:: Dual Drive Coaxial Disperser ::

(Conventional or Hydraulic Drive)

For mixing and dispersing

SCHOLD Dual Drive, Dual Motor, VHLS Coaxial Dispersers are designed for mixing and dispersing products with a wide range of high viscosities in excess of 1,000,000 CPS. Inks, caulks, flush pigments, paints, dyestuffs, epoxies, texturizing compounds, putties, adhesives, and resins are typical of the wide product range capability. Yet, this disperser design allows you to handle those jobs normally requiring a high-speed disperser, too. And, in many cases, it replaces more expensive sigma blade mixers, cone/worm mixers, and ribbon blenders.

SCHOLD Dual Drive Coaxial Dispersers are actually 2 machines in 1! That's because they combine a slow-speed, high-torque blade... closely matched to the inner diameter of the mixing vessel... with a high-speed, high-shear blade in a "Coaxial" position. The nominal speed range of the slow speed blade is 20 to 115 RPM. The range of the high-speed blade is 400 to 2000 RPM.

Two independently adjustable agitator shafts on a common axis work through a common vortex, making it ideal for dispersing high-viscosity materials. Dead spots, experienced with twin-shaft machines, are eliminated.

Because of out dual drive, you have infinite adjustment of shaft or agitator RPM or FPM without compromising the power draw from one blade to the other. Through constant monitoring of the maximum amperage draw on each motor, you can achieve the fastest dispersion possible... from 1/3 to 1/2 the time normally required by other, conventional dispersion methods.

And even more important is your end product. The close spacing between the slow-speed blade, the vessel wall, and bottom assures complete dispersion, free of any lumps normally left in the corners or on the vessel walls.

Further, the two blades can be engaged or disengaged at will, allowing the Dual Drive Coaxial Disperser to be used as a slow-speed, high-torque mixer for dry ingredients with minimum dusting, or as a high-speed disperser alone.

One Dual Drive Coaxial Disperser can be used with a wide range of vessel diameters, too... up to 84", simply by changing (optional)blades, and (optional)adjusting the tub holder to center the mixing vessel.

How it operates:

The slow-speed blade of the Dual Drive Coaxial Disperser is unique because it creates a triple vortex. The opening in each slow-speed vane creates a separate vortex while rotating over the dynamic high-speed shear blade. This condition insures a more uniform dispersion in less time.

As the product is forced to flow down each vortex created by the void in each vane, it is subjected to the intense shear created by the high-speed blade, resulting in very rapid dispersion. Fresh product is continually forcing the dispersed material away from the high-speed blade, thus assuring uniform dispersion without localized heat build-up, helping to control uniform batch temperatures.

50-20 HP Dual Drive Twin Shaft Disperser, shown with slow speed blade to dismed bottom.

60-30 HP Dual Drive Top Seal Vacuum/Pressure Coaxial Disperser with vacuum/pressure vessel; Cooling/heating jacket; Liquid ring vacuum pump; and remote hydraulic valve stand.

60-30 HP Dual Drive Top Seal Vacuum/Pressure Coaxial Disperser with scrapers shown; Vacuum lid and charge hatch.

50-20 HP Dual Drive Disperser variable speed drive for sweep blades and wall scrapers.

150/75 -60 HP Dual Drive Top Seal Tank Mounted Disperser with two-speed motor and variable speed drive for sweep blades; Wall scrapers; 20" Rotor Stator high-energy dispersion option; Hydraulic remote controls for Vari-Drive.

5-3 HP Dual Drive Top Seal Laboratory Vacuum Disperser with vacuum lid; Ports and hatch; and wall scrapers.

Additional Hydraulic Drive features:

• Lower RPM operation with higher torque Water or air cooled
• Extremely high accuracy of speed and rise Lower noise level
• More energy-efficient operation Remote controlled
• Easy "dial-in" selection of speed and torque Pressure and load sensing
• Wider speed range capability Ganged power pack enables adding mixers 

Note: Standard equipment includes your choice of 12 3/4" or 16" single hydraulic columns with single or multiple positioning. Side and bottom tub scrapers are also available.