Feeder unit, a feeder module comprising a plurality of feeder units, and method for discharging a constant mass flow of one or more powders into a receiving container

摘要

A feeder unit (2) comprising a storage hopper (21), a weighing cell (24), a conveyer (22), and a discharge end (23), wherein the storage hopper is adapted to be connected to a refilling system, and the discharge end (23) to a receiving container. A working space (ws) is defined by the aritmethic product of the dead weight (dw) of the feeder unit (2) and the refilling interval (ri), such that the working space (ws) is below 0.2 kgh. Furthermore a method method for discharging a constant mass flow of one or more powders into a receiving container is defi ned.