Shaftless Trommel Screens
Wrap-resistant drum screen for abrasive/wet materials (silicon/ferroalloy/electrolytic), sealed options.
Product Overview
Shaftless Trommel Screens are engineered to tackle challenging material separation and classification tasks in industries dealing with abrasive, viscous, or wet substances. Ideal for applications in silicon processing, ferroalloy production, electrolytic material handling, and wastewater treatment, these screens excel in environments where conventional screens struggle due to material buildup or mechanical limitations. The wrap-resistant drum design and optional sealed configurations ensure reliable performance in harsh conditions while minimizing maintenance downtime.Key Features & Benefits
- Wrap-Resistant Drum Design
- Eliminates shaft-related clogging or entanglement risks, enhancing operational efficiency for sticky or fibrous materials.
- Optimized drum geometry ensures consistent material flow and screening accuracy.
- Robust Construction
- Drum shell surface smoothness: ≤2 mm凹陷变形量 (depression deformation) per section.
- Shell straightness tolerance: 1/1000 of total length, ensuring structural integrity under heavy loads.
- Sealed Configurations
- Optional airtight sealing prevents dust leakage and protects sensitive components in humid or corrosive environments.
- Abrasion-Resistant Materials
- Drum plates and critical components comply with GB/T 24857 standards for steel structures, ensuring longevity.
- Cast parts (e.g., bearings, supports) adhere to GB/T 24856 specifications for durability.
- Low Maintenance
- Bearings feature advanced sealing technology (zero leakage per GB/T 36865-2018) for extended service life.
Technical Parameters
Structural Specifications
- Drum Dimensions: Customizable diameters (500–3000 mm) and lengths (3–12 m) to match throughput requirements.
- Shell Tolerance:
- Roundness/contour deviation: ≤2 mm.
- Flange-to-centerline perpendicularity: ≤2°, ensuring precise alignment during assembly.
- Surface Finish: Smooth exterior with ≤2 mm凹陷变形量 (surface deformation) per panel.
Screening Performance
- Material Adaptability: Handles bulk densities up to 2.5 t/m³ and particle sizes ranging from 0.5–150 mm.
- Throughput Capacity: Calculated per GB/T 36865-2018 Appendix B.1, adjustable via drum inclination (5°–15°) and rotational speed (10–25 RPM).
- Drive Power: Optimized per GB/T 36865-2018 Appendix B.2, with energy-efficient motor options (3–30 kW).
Mechanical Components
- Drum Support System:
- Heavy-duty roller bearings with IP65-rated seals for wet/dusty environments.
- Radial clearance: ≤0.1 mm to minimize vibration.
- Welding Standards:
- Screen panels welded using intermittent fillet welds on non-working surfaces (per 6.2.8 of GB/T 36865-2018).
- Double-sided welding for critical joints; weld size and spacing comply with design drawings.
Customization Options
- Screen Media: Perforated plates, wedge wire, or polyurethane panels (aperture sizes: 1–50 mm).
- Drum Liners: Replaceable rubber/ceramic liners for abrasive materials.
- Drive Systems: Variable frequency drives (VFD) for speed control.
Quality Assurance
- Material Traceability: All raw materials and purchased components undergo strict inspection (per 6.1.2 of GB/T 36865-2018).
- Testing Protocols:
- Dimensional checks for shell straightness, roundness, and weld integrity.
- 72-hour continuous run test to validate bearing performance and power consumption.
Applications
- Primary Use: Separation of wet/abrasive materials in mining, metallurgy, recycling, and chemical processing.
- Typical Scenarios:
- Classifying silicon slag or ferroalloy granules.
- Dewatering electrolytic manganese or coal slurry.
- Pre-screening municipal solid waste (MSW) or construction debris.