Technical Overview
This mill is a widely used and standard solution for grinding a variety of materials. The grinding takes place in a highly turbulent air stream, beginning from the centre and moving outward due to centrifugal force. This allows the material to experience uniform grinding against classifier screens mounted peripherally.
The centrifugal action ensures constant circulation of material, keeping it in motion within the grinding zone until the desired fineness is achieved. Once the particles are fine enough, they are carried to the outer section by the air stream and discharged. Coarser particles stay in the system for further grinding. The end product is air-cooled and collected from the periphery.
Efficient and User-Friendly Operation
Premium Pulman Universal Mills are optimized for energy efficiency, consuming significantly less power while offering higher output compared to conventional mills. This is achieved through:
- Use of bar-type rotating blast rotors and easy-to-maintain stators.
- High-speed tip operation, delivering finer results.
- Improved airflow and suction performance.
Product Series Available:
- A. Junior Series: Compact, simple, and easy to maintain.
- B. Senior Series: Equipped with auto feeding and collection systems, suitable for large-scale operations.
Technology Highlights
Premium Pulman Universal Mills are designed to grind a wide range of materials to desired particle sizes using:
- Three types of blast rotors.
- Two types of classifier stators.
- Integrated grinding, screening, and classification mechanisms.
Rotor Types:
- Bar-Type Blast Rotor (A)
- Straight bars generate high turbulence and pressure.
- Ideal for medium to coarse grinding.
- Commonly used in the Junior series.
- Plate-Type Blast Rotor (B)
- Combines impact and shearing forces.
- Suitable for medium to fine grinding.
Classifier Stators:
- C. Full Screen Classifier Stator
- Circular rings with tensioned wires, held in place with screws.
- Allows even airflow and supports precise sizing.
- Used when higher fineness is needed.
- D. Semi-Screen Classifier Stator
- Combines full-screen and plain segments.
- Designed for rough classification and dust extraction.
- Ideal for coarser, high-throughput applications.
Operating Mechanism
- Material is fed through a screw feeder, driven by a variable-speed motor.
- The grinding chamber features a dynamically balanced rotor and various stator options to control particle size and shape.
- Ground material is classified via air current and screens, then collected with the help of a blower.
- Finer models can include dust collectors and automatic collection arrangements.
Junior Series Premium Pulman Universal Mills
- Designed for small to mid-scale applications.
- Available in sizes ranging from 80 mm to 300 mm.
- Comes with a stand and air blower as standard.
- Options for air classification and mechanical sieving available.
- Models include bottom discharge and various screen configurations.
Offered in stainless steel construction for specialized applications
Technical Specifications
| Model | Rotor Dia MM |
H.P | APP WT. | Capacity KG/HR. |
Space Required | ||
|---|---|---|---|---|---|---|---|
| Main M/C. | Screw Feeder |
KG HR. | LXW XH | H 1 | |||
| PUM SR 500 | 480 | 15 | 1 | 200 600 | 600 | 1410 x 1250 x 1610 | 1010 |
| PUM SR- 625 | 625 | 25 | 1 | 400 800 | 1050 | 1500 x 1400 x 1775 | 1175 |
| PUM SR- 750 | 750 | 50 | 1 | 600 1000 | 1400 | 1600 x 1500 x1900 | 1285 |
| PUM SR- 900 | 900 | 75 | 1 | 800 1500 | 1650 | 1800 x 1700 x2100 | 1510 |
| PUM SR- 1000 | 1000 | 100 | 1 | 1000 2500 | 1850 | 1800 x 1800 x 2250 | 1650 |
Senior Series Premium Universal Mills
These Mills Are In Bigger Diameter Ranging From 500 Mm Ø To 1000 Mm Ø, H.p Of Main Motor Will Depend Upon Model, Capacity, Fineness Of End Product And Type Of Material.
These Mills Are Provided With Screw Feeder For Uniform And Regulated Flow And Are Suitable Either For Mechanical Discharge/conveying Or Pneumatic Conveying Depending Upon This Cyclone Collector And Dust Collector And Air Lock Is Provided For Dusty And Pungert Material Reverse Pulse Air Jet Dust Collector And Aspiration System Is Recommended Technical Specification Are As Under
Technical Specifications
| Model | Rotor Dla MM | H.P | Capacity KG HR. | APP WT. KG. | Space Required L XW XH |
|---|---|---|---|---|---|
| PUM JR-160 | 160 | 2.0 | 5 50 | 70 | 500 x 525 x 600 |
| PUM JR- 200 | 210 | 3.0 | 25 100 | 125 | 550 x 575 x 700 |
| PUM JR- 250 | 260 | 5.0 | 50 200 | 170 | 575 x 625 x 800 |
| PUM JR- 300 | 310 | 7.5 | 100 400 | 250 | 675 x 700 x 1000 |