Ultrasonic dispersion nozzle with internal shut-off mechanism having barrier-fluid separation means incorporated therewith
US5104042A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Mar 29, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B17/0623
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ultrasonic nozzle includes an atomizing surface for producing an atomized liquid spray, a liquid-feed passageway for supplying process liquid to the atomizing surface, the passageway having a first-diameter section and a second fluidly connected smaller-diameter section, with a shoulder defined therebetween; an internal shut-off assembly for controlling the supply of process liquid to the atomizing surface, the shut-off assembly including a shut-off rod slidably positioned within the passageway and having a sealing end adapted to cooperate with the shoulder, an actuator piston connected with the opposite end of the shut-off rod and slidable within a cylinder bore which is in fluid communication with the passageway, and a valve actuator for slidably moving the piston and shut-off rod in the passageway between a first closed position and a second open position, by which operation the supply of liquid to the atomizing surface is controlled. A barrier fluid provided in the cylinder bore between the passageway and the piston at a pressure higher than that of the process fluid in the passageway prevents the process fluid from adversely affecting the shut-off assembly, and a substantia…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.