Patent ID: 9291489
Filing Date: 2016-03-22
CPC Classification: G01F,G01G

Claim Text:
1. A method for the gravimetric mass metering of bulk solids via a container with the bulk solid to be metered and a volumetric conveying device, with which the bulk solid coming from the container is conveyed with a mass flow, whereby the mass flow temporally follows a target value for a target feed rate, wherein to determine the mass flow the method comprises: determining, by a weight determining unit, a signal that represents a total weight of a unit formed by the container and the bulk solid included in the container or by the container and conveying device and the bulk solid included in the container and the conveying device, processing the signal representing the total weight in order to calculate a first signal representing the mass flow, calculating, by a first regulating device, a first control signal based on the first signal and the target value for the target feed rate, measuring, by a mass flow measuring device, a second signal that represents the mass flow that leaves the conveying device; calculating, by a second regulating device, a second control signal based on the second signal representing the mass flow and the first control signal; and providing the second control signal to a drive of the conveying device for controlling the conveying device, wherein the second signal representing the mass flow is supplied from the mass flow measuring device directly to the second regulating device.