Pneumatic blow conveying
Economical, flexible and compact conveying
Pneumatic blowing systems offer a simple and robust solution for conveying green coffee across production facilities. A rotary blower injects air into stainless steel pipelines, allowing beans to float and travel through the system. While not the gentlest conveying method, green coffee integrity remains preserved for typical production requirements. Blowing systems are often selected when routing is complex, space is limited or when future intake and discharge points may need to be added as production evolves.
When blowing systems are the right choice
Pneumatic blowing conveying is typically selected when:
- Complex routing with multiple bends or elevation changes is required, allowing 45°, 60°, or 90° direction changes to navigate around equipment and structures.
- Intake or discharge points may need to be added later, since pipe routing can be modified and stations added with minimal impact on existing layouts.
- Buildings have limited space or layouts evolve over time, requiring compact and adaptable conveying solutions.
Trade-offs must also be considered. Pneumatic conveying generates dust that must be captured and filtered, consumes more energy than mechanical systems, and remains the loudest conveying option even when insulated.
| Criterion (★ = better performance) | Pneumatic blow conveyor |
|---|---|
| Routing flexibility | |
| Space efficiency | |
| Bean protection | |
| Dust control | |
| Energy efficiency | |
| Noise level | |
| Expansion flexibility | |
| Maintenance simplicity | |
| Operating cost |
Key benefits
Flexible and compact routing in any direction
Pipes can run horizontally, vertically or around obstacles, allowing routing to adapt to existing equipment layouts while minimizing required floor space.
Sturdy and low maintenance
With few moving parts in contact with coffee, maintenance requirements remain limited. Stainless steel piping resists wear and rotary blowers are designed for long operating life.
Lowest initial investment
A blower, piping network, intake and discharge points create one of the simplest conveying architectures, resulting in the most economical initial investment.
Simple addition of intake & discharge points
New machines, silos, or production lines can be connected later by extending piping and adding intake or discharge stations with minimal disruption.
Technical specifications
Download our pneumatic blowing brochure- Suitable for green coffee
- Horizontal, vertical and multi-bend routing designed for optimized product flow
- • Multiple intake and discharge stations configurable anywhere along the route
- Stainless steel food-grade piping construction
- Dust-tight enclosed conveying system
- Typical capacities up to project-specific requirements, commonly reaching several tonnes per hour
- Pipe diameters typically range from 51 mm upward depending on capacity needs
- Rotary piston blower specifications depend on routing length and conveying capacity
Maintenance & service
Dust extraction filters require periodic replacement depending on coffee cleanliness, conveying length, and production volumes, typically every 50 to 500 operating hours.
Rotary piston blowers are designed for long operational life and can convey well over a thousand tonnes of coffee before requiring major servicing when properly maintained.
System upgrade options
- Additional intake or discharge stations
- Integrated weighing or dosing systems
- ATEX-certified configurations for hazardous environments
Systems are engineered to evolve with production growth.
Questions? We're here to assist.
When properly engineered, blowing systems maintain acceptable bean integrity for green coffee conveying, though mechanical solutions remain gentler for fragile products.
Yes. Piping routes allow relatively simple addition of intake and discharge points as production layouts evolve.
Compared with mechanical conveying, pneumatic systems typically consume more energy but compensate through routing flexibility and lower initial investment.
Need help choosing the right conveying solutions?
Every roastery and growth plan is different. Talk with us and design your optimal conveying architecture.