Method for producing individual dosing quantities via a drum dosing device

A method for producing individual dosing quantities of a powdered product via a drum dosing device, wherein the drum dosing device includes a product supply, a dosing drum, and a measuring device for the mass determination of the dosing quantities, wherein the dosing drum defines at least one dosing opening on a peripheral side thereof, wherein the at least one dosing opening is delimited on an inner side via a filter element and a partial vacuum can be applied thereto through the filter element, the method comprising the steps of:

• in a filling position, filling the at least one dosing opening with a partial quantity of the powdered product from the product supply;
• in the filling position, applying the partial vacuum to the at least one dosing opening through the filter element, wherein a dosing quantity of the powdered product forms in the at least one dosing opening;
• rotating the dosing drum until the at least one dosing opening filled with the dosing quantity is located in an ejection position in which the dosing quantity is ejected out of the at least one dosing opening;
• further rotating the dosing drum until the emptied at least one dosing opening is again located in the filling position;
• cyclically repeating the above steps multiple times, wherein individual masses of multiple ejected dosing quantities are sequentially determined via the measuring device;
• forming a mass mean value from the determined individual masses of the multiple ejected dosing quantities, comparing the mass mean value to a predetermined inner target mass range, and using the mass mean value for a tendency regulation as follows:
• if the mass mean value formed is within the predetermined inner target mass range, the level of the partial vacuum acting on the at least one dosing opening in the filling position remains unchanged, and the above formation of a mass mean value begins from the beginning;
• and,
• if the mass mean value formed is outside the predetermined inner target mass range, an adapted partial vacuum is ascertained in such a way that in the case of excessively low mass mean value, the level of the partial vacuum is increased, and in the case of excessively high mass mean value, the level of the partial vacuum is decreased, and the adapted partial vacuum is applied to the at least one dosing opening in the filling position.