Back to PMD Variable Capacity Disperser
 The PMD-VC is used for mixing and dispersing large volume batches of solids into a liquid. This design integrates the high shear disperser, low speed tank scraper, vessel cover and vessel as one, self-contained unit.
The high shear disperser (HSD) is fitted through the vessel cover. The low speed agitator (LSA) is fitted through the vessel bottom. The HSD has a hydraulic raise and lower assembly that allows the disperser shear zone to traverse vertically through the batch.
The LSA, operating independently of the HSD, moves the batch material from the vessel walls towards the high shear zone. This is important on high viscosity materials where circulation is not pronounced. The LSA increases the efficiency of heat transfer by providing continual movement of product away from the jacketed vessel wall (eliminating product thermal barriers).
Reduction in energy per working volume is achieved by the LSA providing circulation of the product (typically accomplished by an oversized HSD motor), resulting in lower process temperatures and reduced power consumption. The cooling capacity of the PMD-VC is further enhanced by the cone-shaped vessel which, by design, positions the cooling surface much closer to the energy zone created by the high speed blade.
Unlike competitive machines where both low and high shear dispersers are fitted through the top, the PMD-VC provides smooth operation. The PMD-VC cover allows more room for other uses such as additive ports, manways, electrical devices and cleaning equipment. PMD-VCs up to 2,500 liters in size are supplied as standard with a single speed, directly driven motor and a single speed motor, belt-driven shaft for machines over 2,500 liters. Single speed is normally used for easy-to-disperse products that are then discharged into a further process, ie, tinting or filling.
|
|
| In this Section |
|
|
 |
| Customer Services |
|
|
|
Applications 
