Magnetic liquid sealing device resistible to axial and radial vibration
US11616412B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 4, 2022 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Jan 4, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a magnetic liquid sealing device. When a rotating shaft of the device axially vibrates, an outer ring of a bearing may not be provided with a rim, and a J-shaped bush and U-shaped sleeve ring can have relative displacement in an axial direction. When the rotating shaft radially vibrates, the U-shaped sleeve ring may deviate radially to allow sealing gaps, so as to prevent a bump between a pole shoe and J-shaped bush. Under action of a support spring and axial spring, sealing rings can be pressed to allow for sealing, and the U-shaped sleeve ring may not be in direct contact with an end cap, so as to avoid face friction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.