| 摘要 |
Dispensing a particulate product (e.g. powder 4 or granulated materials, beads, etc) from a vessel 1 through an outlet 2 therein by rotating the vessel about a pivot (e.g. shaft 3) so that the outlet rotates towards and away from a downward-facing position. The vessel may be rotated to and fro between two downward orientations and may accelerate away from and decelerate towards each. It may periodically be rotated to an upward orientation e.g. decelerating towards the upward orientation and/or rotating to and fro between two upward orientations - so as to agitate the powder whilst the outlet is facing upward, thus breaking any powder bridges. The powder may be collected in a receptacle (102, Fig.2) on balance (103, Fig.2) to measure the amount or rate of dispensed powder and control the rotation accordingly so as to dispense a target amount of powder. The rotation generates less interference to the balance than electro-magnetic or pneumatic tapping actuators. |
