GEAR WHEEL PUMP Russian patent published in 2015 - IPC F04C2/10 

FIELD: motors and pumps.

SUBSTANCE: invention relates to gear wheel pump. The gear wheel pump (1) for fluid supply has a gear wheel (3) (installed with a possibility of rotating on a supporting journal (4)) with an external toothing and geared ring (2) with internal toothing, which engage each other to create injecting action, and located in the common body (5) together with electrically commutated stator (7). The stator (7) concentrically surrounds the ring (2), and for creation of the electromotive force interacts with the ring-type magnetic circuit (6), which for creation of injecting action rotates together with the ring (2). The ring (2) is installed in the slide bearing (25) and for its fastening the ring-shaped part (11) is provisioned, which at least on its first surface (15) directed towards the ring (2) is designed as a slide bearing (25). The ring-shaped part (11) is press-fitted or is pasted in the body (5).

EFFECT: invention is aimed at creation of simple and cost-efficient solution for fixing of the gear wheel in the gear wheel pump with internal gearing.

5 cl, 5 dwg