Combined sealing device with magnetic fluid
US11261972B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2021 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Oct 22, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/4476
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A combined sealing device with magnetic fluid includes a housing having a chamber; a rotating shaft rotatably arranged in the chamber; a seal assembly fitted over the rotating shaft and located in the chamber, in which the seal assembly includes a brush seal part, a magnetic fluid seal part, and a labyrinth seal part all fitted over the rotating shaft and spaced apart from one another in an axial direction of the rotating shaft, the brush seal part being arranged adjacent to the sealing cavity, and the magnetic fluid seal part being arranged between the brush seal part and the labyrinth seal part; and an absorption part arranged in the brush seal part and configured to adsorb a sealing medium spilled from the sealing cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.