- InterProcess Sp. z o.o.
Anyone who has worked with poor-flowing materials knows this sentence — icing sugar, fibres, fine additives or hygroscopic pigments.
What is actually happening inside the chamber? Cohesive materials form a bridge — a stable arch above the discharge opening, leaving the dosing element (screw or spiral) with nothing left to convey. Or a narrow flow channel (rathole) develops, surrounded by a stationary ring of material stuck to the walls. The outcome is always the same: unstable throughput, pulsations, weighing errors and sometimes a complete stoppage of feeding. In the InterProcess DSL V (volumetric) and DSL G (gravimetric) feeders, the answer to these phenomena is an agitator working in the feed zone above the dosing element.
What exactly does it do? → Mechanically breaks up bridges before they have a chance to form → Eliminates dead zones along the chamber walls → Maintains a constant bulk density of material above the dosing element → Fills the dosing element to a consistent level — the foundation of repeatable feeding → Runs at a carefully selected speed so as not to aerate or segregate the material
The difference is measurable. In the DSL G gravimetric feeder, stable bulk density and repeatable filling of the dosing element translate directly into weighing accuracy in loss-in-weight mode. In the DSL V, we eliminate flow interruptions which, in volumetric dosing, would mean an incorrect dose in the finished product.
Why not a vibrator, a pneumatic knocker or aeration pads? Vibrators tend to compact the material and can often do more harm than good by changing its bulk density or blocking the feed. Aeration pads aerate the material and may cause it to flush uncontrollably out of the feeder. Knockers are not suited to the thin walls of feeders and do not deliver stable flow at all — they are better suited to emptying silos and hoppers, and for a weighing system with high-quality control they would be a serious challenge.
In short: the agitator is not an accessory — it is the component that determines whether the feeder runs stably and accurately with your specific material.
More about our feeders: Volumetric: https://interprocess.pl/en/volumetric-screw-feeders/ Gravimetric: https://interprocess.pl/en/gravimetric-screw-feeders/
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