Orifice body with mixing chamber for abrasive water jet cutting

Details Orifice body with mixing chamber for abrasive water jet cutting Orifice body with mixing chamber for abrasive water jet cutting

2005-08-23

2005-08-23

Ganey, Steven J. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Rigid fluid confining distributor

C239S288000, C239S433000, C239S591000, C239S596000, C239S600000, C175S340000, C451S099000, C451S102000

Reexamination Certificate

active

06932285

ABSTRACT:
An improved orifice assembly for use with an ultra high pressure fluid jet cutting apparatus is disclosed. The improved orifice assembly generally includes an orifice body defining a central bore, a high pressure inlet cavity located at an upstream portion of the body, a mixing cavity located at a downstream portion of the body, and an abrasive material inlet bore that is in direct communication with the mixing cavity. The inlet or high pressure cavity preferably has a cylindrical cross section at the side wall portion and a generally flat bottom wall, with a constant radius transition portion between the side and bottom walls. A jeweled orifice is preferably located at the bottom wall and forms a portion thereof. A chamfer at the downstream portion of the mixing chamber permits appropriate coaxial alignment of a mixing tube with the jeweled orifice so as to preserve proper fluid flow characteristics. In addition, the incorporation of a soft seal between the mating surfaces of the inlet body and the orifice assembly permit easy user removal of these components from a cutting jet system.

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