DRAIS advanced series DSA / M1
fully hydraulic
THREE ROLL MILL

Applications: Dispersing, refining, homogenizing, cooling and deaerating pastes of all kinds, for example, for the manufacture of paints and printing inks, artist's colors, coloring crayons, eye makeup, lip stick and skin care products, fine soaps, pigmented coating compounds, plastic pastes, marzipan, chocolate fillings, couvertures, shellac glazes, processed cheeses, etc.

System Advantages: Higher output rates and greater fineness through optimization of overall roller configuration. Centrifugally compound cast rollers, with hard surface of great depth. Automatically controlled intensive cooling system. Dynamic hydraulic system with optimum setting facilities. Swing lever roller mountings, affording accurate indication of pressure applied, which can be exactly reproduced. Machine of lightweight construction. Little floor space required. Simple operation and maintenance.

Machine frame
Inherently stable box type welded fabrication.
Attractive, streamlined appearance
Mounted on vibration dampers

Rollers
Centrifugally chill cast rollers, dynamically balanced, mounted on an inclined plane
Surface uniformly hardened to 525 HB (Brinell), to a depth of more than 15 mm.
Floating bearings
Central lubrication system for all self aligning ball bearings
Splash lubricated gear wheels

Roller cooling system
Enclosed design
Thermostat controlled Flowrate regulator for automatic control of working temperature Thermometer display for each roller

Roller adjustment
Dynamic hydraulic system with motorized pump. Operating controls and indicators conveniently grouped on a front panel, on the infeed side Preset working pressures: Gap adjusted by pressure applied by the feeding and middle rollers to the discharge roller in fixed position, according to the floating middle roller principle, with only two fine regulating valves or four regulators for individual adjustment of different pressures in the gap of the rollers. Pressure indication by pressure gauges. After working pressures have been preset, roller functions initiated by a single quick acting lever.

Feed Hopper
Demountable design
Pressure applied hydraulically to contact surfaces
Top-mounted bar for smoothing off the feedstock

Scraper Device
Discharge apron with scraper blade pressed hydraulically against discharge roller
Separate pressure indicator
Variable angle of adjustment of scrapper blade, which automatically clears the roller during the mixing operation

Operator Controls
10" touch screen operator interface for setting, controlling and monitoring machine parameters
PLC control for optimizing mill efficiency and functionality
Closed loop pressure and roll temperature systems for maximum repeatability.

Drive:
Drive to the rollers by a standard-speed three phase motor through vee belts; the hydraulic unit set is individually driven.

Safety Device:
Hydraulic overload protection to prevent roller damage
Emergency cutout switch on the discharge side of the machine and a safety yoke above the feed hopper
Finger guard as protective cover over the gap, when cleaning
Splash guards

Attachments:
Float operated switch controlling the level of feedstock in the hopper and for preventing dry running
Top mounting mixing vessel tilter with automatic interlock
Mechanical wide-gap roller adjustment for homogenizing at high throughput rates and for handling PVC pastes and similar heat sensitive feedstock.