Highest productivity ... lowest downtime ...

Schold’s HSSM is a sealed, high-speed, continuous small media mill designed for deagglomerating, dispersing and milling a wide range of materials, including paints, inks, dyestuffs, adhesives, food, pharmaceuticals and other similar fluids.

Operating under internal pressure, the HSSM can handle materials with high viscosities or thixotropy, as well as moisture and air-sensitive materials. The problems of solvent losses and product drying on the filter are eliminated and higher production rates become possible, as opposed to open mills, ball or pebble mills and, in many instances, three-roll mills.

Since the grinding mill is removable, rapid color or media changes can be effected through the use of a spare chamber.

How it operates:

The material being processed is pumped into the bottom of the grinding chamber by the feed pump. A variation of the pumping rate will determine the dwell time of the product in the mill and the degree of dispersion.

As the product is forced upward, it passes through the grinding media where it is fluidized by the velocity and agitation. At the same time, milling occurs through a combination of rubbing and impingement between adjacent media particles, and between the media and the agitator discs and the chamber wails.

At the top of the milling area is the drop-out-zone where there are no agitator discs and where most of the grinding media settles back into the milling area.

The continually rising, ground product then passes through the mill filter where any remaining media is final-filtered from the finished product.

product being processed, its viscosity and the desired throughput rate.
( 7) The variable speed feed pump includes base with strainer and pressure gauge.
( 8) In the Schold design, the pressurized seals are located downstream from the patented mill filter. As a result, they need only to be regulated against discharge pres¬sure... not mill chamber pressure... regardless of the pressure in the milling chamber. Thus, complicated and expensive safety devices to reduce seal damage are eliminated and seal life is extended significantly.
( 9) The double mechanical seals are equipped with pressure gauge and regulator for pressurizing with plant air, and an air check valve is also provided to allow continu-ing operation in case of plant air failure.
(10) The seal/bearing housing is designed to automatically tension the seals on assembly and provides easy ac¬cess without having to remove the chamber on the mill. Seal face replacement, if necessary, is fast and eco-nomical, also.
(11) A motor torque limiter is included to aid in cold start-up.

***WARNING SAFETY STATEMENT***
As in all machinery, it is imperative that proper safety procedures training and supervision should be maintained.

Under no circumstance should the machine be cleaned, wiped, maintained or tampered with while shafts are rotating or with electrical power connected.

Electrical hardware, connections, wires and floor mountings must be periodically checked and, if necessary, repaired.