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How to reduce the noise of Roots blower?

To effectively reduce the noise of Roots blowers, it is first necessary to understand the main source of noise.

The noise of Roots blowers usually comes from the following aspects:


1. Mechanical noise

Mechanical noise is mainly caused by the movement and friction of the internal parts of the blower, including:

Bearing vibration

Gear engagement

Change of clearance between rotor and housing


2. Airflow noise

Air flow noise is generated by the gas flow and compression process inside the blower, mainly including:

Turbulent air flow at inlet and outlet

Pulsation during gas compression

Gas leakage between impeller and housing



3. Motor noise

The motor that drives Roots blowers is also an important source of noise, mainly including:

The sound of the motor itself

Coupling vibration of motor and blower


4. Resonant noise

When the blower's operating frequency is close to the natural frequency of other equipment or building structures, resonance may occur, resulting in increased noise.


In view of the above noise sources, we can take the following measures to effectively reduce the noise of Roots blowers:


1. Optimize the mechanical structure

Use high-precision machining technology to improve the matching accuracy of parts

Use high quality bearings to reduce running noise

Optimized clearance design between rotor and housing to reduce gas leakage


2. Improve the airflow channel

Optimize the design of inlet and outlet to reduce airflow turbulence

Use a silencer or muffler to absorb airflow noise

Install expansion joints in the piping system to reduce vibration transmission


3. Motor noise reduction measures

Choose low noise motor

Use an elastic coupling to reduce motor vibration transmission to the blower

Install motor soundproof cover


4. Sound insulation and vibration reduction treatment

Install a vibration cushion or damper on the blower base

Use soundproof enclosures or soundproof rooms to encapsulate the entire blower system

The surrounding walls and ceilings were treated with sound-absorbing materials


If you have any further questions about Roots blowers, please feel free to contact us.