Basic overview of the ring vacuum pump The vacuum pump is a rotary variable capacity. The vacuum pump must have a foreline pump to use it. It can be used in a wide pressure range and has a large pumping speed. It is not sensitive to dust and water vapor in the extracted gas. It is widely used in metallurgy. , chemical, food, electronic coating and other industries. Features: (1) Large pumping speed over a wide range of pressures; (2) The rotor has good geometric symmetry, so the vibration is small and the operation is stable. There is a gap between the rotor and between the rotor and the casing, no lubrication, and the friction loss is small, which can greatly reduce the driving power, thereby achieving a higher rotational speed; (3) Oil seal and lubrication are not required in the pump chamber, which can reduce the pollution of the vacuum system by oil vapor. (4) There is no compression in the pump chamber, no exhaust valve. The structure is simple and compact, and is insensitive to dust and water vapor in the pumped gas; (5) The compression is relatively low, and the effect on hydrogen gas pumping is poor; (6) The surface of the rotor is a curved cylinder with a complicated shape, which is difficult to process and inspect. External Rotor Motor,Outer Rotor Motor,External Rotor,External Rotor Fan Wentelon Micro-Motor Co.,Ltd. , https://www.wentelon.com