Abstract: An air-assisted spray nozzle assembly including a pre-atomizing section and a spray tip located downstream of said pre-atomizing section. The spray tip has an upstream chamber for receiving pre-atomized liquid from the pre-atomizing section, a downstream chamber separated from the upstream chamber by an end wall, and the end wall is formed with a plurality of discharge passages adjacent its outer perimeter for directing a plurality of discharging flow streams in part in an outward axial direction and in part in a direction toward each other for defining a well defined conical or flat spray pattern.

Abstract: The nozzle effects three stages of liquid atomization. The first stage is carried out by means of a single liquid orifice and an expansion chamber containing an impingement pin. A high velocity stream of liquid is discharged through the liquid orifice and is broken-up upon striking the flat end of the impingement pin. The second stage is produced by an air guide which reduces in area to form jets of air into a high velocity annular air curtain, the curtain passing through the liquid orifice in surrounding relation with the liquid stream and striking the broken-up flow of the first stage to atomize the particles. The mixture is then allowed to expand in the expansion chamber to reduce the tendency of the liquid particles in the atomized mixture from commingling together and reforming into larger particles. The third stage is effected by the expansion chamber and by multiple discharge orifices.

Abstract: A quick disconnect nozzle comprising a nozzle body, a spray tip, and an annular sealing member interposed therebetween. The tip is adapted to be inserted axially into the body and then rotated. When the tip is rotated, camming lugs on the tip and body coact to draw the tip axially toward the body and compress the sealing member. Detents in the form of flexible curved ribs are carried by the tip and resiliently pop into curved pockets in the body to releasably hold the tip in its installed position. The sealing member is an O-ring which is carried by the tip and which is removable from the body as a unit with the tip. An inner seal is provided between mutually converging tapered walls of the nozzle tip and nozzle body adjacent the inner end portion of the nozzle tip.

Abstract: A controllable spray nozzle assembly with an elongated discharge passageway is provided with a short discharge orifice and valve seat insert element that is made separately for ease and accuracy of providing its orifice and valve seat and is mounted in sliding sealing relation with the outlet end of the passageway. A valve needle extends into the passageway and is selectively movable along the passageway for shut-off and/or flow rate control of the spray flow by the related axial positioning of its seat end relative to the separate discharge orifice and valve seat element that is inserted at the outlet end of the passageway. The separate discharge element has an external configuration that conforms to a portion of the nozzle body adjacent the outlet end for such seating thereon. The element's internal configuration defines a small discharge orifice through the element and a valve seat around the inner end of that orifice in opposed relation to the seat on the valve needle.

Abstract: An all plastic spray nozzle attachment is provided to avoid corrosion problems, with a self-adjusting fastener system which minimizes or avoids bending stresses on the securement screw that joins the free ends of the two hinged clamp arms that embrace the support pipe. Both the head and nut ends of the screw and the respective abutting surfaces of the clamp arms are provided with arcuate abutment surfaces which permit rocking movement of the head and nut portions about axes generally parallel to the longitudinal axis of the support to readily maintain the head and nut in coaxial alignment with one another, thereby relieving bending stresses on the screw shank as the fastener is tightened to draw the arms toward one another into clamped position.

Abstract: In fluidized catalytic cracking, enhanced efficiency is produced through the use of a spray nozzle having two transversely elongated discharge orifices for effecting fine atomization of liquid hydrocarbon feed as the latter is sprayed from the nozzle. The orifices preferably are inclined so as to produce a converging spray but can be inclined to produce a diverging spray or a substantially flat spray.

Abstract: An air assisted atomizing spray nozzle including an atomizing member having: (a) a mixing chamber, (b) a liquid inlet opening for injecting a liquid stream axially into the mixing chamber, (c) a pair of air inlet openings for injecting a pair of air streams radially into the mixing chamber in directions substantially opposed to one another and substantially perpendicular to the liquid stream for atomizing the liquid stream, and (d) an exit orifice in axial communication with the mixing chamber for discharging atomized liquid therefrom. The atomized liquid is sprayed into atmosphere by a spray tip. The atomizing member and the spray tip are held in assembled relation with a housing by a quick connect/quick release cap.

Abstract: Liquid is finely atomized and is ejected through apertures in a disc by virtue of high frequency vibration of the disc at controlled amplitudes. To insure an adequate supply of liquid to the disc while avoiding overflow and droplet leakage through the apertures, an injector meters supply liquid to the disc and simultaneously extracts excess liquid from the disc with a siphon action.

Abstract: A pressurized stream of liquid flowing into a body is divided into a plurality of angularly spaced jets which are rebounded in an upstream direction prior to being guided in a generally radially outward direction by a deflector surface. During flow along the deflector surface, the liquid is formed into a thin and very turbulent sheet which impinges against the edge portion of a plate and is shattered into small droplets. An annular curtain of pressurized air cross shears the droplets and breaks the droplets into finely atomized particles which are discharged through a spray nozzle.

Abstract: An air assisted atomizing spray nozzle including: (a) a mixing chamber, (b) a liquid inlet opening for injecting a liquid stream axially into the mixing chamber, (c) a pair of air inlet openings for injecting a pair of air streams radially into the mixing chamber in directions substantially opposed to one another and substantially perpendicular to the liquid stream for atomizing the liquid stream, and (d) an exit orifice in axial communication with the mixing chamber for discharging atomized liquid therefrom.

Abstract: A spray nozzle assembly particularly adapted for directing a finely atomized slurry of hydrated lime for removing sulfur dioxide from flue gases. The nozzle assembly includes a nozzle body having a first pre-atomizing and mixing chamber into which pressurized liquid and air flow streams are directed for breaking down and pre-atomizing the liquid, an orifice plate at the downstream end of the first pre-atomization and mixing chamber for restricting the fluid flow into a second chamber defined by the orifice plate and spray tip, and a spray tip having a plurality of circumferentially spaced discharge orifices through which atomized liquid particles in the second chamber discharge. Each discharge orifice is inclined at a compound angle in order to cause the spray to discharge from the tip as a swirling annular curtain and thereby retard the build up of lime and fly ash on the tip.

Abstract: A reversible spray tip assembly having a housing formed with a longitudinal bore and a transverse bore, a cylindrical turret having a spray tip orifice rotatably and removably supported in the transverse housing bore, and a floating seal disposed in the longitudinal housing bore and having a concave sealing face adapted for sealing engagement with the turret. The spray tip assembly includes a seal adaptor disposed in the longitudinal housing bore upstream of the floating seal which, upon securement of the spray tip assembly onto a supply line by a threaded coupling, causes the seal to be forced into predetermined initial sealing contact with the turret regardless of how tightly the coupling is screwed onto the supply line.

Abstract: A spray nozzle and method of assembly onto the threaded end of a supply line or like by use of a conventional wrench. The spray nozzle has an elongated body formed with an axial flow passageway, a threaded upstream end, a wrench engaging downstream end, and a radial locating and support flange intermediate its upstream and downstream ends for supporting the nozzle on the wrench with the downstream end in operative relation to the gripping elements of the wrench and with the threaded upstream end extending outwardly of the wrench for positioning into threaded engagement with the threaded supply line by use of the wrench. The spray nozzle has an elongated discharge orifice and the support flange has flats formed parallel to the long axis of the discharge orifice to aid in orientating the nozzle.

Abstract: A spray nozzle assembly having a spray tip formed with an elongated, cylindrical chamber communicating with the liquid supply and being formed with a cross-slot which intersects the chamber at a location intermediate the ends thereof for defining a discharge orifice, a deflection surface on a downstream side of the discharge orifice for directing liquid in a direction transverse to the axis of the chamber, and a pocket extending downstream of the deflector surface. In one embodiment, the spray tip has a pre-orifice substantially smaller in diameter than the chamber adjacent an upstream end thereof, in another embodiment, the chamber is disposed with its axis at an angle to the vertical and the cross-slot extends upwardly in substantially vertical relation for defining a vertical deflection surface, and in still another embodiment the spray tip has a wear resistant metal insert.

Abstract: A solenoid operated liquid spray gun for use in directing small volume, air atomized liquid at short operating intervals. The spray gun includes a housing having pressurized liquid and air inlets, a solenoid coil contained within the housing, and a fluid control module disposed within the solenoid coil for controlling the flow of liquid from the liquid inlet through a discharge nozzle. The solenoid coil and module further define an annular air passage within the housing for communicating pressurized air from the air inlet to the nozzle for facilitating atomization and direction of the liquid discharging from the gun.

Abstract: A spray nozzle assembly having a spray tip formed with an elongated, cylindrical chamber communicating with the liquid supply and being formed with a cross-slot which intersects the chamber at a location intermediate the ends thereof for defining a discharge orifice, a deflection surface on a downstream side of the discharge orifice for directing liquid in a direction transverse to the axis of the chamber, and a pocket extending downstream of the deflector surface. In one embodiment, the spray tip has a preorifice substantially smaller in diameter than the chamber adjacent an upstream end thereof, in another embodiment, the chamber is disposed with its axis at an angle to the vertical and the cross-slot extends upwardly in substantially vertical relation for defining a vertical deflection surface, and in still another embodiment the spray tip has a wear resistant metal insert.

Abstract: A self-cleaning spray nozzle in which a standard fitting serves as the nozzle body. A unitary valve assembly is inserted partially into the fitting and secured to it. The valve assembly includes a secured valve seat biased by a spring into a spraying head so that the valve seat and spraying head form a seal. The spraying head is designed so that it does not form a complete seal with the valve seat, the gap in the seal defining a metering orifice so that under normal fluid pressures, fluid will spray out of the orifice in a predetermined pattern. When a force sufficient to overcome the spring bias is applied to the spraying head, the spraying head separates from the valve seat breaking the seal and allowing the fluid to flush the outlet. The force can either be applied manually, or caused by an increase in fluid pressure. An optional deflection collar may be snapped onto the nozzle for influencing the direction of the spray.