1. What is the part of the vacuum pump? What kinds of vacuum pumps are commonly used in refineries? The vacuum pump is designed to create a vacuum in the equipment or container that functions below ambient atmospheric pressure or high vacuum. Vacuum pumps typically used in refineries consist of steam aircraft vacuum pumps, water band vacuum pumps and reciprocating vacuum pumps.
2. What’s the working principle of the steam jet vacuum pump? It consists of a nozzle, a mixing chamber, an growth chamber, and a pressure wall plug. In operation, drinking water vapor is definitely sprayed from the nozzle into the mixing chamber at a high speed (1200-1500 m/s). At this time, a certain negative pressure is generated at the nozzle, so that the pumped gas is normally flushed into the mixing chamber from the gas inlet and blended with drinking water vapor. And get some energy from the water vapor. When the blended gas stream enters the diffuser chamber, the velocity gradually decreases along the axis, and the pressure steadily increases along the axis movement until it is discharged above the atmospheric pressure. Because of the continuous work, the gas in the equipment is continuously extracted, thus causing a vacuum (negative pressure) state inside the equipment.
3. What are the features of the 
steam jet vacuum pump? The steam jet vacuum pump entrains the pumped gas at a high speed of drinking water vapor, so it gets the Rotary Vane Vacuum Pump characteristics of huge pumping capacity, high vacuum, simple manufacture, convenient installation and maintenance, etc. Presently, the vacuum distillation device of the refinery Most of the vacuum pumps used are steam aircraft vacuum pumps.
4. What is the building of the water ring vacuum pump? What is the working basic principle of the water band vacuum pump? The water ring vacuum pump comprises a pump casing, an impeller, a water ring, a suction chamber, a discharge chamber, and a vent hole.