UMP Universal Milling
The Mikro UMP Universal Milling System is designed to meet the multiple application needs of the pharmaceutical and food industries. Through the combination of a highspeed bearing assembly with a high turn down ratio and several different grinding elements the Mikro UMP Universal Milling System can meet the requirements rangin from coarse granulation to ultra fine grinding with particle size distribution control as well.
Principle of Operation
The Mikro UMP has a cantilevered bearing housing with gas-purged main shaft seals that eliminate the potential contamination of the product and main drive bearings. The smaller units are designed with a one-piece door and an articulated hinge mechanism and are secured with a single tri-clamp, providing a simple and clean design. (see Fig. Mikro UMP-B) Operators can quickly change grinding elements for different applications. The options for the Mikro UMP include; Pins for ultra-fine grinding, Impact Hammers for fine grinding or Knife rotor for coarse grinding and granulation. This new design can also operate cryogenically with liquid nitrogen injection.
Pin Disc:
The pin disc is of a singular unitary design. The rotor is made from one solid machined piece of stainless steel. The pins are hydraulically pressed into place, and the back of the disc is machined and polished to a uniform finish. Pin rotors produce the finest particle size achievable on the Mikro UMP Universal Milling System.
Hammer Rotor
The Hammer and screen option combines fine grinding with precise top-size particle control. This configuration will provide equivalent grinding performance to the standard Mikro Pulverizer. With this option, the grinding chamber can be provided with a multiple deflector liner designed to optimize grinding efficiency and an outlet screen to control residence time and top-size particle definition. Multiple screen types are available with different hole dimensions and open areas.
Knife Rotor
The rigid knife rotor option is offered where the production of a coarse or granular particle size distribution is required. The knife rotor is provided with dual impact surfaces: a knife-edge for true granulation applications and a flat impact edge when more size reduction is required.
Specifications
| Model | LPM-2 | UMP-B | UMP-1 | UMP-2 | UMP-3 |
|---|---|---|---|---|---|
| Motor（kW） | 0.75 | 1.5 | 5.5~7.5 | 15 | 40 |
| Grinding tool: Hammer & Screen（LFS） | |||||
| Rotor speed（rpm） | 36000 | 14000 | 9600 | 6900 | 4150 |
| Scale up factor | - | 0 | 1 | 4 | 8 |
| Air volume(m³/min) | 0.268 | 1.40 | 2.14 | 5.36 | 16.1 |
| Grinding tool: Pin Disc Rotor | |||||
| Rotor speed（rpm） | 36000 | 27500 | 18000 | 12000 | 9000 |
| Scale up factor | - | 0 | 1 | 2 | 4 |
| Air volume（m³/min） | 0.268 | 0.670 | 2.68 | 6.70 | 14.7 |
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