What are the causes of vibration in belt driven centrifugal fans

Belt driven centrifugal fan is a common industrial equipment that drives the impeller to rotate at high speed through belt drive, thereby generating airflow. However, during use, belt driven centrifugal fans may experience vibration, which not only affects the normal operation of the equipment, but may also lead to equipment damage and safety hazards. So, what are the reasons for the vibration of belt driven centrifugal fans?

Firstly, the imbalance of the impeller is an important cause of vibration in belt driven centrifugal fans. The impeller is the core component of a centrifugal fan. If the center of gravity of the impeller is not on the axis, it will generate unbalanced torque, leading to equipment vibration. The reasons for impeller imbalance may be manufacturing errors, impeller wear, and dust accumulation on impeller blades.

Secondly, damage to bearings can also cause vibration in belt driven centrifugal fans. Bearings are important components that support the rotor. If the bearings are damaged or worn, it can cause the rotor to be unbalanced, leading to equipment vibration. The reasons for bearing damage may be poor lubrication, improper installation, or prolonged use.

In addition, the vibration of the motor and belt can also be transmitted to the belt driven centrifugal fan, causing equipment vibration. If the vibration frequency of the motor or belt is close to or the same as the natural frequency of the fan, resonance may occur, thereby exacerbating the vibration of the equipment. Therefore, when designing and installing belt driven centrifugal fans, it is necessary to consider the natural frequency of the equipment and the vibration frequency of the motor and belt to avoid resonance.

Finally, other factors such as weak foundation, loose installation bolts, and collision between impeller and housing may also cause vibration of belt driven centrifugal fans.

In summary, there are many reasons for the vibration of belt driven centrifugal fans, including impeller imbalance, bearing damage, motor and belt vibration, and weak foundation. It is necessary to use a professional vibration analyzer for vibration detection, and identify the problem through the spectrum. In order to ensure the normal operation and safety of the equipment, it is necessary to regularly inspect and maintain the equipment, timely detect and eliminate faults, and ensure the stability and safety of the equipment.