MULTIGRAV®
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Catalog excerpts

MULTIGRAV® Feed Station % Loss-in-weight feed system consisting of one to five system modules % Simultaneous feeding of multiple ingredients for formation of homogeneous blends % Nominal feed rate per system module between 0.3 and 400 kg/hr % High feed accuracy and constancy (better than +/- 0.5%) % Compact design enables space saving installation % Easy and quick cleaning % Safe in operation and maintenance-free Application The MULTIGRAV® Feed Station is used for continuous feeding of granules in gravimetric mode. Typical scenarios are extruder and compounder plants in the plastics and chemical industries. Equipment The system module with weigh hopper and vibro feeder is optimally centered on a weighing module. Comprising a load cell insensitive to vibration, this module is connected with a bracket suitable for many applications (see Fig.: MULTGRAV® 1-Station feeder). For blending, two to five system modules are arranged on a joint bracket around a central blending hopper. The blending hopper, too, can be equipped with the above mentioned weighing module. Mounting and cabling of the individual components is done by Schenck Process, so that user’s connection via cabling box is simplicity itself. Thanks to the compact design of the individual system modules, the blending system has an extremely low headroom. Easy access has been ensured from the beginning. Functions Every single system module operates on the loss-in-weight principle (controlled loss in weight per unit time). The vibro feeder enables the material flow to be controlled gently and accurately with the use of a vibrating trough. Blending: The vibrating troughs feed the material into a blending hopper equipped with an insert specially designed for optimization of blend. The blending hopper also serves as buffer for the downstream process. The bracket is designed for highest protection from environmental influences. BV-D2021 GB

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System modules and hopper level are controlled by Schenck electronics tailored to the application. A host control system controls the formula as a function of blending hopper level. Through the interplay of individual functions, the blending system meets highest demands on feeding and blending quality. 1-Station feeder dimensions (mm) : MULTIGRAV® 1-Station feeder Weigh hopper Load cell Vibro feeder Bracket Weighing module

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2 to 4-Station feeder dimensions (mm): 5-Station feeder dimensions (mm):

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Technical Data Feed rate range (single feeder) 0.3 to 400 kg/hr max. 720 dm3/hr Recommended refill amount 12 dm3 Total feed rate (total of all single feeders) max. 550 kg/hr max. 1100 dm3/hr Material temperature Ambient temperature max. 100°C max. 50°C Material Granules Moisture max. 0.5% Grain size 0.5 to 5 mm Accuracy +/- 0.5% (typical) Bulk density range 0.3 to 0.8 kg/dm3 Feed constancy +/- 0.5% (typical) Flow properties free flowing, non- sticky Supply voltage 230V AC, max. 8A For electrical data of Mechatronic variant, see Spec Sheet DISOCONT BV-D2051. Schenck Process GmbH...

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