EP2923771A1 - Tuyère d'injecteur - Google Patents

Tuyère d'injecteur Download PDF

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Publication number
EP2923771A1
EP2923771A1 EP15158170.9A EP15158170A EP2923771A1 EP 2923771 A1 EP2923771 A1 EP 2923771A1 EP 15158170 A EP15158170 A EP 15158170A EP 2923771 A1 EP2923771 A1 EP 2923771A1
Authority
EP
European Patent Office
Prior art keywords
housing
injector
passage opening
injector nozzle
mixing chamber
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
EP15158170.9A
Other languages
German (de)
English (en)
Other versions
EP2923771B1 (fr
Inventor
Oliver Buck
Joaquim Gomes-Alves
Thomas Schenk
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.)
Lechler GmbH
Original Assignee
Lechler GmbH
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 Lechler GmbH filed Critical Lechler GmbH
Publication of EP2923771A1 publication Critical patent/EP2923771A1/fr
Application granted granted Critical
Publication of EP2923771B1 publication Critical patent/EP2923771B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B05B15/658—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits the spraying apparatus or its outlet axis being perpendicular to the flow conduit
    • 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
    • B05B7/0425—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 without any source of compressed gas, e.g. the air being sucked by the pressurised liquid
    • 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
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/046—Outlets formed, e.g. cut, in the circumference of tubular or spherical elements
    • 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
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening

Definitions

  • the invention relates to an injector nozzle having a housing and having an injector component arranged at least in sections in the interior of the housing.
  • an injector nozzle is to be improved.
  • an injector nozzle with the features of claim 1 is provided for this purpose.
  • Advantageous developments of the invention are specified in the subclaims.
  • an injector nozzle is provided with a housing and with an injector component arranged at least in sections in the interior of the housing, wherein the injector component has at least one grip section, which can be reached from the outside of the housing.
  • the Injektorbauteil or a handle portion of the Injektorbauteils is accessible from the outside of the housing, the Injektorbauteil can be easily removed without tools from the housing of the injector. It is essential that the handle portion of the Injektorbauteils is accessible from an outer side of the housing, so that does not, even when removed from a nozzle carrier housing, the Injektorbauteil must be taken from the upstream side but simply grabbed from the outside of the housing forth on the handle portion and, for example, can be pushed out of the housing against the flow direction.
  • the housing has at least one passage opening, wherein the at least one passage opening is suitable for at least partially engaging a human finger, and wherein the handle portion of the injector component can be reached through the passage opening.
  • the injector component By providing a passage opening and a handle section on the injector component, the injector component can be removed from the housing of the injector nozzle without tools in a very simple manner be removed. This is very advantageous especially in agricultural applications. Injector components of injector nozzles sometimes need to be changed or removed to clean them. The ability to remove the injector without tools from the housing in the injector according to the invention facilitates such maintenance considerably and allows them to be performed quickly and easily during field work. It should be noted that in agricultural engineering due to the spraying of pesticides usually protective gloves must be worn. This complicates the handling of tools, so that with the invention, a significant improvement in the handling of an injector nozzle is achieved.
  • the housing wall has two opposite passage openings.
  • the at least one passage opening is rectangular or oval-shaped.
  • a rectangular or oval-shaped passage opening When the injector component is inserted into the housing, a rectangular or oval-shaped passage opening provides a certain sliding path. A longer side or dimension of the passage openings lies parallel to the Aus Anlagenungichtung of the injector.
  • the injector component has corrugation at least in a region which in the assembled state lies in the region of the at least one passage opening of the housing.
  • the grip of the grip portion can be substantially improved, so that even with gloved fingers, the injector component can be easily removed.
  • the injector component has a mixing chamber housing which forms an air intake space with an inner wall of the housing, and at least one actuating web arranged at a distance from the mixing chamber housing, which in the assembled state of the injector component is arranged in the region of the at least one passage opening of the housing.
  • the actuating bar can be arranged with the handle portion within the housing and between the actuating bar and the mixing chamber housing a portion of the Luftansaugraums is defined.
  • the housing has two opposite passage openings and the injector component has two opposite actuating webs, each with a grip section.
  • the injector component By providing two opposite gripping sections, not only can the injector component be reliably gripped and displaced, but also the introduction of force during the ejection of the injector component takes place symmetrically with respect to it, so that jamming or tilting of the injector component when pushing out is not to be feared. In any case, the symmetrical application of force to the opposite actuating webs and a stuck injector component can be moved out of the housing reliably and without tools.
  • the at least one actuating web with the handle portion extends from a flange connected to the mixing chamber housing and projects freely from the flange.
  • the actuating webs can be arranged immediately behind the inner wall of the housing and in the region of the through openings and yet remains between the actuating webs and the mixing chamber housing space for a sufficiently large Luftansaugraum.
  • the flange is advantageously designed as a disc-shaped ring or annular flange.
  • the presentation of the Fig. 1 shows a spray assembly 10 according to the invention, which is provided for spraying plants 12 on a ground surface 14.
  • the look of the viewer in Fig. 1 goes from diagonally down to the spray assembly 10 and to the earth's surface 14, the viewer is in Fig. 1 Thus, at an imaginary point below the earth's surface 14.
  • the spray assembly 10 is shown only schematically and has a manifold, which in Fig. 1 is shown only by its central longitudinal axis 16.
  • Several nozzle devices 18, 20 are arranged on the distributor tube, wherein the second nozzle device 20 is only schematically indicated as a block-shaped block.
  • Each of the nozzle devices 18, 20 has a nozzle carrier 22 and a double flat jet nozzle 24, which is designed as an injector nozzle.
  • the Doppelflachstrahldüse 24 is attached via a bayonet fitting to a matching flange of the nozzle carrier 22, which in turn is disposed on the manifold and is supplied to the sprayed pesticide to the Doppelflachstrahldüse 24.
  • the double flat jet nozzle 24 or injector nozzle has a housing 26 which is provided with a nozzle mouthpiece 28 having a first outlet opening 30 and a second outlet opening 32.
  • the spray assembly 10 is moved along a direction of movement 34 over the earth's surface 14.
  • In the nozzle housing 26 is an in Fig. 1 only partially detectable injector component 36 is arranged. By means of the injector component 36, air is added to the plant protection agent to be sprayed within the nozzle housing 26 so that coarse drops emerge from the outlet openings 30, 32, which are subjected to only slight wind drift.
  • This first flat beam 38 has a beam angle ⁇ .
  • This second flat jet 42 exits.
  • This second flat jet 42 has an exit angle ⁇ to the central longitudinal axis 44 of the housing 26.
  • This second flat jet 42 has a beam angle ⁇ .
  • the outlet openings 30, 32 and thus the in Fig. 1 lower end of the housing 26 are arranged at a distance A from the earth's surface 14.
  • the flat beams 40, 42 impinge with a beam width B on the earth's surface 14, wherein the beam width B of the two flat beams 40, 42 on the earth's surface 14 in the double flat jet nozzle 24 according to the invention is the same size.
  • the exit angles ⁇ , ⁇ and the beam angles ⁇ , ⁇ of the two flat beams 40, 42 emitted by the outlet openings 30, 32 are matched to one another such that both flat beams 40, 42 are the same at the distance A and thus on the earth surface Beam width B have.
  • the two nozzle devices 18, 20 are arranged at a distance C along the central longitudinal axis 16 of the distributor tube. This distance C is matched to the beam width B, so that the flat jets of the respective double flat jet nozzles overlap in the edge region.
  • a handle portion 44 which has a corrugation and which lies in the region of a passage opening 46 of the housing 26.
  • the grip portion 44 is disposed immediately behind the through hole 46, which has a rectangular shape. A longer extension of the passage opening 46 lies parallel to the central longitudinal axis 40 of the housing 26.
  • the grip section 44 can be grasped through the passage opening 46 by a human finger and thereby the injector component 36 can engage in Fig. 1 are pushed up out of the housing 26. This is of course only possible if the housing 26 is removed from the nozzle carrier 22.
  • the presentation of the Fig. 2 shows the Doppelflachstrahldüse 24 or injector nozzle the Fig. 1 cut and exploded view. As a result, the injector component 36 is shown outside the housing 26, whereas the nozzle orifice 28 is already inserted into the housing 26.
  • the injector component 36 has a mixing chamber 50 which has an initially circular-cylindrical cross-section and then widens conically in the outflow direction.
  • the plant protection product in the form of a single spray over a in Fig. 2 not shown aperture of the in Fig. 2 initiated right end ago.
  • This spray generates a negative pressure in the mixing chamber 50 in the region of its entry and thereby entrains air, which can enter the mixing chamber 50 via a ventilation opening 52.
  • a second ventilation opening 52 lies opposite, is in Fig. 2 but not recognizable.
  • the injector member 36 is provided with two actuating ribs 54 facing each other and, as in FIG Fig. 1 can be seen in sections, are accessible through the passage openings 46 of the housing 26 in the region of their respective handle portion 44.
  • the injector component can be removed without tools from the housing or re-installed in this.
  • the injector 36 is inserted from the upstream in the outflow side of the housing 26 in this. To push out the Injektorbauteils 36 this is attacked with two fingers on the handle portions 44 and then, in Fig. 2 to the right, out of the housing 26, ie against the outflow, pushed out.
  • the housing 26 has a circular cylindrical interior 51 into which the portion of the Injektorbauteils 36, which forms the mixing chamber 50, is inserted.
  • This interior 51 is provided with two ventilation openings 76 which connect the interior with the environment.
  • an annular space 70 is formed, which then passes over the ventilation openings 76, see Fig. 3 , communicating with the environment.
  • the housing 26 has seen from its outer side, the two rectangular passage openings 46 which are not open to the interior 51, but the only break an outer shell of the housing 26 and in the disassembled state of Fig. 2 allow access to an outer wall of the circular cylindrical interior 51.
  • a slot 73 is formed in each case, in which then in Fig. 2 Coming from the right, the actuating webs 54 of the injector component 36 are inserted.
  • Doppelflachstrahldüse then lies the portion of the Injektorbauteils 36, which forms the mixing chamber 50, within the interior 51, whereas the actuating webs 54 are located outside the interior and the handle portions 44 with the corrugations on the actuating webs 54 through the through holes 74 of the housing 26 are accessible.
  • the injector component 36 into the housing 26 this is, as was discussed, inserted in the flow direction in the housing 26.
  • the grip sections 44 of the actuating webs 54 need only be gripped through the through openings 74 and moved counter to the outflow direction.
  • the passage openings 74 are dimensioned such that a human thumb or a human index finger can reach through the passage openings 74 and reach the grip sections 44 of the actuating webs 54.
  • the injector component 36 can thereby be removed from the housing 26 in a very simple manner, even with a gloved hand, without tools and reinserted therein.
  • Injector component 36 is shown in FIG Fig. 2 not yet provided with an aperture 55, see Fig. 3 , which then defines an inlet 56 for a fluid jet into the mixing chamber 50.
  • the presentation of the Fig. 3 shows a sectional view of the Doppelflachstrahldüse 24 in the assembled state, wherein a sectional plane approximately perpendicular to the sectional plane of Fig. 2 lies.
  • the mouthpiece 28 is installed in the housing.
  • a liquid jet enters the circular-cylindrical section 60 of the mixing chamber 50 during operation via the inlet openings 56 in the diaphragm 55.
  • a diameter of the jet entering the mixing chamber 50 is significantly smaller than the diameter of the cylindrical section 60 of the mixing chamber 50, since the diameter of the inlet opening 56 is also substantially smaller than the diameter of the cylindrical section 60.
  • Negative pressure which leads to air from the annular space 70 enters the mixing chamber 50 via the ventilation openings 52 and mixes with the liquid jet.
  • the cylindrical portion 60 is followed by a frusto-conical extension 62 of the mixing chamber 50.
  • the conical extension 62 then merges into two exit chambers 66 and 68.
  • the outlet openings 30, 32 are cut into the outlet chambers 66, 68.
  • the outlet chambers 66, 68 there is a coarse-droplet distribution of the liquid, which is then discharged via the outlet openings 30, 32, each in the form of a flat jet.
  • annular space 70 is formed, which is vented from the environment through the ventilation openings 76. Ambient air enters the intake openings 52 via this annular space 70.
  • the injector component 36 further has a housing portion with a circumferential groove 72, in which an O-ring made of elastic material is inserted. By means of the O-ring, the injector component 36 is held within the housing 26. The O-ring abuts against the inner wall of the inner space 51 and the injector component 36 has a diameter above and below the groove 72 which is slightly smaller than the diameter of the circular cylindrical inner space 51. When the injector component 36 is pushed in, this will be effected by means of the regions above and below the groove 72 in the interior 51 out
  • FIG. 4 shows the housing 26 with the mouthpiece 28 inserted therein.
  • the housing 26 has the two diametrically opposed rectangular through openings 74, through which the outer wall 82 of the circular cylindrical interior 51 can be seen. Between this outer wall 82 and the rest of the housing 26 is located, see Fig. 2 , In each case a slot 73 through which then the actuating webs 54 of the Injektorbauteils 36 are inserted. The location of these slots 73 at the same time ensures the correct orientation of the Injektorbauteils 36 in the housing 26.
  • the outer wall 82 is formed flat, the inner wall 51 delimiting inner wall circular cylindrical.
  • Fig. 4 is in the housing 26 to recognize one of the ventilation openings 76, then the annular space 70, see Fig. 3 connected to the environment.
  • the presentation of the Fig. 5 shows the Injektorbauteil 36.
  • the two actuating webs 54 are connected by means of an annular flange 78 with the mixing chamber portion of the Injektorbauteils 36.
  • the actuating webs 54 are arranged at a distance from the mixing chamber section.
  • An inner surface 80 of the actuating webs 54 facing the mixing chamber section is planar.
  • the portion 82 of the outer wall of the inner chamber 51, the, see Fig. 4 can be seen through the through holes 74, formed flat.
  • the inner surfaces 80 can thereby easily slide on the flat portions 82 of the outer wall of the inner chamber 51, so that a tool-free insertion and ejection of the Injektor component 36 is easily possible.
  • the annular flange 78 is provided on its upstream side with a circumferential collar 84 which forms a circular cylindrical recess, see Fig. 2 into that then the aperture 55 can be inserted, see Fig. 3 , A downstream bottom of the annular flange 78 is located, see Fig. 3 , In the fully installed state of the Injektorbauteils 36 on an annular shoulder of the housing 26 and thereby defines a fully retracted position of the injector 36.
  • an annular seal 86 is arranged, which then for a sealing of the housing 26th ensures, if this is placed on the nozzle carrier 22, see Fig. 1 ,
  • Fig. 5 is still one of the ventilation openings 52 can be seen leading into the mixing chamber 50.
  • the groove 72 of the Injektorbauteils 30 is in the illustration of Fig. 5 without an O-ring.

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  • Nozzles (AREA)
EP15158170.9A 2014-03-24 2015-03-09 Tuyère d'injecteur Active EP2923771B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014205399.4A DE102014205399B3 (de) 2014-03-24 2014-03-24 Injektordüse

Publications (2)

Publication Number Publication Date
EP2923771A1 true EP2923771A1 (fr) 2015-09-30
EP2923771B1 EP2923771B1 (fr) 2020-01-22

Family

ID=52629458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15158170.9A Active EP2923771B1 (fr) 2014-03-24 2015-03-09 Tuyère d'injecteur

Country Status (4)

Country Link
US (1) US9527100B2 (fr)
EP (1) EP2923771B1 (fr)
DE (1) DE102014205399B3 (fr)
DK (1) DK2923771T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105875570A (zh) * 2016-04-19 2016-08-24 华南农业大学 一种注-吸入式混药器、喷雾器及其喷雾方法
WO2018053494A1 (fr) 2016-09-19 2018-03-22 Spraying Systems Co. Ensemble buse de pulvérisation comportant une buse de pulvérisation monobloc et un capuchon de retenue à raccord démontable

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388508A (en) * 1944-03-04 1945-11-06 Timpson Lewis G Morris Nozzle
DE4338585A1 (de) * 1993-11-11 1995-05-18 Graef Jordt Steffen Injektordüse
WO2006002300A1 (fr) * 2004-06-23 2006-01-05 Spraying Systems Co. Assemblage d'ajutage de pulverisation de liquide d'induction d'air
US20110198420A1 (en) * 2010-02-12 2011-08-18 Senninger Irrigation Inc. Irrigation water bubbler
US20130043321A1 (en) 2011-08-17 2013-02-21 Spraying Systems Co. Multiple discharge air induction spray nozzle assembly
WO2013064989A1 (fr) * 2011-11-04 2013-05-10 Arno Drechsel Diffuseur à jet ayant une buse à remplacement rapide pour des systèmes d'irrigation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5253807A (en) * 1992-03-17 1993-10-19 Wade Manufacturing Co. Multi-outlet emitter and method
US6398128B1 (en) * 2000-01-26 2002-06-04 Spraying Systems Co. Quick disconnect nozzle assembly
ITMN20040015A1 (it) * 2004-07-13 2004-10-13 Bpa Srl Regolatore di flusso
US8556196B2 (en) * 2008-06-30 2013-10-15 Senniger Irrigation Inc. Quick change nozzle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388508A (en) * 1944-03-04 1945-11-06 Timpson Lewis G Morris Nozzle
DE4338585A1 (de) * 1993-11-11 1995-05-18 Graef Jordt Steffen Injektordüse
WO2006002300A1 (fr) * 2004-06-23 2006-01-05 Spraying Systems Co. Assemblage d'ajutage de pulverisation de liquide d'induction d'air
US20110198420A1 (en) * 2010-02-12 2011-08-18 Senninger Irrigation Inc. Irrigation water bubbler
US20130043321A1 (en) 2011-08-17 2013-02-21 Spraying Systems Co. Multiple discharge air induction spray nozzle assembly
WO2013064989A1 (fr) * 2011-11-04 2013-05-10 Arno Drechsel Diffuseur à jet ayant une buse à remplacement rapide pour des systèmes d'irrigation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105875570A (zh) * 2016-04-19 2016-08-24 华南农业大学 一种注-吸入式混药器、喷雾器及其喷雾方法
WO2018053494A1 (fr) 2016-09-19 2018-03-22 Spraying Systems Co. Ensemble buse de pulvérisation comportant une buse de pulvérisation monobloc et un capuchon de retenue à raccord démontable
EP3515604A4 (fr) * 2016-09-19 2020-05-27 Spraying Systems Co. Ensemble buse de pulvérisation comportant une buse de pulvérisation monobloc et un capuchon de retenue à raccord démontable

Also Published As

Publication number Publication date
US20150266045A1 (en) 2015-09-24
US9527100B2 (en) 2016-12-27
DK2923771T3 (da) 2020-04-27
DE102014205399B3 (de) 2015-09-10
EP2923771B1 (fr) 2020-01-22

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