Porous, lubricated mixing tube for abrasive, fluid jet
US6837775B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 6, 2001 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Dec 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24C1/045
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An abrasive, fluid jet cutting apparatus, and its method of construction and operation, are disclosed that reduce the wear and erosion problems typically experienced in the cutting jet's mixing tube. This improved fluid jet cutting apparatus comprises (a) a chamber having an inlet for receiving a pressurized fluid jet, a port for receiving a flow of abrasive particles which are entrained into the fluid jet, and an exit through which the fluid jet and entrained abrasives exit the chamber, (b) a mixing tube having an entry port for receiving said fluid jet and entrained abrasives, an inner wall for directing the flow of said fluid jet and entrained abrasives, and an outlet port through which said fluid jet and entrained abrasives exit said tube, wherein the tube entry port is proximate the chamber exit, (c) a lubricating fluid reservoir that surrounds at least a portion of the outer wall of the mixing tube, (d) wherein at least a portion of the mixing tube wall is porous, and (e) wherein the lubricating fluid passes from the lubricating reservoir and through the porous wall to lubricate at least a portion of the surface of the mixing tube wall so as to resist erosion of the tube wall…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.