Perfected motor unit for pumping devices

摘要

The invention concerns a motor unit (1) of a pump (100), comprising a jacket (2) that is substantially cylindrical in shape and is coupled with a first cover (3) at the level of its first end (4) and with a second cover (5) interposed between its second end (6) and the lifting unit (101) of the pump (100) and removably fixed to the jacket through locking means (9). In the motor unit the locking means (9) comprise a plurality of through holes (10) made in the second cover (5), each one of which has its axis (y) inclined with respect to the longitudinal axis (x) of the jacket (2) and houses a fixing element (11) having its free end (12) facing towards the inside of the jacket (2) and inserted in a corresponding undercut area (13) defined in the jacket (2) and having its convex surface facing towards the outside, in order to counteract the free end (12) of the fixing elements (11).