DRY-TYPE VACUUM PUMP COMPRISING A DEVICE FOR SEALING AGAINST LUBRICATING FLUIDS, AND CENTRIFUGING ELEMENT EQUIPPING SUCH A DEVICE

摘要

The invention relates to a dry-type vacuum pump comprising at least one rotary shaft (11) supported by at least one lubricated bearing (5) and at least one device (9) for sealing against the lubricating fluids which can emanate from said bearing (5) so as to provide sealing in the region of the shaft passage, the sealing device (9) being mounted between the lubricated bearing (5) and a dry pumping stage (7), characterized in that said sealing device (9) comprises a centrifuging element (17) mounted securely in terms of rotation on said shaft (11) and comprising at least one through-duct (19) designed to separate the lubricating fluids from the fluid which can circulate from said bearing (5) towards the dry pumping stage (7).