Explosion-proof centrifugal fan mainly consists of: impeller, housing, coupling, shaft. The impeller is the main working part of generating wind pressure and transferring energy. The casing is mainly used to introduce gas and discharge gas, and at the same time, part of the kinetic energy of the gas into pressure energy; The coupling is used to connect the motor to the fan and transfer the torque.
Reasons for resonance caused by fixed parts of explosion-proof centrifugal ventilator and treatment methods:
The reason:
1. The cement foundation is too light or poor grouting or the plane size is too small, which causes the fan foundation to be disconnected from the foundation, the anchor bolt is loose, and the base is not firmly connected so that the foundation stiffness is not enough;
2, fan base or volute just too low;
3. The inlet and outlet pipes connected with the fan are not supported and soft connected;
4, the adjacent facilities and the fan foundation is too close, or its just too small;
Treatment method:
1, strengthen the foundation or re-grouting, tighten the nut;
2, strengthen its stiffness;
3. Add support and soft connection;
4, increase the stiffness;
