Conventional molecular pumps use bearings to ensure high speed rotation of blades. The new type of molecular pump adopts magnetic suspension structure, which makes the blade speed increase continuously, and makes the molecular pump suitable for ultra-high vacuum system, and prolongs the service life of the molecular pump.
Compared with oil seal rotary vane pump and turbine dry pump, molecular pump has cleaner working environment and can achieve extremely high vacuum. However, the molecular pump can not work at atmospheric pressure, must be able to work at atmospheric pressure and other rough vacuum pumps (oil seal rotary vane pump or turbine dry pump) combined use. Molecular pumps are complex in structure and expensive in price. Vibration will occur when rotating at high speed.
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