IMPELLER PUMP Russian patent published in 2018 - IPC F04D9/04 F04D1/04 

FIELD: turbo-pump construction.

SUBSTANCE: invention relates to the field of turbo-pump construction. In impeller pump 2, body 1 is formed with a conical portion, in which impeller 3 with sleeve 4 is located. Pre-activated axial stage 5 with vanes 6 is installed before vane pump 2 and has a length l_as, defined by the relation: l_as = (2.2 ÷ 2.4) ⋅ D_outer ⋅ sinβ_bi, where D_outer is the outer diameter of the stage, β_bi – the angle of installation of the vanes at the inlet to the periphery.

EFFECT: cavitation qualities and efficiency of the vane pump increase with a relatively low head.

1 cl, 1 dwg