Vacuum pump, particularly vane pump for compressible medium, has external housing, which separates pump inner area from pump outer area and in which outlet is formed for medium to connect pump inner area with pump outer area

摘要

The vacuum pump has an external housing, which separates pump inner area from pump outer area and in which an outlet is formed for the medium to connect the pump inner area with the pump outer area. A permanent opening of the outlet (3) is realized by a hole (15) in the valve body (9) and the outer circumference area (14) of the valve body lies completely on the external housing (1).