When the centrifugal fan is installed in the room or the roof, the noise produced by mechanical vibration and high-speed air flow during operation will affect the surrounding environment and even cause harm to human beings, so it is necessary to deal with vibration reduction. The vibration reduction method of centrifugal fan is mainly composed of spring, cover, base and so on.
Shock absorbers should generally be installed under the shock absorber plate or under the steel support of the fan profile made. The damping plate is a prefabricated reinforced concrete slab, which can make several shock absorbers installed under the plate uniform. Shock absorbers should be installed according to the wind volume of the fan, but not less than four. The type selection of shock absorber must be determined by dynamic calculation, and the type, specification and quantity of shock absorber must not be changed at will during construction.
When the shock absorber is installed under the vibration absorber plate, it should be kept in the center position of the reserved hole, not to be offset, and should be kept flat on the ground or on the foundation, so that the force of the absorber is uniform.
Spring shock absorber has the characteristics of high resistance and low frequency. It has better effect on eliminating external shock vibration.www.jnblower.com