How to increase the service life of negative pressure fan

How to increase the service life of the negative pressure fan requires regular maintenance and inspection of the fan. In order to make the fan operate trouble-free, the following items of the fan should be regularly maintained and inspected. The gap period should be determined according to the type, use, working conditions, importance, reliability and other conditions of the fan. In order to maintain personal safety, fans need regular maintenance after shutdown.

1. In order to increase the service life, it is necessary to check and clean the casing

Check and clean the fan casing, check whether there is air leakage, whether the surface welding is collapsed, and clean the dust and oil inside.

2. Increase the service life of the fan, check the spindle

Check whether the spindle is bent and deformed, and whether the mating surface is worn. Replace the mandrel when needed.

3. In order to maintain the service life of the negative pressure fan, the impeller needs to be maintained

① Regularly clean the dust, dirt and other impurities on the impeller. Mainly when the fan is used to transport media containing viscous substances or dust, the impeller parts need to be cleaned every month. Otherwise, the accumulated impurities will destroy the dynamic balance of the fan impeller, resulting in increased fan vibration and even damage to parts.

② Check the wear, corrosion and deformation of the impeller of the fan, and replace the impeller if it is serious.

③ Check whether the connection between the impeller shaft head and the hub is reliable. If loose, it should be corrected.

④ Check whether the gap between the impeller, the air inlet and the casing is uniform.

⑤After the fan is overhauled, the balance of the impeller should be checked. If the dynamic balance is damaged, it should be readjusted.