| 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) with a central longitudinal axis (B) which hermetically seals an enclosed chamber (12) with respect to the inner chamber (11) formed by the pump housing (2); an impeller shaft (13) that can be driven in rotation about an axis of rotation (A); an impeller (16) mounted on one end of the impeller shaft (13); an inner rotor (17) mounted on the other end of the impeller shaft (13); and an outer rotor (24) which is mounted on a drive shaft (20) and co-operates with the inner rotor (17); wherein the containment shell (10) has a base (26) with at least one dimple (31) extending into the chamber (12). According to the invention the at least one dimple (31) is radially spaced from the central longitudinal axis (B) of the containment shell (10). The invention also relates to a method for producing a containment shell for a pump arrangement, more particularly a magnetic clutch pump arrangement, wherein the containment shell (10) is produced by a deep drawing process or a casting process, and wherein at least one dimple (31) which is radially spaced from the central longitudinal axis (B) of the containment shell (10) is created in the base (26). |
