Patent ID: 6814316
Filing Date: 2004-11-09
Classification: B05B,B26F

Abstract:
A high velocity nozzle for connection to a fluid supply tube of a high pressure fluid cutting system, comprising:a housing adapted for connection to the fluid supply tube, a bushing receiving bore extending from the fluid supply tube partially through said housing, and a spray outlet bore extending inwardly from a front surface of said housing which communicates with said bushing receiving bore through which the liquid is directed as a high velocity liquid jet; a bushing having an upstream end surface and a downstream end surface opposed to the upstream end surface, the bushing closely fitting within said bushing receiving bore and the downstream end surface being adapted to closely sealingly engage a mating surface of said housing within said bushing receiving bore, said bushing having a flow-directing bore for receiving the liquid from the fluid supply tube and extending at least partially through said bushing, said flow directing bore including a convergent inlet portion having an annular inner surface for reducing turbulence in said flow-directing bore, and an outlet portion formed with a convergent end surface and an annular inner surface between the convergent end surface and the convergent inlet portion; and an orifice plate disposed adjacent the downstream end surface of the bushing and intermediate the bushing and the housing, the orifice plate defining an orifice in coaxial fluid communication with the flow-directing bore and the outlet bore; the orifice having a diameter smaller than a minimum diameter of said flow-directing bore for producing a high velocity fluid jet.