Roots blower: causes of vibration, heat and noise
2021-06-05
Summary
Roots blower is a rotary piston displacement gas compressor, which consists of a nearly elliptical cylinder that can be contained with two wall panels, and can be equipped with an air inlet and an air outlet. A pair of impellers, which mesh with each other with a certain gap, rotate at a constant speed in reverse by means of timing gears. With the help of the engagement with the two impellers, the air inlet and the air outlet are separated from each other, and the air model fan moves the gas in the cylinder volume from the air inlet to the air outlet without internal pressure during the rotation process, so as to achieve the purpose of forced exhaust.
Roots blower is a rotary piston displacement gas compressor, which consists of a nearly elliptical cylinder that can be contained with two wall panels, and can be equipped with an air inlet and an air outlet.
A pair of impellers, which mesh with each other with a certain gap, rotate at a constant speed in reverse by means of timing gears. With the help of the engagement with the two impellers, the air inlet and the air outlet are separated from each other, and the air model fan moves the gas in the cylinder volume from the air inlet to the air outlet without internal pressure during the rotation process, so as to achieve the purpose of forced exhaust.
A certain gap is maintained between the two impellers, between the impeller and the wall plate, and between the impeller and the casing to ensure the normal operation of the Roots blower; if the gap is too large, blame the increase in the return flow of compressed gas through the gap, which affects The efficiency of the blower; if the gap is too small, thermal expansion may cause mutual friction and collision between the impeller and the casing, the impeller and the wall plate.
In the process of using Roots blower, vibration, heat, noise and other problems often occur, which has a lot to do with the working principle and structure of Roots blower.
Roots blower is mainly composed of gear pair, impeller, casing and other components. The main reason for vibration, heat and noise is that there are problems in the assembly of its main components.
The rotation of the Roots blower relies on the meshing of the gears of the main and slave shafts to rotate at a constant speed, driving the mutual rotation between the impellers, and then compressing the gas.
Therefore, the matching deviation between the center distance of the gear pair and the deviation of the center distance of the shaft hole of the gear box are the main reasons for the vibration, heat and noise of the roots blower.
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