Double-spring and high-precision hysteretic pressure control valve
US10663982B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2018 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Mar 18, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/56
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed in the present invention is a double-spring and high-precision hysteretic pressure control valve, including an upper valve body, a lower valve body, a double-spring pressure adjustment valve, a spring energy storage linkage mechanism, and a main valve. The double-spring pressure adjustment valve includes a rough adjustment stud, a rough adjustment spring, a fine adjustment stud, a fine adjustment spring, a spring guide sleeve, and a pressure adjustment valve spool. The spring energy storage linkage mechanism includes a guide block, a valve spool control linkage, a tension spring, and a tension spring shift lever and a tension spring sliding hook. The valve spool control linkage is connected to the guide block at one end, and connected to a main valve spool drive rod via a pin at the other end. The tension spring sliding hook is mounted on the guide block, and one end of the shift lever is placed below the tension spring sliding hook so as to drive the tension spring sliding hook to move upwards, thereby controlling the state of the tension spring and enabling energy storage of the spring. The spring energy storage linkage mechanism make the valve spool to open and close m…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.