For gravimetric feeding of granules and free flowing bulk ingredients in the secondary plastics industries and in compounding processes Brabender Technologie has developed a ScrewDisc Feeder featuring a very special metering principle offering remarkable advantages. The design features a vertical metering screw mounted on a rotating disc. These are arranged in a specially shaped outlet mode of conductive polyurethane, which is transparent for visual inspection. A tubular PUR insert slipped on the screw serves as a screw tube. The entire unit as a whole is the actual metering feeder. lt is connected with a component part carrier via a lowering mechanism, which includes the load cell and also supports the storage hopper. The carrier is optionally included or provided by the customer. Convenient handling is ensured by the well thought-out ThreeFlex system allowing quick recipe changeover without tools in just three work steps (lowering, cleaning, ingredient changeover).
The vertical arrangement results in reliable solid flow and a constant screw filling level of virtually 100 %. ScrewDisc Feeders feature a turndown ratio of 100 : 1 and offer pulsation-free discharge over the entire feed rate range due to optimum grain distribution around the circumference of the disc. With two models covering feed rates up to 5000 dm³/h, ScrewDisc Feeders are available as loss-in-weight feeders or as multi-feeder installations of up to eight feeders on a commons base structure.
Hall 6.0, Booth G18
cpp 439
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