EP0054820B2 - Vorrichtung zur Aufgabe eines Fluids auf einen sich drehenden Hohlkörper - Google Patents

Vorrichtung zur Aufgabe eines Fluids auf einen sich drehenden Hohlkörper 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
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0054820B1 (de
EP0054820A1 (de
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(B2) "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/de
Publication of EP0054820B1 publication Critical patent/EP0054820B1/de
Application granted granted Critical
Publication of EP0054820B2 publication Critical patent/EP0054820B2/de
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)
EP81110210A 1980-12-18 1981-12-07 Vorrichtung zur Aufgabe eines Fluids auf einen sich drehenden Hohlkörper Expired EP0054820B2 (de)

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 EP0054820A1 (de) 1982-06-30
EP0054820B1 EP0054820B1 (de) 1984-11-28
EP0054820B2 true EP0054820B2 (de) 1989-06-28

Family

ID=6119446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110210A Expired EP0054820B2 (de) 1980-12-18 1981-12-07 Vorrichtung zur Aufgabe eines Fluids auf einen sich drehenden Hohlkörper

Country Status (10)

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

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
EP2900383B1 (en) 2012-09-28 2018-04-25 AGCO Corporation Horizontally rotating controlled droplet application
CN105834019B (zh) * 2016-05-24 2018-06-19 湖南农业大学 液力式高压水静电喷头

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
FR1300555A (fr) * 1959-12-08 1962-08-03 Interplanetary Res & Dev Corp Procédé et appareil pour l'application de revêtements par pulvérisation
NL269353A (enrdf_load_stackoverflow) 1959-12-08 1900-01-01
NL295314A (enrdf_load_stackoverflow) * 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
AU517923B2 (en) * 1977-02-07 1981-09-03 Ransburg Japan Ltd. Rotary paint atomizing device
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

Also Published As

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

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