PUMP ARRANGEMENT Russian patent published in 2018 - IPC F04D13/02 F04D29/58 

FIELD: engines and pumps.

SUBSTANCE: present invention relates to a pump arrangement, in particular a magnetic clutch pump arrangement. Arrangement comprises an inner chamber formed by a pump housing of the pump arrangement, sealing cup (10), hermetically sealing therein an enclosed chamber relative to the inner space, an impeller shaft rotated around axis of rotation (A), at one end of which an impeller is mounted, and on the other an inner rotor, and drive shaft (20) driven by a motor, and outer rotor (22) mounted on shaft (20), interacting with the inner rotor. Outer rotor (22) has hub (23), as well as first bearing element (28). Rotor (22) between hub (23) and element (28) has section (25) made in the form of a hollow cylinder. Fastener (35) has first external thread (37) at one end and second external thread (38) at the opposite end. Between threads (37 and 38) there is space (39), the diameter of which is larger than the diameters of threads (37 and 38).

EFFECT: invention is directed at creating a pump arrangement which, with rising temperature of the transported medium, while maintaining the explosion protection of the drive motor, would reduce the axial and radial structural space and allow for simpler installation.

7 cl, 3 dwg