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Why roots vacuum pump unit needs water replenishment?

Addtime: 2020-07-18 Browse times: 1831

The make-up water of Roots vacuum pump unit can effectively work on the gas, and the efficiency is improved. The make-up water should enter at the highest point of the compression chamber at the end of the liquid work on the gas, so that the unit can obtain sufficient energy and start working again in the next cycle. So what's the reason for adding water?


1. To prevent the loss of the make-up liquid ring of Roots vacuum unit flowing out of the vent hole with the gas;


2. Prevent the end clearance between sealing pump body and impeller;


3. The compression heat produced by the compressed gas discharged from roots vacuum unit;


4. The cooling and lubricating packing, packing gland and other parts of Roots vacuum unit are damaged.


If there is a large amount of make-up water in Roots vacuum unit, the excess water will occupy part of the gas space (which can also be considered as the reason for the increase of water ring thickness), which will reduce the gas volume and exhaust pressure. Too much water also increases power consumption, reduces efficiency, and produces noise and vibration. The work of Roots vacuum pump unit is very unstable, and a large amount of water is ejected from the exhaust hole periodically and Pulsatively.


If the amount of make-up water of Roots vacuum unit is less, the compression heat in Roots vacuum pump unit can not be fully discharged, which will increase the temperature of water ring and upper gas, and reduce the gas volume and vacuum degree; if the water volume is too small, the loss of water ring can not be replenished, which not only further reduces the performance, but also stops working because the water ring cannot be formed.


In order to improve the working efficiency of Roots vacuum pump unit, it is necessary to make up water properly, not too much or too little, so as to ensure the good operation of the equipment.


It is recommended that you use roots vacuum pump unit, and it is best to operate according to the instructions of Roots blower manufacturer.


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