US3870232A - Nozzle for projecting powdered solid products - Google Patents

Nozzle for projecting powdered solid products Download PDF

Info

Publication number
US3870232A
US3870232A US35530673A US3870232A US 3870232 A US3870232 A US 3870232A US 35530673 A US35530673 A US 35530673A US 3870232 A US3870232 A US 3870232A
Authority
US
United States
Prior art keywords
nozzle
spray
particles
separate
jet
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 - Lifetime
Application number
Other languages
English (en)
Inventor
Adrien Lacchia
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.)
Air Industrie SA
Original Assignee
Air Industrie SA
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
Priority claimed from FR7219635A external-priority patent/FR2185938A5/fr
Priority claimed from FR7304028A external-priority patent/FR2216775A6/fr
Application filed by Air Industrie SA filed Critical Air Industrie SA
Application granted granted Critical
Publication of US3870232A publication Critical patent/US3870232A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • B05B7/14—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 designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/1486—Spray pistols or apparatus for discharging particulate material for spraying particulate material in dry state
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87587—Combining by aspiration
    • Y10T137/87603—Plural motivating fluid jets

Definitions

  • ABSTRACT The invention relates to a nozzle for projecting powdered solid products intended for coating-objects, of the kind comprising a device for shaping the incident mixture consisting of said powdered solid and its conveyor gas, into an outlet jet of substantially flat form, said nozzle essentially comprising a plurality of separate pipes passing at least partly through the nozzle in the direction of emission of the jet, and intended to be completely traversed by a specific portion of said jet, each of said separate pipes being provided with a suction device for said incident mixture, said suction devices being of the Venturi type, each comprising at least one conduit for injecting a flow of auxiliary gas into said pipes.
  • the present invention relates to a projection nozzle for powdered products which can be used in all projection apparatus, electrostatic or other, for powdered solid products such as PVC, polyethylene, epoxy resin, polyamides, enamel, talcum powder, etc., these powdered solid products being intended for coating objects.
  • the invention is concerned with a projection nozzle for powder products of the type specified above, in which the jet of powder mixed with its conveyor gas is discharged from the nozzle in the form of a flat jet shaped like a fan.
  • the invention is also concerned with an electrostatic projection nozzle of this kind.
  • the known devices of this kind comprise a flat fan-shaped nozzle in which the jet of powder, mixed with its conveyor gas, is projected in a thin uniform layer. Nozzles of this kind are not however entirely satisfactory in operation.
  • the flat fan-shaped jet obtained is surrounded on both sides by a cloud of powder particles due to the turbulence created by the expansion to free air of the jet of gas passing out of the nozzle.
  • the charged particles of powder having penetrated into these cavities or recesses then become fixed on the wall by virtue of the attraction due to the electrical image forces and to inter-molecular forces.
  • a nozzle with a round jet could obviously be employed, but its use would however be difficult in the case where the surface to be coated is fairly large and where only a short time is available in order to ensure its coating, which is the case in the field of industrial powdering.
  • a flat jet gives more rapid and furthermore more uniform powdering of the cavities and especially of those of elongated shape.
  • flat jet nozzles are utilized in such manner that the jet is vertical in its largest dimension, and does not give a uniform distribution of powder in the jet.
  • the density of powder per cubic centimetre is much greater in the lower part of the fan formed by the jet than in its upper part.
  • the coating of the object is also irregular, which is particularly undesirable.
  • the jet in the shape of a fan is incurvcd to-- wards the bottom, so that the use of the nozzle becomes difficult.
  • Another known powdering nozzle device with a flat jet consists of a hemispherical nozzle, at the downstream extremity of which is provided a horizontal slot cutting the hemisphere and passing thereinto in the shape of a fan.
  • This device has a number of disadvantages.
  • the said slot has been given a small dimension with respect to the radius of the hemisphere, in order to obtain a sufficiently fine jet having an outlet angle which is not too large in order to ensure the coating of objects of all shapes.
  • the flow-rate is limited.
  • the device according to the invention makes it possible to overcome these drawbacks.
  • the flow-rate of powder can be made variable over a very wide range, the cloud surrounding the jet in nozzles known at the present time being eliminated; the distribution of powder in the jet is well defined, and it is possible to construct nozzles according to the invention in such manner that the jet has any desired width, either very large or very small.
  • the device is characterized in that the projection nozzle is constructed in such manner that its front portion comprises a number of separate openings, each of these openings forming the larger base of a tube in the shape of a truncated cone, each of these tubes terminating towards the rear portion of the nozzle in a separate powder injection suction device of the Venturi type, by means of which a definite portion of the mixture of powder and conveyor gas is tapped off by individual suction and is injected into the said pipe.
  • the said circular openings are preferably placed in alignment in order that the jets discharged from each of these openings at a correct angle become mixed so as to form a flat jet.
  • FIGS. la and 1b are perspective views of an electrostatic projection nozzle for powder products in accordance with the invention.
  • FIG. 2 is a front view of the said nozzle
  • FIG. 3 is a longitudinal section of a view looking on the side of the said nozzle
  • FIG. 4 is a longitudinal section ofa view looking from above on the said nozzle
  • FIGS. 5a and 5b are perspective views of a second electrostatic projection nozzle for products in powdered form, according to the invention.
  • FIG. 6 is a front view of the said nozzle
  • FIG. 7 is a longitudinal section of a view looking on the side of the said nozzle
  • FIG. 8 is a view in cross-section projected at the level of the charge electrodes of the said nozzle.
  • the electrostatic powdering nozzle shown diagrammatically in FIGS. 1 to 4 comprises a nozzle body 1 constituted by an electrically-insulated material such for example as that sold commercially under the trademark DELRIN or TEFLON, and screwed on the extremity 2 of an electrostatic powdering apparatus, such as a manual or automatic powdering gun described in U.S. Pat. Nos.
  • the electrodes 4 and 5 are each constituted for example by a length of piano wire of 0.4 mm. in diameter, the whole of the length except for the front portion being embedded in an insulating material such as Araldite.
  • the front face of each nozzle is provided, according to the invention, with a number of separate orifices 7, 8, 9, 10, 11 and 12, through which the powder is ejected in the direction of the object to be coated.
  • the electrode 4 ensures the charging of the powder particles discharged from the orifices 7, 8 and 9, while the electrode 5 ensures the charge of the powder particles proceeding from the orifices 10, I1 and 12.
  • Each of the orifices 7, 8, 9, 10, 11 and 12 forms the termination of separate tubes 13,14, 15, 16,17 and 18 which are preferably of frusto-conical section flaring outwards towards the front portion of the nozzle.
  • the mixture of the powder and it conveyor gas is distributed over each of the pipes l3, 14, 15, 16, I7 and 18.
  • this distribution is controlled in intensity by individual suction devices constituted, for each ofthe pipes 13 to 18, by one or a plurality of inlets I9, 20 of auxiliary gas under pressure, terminating in an oblique manner towards the front in the corresponding tube, so as to create a suction in the said tube by a system of the Venturi type.
  • the auxiliary inlets l9 and 20 are connected to an auxiliary gas inlet such as the inlet which is normally intended, in the STAJET and MEGASTAJET spraying guns for the injection of turbulent secondary air.
  • the STAJET or MEGASTAJET gun it is in practice only necessary to remove the vortex nozzle with which it is normally fitted, and then to screw on instead of this latter the nozzle according to the invention.
  • the quantity of powder sucked-in by a given pipe is a function of the diameter of the orifice of the pipe and also of the diameter of the auxiliary inlets l9 and 20.
  • the orifices 7 to 12 may be set back from the mouth 6, which latter is then constituted by a uniform slot which ensures a better mixture of the separate jets in order to form the flat jet.
  • the axes of the pipes 13 to 18 are so arranged that they form as a whole a fan opening out towards the front of the nozzle, the angle existing between the axes of the end pipes 13 and 18 determining in practice the outlet angle of the jet of powder.
  • FIGS. 5 to 8 show diagrammatically an electrostatic projection nozzle for powder products according to the invention, similar to that shown diagrammatically in FIGS. 1 to 4 and described above, but of an improved type.
  • the electrostatic projection nozzle for powder products previously described comprises at least one charge electrode located outside the jet and level with the front mouth of the nozzle. Electrodes of this type are each constituted, as has been seen, by a glow-discharge point of small radius. It has unfortunately been found that, due to the glow-discharge produced by such a point, the latter was brought up to a temperature sufficient to melt the particles which become accidentally deposited on it.
  • the nozzle in accordance with FIGS. 5 to 8, makes it possible, in the case of an electrostatic projection nozzle for powder products according to the invention, to prevent the points utilized as charge electrodes from being covered with powder, without requiring any additional supply of secondary air.
  • auxiliary gas intended for the various suction devices of the Venturi type in the different pipes provided on a nozzle according to the invention, to create, in a manner known per se, a jet of auxiliary gas around needles constituting the charge electrodes, thereby preventing these needles from becoming covered with powder tending to melt on them and in consequence to form an insulating shell.
  • the electrostatic powdering nozzle shown diagrammatically in the said FIGS. 5 to 8, thus comprises, in the same way as the nozzle previously described and shown diagrammatically in FIGS. 1 to 4, a nozzle body 21 made of an electrically-insulating material such as DELRIN of TEFLON and fixed on the extremity 22 of an electrostatic powdering device, such as a manual or automatic spraying gun sold by the Applicants under the respective Trade-Marks STAJET or MEGASTA- JET, together with a rear inlet ring 23 made of an electrically-conducted and preferably resistive material, forming the inlet orifice for the mixture of powder and its conveyor gas, and which is brought up to the high-tension voltage.
  • a nozzle body 21 made of an electrically-insulating material such as DELRIN of TEFLON and fixed on the extremity 22 of an electrostatic powdering device, such as a manual or automatic spraying gun sold by the Applicants under the respective Trade-Marks STAJET or MEGASTA- JET, together with a
  • Two electrodes 24 and 25 constituted by points of small radius are electrically connected to the ring 23 and extend towards the front up to the level of the mouth 26 of the nozzle.
  • the electrodes 24 and 25 are for example constituted, as previously, each by a length of piano wire of 0.4 mm. in diameter, the whole of which with the exception of the front portion is embedded in an insulating material.
  • each of these points 24 and 25 is surrounded by a sheath of air coming from the supply of secondary air provided, as previously, in order to create a suction device of the Venturi type in each of the separate frusto-conical pipes forming the interior of the nozzle.
  • the body 21 of the nozzle has been pierced with three channels, 28, 29 and 210.
  • the channel 210 is intended to surround the corresponding charge electrode 24 or 25, the channel 29 and the channel 28 are intended to provide a communication between the channel 210 and the supply of secondary air to the projection gun.
  • a plug 211 prevents communication between the channel 29 and the exterior.
  • the powdering nozzles according to the invention may be utilized on all apparatus intended for the coating of objects by projection of powdered solid products. They find a particularly advantageous industrial application in the field of electrostatic powdering for coating objects.
  • a nozzle body defining a plurality of separate ducts passing through said body in the direction of said spray, each separate duct having an inlet and a spray outlet and adapted to be completely traversed by a portion of said particles, said plurality of ducts being positioned to form beyond said outlets a spray in'which said particles are uniformly distributed, and
  • each suction device comprising a constriction at the inlet of the separate duct with which it is associated and at least one injection conduit positioned for discharging auxiliary gas received from sid secondary air supply means into said associated duct downstream of said constriction.
  • each of said separate ducts has the shape of a truncated cone flared toward the outlet end of said duct.
  • a nozzle as claimed in claim 2 in which the apex angle of said truncated cone lies between 0 and 14 degrees.
  • a nozzle as claimed in claim 1 in which the axes of said separate ducts lie in a single plane.
  • a nozzle as claimed in claim 1 which comprises at least one charge electrode positioned to impart an electrical charge to said particles but located outside the region occupied by said spray and level with the outlet of said nozzle.
  • each charge electrode defines a point of small radius and is housed in a hollow tube positioned to be connected to said secondary air supply means.
  • a nozzle as claimed in claim 7 in which said hollow tube is connected to said secondary air supply means through a duct in the body of said nozzle.

Landscapes

  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
US35530673 1972-05-26 1973-04-30 Nozzle for projecting powdered solid products Expired - Lifetime US3870232A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7219635A FR2185938A5 (enrdf_load_stackoverflow) 1972-05-26 1972-05-26
FR7304028A FR2216775A6 (enrdf_load_stackoverflow) 1973-02-01 1973-02-01

Publications (1)

Publication Number Publication Date
US3870232A true US3870232A (en) 1975-03-11

Family

ID=26217127

Family Applications (1)

Application Number Title Priority Date Filing Date
US35530673 Expired - Lifetime US3870232A (en) 1972-05-26 1973-04-30 Nozzle for projecting powdered solid products

Country Status (6)

Country Link
US (1) US3870232A (enrdf_load_stackoverflow)
JP (1) JPS529219B2 (enrdf_load_stackoverflow)
CH (1) CH570207A5 (enrdf_load_stackoverflow)
DE (1) DE2325989A1 (enrdf_load_stackoverflow)
GB (1) GB1413394A (enrdf_load_stackoverflow)
IT (1) IT984188B (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991942A (en) * 1974-01-17 1976-11-16 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Long-range nozzle
US4109861A (en) * 1976-09-16 1978-08-29 Solar Suede Corporation Electrostatic flocking system
US4715535A (en) * 1986-04-28 1987-12-29 Nordson Corporation Powder spray gun
US4886215A (en) * 1985-10-18 1989-12-12 Nordson Corporation Hand operated powder spray pistol
US4955960A (en) * 1987-03-23 1990-09-11 Behr Industrieanlagen Gmbh & Co. Apparatus for coating workpieces electrostatically
US5106590A (en) * 1990-05-11 1992-04-21 Davy Mckee (London) Limited Gas mixer and distributor with heat exchange between incoming gases
EP0857515A2 (en) 1997-02-05 1998-08-12 Illinois Tool Works Inc. Exhausting turbine air from powder coating apparatus
US5853126A (en) * 1997-02-05 1998-12-29 Illinois Tool Works, Inc. Quick disconnect for powder coating apparatus
US5947390A (en) * 1997-12-30 1999-09-07 Smith; Gary L Reduced emissions flow control plate
US6012657A (en) * 1997-10-03 2000-01-11 Nordson Corporation Powder spray head for fan-like patterns
US6328224B1 (en) 1997-02-05 2001-12-11 Illinois Tool Works Inc. Replaceable liner for powder coating apparatus
US20050173555A1 (en) * 2002-06-07 2005-08-11 Kyowa Hakko Kogyo Co. Ltd Powder density-measuring device and automatic powder spray amount control system using the same
EP2343148A1 (en) * 2010-01-12 2011-07-13 Rolls-Royce PLC Spray nozzle
EP2514554A1 (en) * 2011-04-20 2012-10-24 Rolls-Royce plc Heat source for material processing with a laser source and an optical element for laser beam intensity distribution
US20140284406A1 (en) * 2013-03-21 2014-09-25 Bruker Daltonik Gmbh Multi-nozzle chip for electrospray ionization in mass spectrometers
US10086386B2 (en) 2016-02-09 2018-10-02 Honda Motor Co., Ltd. Coating nozzle and coating device
US20180369878A1 (en) * 2017-06-26 2018-12-27 Citic Dicastal Co., Ltd Automatic powder cleaning system for mixed-line hub bolt holes and combined powder cleaning gun
US12403490B1 (en) * 2023-11-10 2025-09-02 Ivan Pejovic Powder coating nozzle

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5275796A (en) * 1975-12-17 1977-06-25 Mitsui Eng & Shipbuild Co Ltd Method of positioning ship body blocks
JPS57940Y2 (enrdf_load_stackoverflow) * 1976-09-01 1982-01-07
JPS5471841A (en) * 1977-11-18 1979-06-08 Matsushita Electric Ind Co Ltd Air conditioner
JPS54124310U (enrdf_load_stackoverflow) * 1978-02-21 1979-08-30
JPS60102965A (ja) * 1983-11-08 1985-06-07 Yoshihisa Jin 粉体塗料による静電塗装方法及び粉体塗料噴射ノズル
DE3417700C2 (de) * 1984-05-12 1987-02-19 Ransburg-Gema AG, St. Gallen Vorrichtung zum Sprühbeschichten von Gegenständen mit Pulver
GB2158748A (en) * 1984-05-17 1985-11-20 John Link Abrasive blasting nozzle
DE3608426C3 (de) * 1986-03-13 1994-11-24 Gema Volstatic Ag Elektrostatische Sprüheinrichtung für Beschichtungspulver
JPH0414624U (enrdf_load_stackoverflow) * 1990-05-29 1992-02-05
GB2328166A (en) * 1997-08-14 1999-02-17 Ernest Joscelyn Clerk Irrigation nozzle
JP5885953B2 (ja) * 2011-07-25 2016-03-16 株式会社カワタ 粉体分散装置および方法
CN104802767A (zh) * 2015-04-15 2015-07-29 四川和鼎环保工程有限责任公司 悬吊臂式线喷射洗车系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US777680A (en) * 1904-08-22 1904-12-20 Valdemar F Laessoe Oil-burner.
US3677470A (en) * 1970-06-01 1972-07-18 Ransburg Electro Coating Corp Nozzle holder
US3746253A (en) * 1970-09-21 1973-07-17 Walberg & Co A Coating system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US777680A (en) * 1904-08-22 1904-12-20 Valdemar F Laessoe Oil-burner.
US3677470A (en) * 1970-06-01 1972-07-18 Ransburg Electro Coating Corp Nozzle holder
US3746253A (en) * 1970-09-21 1973-07-17 Walberg & Co A Coating system

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991942A (en) * 1974-01-17 1976-11-16 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Long-range nozzle
US4109861A (en) * 1976-09-16 1978-08-29 Solar Suede Corporation Electrostatic flocking system
US4886215A (en) * 1985-10-18 1989-12-12 Nordson Corporation Hand operated powder spray pistol
US4715535A (en) * 1986-04-28 1987-12-29 Nordson Corporation Powder spray gun
US4955960A (en) * 1987-03-23 1990-09-11 Behr Industrieanlagen Gmbh & Co. Apparatus for coating workpieces electrostatically
US5106590A (en) * 1990-05-11 1992-04-21 Davy Mckee (London) Limited Gas mixer and distributor with heat exchange between incoming gases
US6328224B1 (en) 1997-02-05 2001-12-11 Illinois Tool Works Inc. Replaceable liner for powder coating apparatus
EP0857515A2 (en) 1997-02-05 1998-08-12 Illinois Tool Works Inc. Exhausting turbine air from powder coating apparatus
US5853126A (en) * 1997-02-05 1998-12-29 Illinois Tool Works, Inc. Quick disconnect for powder coating apparatus
US6012657A (en) * 1997-10-03 2000-01-11 Nordson Corporation Powder spray head for fan-like patterns
US5947390A (en) * 1997-12-30 1999-09-07 Smith; Gary L Reduced emissions flow control plate
US20050173555A1 (en) * 2002-06-07 2005-08-11 Kyowa Hakko Kogyo Co. Ltd Powder density-measuring device and automatic powder spray amount control system using the same
US9120123B2 (en) * 2010-01-12 2015-09-01 Rolls-Royce Plc Spray nozzle
EP2343148A1 (en) * 2010-01-12 2011-07-13 Rolls-Royce PLC Spray nozzle
US20110168092A1 (en) * 2010-01-12 2011-07-14 Rolls-Royce Plc Spray nozzle
GB2476835B (en) * 2010-01-12 2012-02-01 Rolls Royce Plc Spray nozzle
EP2514554A1 (en) * 2011-04-20 2012-10-24 Rolls-Royce plc Heat source for material processing with a laser source and an optical element for laser beam intensity distribution
US20140284406A1 (en) * 2013-03-21 2014-09-25 Bruker Daltonik Gmbh Multi-nozzle chip for electrospray ionization in mass spectrometers
US9242258B2 (en) * 2013-03-21 2016-01-26 Bruker Daltonik Gmbh Multi-nozzle chip for electrospray ionization in mass spectrometers
US10086386B2 (en) 2016-02-09 2018-10-02 Honda Motor Co., Ltd. Coating nozzle and coating device
US20180369878A1 (en) * 2017-06-26 2018-12-27 Citic Dicastal Co., Ltd Automatic powder cleaning system for mixed-line hub bolt holes and combined powder cleaning gun
US10639681B2 (en) * 2017-06-26 2020-05-05 Citic Dicastal Co., Ltd. Automatic powder cleaning system for mixed-line hub bolt holes and combined powder cleaning gun
US12403490B1 (en) * 2023-11-10 2025-09-02 Ivan Pejovic Powder coating nozzle

Also Published As

Publication number Publication date
JPS4942742A (enrdf_load_stackoverflow) 1974-04-22
GB1413394A (en) 1975-11-12
IT984188B (it) 1974-11-20
CH570207A5 (enrdf_load_stackoverflow) 1975-12-15
JPS529219B2 (enrdf_load_stackoverflow) 1977-03-15
DE2325989A1 (de) 1974-01-24

Similar Documents

Publication Publication Date Title
US3870232A (en) Nozzle for projecting powdered solid products
US3248606A (en) Apparatus for dispersing and electrically charging substances in discrete particulate form
EP1171243B1 (en) High mass transfer electrosprayer
US3676638A (en) Plasma spray device and method
CA1125334A (en) Method and apparatus for atomizing, especially for powdered coating-material
US4802625A (en) Electrostatic spray coating device for coating with powder
GB1518547A (en) Coating apparatus
JPH0510144B2 (enrdf_load_stackoverflow)
WO1995004604A1 (en) Induction spray charging apparatus
EP0237207A1 (en) Gun head for powder painting
CH645040A5 (it) Spruzzatore per sostanze in polvere a carica elettrostatica.
US4715535A (en) Powder spray gun
JP3866295B2 (ja) 粉体噴霧装置
JPS62210066A (ja) 粉体荷電装置および静電粉体塗着装置
US5686149A (en) Spray device and method for powder coating material
ITMI20001023A1 (it) Dispositivo per verniciatura elettrostatica, a geometria con profilo venturi planare per emissione lineare e a densita' uniforme di polvere,
US3351285A (en) Spraying apparatus having improved spray controlling means
JPH02503648A (ja) 導電性被覆液用吹付け被覆装置
GB1587952A (en) Electrostatic spraying device
US3476319A (en) Electrostatic powder-coating apparatus
EP0230723B1 (en) Powder charging apparatus and electrostatic powder coating apparatus
KR800001711Y1 (ko) 분사패턴의 조정이 가능한 분체도장용 분사노즐
RU18654U1 (ru) Распылительная головка электродугового металлизатора
RU2228799C2 (ru) Устройство для электродуговой металлизации
EP4547409A1 (en) Applicator for electrostatic deposition coating of continuous moving web