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    HIGH-TEMPERATURE MAGNETIC DRIVE PUMP AND DESIGN AND DEVELOPMENT METHOD THEREFOR
    4.
    发明公开
    HIGH-TEMPERATURE MAGNETIC DRIVE PUMP AND DESIGN AND DEVELOPMENT METHOD THEREFOR 审中-实审

    公开(公告)号：EP4411142A1

    公开(公告)日：2024-08-07

    申请号：EP23837124.9

    申请日：2023-10-19

    申请人： Hangzhou Dalu Industry Co., Ltd.

    发明人： YANG, Jianqing ,  LI, Xiaoqin ,  LAI, Xiaofeng ,  CAO, Huanfang ,  WANG, Weifang

    IPC分类号： F04D13/06 ,  F04D1/00 ,  F04D29/046

    CPC分类号： Y02B30/00

    摘要： The present disclosure relates to a high-temperature magnetic drive pump and a design and development method therefor. The method includes the following steps: uniformly arranging a plurality of spiral gaps of the same shape and length in a circumferential direction on a surface of an inner hole of a bearing seat of the magnetic drive pump, and arranging openings of the spiral gaps on the surface of the inner hole, with tail ends located in a base of the bearing seat; calculating differential expansion at a mating surface between the bearing seat and a sleeve bearing from room temperature to a design temperature required by the magnetic drive pump; determining a size of the inner hole of the bearing seat according to the differential expansion, an outer diameter of the sleeve bearing, and interference requirements at the design temperature; and checking a strength of a supporting sheet for the bearing seat and continuously adjusting a structural size and shape of the supporting sheet until a stress on the supporting sheet is less than or equal to an allowable stress of a bearing seat material. The present disclosure meets the requirements of leak-free medium delivery under high temperature and variable temperature conditions, and has the advantages of low operating vibration, high efficiency, high reliability, and convenient assembly and maintenance.