
Ploughshare Mixer
1. Product Overview
1.1 General Description
The ploughshare mixer is a high-efficiency machine for mixing powders and granular materials in the chemical, building-materials and food industries. Multiple sets of plough shares mounted on the main shaft rotate at high speed inside a horizontal drum, tossing the material upward to create convective and diffusive mixing, while the chopper group forcibly breaks up agglomerates. The special shape of the plough shares moves material axially and radially at the same time, delivering high mixing uniformity (CV≤5%) and short mixing times (3-8 minutes). A liquid spray system can be fitted for powder-liquid mixing, and a jacket for heating or cooling. It is widely used in dry-mortar, feed, fertilizer, food-additive and battery-material production.
1.2 Key Features
- Special plough-share geometry for highly efficient three-dimensional convective mixing
- Choppers forcibly break up lumps — suits materials with higher liquid content
- High mixing uniformity of CV≤5%; mixing time of 3-8 minutes
- Optional liquid spray system for powder-liquid granulation
- Horizontal drum with large discharge door for clean, complete discharge
- Jacketed heating/cooling available
- Variable-frequency speed control for different materials
- Full capacity range from 100 to 6000 L
1.3 Document Scope
This specification covers the design principles, performance parameters, system classification, key component selection, applications, design standards and certifications, custom options, warranty terms, packaging and delivery, and the information required for inquiries regarding the ploughshare mixer. It serves as a comprehensive reference for procurement selection and engineering communication.
2. Working Principle
2.1 Ploughshare Mixer Process Flow
Ploughshare mixer process: charging → low-speed pre-mixing → high-speed mixing → liquid spraying (optional) → chopping → discharge. As the plough shares rotate with the main shaft, they throw the material tangentially along the drum wall; under centrifugal force and gravity the material forms axial convection and radial turnover. The choppers, rotating at high speed (1400-2900rpm), apply intense shear and impact to the material, breaking up agglomerated particles. The combined action of plough shares and choppers achieves uniform mixing in a short time. The spray system sprays liquid evenly onto the tumbling material through nozzles, enabling powder-liquid mixing.
3. System Classification
| Classification | Typical models | Parameter range | Application | Key feature |
|---|
| Small | LDH-100, LDH-300 | Capacity 100-300L | Small batches / pilot | Single-row ploughs |
| Medium | LDH-500, LDH-1000 | Capacity 500-1000L | Standard production | Double-row ploughs + choppers |
| Large | LDH-2000, LDH-4000 | Capacity 2000-4000L | Large-scale production | Multi-row ploughs + multiple choppers |
| Extra-large | LDH-6000 | Capacity 6000L | Ultra-large scale | Heavy-duty design |
4. Technical Parameters
4.1 Main Technical Parameters of the Ploughshare Mixer
| Parameter | LDH-100 | LDH-300 | LDH-500 | LDH-1000 | LDH-2000 | LDH-4000 | LDH-6000 |
|---|
| Working volume (L) | 100 | 300 | 500 | 1000 | 2000 | 4000 | 6000 |
| Total volume (L) | 160 | 480 | 800 | 1600 | 3200 | 6400 | 9600 |
| Motor power (kW) | 5.5 | 7.5 | 11 | 18.5 | 30 | 45 | 55 |
| Main shaft speed (rpm) | 60 | 55 | 50 | 45 | 40 | 35 | 30 |
| Number of ploughs | 4 | 6 | 8 | 10 | 14 | 20 | 24 |
| Number of choppers | 2 | 2 | 3 | 3 | 4 | 4 | 6 |
| Chopper motor (kW) | 1.5 | 2.2 | 2.2 | 3 | 4 | 5.5 | 7.5 |
| Liquid spray rate (L/min) | 0-2 | 0-5 | 0-8 | 0-12 | 0-20 | 0-30 | 0-40 |
4.2 Dimensions and Weight
| Model | Length (mm) | Width (mm) | Height (mm) | Net weight (kg) | Footprint (m²) |
|---|
| LDH-100 | 1500 | 600 | 900 | 500 | 0.9 |
| LDH-300 | 1800 | 800 | 1000 | 800 | 1.5 |
| LDH-500 | 2000 | 900 | 1100 | 1200 | 1.8 |
| LDH-1000 | 2500 | 1100 | 1300 | 2000 | 2.8 |
| LDH-2000 | 3000 | 1300 | 1500 | 3500 | 4.0 |
| LDH-4000 | 3600 | 1600 | 1800 | 6000 | 5.8 |
| LDH-6000 | 4200 | 1800 | 2000 | 9000 | 7.6 |
5. Applications
| Industry | Segment | Special requirement | Representative products |
|---|
| Dry mortar | Masonry / rendering / insulation mortars | High uniformity | Special mortars |
| Feed | Premixes / concentrates | Uniformity CV≤5% | Vitamin premixes |
| Fertilizer | Compound / blended fertilizers | Anti-caking | BB fertilizer |
| Battery materials | Cathode / anode materials | No metal contamination | Ternary cathode materials |
| Food | Seasonings / milk powder | Food-grade FDA | Compound seasonings |
| Building materials | Insulation / fireproofing materials | Uniform mixing | Perlite insulation |
6. Core Component Selection
| Component | Function | Material | Selection notes |
|---|
| Plough share | Lifts material to create convection | SS304 / wear-resistant alloy | Shape and quantity affect mixing |
| Chopper | Breaks up lumps and agglomerates | SS304 / tungsten carbide | Speed 1400-2900rpm |
| Drum | Holds the material | SS304 / carbon steel | Horizontal design with large discharge door |
| Main shaft and bearings | Drives the plough shares | 40Cr | Dynamic balancing required |
| Spray system | Adds liquid to the material | Stainless steel nozzles | Adjustable flow, fine atomization |
| Discharge valve | Controls discharge | Pneumatic / manual butterfly valve | Large opening for fast discharge |
| Transmission | Transmits power | Gearbox + coupling | Shaft alignment must be ensured |
| Control system | Coordinates operation | PLC + HMI | Programmable with recipe storage |
7. Design Standards and Certifications
| Standard / Certification | Scope | Compliance | Certificate / Report |
|---|
| Relevant GB/T standards | Design & manufacture | Fully compliant | Type test 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. | Item | Options | Default | Lead-time impact |
|---|
| 1 | Plough type | Standard / wear-resistant ploughs | Standard ploughs | Wear-resistant +1 week |
| 2 | Chopper configuration | 2/3/4/6 choppers | 2 choppers | Extra choppers +1 week |
| 3 | Spray system | None / single-line / multi-line | None | Multi-line +1-2 weeks |
| 4 | Jacket | None / heating / cooling | None | Jacket +2 weeks |
| 5 | Discharge method | Pneumatic butterfly valve / manual / screw | Pneumatic butterfly valve | Screw +2 weeks |
| 6 | Explosion-proofing | Standard / ExdIIBT4 | Standard | Ex-proof +2-3 weeks |
9. Material Property Requirements
| Property | Requirement | Notes |
|---|
| Operating temperature | -40~250℃ | Depends on seals and materials |
| Corrosiveness | Mild to moderately corrosive | 316L or lining required for strongly corrosive media |
| Explosion-proofing | Selected per zone | Zone1/Zone2 ratings |
10. Warranty Terms
| Category | Period | Coverage | Conditions |
|---|
| Main equipment warranty | 12 months | All components | 12 months from successful commissioning |
| Extended warranty (optional) | 24 months | Same as 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 |
| Customized configuration lead time | 10-16 weeks |
| Incoterms | FOB Shanghai / CIF / DAP |
| Packaging | Export-grade wooden case |
| Shipping | Container or break-bulk shipping |
12. Information Required for Inquiry
| No. | Information required | Description / Example |
|---|
| 1 | Material name and properties | Powder / granule / density / particle size |
| 2 | Batch capacity | kg or L per batch |
| 3 | Liquid spraying required | Yes / no / liquid ratio |
| 4 | Mixing uniformity requirement | CV value % |
| 5 | Material of construction | SS304/316L/carbon steel |
| 6 | Explosion-proofing | Standard / explosion-proof |
| 7 | Discharge method preference | Pneumatic / manual / screw |
| 8 | Installation conditions | Plant dimensions / floor load |