Valve plate structure of an axial plunger pump
US5727441A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1995 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Jan 20, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B1/2042
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved valve plate structure for use in axial plunger pumps is disclosed. It comprises: (a) a valve plate, which comprises a suction port, a displacement port, and a pressure build-up zone therebetween; (b) a valve cover, which is in close contact with the valve plate, comprises a suction port at a location corresponding to the suction port of the valve plate and a displacement port at a location corresponding to the displacement port of the valve plate; (c) a flow-diverted channel formed in the pressure build up zone of the valve plate; (d) a through hole provided in the bottom of the flow-diverted channel penetrating through the bottom part of the valve plate; (e) a guided channel formed in the valve cover at an interface between the cover and the valve plate abutting the through hole of the flow-diverted channel. The guided channel comprises a receptacle, which can be connected to the guided channel via the through hole, and an oil guided ditch which connects the receptacle with the second displacement port of the cover, whereby a spring-resisted seal device is provided in the receptacle of the guided channel of the valve cover the spring-resisted seal device is structured …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.