| 摘要 |
The invention relates to a pump arrangement, more particularly a magnetic clutch pump arrangement, comprising an inner chamber (11) formed by a pump housing (2) in the pump arrangement (1); a containment shell (10) which seals an enclosed chamber (12) hermetically with respect to the inner chamber (11) formed by the pump housing; an impeller shaft (13) which is mounted in a plain bearing arrangement (19) and can be driven in rotation about an axis of rotation (A); an impeller (16) mounted on one end of the impeller shaft (13); a first bearing sleeve (26) connected to the impeller shaft (13) for conjoint rotation therewith; a second bearing sleeve (38) connected to the impeller shaft (13) for conjoint rotation therewith; a first bearing bush (27) which co-operates with the first bearing sleeve (26) via a radial bearing surface and is connected to the pump housing (2) or to a component (41) secured to the pump housing (2) for conjoint rotation therewith; a second bearing bush (39) which co-operates with the second bearing sleeve (38) via a radial bearing surface and is connected to the pump housing (2) or to a component (41) secured to the pump housing (2) for conjoint rotation therewith; and a retainer ring (31) mounted between the first and second bearing sleeves. According to the invention the retainer ring (31) has, in the end surface facing the first bearing bush (27), a first annular groove (32) which receives a first axial bearing ring (33), and, in the end surface facing the second bearing bush (39), a second annular groove (34) which receives a second axial bearing ring (35). |
