Device for automatically controlling the throughput during the two-stage comminution of brittle materials

摘要

In a two-stage comminution of brittle materials with a milling system as a second stage, a double-roller machine being connected in front of it as a first stage, in order to match the throughput of the double-roller machine to the throughput of the milling system which is decisive for the entire process and which can vary as a result of operational fluctuations or product changes, according to the invention a control device is proposed which is characterised in that the double-roller machine has connected in front of it a metering belt weigher with a controller which is connected to the controller of the milling system via a signalling line, from which controller the set value of the mass flow rate for the controller of the metering belt weigher is obtained so that without disturbing the actual control of the milling system the throughput of the double-roller machine is always exactly matched to the throughput of the milling system connected downstream.