This low maintenance feeder can minimise the roll wear of the machines main rolls and allows even dosing of non-homogeneous products or products with the tendency to agglomerate.
Product is dosed volumetrically with both versions of the WSV and deagglomerated simultaneously, either between two grooved rolls or between a grooved roll and a slanting plate. All product contacted parts are made of stainless steel. The main components are two grooved rolls or one grooved role with a slanting plate and an upstream dosing valve. The roll speed as well as the gap between the rolls allows a continuous adjustment of the feed rate. A closed gap between the rolls or a closed dosing valve ensures a complete stop of product feed, allowing a secure stop of the roller mill. The gap is pre-adjusted mechanically, during operation it is opened and closed pneumatically with the start/stop of the machine to avoid product feed to the machine after stopping the main rolls.