Self-sealing valve assembly to facilitate unplugging of a centrifugal cleaner
US4356084A · kind A · utility
18Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1979 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | Apr 6, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04C5/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A self-sealing element is provided in the outer wall of the discharge chamber of a centrifugal cleaning apparatus opposite the rejects discharge outlet. When a blockage occurs at the discharge outlet, a long needle-like nozzle is inserted through the sealing element to the blockage. Water or air under pressure is expelled from orifices in the nozzle and breaks up the blockage. After the nozzle is withdrawn, the sealing element, which may be formed of a silicone rubber, reseals itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.