In single-stage pumps, the limit pressure and use of pumps are different due to the different structure and parameters. Rotary vane vacuum pump has been widely used and continuously improved. In the aspect of pump structure, in order to prevent oil return during shutdown, some have check valves that can automatically cut off the oil circuit, some have cut-off valves of intake passage, and some have oil pumps and control structures that can automatically cut off the air circuit when the pump opening ballast suddenly shuts down to keep the pump mouth in a vacuum state.
In terms of accessories, there are population filters, dust filters, steam condensation traps and chemical traps for mist eliminators, odor filters, blocking broken glass and other sundries. There are temperature control valves to control pump temperature to improve steam extraction rate and protect pump temperature control water volume. Speaking of rotary vane vacuum pump, in fact, it is very familiar to many people, probably because of its variety and wide distribution. Rotary vane vacuum pump, vacuum pump usually has dry screw vacuum pump.
Water ring vacuum pump, reciprocating vacuum pump, rotary vane vacuum pump and other types. With the development of science and technology, the use of vacuum pump is more and more extensive. Rotary vane vacuum pump uses eccentric rotor to drive vanes, and the volume of different chambers in the pump changes, so that the internal pressure changes. Rotary vane vacuum pump. At present, it is the most widely used vacuum pump, among which the role of vacuum pump oil, another working part product of rotary vane vacuum pump, is also very important. If the quality of rotary vane vacuum pump oil is poor or mixed with impurities, it will scratch and corrode the internal part of the pump with the flow, while the vacuum pump.
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