INDUSTRY COMPONENT

Blade

Blade is a key component of mixing impellers that transfers mechanical energy to fluids for homogenization, suspension, or dispersion in industrial processes.

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Component Specifications

Definition
A blade is the primary working element of a mixing impeller, designed to create fluid motion through rotational energy. It converts torque from the drive shaft into hydrodynamic forces that generate axial, radial, or tangential flow patterns depending on its geometry. Blades are engineered to optimize mixing efficiency, minimize power consumption, and handle specific fluid rheologies across various industrial applications.
Working Principle
Blades operate on fluid dynamics principles where rotational motion creates pressure differentials. As blades rotate, they displace fluid, generating velocity gradients and shear forces. The blade angle, curvature, and surface area determine flow direction (axial for top-to-bottom circulation, radial for outward motion, or tangential for swirling). This mechanical agitation promotes mass transfer, heat exchange, and particle suspension by disrupting laminar flow and inducing turbulence in viscous or multiphase systems.
Materials
Typically manufactured from stainless steel (AISI 304/316 for corrosion resistance), carbon steel (for non-corrosive applications), Hastelloy (for extreme chemical environments), or engineered plastics (PTFE, polypropylene for food/pharmaceutical use). Surface finishes range from polished (Ra<0.8μm for sanitary applications) to coated (epoxy, rubber for abrasion resistance).
Technical Parameters
  • Diameter 150-3000 mm
  • Thickness 3-25 mm
  • Blade Count 2-6 blades
  • Maximum RPM 50-1800 rpm
  • Pitch Angle 15-90 degrees
  • Surface Area 0.1-2.5 m²
  • Pressure Rating Up to 10 bar
  • Power Requirement 0.5-150 kW
Standards
ISO 2858, DIN 28136, ASME B73.1, 3-A Sanitary Standards

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Blade.

mixing blade impeller blade agitator blade industrial mixing fluid agitation shear blade axial flow impeller radial flow impeller mixing equipment Blade Blade in Chemical Manufacturing

Parent Products

This component is used in the following industrial products

Mixing Impeller

A rotating component within a mixing tank that agitates and homogenizes coating slurry through fluid movement.

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Blade Assembly

A set of blades arranged in a frame that controls airflow, light, or visibility in dampers and louvers.

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Bulldozer

A heavy-duty tracked vehicle equipped with a large metal blade for pushing, excavating, and leveling soil, sand, rubble, or other materials.

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Engineering Analysis

Risks & Mitigation
  • Cavitation damage from improper speed/viscosity matching
  • Fatigue failure from cyclic loading
  • Corrosion in chemical environments
  • Imbalance causing shaft vibration
  • Fouling reducing efficiency
FMEA Triads
Trigger: Material fatigue from cyclic stress
Failure: Blade fracture leading to catastrophic impeller failure
Mitigation: Regular NDT inspection, proper material selection for fatigue resistance, stress relief treatments
Trigger: Corrosive chemical attack
Failure: Thinning and eventual perforation of blade material
Mitigation: Use corrosion-resistant alloys, protective coatings, regular thickness measurements
Trigger: Improper installation or alignment
Failure: Excessive vibration causing bearing/seal damage
Mitigation: Precision alignment procedures, dynamic balancing, proper mounting torque

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.5 mm on critical dimensions, ±1° on pitch angles, Ra 0.4-3.2 μm surface finish depending on application
Test Method
Dynamic balancing to ISO 1940 G6.3, material certification per ASTM/EN standards, dimensional verification with CMM, hydrostatic pressure testing for sealed blades

Buyer Feedback

★★★★☆ 4.7 / 5.0 (14 reviews)

"Found 56+ suppliers for Blade on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Blade is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Chemical Manufacturing environments. No issues with the Blade so far."

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Frequently Asked Questions

What are the main types of mixing impeller blades?

The three primary types are axial flow blades (like pitched blade turbines for top-to-bottom circulation), radial flow blades (like straight blade turbines for high shear applications), and specialized blades (like hydrofoils for low power consumption or anchor blades for high viscosity fluids).

How do blade design parameters affect mixing performance?

Blade diameter determines flow rate, pitch angle controls flow direction, blade width affects shear rate, and number of blades influences power draw and flow patterns. Optimized designs balance mixing efficiency against energy consumption for specific fluid properties.

What maintenance is required for mixing blades?

Regular inspection for corrosion, erosion, or mechanical damage; checking bolt torque on mounted blades; verifying alignment to prevent vibration; and cleaning according to process requirements (CIP systems for sanitary applications).

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Binder Compatibility Agent Blade Plate