Ventilation duct vibration reduction measures which?

In order to reduce the influence of airflow vibration on the ventilation ducts, ventilation duct manufacturers generally adopt the following measures to reduce vibration:

First, because the large-scale centrifugal fan vibration in the operation of large, in order to make it in the operation of the vibration will not affect the surrounding environment, the fans to reduce vibration measures: fixed in the cement concrete mixer fan, fan and base Using spring shock absorber.

Second, to prevent fan vibration through the duct into the room, fan and pipe with three anti-cloth soft joints, to eliminate the ventilation caused by aerodynamic noise.