EP0938930A2 - Dispositif de pulvérisation de liquides - Google Patents

Dispositif de pulvérisation de liquides Download PDF

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Publication number
EP0938930A2
EP0938930A2 EP98124716A EP98124716A EP0938930A2 EP 0938930 A2 EP0938930 A2 EP 0938930A2 EP 98124716 A EP98124716 A EP 98124716A EP 98124716 A EP98124716 A EP 98124716A EP 0938930 A2 EP0938930 A2 EP 0938930A2
Authority
EP
European Patent Office
Prior art keywords
rotary valve
spraying device
air supply
actuator
locking
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.)
Withdrawn
Application number
EP98124716A
Other languages
German (de)
English (en)
Inventor
Eugen Spirig
Daniel Dipl.-Ing. Troxler (Htl)
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.)
Wagner International AG
Original Assignee
Wagner International AG
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 Wagner International AG filed Critical Wagner International AG
Publication of EP0938930A2 publication Critical patent/EP0938930A2/fr
Withdrawn legal-status Critical Current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
    • 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
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter

Definitions

  • the invention relates to a spray device for atomizing Liquids, especially paints and varnishes, with a z. B. as Spray gun trained housing and attached to this Atomizer head, in which a flat jet nozzle is exchangeable for hydrostatic Atomizing the liquid fed under pressure is clamped and the Adjustment of the width of the liquid jet two in extension of the longitudinal axis arranged of the liquid jet, for example in an insert has incorporated nozzle-like outlet openings, which compressed air via a separate air supply duct incorporated into the housing can be supplied.
  • Spray devices of this type are in numerous spray guns different configurations known.
  • the one from the flat jet nozzle escaping liquid jet is often supplied by separately Form and atomizing air is applied to the spray pattern in the edge areas to influence favorably. If necessary, however, is the width of the liquid jet to change, it is necessary because the fed to the flat jet nozzle Compressed air volume is constant, a flat jet nozzle with a corresponding choose a modified opening angle and insert it into the atomizer head.
  • This not only means that the work carried out is temporarily interrupted, so that delays and sometimes impairments of the spray pattern are inevitable, but there must always be a large number of high quality and therefore expensive flat jet nozzles with different opening angles be kept ready. An optimal workflow is therefore often not given.
  • the object of the invention is therefore, the spray device for atomizing To improve liquids of the aforementioned type in such a way that it it is possible to use several flat spray nozzles to spray several different widths to generate without the when switching to another spray pattern width Spray work must be interrupted.
  • the construction effort required for this should be low are also to be kept, the individual with an atomizer nozzle generating spray angle can be set reproducibly without difficulty can.
  • this is in a spray device for atomizing Liquids of the aforementioned type achieved in that the controlled Introducing the compressed air into the air supply duct in this by means of a Grip actuated rotary valve is used, which with a in the direction of Air supply duct open recess and a height arranged Through opening is provided, through which the recess with a Air supply line is connectable, and that the rotary valve on the Air supply channel facing end face one or more preferably one or has wedge-shaped locking lugs on both sides, which with a against the force of a spring axially displaceable in the air supply channel used one-piece or multi-piece actuator equipped with locking cams work together.
  • the actuator designed as a sleeve by means of or several protruding attachments z.
  • B. in the form of extension bars or Pins inserted into the housing parallel to the air duct intervening recesses with axial play, non-rotatable and axial to be slidably supported and the actuator in the direction of the rotary valve
  • the actuator two preferably offset by 90 ° to each other and over the locking cams axially projecting stop bars should have, between which the Locking lugs of the rotary slide valve interacting locking cams are provided, and the locking elements of the actuator in two radially symmetrical to each other to arrange arranged segments, each by three between two Stop cams provided axially perpendicular to each other and four are formed by this limited locking grooves, in the two on the Engage the rotary tabs on the locking tabs.
  • the actuator can also have two or several each against the force of a spring axially in the direction of Rotary valve slidably arranged in the housing with ball or be provided with conical end faces provided in the these associated end face of the rotary valve incorporated and with Engage recesses equipped with counter surfaces.
  • a spring axially in the direction of Rotary valve slidably arranged in the housing with ball or be provided with conical end faces provided in the these associated end face of the rotary valve incorporated and with Engage recesses equipped with counter surfaces.
  • the actuator can also be inserted into the air duct and one end attached to the housing over a range of preferably 90 ° extending leaf spring may be formed, at the free end of a Locking cam is attached, with in the face of the facing this Rotary slide integrated recesses cooperates.
  • the adjustment range of the rotary valve can be done with the latter two Embodiments of the actuator preferably by one of the locking bolts facing end face or protruding pin from the housing, which in a in the Engages the housing or the rotary valve incorporated ring groove segment, limited be.
  • the through opening incorporated in the rotary valve can be in the form of a Elongated hole, a flared slot or similar be formed, the handle of the rotary valve can by a with this be formed non-rotatably connected fitting, one half of which Half cylinder and the other half of one than in itself there is an isosceles triangle and its outer surface is wholly or partially corrugated.
  • the spraying device shown in FIG. 1 and designated 1 serves for hydrostatic atomization of liquids, especially paints and Varnishes that are supplied under pressure via a line 11, and is in Formed a spray gun 2.
  • the spray gun 2 has a housing 3, to which an atomizer head 4 is detachably attached by means of a union nut 9, in which is held in a nozzle holder 6 by means of an insert 7 Flat jet nozzle 5 is clamped.
  • In the insert 7 there are two in Extension of the longitudinal axis of the emerging from the flat jet nozzle 5 Liquid openings FS arranged nozzle-like outlet openings 8 incorporated, from which to limit the width of the liquid jet FS Compressed air can flow out.
  • On the atomizer head 4 is by means of the union nut 9 further attached a protection member 10.
  • the flat jet nozzle 5 is in order to be able to supply liquid to it in a controlled manner Shut-off valve 17 upstream, by means of a hand lever 13 and one this delayed adjustable tie rod 16 can be opened.
  • the hand lever In this embodiment, 13 is firmly connected to a pressure member 14, on which a in an air supply line 12 inserted valve body 15 is attached. Becomes the hand lever 13 is pivoted to the left, so the pressure member 14 is also after moved to the left and the air supply line 12, since the valve body 15 of its seat is lifted open.
  • valve body 15 acts on a fastened to the pull rod 16 Driver 16 ', so that by its displacement and the displacement of the this firmly connected tie rod 16, the shut-off valve 17 against the force a return spring 18 is opened.
  • the atomizer head 4 compressed air from the Air supply line 12 to z. B. to clean a workpiece.
  • an air supply duct 20 is incorporated into the housing 3, which is connected to the outlet openings 8 and optionally to the Air supply line 12 is connectable.
  • This is in the as a stepped hole trained air supply duct 20, a rotary valve 21 is used, the one in Direction of the air supply channel 20 open recess 22 and in its height has a through opening 23 so that the air supply channel 20 by means of the Rotary slide valve 21 can be connected to the air supply line 12 in a controlled manner.
  • To the Actuation of the rotary valve 21 is with a shaft 24 which is in a sleeve 26 is rotatably mounted, and a handle 25 connected to the shaft 24 Mistake.
  • An actuator 31 is also assigned to the rotary slide valve 21, but is arranged axially displaceably in the air supply duct 20.
  • an actuator 31 is also assigned to the rotary slide valve 21, but is arranged axially displaceably in the air supply duct 20.
  • two extensions 34 in Form of extension bars equipped, and in the housing 3 are parallel to the air supply duct 20, two recesses 35 are incorporated, into which the Engage extensions 34 with axial play.
  • this has on the actuator 31st facing end face two diametrically opposed Lugs 27 and the actuator 31 is associated with these locking cams 38th and locking grooves 39 into which the locking lugs 27 of the rotary valve 21st intervention.
  • the arrangement of the locking cams 38 and locking grooves 39 is here like this 7, in particular, is chosen such that it is radially symmetrical opposite each other are formed from two segments that also provided with stop surfaces 36 on which the Lugs 27 of the rotary valve 21 can be applied in both end positions, are limited.
  • the actuator 31 With the help of the locking cams 38 of the actuator 31st interacting locking lugs 27 of the rotary valve 21, via the one axially directed repelling force on the locking cams 38 when turning the rotary valve 21st is transmitted, the actuator 31 can thus axially in the direction of Air duct 20 are moved so that the rotary valve 21 each a division can be rotated.
  • the rotary slide valve 21 can therefore have four Assume operating positions, in the one shown in Figure 2 End position there is no connection between the air supply line 12 and the air supply duct 20.
  • the rotary valve 21 by means of as Fitting 28 trained grip 25 according to the selected division the locking cam 38 and the locking grooves 39 rotated by 30 ° communicates the Through opening 23 partially with the air supply line 12, so that in a Unit of time a predetermined amount of air in the air supply duct 20 and thus can reach the outlet openings 8.
  • the rotary valve 21 in turn Twisted 30 °, as shown in Figure 4, is the coverage of the Through opening 23 and 23 ', the z. B.
  • the actuator 41 can also be formed by two locking bolts 42 be, each axially displaceable against the force of a spring 44 in a sleeve 43 are used, which in turn are machined in the housing 3 bores 45 are arranged.
  • the locking bolts 42 which have a spherical end face have, act, as can be seen in particular in Figure 11, in the facing end face of the rotary valve 21 'machined recesses 46 together.
  • Edge 47 of the air supply channel 20 arranged pin 47 is provided, which in engages an annular groove segment 48 machined into the rotary valve 21 '.
  • the actuator 51 is one that extends over approximately 180 ° ring-shaped leaf spring 52 is provided which at one end Has locking cams 53 and in the other end area by means of a screw 54 the housing 3 is attached.
  • the locking cam 53 acts with several in the End face of the rotary valve 21 '' machined recesses 55 together. And in turn serves to limit its adjustment path into an annular groove segment 57 engaging pin 56 attached to the housing 3.

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  • Nozzles (AREA)
EP98124716A 1998-02-25 1998-12-28 Dispositif de pulvérisation de liquides Withdrawn EP0938930A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19807974 1998-02-25
DE1998107974 DE19807974C1 (de) 1998-02-25 1998-02-25 Spritzvorrichtung zum Zerstäuben von Flüssigkeiten

Publications (1)

Publication Number Publication Date
EP0938930A2 true EP0938930A2 (fr) 1999-09-01

Family

ID=7858908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98124716A Withdrawn EP0938930A2 (fr) 1998-02-25 1998-12-28 Dispositif de pulvérisation de liquides

Country Status (3)

Country Link
EP (1) EP0938930A2 (fr)
JP (1) JPH11314053A (fr)
DE (1) DE19807974C1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112878636B (zh) * 2021-01-18 2023-03-31 湖南国际华远装饰有限公司 一种节能环保墙面喷漆装置
CN117225609B (zh) * 2023-11-09 2024-01-26 成都锦胜雾森环保科技有限公司 一种雾化喷头及其使用方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT206322Z2 (it) * 1985-09-24 1987-08-10 Azzimonti Giovanni Mec Srl Dispositivo di regolazione della mandata d'aria in una pistola a spruzzo.
DE29503205U1 (de) * 1995-02-25 1995-07-27 Bersch & Fratscher GmbH, 63791 Karlstein Spritzpistole zum Auftragen von Flüssigkeit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
DE19807974C1 (de) 1999-07-29
JPH11314053A (ja) 1999-11-16

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