ELECTRIC PUMP ADJUSTABLE BLADE HAVING BUILT-IN IMPELLER

WIPO Patent Application WO/2021/253651

A1

An electric pump adjustable blade having a built-in impeller, comprising a blade body (1). The angle of the blade body (1) is adjusted by means of a lever-type adjuster structure. The lever-type adjuster structure comprises a control shaft (2) provided at the root of the blade body (1). The other end of the control shaft (2) is connected to a crank (3). The other end of the crank (3) is rotatably connected to one end of a connecting rod (4). The other end of the connecting rod (4) is rotatably connected to an operation frame (5). A force transfer rod (6) for driving the operation frame (5) to move is provided on the operation frame (5). The electric pump adjustable blade having a built-in propeller is compact and simple in equipment, low in manufacturing cost, and low in installation and maintenance difficulty. Adjusting the angle of the blade can not only effectively reduce the vibration generated when a unit is started so as to facilitate the starting of the unit, but also reduce the requirements for pull-in torque, and can achieve efficient operation of an electric pump within different lift ranges and meet the drainage requirements under special conditions.

LIANG LIANG (CN)
ZHU QINGLONG (CN)
LI XING (CN)
JIN LEI (CN)
JIA XIAOJIAN (CN)

PCT/CN2020/114549

December 23, 2021

September 10, 2020

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HEFEI HENGDA JIANGHAI PUMP CO LTD (CN)

F04D29/18; F04D15/00

CN111577650A	2020-08-25
CN210686324U	2020-06-05
CN101787978A	2010-07-28
CN106460538A	2017-02-22
CN110500319A	2019-11-26
CN103452866A	2013-12-18
CN204646769U	2015-09-16
JP2002188600A	2002-07-05
US20070059161A1	2007-03-15

BEIJING HESHINIP INTELLECTUAL PROPERTY OFFICE (CN)

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