1. What is the function of the Oil-free Air Compressor vacuum pump? What types of vacuum pumps are generally used in refineries? The vacuum pump is made to create vacuum pressure in the gear or container that operates below ambient atmospheric pressure or high vacuum. Vacuum pumps commonly used in refineries consist of steam plane vacuum pumps, water ring vacuum pumps and reciprocating vacuum pumps.

2. What is the working principle of the steam aircraft vacuum pump? It contains a nozzle, a mixing chamber, an expansion chamber, and a pressure outlet. In operation, water vapor is normally sprayed from the nozzle in to the combining chamber at a high speed (1200-1500 m/s). At the moment, a particular negative pressure is generated at the nozzle, to ensure that the pumped gas is definitely flushed into the mixing chamber from the gas inlet and mixed with water vapor. And get some energy from the water vapor. When the blended gas stream enters the diffuser chamber, the velocity steadily decreases along the axis, and the pressure gradually raises along the axis stream until it really is discharged above the atmospheric pressure. Due to the continuous work, the gas in the equipment is continuously extracted, thus causing vacuum pressure (negative pressure) state in the equipment.

3. What are the features of the steam aircraft vacuum pump? The steam jet vacuum pump entrains the pumped gas at a high speed of water vapor, so it gets the characteristics of large pumping capacity, high vacuum, simple manufacture, convenient installation and maintenance, etc. Currently, the vacuum distillation unit of the refinery The majority of the vacuum pumps utilized are steam jet vacuum pumps.

4. What is the building of the water band vacuum pump? What is the working theory of the water ring 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.