What are the reasons for the large vibration of special fans?

The fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Fan is the abbreviation for gas compression and gas transportation machinery in China. Generally speaking, fans include ventilator, blower and wind generator.

Fans are widely used in ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and induced air of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances ; The drying and selection of grains, the wind source of the wind tunnel and the inflation and propulsion of the hovercraft.Dual Inlet Centrifugal Fan Suppliers

1. The vibration caused by the dynamic and static imbalance of the rotor is not only related to the quality of manufacturing, installation and maintenance, but also related to asymmetric corrosion and wear during operation, uneven dust accumulation on the blades, bending of the rotating shaft, and original rotor The balance weight moves or falls off and the air volume on both sides of the double-sided air inlet fan is not balanced.

2. The fan and motor coupling are not centered correctly or the coupling pin is loose, causing the motor and fan shaft to not be on the same centerline.

3. The fasteners of the rotor are loose or the clearance of the movable part is too large, the clearance between the shaft and the bearing bush is too large, and the fixing nut of the rolling bearing is loose.

4. The foundation is not firm or the rigidity of the base is insufficient, such as poor casting quality of the foundation, loose anchor bolts or shim irons, weak base connection or loose connection nuts, and poor rigidity of the base structure.