| 主权项 |
1. A scroll pump comprising:
a frame; an eccentric drive mechanism supported by the frame; an inner stationary plate scroll fixed to the frame and including a stationary plate having an outer side and an inner side, and a stationary scroll blade projecting axially in a first direction parallel to a longitudinal axis of the pump from the outer side of the stationary plate; an orbiting plate scroll including an orbiting plate having an outer side and an inner side, and an orbiting scroll blade projecting axially in a second direction, parallel to the longitudinal axis of the pump and opposite the first direction, from the inner side of the orbiting plate, the orbiting scroll blade being juxtaposed with the stationary scroll blade in a radial direction of the pump such that the stationary and orbiting scroll blades are nested, the orbiting plate scroll being coupled to the eccentric drive mechanism so as to be driven by the eccentric drive mechanism in an orbit about the longitudinal axis of the pump, and the orbiting plate scroll having a central portion and an outer peripheral portion extending around and seated on the central portion so as to be non-rotatable relative to but axially removable from the central portion, the central portion comprising a central section of the orbiting plate at which the eccentric drive mechanism is connected to the orbiting plate scroll, and the outer peripheral portion comprising the orbiting scroll blade, and an annular section of the orbiting plate; and a tip seal interposed between an axial end of the scroll blade of one of the inner stationary and orbiting plate scrolls and the plate of the other of the inner stationary plate and orbiting plate scrolls, whereby the tip seal is accessible by removing the outer peripheral portion of the orbiting plate scroll from the central portion thereof. |
