Overview
The double deck vibrating linear screen is a specialized screening machine designed for efficient particle size separation in industrial applications. It consists of two screening decks stacked vertically, allowing simultaneous classification of materials into three distinct fractions. Driven by vibration motors, the linear motion ensures consistent material flow and high screening accuracy. This equipment is widely adopted in industries requiring precise grading, such as mining (coal, ores), agriculture (grains, fertilizers), and chemicals (powders, granules). Its modular design facilitates customization, including mesh sizes, deck angles, and material compatibility, to meet specific operational demands.
Structure and Working Principle
The screen comprises a base frame, vibration motors, screen decks (upper and lower), and supporting springs. The motors generate synchronized linear vibrations, propelling materials forward while smaller particles pass through the mesh. The upper deck separates coarse particles, while the lower deck further refines the middlings and fines. Key components include replaceable screen panels, dust-proof covers, and adjustable vibration intensity. The linear motion minimizes blinding (mesh clogging) and enhances throughput. For abrasive materials, wear-resistant alloys or polyurethane screens are recommended to prolong service life.
Key Features
1. **Dual-Layer Efficiency**: Processes materials into three fractions in a single pass, reducing equipment footprint. 2. **Customizable Decks**: Mesh sizes range from 0.1mm to 50mm, with options for woven wire, perforated plates, or rubber screens. 3. **Low Maintenance**: Sealed bearings and grease-lubricated motors minimize downtime. 4. **Energy-Efficient**: Balanced vibration reduces power consumption (typically 0.5–3 kW per motor). 5. **Scalability**: Available in widths from 0.5m to 2.5m, handling capacities up to 50 tons/hour.
Application Areas
1. **Mining**: Screening crushed ores, coal, and aggregates. 2. **Food Processing**: Grading flour, sugar, or salt with food-grade stainless steel construction. 3. **Recycling**: Separating plastics, metals, or construction waste. 4. **Pharmaceuticals**: Precise sizing of active ingredients or excipients. 5. **Chemicals**: Classifying granules or powders with anti-corrosion coatings.
Maintenance and Precautions
Routine checks should include motor temperature, spring integrity, and screen tension. Replace worn meshes promptly to prevent oversize contamination. For abrasive materials, rotate or flip screens periodically to extend lifespan. Avoid feeding oversized or wet materials beyond design limits, which may cause imbalance or deck damage. Install dust extraction systems for hazardous powders. Always disconnect power before servicing.
B2B Procurement Guide
When sourcing, verify certifications (ISO, CE) and supplier after-sales support. Request material test reports for screens and frames. Compare motor brands (e.g., Italian Oli or German NDE) for reliability. For reference, a standard 1.2m-wide carbon steel model costs ~$5,000, while stainless steel versions range ~$8,000–$12,000. Customizations like explosion-proof motors or automated cleaning add 20–40% to the base price. Lead times typically span 4–8 weeks.
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