Method for the gravimetric control of a metering device for bulk material during the refilling of its storage container, and metering device for carrying out the method

Abstract

The method according to the invention provides that the gravimetric weighing is to be continued during the refilling of a gravimetric metering device (1) for bulk material, in addition the refilled bulk material mass is to be determined during refilling via a refilling container (3) in order to determine in real time or on average the actual mass flow which is output during refilling and to control it with regard to a desired mass flow.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 for regulating the mass flow of a dosing device (Dosierer) for pouring material (Schuettgut) and a method according to the preamble of claim 12 Dosing equipment for carrying out the method. Background technique [0002] Gravity dosing devices, also known as differential dosing weighing devices, are widely used and are used in many branches of industry for all possible pourable materials, that is to say poured materials, as long as they are fully capable of being transported by gravity Type dosing equipment delivery. In this case, the pourable material enters the storage container and is then metered out of the storage container via the output conveyor. The dosing device is located on the weighing device, whereby the weight recorded by the weighing device is the gross weight, that is to say the known and constant weight (tare weight) of the parts of the dosing device plus the weigh...

AI Technical Summary

Problems solved by technology

[0008] Volumetric conveying has the disadvantage that, in contrast to gravitational control, the fluid dynamic behavior of the pouring mass moving through the refill and dosing element itself cannot be detected, ie the volumetrically controlled pouring mass flow is in principle not adjustable , except for adjustments only to the rotational speed of the conveying screw or the operating speed of the output conveyor

But it has neither proposed what kind of data this could be, nor can it fully detect the data at the exit of the dosing equipment

In particular, the gravitational metering principle overcomes precisely the problem that the throughput in kg / h in the case of an outgoing pouring material flow is only measured with considerable effort, which would also mean that downstream of the metering device Additional measuring stations must be set up

Furthermore, it is still not clear how the adjustment model must be constructed for the next refill if the data at the outlet of the metering device can actually increase

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