PUMPING DEVICE, AT LEAST, FOR PUMPING A FLUID, AND A PUMP CONTAINING SUCH PUMPING DEVICE Russian patent published in 2023 - IPC F04B43/00 F04B43/08 F04B43/12 F04C5/00 F04B53/22 

FIELD: pump devices.

SUBSTANCE: pumping device, at least for pumping a fluid medium, with at least one pumping chamber (18), at least one dimensionally stable pumping chamber element (20), at least partially delimits the pumping chamber (18), and at least one resiliently deformable and, in particular, annular pumping element (22), in particular a pumping membrane, which limits the pumping chamber (18) together with the pumping chamber element (20) and is placed on the pumping chamber element (20). The pumping element (22) has at least one sealing extension (90), which is integral with the main body (76) of the pumping element (22) and is at least partially located in the sealing groove (88) of the pumping chamber element (20) when the pumping element (22) is placed on the pumping chamber element (20). The pumping chamber element (20) has an opposite surface (74) for interaction with the pumping surface (78) of the main body (76) of the pumping element (22) to pump the fluid. The specified opposite surface extends over at least three circular arc-shaped sections, which are placed in series, in particular when viewed in cross section, and at the same time at least one edge area (92) of the pumping chamber element (20), limiting the sealing groove (88) is placed so that it borders directly on at least one of the three circular arc-shaped sections.

EFFECT: ensuring the availability of a pumping device and/or a pump that has(ve) improved properties with respect to the primary pumping function.

9 cl, 10 dwg