Screw conveyors are designed for transportation of dust, loose and small piece material in horizontal or leaning against level direction. They can receive transported material from the hoppers, discharge containers, containers or conveyors and feed it to other discharge devices or containers.
Screw conveyors are manufactured in two basic versions: trough (open system) and pipe (closed system). In reversible version the screw conveyor enables transportation of the material in both directions. Changing direction of flow is done by changing the direction of the screw rotation.