Centrifugal fans use a high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction to convert kinetic energy into potential energy. In a single-stage centrifugal fan, gas enters the impeller from the axial direction, and the gas changes to a radial direction as it flows through the impeller, and then enters the diffuser. In the diffuser, the gas changes the direction of flow to cause deceleration, which converts kinetic energy into pressure energy. The increase in pressure mainly occurs in the impeller, followed by the expansion process. In a multi-stage centrifugal fan, a return flow is used to bring the airflow into the next impeller, resulting in higher pressure. Maintenance of the centrifugal fan during operation.
First, the maintenance work of the centrifugal fan:
a. It can be operated only when the fan equipment is completely normal.
b. If the fan equipment is started after the inspection, it is necessary to pay attention to whether the parts of the fan are normal.
C. Regularly remove impurities such as ash and dirt inside the fan and prevent rust.
d. In order to ensure personal safety, the maintenance of the fan must be carried out while parking.
Second, the precautions for the normal operation of the fan:
a. When the centrifugal fan is driving, stopping or running, if it is found to be abnormal, it should be checked immediately. If it is a minor fault, the cause should be found in time, and the problem should be eliminated. If the fault is found, it should be stopped immediately for maintenance.
b. In addition to the lubricant should be replaced after each inspection, the lubricant should be replaced according to the actual conditions under normal conditions.