EP0092419A3 - Coating apparatus - Google Patents

Coating apparatus Download PDF

Info

Publication number
EP0092419A3
EP0092419A3 EP83302193A EP83302193A EP0092419A3 EP 0092419 A3 EP0092419 A3 EP 0092419A3 EP 83302193 A EP83302193 A EP 83302193A EP 83302193 A EP83302193 A EP 83302193A EP 0092419 A3 EP0092419 A3 EP 0092419A3
Authority
EP
European Patent Office
Prior art keywords
passage
region
pressurized gas
stream
fed
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Withdrawn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
EP83302193A
Other languages
German (de)
French (fr)
Other versions
EP0092419A2 (en
Inventor
Nigel Paul Saunders
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.)
ELECTROPAINT Ltd
Original Assignee
ELECTROPAINT Ltd
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 ELECTROPAINT Ltd filed Critical ELECTROPAINT Ltd
Publication of EP0092419A2 publication Critical patent/EP0092419A2/en
Publication of EP0092419A3 publication Critical patent/EP0092419A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials

Abstract

Electrostatic or electrogasdynamic coating apparatus includes a coating gun, e.g. for use with dry powder, whose structure defines a through passage leading from an inlet tube (10) operatively connected to a source of particulate coating material to a discharge barrel (12). A central needle cathode electrode (15) is mounted in a constricted region of the passage, its tip being adjacent an annular porous metal anode electrode (25) whose central opening defines part of the passage. A flow of the material is induced along the passage by a first pressurized gas (e.g. air) stream fed from a first supply formation (24) to enter the passage in the region of the electrodes, in which region the particles receive an electric charge from the latter. At the same time a second pressurized gas steam, which is controlled independently of the first stream, is fed from a second supply formation (24) through the porous electrode itself to prevent build-up of particles on the acting portion thereof.
EP83302193A 1982-04-20 1983-04-19 Coating apparatus Withdrawn EP0092419A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08211387A GB2118865B (en) 1982-04-20 1982-04-20 Coating apparatus
GB8211387 1982-04-20

Publications (2)

Publication Number Publication Date
EP0092419A2 EP0092419A2 (en) 1983-10-26
EP0092419A3 true EP0092419A3 (en) 1984-04-25

Family

ID=10529796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83302193A Withdrawn EP0092419A3 (en) 1982-04-20 1983-04-19 Coating apparatus

Country Status (2)

Country Link
EP (1) EP0092419A3 (en)
GB (1) GB2118865B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600603A (en) * 1984-06-21 1986-07-15 Nordson Corporation Powder spray apparatus and powder spray method
FR2620354B2 (en) * 1987-02-12 1990-01-05 Sames Sa DEVICE FOR ELECTROSTATIC PROJECTION OF POWDERED PRODUCT
DD271611A3 (en) * 1987-10-27 1989-09-13 Verkehrswesen Hochschule SPRAY GUN WITH ELECTRIC KINETIC POWDER RECHARGE
GB2277469B (en) * 1993-04-27 1996-07-24 Itw Ltd An electrostatic system
US6444033B1 (en) * 1999-11-12 2002-09-03 Delsys Pharmaceutical Corp. Article comprising a diffuser with flow control features
IT1316768B1 (en) * 2000-02-18 2003-05-12 Ambrogio Pogliani APPARATUS AND PROCEDURE FOR ELECTROSTATIC APPLICATION SYNTHETIC DUST
DE102004043411B3 (en) 2004-09-02 2006-05-04 Weitmann & Konrad Gmbh & Co Kg Apparatus and method for producing a powder-air mixture
DE102004055106A1 (en) * 2004-11-15 2006-05-24 P + S Pulverbeschichtungs- Und Staubfilteranlagen Gmbh Delivery unit for an atomized material such as powder or fluid paints to a workpiece coating device has material air stream lead that widens downstream

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1289467B (en) * 1964-01-06 1969-02-13 Devilbiss Co Device for electrostatic coating of objects
GB1449998A (en) * 1973-06-01 1976-09-15 Energy Innovations Electrogas dynamic production line coating system
GB1498486A (en) * 1974-09-06 1978-01-18 Air Ind Electrostatic spray nozzle for powder products
DE2852038A1 (en) * 1977-12-03 1979-06-07 Nakaya Kogyo Kk LIQUID SPRAY DEVICE, IN PARTICULAR LIQUID SPRAY GUN
US4368852A (en) * 1981-03-23 1983-01-18 Nordson Corporation Combination spray gun and pressure regulator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329348A (en) * 1976-08-30 1978-03-18 Ppg Industries Inc Electrostatic spraying device having gassshraud and electrostatic charging meands
JPS5534159A (en) * 1978-09-01 1980-03-10 Onoda Cement Co Ltd Powder charging device and electrostatic powder depositing device
US4258409A (en) * 1979-03-08 1981-03-24 Estey Dynamics Corporation Electrogasdynamic coating apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1289467B (en) * 1964-01-06 1969-02-13 Devilbiss Co Device for electrostatic coating of objects
GB1449998A (en) * 1973-06-01 1976-09-15 Energy Innovations Electrogas dynamic production line coating system
GB1498486A (en) * 1974-09-06 1978-01-18 Air Ind Electrostatic spray nozzle for powder products
DE2852038A1 (en) * 1977-12-03 1979-06-07 Nakaya Kogyo Kk LIQUID SPRAY DEVICE, IN PARTICULAR LIQUID SPRAY GUN
US4368852A (en) * 1981-03-23 1983-01-18 Nordson Corporation Combination spray gun and pressure regulator

Also Published As

Publication number Publication date
EP0092419A2 (en) 1983-10-26
GB2118865A (en) 1983-11-09
GB2118865B (en) 1985-09-25

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR IT LI LU NL SE

17P Request for examination filed

Effective date: 19840913

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19851031

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SAUNDERS, NIGEL PAUL