Combined immersion / Flachabsaug-rotary pump with a concentric impeller inlet opening

Combined immersion / Flachabsaug rotary pump (1) comprising: 1.1. an electric drive (2) with a drive housing (3), 1.2. a pump housing (4) having a centrally disposed casing inlet opening (5) and at least one housing outlet aperture (6), 1.3. a housing between the Gehauseein- and outlet openings (5, 6) arranged in the impeller (7) for liquid transport, 1.4. a device for adjusting the distance (10) of the impeller (7) to a mounting surface (11) of the pump (1) characterized, in that 1.5. the impeller (7) at least two superposed blade rings (8, 9) leading to the installation surface (11) of the pump (1) are spaced apart, and 1.6. the blade rings (8, 9) have a common, centrally disposed impeller inlet opening (39), wherein the inner circle of the blade rings (8, 9) form arranged a common and concentrically to the impeller (7) passage through which the liquid to be pumped into the blade rings (8, 9) occurs.