There are many types of fans, including material handling fans, backward inclined fans and pressure type fans. The fan creates the air movement within a dust collection system. With a material handling fan, it not only moves the air but also is capable of moving the material.
Handles Abrasives: Material handling fans are built for heavy duty applications and can be used to convey materials such as coal dust or saw dust. The flat, radial blade design of the wheel does not allow material from the airstream to accumulate.
Increased Static Pressure: Material handling fans are capable of increased static pressure, allowing the fan to move more air further while keeping the conveyed material in the air stream.
Less Bearing Wear: Because material handling fans spin slower, less bearing wear occurs while the fan is in motion. This makes the bearings last longer and help to keep maintenance to a minimum.
Less Efficient: The wheels of material handling fans are less efficient as they require more horse power per CFM than clean air fans.
Larger Footprint: Material handling fans are larger fans. This means they have a larger foot print, taking up more space than other fans.
Aggressive Use: The application of this fan conveying materials can sometimes cause uneven wear from abrasive or sticky dust, causing the fan to go out of balance and create destructive vibrations.