Reciprocating pump with malfunction detecting apparatus
US6742994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2002 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Jul 24, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2205/05
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A reciprocating pump which is capable of detecting abnormalities in the sucking and discharging of fluid, such as the exhaustion of oil or the clogging of oil on the discharge side, by making use of detecting means which is inexpensive and relatively simple in structure and which can be operated without being detrimentally influenced by the bubbles that may be included in the fluid, while making it possible to minimize the noise generated by external vibrations. In this reciprocating pump, where the sucking and discharging of fluid are effected by making use of a reciprocating member, malfunction-detecting means formed of a piezoelectric element is provided for detecting a pressure fluctuation on a discharge side of the pump, and the pressure fluctuation of fluid being delivered from an discharging port is transmitted via a rigid pressure-receiving member to the piezoelectric element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.