Adjustable wear ring for a centrifugal pump
US4208166A · kind A · utility
13Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1978 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | May 15, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19702
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An adjustable wear ring between a pump impeller and the pump casing is provided which is rotatable relative to the casing for effecting an adjustment of the wear ring with respect to the impeller to restrict leakage between the high pressure and low pressure chambers of the pump. Spiral groove formed on the periphery of the wear ring right engage with an action pin extending radially from the casing bore to effect controlled axial movement of the wear ring. A pin is inserted through the wear ring to engage the bore of the casing to lock the wear ring in adjusted position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.