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1. (WO2018107560) MINIATURE HYDRAULIC SUSPENSION MECHANICAL PUMP

Pub. No.:    WO/2018/107560    International Application No.:    PCT/CN2017/071675
Publication Date: Fri Jun 22 01:59:59 CEST 2018 International Filing Date: Fri Jan 20 00:59:59 CET 2017
IPC: F04D 13/06
F04D 29/42
Applicants: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
华中科技大学
Inventors: LUO, Xiaobing
罗小兵
LIU, Falong
刘发龙
DUAN, Bin
段斌
WU, Han
吴晗
HU, Jinyan
胡锦炎
YU, Xingjian
余兴建
Title: MINIATURE HYDRAULIC SUSPENSION MECHANICAL PUMP
Abstract:
Disclosed is a miniature hydraulic suspension mechanical pump, comprising a volute (1), an upper end cover (3), a vane wheel (2), a brushless motor, a waterproof bushing (6) and a water-lubricated spiral groove thrust bearing, wherein the volute (1) is provided with a water inlet channel and a water outlet channel, and the upper end cover (3) is provided with a central water inlet hole (3a); the brushless motor comprises a motor outer casing (11), coils (10), a magnet rotor (9), a rotor bushing (7) and a rotor rotary shaft (8); and a set of water-lubricated spiral groove thrust bearings is respectively provided above and below the magnet rotor (9), and each set of water-lubricated spiral groove thrust bearings comprises a static ring (4) and a moving ring (5) having a spiral-shaped screw. When the pump is operating, a liquid film can form between the static ring (4) and the moving ring (5), making the magnet rotor be suspended, and a liquid film can also form between an outer wall of the rotor bushing and an inner wall of the waterproof bushing, thus enabling contactless suspension of the magnet rotor. This prevents the wear caused by the use of a contact-type bearing, thus increasing the service life of the miniature hydraulic suspension mechanical pump.