Working mechanism of powder DOSER

Could you give me some more details on the feeding mechanism? Is there a motor (pump) turning to open a gap through which the powder is fed? Is there any part of the system kind of “pushing” the powder out to be supplied?

The motor of the driving unit is controlled with quartz-driven electronics, similarly as it is done in electronic watches. The powder distributor is of an open spiral type (not a screw type as is sometimes used in other systems and can lead to the compacting and blocking of the dosing screw). This spiral takes the powder and pushes it to the centre where it falls out of the dosing unit.

On the following website you can see a video of the powder dosing system: I hope this will help you to understand better.