Static Mixer
A static mixer is a precision device used for continuous, in-line blending of fluids (liquids or gases) without moving parts. It utilizes fixed internal elements within a pipe to divide, restructure, and mix materials, providing high efficiency, low maintenance, and consistent, homogenous mixtures. It works by forcing the flow through specially designed internal elements that create turbulence and blending.
Used in industries like food, chemical, pharma, water treatment, and oil & gas.
Working Principle :
Two or more fluids enter the mixer
Flow passes through internal elements
Elements split, rotate, and recombine the fluid
Continuous division creates uniform mixing
👉 Mixing occurs due to:
Flow division
Radial mixing
Turbulence
Types of Static Mixers
1. Helical Static Mixer (Kenics Type)
Spiral elements
Most common
2. Plate / Baffle Mixer
Flat plates arranged in zig-zag
Used for laminar flow
3. Multi-Element Mixer
Series of elements for high mixing efficiency
4. Disposable Static Mixer
Used in adhesives & small applications
Applications
Static mixers are used in:
🍛 Food industry → mixing sauces, syrups,
beverages
🧪 Chemical industry → blending chemicals
💊 Pharma → liquid mixing
💧 Water treatment → chemical dosing
🛢️ Oil & gas → fuel blending
Key Features
No moving parts
Low maintenance
Energy efficient
Compact design
Continuous mixing
Advantages
Simple design
No electricity required (uses flow energy)
Uniform mixing
Long life
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