Featured Engineering Equipment & Assemblies
Explore our precision-engineered chemical process machinery, heavy continuous conveying hardware, and fluoropolymer-lined anti-corrosive units built to withstand rigorous industrial environments.
Shaftless Screw Conveyor Engineering: Overcoming Bulk Transfer Bottlenecks
An authoritative engineering breakdown of shaftless helix mechanics, torsional resistance, and non-clogging geometries for difficult-to-handle bulk solids.
Elimination of Internal Bearings
Traditional shafted augers rely on intermediate hanger bearings that obstruct material flow, causing massive clogging when transferring fibrous, cohesive, or pasty materials. The shaftless spiral rotates freely inside a low-friction liner, creating an entirely unobstructed axial corridor.
High-Torque Sectional Spiraling
Manufactured using cold-drawn or hot-rolled alloy bars through continuous single-piece mandrel-free rolling. The cross-section features thicker outer edges to withstand immense torsional deflection, delivering continuous torque capacities up to 18,500 N·m under extreme hydraulic head loads.
Ultra-Wear Trough Liners
Equipped with bi-color dual-extrusion UHMW-PE 1000 liners or replaceable Hardox® wear plates. The distinctive wear indicator layer triggers planned preventive servicing well before metal-on-metal trough damage occurs, optimizing maintenance cycles and reducing total cost of ownership.
| Conveyor Model | Spiral Diameter (mm) | Max Capacity (m³/h) | Max Torque (N·m) | Typical Drive Power (kW) | Trough Liner Options |
|---|---|---|---|---|---|
| WLS-200 | Ø 190 - 200 | 4.5 - 7.5 | 1,850 | 1.5 - 3.0 | UHMW-PE 1000 PTFE |
| WLS-260 | Ø 250 - 260 | 9.0 - 15.0 | 3,600 | 3.0 - 5.5 | UHMW-PE Dual Color |
| WLS-320 | Ø 310 - 320 | 18.0 - 28.0 | 6,200 | 5.5 - 11.0 | Hardox 450 UHMW-PE |
| WLS-400 | Ø 390 - 400 | 32.0 - 55.0 | 10,500 | 11.0 - 18.5 | Hardox 500 / 16Mn |
| WLS-500 HD | Ø 480 - 500 | 65.0 - 110.0 | 18,500 | 18.5 - 37.0 | Sintered Ceramics / Alloy Steel |
Engineered Scenarios for Challenging Bulk Media
Proven across complex chemical processing, municipal dewatering facilities, and high-salinity industrial crystallization circuits.
Municipal Wastewater Sludge Dewatering
Transferring dewatered filter cake (15%–35% dry solids) directly from belt filter presses, centrifuges, and plate-and-frame filter presses. The open-center flight prevents sticky, fibrous bio-cakes from winding around a center tube, guaranteeing 24/7 continuous operation without bridging.
Brine, Salt & Bromine-Chemical Cakes
Specially engineered for corrosive crude sea salt, vacuum salt centrifuges, and magnesium/calcium chloride slurries. Integrating 316L stainless steel, Hastelloy, or pure PTFE-lined troughs, our conveyors eliminate severe chloride stress-corrosion cracking and pit attacks.
Food Processing & Agro-Industrial Organics
Sanitary shaftless designs featuring quick-release clamped covers, clean-in-place (CIP) spray nozzles, and FDA-compliant UHMW-PE liners. Ideal for transferring spent brewer grains, tomato pomace, potato peelings, and abattoir residues without contamination or rancidity.
China Factory Supply Chain Resilience & Efficiency
Operating from our 28,000 m² specialized manufacturing base in the Weifang Coastal Economic Development Zone, we combine vertical metallurgical integration with lean automated production.
Direct Metallurgical Sourcing
By partnering directly with domestic tier-1 steel mills, our factory secures certified heavy plate and special alloy stock (Q235B, 16Mn, 304, 316L, Duplex 2205, Hardox) at stabilized wholesale pricing. This insulates international procurement partners from global metal market volatility.
Modular Rapid-Turnaround Engineering
Every shaftless screw conveyor is engineered with modular standardized flanged trough segments, pre-aligned drive bases, and precision CNC-plasma cut components. This engineering standard reduces project lead times from 12 weeks down to 3–5 weeks for mission-critical installations.
Rigorous Factory Load Pre-Testing
Before dispatch, every assembled unit undergoes no-load run testing for 4 hours, static and dynamic deflection verification, weld ultrasonic testing (UT), and drive thermal monitoring. This comprehensive protocol ensures flawless site commissioning with zero field adjustments.
Technology Roadmap: Next-Gen Shaftless Conveying
Leading the transformation toward smart, self-monitoring, energy-efficient bulk transfer systems.
IoT-Enabled Predictive Liner Wear Sensors
Integrating embedded resistance-wire sensors inside composite trough liners. The control terminal continuously broadcasts remaining liner thickness and forecasts replacement intervals via Modbus TCP/IP, preventing unplanned shutdowns.
Permanent Magnet Direct-Drive Systems
Phasing out conventional multi-stage gearmotors in favor of high-torque low-RPM permanent magnet synchronous motors (PMSM). This achieves an immediate 18%–25% reduction in power consumption while removing mechanical gear backlashes entirely.
Bio-Polymer & Nanoceramic Composite Liners
Developing molecularly reinforced self-lubricating liner blends that feature a dynamic friction coefficient under 0.08. These materials reduce spiral startup starting torque by 30%, tripling service life in abrasive crystalline salt environments.
Global Commercial Adoption & Industrial Trends
Navigating environmental regulations, plant modernizations, and bulk handling requirements across major worldwide markets.
Europe: Sludge Incineration & ATEX Compliance
European environmental directives mandate high-efficiency thermal hydrolysis and mono-incineration of sewage biosolids. Our shaftless conveyors comply fully with ATEX Zone 21/22 dust-explosion safety directives, offering gas-tight sealed covers to contain offensive odor emissions.
North America: Infrastructure Renewal
Municipalities across the US and Canada are replacing aging shafted augers that experience frequent bearing failures. Our custom-engineered drop-in replacement troughs match legacy centerline dimensions, eliminating expensive civil structural modifications.
Middle East & SEA: Desalination & Chemical EPC
Rapid industrialization and large-scale seawater desalination generate high volumes of concentrated salt cakes and chemical precipitates. Our heavy-duty corrosion-resistant alloy units are built to withstand 50°C ambient desert conditions and high humidity.
Worldwide Engineering Support & Regulatory Compliance
Delivering turnkey plant reliability with strict international quality compliance, remote diagnostics, and lifecycle guarantees.
Global Certification Standards
Fabricated in full compliance with ISO 9001 quality management, CE Machinery Directive 2006/42/EC, ISO 14001 environmental standards, and ASME Section IX welding procedures. Every export shipment includes full material test reports (MTR) and welding inspection dossiers.
Turnkey EPC Deployment
From initial laboratory sludge Rheology profiling and 3D CAD interface integration to ocean export packing, site supervision, and commissioning. Our process engineers ensure the system achieves nominal throughput before handover.
Lifecycle Warranty & Spares Availability
Backed by an extensive inventory of pre-formed replacement spirals, molded UHMW-PE liners, SEW/Nord gear units, and SKF heavy spherical roller bearings. We guarantee 48-hour dispatch for critical wear components worldwide.
Frequently Asked Technical Questions
Key engineering and commercial considerations for specifying shaftless screw conveyors.
Specialized Chemical & Material Handling Equipment
Explore our full line of corrosion-proof valves, processing plants, and continuous mechanical conveying machinery.
