EP0271316B1 - Umbaubare Sprühdüse - Google Patents

Umbaubare Sprühdüse Download PDF

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Publication number
EP0271316B1
EP0271316B1 EP87310777A EP87310777A EP0271316B1 EP 0271316 B1 EP0271316 B1 EP 0271316B1 EP 87310777 A EP87310777 A EP 87310777A EP 87310777 A EP87310777 A EP 87310777A EP 0271316 B1 EP0271316 B1 EP 0271316B1
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EP
European Patent Office
Prior art keywords
liquid
chamber
stream
air
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87310777A
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English (en)
French (fr)
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EP0271316A3 (en
EP0271316A2 (de
Inventor
James Haruch
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Spraying Systems Co
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Spraying Systems Co
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Publication date
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Publication of EP0271316A2 publication Critical patent/EP0271316A2/de
Publication of EP0271316A3 publication Critical patent/EP0271316A3/en
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Publication of EP0271316B1 publication Critical patent/EP0271316B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/12—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means capable of producing different kinds of discharge, e.g. either jet or spray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1254—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/267—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being deflected in determined directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0483—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with gas and liquid jets intersecting in the mixing chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed

Definitions

  • the present invention relates generally to spray nozzles and, more particularly, to spray nozzles which are adapted for the application of liquids such as agricultural chemicals.
  • Such a spray nozzle comprises an elongated hollow nozzle body having first and second ends, a chamber defined in said body, means in said body defining an air inlet port through which a pressurized stream of air may be injected into said chamber, means in said body defining a liquid inlet port for introducing liquid into said body, means in said body for causing said liquid to flow through said chamber in a stream which mixes with the pressurized stream of air injected into said chamber through said air inlet port whereby said liquid is preliminarily atomized in said chamber, and an orifice member inserted removably into said body remote from said liquid inlet port.
  • a pressurized air stream is injected into the body of the nozzle to preatomize the liquid before it is discharged from the spray tip of the nozzle.
  • non-air assisted nozzles i.e., conventional hydraulic nozzles
  • the spray pattern is formed as the pressurized liquid is discharged from the nozzle tip.
  • a liquid spray nozzle comprises a hollow nozzle body which defines a chamber, means in said body defining an air inlet port through which a pressurized stream of air may be directed into said chamber, selectively actuatable means for directing pressurized air through said air inlet port, means in said body defining a liquid inlet port for introducing a liquid flow stream into said body , means for directing pressurized liquid through said liquid inlet port, and an insert member removably mountable into said body, characterized in that said insert member is formed with an internal liquid flow passageway through which liquid introduced into said body passes and an impingement surface in line with the direction of passage of said liquid through said liquid passageway and against which said liquid strikes for deflecting said liquid and mixing it with a pressurized stream of air introduced into said body chamber from said air inlet port upon actuation of said pressurized air directing means whereby the liquid is preliminarily atomized in said chamber, and a spray tip which defines a discharge orifice
  • the present invention provides a new and improved spray nozzle which may be used either as an air assisted nozzle or as a hydraulic nozzle by making a relatively simple and easy conversion to the nozzle.
  • a kit may be provided comprising a relatively simple and inexpensive nozzle body and comprising internal components adapted to be inserted interchangeably into the body to enable the same body to be used either as part of an air assisted nozzle according to the first aspect of the invention or as part of a hydraulic nozzle according to the second aspect of the invention.
  • the construction of the insert when used in the nozzle body, effects turbulent mixing of pressurized air and liquid so as to produce good preatomization of the liquid before the liquid is discharge from the nozzle.
  • FIGURE 1 is a fragmentary and elevational view, partially in cross-section, of a new and improved spray nozzle incorporating the unique features of the present invention, the view being taken substantially along the line 1-1 of FIG. 2.
  • FIG. 2 is a fragmentary cross-section taken substantially along the line 2-2 of FIG. 1.
  • FIG. 3. is a fragmentary cross-section taken substantially along the line 3-3 of FIG. 2 and shows certain parts of the nozzle in moved positions.
  • FIG. 4. is a fragmentary cross-section taken substantially along the line 4-4 of FIG. 2.
  • FIG. 5. is an exploded perspective view of certain parts of the nozzle.
  • FIG. 6. is an exploded perspective view showing a modified version of one of the nozzle parts.
  • FIG. 7. is a view similar to FIG. 2. but shows the nozzle as having been converted from an air assisted nozzle to a hydraulic nozzle.
  • the invention is shown in the drawings as embodied in a spray nozzle 10 which is adapted for use in spraying liquid and particularly for spraying liquid fertilizer or insecticide on an agricultural field.
  • a spray nozzle 10 which is adapted for use in spraying liquid and particularly for spraying liquid fertilizer or insecticide on an agricultural field.
  • several nozzles are secured to and are spaced along an elongated hollow boom (not shown) which also serves as a manifold for delivering liquid under high pressure to the nozzles.
  • the nozzle 10 includes an elongated hollow body 11 molded of plastic and having opposite end hubs 12 and 13 which are externally threaded.
  • An internally threaded hub 14 is formed integrally with and projects from one side of the body and receives a threaded pipe 15 which communicates with the boom to receive pressurized liquid therefrom.
  • the lower end of the hub 14 defines a circular inlet port 16 (FIG. 2) through which liquid is introduced into the nozzle body 11.
  • a discharge nozzle tip 20 is located adjacent the end of the hub 12 of the body 11.
  • the latter is formed with a radially extending peripheral flange 21 which is clamped to the end of the hub 12 by a clamping nut or cap 22 adapted to be threaded onto the hub.
  • An annular gasket 23 is interposed between the tip 21, the cap 22 and the end of the hub 12 in order to seal the perimeter of the tip.
  • An axially extending discharge orifice 25 is formed through the nozzle tip 20.
  • a deflector flange 26 (FIG. 2) which is disposed transversely to the line of travel of the liquid flowing through the discharge orifice 25.
  • the deflector flange directs the particles into a well-defined flat fan spray pattern transverse to the axis of the nozzle body 11.
  • Liquid which is admitted into the nozzle body 11 via the inlet port 16 is shaped into a longitudinally flowing stream by a cylindrical tube 30 (FIG. 2.).
  • the tube is coaxial with and is spaced inwardly from the wall of the body and its downstream end is threadably connected to the body at 31.
  • the tube coacts with a resiliently flexible diaphragm 32 to form an antidrip valve which prevents liquid from dripping from the nozzle tip 20 after the supply of pressurized liquid to the inlet pipe 15 has been cut off.
  • the diaphragm is located adjacent the upstream end of the tube 30 and its peripheral margin is clamped between the end of the hub 13 and a cap 33 which is threaded onto the hub.
  • a valve follower 34 is supported slidably within the cap and is operably connected to the diaphragm.
  • Telescoped into the cap is a coiled compression spring 35 which urges the diaphragm toward a closed position against the upstream end of the tube 30 as shown in FIG. 2.
  • the pressurized liquid urges the diaphragm 32 away from the upstream end of the tube as shown in FIG. 3. so as to enable the liquid to flow through the tube and to be sprayed from the nozzle tip 20.
  • the spring 35 forces the diaphragm 32 into sealing engagement with the upstream end of the tube 30 so as to substantially prevent liquid from dripping out of the nozzle tip.
  • the nozzle 10 is basically suitable for use as a hydraulic or non-air assisted nozzle in the same general manner as the nozzle disclosed in the aforementioned Butterfield et al application.
  • a pure hydraulic nozzle i.e., a non-air assisted nozzle
  • Hydraulic nozzles are generally preferred for use under conditions where it is desired to spray a field with relatively large quantities of a liquid chemical solution having a high percentage of water.
  • an air assisted nozzle is a nozzle in which the liquid flows through the nozzle at a comparatively slow flow rate and in which a pressurized stream of air is injected into the nozzle in order to preliminarily break up or atomize the liquid prior to the liquid being sprayed from the nozzle tip.
  • Air assisted nozzles are generally used in situations where a comparatively small quantity of a more highly concentrated chemical solution is to be sprayed on a field of given area.
  • the nozzle 10 is provided with a unique insert member 40 (FIGS. 2 and 5) which may be placed in the nozzle to enable the nozzle to operate in an air assisted mode and which may be removed easily from the nozzle to convert the nozzle for use in a hydraulic mode.
  • the insert 40 permits the nozzle 10 to be easily changed over from air assisted to hydraulic, or vice versa, without need of maintaining a supply of each type of nozzle and without need of removing one type of nozzle from the boom and installing the other type of nozzle on the boom each time a conversion is made.
  • the insert 40 includes a tubular orifice member 41 (FIGS. 2 and 5) made of brass or the like.
  • the orifice member is cylindrical and is telescoped into the downstream end of the tube 30 with a tight but sliding fit.
  • An O-ring 42 (FIG. 2) fits within a groove 43 (FIG. 5) around the outer periphery of the orifice member 41 and is compressed against the inner wall of the tube 30 to establish a seal between the orifice member and the tube.
  • a flow restricting orifice 45 Formed through the downstream end portion of the orifice member 41 is a flow restricting orifice 45 which serves to reduce the flow rate of liquid flowing from the tube 30 toward the nozzle tip 20.
  • the orifice includes a frustoconical upstream portion whose small diameter end joins a cylindrical downstream portion.
  • a tubular screen-like strainer 46 extends from the upstream end of the orifice member 41 and is spaced radially inwardly from the wall of the tube 30 so that liquid entering the tube must pass radially through the strainer before flowing to the orifice 45.
  • One end of the strainer 46 abuts the upstream end of the orifice member 41 while the other end of the strainer abuts and is closed off by the head 47 (FIG. 5) of a pin 48.
  • the latter is telescoped slidably into both the strainer and the upstream end of the orifice member.
  • the pin is of cruciform cross-section and is formed with four angularly spaced fins 49 (FIG. 5) which define flow passages permitting liquid to flow through the strainer and into the orifice member.
  • the pin 48 may be pulled out of the orifice member 41 and then the strainer 46 may be pulled off of the pin to permit cleaning or replacement of the strainer.
  • a modified pin 48 for supporting the strainer 46 is shown in FIG. 6.
  • the pin is hollow and generally cylindrical and is formed with four angularly spaced and longitudinally extending slots 49' which permit liquid to flow into the pin and then to the orifice member 41.
  • Two axially spaced rings 50 extend circumferentially around the pin 48 and hold the strainer in radially outwardly spaced relation with the body of the pin.
  • the insert 40 includes an elongated impingement element 55 (FIG. 5) for breaking up the stream of liquid flowing through the orifice 45 and for causing the liquid to mix with a pressurized air stream which also is broken up by the impingement element.
  • the impingement element 55 is in the form of an elongated and flat bar formed integrally with the downstream end of the orifice member 41, the bar being of rectangular cross-section.
  • the bar 55 extends longitudinally into an axially elongated mixing chamber 56 of circular cross-section defined within the nozzle body 11. As shown in FIGS. 2 and 3, the rectangular bar 55 is spaced inwardly from the circular wall of the chamber around the entire periphery of the bar.
  • a transversely extending circular hole 60 is formed through the bar 55 immediately downstream of the orifice 45.
  • the hole 60 communicates with the orifice 45 and, as pressurized liquid is discharged from the orifice, it strikes the downstream wall of the hole.
  • the downstream wall thus defines an impingement surface which deflects the liquid transversely to break up the liquid and cause the liquid to flow through the chamber 56 along the sides of the bar 55.
  • a pressurized stream of air which is admitted into the chamber 56 through a circular air inlet port 62 (FIG. 3) formed in the nozzle body 11 and extending transversely to the chamber and the stream of liquid flowing through the chamber.
  • the inlet port 62 is located at the inner end of a fitting 63 (FIGS. 1 and 3) joined to the nozzle body 11 and connected to a flexible tube 64 which communicates with a supply of pressurized air by way of a shut off valve 65.
  • a stream of pressurized air is injected transversely into the chamber 56.
  • the axis of the air inlet port 62 extends parallel to the axis of the hole 60 in the bar 55 but the port 62 is smaller in diameter than the hole 60 and its axis is offset in a downstream direction from the axis of the hole.
  • the surface 66 defines an impingement surface which deflects and breaks up the air stream.
  • the insert 40 is completed by two radially spaced webs 70 (FIG. 5) formed integrally with and extending axially from the bar 55 and having downstream ends joined to a cylindrical sleeve 71.
  • a cylindrical sleeve 71 Formed on the downstream end of the sleeve is an outwardly radially extending flange 72 which is adapted to be clamped by the cap 22 between the sealing gasket 23 and an internal shoulder at the downstream end portion of the nozzle body 11.
  • An axially extending key 73 (FIG.
  • the insert 40 When the insert 40 is in place in the nozzle body 11, the flow rate of the liquid stream is reduced by the orifice 45 and, in addition, the stream is preliminarily atomized by the coaction of the wall of the hole 60, the impingement surface 66 of the bar 55 and the mutually transverse flow relation between the liquid stream and the air stream.
  • the insert 40 may be removed from the body 11 simply by unscrewing the cap 22 and taking the cap, the nozzle tip 20 and the sealing gasket 23 off of the body as a unit. Thereafter, the insert with the attached pin 48 and strainer 46 may be pulled axially out of the downstream end of the body 11.
  • the nozzle 10 When the insert 40 is out of the body 11, the nozzle 10 may be converted for use in a hydraulic mode simply by placing a tubular strainer 80 in the chamber 56 as shown in FIG. 7.
  • the strainer 80 is telescoped over a pin 81 which may be similar to the pins 48 or 48' and which is formed with a radially extending flange 83 at its downstream end.
  • the flange 83 is adapted to be clamped against the internal shoulder in the body 11 by the gasket 23 when the cap 22 and the nozzle tip 20 are screwed back on to the body.
  • the latter may be of the quick disconnect bayonet type such as disclosed in Butterfield et al United States Patent 4,527,745.
  • the strainer 80 also may be similar to the strainer disclosed in such patent.
  • the air fitting 63 is closed off to prevent liquid from escaping through the fitting. This may be accomplished either by shutting off the valve 65, by pinching the tube 64 closed with a clamp or by disconnecting the tube from the fitting 63 and inserting a plug into the fitting.
  • the present invention brings to the art a new and improved nozzle 10 which may be quickly and easily converted between an air assisted, relatively low flow rate mode and a non-air assisted, comparatively high flow rate mode.
  • the nozzle When set up in the air assisted mode, the nozzle effects very good preliminary atomization of the liquid as a result of the interaction of the insert 40 with the air and liquid streams.

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Claims (11)

  1. Sprühdüse, die aus einer luftunterstützten Düse in eine nichtluftunterstützte Düse umbaubar ist, mit einem länglichen hohlen Düsenkörper (11), der ein erstes und ein zweites Ende (12, 13) aufweist, mit einer in dem Düsenkörper (11) ausgebildeten Kammer (56), mit an dem Düsenkörper befindlichen Mitteln (63), die einen Lufteinlaßanschluß (62) bilden, durch den in die Kammer (56) ein Druckluftstrom injizierbar ist, mit an dem Düsenkörper befindlichen Mitteln (14), die einen Flüssigkeitseinlaßanschluß (16) bilden, um Flüssigkeit in den Düsenkörper (11) einzuspeisen, mit in dem Düsenkörper befindlichen Mitteln, um die Flüssigkeit durch die Kammer (56) in einem Strom strömen zu lassen, der sich mit dem durch den Lufteinlaßanschluß (62) in die Kammer injizierten Druckluftstrom mischt, damit die Flüssigkeit in der Kammer (56) vorab atomisiert wird, mit einem eine Öffnung aufweisenden Element (40), das an einer von dem Flüssigkeitsanschluß (16) entfernt liegenden Stelle in den Düsenkörper (11) entfernbar eingesetzt ist, dadurch gekennzeichnet, daß das eine Öffnung aufweisende Element (40) eine Öffnung (45) bildet, um die Strömungsrate des Flüssigkeitsstromes zu beschränken, nachdem der Strom in den Flüssigkeitseinlaßanschluß (16) eingetreten ist, und ehe der Strom in der Kammer (56) durch den Luftstrom vorab atomisiert wurde, daß Mittel eine Auslaßöffnung (25) bilden, die neben dem ersten Ende (12) des Düsenkörpers (11) angeordnet ist und mit der Kammer (56) strömungsmäßig in Verbindung steht, daß die Auslaßöffnung (25) die vorab atomisierte Flüssigkeit aus der Kammer (56) erhält und bewirkt, daß diese Flüssigkeit aus der Düse versprüht wird, und daß an dem Düsenkörper (11) Mittel (22) vorgesehen sind, die wahlweise von diesem trennbar sind, damit das die Öffnung aufweisende Element (40) aus dem Düsenkörper (11) herausgenommen werden kann, um den Flüssigkeitsstrom durch die Kammer (56) strömen zu lassen, ohne daß die Strömungsrate des Flüssigkeitsstroms beeinträchtigt ist, ehe der Strom die Auslaßöffnung (25) erreicht.
  2. Sprühdüse nach Anspruch 1, dadurch gekennzeichnet, daß die Kammer länglich ist und in diese quer zu der Kammer (56) der Luftstrom injiziert wird, daß der Flüssigkeitsstrom in Längsrichtung in die Kammer fließt, daß in der Kammer (55) Mittel vorgesehen sind, um den Luft- und den Flüssigkeitsstrom abzulenken, um deren Mischung und die Vorabatomisierung der Flüssigkeit zu begünstigen, und daß die ablenkenden Mittel (55) mit dem eine Öffnung aufweisenden Element (40) verbunden sind und als Einheit mit dem eine Öffnung aufweisenden Element (40) aus dem Düsenkörper (11) entfernbar sind.
  3. Sprühdüse nach Anspruch 2, dadurch gekennzeichnet, daß die Ablenkungsmittel eine Stange (55) aufweisen, die sich in Längsrichtung der Kammer (56) erstreckt und in Querrichtung nach innen gegenüber deren Wänden der Kammer im Abstand ist, daß die Stange (55) mit dem eine Öffnung aufweisenden Element (40) einstückig ist, daß in der Stange (55) ein durchgehendes Loch (60) ausgebildet ist, das sich quer zu der Stange (55) erstreckt und unmittelbar stromabwärts von der Öffnung (45) des eine Öffnung aufweisenden Elementes (40) angeordnet und mit dieser Öffnung strömungsmäßig in Verbindung ist, damit die durch diese Öffnung (45) austretende Flüssigkeit auf die stromabliegende Wand des Loches (60) auftrifft und quer abgelenkt wird, um längs der Seiten der Stange (55) zu fließen.
  4. Sprühdüse nach Anspruch 3, dadurch gekennzeichnet, daß die Achse des Lochs (60) sich parallel zu der Achse des Lufteinlaßanschlusses (62) und gegenüber dieser stromaufwärts im Abstand befindet, und daß der Lufteinlaßanschluß (62) nur teilweise mit dem Loch (60) ausgerichtet ist, wodurch ein Teil des durch den Lufteinlaßanschluß (62) injizierten Luftstromes auf die Stange (55) auftrifft, während ein anderer Teil des Luftstromes durch das Loch (60) hindurchgelangt.
  5. Sprühdüse nach Anspruch 2, dadurch gekennzeichnet, daß das eine Öffnung aufweisende Element (40) rohrförmig ist, daß in den stromaufwärts liegenden Endabschnitt des eine Öffnung aufweisenden Elementes (40) ein Zapfen (48) teleskopartig eingesteckt ist, daß ein rohrförmiges Sieb (46) teleskopartig über den Zapfen (48) gesteckt ist und daß der Zapfen (48) Mittel (49) aufweist, die es einer Flüssigkeit ermöglichen, durch das Sieb (46) in das eine Öffnung aufweisende Element (40) zu strömen.
  6. Sprühdüse nach Anspruch 2, dadurch gekennzeichnet, daß sie außerdem an dem stromabwärtsliegenden Ende der Ablenkungsmittel (55) eine Hülse (71) aufweist, die in strömungsmäßiger Verbindung mit der Kammer (56) steht, daß an dem stromabwärtsgelegenen Ende der Hülse (71) ein radial wegstehender Bund (72) vorgesehen ist, und daß die wahlweise abnehmbaren Mittel eine an dem ersten Ende (12) des Düsenkörpers (11) befindliche Kappe (22) umfassen, die dazu dient, den Bund (72) gegen das erste Ende (12) des Düsenkörpers (11) zu pressen.
  7. Sprühdüse nach Anspruch 6, dadurch gekennzeichnet, daß die Auslaufsöffnung (25) von der Kappe (22) gehaltert ist.
  8. Sprühdüse für Flüssigkeiten, mit einem hohlen Düsenkörper (11), der eine Kammer (56) bildet, mit in dem Düsenkörper (11) befindlichen Mitteln (73), die einen Lufteinlaßanschluß (62) bilden, durch den ein Druckluftstrom in die Kammer (56) eingespeist werden kann, mit wahlweise zu betätigenden Mitteln, um Druckluft durch den Lufteinlaßanschluß (62) einzuspeisen, mit in dem Düsenkörper befindlichen Mitteln (14), die einen Flüssigkeitseinlaßanschluß (16) bilden, um einen Flüssigkeitsstrom in den Düsenkörper (11) einzuleiten, mit Mitteln zum Einspeisen von unter Druck stehender Flüssigkeit in den Flüssigkeitseinlaßanschluß (62) und mit einem Einsatzelement (40), das lösbar in dem Düsenkörper (11) gehalten ist, dadurch gekennzeichnet, daß das Einsatzelement (40) mit einem inneren Flüssigkeitsdurchlaßkanal, durch den die in den Düsenkörper (11) eingespeiste Flüssigkeit hindurch gelangt, und mit einer Prallfläche (55) versehen ist, die sich mit der Durchgangsrichtung der Flüssigkeit durch den Flüssigkeitsdurchlaßkanal in einer Linie befindet und gegen die die Flüssigkeit auftrifft, damit die Flüssigkeit abgelenkt und mit einem Druckluftstrom gemischt wird, der nach Betätigung der Einspeismittel in die Kammer (56) des Düsenkörpers über den Lufteinlaßanschluß (62) eingespeist wird, wodurch die Flüssigkeit in der Kammer vorab atomisiert wird, und daß eine Sprühspitze (20) vorgesehen ist, die eine Auslaßöffnung (25) bildet, die mit der Kammer (56) zur Aufnahme der vorab atomisierten Flüssigkeit aus der Kammer (56) strömungsmäßig in Verbindung steht, um die Flüssigkeit aus der Düse in einem vorbestimmten Muster von Flüssigkeitströpfchen zu versprühen.
  9. Flüssigkeitssprühdüse nach Anspruch 8, dadurch gekennzeichnet, daß das Einsatzelement mit dem Flüssigkeitsdurchlaßkanal eine Öffnung (45) bildet, um die Rate der Flüssigkeitsströmung vor dem Auftreffen auf die Prallfläche (55) zu beschränken.
  10. Flüssigkeitssprühdüse nach Anspruch 8, dadurch gekennzeichnet, daß der Lufteinlaßanschluß (62) einen Druckluftstrom in die Kammer in einer Richtung einspeist, die quer zu der Richtung der Flüssigkeit liegt, die durch das Einsatzelement mit dem Flüssigkeitsdurchlaß strömt, daß der Lufteinlaßanschluß (62) die Druckluft in die Kammer so einleitet, daß zumindest ein Teil davon über die Prallfläche (55) hinweggelangt, und daß die Prallfläche (55) des Einsatzelementes derart ausgerichtet ist, daß sie im wesentlichen rechtwinklig zu der Richtung des Flüssigkeitsstromes liegt, der durch den Flüssigkeitsdurchlaß des Einsatzelementes gelangt.
  11. Flüssigkeitssprühdüse nach Anspruch 1, dadurch gekennzeichnet, daß sie an dem Düsenkörper befindliche und wahlweise von diesem zu entfernende Mittel umfaßt, um ein Entfernen des Einsatzelementes (40) von dem Düsenkörper zu ermöglichen, damit nach der Deaktivierung der Einspeismittel für die Druckluft ein in den Düsenkörper über den Flüssigkeitseinlaßanschluß (16) eingespeister Flüssigkeitsstrom durch die Kammer (11) strömt, ohne mit der Prallfläche (55) in Berührung zu kommen und ohne vorher nennenswert atomisiert zu werden, und daß der Flüssigkeitsstrom unmittelbar von der Düsenspitze (20) in einem vorbestimmten Sprühmuster aus Flüssigkeitsdröpfchen ausgegeben wird.
EP87310777A 1986-12-11 1987-12-08 Umbaubare Sprühdüse Expired - Lifetime EP0271316B1 (de)

Applications Claiming Priority (2)

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US94029086A 1986-12-11 1986-12-11
US940290 1986-12-11

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EP0271316A2 EP0271316A2 (de) 1988-06-15
EP0271316A3 EP0271316A3 (en) 1990-01-10
EP0271316B1 true EP0271316B1 (de) 1992-09-02

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EP (1) EP0271316B1 (de)
JP (1) JP2802496B2 (de)
KR (1) KR950000003B1 (de)
AU (1) AU610098B2 (de)
BR (1) BR8706761A (de)
CA (1) CA1291781C (de)
DE (1) DE3781529T2 (de)
DK (1) DK169611B1 (de)
MX (1) MX164218B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157591B (en) * 1984-04-19 1987-11-25 Spraying Systems Co Air-assisted spray nozzle
DE4102632A1 (de) * 1991-01-30 1992-08-06 Pfeiffer Erich Gmbh & Co Kg Austragduese fuer medien
US6195814B1 (en) 1996-02-26 2001-03-06 Matsushita Electric Industrial Co., Ltd. Shower bath apparatus and spray nozzle
DE19901704A1 (de) * 1999-01-18 2000-08-03 Hansgrohe Ag Sanitärgegenstand, insbesondere Handbrause, mit einer Umschalteinrichtung zur Beeinflussung einer Flüssigkeitsströmung
US7584908B2 (en) 2005-10-27 2009-09-08 Sta-Rite Industries, Llc Spray nozzle apparatus and method
CN100355502C (zh) * 2006-01-26 2007-12-19 朱根荣 喷雾装置
JP6102170B2 (ja) * 2011-12-22 2017-03-29 Ｊｆｅスチール株式会社 スプレーノズル用ノズルフィルタ及びスプレーノズル
GB201212199D0 (en) 2012-07-09 2012-08-22 Rigdeluge Global Ltd Nozzle apparatus
WO2015073133A1 (en) * 2013-11-12 2015-05-21 Spraying Systems Co. Catalytic cracking spray nozzle with internal liquid particle dispersion ring
CN104525397B (zh) * 2014-12-25 2023-05-30 重庆新派工业设计有限公司 可清洗型喷嘴
CN107088484B (zh) * 2017-06-28 2023-07-18 迈德乐喷雾系统广州有限公司 一种小型空气雾化喷嘴

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4343434A (en) * 1980-04-28 1982-08-10 Spraying Systems Company Air efficient atomizing spray nozzle
GB2157591B (en) * 1984-04-19 1987-11-25 Spraying Systems Co Air-assisted spray nozzle

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JPS63185469A (ja) 1988-08-01
DK648987D0 (da) 1987-12-10
AU610098B2 (en) 1991-05-16
CA1291781C (en) 1991-11-05
DK169611B1 (da) 1994-12-27
DE3781529T2 (de) 1993-02-04
JP2802496B2 (ja) 1998-09-24
BR8706761A (pt) 1988-07-19
MX164218B (es) 1992-07-27
AU8207187A (en) 1988-06-16
DK648987A (da) 1988-06-12
DE3781529D1 (de) 1992-10-08
KR880007134A (ko) 1988-08-26
EP0271316A3 (en) 1990-01-10
EP0271316A2 (de) 1988-06-15
KR950000003B1 (ko) 1995-01-07

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