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Shafted Screw Assemblies

Spiral Stack Press Screw Assembly

Spiral Stack Press Screw Assembly

Gradual-pitch screw assemblies for sludge pressing. Achieves 25-30% DS content in wastewater plants.
Price:Custom PricingCustomized
Spiral Stack Press Screw Assembly
Product Details

Spiral Stack Press Screw Assembly

Product Overview

Jiahe Conveying's Spiral Stack Press Screw Assembly is a precision-engineered dewatering component specifically designed for sludge treatment applications. Our robust screw design combines high compression efficiency with excellent wear resistance, delivering optimal performance in continuous sludge dewatering operations.

Technical Specifications

ParameterSpecificationMaterial Options
Shaft Diameter80-300mm304/316L Stainless Steel
Flight OD200-800mmDuplex Stainless Steel
Pitch Gradient300mm→100mm (variable)Hardfaced Wear Zones
Compression Ratio3:1 to 5:1Tungsten Carbide Coating
Surface FinishRa ≤ 1.6μm (contact surfaces)

Design Features

1. Optimized Dewatering Geometry

  • Gradual pitch reduction for progressive compression

  • Precision-machined flight profiles

  • Integrated drainage channels

2. Enhanced Wear Protection

  • Hardfaced flight edges (HRC 58-62)

  • Replaceable wear sleeves

  • Corrosion-resistant materials

3. Heavy-Duty Construction

  • Solid shaft with torque reinforcement

  • Gusseted flight attachments

  • Balanced rotating assembly

Performance Characteristics

  • Solids Capture Rate: 95-99%

  • Cake Dryness: 18-25% DS

  • Throughput Capacity: 0.5-20 m³/h

  • Service Life: 2-3X industry standard

Applications

Municipal Wastewater

  • Primary/secondary sludge

  • MBR systems

  • Digestate dewatering

Industrial Waste

  • Chemical sludge

  • Food processing waste

  • Paper/pulp slurry

Specialty Treatment

  • Oil sludge

  • Pharmaceutical waste

  • Mining tailings

Customization Options

  • Material grade selection

  • Wear protection packages

  • Special pitch configurations

  • Integrated cleaning systems

  • Smart monitoring sensors

Why Choose Our Spiral Press Screws?

Proven dewatering performance
Extended service intervals
Application-specific designs
Technical support from sludge treatment experts

Contact our environmental equipment team for dewatering solutions!

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Precision helicoidal flight manufacturer: 24/7 engineering support at +86 400 990 1585 for bulk handling solutions.