Select water ring vacuum pump considerations

The type of water ring vacuum pump mainly depends on the media used, the volume of gas required for operation, the degree of vacuum or the discharge pressure. There are two things to note when working with a water ring vacuum pump: 1. As far as possible, the vacuum level of the selected vacuum pump is required to operate in an area of ​​high efficiency, that is, at the critical required vacuum or critical required discharge pressure , So as to ensure that the vacuum pump can work according to the requirements of the conditions and requirements. Should be avoided in the vacuum pump maximum vacuum or maximum exhaust pressure near the range of operation. Operating in this area is not only inefficient, but also unstable and prone to vibrations and noise in the vacuum pump. For vacuum pumps with higher vacuum, cavitation often occurs within this area, and the obvious phenomenon that causes this phenomenon is noise and vibration in the vacuum pump. Excessive cavitation will lead to damage to the pump body, impeller and other parts, so that the vacuum pump can not work properly. It can be seen, when the required vacuum pump vacuum or gas pressure is not high, you can preferentially selected in the single-stage pump. If the vacuum or exhaust pressure requirements are high, the single-stage pump often can not meet, or require the pump at higher vacuum conditions still have a larger amount of air, which requires the performance curve at a higher degree of vacuum is relatively flat, Use two pumps. If the degree of vacuum above -710mmHg, optional Roots water ring vacuum unit as a vacuum device. 2, according to the amount of exhaust system required Correct choice of vacuum pump If you have selected the type of vacuum pump or vacuum unit, but also need to be based on the amount of system exhaust to choose the right model.

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