The process
Fabrication shops capture welding fume at source with arms and hoods into cartridge filters, and clear the general shop air with roof extractors and wall fans.
The gas
Fine metallic fume from welding and cutting, captured at source and taken to a cartridge filter. Light dust, ambient temperature; the fan is sized for the hood capture velocities and the filter pressure drop.
Fans in this process
| Duty | What it does here | Type usually selected |
|---|---|---|
| Fume Exhaust System | Hoods, ducting and an exhaust fan that capture fume at source and deliver it to a scrubber, bag filter or stack. | Backward inclined and radial tipped |
| Dust Collector Fan | The fan behind a bag filter, cyclone or multiclone on a dust extraction system. | Backward inclined and radial tipped |
| Ventilation Fan | Moves air through a plant or building for fresh air supply, heat removal and fume dilution where the system is ducted. | Backward inclined and forward curved |
| Roof Extractor | An axial fan in a weatherproof cowl mounted on an inclined or flat roof, exhausting hot air from the ridge of a factory shed.. | Axial |
Industries
Related processes
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