Centrifugal pump, a shaft sleeve and a stationary seal member
US8337152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2008 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jul 16, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/106
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a centrifugal pump, a shaft sleeve and a stationary seal member for a static seal used in connection with a dynamic sealing of a centrifugal pump. The invention relates to a static seal the clearance of which may be adjusted while the pump is running. Especially the invention discusses the novel structure of such a static seal. A characterizing feature of a centrifugal pump comprising a pump housing (8), a shaft (6), an impeller attached on the shaft, a dynamic sealing (4) having a sealing chamber (12) and a repeller (14) mounted on the shaft (6), and a static seal (2) arranged in a shaft space (42) behind the dynamic sealing (4) as seen from the direction of the impeller, said static seal (54, 54′) comprising an axially adjustable seal cover (56) including a stationary seal member; and a rotary seal member arranged on the shaft (6), is that the seal cover (56) is provided with a flexible seal member (77, 92), whose counter member (68) is arranged in connection with a shaft sleeve (60) arranged on the shaft (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.