VOLUMETRIC FEEDER FOR POWDER AND GRANULAR MATERIAL AND COMBINATION BALANCE OF POWDER AND GRANULAR MATERIAL

摘要

A volumetric feeder 20 is made of a plurality of independent feeder elements 20a, 20b, etc. Each of the feeder elements 20a, 20b, etc. is provided with a stationary portion 21 and a movable volumetricmeasure 22 that can move back and forth in the stationary portion 21. Each movable volumetric measure 22 is provided with a measure portion 23 for accommodating a predetermined volume of powdery or granular material. The movable volumetric measures 22 in the feeder elements 20a, 20b, etc. are capable of moving, independently of one another, between a powdery- or granular-material-charging position at which the measure portions 23 coincide with charging apertures 24 of the stationary portion 21, and a powdery- or granular-material-discharging position at which the measure portions 23 coincide with discharging apertures 26 of the stationary portion 21. This makes available a volumetric feeder that can be used for a powdery-or granular-material combination weigher, and a powdery- or granular-material combination weigher that uses the volumetric feeder of this kind. IMAGE