Plunger type water pump

US8696337B2 · kind B2 · utility

Assignee

• Huazhong University of Science and Technology · CN

Inventors

• Yinshui Liu · Hubei, CN
• Defa Wu · Jinjiang, CN
• Zhuo Jiang · Beijing, CN
• Xiaofeng He · Zhengzhou, CN
• Bihai Zhu · 红钢城街道, CN
• Zhi-Heng Guo · 红钢城街道, CN
• Xuyao Mao · 红钢城街道, CN
• Jingyue Chen · 红钢城街道, CN

Key dates

• Filing date: Sep 28, 2010
• Grant date: Apr 15, 2014
• Expiry date: May 5, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B5/02
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A plunger type water pump mainly comprises a cavity body, a rotary main shaft and a plunger flow-distributing unit. The plunger flow-distributing unit comprises a flat valve assembly, a plunger-shoe assembly and a supporting valve assembly. The plunger-shoe assembly divides the cavity body into a high-pressure cavity and a low-pressure cavity independent of each other. The high-pressure cavity is in fluid communication with the flat valve assembly; and the low-pressure cavity is in fluid communication with the supporting valve assembly. The high-pressure water and the low-pressure water are independent of each other. This arrangement ensures a high volumetric efficiency of the water pump under ultra-high-pressure conditions and provides fluid support and lubrication for a friction coupling under high-speed heavy-load conditions to prolong the service life of the water pump.