An industrial dust collection system captures dust near the source, conveys contaminated air through ductwork, separates particles and uses a properly selected centrifugal fan to maintain airflow through the complete resistance network.
Fan selection must consider capture airflow, hood design, duct velocity, dust type, particle hardness, collector resistance, filter loading, fan position, temperature, wear risk and the final discharge route.
What an Industrial Dust Collection System Must Do
A dust collection system must capture contaminated air before dust spreads through the workshop. Capture effectiveness depends on hood position, air velocity and the relationship between the process source and surrounding airflow.
The duct network then conveys the dust-laden air to a cyclone, separator, filter or other collection device. The fan must overcome the resistance of the complete route while maintaining sufficient conveying velocity.
Dust type is critical. Fine fibers, light sawdust, hard particles, sticky dust and moist dust behave differently and may require different separators, fan materials, wear protection and maintenance access.
Different Dust Types Require Different System Decisions
Dust composition and particle behavior affect duct velocity, separator choice, fan wear, cleaning method and maintenance frequency.
Light Dust & Fibres
Wood fibres, textile fibres and light sawdust need steady conveying airflow and checks for buildup in ducts and fan inlets.
Fine Dry Dust
Review filtration efficiency and leakage control so fine particles do not return to the work area.
Hard / Abrasive Particles
Pre-separate hard particles where possible. Review wear exposure before selecting the impeller and casing construction.
Sticky / Moist Dust
Deposits on impellers, filters and ducts can increase resistance and cause imbalance. Review the process separately.
Where Dust Collection Fans Are Commonly Used
Baghouse Filter Exhaust
The fan must overcome filter resistance and maintain stable airflow as dust accumulates on filter bags.
Cyclone Separator System
Airflow should support particle separation while controlling pressure loss through the cyclone and ducts.
Grinding & Crushing Dust
Abrasive particles require attention to pre-separation, fan wear exposure and maintenance access.
Welding & Cutting Fume
Fine fume extraction depends on capture hood position, branch balance and filtration efficiency.
Woodworking Dust & Fibres
Light dust and fibres need enough conveying velocity to reduce buildup and blockage risk in ductwork.
Cement Plant Dust Control
Cement and mineral dust can create high particle loading and abrasive wear.
Why Dust Collector Resistance Controls Fan Pressure
The fan must maintain the design airflow after pressure loss from capture hoods, ducts, branches, separators, filters, baghouse elements, dampers and the final discharge route is included.
Filter resistance may increase as dust accumulates. Selection should consider the expected operating condition rather than only the clean-filter pressure shown at startup.
Required fan pressure = hood loss + duct friction + branch and elbow loss + separator resistance + filter resistance + outlet loss + project margin.
Dust collection airflow calculation → · Static vs total pressure → · Read a fan curve →
Dirty-Side Fan vs Clean-Side Fan Arrangement
Fan position affects wear exposure, leakage direction, maintenance and the medium that passes through the impeller.
Dust Passes Through the Fan
The fan is positioned before the final collector or filter, so dust-laden air passes through the impeller. Review particle hardness, concentration, buildup and wear.
Filtered Air Reaches the Fan
The fan is installed after effective separation or filtration. Cleaner air can reduce wear, but filter leakage and residual dust still require review.
Dedicated Dust Collection Fans First, Clean-Side Alternatives Second
For untreated or directly handled dusty airflow, start with dedicated dust-collection product families. Pressure-oriented or general ventilation models belong to the filtered clean-side path after the residual dust condition is confirmed.
| Selection path | Model | Application direction | Next step |
|---|---|---|---|
| Dedicated dust duty | C4-73 | Compact dusty-air, wood-chip and fine-fibre duties. | Review C4-73 |
| Dedicated dust duty | C6-2×51 | Large-flow centralized plant extraction. | Review C6-2×51 |
| Dedicated dust duty | C6-46-11 | Dust, wood chips, bamboo fibre and similar light particulate material. | C6-46-11 details |
| Dedicated dust duty | C6-48 | Light dust, chips, sawdust and fine fibres within the confirmed duty range. | C6-48 details |
| Filtered clean side | 4-72 | Ordinary non-corrosive exhaust after effective filtration. | 4-72 details |
| Filtered clean side | 9-19 / 9-26 | Higher-resistance duties after suitable dust separation or filtration. | 9-19 details · 9-26 details |
Compare the dust collection fan range →
Parameters Required for Dust Collection Fan Selection
Complete dust, duct and collector information helps determine fan series, pressure, motor power, wear protection and installation direction.
Dust and Process Information
- Dust source and industrial process
- Dust type, concentration and particle size
- Particle hardness, abrasiveness and shape
- Moisture, stickiness and buildup tendency
- Normal and maximum gas temperature
- Capture airflow required at each hood
- Dust recovery or reuse requirements
System and Installation Information
- Required total airflow and pressure, with pressure basis identified
- Duct diameter, length, branches and elbows
- Cyclone, baghouse or cartridge-filter resistance
- Clean-filter and loaded-filter pressure conditions
- Fan position before or after the collector
- Motor voltage, frequency, phase and protection
- Rotation, outlet angle, installation space and quantity
New Dust Collection Projects and Existing-System Upgrades
Design Capture, Duct and Collector Together
For a new project, airflow should be distributed across all active hoods while maintaining suitable duct velocity and sufficient pressure at the most unfavorable branch.
- Process layout and dust-source positions
- Hood quantities and simultaneous-use factor
- Duct route and collector selection
- Fan position, discharge route and electrical standard
Correct Low Capture, Blockage or Fan Wear
Existing-system diagnosis should compare the current airflow and pressure with filter condition, duct blockage, branch balance, air leakage and fan wear.
- Existing fan and motor nameplates
- Collector type and pressure readings
- Duct, hood and branch arrangement
- Current issue: low capture, blockage, vibration or wear
Available Configuration Directions
Fan Position
Review dirty-side or clean-side placement against collector type, residual dust and wear exposure.
Rotation & Outlet
Match rotation and outlet angle to the planned duct layout and installation space.
Wear Protection
Review impeller, inlet and casing protection where abrasive particles may reach the fan.
Motor & Power Supply
Specify voltage, frequency, phase, protection and starting method for the project.
Connections & Isolation
Review flexible connections, the base and vibration isolation with the installation requirements.
Maintenance Access
Allow access for filter cleaning, duct inspection and fan maintenance.
Sticky dust, explosive dust, corrosive gas, high temperature and heavy abrasive particles require separate process and safety review before final configuration.
Continue from System Design to Fan Selection
Dust Collection Fans
Compare dedicated dust-duty models before reviewing clean-side alternatives.
System Airflow Calculation
Review hood demand, simultaneous use, branch airflow and total fan demand.
Baghouse Fan Selection
Include clean-filter and loaded-filter resistance and fan position.
Cement Plant Dust Control
Review abrasive loading, pre-separation and wear exposure.
Airflow and pressure → · Static pressure unknown → · Fan power calculation → · Engineering fan selection →
Industrial Dust Collection System FAQ
Where should the fan be installed?
The fan may be installed on the dirty side or clean side depending on the system design. Clean-side installation can reduce wear, while dirty-side installation requires closer review of dust type, hardness and structure.
How is airflow calculated?
System airflow is built from hood demand, capture velocity, simultaneous collection points, branch balance and an appropriate allowance, then checked against duct conveying velocity and total resistance.
What information is most important for fan selection?
Provide required airflow, total pressure, dust type, concentration, particle size, hardness, moisture, temperature, duct layout, collector resistance and installation position.
Can hard or abrasive particles pass directly through the fan?
Hard or abrasive particles can accelerate impeller and casing wear. A cyclone, separator or suitable collector should normally reduce these particles before the fan inlet.
How does filter resistance affect the fan?
Filter resistance is part of total system pressure. As filters load with dust, resistance can rise, so both design and maintenance conditions should be considered.
Can a general ventilation fan be used?
Only when the air is sufficiently cleaned and the remaining dust concentration, temperature and medium condition are within the fan’s confirmed limits. Raw dusty air requires a more suitable fan direction.
Which QIYUE FAN model should be reviewed first?
Start with Group A dedicated dust-collection fans in model order: C4-73, C6-2×51, C6-46-11 and C6-48, then match the duty scale and dust condition. Group B-4-72, 9-19 and 9-26-belongs to filtered clean-side or reduced-dust duties only.
What is the difference between a baghouse fan and a dust extraction fan?
A baghouse fan is usually discussed around filter resistance and loaded-filter conditions, while a dust extraction fan is often discussed from hood capture airflow and duct conveying needs. In practice, both should be reviewed against the complete system route.
Send Your Dust Collection Parameters
Send airflow, pressure, dust type, particle size, hardness, concentration, temperature, collector resistance, duct route, fan position, outlet angle, voltage and quantity.
Send Your Operating Conditions
Airflow, pressure, gas medium, temperature, voltage and quantity.