Behavior of Powders and Granules in Linear Vibrating Feeder (KC-ST Type)

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  • 直進振動フィーダー (KC-ST型) における粉粒体の挙動

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Fluidizing phenomena of powders and granules are roughly divided into gravity fluidity and forced fluidity. The former occurs by the particles' own weight and the latter by external force. Behavior of mixtures of powders and granules of different physical properties was studied in terms of vibration fluidity (one of the forced fluidity) with use of a linear vibrating feeder.(The study must be significant in view of the recent development of automatic powder packaging machines.) Separation phenomenon was not so remarkable at the vibration acceleration 520 cm/sec2 in the following combinations: granule+granule, fine granule+fine granule, granule+fine granule, and fine granule+powder. The separation was marked in the combination of granule+powder, disregarding the variation of vibration acceleration. The best distance between hopper and feeder was found to be 3 mm. Behavior of powders and granules in different particle size were measured at different vibration acceleration. The behavior on vibrating feeder may be affected by property of powders and granules, types and materials of feeder and hopper, and other factors. Therefore, these factors should be studied.

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