Regulating nozzle with adjustable effective area baffle
US5312048A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1993 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Mar 25, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87378
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nozzle including a tubular nozzle body forming a centrally located liquid flow path, the body having an inlet end and an outlet end. Mounted centrally in the body within the flow path is a pressure-regulating mechanism including an axially located dual-pressure baffle. The baffle is located at the outlet end and forms a nozzle gap with a throat surface of the body. During operation, a spring biases the baffle to close the gap and the liquid pressure on the baffle operates to open the gap. Adjustably mounted on the baffle is a shield which is movable relative to the baffle between a normal pressure position and a low pressure position. In the normal pressure position, the shield forms a gap size appropriate for a normal supply pressure. In the low pressure position, the shield forms a gap having an increased size appropriate for a supply pressure which is substantially less than the normal supply pressure. In addition to changing the gap size, adjustment of the shield also changes the effective area over which the water pressure acts on the baffle. Apparatus is provided for increasing the effective baffle area during operation in the low pressure position, whereby the water pressu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.