Hapman
The Helix Hi/Lo flexible screw conveyor (photo) is designed for handling sluggish or non-free-flowing materials without the need for separate in-hopper agitation. The system encourages discharge of sluggish solids with an optional mass-flow hopper with a steep conical shape, and optional external vibration. The Helix is ideal for materials with high moisture content. The unit conveys material to heights of up to 12 ft and at rates up to 25 ft3/min. — Hapman, Kalamazoo, Mich.