What is the overall structure of a fire-rated ventilation cabinet centrifugal fan?

What is the overall structure of a fire-rated ventilation cabinet centrifugal fan?

1. The fire-rated ventilation cabinet centrifugal fan consists of a housing, main shaft, impeller, roller bearing transmission system, and motor. 2. Fire-rated ventilation cabinet centrifugal fan base: Constructed from thick plate, available in personnel-type and semi-enclosed types. The semi-enclosed type facilitates maintenance. 3. Impeller: Composed of blades, flat front plate, and flat rear plate. 4. Motor Rotor: Undergoes static and dynamic balancing to ensure smooth rotation and optimal performance. 5. Transmission System: Comprises the main shaft, rolling bearing housing, rolling bearings, and belt pulley (or coupling).