Fire pump vibrate seriously , knowing the reason is the key to improve

2018-04-05

 Fire pump vibrate seriously , knowing the reason is the key to improve

After using the fire pump for a period of time, you will find that the action becomes more and more clumsy during the operation. The most obvious one is that the vibration becomes frequent and more serious. So, what is the reason for the serious vibration of the fire pump?


Fire pump vibration serious cause one: impeller imbalance

We all know that the impeller is one of the indispensable main parts in the operation of the fire pump. Among them, the imbalance of the impeller is one of the key factors that cause the vibration of the fire pump. The reason why the impeller is unbalanced during use can be roughly divided into two types: one is the wear of the impeller, and the other is the fouling of the impeller. Therefore, the first measure to reduce the vibration of the fire pump is to descale the impeller.
Vibration serious fire pump for two reasons: the fire pump and motor shaft misalignment

Practice has proved that when the fire pump and the motor shaft are operated at different centers, the vibration is large. Although the ideal concentricity between the fire pump and the motor shaft is not possible, it is one of the foundations for reducing the vibration of the fire pump as much as possible during installation. In addition, in order to reduce the vibration frequency during the operation of the fire pump, it is recommended. Check whether the fire pump and the motor shaft are concentric before the fire pump is operated. Once the difference is found, it is recommended to adjust it immediately and align the fire pump with the motor shaft.

Fire pump vibration serious cause three: fire pump shaft bending

There are many reasons for the bending of the fire pump shaft. For example, the strength of the shaft is not enough, the length to diameter ratio of the shaft is too large, resulting in insufficient rigidity of the shaft, or because the distance between the support points of the shaft is too large, etc. The reason is that if the fire pump shaft is bent, the new shaft should be replaced at the first time. On the one hand, it avoids the vibration of the fire pump operation, on the other hand, it reduces the occurrence of other faults.

Fire pump vibrate seriously , knowing the reason is the key to improve