From what respect began to understand the roots vacuum pump _

roots vacuum pump is a positive displacement pump rotor. In the pump rotor shape symmetrical cavity 2, as described in the rotor of two lobes, and four leaf. Described in the opposite direction by two rotor rotate each other synchronously driven gear shaft. Without mutual contact of the rotor, the rotor and the pump chamber wall is also contact, there is usually a clearance of 0. 15 ~ 1. 0 mm of clearance is rely on pump chamber sealing.

as friction roots vacuum pump chamber, the rotor high-speed operation, general 1500 ~ 3000 RPM, but no lubricating oil, processing oil extraction can be clean. Limited bearing and gear lubrication pump, as well as the dynamic seal. No pump reciprocating motion component, it can well realize the dynamic balance. Therefore, stable running roots vacuum pump, high speed, small volume amplification pumping speed.

roots vacuum pump at home and abroad at present, most of the horizontal structure, the pump inlet port, the outlet, in high gravity horizontal structure, the stability of such low center. Two roots vacuum pump, the relative rotation by synchronizing precision gear to realize rotor.

roots vacuum pump drive is mostly direct coupling, big pump is belt transmission. The motor and gear drive, set in the rotor shaft, easy to install and remove the sides. Transmits the drive shaft torque is big, shaft should have sufficient strength and rigidity, described in the rotor shaft and combine the solid. Roots vacuum pump seal is crucial, the movable external extension of the drive shaft and rotor bearing and set the seal between the two pump chamber, the setting of each pump chamber has a static sealing cap.

avoid misoperation roots vacuum pump, and more generally with the bypass valve. According to the special pump and the gearbox oil pump bearing components and the structure of the separation chamber.

roots vacuum pump during the compression of the heat generated by the pump in the pump body and rotor. Difficult to transfer heat to the outside of the mentioned pump rotor, and the heat pump can easily dissipate into the surrounding atmosphere. Hence the temperature difference between the rotor and the pump body. Intensified by the rotor's thermal expansion. When pump load increases, the gap will disappear the rotor expander, stuck. So the air cooling of the roots vacuum pump, cooling gas heat or cooling air directly to the rotor, thus reduce the difference in temperature between rotor and shell, so as to improve the heat resistance of the roots vacuum pump.

this air cooling roots vacuum pump can be used for high pressure difference and than in the case of this kind of pump has simple structure, high compression work, pump outlet of the cooler, easy to repair and replacement. Because of the heated evenly, the clearance between rotor and shell can keep small, to improve the volumetric efficiency of the pump.