EP0054820A1 - Dispositif pour la distribution d'un fluide sur un corps creux rotatif - Google Patents

Dispositif pour la distribution d'un fluide sur un corps creux rotatif Download PDF

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Publication number
EP0054820A1
EP0054820A1 EP81110210A EP81110210A EP0054820A1 EP 0054820 A1 EP0054820 A1 EP 0054820A1 EP 81110210 A EP81110210 A EP 81110210A EP 81110210 A EP81110210 A EP 81110210A EP 0054820 A1 EP0054820 A1 EP 0054820A1
Authority
EP
European Patent Office
Prior art keywords
cone
fluid
bell
hollow
shaped
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
EP81110210A
Other languages
German (de)
English (en)
Other versions
EP0054820B1 (fr
EP0054820B2 (fr
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6119446&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0054820(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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/de
Publication of EP0054820A1 publication Critical patent/EP0054820A1/fr
Publication of EP0054820B1 publication Critical patent/EP0054820B1/fr
Application granted granted Critical
Publication of EP0054820B2 publication Critical patent/EP0054820B2/fr
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, i.e. the spraying being effected by centrifugal forces
    • 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, i.e. the spraying being effected by centrifugal forces 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, i.e. the spraying being effected by centrifugal forces
    • 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 method for applying a fluid, e.g. of a liquid coating agent from a stationary feed part to the inner contour of a rotating hollow body, e.g. a spray bell.
  • the invention further relates to an apparatus for performing such a method.
  • the axis of rotation is performed as a hollow shaft, which only partially fits into the hollow body, i.e. the spray bell protrudes and through which the fluid is sprayed centrically to the swirl axis through a nozzle onto a pre-filling plate system, which should result in the homogeneous distribution of the fluid on the inner contour of the hollow cone.
  • the moving body moves at a high angular speed, so that sliding seals cannot be used.
  • the fluid must not fill the cavity of the rotating body, but must be distributed homogeneously on the inner surface of the cavity and that there are no parts at the transfer point that are not constantly washed and washed over by the fluid flow, so that an automatic cleaning takes place when changing the fluid.
  • the object of the invention is to meet these practical requirements.
  • the procedure is preferably such that a vacuum of its size can be set on the outside of the cone-shaped liquid lamella, while about atmospheric pressure is brought into effect on the inside of the cone-shaped liquid lamella.
  • the fluid producing the cone-shaped liquid lamella be guided into the hollow cone nozzle with a controllable pressure, this pressure being adjustable according to the viscosity of the fluid - also as a function of the throughput.
  • the device for carrying out the method according to the invention is characterized by a fixed hollow cone nozzle for producing the cone-shaped liquid lamella and a hollow truncated cone-shaped transfer surface at a distance from the mouth of the hollow cone nozzle in the circumferential spray bell, the hollow truncated cone-shaped transfer surface becoming the hollow cone.
  • the solution according to the invention thus consists in that the liquid, ie the fluid, is transferred to the hollow body, ie, the spray bell, with the help of a hollow cone-shaped lamella centrally to the axis of rotation.
  • the hollow cone-shaped lamella is generated by a suddenly no longer directed DraLL flow, which before it breaks down into drops after a determinable distance, from the inside contour of the rotating hollow body, that is, the spray bell and the hollow cone-shaped transfer surface provided therein is detected and accepted.
  • the cone-shaped liquid layer and thus the transfer point is so stable that all wetted points are constantly overflowed.
  • the cone-shaped liquid layer which is transferred uniformly 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 lamellas 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, wherein this spray bell is driven at a speed of 30,000 to 4,000,000 rpm.
  • the cylindrical end part of the spray bell 1 is hollow and a drain nozzle 5 is arranged in the cavity created in this way, designated 4 in the drawing, which is designed to be stationary and serves to supply the fluid to be sprayed.
  • the transition from bell-shaped part 2 to cavity 4 through the wall of the spray bell takes place via a hollow cone-shaped transfer surface 6, in which grooves are arranged which run parallel to the generator.
  • the mouth of the frustoconical transfer surface 6 lies at a distance from the mouth of the swirl nozzle 5.
  • a radially crossing the wall of the cylindrical part is designated bore, which generates a negative pressure when the spray bell 1 rotates in the space 4.
  • an air supply nozzle opening into the room 4 can be seen at 8, which is equipped with control devices (not shown in the drawing), by means of which a regulated supply of air into the room 4 is possible, so that the vacuum can be set in the room becomes.
  • a seal of the swirl nozzle 5 with respect to the feed pipe can be seen at 1o.
  • the operation of the device according to the invention and the operation of the method according to the invention is as follows:
  • the liquid for example a paint
  • the liquid is imprinted with a DraLL, which is suddenly no longer guided at the edge of the swirl nozzle 5, 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 is provided with grooves 6 into which the liquid lamella is inserted and thus itself divided into individual current threads.
  • the acceleration force acts as a normal force on these current threads, so that a slip-free acceleration of the liquid is ensured.
  • the individual current threads leave the truncated cone-shaped transfer surface, in order then to be evenly distributed in the inner contour of the hollow body 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 flushing agent.
  • 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 lamp. 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 fan bore 7.
  • the outside pressure of the cone-shaped liquid lamella can be defined by dosing 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)
EP81110210A 1980-12-18 1981-12-07 Dispositif pour la distribution d'un fluide sur un corps creux rotatif Expired EP0054820B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81110210T ATE10444T1 (de) 1980-12-18 1981-12-07 Verfahren und vorrichtung zur aufgabe eines fluids auf einen sich drehenden hohlkoerper.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3047670A DE3047670C2 (de) 1980-12-18 1980-12-18 "Verfahren und Vorrichtung zur Aufgabe eines Fluids auf einen sich drehenden Hohlkörper"
DE3047670 1980-12-18

Publications (3)

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

Family

ID=6119446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110210A Expired EP0054820B2 (fr) 1980-12-18 1981-12-07 Dispositif pour la distribution d'un fluide sur un corps creux rotatif

Country Status (10)

Country Link
US (1) US4429833A (fr)
EP (1) EP0054820B2 (fr)
JP (1) JPS57140661A (fr)
AT (2) ATE10444T1 (fr)
BR (1) BR8108211A (fr)
DE (2) DE3047670C2 (fr)
DK (1) DK149504C (fr)
ES (1) ES508160A0 (fr)
MX (1) MX155218A (fr)
ZA (1) ZA818572B (fr)

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 (de) * 2006-05-11 2007-10-31 Dürr Systems GmbH Applikationselement für einen Rotationszerstäuber und zugehöriges Betriebsverfahren
WO2014052348A2 (fr) * 2012-09-28 2014-04-03 Agco Corporation Application par gouttelettes calibrées, en mode rotation horizontale
CN105834019B (zh) * 2016-05-24 2018-06-19 湖南农业大学 液力式高压水静电喷头

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1300555A (fr) * 1959-12-08 1962-08-03 Interplanetary Res & Dev Corp Procédé et appareil pour l'application de revêtements par pulvérisation
DE2804633A1 (de) * 1977-02-07 1978-08-10 Ransburg Japan Ltd Verfahren zum elektrostatischen beschichten und rotierende farben-zerstaeubereinrichtung zum durchfuehren des verfahrens

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922584A (en) * 1956-11-19 1960-01-26 Ford Motor Co Dual spray painting
BE634983A (fr) * 1962-07-17
DE1240764B (de) * 1963-03-15 1967-05-18 Mueller Ernst Fa Verfahren zum elektrostatischen UEberziehen von Gegenstaenden mit Farbe und Vorrichtung zur Durchfuehrung des Verfahrens
DE2659428C2 (de) * 1976-12-29 1981-11-19 Ransburg Gmbh, 6056 Heusenstamm Vorrichtung zum elektrostatischen Versprühen von auf Werkstücken aufzutragendem flüssigen Überzugsmaterial
JPS5829150B2 (ja) * 1977-12-03 1983-06-21 ナカヤ産業株式会社 噴霧装置
DE8000844U1 (de) * 1980-01-15 1980-04-24 Behr, Hans, 7000 Stuttgart Einrichtung zum Vernebeln flüssiger Farbe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1300555A (fr) * 1959-12-08 1962-08-03 Interplanetary Res & Dev Corp Procédé et appareil pour l'application de revêtements par pulvérisation
DE2804633A1 (de) * 1977-02-07 1978-08-10 Ransburg Japan Ltd Verfahren zum elektrostatischen beschichten und rotierende farben-zerstaeubereinrichtung zum durchfuehren des verfahrens

Also Published As

Publication number Publication date
DK149504B (da) 1986-07-07
ES8301123A1 (es) 1982-11-16
EP0054820B1 (fr) 1984-11-28
DE3047670A1 (de) 1982-07-08
ES508160A0 (es) 1982-11-16
DE3047670C2 (de) 1989-02-23
DE3167507D1 (en) 1985-01-10
EP0054820B2 (fr) 1989-06-28
JPH0117746B2 (fr) 1989-03-31
JPS57140661A (en) 1982-08-31
DK545881A (da) 1982-06-19
BR8108211A (pt) 1982-10-05
MX155218A (es) 1988-02-04
ATE10444T1 (de) 1984-12-15
ATA540781A (de) 1987-05-15
DK149504C (da) 1987-01-12
ZA818572B (en) 1983-01-26
US4429833A (en) 1984-02-07
AT384560B (de) 1987-12-10

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