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    Rotary positive displacement pump
    1.
    发明授权
    Rotary positive displacement pump 有权

    公开(公告)号：US12060882B2

    公开(公告)日：2024-08-13

    申请号：US17914904

    申请日：2021-03-26

    申请人： ALFA LAVAL CORPORATE AB

    发明人： Simon Cargill

    IPC分类号： F01C1/18 ,  F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C2/12 ,  F04C15/00

    CPC分类号： F04C2/123 ,  F04C2/126 ,  F04C15/0026 ,  F04C15/0073 ,  F04C2230/60 ,  F04C2230/604

    摘要： A rotary positive displacement pump includes a main body rotationally supporting two parallel, axially extending, shafts with gears in constant mesh condition, such that the shafts rotate in opposite directions. A rotor case body is connected to a front side of the main body and has a stationary interior pumping cavity, fluid product inlet and outlet openings, and two cylindrical rotor case hubs each receiving internally one of the shafts. A pair of rotors each have a rotor wing and a rotor drive element that is mounted torque proof on a rotor seat at an end region of one of the shafts. Each rotor seat pair has an axial abutment surface and a mounting surface. The pump also includes fasteners each engaging a mating section of one of the shafts and exerting an axial clamping force on one of the rotor drive elements against one of the axial abutment surfaces.