shaped cut-out (100) in which a slide driver (94) eccentrically mounted on the crankshaft (92) of the motor is intended to move. When dispensing a metered quantity of powder, the slide driver moves in the tranverse leg of the L-shaped cut-out during a first half of a revolution such as to draw out the operating slide (40) and the outfeed slide (60). The slide driver then passes into the longitudinal leg of the L-shaped cut-out and releases its engagement with the operating slide (40), whereupon the outfeed slide (60) and the operating slide (40) are snapped back by the rubber band (78). The outfeed slide therewith strikes against the outfeed box (22) and generates a shock wave which shakes any arched or bridge-like incrustations present down into the storage containeer (18).</p> |
