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Centrifugal fans play a vital role in the printing industry. They are mainly used for ventilation, exhaust, air supply, drying, dust removal and other links, which directly affect the printing quality, production efficiency and workshop environment. The following are its specific applications and technical points:
1. Main application scenarios
Printing machine drying system
Function: accelerate the drying of ink, UV coating or water-based coating to prevent smudges.
Fan type: high-pressure centrifugal fan (high temperature resistant, wind pressure can reach 2000-3000Pa).
Technical points:
Coordinate with hot air circulation system (temperature 40-80℃), wind speed needs to be uniform and stable; anti-corrosion design (ink solvent volatilization is easy to corrode the impeller).
Workshop ventilation and waste gas treatment
Function: discharge volatile organic compounds (VOCs), paper powder, solvent odor.
Fan type: explosion-proof centrifugal fan (ATEX certification is required when containing benzene solvents) + waste gas treatment equipment (such as activated carbon adsorption tower).
Technical points:
The air volume calculation needs to match the workshop volume and ventilation frequency (usually 15-20 times/hour); the impeller needs an anti-stick coating (to avoid paper dust accumulation).
Paper conveying and positioning:
Function: Ensure smooth paper conveying through negative pressure adsorption or positive pressure blowing.
Fan type: medium pressure centrifugal fan (air pressure 500-1500Pa, low noise).
Technical points:
The air pressure needs to be adjustable to adapt to different gram weights of paper (such as 80g/m² coated paper vs 300g/m² cardboard); equipped with a frequency converter to respond to changes in printing press speed.
Dust removal system
Function: Remove paper scraps and dust generated by cutting and die-cutting processes.
Fan type: large flow centrifugal fan (air volume 2000-5000m³/h) + cyclone separator/filter cartridge.
Technical points:
The impeller needs to be wear-resistant (paper scraps can easily wear the blades); anti-static treatment of the pipeline (paper powder accumulation may cause fire).
2. Key parameters for selection
Parameter Reference range Influencing factors
Air volume (m³/h) 1000-10000 Printing machine speed, drying section length
Air pressure (Pa) 500-3000 Pipeline resistance, pressure loss of exhaust gas treatment equipment
Temperature resistance (℃) ≤150 (normal)/≤250 (high temperature) UV curing temperature, hot air drying requirements
Noise (dB) ≤75 Workshop environment requirements (such as night production)
3. Special industry requirements
Explosion-proof requirements: Workshops using flammable solvents such as ethanol and ethyl acetate need to use explosion-proof motors (Ex dⅡBT4) and static-discharging impellers.
Energy efficiency optimization: Frequency conversion control can save more than 30% energy (such as ABB frequency conversion drive is often used for Heidelberg printing machine supporting fans).
Maintenance convenience: quick-detachable impeller design, easy to clean paper powder and ink agglomerates (such as Italian Ventmeca fans).
Centrifugal fans in the printing industry need to take into account high efficiency, corrosion resistance, and safety. When selecting, parameters should be matched according to specific processes (such as offset printing, gravure printing, and digital printing). The future trend will be towards intelligence (IoT remote monitoring), energy saving (permanent magnet motor), and integration (linked with RTO incinerators). Dongguan Sanyue Precision Electromechanical Co., Ltd. is a technology-based enterprise that focuses on the production of various specifications of high-temperature centrifugal fans, high-temperature motors, long-axis motors and other series of pneumatic products. The research and development, manufacturing, sales, and after-sales service are integrated. The products have passed CE\FCC\ROHS and other certifications. Contact+86-13928452905 Mr. Chen.service@sanyuejd.com
