Centrifugal pump seal
US4621975A · kind A · utility
4Cited by
12References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1984 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Oct 25, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/162
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A centrifugal pump seal for providing a liquid seal to a vertically oriented pump drive shaft, including a bellows seal fixedly attached to the drive shaft and having a rotatable sealing ring as a part thereof, mated to a fixed sealing ring held in a seal housing, and a seal chamber surrounding the bellows seal and shaft, for containing pump liquid, wherein the fixed and rotatable seal rings and a portion of the seal housing are exposed to liquid contact for cooling, including a recirculating bleed line for continuously replenishing the liquid in the seal chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.