Coupling arrangement

Abstract

Coupling arrangement (1), in particular a double coupling, comprising a pump impeller (2) and a shaft (3), in particular a rotor, characterized in that the pump impeller (2) is fixed to the shaft (3) by means of a bayonet fitting (4), wherein the bayonet fitting (4) comprises a first means (5) and at least a second means (6), wherein the first means (5) and the second means (6) interlock, wherein the first means (5) is designed as a bayonet and the second means (6) is designed as a counterpart that can be inserted into the bayonet, wherein the shaft (3) comprises the first means (5) and the pump impeller (2) comprises the second means (6),wherein the first means (5) is arranged on an outer side (9) of the shaft (3) and the second means (6) is arranged on an inner side (10) of the pump impeller (2), or wherein the first means (5) projects from an outer side (9) of the shaft (3) and the second means (6) projects from an inner side (10) of the pump impeller (2), wherein the first means (5) has at least one opening (7) to allow the second means (6) to pass through the first means (5) and has at least one recess (8) offset from the opening (7) to allow the second means (5) to engage in the recess (8) of the first means (5).