Flow regulating valve
US9435457B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2012 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Dec 31, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flow regulating valve includes a valve seat and a shell connected to the valve seat, a motor is provided in the shell, and the motor is connected to a screw rod. The screw rod is connected with a nut in a thread cooperation manner, the nut is connected with a valve rod, and the valve rod is movable in an axial direction to regulate an opening degree of a valve port on the valve seat. The whole of the nut or a lower portion of the nut is in clearance fit with the mounting groove in the valve rod in a radial direction. An internal wall of the mounting groove is provided with an annular position limiting groove, in which a position limiting component is provided. The design of the flow regulating valve is able to eliminate the coaxiality error between the screw rod and the screw nut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.