EP0054820B2 - Apparatus for the supply of fluid to a rotating hollow body - Google Patents

Apparatus for the supply of fluid to a rotating hollow body Download PDF

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Publication number
EP0054820B2
EP0054820B2 EP81110210A EP81110210A EP0054820B2 EP 0054820 B2 EP0054820 B2 EP 0054820B2 EP 81110210 A EP81110210 A EP 81110210A EP 81110210 A EP81110210 A EP 81110210A EP 0054820 B2 EP0054820 B2 EP 0054820B2
Authority
EP
European Patent Office
Prior art keywords
nozzle
cone
fluid
spray bell
hollow
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
Application number
EP81110210A
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German (de)
French (fr)
Other versions
EP0054820A1 (en
EP0054820B1 (en
Inventor
Roland Dipl.-Ing. Meisner
Hagen Dr. Dipl.-Ing. Buchholz
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.)
BASF Farben und Fasern AG
Original Assignee
BASF Farben und Fasern AG
BASF Lacke und Farben 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
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Application filed by BASF Farben und Fasern AG, BASF Lacke und Farben AG filed Critical BASF Farben und Fasern AG
Priority to AT81110210T priority Critical patent/ATE10444T1/en
Publication of EP0054820A1 publication Critical patent/EP0054820A1/en
Application granted granted Critical
Publication of EP0054820B1 publication Critical patent/EP0054820B1/en
Publication of EP0054820B2 publication Critical patent/EP0054820B2/en
Expired 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
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member
    • B05B3/1064—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
    • B05B5/0407—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member
    • B05B3/1092—Means for supplying shaping gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0426—Means for supplying shaping gas

Definitions

  • the invention relates to a device for feeding a fluid with a spray bell according to the preamble of the main claim.
  • a generic device is described in FR-A-13 00 555.
  • the axis of rotation of the spray bell is designed as a hollow shaft which only partially protrudes into the spray bell and through which the fluid is sprayed centrally through a nozzle onto a baffle plate system, which is intended to bring about the homogeneous distribution of the fluid over the inner contour of the spray bell .
  • the impact body leads to the fact that air loaded with fluid inside the spray bell can hit the top of the impact body due to backflow, here it leads to deposits which can then lead to irregularities and air inclusions in the lacquer layer to be applied.
  • the invention has for its object to improve the generic device in such a way that it is ensured that the fluid does not fill the cavity of the spray bell au f , but is distributed homogeneously on the inner surface of the spray bell and that at the transfer point from the fluid to the inside of the Spray bell parts are present, which are not constantly washed and washed over by the fluid flow, so that an automatic cleaning takes place when changing the fluid.
  • the solution according to the invention thus consists in that the hollow body, ie. H. the spray bell, the liquid, d. H. the fluid is transferred centrally to the axis of rotation using a hollow cone-shaped lamella.
  • the hollow-cone-shaped lamella is produced by a swirl flow that is suddenly no longer guided, which, before it disintegrates into drops after a determinable distance, from the inner contour of the rotating hollow body, ie. H. the spray bell and the hollow-cone-shaped transfer surface provided therein is detected and taken over.
  • the cone-shaped liquid lamella and thus the transfer point is so stable that all wetted points are constantly overflowed.
  • the cone-shaped liquid lamella which is transferred evenly and rotationally symmetrically to the hollow cone inner contour, is accelerated by the latter and is conveyed away from the feed point by the centrifugal forces that arise.
  • the acceleration can be achieved by friction or by normal forces that act on the lamella, which is broken down into liquid threads.
  • the drawing shows at 1 a spray bell, which has a bell-shaped, rotationally symmetrical hollow body 2 and a cylindrical end part 3, this spray bell being driven at a rotational speed of 30,000 to 40,000 rpm.
  • the cylindrical end part 3 of the spray bell 1 is hollow and a hollow cone nozzle 5 is arranged in the cavity thus created, designated 4 in the drawing, which is designed to be stationary and serves to supply the fluid to be sprayed.
  • the transition from the bell-shaped part 2 to the cavity 4 through the wall of the spray bell takes place via a hollow truncated cone-shaped transfer surface 6, in which grooves 9 are arranged, which are distributed uniformly over the jacket in the cone axis direction and diverge uniformly in relation to the growing cone jacket circumference.
  • the mouth of the frustoconical transfer surface 6 lies at a distance from the mouth of the hollow cone nozzle 5.
  • a bore which radially traverses the wall of the cylindrical part is designated, which generates a negative pressure in the space 4 during the circulation of the spray bell 1 by connecting the interior with the surroundings.
  • an air supply opening opening into the room 4 can be seen, which is designed as an annular gap nozzle 8 and is equipped with control devices, not shown in the drawing, by which a regulated supply of air into the room 4 is possible, so that the vacuum in the room is thereby set becomes possible.
  • a swirl is applied to the liquid, for example a lacquer, which suddenly appears at the edge of the hollow cone nozzle 5 is no longer guided, so that the fluid is split into a cone-shaped lamella.
  • This cone-shaped liquid lamella has a speed component in the axial direction, in such a way that it moves into the rotating hollow body, ie the frustoconical transfer surface 6.
  • the transfer surface of the rotating hollow body is designed so that it takes over the cone-shaped liquid lamella without any significant discontinuity.
  • the hollow-cone-shaped transfer surface 6 is provided with the grooves 9 into which the liquid lamella is inserted and thus distributed itself into individual current threads.
  • the acceleration force now acts as a normal force on these current threads, so that slip-free acceleration of the liquid is ensured.
  • the individual current threads leave the truncated cone-shaped transfer surface 6, in order then to be evenly distributed in the inner contour of the hollow body 2 and to load this inner surface.
  • the transfer point of the fluid in the frustoconical transfer surface 6 is determined by the line L.
  • This line L is spatially lower in the transfer area than the line S, which represents the transfer point of the detergent.
  • the angles of the cone-shaped liquid lamella are determined by the special fluid parameters.
  • the cone angle can also be changed by controlling the pressure on the back of the cone-shaped lamella. This is achieved in that air is continuously pumped out of the half space 4 surrounding the outside of the cone-shaped liquid lamella formed via the bore 7.
  • the outside pressure of the cone-shaped liquid lamella can be defined by metering the supply air via the annular gap nozzle 8.
  • the internal pressure of this cone-shaped liquid lamella has atmospheric pressure, and this makes it possible to regulate the cone angle.

Landscapes

  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • External Artificial Organs (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Joints Allowing Movement (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Tea And Coffee (AREA)

Abstract

The invention relates to a process and a device for transferring a liquid from a stationary feeding component onto a working part which is rotationally driven, for example a spraying-bell, by generating a thin sheet of liquid in the shape of a conical shell, which is stable over a distance of travel which can be defined, it being possible to define the apex angle of this shell in terms of the functional parameters of the liquid, so that it is possible to select different impact positions of the thin sheet of liquid on the transfer portion of the spraying-bell, depending on the particular liquid in question.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Aufgabe eines Fluids mit einer Sprühglocke gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a device for feeding a fluid with a spray bell according to the preamble of the main claim.

Eine gattungsbildende Einrichtung wird in der FR-A-13 00 555 beschrieben. Bei dieser bekannten Einrichtung ist die Drehachse der Sprühglocke als Hohlwelle ausgebildet, die nur teilweise in die Sprühglocke hineinragt und durch die zentrisch zur Drallachse das Fluid über eine Düse auf ein Prallplattensystem aufgespritzt wird, das die homogene Verteilung des Fluids auf die Innenkontur der Sprühglocke bewirken soll. Der Prallkörper führt dazu, daß durch Rückströmung innerhalb der Sprühglocke mit Fluid beladene Luft die Oberseite des Prallkörpers treffen kann, hier zu Ablagerungen führt, die dann zu Unregelmä-13igkeiten und zu Lufteinschlüssen in der aufzubringenden Lackschicht führen können.A generic device is described in FR-A-13 00 555. In this known device, the axis of rotation of the spray bell is designed as a hollow shaft which only partially protrudes into the spray bell and through which the fluid is sprayed centrally through a nozzle onto a baffle plate system, which is intended to bring about the homogeneous distribution of the fluid over the inner contour of the spray bell . The impact body leads to the fact that air loaded with fluid inside the spray bell can hit the top of the impact body due to backflow, here it leads to deposits which can then lead to irregularities and air inclusions in the lacquer layer to be applied.

In der Praxis ist es weiterhin bekannt, das Fluid mit Hilfe eines Rohres exzentrisch zur Drehachse der Sprühglocke in die Sprühglocke einzubringen und von dort auf die Innenkontur radial oder tangential aufzuspritzen. Bei einer solchen Einrichtung ist nicht sichergestellt, daß alle vom Fluid benetzten Flächen auch permanent vom Fluid überströmt werden und so eine selbsttätige Reinigung erfolgen kann.In practice it is also known to introduce the fluid eccentrically to the axis of rotation of the spray bell into the spray bell using a tube and to spray it radially or tangentially from there onto the inner contour. With such a device, it is not ensured that all surfaces wetted by the fluid are also permanently flowed over by the fluid and so that an automatic cleaning can take place.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsbildende Vorrichtung dahingehend zu verbessern, daß sichergestellt wird, daß das Fluid den Hohlraum der Sprühglocke nicht auffüllt, sondern homogen auf der Innenfläche der Sprühglocke verteilt wird und daß an der Übergabestelle vom Fluid auf die Innenseite der Sprühglocke eine Teile vorhanden sind, die durch den Fluidstrom nicht ständig um- und überspült werden, so daß beim Wechsel des Fluids eine selbsttätige Reinigung erfolgt.The invention has for its object to improve the generic device in such a way that it is ensured that the fluid does not fill the cavity of the spray bell au f , but is distributed homogeneously on the inner surface of the spray bell and that at the transfer point from the fluid to the inside of the Spray bell parts are present, which are not constantly washed and washed over by the fluid flow, so that an automatic cleaning takes place when changing the fluid.

Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst.This object on which the invention is based is achieved by the teaching of the main claim.

Vorteilhafte Ausgestaltungen einer solchen Vorrichtung sind in den Unteransprüchen definiert.Advantageous configurations of such a device are defined in the subclaims.

Die erfindungsgemäße Lösung besteht somit darin, daß dem Hohlkörper, d. h. also der Sprühglocke, die Flüssigkeit, d. h. das Fluid, mit Hilfe einer hohlkegelmantelförmigen Lamelle zentrisch zur Drehachse übergeben wird. Die hohlkegelmantelförmige Lamelle wird durch eine plötzlich nicht mehr geführte Drallströmung erzeugt, die, bevor sie nach einer bestimmbaren Wegstrecke in Tropfen zerfällt, von der Innenkontur des sich drehenden Hohlkörpers, d. h. der Sprühglocke und der darin vorgesehenen hohlkegelstumpfförmigen Übergabefläche erfaßt und übernommen wird. Die kegelmantelförmige Flüssigkeitslamelle und damit die Übergabestelle ist so stabil, daß alle benetzten Stellen ständig überströmt werden. Beim Wechsel von einer Flüssigkeit auf eine andere, die, da sie aus vorbestimmten Gründen unverträglich miteinander sind, sich nicht vermischen dürfen, wird eine spezielle und spezifisch leichtere Reinigungsflüssigkeit eingesetzt oder der Druckgradient an der Lamelle geändert, so daß dadurch die Auftreffstelle der kegelmantelförmigen Flüssigkeitslamelle geändert wird. Die dabei entstehende kegelmantelförmige Flüssigkeitslamelle hat einen größeren Öffnungswinkel und überstreicht somit dann auch Zonen, die von der vorhergehenden Flüssigkeitslamelle nicht benetzt wurden, so daß immer sichergestellt wird, daß auch die Übergangsstellen einwandfrei z. B. gereinigt werden können.The solution according to the invention thus consists in that the hollow body, ie. H. the spray bell, the liquid, d. H. the fluid is transferred centrally to the axis of rotation using a hollow cone-shaped lamella. The hollow-cone-shaped lamella is produced by a swirl flow that is suddenly no longer guided, which, before it disintegrates into drops after a determinable distance, from the inner contour of the rotating hollow body, ie. H. the spray bell and the hollow-cone-shaped transfer surface provided therein is detected and taken over. The cone-shaped liquid lamella and thus the transfer point is so stable that all wetted points are constantly overflowed. When changing from one liquid to another, which, because they are incompatible with one another for predetermined reasons, must not mix, a special and specifically lighter cleaning liquid is used or the pressure gradient on the lamella is changed, so that this changes the point of contact of the cone-shaped liquid lamella becomes. The resulting cone-shaped liquid lamella has a larger opening angle and thus then also sweeps over zones that have not been wetted by the previous liquid lamella, so that it is always ensured that the transition points are also perfectly z. B. can be cleaned.

Die gleichmäßig und rotationssymmetrisch der Hohlkegelinnenkontur übergebene kegelmantelförmige Flüssigkeitslamelle wird von dieser beschleunigt und über die dabei entstehenden Fliehkräfte von der Aufgabestelle weggefördert. Die Beschleunigung kann dabei durch Reibung oder durch Normalkräfte, die auf die in Flüssigkeitsfäden zerlegte Lamelle wirken, erreicht werden.The cone-shaped liquid lamella, which is transferred evenly and rotationally symmetrically to the hollow cone inner contour, is accelerated by the latter and is conveyed away from the feed point by the centrifugal forces that arise. The acceleration can be achieved by friction or by normal forces that act on the lamella, which is broken down into liquid threads.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung erläutert.An embodiment of the invention is explained below with reference to the drawing.

Die Zeichnung zeigt bei 1 eine Sprühglocke, die einen glockenförmigen rotationssymetrischen Hohlkörper 2 aufweist sowie ein zylindrisches Endteil 3, wobei diese Sprühglocke mit einer Umlaufgeschwindigkeit von 30 000 bis 40 000 Upm angetrieben wird.The drawing shows at 1 a spray bell, which has a bell-shaped, rotationally symmetrical hollow body 2 and a cylindrical end part 3, this spray bell being driven at a rotational speed of 30,000 to 40,000 rpm.

Der zylindrische Endteil 3 der Sprühglocke 1 ist hohl ausgebildet und in dem so geschaffenen, in der Zeichnung mit 4 bezeichneten Hohlraum ist eine Hohlkegeldüse 5 angeordnet, die feststehend ausgebildet ist und der Zuführung des zu versprühenden Fluids dient. Der Übergang vom glockenförmigen Teil 2 zum Hohlraum 4 durch die Wandung der Sprühglocke erfolgt über eine hohlkegelstumpfförmige Übergabefläche 6, in der Rillen 9 angeordnet sind, die über den Mantel gleichmäßig verteilt in Kegelachsrichtung verlaufen und im Verhältnis zum wachsenden Kegelmantelumfang gleichförmig divergieren. Die Mündung der hohlkegelstumpfförmigen Übergabefläche 6 liegt im Abstand von der Mündung der Hohlkegeldüse 5.The cylindrical end part 3 of the spray bell 1 is hollow and a hollow cone nozzle 5 is arranged in the cavity thus created, designated 4 in the drawing, which is designed to be stationary and serves to supply the fluid to be sprayed. The transition from the bell-shaped part 2 to the cavity 4 through the wall of the spray bell takes place via a hollow truncated cone-shaped transfer surface 6, in which grooves 9 are arranged, which are distributed uniformly over the jacket in the cone axis direction and diverge uniformly in relation to the growing cone jacket circumference. The mouth of the frustoconical transfer surface 6 lies at a distance from the mouth of the hollow cone nozzle 5.

Bei 7 ist eine die Wandung des zylindrischen Teiles radial durchquerende Bohrung bezeichnet, die bei dem Umlauf der Sprühglocke 1 in dem Raum 4 einen Unterdruck erzeugt, indem sie den Innenraum mit der Umgebung verbindet.At 7, a bore which radially traverses the wall of the cylindrical part is designated, which generates a negative pressure in the space 4 during the circulation of the spray bell 1 by connecting the interior with the surroundings.

Gleichzeitig ist eine in den Raum 4 mündende Luftzuführungsöffnung erkennbar, die als Ringspaltdüse 8 ausgebildet und mit in der Zeichnung nicht dargestellten Regeleinrichtungen ausgerüstet ist, durch die eine regulierte Zuführung von Luft in den Raum 4 möglich wird, so daß dadurch die Einstellung des Unterdruckes in Raum möglich wird.At the same time, an air supply opening opening into the room 4 can be seen, which is designed as an annular gap nozzle 8 and is equipped with control devices, not shown in the drawing, by which a regulated supply of air into the room 4 is possible, so that the vacuum in the room is thereby set becomes possible.

Bei 10 ist eine Abdichtung der Hohlkegeldüse 5 gegenüber dem Zuleitungsrohr erkennbar.At 10 a seal of the hollow cone nozzle 5 with respect to the feed pipe can be seen.

Die Wirkungsweise der Einrichtung ist wie folgt :The mechanism works as follows:

In der Hohlkegeldüse 5 wird der Flüssigkeit, beispielsweise einem Lack, ein Drall aufgeprägt, der an der Kante der Hohlkegeldüse 5 plötzlich nicht mehr geführt wird, so daß das Fluid in eine kegelmantelförmige Lamelle aufgespalten wird. Diese kegelmantelförmige Flüssigkeitslamelle besitzt eine Geschwindigkeitskomponente in axialer Richtung, und zwar derart, daß sie sich in den drehenden Hohlkörper, d. h. die hohlkegelstumpfförmige Übergabefläche 6, hineinbewegt. Die Übergabefläche des rotierenden Hohlkörpers ist so gestaltet, daß sie die kegelmantelförmige Flüssigkeitslamelle ohne wesentliche Unstetigkeitstelle übernimmt.In the hollow cone nozzle 5, a swirl is applied to the liquid, for example a lacquer, which suddenly appears at the edge of the hollow cone nozzle 5 is no longer guided, so that the fluid is split into a cone-shaped lamella. This cone-shaped liquid lamella has a speed component in the axial direction, in such a way that it moves into the rotating hollow body, ie the frustoconical transfer surface 6. The transfer surface of the rotating hollow body is designed so that it takes over the cone-shaped liquid lamella without any significant discontinuity.

Um die kegelmantelförmige Rüssigkeitslamelle nun nicht nur über ihre Flüssigkeitsreibung auf die Drehzahl beschleunigen zu müssen, ist die hohlkegelstumpfförmige Übergabefläche 6 mit den Rillen 9 versehen, in die die Flüssigkeitslamelle eingelegt wird und damit sich selbst in einzelne Stromfäden verteilt. Auf diese Stromfäden wirkt nun die Beschleunigungskraft als Normalkraft, so daß eine schlupffreie Beschleunigung der Flüssigkeit sichergestellt ist. An der Kante 11 verlassen die einzelnen Stromfäden die hohlkegelstumpfförmige Übergabefläche 6, um dann in der Innenkontur des Hohlkörpers 2 gleichmäßig verteilt zu werden und diese Innenfläche zu beladen.In order not to have to accelerate the cone-shaped liquid lamella to the speed only via its liquid friction, the hollow-cone-shaped transfer surface 6 is provided with the grooves 9 into which the liquid lamella is inserted and thus distributed itself into individual current threads. The acceleration force now acts as a normal force on these current threads, so that slip-free acceleration of the liquid is ensured. At the edge 11, the individual current threads leave the truncated cone-shaped transfer surface 6, in order then to be evenly distributed in the inner contour of the hollow body 2 and to load this inner surface.

Aus der Zeichnung ist zu ersehen, daß die Übergabestelle des Fluids in der hohlkegelstumpfförmigen Übergabefläche 6 durch die Linie L bestimmt wird. Diese Linie L liegt räumlich tiefer in der Übergabefläche als die Linie S, die die Übergabestelle des Spülmittels darstellt. Die Winkel der kegelmantelförmigen Flüssigkeitslamelle werden durch die speziellen Fluidparameter bestimmt.From the drawing it can be seen that the transfer point of the fluid in the frustoconical transfer surface 6 is determined by the line L. This line L is spatially lower in the transfer area than the line S, which represents the transfer point of the detergent. The angles of the cone-shaped liquid lamella are determined by the special fluid parameters.

Wenn diese Möglichkeit jedoch zu einer sicheren Trennung der beiden Auftreffstellen nicht ausreicht, so läßt sich der Kegelwinkel auch durch die Steuerung des Druckes auf der Rückseite der kegelmantelförmigen Lamelle verändern. Dies wird dadurch erreicht, daß über die Bohrung 7 ständig aus dem die Außenseite der gebildeten kegelmantelförmigen Flüssigkeitslamelle umgebenden Halbraum 4 Luft abgepumpt wird. Über eine Dosierung der Zuluft über die Ringspaltdüse 8 läßt sich der Außendruck der kegelmantelförmigen Flüssigkeitslamelle definieren. Der Innendruck dieser kegelmantelförmigen Flüssigkeitslamelle besitzt Atmosphärendruck, und hierdurch ist die Einregelung des Kegelwinkels möglich.However, if this option is not sufficient for a safe separation of the two impact points, the cone angle can also be changed by controlling the pressure on the back of the cone-shaped lamella. This is achieved in that air is continuously pumped out of the half space 4 surrounding the outside of the cone-shaped liquid lamella formed via the bore 7. The outside pressure of the cone-shaped liquid lamella can be defined by metering the supply air via the annular gap nozzle 8. The internal pressure of this cone-shaped liquid lamella has atmospheric pressure, and this makes it possible to regulate the cone angle.

Claims (5)

1. Device for dispensing a fluid by means of a spray bell (1) into the centre of which a fluid is introduced in the shape of a partly conical envelope and which has at the rear a cylindrical end portion (3), comprising a fixed nozzle for generating the envelope of fluid and a hollow truncated cone transfer surface (6) which is inside the rotating spray bell (1) and opposite, and a distance away from, the mouth of the nozzle and which is tapered toward the nozzle characterised in that the nozzle is designed as a hollow cone nozzle (5) and is arranged in the cylindrical end portion (3), the hollow truncated cone transfer surface (6) having been fashioned out between a conical spray bell portion (2) and the cylindrical portion (3), and the transfer surface (6), viewed in the direction of flow of the fluid, is arranged completely behind the hollow cone nozzle (5) at a distance therefrom, and in that the frustoconical spray bell portion (2) likewise tapers the hollow cone nozzle (5).
2. Device according to Claim 1, characterised in that channels (9) have been machined into the inner surface of the hollow truncated cone transfer surface (6) in such a way that they are evenly distributed over the shell, extend in the axial direction of the cone, and are uniformly divergent in proportion to the increasing circumference of the surface of the cone.
3. Device according to Claim 1 or 2, characterised by one or more radial bores (7) arranged in the cylindrical end portion (3) of the spray bell (1) and connecting the inside space with the outside.
4. Device according to one or more of the preceding claims characterised by air admittance openings (annular nozzle (8)) to the inside space (4) of the cylindrical portion (3) of the spray bell (1) and means for controlling the pressure of the air admitted through these air admittance openings.
5. Device according to one or more of the preceding claims, characterised in that the rotational speed of the spray bell (1) is 15,000 r.p.m. or higher.
EP81110210A 1980-12-18 1981-12-07 Apparatus for the supply of fluid to a rotating hollow body Expired EP0054820B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81110210T ATE10444T1 (en) 1980-12-18 1981-12-07 METHOD AND DEVICE FOR ADJUSTING A FLUID TO A ROTATING HOLLOW BODY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3047670 1980-12-18
DE3047670A DE3047670C2 (en) 1980-12-18 1980-12-18 "Method and device for applying a fluid to a rotating hollow body"

Publications (3)

Publication Number Publication Date
EP0054820A1 EP0054820A1 (en) 1982-06-30
EP0054820B1 EP0054820B1 (en) 1984-11-28
EP0054820B2 true EP0054820B2 (en) 1989-06-28

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ID=6119446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110210A Expired EP0054820B2 (en) 1980-12-18 1981-12-07 Apparatus for the supply of fluid to a rotating hollow body

Country Status (10)

Country Link
US (1) US4429833A (en)
EP (1) EP0054820B2 (en)
JP (1) JPS57140661A (en)
AT (2) ATE10444T1 (en)
BR (1) BR8108211A (en)
DE (2) DE3047670C2 (en)
DK (1) DK149504C (en)
ES (1) ES8301123A1 (en)
MX (1) MX155218A (en)
ZA (1) ZA818572B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4927081A (en) * 1988-09-23 1990-05-22 Graco Inc. Rotary atomizer
US5078321A (en) * 1990-06-22 1992-01-07 Nordson Corporation Rotary atomizer cup
US6152382A (en) * 1999-01-14 2000-11-28 Pun; John Y. Modular spray unit and method for controlled droplet atomization and controlled projection of droplets
DE102006022057B3 (en) * 2006-05-11 2007-10-31 Dürr Systems GmbH Rotary atomizer`s application unit for use in varnishing machine, has surface layer, on which thin coating medium with specific film thickness is formed, where layer reduces boundary surface friction between medium and overflow surface
EP2900383B1 (en) 2012-09-28 2018-04-25 AGCO Corporation Horizontally rotating controlled droplet application
CN105834019B (en) * 2016-05-24 2018-06-19 湖南农业大学 Hydraulic type high pressure water static nozzle

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161016A (en) 1936-06-11 1939-06-06 Clifford H Carr Spray nozzle
US2728606A (en) 1954-05-24 1955-12-27 Ransburg Electro Coating Corp Liquid feeding apparatus
US2922584A (en) * 1956-11-19 1960-01-26 Ford Motor Co Dual spray painting
NL269353A (en) 1959-12-08 1900-01-01
FR1300555A (en) * 1959-12-08 1962-08-03 Interplanetary Res & Dev Corp Method and apparatus for applying spray coatings
BE634983A (en) * 1962-07-17
DE1240764B (en) * 1963-03-15 1967-05-18 Mueller Ernst Fa Process for the electrostatic coating of objects with paint and a device for carrying out the process
DE2659428C2 (en) * 1976-12-29 1981-11-19 Ransburg Gmbh, 6056 Heusenstamm Device for the electrostatic spraying of liquid coating material to be applied to workpieces
AU517923B2 (en) * 1977-02-07 1981-09-03 Ransburg Japan Ltd. Rotary paint atomizing device
JPS5829150B2 (en) * 1977-12-03 1983-06-21 ナカヤ産業株式会社 spray device
DE8000844U1 (en) * 1980-01-15 1980-04-24 Behr, Hans, 7000 Stuttgart Device for atomizing liquid paint

Also Published As

Publication number Publication date
ZA818572B (en) 1983-01-26
DE3047670A1 (en) 1982-07-08
EP0054820A1 (en) 1982-06-30
DK545881A (en) 1982-06-19
ES508160A0 (en) 1982-11-16
ATE10444T1 (en) 1984-12-15
DE3047670C2 (en) 1989-02-23
BR8108211A (en) 1982-10-05
ATA540781A (en) 1987-05-15
DE3167507D1 (en) 1985-01-10
JPS57140661A (en) 1982-08-31
AT384560B (en) 1987-12-10
JPH0117746B2 (en) 1989-03-31
DK149504C (en) 1987-01-12
ES8301123A1 (en) 1982-11-16
MX155218A (en) 1988-02-04
DK149504B (en) 1986-07-07
EP0054820B1 (en) 1984-11-28
US4429833A (en) 1984-02-07

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