Roots Vacuum Pumps Noise Troubleshooting
It includes the collision noise between the rotor and the rotor, the rotor and the pump body, and the rotor and the side cover. The main reasons are: insufficient shaft stiffness, radial displacement of the positioning of the rotor and gear on the shaft, excessive or small gear clearance, and excessive axial clearance of the bearing.
In addition to the machining accuracy of the gear itself, the factors affecting gear noise are the parallelism of the two rotor shafts on which the gear is installed.
In addition to the accuracy of the bearing itself, insufficient design may also increase the noise of the bearing, such as excessive installation interference of the inner and outer rings of the bearing, insufficient shaft rigidity, insufficient lubricating oil supply, and exposure to dust, water, corrosive gas and liquid pollution etc.
The noises emitted by the roots vacuum pump during operation are basically caused by collisions, wearing between its internal parts, and these parts that are prone to noise are also parts that are relatively easy to wear. Therefore, when the equipment is during overhaul and maintenance operations, user should focus on the maintenance of the pump spare parts.
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