Protective Measures for Rotating Parts of Centrifugal Fans

Centrifugal fans are essential ventilation equipment widely used in industrial, commercial, and residential settings. Ensuring the safe operation of centrifugal fans, especially the protection of rotating parts, is crucial. Pengxiang HVAC Equipment Co., Ltd. has extensive experience in producing centrifugal fans, offering products that include high-pressure, medium-pressure, and low-pressure series, as well as high-temperature centrifugal fans. Below, we will detail the protective measures for different series of centrifugal fans.

High-Pressure Centrifugal Fans 7-28 Series

The 7-28 series high-pressure centrifugal fans are primarily used in applications requiring high pressure, such as air handling systems and boiler blowers. Due to their high working pressure and fast rotational speed, protective measures are particularly important.

1. Safety Guards: Install robust metal safety guards to prevent foreign objects from entering the fan and to protect operators from high-speed rotating parts.
2. Anti-Vibration Measures: Add shock-absorbing pads or use dampers on the fan base to reduce vibration impacts on the fan and surrounding equipment.
3. Lubrication System: Regularly check and maintain the lubrication system to ensure the bearings and other rotating parts are well-lubricated, preventing faults due to frictional heat.
4. Temperature Monitoring: Install temperature sensors to monitor the temperature of bearings and the motor in real-time, preventing overheating that could damage the equipment.

Medium-Pressure Centrifugal Fans 5-55 Series

The 5-55 series medium-pressure centrifugal fans are commonly used for industrial exhaust and ventilation. Their rotational speed and pressure are moderate, but strict protective measures are still necessary.

1. Protective Mesh: Install protective mesh at the fan inlet and outlet to prevent large foreign objects from entering the fan and damaging the impeller and other internal components.
2. Noise Control: Use silencers and soundproofing materials to reduce the noise generated during fan operation, protecting operators’ hearing health.
3. Regular Maintenance: Implement and adhere to a regular maintenance schedule to identify and resolve potential issues promptly, ensuring the long-term stable operation of the fan.
4. Anti-Corrosion Measures: For special environments with corrosive gases, use anti-corrosion materials for fan components and regularly maintain the anti-corrosion coating.

Low-Pressure Centrifugal Fans 4-73, 4-79 Series

The 4-73 and 4-79 series low-pressure centrifugal fans are widely used for ventilation, smoke exhaust, and dust removal. Although their pressure and rotational speed are relatively low, protection should not be overlooked.

1. Protective Mesh and Safety Guards: Like medium-pressure fans, low-pressure fans should have protective mesh at the inlets and outlets and safety guards around the impeller.
2. Motor Protection: Equip the motor with overload protection devices to prevent damage due to excessive current.
3. Regular Cleaning: Regularly clean the fan impeller and interior to prevent dust accumulation, which could affect fan efficiency and operational safety.
4. Balance Correction: Ensure the fan impeller is well-balanced to reduce vibration and noise caused by imbalance.

High-Temperature Centrifugal Fans

High-temperature centrifugal fans are used for ventilation in high-temperature environments, such as boiler exhaust and furnace ventilation. Protective measures need to address the impact of high temperatures on fan components.

1. High-Temperature Materials: Use high-temperature resistant materials for key components such as the fan impeller and bearings to ensure stable operation in high-temperature environments.
2. Cooling System: Install effective cooling systems, such as air or water cooling, to lower the temperature of bearings and the motor, preventing faults due to overheating.
3. High-Temperature Lubricants: Use special high-temperature lubricants to ensure good lubrication under high-temperature conditions, reducing friction and wear.
4. Thermal Insulation: Apply thermal insulation to the fan casing and ducts to reduce the impact of heat on internal components, extending the equipment’s service life.

Pengxiang HVAC Equipment Co., Ltd. is committed to providing high-quality centrifugal fan products while placing great importance on equipment safety protection. Through scientific design and strict protective measures, we ensure the safe, stable, and efficient operation of centrifugal fans in various complex environments. We hope the above information helps you better understand and implement protective measures for centrifugal fans.