NEWS & BLOG
Maintenance and Usage Precautions for Vacuum Pumps
Category: Technical Support
Time: 2021-01-18
Summary: With the advancement of economy and technology, vacuum pumps are finding increasingly broad applications and playing a crucial role in various industrial processes, including vacuum filtration, vacuum water lifting, vacuum material feeding, vacuum evaporation, vacuum concentration, vacuum rehumidification, and vacuum degassing. Moreover, vacuum pumps feature a compact structure, reliable operational balance, and uniform flow rates. However, their efficiency is relatively low—primarily because the impeller consumes a significant amount of energy during the process of stirring liquids. Over prolonged use, certain components of the vacuum pump may suffer damage. When the extent of damage reaches a certain level, the pump will start emitting screeching noises and vibrations. A major cause of this issue is wear on the pump’s motor bearings or shaft. Therefore, it is essential to regularly inspect all pump components and replace any damaged parts. Additionally, if solid particles enter the pump chamber and cause blockage, this can also lead to similar symptoms; thus, it is necessary to thoroughly clean out any debris from the pump chamber. If the pump body and the motor shaft’s centerlines are not properly aligned before use, the coupling is likely to wear prematurely, eventually resulting in noise and vibration. Hence, it is critical to ensure that the pump body and motor shaft’s centerlines are accurately aligned—and replacing the coupling may also be required in such cases. Another situation that can cause noise and vibration in vacuum pumps occurs when the vacuum level becomes excessively high. In such cases, the noise tends to be particularly harsh and piercing. Therefore, if you hear an ear-piercing sound, it is highly probable that the vacuum level is too high. To address this, simply open the pump’s air relief valve to allow some air to enter the system.
With the advancement of economy and technology, the application scope of vacuum pumps has been expanding steadily. They play a crucial role in various industrial processes, including vacuum filtration, vacuum water lifting, vacuum material feeding, vacuum evaporation, vacuum concentration, vacuum rehumidification, and vacuum degassing. Moreover, vacuum pumps feature a compact structure, reliable operational balance, and uniform flow rates. However, their efficiency is relatively low, primarily due to the significant energy loss incurred when the impeller stirs the liquid. During prolonged use, certain components of the vacuum pump may suffer damage. Once the damage reaches a certain level, the pump will start emitting screeching noises and vibrations. A major contributing factor to this issue is the wear of the pump’s motor bearings or shaft. Therefore, it is essential to regularly inspect all pump components and replace any damaged parts. Additionally, if solid particles enter the pump chamber and cause blockages, this can also lead to similar symptoms. In such cases, the only solution is to thoroughly clean out any debris from the pump chamber. If the pump body and the motor shaft are used without proper alignment, the coupling is likely to wear prematurely, eventually resulting in noise and vibration. Hence, it is critical to ensure that the pump body and the motor shaft are accurately aligned; alternatively, the coupling itself can be replaced.
There’s another situation that can cause noise and vibration in a vacuum pump: when the vacuum level is excessively high, the resulting noise can be quite harsh. Therefore, if you hear a sharp, piercing sound, it’s very likely that the vacuum is too high. In such cases, simply open the air vent valve on the vacuum pump to let some air in, and the issue should be resolved.