Industry-Verified Manufacturing Data (2026)

Scroll conveyor

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Scroll conveyor used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Scroll conveyor is characterized by the integration of Conveyor Hub and Helical Flight. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless steel (e.g., 316L, 304) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A helical component within a centrifuge that moves separated solids along the bowl wall for discharge.

View Full Specifications Explore Manufacturing Sources

Product Specifications

Technical details and manufacturing context for Scroll conveyor

Definition
The scroll conveyor is a critical internal component of a decanter centrifuge, consisting of a helical screw that rotates at a differential speed relative to the centrifuge bowl. Its primary function is to continuously convey the separated solid phase (sediment) along the conical section of the bowl towards the discharge ports, enabling continuous operation of the centrifuge.
Working Principle
The scroll conveyor rotates at a slightly different speed (typically 5-50 RPM slower) than the centrifuge bowl. This differential speed creates a relative motion that 'scrolls' or pushes the settled solids along the inner wall of the bowl. The helical flights of the conveyor provide the mechanical force to transport the solids against centrifugal force and friction.
Common Materials
Stainless steel (e.g., 316L, 304), Hard-surfaced alloy steel (e.g., tungsten carbide coated)
Technical Parameters
  • Outer diameter of the scroll conveyor, matching the inner diameter of the centrifuge bowl. (mm) Per Request
Components / BOM
  • Conveyor Hub
    Central shaft that transmits torque and supports the helical flights.
    Material: Forged steel
  • Helical Flight
    Spiral blade that contacts and conveys the separated solids.
    Material: Hard-surfaced steel
  • Feed Zone Section
    Initial section of the conveyor where feed slurry is introduced.
    Material: Stainless steel
Engineering Reasoning
0.5-3.0 m/s axial velocity, 1500-3000 RPM bowl rotation
Helix pitch deformation exceeding 0.5 mm deviation from nominal geometry at 3500 RPM
Design Rationale: Centrifugal bending stress exceeding yield strength of 316L stainless steel (205 MPa) at critical radius
Risk Mitigation (FMEA)
Trigger Abrasive solids concentration exceeding 40% by volume
Mode: Helical flight wear rate exceeding 0.1 mm/hour
Strategy: Hard-facing with tungsten carbide overlay (HV 1200) on leading edges
Trigger Bowl imbalance exceeding ISO 1940 G2.5 balance grade
Mode: Resonant vibration at 75-85 Hz causing scroll-conveyor structural fatigue
Strategy: Dynamic balancing with correction masses at 30° intervals on scroll hub

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Scroll conveyor.

Decanter screw Screw conveyor Helical conveyor centrifuge scroll conveyor replacement stainless steel helical flight conveyor hard-surfaced alloy scroll conveyor industrial solids discharge conveyor centrifuge bowl wall conveyor system

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Centrifuge
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 10 bar (dependent on centrifuge design)
flow rate: 5-500 m³/h (dependent on scroll diameter and pitch)
temperature: -20°C to 150°C (dependent on material of construction)
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ Municipal wastewater sludge ✓ Chemical process slurries ✓ Food processing waste
Unsuitable: Highly abrasive materials (e.g., silica sand, metal shavings) without hardened wear protection
Sizing Data Required
  • Solids throughput (kg/h dry solids)
  • Bowl diameter and scroll pitch (mm)
  • Slurry feed characteristics (density, viscosity, particle size distribution)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing seizure or excessive wear
Cause: Inadequate lubrication, contamination ingress (dust, moisture), or misalignment leading to uneven load distribution and overheating.
Scroll flight damage or deformation
Cause: Material buildup causing over-torque, foreign object intrusion, or fatigue from cyclic loading and abrasive material flow.
Maintenance Indicators
  • Unusual grinding or screeching noises from drive or bearing housings
  • Visible wobble or misalignment during operation, or erratic motor current spikes
Engineering Tips
  • Implement condition-based lubrication using automated systems and monitor vibration trends to detect early bearing degradation.
  • Install wear-resistant flight liners or coatings, and use torque monitoring with automatic shutdown to prevent overload damage.

Compliance & Manufacturing Standards

Reference Standards
ISO 5049-1:1994 - Continuous mechanical handling equipment - Safety requirements for belt conveyors ANSI/CEMA 402-2003 - Belt Conveyors DIN 15207-1:2010 - Continuous conveyors - Belt conveyors for loose bulk materials - Basics for calculation and dimensioning
Manufacturing Precision
  • Chain pitch tolerance: +/-0.5% of nominal pitch
  • Shaft alignment: +/-0.1mm per meter of conveyor length
Quality Inspection
  • Non-destructive testing (NDT) of welds using magnetic particle inspection
  • Load testing to verify structural integrity under maximum rated capacity

Factories Producing Scroll conveyor

Verified manufacturers with capability to produce this product in China

Add your factory

✓ 94% Supplier Capability Match Found

P Project Engineer from United Arab Emirates Feb 06, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Scroll conveyor arrived with full certification."
Technical Specifications Verified
S Sourcing Manager from Australia Feb 03, 2026
★★★★★
"Great transparency on the Scroll conveyor components. Essential for our Machinery and Equipment Manufacturing supply chain."
Technical Specifications Verified
P Procurement Specialist from Singapore Jan 31, 2026
★★★★★
"The Scroll conveyor we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

16 sourcing managers are analyzing this specification now. Last inquiry for Scroll conveyor from UAE (12m ago).

Supply Chain Compatible Machinery & Devices

Automated Assembly Line System

Integrated production system for sequential component assembly operations

Explore Specs →
Automated Powder Coating System

Integrated industrial system for applying dry powder coatings to metal substrates.

Explore Specs →
Centrifugal Pump Impeller

Rotating component that transfers energy to fluid in centrifugal pumps.

Explore Specs →
High-Precision CNC Laser Cutting Machine

Computer-controlled industrial machine using focused laser beams to cut sheet metal with micron-level accuracy.

Explore Specs →

Frequently Asked Questions

What materials are best for scroll conveyors in corrosive environments?

For corrosive environments, 316L stainless steel offers excellent corrosion resistance, while tungsten carbide coated alloy steel provides superior wear resistance for abrasive applications.

How does the helical flight design affect solids discharge efficiency?

The helical flight's pitch and geometry are optimized to move separated solids along the centrifuge bowl wall with minimal energy consumption while preventing clogging and ensuring consistent discharge rates.

What maintenance is required for scroll conveyor components?

Regular inspection of the helical flight for wear, checking the conveyor hub alignment, and monitoring the feed zone section for buildup are essential. Hard-surfaced alloys typically require less frequent replacement than standard steels.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

Get Quote for Scroll conveyor

Request technical pricing, lead times, or customized specifications for Scroll conveyor directly from verified manufacturing units.

Your business information is encrypted and only shared with verified Scroll conveyor suppliers.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Thank you! Your message has been sent. We'll respond within 1–3 business days.

Need to Manufacture Scroll conveyor?

Connect with verified factories specializing in this product category

Add Your Factory Contact Us
Previous Product
Screw Feeder
Next Product
Seal Assembly