The DLF Belt weigh feeder
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FEEDING - WEIGHING • WEIGH BELT FEEDER model DLF • The DLF weigh belt feeder extracts a product from a feed chute through the constant cross-section and according with a fixed reference flow-rate (set point), adjusts the extracted volume by varying the belt speed in such a way as to keep a constant weighted flowrate. The DLF weigh belt feeder was designed by Sautelma Rotolok especially for the free and very free flowing materials. The belt conveyor is extended to incorporate the calming chamber where the material is slowed down and de-aerated. The material level in the calming chamber (chute) is kept constant by controlling the flow of the filling system which can be a rotary valve, a vibratory feeder, a motorised plug valve or a screw feeder. The weight of the material on the belt length called "weighing length" is measured by a Strain gauge load cells weighing system. The belt speed is measured by an incremental encoder and adjusted by a variable speed gear motor. The DLF weigh belt feeder can also be used as a continuous weigher for troughput and consumption measurement or as a charge preselection (batche) feeder. The DLF weigh belt feeder consist of three main parts : * A belt conveyor mounted on a support • A weighing device and a belt speed trans- • An electrical and electronic control frame ducer and regulating system Sturdy metallic frame, designed for fast cement, Automatic constant belt tension, belt selfcentering idler, external and internal belt cleaners with scrapers AVANTAGES • Machine completely closed and very clean when de-dusted • Troughput of up to 1000 metric tons/hour • Easy feeding and handling of very free flowing materials • Fast and easy lateral belt remplace-ment • Very extensive range of flow-rates, from 1 to 30 • High weighing and feeding accuracy : +/- 0.5%

• The DLF weigh belt feeder is used for the continuous weighfeeding of • Building materials : Feeding of plaster, lime, clay, dry sand all free and very free flowing materials. • Cement industry : Feeding of raw mill farina to the ciln, pulveri- f) Plastics industry : Feeding of polyethylene and polypropylene sed coal and pulverised trass granules • Chemical industry : Feeding of dry crushed phosphate, pulverised • Aluminium : Feeding of pulverised (fine) petrol coke, pitch, lime clay DIFFERENT SUPPLY CONFIGURATIONS • Weigh belt feeder placed under the screw conveyor. Recommended for...