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Ross Double Planetary Mixer Designed for Viscous, Air-free Formulations

The Ross Model DPM-200 has a working capacity of 50 to 200 gallons.

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By: DAVID SAVASTANO

Contributing Editor, Coatings World and Ink World, Coatings World and Ink World Magazine

The Ross Double Planetary Mixer is ideal for single-pot mixing and deaeration of viscous formulations such as thick pastes, putties, gels and other semi-solid products. Equipped with the patented “HV” (High Viscosity) blades, the Double Planetary Mixer can process highly filled and high density applications up to 6 million centipoise in viscosity.
 
The Ross Model DPM-200 has a working capacity of 50 to 200 gallons. This heavy-duty mixer features a specially fabricated high-precision gearbox enabling very quiet operation as well as reduced wear and tear. For easy clean-up, the stainless steel wetted surfaces are 150-grit finish and electropolished. Unlike horizontal kneaders also designed for high viscosity mixing, the Double Planetary Mixer has no packing glands or bearings submerged in the product zone. To further minimize contamination and cleaning, a dust shield prevents product dust and splash from getting into the gearbox.
 
Driven by a 75HP explosion-proof inverter-duty motor, the planetary HV blades orbit the vessel at 7 to 30 rpm while rotating on their own axis between 10 and 40 rpm. A detachable sidewall scraper arm is supplied for sticky applications. A dual-post hydraulic lift with safety locking mechanism raises/lowers the agitators from/to the mixing position. The mixer’s change can design allows the use of multiple vessels: two 200-gallon mix cans supplied with the DPM-200 include a 50-psig dual-zone spiral baffled jacket, glass wool insulation, stainless steel sheathing, RTD thermocouple, caster wheels and tow hitch.
 
Air-free mixtures are produced in the DPM-200 via a built-in vacuum system which brings the mixing zone down to 29.5”Hg vacuum. Operators can view the batch through 4” sight ports, and a 12” x 20” bag dump port with safety grating on the back side of the mixer cover facilitates convenient charging of bulk raw materials.  
 

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