公开(公告)号：US11371522B2

公开(公告)日：2022-06-28

申请号：US17425334

申请日：2020-07-02

申请人： China University of Mining and Technology ,  SHANDONG ZHANGQIU BLOWER CO., LTD.

发明人： Fangwei Xie ,  Shupeng Fang ,  Zuzhi Tian ,  Gang Shen ,  Zhencai Zhu ,  Haifang Zhang ,  Honglei Li ,  Chunjie Xu ,  Wancai Zhou

IPC分类号： F04D29/22 ,  F04D29/68 ,  F04D7/04 ,  F04D13/06 ,  F04D29/62 ,  F04D29/20 ,  F04D29/043 ,  F04D29/12 ,  F04D29/58 ,  F04D29/06 ,  F04D13/08 ,  F04D29/28 ,  F04D29/10 ,  F04D13/02 ,  F04D29/66 ,  F04D29/24

摘要： Disclosed is a permanent magnet direct-drive slurry pump based on gas film drag reduction, which includes a permanent magnet motor, a main shaft, an impeller, and a valve block. The permanent magnet motor includes a housing, a stator core, stator windings, a rotor core, and a permanent magnet. The rotor core and the impeller share the main shaft, and an airflow channel is provided inside the main shaft. The impeller includes a front cover plate, a back cover plate, and blades. The blades are modularly manufactured, and blade gas jet holes and hemispherical pits are provided on the pressure surface. The airflow channel in the main shaft is communicated with the blade gas-jet holes. The valve block is disposed at the tail end of the main shaft so as to control gas exhaust and prevent liquid from entering the shaft. The present invention has such advantages as a small size, high efficiency, and strong wear resistance.