Jet pump nozzle assembly

Claim 1

An improved jet pump, comprising: a pump body having a longitudinal passage means therein to receive fluid to be pumped; a venturi assembly mounted within said pump body including a venturi body placed in a pump fluid flow path to receive in the inlet thereof fluid to be pumped and power fluid, said venturi assembly being operably connected in fluid communication with an outlet from said pump body; and a nozzle assembly within the pump body including a nozzle shell mounting means in said pump body, a hollow nozzle shell having one end portion mounted in said shell mounting means and having an outlet opening positioned near the inlet of said venturi body, and a tubular nozzle tip mounted within said nozzle shell outlet opening and extending therefrom, said nozzle tip being secured to said nozzle shell by a bonding material interposed between said nozzle tip and said nozzle shell, said nozzle mounting means including an opening in said pump body to receive and mount one end of said nozzle shell and an abutting surface around an end of said mounting means to support a surface of said nozzle shell; and said nozzle nozzle-and shell having a tubular end portion mounted in said nozzle shell mounting means opening and an outwardly extending flange having said surface on one side thereof in contact with said mounting means abutting surface; (a) said nozzle tip being constructed of a corrosion and abrasion resistant solderable material that has a brittle nature; (b) said nozzle shell being constructed of a solderable metal material that has a resilient nature; and (c) said bonding material having a resilient nature and joining both said nozzle shell and said nozzle tip in order to form a fluid tight seal therebetween and to compensate for deformation of said nozzle shell when it is mounted in a nozzle housing thereby preventing possible damage to said nozzle tip by isolating said nozzle tip from deformation of said nozzle shell that may occur upon mounting of said nozzle shell within a pump housing.