Bi-direction rotatable face seal with spiral grooves
US6726213B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 17, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jan 17, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3412
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bi-direction rotatable face seal with spiral grooves is provided comprising: a rotating ring with a sealing face sealed and fixed on a rotary shaft; a stationary ring with a sealing face mounted in a casing, which is sealed and axially aligned by means of an elastomeric O-ring, a thrust ring, springs and anti-rotating pins; the sealing face of the stationary ring is pushed into engagement with the sealing face of the rotating ring to form a sealing interface; sealing fluid is located on high pressure side of the sealing interface; the rotating ring can rotate relative to the stationary ring in bi-direction without contact. The spiral groove groups near a high pressure side are arranged on at least one sealing face of the rotating ring and the stationary ring; the equally-spaced spiral groove groups with segment lands distribute in circumferential direction; each spiral groove group is composed of one radial fluid feed-in groove and at least three rows of spiral grooves with spiral lands arranged in radial direction at equal pitch; the spiral grooves with spiral lands distribute symmetrically or quasi-symmetrically on the left side and the right side of the radial fluid feed-in gr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.