Rotary Feeder
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Rotary Airlock Feeder for Dust Collection and Bulk Material Handling
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What is a Rotary Feeder?
A Rotary Feeder, also called a Rotary Airlock Valve or Rotary Valve, is an essential component in bulk material handling and pneumatic conveying systems. Its main function is to discharge bulk solids from hoppers, silos, or cyclones at a controlled rate while maintaining an airlock between different pressure zones.
The rotating vanes of the feeder continuously scoop and transfer materials, ensuring a steady flow while preventing air or gas leakage. It’s a key element for industries that handle powders, pellets, granules, and fine bulk solids.
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Key Features of Our Rotary Feeders
· Precision Engineering: Our rotary feeders are designed with tight tolerances to ensure accurate material dosing and minimal air leakage.
· Heavy-Duty Construction: Body made from cast iron or stainless steel with hardened steel rotors for long-lasting performance, even in abrasive or corrosive environments.
· Seamless Airlock Function: Engineered for high-pressure pneumatic conveying systems, ensuring excellent sealing capability between upstream and downstream processes.
· Custom Rotor Options: Available in open-end, closed-end, scalloped, and adjustable-tip rotor designs to suit your specific material flow and wear conditions.
· Easy Cleaning & Maintenance: Quick-release designs, FDA-grade surfaces, and drop-out rotor options for applications in food, pharma, and chemical industries.
Technical Specifications
| Parameter | Value |
| Size | DN100 – DN500 |
| Capacity | 0.5 – 50 m³/h |
| Operating Pressure | Up to 1.0 bar (higher on request) |
| Temperature | Up to 300°C |
| Drive Options | Direct drive, Chain drive, Gearmotor |
| Material | Cast Iron, SS304, SS316, Hardox |
| Rotor Types | 6, 8, or 10 vanes; open or closed ends |
| Optional Features | Blow-through type, Explosion-proof motor, Speed control |
Applications of Rotary Feeders
Rotary feeders are indispensable in many industrial processes, including:
• Cement & Building Materials: Feeding and air sealing of fly ash, clinker dust, gypsum, and lime in baghouses and silo discharge.
• Chemical & Petrochemical Industry: Handling dry chemicals and powders in inert gas environments without contamination or leakage.
• Food & Beverage: Hygienic feeding of flour, sugar, grains, spices, and other ingredients — available in FDA-compliant finishes.
• Plastics & Polymers: Feeding plastic pellets, resins, and compounds into extrusion or conveying systems.
• Recycling & Environmental: Used in dust collection systems, biomass feeding, and waste gas cleaning plants.
Rotary Feeder vs Screw Feeder vs Slide Gate
| Feature | Rotary Feeder | Screw Feeder | Slide Gate |
| Airlock Function | ✅ | ❌ | ❌ |
| Dust Control | High | Medium | Low |
| Continuous Flow | Yes | Yes | No |
| Suitable for Pneumatic Systems | ✅ | ❌ | ❌ |
| Maintenance Needs | Low | Medium | Low |
Why Choose Our Rotary Feeders?
30+ Years of Engineering Experience OEM & ODM Available ISO 9001 Certified Production Full After-Sales Support Custom Inlet/Outlet Sizes and Flange Standards (DIN, ANSI, JIS)
Optimize Your Bulk Handling System Today
Whether you’re handling abrasive cement dust or delicate food powders, our rotary feeders offer a cost-effective, reliable, and customizable solution for your system.