Tooth Disc Pulverizer
1. Product Overview
1.1 General Description
The tooth disc pulverizer grinds material by shearing, impact and friction generated by the relative motion between the rotating and stationary toothed discs. As the rotating disc spins at high speed, its teeth interlock with those of the stationary disc, and the material is ground by the intense shearing and impact between the teeth. The tooth disc pulverizer is particularly suitable for fibrous materials and materials with a higher oil content, such as Chinese herbal medicines, chemical raw materials and agricultural products. The ground material is discharged through the bottom screen with a uniform, adjustable particle size. The machine is compact, made entirely of stainless steel and complies with GMP standards.
1.2 Key Features
- High grinding efficiency from double-sided shearing between the rotating and stationary discs
- Particularly suitable for fibrous and oily materials
- Uniform, adjustable discharge size controlled by the screen
- All-stainless-steel construction in compliance with GMP
- Compact structure with a small footprint
- Simple operation and easy maintenance
- Air/water cooling prevents excessive temperature
- Low noise and low vibration
1.3 Document Scope
This technical specification covers the design principles, performance parameters, system classification, selection of core components, application fields, design standards and certifications, custom optional configurations, warranty terms, packaging and delivery, and the information required for inquiries of the tooth disc pulverizer, serving as a comprehensive reference for procurement selection and engineering communication.
2. Working Principle
2.1 Tooth Disc Pulverizer Process Flow
Tooth disc pulverizer process flow: feeding → material enters the grinding chamber → high-speed rotation of the rotating disc → shearing and impact between interlocking teeth → material is ground → discharge through the screen → pneumatic collection. Material enters the grinding chamber through the feed inlet, where the teeth on the rotating disc (speed 3000-5000 rpm) interlock with those of the stationary disc and subject the material to intense shearing, impact and friction. The fine powder is discharged through the bottom screen, while coarse particles remain in the grinding chamber for further grinding. The air- or water-cooled design prevents excessive grinding temperatures from affecting product quality.
3. System Classification
| Classification | Typical models | Parameter range | Applications | Key features |
|---|
| Small | CPC-250, CPC-350 | Disc diameter 250-350 mm | Lab/pilot scale | Bench type |
| Medium | CPC-450, CPC-550 | Disc diameter 450-550 mm | Production | Floor-standing |
| Large | CPC-650, CPC-800 | Disc diameter 650-800 mm | Large-scale production | With air cooling |
4. Technical Parameters
4.1 Main Technical Parameters of the Tooth Disc Pulverizer
| Parameter | CPC-250 | CPC-350 | CPC-450 | CPC-550 | CPC-650 | CPC-800 |
|---|
| Disc diameter (mm) | 250 | 350 | 450 | 550 | 650 | 800 |
| Capacity (kg/h) | 30-80 | 60-150 | 120-250 | 200-400 | 350-600 | 500-1000 |
| Motor power (kW) | 2.2 | 4 | 7.5 | 11 | 15 | 22 |
| Speed (rpm) | 5000 | 4500 | 4000 | 3500 | 3000 | 2500 |
| Grinding fineness (mesh) | 20-120 | 20-120 | 20-120 | 20-120 | 20-120 | 20-120 |
| Weight (kg) | 80 | 150 | 280 | 450 | 700 | 1100 |
4.2 Dimensions and Weight
| Model | Length (mm) | Width (mm) | Height (mm) | Net weight (kg) | Footprint (m²) |
|---|
| CPC-250 | 500 | 400 | 800 | 80 | 0.2 |
| CPC-350 | 600 | 500 | 900 | 150 | 0.3 |
| CPC-450 | 700 | 550 | 1100 | 280 | 0.4 |
| CPC-550 | 800 | 650 | 1200 | 450 | 0.5 |
| CPC-650 | 900 | 750 | 1400 | 700 | 0.7 |
| CPC-800 | 1100 | 900 | 1600 | 1100 | 1.0 |
5. Applications
| Application field | Typical materials | Special requirements | Representative products |
|---|
| Pharmaceutical | Chinese herbal medicines/roots and rhizomes | Suitable for fibrous materials | Licorice/astragalus |
| Food | Spices/seasonings | Food grade | Star anise/Sichuan pepper |
| Chemical | Resins/rubber | Low-temperature grinding | Epoxy resin |
| Agricultural products | Grains/beans | High output | Corn/soybean |
| Feed | Additives/premixes | Uniform fineness | Trace elements |
6. Core Component Selection
| Component | Function | Material | Selection notes |
|---|
| Rotating disc | Shears material at high speed | SS304 | Tooth shape and count affect grinding |
| Stationary disc | Cooperates with the rotating disc for shearing | SS304 | Gap to the rotating disc 0.5-2 mm |
| Screen | Controls the discharge size | SS304 | Replaceable mesh 20-120 |
| Main shaft | Drives the disc | 40Cr | Dynamic balancing required |
| Cooling system | Lowers temperature to prevent overheating | Water-cooled jacket | Temperature rise ≤30℃ |
| Housing | Contains the material | SS304 | Polished inner wall, easy to clean |
| Feed hopper | Feeding | SS304 | Fitted with a control gate |
| Collection system | Collects the product | Stainless steel/bag filter | Cyclone + bag dust collection |
7. Design Standards and Certifications
| Standard/Certification | Scope | Compliance | Certificate/Report |
|---|
| Relevant GB/T standards | Design and manufacture | Fully compliant | Type inspection report |
| GMP (cGMP) | Design, manufacture, documentation | Fully compliant | GMP compliance certificate |
| ISO 9001:2015 | Quality management system | Certified | ISO 9001 certificate |
| CE certification | Machinery safety/EMC | Optional | CE declaration of conformity |
| FDA | Food-grade/pharmaceutical-grade | Optional | FDA compliance documents |
8. Custom Optional Configurations
| No. | Custom item | Options | Default | Impact on delivery |
|---|
| 1 | Tooth profile | Pointed/flat/serrated | Pointed | Custom +1 week |
| 2 | Cooling method | Air/water/none | Air | Water +1 week |
| 3 | Material of construction | SS304/316L | SS304 | 316L +1-2 weeks |
| 4 | Dust collection | Bag/cyclone/combined | Bag | Combined +1 week |
| 5 | Control | Push-button/PLC | Push-button | PLC +1 week |
9. Material Property Requirements
| Material characteristic | Requirement | Remarks |
|---|
| Working temperature | -40~250℃ | Depends on the seals and materials |
| Corrosiveness | Mild to moderate corrosion | 316L or lining required for strong corrosion |
| Explosion protection | Selected according to the site | Zone1/Zone2 different levels |
10. Warranty Terms
| Warranty category | Period | Coverage | Conditions |
|---|
| Main equipment warranty | 12 months | All components included | 12 months from successful commissioning |
| Extended warranty (optional) | 24 months | Same as the standard warranty | Must be purchased with the order |
| Wear parts warranty | 6 months | Seals, bearings, etc. | Normal wear excluded |
11. Packaging and Delivery
| Item | Details |
|---|
| Standard lead time | 6-10 weeks after order confirmation |
| Custom configuration lead time | 10-16 weeks |
| Incoterms | FOB Shanghai / CIF / DAP |
| Packing | Export wooden case |
| Shipping | Container or break-bulk vessel |
12. Information Required for Inquiry
| No. | Information required | Description/Example |
|---|
| 1 | Material name and characteristics | Fiber content/oil content/hardness |
| 2 | Feed size | mm |
| 3 | Discharge fineness | mesh |
| 4 | Capacity required | kg/h |
| 5 | Temperature sensitivity | Yes/No |
| 6 | Material requirement | SS304/316L |
| 7 | Cooling requirement | Air/water |
| 8 | Installation conditions | Space/power |