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6/24/2011 | 1 MINUTE READ

Double planetary mixer

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Charles Ross & Son Co. has introduced Ross Double Planetary Mixers that now incorporate more clean design features to help users improve the efficiency of high-viscosity mixing processes.

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Charles Ross & Son Co. (Hauppauge, N.Y., USA) has introduced Ross Double Planetary Mixers that now incorporate more clean design features to help users improve the efficiency of high-viscosity mixing processes. Traditionally equipped with rectangular-shaped paddles, double planetary mixers move batch material by rotating the blades on their own axes while they orbit on a common axis. At elevated viscosity levels, certain products tend to climb the rectangular stirrers and out of the mix vessel. This characteristic migration of batch material reduces mixing efficiency, necessitates intensive clean-up and can increase contamination risks. High-viscosity (HV) blades offered on these new mixers feature an angled helical contour that generates a vertical mixing action: the sweeping curve firmly pushes the batch material forward and downward, keeping it within the mixing zone. Enhanced control over batch level can significantly improve mixing efficiency and shorten cycle time, while ensuring easier clean-up and product purity. The HV blades also reportedly extend the viscosity range of the double planetary mixer to approximately 6 million cP. Other features include highly polished stainless steel 316 wetted parts, labyrinth style gearbox sealing arrangement, double lip seals on each stirrer shaft, dust shield, flush-mounted discharge valve and platen-style discharge system. Optional surface coatings, rotating and sidewall thermocouples, vacuum pump, level sensors and PLC controls can also be supplied. Standard sizes range from 0.5 pint through 750 gallons.

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