Research Grant Report
Study on Powder-Supplying Device Using a Piezoelectric Disk
2005 Volume 13 Pages 106-110
Details
2005 Volume 13 Pages 106-110
A powder-supplying device using the bending vibration mode of a piezoelectric disk with a twostep cylindrical projection at its center is described. The device has simple structure by which powder on the surface of the vibrator flows out the tip of the projection. Two degeneration modes of B11 vibration of the disk were considered.
The structure of the vibrator and the vibration mode by FEM are shown. Two kinds of powder were tested in the study, one is fly-ash (Dp50=15μm), the others are several kinds of white fused alumina and their powder-supplying characteristics were measured. The results show that the device can supply the powder composed of its particle size smaller than the size of 10 μm at flow rate of less than 1mg/s.
