Gas-Tight Serpentine Drag Chain Conveyors

Fully sealed, multi-directional scraper conveyor for complex layout requirements.
Overview The Gas-Tight Serpentine Drag Chain Conveyor revolutionizes material handling in spatially constrained and environmentally sensitive applications. Engineered for multi-directional flexibility within a single plane, this fully sealed system navigates complex layouts while maintaining zero leakage. Ideal for toxic, explosive, or hygroscopic materials, it serves industries like nuclear power, chemical processing, and high-precision electronics manufacturing. Key Features
  1. Unrestricted Planar Flexibility
    • Minimum bending radius: 1.5× chain pitch, enabling 360° loops, S-turns, or spiral paths within a horizontal plane.
    • Modular design supports on-site reconfiguration without disassembly.
  2. Absolute Sealing Integrity
    • IP69K-rated enclosure with double-lip seals and gas-purged joints (N₂/Ar optional).
    • Leakage rate: <0.1% of conveyed volume under 5 kPa pressure differential.
  3. Harsh Environment Resilience
    • Operational range: -40°C to +150°C (extendable to 300°C with ceramic-lined chains).
    • Withstands 95% RH, pH 1–14 exposure, and explosive atmospheres (ATEX Zone 0/20 compliant).
Technical Specifications
Parameter Specification
Chain Type Forged alloy steel with tungsten-carbide scrapers
Chain Pitch 150–300 mm (custom pitches available)
Trough Width 250–1,000 mm
Speed Range 0.05–0.8 m/s (servo-controlled precision drive)
Pressure Resistance -10 kPa to +15 kPa (vacuum/pressure dual-mode)
Power Requirements 4–75 kW (regenerative braking for descent loads)
Material Compatibility Particles ≤50 mm, powders, and slurries up to 40% solids
Design & Compliance
  • Seal Verification: Helium mass spectrometry testing guarantees <10^-6 mbar·L/s leak rates.
  • Corrosion Protection: Multi-layer epoxy coating (500μm) or Hastelloy C-276 construction.
  • Compliance: Meets GB/T standards for hermetic conveyors, ISO 14644-1 Class 8 cleanroom requirements, and SIL 2 safety certification.
Applications
  • Nuclear Industry: Transporting radioactive waste or fuel pellets.
  • Semiconductor Manufacturing: Ultra-clean transfer of wafers and photoresists.
  • Pharmaceuticals: Contained handling of APIs and cytotoxic compounds.
  • Food Processing: Hygienic conveyance of flavorings, additives, and allergen-free batches.
Customization Options
  • Layout Adaptability: Ceiling-mounted, floor-embedded, or vertical "serpentine tower" configurations.
  • Smart Monitoring: Embedded IoT sensors track chain wear (±0.1mm accuracy), seal integrity, and material cross-contamination risks.
  • Specialized Chains: Non-sparking copper-beryllium alloys for explosive environments, FDA-grade stainless steel for food contact.
Why Choose Our System?
  1. Space Optimization: Reduces footprint by 60% vs. traditional conveyor networks.
  2. Zero Cross-Contamination: Dedicated material channels and CIP/SIP compatibility.
  3. Energy Recovery: Regenerative drives reclaim 18% of energy during downward slopes.
  4. Lifecycle Costs: 50,000-hour maintenance interval for chains under standard loads.
Operational Guarantees
  • Cleanroom Compatibility: Achieves ≤100 particles/ft³ (≥0.3μm) in controlled environments.
  • Installation: Pre-commissioned plug-and-play modules reduce deployment time by 70%.
  • Warranty: 3-year full coverage, including seal replacement and alignment recalibration.
Contact us to design a hermetic conveying solution that bends to your facility's needs—literally. Note: All specifications conform to GB/T framework. Customized systems may require extended lead times.  

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