Roots vacuum pump definition
Roots vacuum pump practical ability reflects the improvement of the process, according to strengthen the practical performance of the products, at the same time of product application performance into full play, to further expand the product is practical and effective promotion ability, to improve the application of advantage to driving the development of the overall performance of ascension, to enhance the use effect of product various aspects ability to ascend, through effective value performance ability of product development, fully reflected from the strength of the product, so as to make good use of the equipment in the application of power in the process of production.
Definition of roots vacuum pump:
Roz vacuum pump is a rotary volume vacuum pump. Its structure is evolved from the roots blower. It first appeared in Germany in 1944, and was used as a mechanical booster pump for a vacuum melting system with a large pumping speed in the range of 10 ~ 1000Pa. The roz vacuum pump is a mechanical vacuum pump with a pair of synchronous high speed rotating sole rotor. The pump cannot be pumped separately, and the front stage needs oil seal and water ring to be directly discharged into the atmosphere.
Roots vacuum pump principle:
The working principle is similar to the roots blower, which works when the suction port is connected to the vacuum vessel or vacuum system main pump. There is no contact between the rotor and rotor of the vacuum pump, between the rotor and the pump shell, and the gap is usually 0.1 ~ 0.8mm. No lubrication is required. The rotor type has circular arc, involute and cycloid. The volumetric utilization rate of the involute rotor pump is high, and the machining accuracy is easy to be guaranteed, so the rotor type is more involute. Roz vacuum pump speed can be up to 3450 ~ 4100 RPM; The pumping rate is 30 ~ 10000 litres/SEC (1 litre = 10-3m 3); Extreme vacuum: the single stage is 6.5 x 10-2 pa, and the double stage is 1 x 10-3 pa.
Roots vacuum pump classification:
According to the difference of the working pressure range, it can be divided into: low vacuum roz pump directly in the atmosphere; Medium vacuum roots pump (mechanical pump); High vacuum multistage roots pump. Our domestic consumption is mostly in the middle vacuum roots pump.