| 摘要 |
Screw type liquid ring pump including a pump housing ( 9 ) with an inlet part ( 3 ) and an outlet part ( 11 ) and rotating helical screw rotor ( 8 ) inside the housing. The rotor is connected with a shaft ( 7 ) as well as a driving unit in the form of motor, preferably an electric motor ( 2 ), whereby the pump ( 20 ) with the pump housing ( 9 ) represents an elongation of the motor ( 2 ) with the motor housing thus representing an integrated or one piece unit. The shaft seal ( 22, 23 ) is provided wholly or partially in an annular space ( 24 ) provided within the rotor ( 8 ), whereby one end of the seal rests against an annular part ( 25 ) of the screw rotor provided in the annular space ( 24 ) between the rotor and the shaft, and its other end is tightly engaged against an inwardly protruding part ( 21 ) at the outlet end of the pump.
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