EP0271316A2 - Umbaubare Sprühdüse - Google Patents

Umbaubare Sprühdüse Download PDF

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Publication number
EP0271316A2
EP0271316A2 EP87310777A EP87310777A EP0271316A2 EP 0271316 A2 EP0271316 A2 EP 0271316A2 EP 87310777 A EP87310777 A EP 87310777A EP 87310777 A EP87310777 A EP 87310777A EP 0271316 A2 EP0271316 A2 EP 0271316A2
Authority
EP
European Patent Office
Prior art keywords
liquid
chamber
stream
orifice
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.)
Granted
Application number
EP87310777A
Other languages
English (en)
French (fr)
Other versions
EP0271316B1 (de
EP0271316A3 (en
Inventor
James Haruch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spraying Systems Co
Original Assignee
Spraying Systems Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Spraying Systems Co filed Critical Spraying Systems Co
Publication of EP0271316A2 publication Critical patent/EP0271316A2/de
Publication of EP0271316A3 publication Critical patent/EP0271316A3/en
Application granted granted Critical
Publication of EP0271316B1 publication Critical patent/EP0271316B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.
  • Agricultural chemicals commonly are applied through a multiplicity of spray nozzles which are supported on and spaced along a common support boom. Particularly in recent years, it has been found that such chemicals can be efficiently applied through air assisted nozzles such as that shown in applicant's co-­pending United States application Serial No. 815,117 entitled Air Assisted Nozzle With Deflector Discharge Means. In such a nozzle, 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.
  • air assisted nozzles Because of the relatively large number of individual spray nozzles which are mounted on a typical agricultural spray boom, it can be time consuming to replace air assisted nozzles with hydraulic nozzles or vice versa.
  • one wishing the option of both air assisted application and conventional hydraulic application usually must purchase a supply of both types of nozzles.
  • the general aim of the present invention is to provide 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 more detailed object of the invention is to achieve the foregoing by providing a unique nozzle having internal components which make the nozzle usable as an air assisted nozzle but which may be easily removed from the nozzle body to enable the nozzle to be used as a hydraulic nozzle.
  • Still another object is to provide a kit 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 or as part of a hydraulic nozzle.
  • the invention also resides in the novel construction of an insert which, 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 discharged from the 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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  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
EP87310777A 1986-12-11 1987-12-08 Umbaubare Sprühdüse Expired - Lifetime EP0271316B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94029086A 1986-12-11 1986-12-11
US940290 1986-12-11

Publications (3)

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

Family

ID=25474575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87310777A Expired - Lifetime EP0271316B1 (de) 1986-12-11 1987-12-08 Umbaubare Sprühdüse

Country Status (9)

Country Link
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)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0329449A1 (de) * 1984-04-19 1989-08-23 Spraying Systems Co. Aufbau einer Sprühdüse mit vertieftem Deflektor
EP0497255A2 (de) * 1991-01-30 1992-08-05 Ing. Erich Pfeiffer GmbH Austragdüse für Medien
EP1020571A3 (de) * 1999-01-18 2001-09-05 Hansgrohe AG Sanitärgegenstand, insbesondere Handbrause, mit einer Umschalteinrichtung zur Beeinflussung einer Flüssigkeitsströmung
CN100355502C (zh) * 2006-01-26 2007-12-19 朱根荣 喷雾装置
US7584908B2 (en) 2005-10-27 2009-09-08 Sta-Rite Industries, Llc Spray nozzle apparatus and method
EP3068545A4 (de) * 2013-11-12 2017-04-26 Spraying Systems Co. Sprühdüse für katalytisches kracken mit internem flüssigkeitspartikeldispersionsring
CN107088484A (zh) * 2017-06-28 2017-08-25 迈德乐喷雾系统广州有限公司 一种小型空气雾化喷嘴

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030619A1 (fr) * 1996-02-26 1997-08-28 Matsushita Electric Industrial Co., Ltd. Appareil de douche-bain et diffuseur
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
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2075369A (en) * 1980-04-28 1981-11-18 Spraying Systems Co Air-efficient atomizing spray nozzle
GB2157591A (en) * 1984-04-19 1985-10-30 Spraying Systems Co Air-assisted spray nozzle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2075369A (en) * 1980-04-28 1981-11-18 Spraying Systems Co Air-efficient atomizing spray nozzle
GB2157591A (en) * 1984-04-19 1985-10-30 Spraying Systems Co Air-assisted spray nozzle

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0329449A1 (de) * 1984-04-19 1989-08-23 Spraying Systems Co. Aufbau einer Sprühdüse mit vertieftem Deflektor
EP0497255A2 (de) * 1991-01-30 1992-08-05 Ing. Erich Pfeiffer GmbH Austragdüse für Medien
EP0497255A3 (en) * 1991-01-30 1993-02-03 Ing. Erich Pfeiffer Gmbh & Co. Kg Delivering nozzle for media
EP1020571A3 (de) * 1999-01-18 2001-09-05 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
EP3068545A4 (de) * 2013-11-12 2017-04-26 Spraying Systems Co. Sprühdüse für katalytisches kracken mit internem flüssigkeitspartikeldispersionsring
US9925508B2 (en) 2013-11-12 2018-03-27 Spraying Systems Co. Catalytic cracking spray nozzle with internal liquid particle dispersion ring
CN107088484A (zh) * 2017-06-28 2017-08-25 迈德乐喷雾系统广州有限公司 一种小型空气雾化喷嘴

Also Published As

Publication number Publication date
DE3781529T2 (de) 1993-02-04
DK169611B1 (da) 1994-12-27
JP2802496B2 (ja) 1998-09-24
DK648987D0 (da) 1987-12-10
KR950000003B1 (ko) 1995-01-07
CA1291781C (en) 1991-11-05
JPS63185469A (ja) 1988-08-01
AU610098B2 (en) 1991-05-16
DK648987A (da) 1988-06-12
BR8706761A (pt) 1988-07-19
MX164218B (es) 1992-07-27
KR880007134A (ko) 1988-08-26
EP0271316B1 (de) 1992-09-02
EP0271316A3 (en) 1990-01-10
AU8207187A (en) 1988-06-16
DE3781529D1 (de) 1992-10-08

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