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Porous, lubricated nozzle for abrasive fluid suspension jet

  • US 20030148709A1
  • Filed: 02/05/2002
  • Published: 08/07/2003
  • Est. Priority Date: 02/05/2002
  • Status: Active Grant
First Claim
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1. A nozzle apparatus for use with an abrasive fluid jet cutting system, said nozzle apparatus comprising:

  • a nozzle having an entry port for receiving a slurry consisting of a carrier fluid and abrasive particles, an inner wall for directing the flow of said slurry, and an outlet port through which said slurry exits said nozzle, wherein at least a portion of said nozzle wall being porous, a lubricating fluid chamber that surrounds said porous portion of the outer wall of said nozzle, said chamber having a port where a lubricating fluid enters said chamber, said chamber port connecting to an input pipe which connects to a filter for filtering contaminants from said lubricating fluid that might clog the pores of said porous portion of said nozzle, and wherein said lubricating fluid passes from said lubricating fluid chamber and through said porous wall to lubricate at least a portion of the surface of said nozzle inner wall.

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