EP0914870A1 - Buse de pulvérisation à multiples substances avec orifices concentriques - Google Patents

Buse de pulvérisation à multiples substances avec orifices concentriques Download PDF

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Publication number
EP0914870A1
EP0914870A1 EP98120388A EP98120388A EP0914870A1 EP 0914870 A1 EP0914870 A1 EP 0914870A1 EP 98120388 A EP98120388 A EP 98120388A EP 98120388 A EP98120388 A EP 98120388A EP 0914870 A1 EP0914870 A1 EP 0914870A1
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EP
European Patent Office
Prior art keywords
atomizing nozzle
channels
nozzle according
radially
substance
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Withdrawn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
EP98120388A
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German (de)
English (en)
Inventor
Herbert Hüttlin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0914870A1 publication Critical patent/EP0914870A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/065—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet an inner gas outlet being surrounded by an annular adjacent liquid outlet

Definitions

  • the invention relates to a multi-component atomizing nozzle with at least three concentrically arranged, from one inflow end along a longitudinal axis to each mouth opening extending flow channels, one channel for spraying a liquid on both sides of a channel for guiding one Gases is surrounded.
  • Such an atomizing nozzle is known from DE-PS 857 924.
  • this atomizing nozzle there are annular flow channels provided by several concentrically nested Pipes are formed.
  • the flow channels taper in the area of the mouth opening radially inwards.
  • a flow channel for spraying a liquid is on both sides surrounded by channels for the passage of air.
  • the radial inner air duct still flows into the liquid duct inside the nozzle, so that a mixture of these already in the nozzle takes place in both media.
  • radially inner air duct arranged helically Baffles or vanes are provided to the airflow in addition impose a circular motion for axial movement.
  • the nozzle mentioned at the beginning serves the atomized liquid at high speed in a standing cylindrical Spray dry room.
  • a widely used area of application for a multi-component atomizing nozzle according to the present application in being a particulate good with the one to be sprayed Treat liquid.
  • a treatment process is wise, a particulate one Easy to granulate.
  • the goal is fine fine particles to agglomerate into larger particles.
  • An area of application the pharmaceutical industry is for such granules, with the almost dust-fine particles to more manageable granulate particles should be agglomerated.
  • the sprayed liquid In another area of application, namely coating, the sprayed liquid a superficial coating on the Form coated goods.
  • the outcome of the treatment is crucial depends on how finely distributed the liquid is the nozzle emerges and how evenly distributed the sprayed Liquid can be applied to the material to be treated.
  • the object is achieved in that the channels in the area of its mouth opening from the longitudinal axis to the outside run away.
  • This constructive measure allows a spray cone to be sprayed Liquid particles can be achieved in which the Particles continuously from each other over a relatively long distance move away so there is a danger that already sprayed Liquid particles meet again and become larger Agglomerate liquid particles, is significantly reduced, so that a much more uniform treatment result can be achieved.
  • Fig. 5 in which the mouth opening 72 from the The longitudinal axis of the straight tubular nozzle 64 is directed outwards, and you also look at the spray distance or spray height h1 again a corresponding surface section from above of the spray cone, which is underlined in gray in FIG. 5, it can be seen that there are only 9 particles left, thus the relative density of the particles to each other is lower is.
  • Liquid droplets 74, 74 'and 74' ' can be seen that all the sprayed particles move away from each other have, this also applies to the radially inner sprayed Particles 75, 75 'and 75' 'farther apart are as when they exit from the mouth opening 72.
  • the philosophy of the invention is that the liquid ring gap in its spread parallel to the inside and concentrically to the outside of at least one gas cross section, is surrounded in particular parallel-concentric.
  • Circular channels were shown in the examples, they are oval or elliptical shapes are also possible. Furthermore, only certain circumferential sections of the channels are used, that is certain areas are closed or covered, what's on the principle of the invention has no influence.
  • the channels run in the area of the mouth opening opposite the longitudinal axis angled up to 90 ° outwards.
  • the channels run in the area of the mouth opening opposite the longitudinal axis directed outwards at an angle of at least 15 °.
  • the channels run at an angle in the range of 30 to 60 ° to the outside directed.
  • the channels as spaces between several coaxially pushed together Tubes trained.
  • This measure has the advantage that the flow channels through the chambers can be applied evenly.
  • the chambers are formed by radial expansion of the tubes.
  • This measure has the advantage that the chambers are constructive can be done very easily.
  • the chambers are provided with axially extending connections.
  • This measure has the advantage that overall slim rod-shaped Multi-substance atomizing nozzles result, for example inserted into corresponding cylindrical openings or can be inserted.
  • the chambers are provided with radially extending connections.
  • they are radial extending connections in openings in the chamber walls can be used as a seal and each end in a specific chamber.
  • This measure has the advantage that even with several nested Simply pipe the radial connections through it be accomplished that these through openings in the tubes are passed radially sealing and then in the corresponding Chamber. This measure also leads to an easy Dismantled and therefore easy to clean multi-component nozzle.
  • the plurality radial connections added on a carrier that on the Nozzle body can be placed radially.
  • This measure has the advantage that compact modular designs are possible and thus flexible to different design Refinements can be adapted to the desired to achieve excellent treatment results.
  • the carrier can be clipped onto the nozzle body.
  • This measure has the advantage that the handling of the nozzle, be it when assembling or disassembling for cleaning purposes, is simple.
  • this is radial innermost and / or the radially outermost channel wall with perforations provided through which a passage of pressurized gaseous medium is made possible from this channel.
  • the perforations are provided on the innermost tube, if, for example, a powder is carried out through the innermost tube will be ensured that no attachments either and agglomerations as well as detachments from larger agglomerates can take place.
  • the sum is of the perforation cross sections up to 15% of the total area of the Canal wall.
  • This measure has the advantage that it is particularly cheap Cleaning effect can be achieved.
  • This measure has the advantage that the lateral deflection the longitudinal axis through structurally simple measures, namely by widening the tubes pushed into each other can be, which of course only up to a limited Angle can be executed according to true dimensions.
  • they are in the mouth area outward sections of the channels through appropriately shaped ring bodies formed on, in or can be plugged over the pipes.
  • the ring bodies have radially extending spacers on the relative position determine exactly to an adjacent ring body.
  • the tubes are on Incoming end attachable to a support body.
  • This measure has the advantage that simple assembly and easy disassembly for cleaning or retrofitting purposes is possible, with the corresponding in the carrier body Chambers created in connection with the attached pipes can be.
  • the carrier body Can be upgraded with adapters for nozzles with more than three channels.
  • the basic equipment of a multi-component nozzle is three flow channels, a channel for the liquid and the bilateral of which are arranged channels for the atomizing air. This can thus, for example, through four nested pipes.
  • radially inner and / or radially outer Channels are provided, for example, the aforementioned Microclimate are created on the support body, on which the four base pipes are pushed on, only fittings postpone, in or on which then another if necessary inner or outer tube or both can be slid on to the additional radially inner or radially outer channels create.
  • a multi-substance atomizing nozzle shown in Figures 1 to 3 is provided with the reference number 10 in its entirety.
  • the nozzle 10 has a carrier body 12 on which four tubes 14, 16, 18 and 20 are placed coaxially.
  • the innermost, smallest diameter tube 14 is in a central, continuous bore in the Carrier body 12 inserted appropriately.
  • the tube 14 defines an inner central channel 22.
  • a larger-diameter pipe 16 is pushed over the pipe 14, attached to an inner ring flange of the support body 12 is.
  • the diameter-largest tube 20 lies over the entire outside of the Covering body 12 on this.
  • a second annular one Channel 26 created, which opens into an opening 27.
  • a third ring Channel 28 created, which opens into an opening 29.
  • first connecting piece 30 To supply channels 24 and 28 with spray air SL is a radially attached first connecting piece 30 is provided.
  • the connecting piece 30 is through an opening 32 in the outermost Pipe 20 is inserted in a sealing manner and opens into an annular chamber 34.
  • the annular chamber 34 is on the outside of the carrier body 12 recessed and is via openings 13 with the first channel 24 fluidically connected.
  • Spray air SL supplied via the first connection piece 30, distributed this, as indicated by flow arrows 31 is even on the two channels 24 and 28.
  • a second radial, parallel and at a distance from the first connection piece 30 arranged second connecting piece 36 is sufficient through an opening 38 in the outermost tube 20 and an opening 40 in the tube 18 underneath and ends in one second annular chamber 42, which is also on the outside of the carrier body 12 is left out.
  • the annular chamber 42 is connected to the second channel 26.
  • Both connecting pieces 30 and 36 are held by a holder 44 which has side end flaps 45 which on lugs 46 the outside of the outer tube 20 can be clipped on, like that can be seen in particular from FIGS. 2 and 3.
  • the connecting pieces 30 and 36 are not specified here conical seals sealing and fitting in the openings 32 or 38 and 40 added in the corresponding tubes.
  • the End tabs 45 are clipped on or off from the nose, so that then the holder 44 together with the connecting piece 30 and 36 can be removed.
  • the annular mouth opening 27 from which the spray liquid SF emerges, is radially inward from the annular mouth opening 25, radially outside of the annular mouth opening 27 surrounded by the openings 25 and 27th the spray air SL escapes.
  • channels 24, 26 are and 28 in the region of their mouth openings 25, 27, 29 from the Longitudinal axis 56 of the nozzle 10 directed outwards, in the illustrated Embodiment by the angle ⁇ of about 22.5 °.
  • the opening of the central channel 22 is through a Sealing plug 58 is closed by a rod 60 with a control knob 62 is connected at the inflow end.
  • the plug 58 can be removed and it can, for example, through the central channel 22 a solid or also process air of a circulation system of an apparatus, in of which the nozzle 10 is installed.
  • the nozzle 10 is easy to assemble and can be cleaned or Conversion purposes can be easily dismantled.
  • a nozzle 8 shown in Figures 6 and 7 is based on the nozzle 10 described above and represents a further upgrade stage the nozzle 10.
  • a fitting piece 82 is attached to the rear end of the carrier body 12, namely in the depression in which the adjusting button 62 of Fig. 1 intervened. Via the outermost tube 20 of the previously assembly described is yet another tube 84th pushed, which engages over the fitting 82 and attached to this is.
  • connection piece 88 Via an opening 86 in the tube 84 in the area of the fitting 82 is a third radially extending connection piece 88 scheduled.
  • This third connecting piece 88 opens into an annular chamber 90, which is recessed on the outside of the fitting 82, and stands with the fourth channel 92 between the tube 20 and the Pipe 84 in connection.
  • the innermost ring 48 which is inserted into the innermost tube 14 is, is now designed so that between the inside of the Ring 48 and the outside of the plug 58 another Mouth opening 95 arises through which a partial flow of Microclimates can leak. The other partial flow passes through the mouth opening 93.
  • the one exiting via the channel 26 is Spray liquid radially inside and radially outside of spray air surrounded, this in turn is radially inside and radially outside microclimate emerging through the orifices 93 and 95 surround.
  • connection piece 30 and 36 through the outermost tube 84th Corresponding openings 94 and 96 can be guided intended.
  • a holder 98 carries all three connecting pieces 30, 36 and 88.
  • Fig. 7 shows the flexibility of the modular system can be seen particularly well.
  • the outermost tube 84 can be provided or be omitted, accordingly, only then corresponding ring 102 may be provided or omitted.
  • tubes can be designed in the same way 14, 16, 18, 20 rings with different widenings used so that channels result, which are more or less far out from the central central longitudinal axis run away.
  • the rings 48, 50, 52, 54 and 102 are high-quality turned parts Precision can be made from metal or composite materials.
  • a fitting 82 is placed on the carrier body 12.
  • Another adapter 112 is placed on adapter 82.
  • In the innermost tube 14 is an even smaller diameter Tube 114 inserted that up to the further fitting 112 is sufficient and is mounted on the inside.
  • the fifth channel 116 is via the third connecting piece 88 microclimate, i.e. that of this connector 88 air supplied is partly in the outermost fourth Channel 92 and partly through the opening 100 of the fitting 82 passed into the innermost fifth channel 116, like that through Flow arrows 115 is indicated.
  • the Sealing plug 122 is somewhat smaller, thus leaving one relatively large annular mouth opening 125 through which in the middle, for example, process air PL or a mixture of process air and a finely divided solid F (PL + F) passed through can be.
  • Fig. 8 From the sectional view of Fig. 8 can also be seen that the innermost tube 116 is provided with perforations 118, so that from the fifth channel 116 microclimate medium through the perforations 118 can flow into the interior, like that through Arrows 119 is shown.
  • a Solid F passed through the innermost tube 114 exists the danger of solid deposits on the inside of this tube 114.
  • the perforations of the tube 114 result a constantly renewing film of air on the inner surface, who protects them and keeps them free from buildup.
  • Microclimate medium can also be formed via the perforations 120 exit the fourth channel 92 to the outside, like that is indicated by flow arrows 121.
  • the perforations 120 have a cleaning effect on the Achieved outside of the nozzle.
  • the nozzle 110 shown in FIG. 8 is used, for example, as an underbed nozzle inserted into a vortex chamber, so is its outside of the one swirled and treated in the vortex chamber Well and the process air flows around it, and it exists the possibility of particles on the outside of the outermost Tube 84 stick, especially in agglomeration processes, where a sticky spray liquid is sprayed.
  • the perforations 120 now achieve a self-cleaning effect, i.e. no particles can also adhere to the outside.
  • FIG. 9 is a greatly enlarged sectional view of the Mouth opening area of the nozzle 110 shown in FIG. 8 evident. It can be seen that through the mouth opening 27 Spray air SF emerges.
  • the annular mouth opening 27 is through on both sides, i.e. radially inside and radially outside surround the annular mouth openings 25 and 29 through which the spray air SL emerges, which has the task of the spray liquid Spray SF into fine aerosol droplets.
  • the annular mouth openings 25 and 29 are radially inside and radially outward through the annular orifices 117 and 93, through which the so-called microclimate MK emerges, mostly a conditioning gas stream that flows on both sides of the Spray mist surrounds and conditions this, for example Maintain temperature or the like.
  • Fig. 9 From the sectional view of Fig. 9 can also be seen that as precise turning parts trained rings 48, 50, 52, 54, 102 and 124 again respectively on the ends of tubes 14, 16, 18, 20, 84 and 114 are plugged in or inserted or inserted into these and that in the rib-like spacers not described here for exact positioning of the rings with each other is taken care of. This means that there are precisely defined muzzle opening conditions available through which the various media SF, SL, MK, PL + F under exactly manageable conditions can be sprayed through the nozzle.
  • an end portion 130 of a nozzle is shown, which corresponds to the expansion stage of the nozzle of Fig. 1.
  • the connector 140 supplies one between the tubes 134 and 136 formed channel 146 with spray liquid SF.
  • Port 142 supplies both inner channel 144 between the tubes 132 and 134 as well as the outer channel 148 between pipes 136 and 138 with spray air SL, so that as related described with Fig. 1, the annular mouth exit opening 27 of the spray liquid both radially inside also radially outside with corresponding mouth openings 25 and 29 the spray air is surrounded.
  • FIGS. 10 and 11 are one of FIGS. 10 and 11 corresponding Construction for an expansion stage of a nozzle shown as it is described in Fig. 8, that is, a nozzle in the total six tubes are pushed together.
  • outer channel 160 which between the outermost tube 154 and the radially closest inner tube 138.
  • radial or axial connections for the flow channels may be provided.

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EP98120388A 1997-11-06 1998-10-28 Buse de pulvérisation à multiples substances avec orifices concentriques Withdrawn EP0914870A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19749071 1997-11-06
DE1997149071 DE19749071A1 (de) 1997-11-06 1997-11-06 Mehrstoffzerstäubungsdüse

Publications (1)

Publication Number Publication Date
EP0914870A1 true EP0914870A1 (fr) 1999-05-12

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EP98120388A Withdrawn EP0914870A1 (fr) 1997-11-06 1998-10-28 Buse de pulvérisation à multiples substances avec orifices concentriques

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EP (1) EP0914870A1 (fr)
DE (1) DE19749071A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011128433A1 (fr) * 2010-04-16 2011-10-20 Dieter Wurz Buse multiple à mélange externe
CN105750111A (zh) * 2016-05-12 2016-07-13 李依真 流体雾化喷嘴及具有该喷嘴的密度测定装置和干燥装置
DE102021128338A1 (de) 2021-10-29 2023-05-04 Romaco Innojet Gmbh Zerstäubungsdüse

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10232863A1 (de) * 2002-07-16 2004-02-05 Hüttlin, Herbert, Dr.h.c. Zerstäubungsdüse mit rotativem Ringspalt
DE102007055936B4 (de) * 2007-12-30 2013-06-27 Georg-August-Universität Göttingen Stiftung Öffentlichen Rechts Aerosolerzeugerdüse, Aerosolerzeugersystem, Beschichtungssystem und Verfahren

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE702485C (de) * 1938-03-06 1941-02-08 Krautzberger & Co G M B H A Verfahren zum Spritzen von fluessigen bzw. Aufstaeuben von staubfoermigen Stoffen mittels Druckluft oder anderer gasfoermiger Druckmittel
US3770207A (en) * 1971-04-29 1973-11-06 Knapsack Ag Spray nozzle for a spray dryer
US4073436A (en) * 1975-04-22 1978-02-14 Hans Behr Mixing and/or dispersing and spraying arrangement
US4171777A (en) * 1977-02-11 1979-10-23 Hans Behr Round or annular jet nozzle for producing and discharging a mist or aerosol
US4360497A (en) * 1981-04-24 1982-11-23 Phillips Petroleum Company Feedstock nozzle and use in carbon black reactor
WO1983002736A1 (fr) * 1982-02-09 1983-08-18 Walsh, William, A., Jr. Atomisation variable de gaz
EP0108153A1 (fr) * 1982-04-28 1984-05-16 Tokyo Road Engineering Co., Ltd. Procede et dispositif d'injection d'eau a pression elevee pour des operations de nettoyage routier
EP0458685A1 (fr) * 1990-05-23 1991-11-27 Total Raffinage Distribution S.A. Procédé et dispositif de pulvérisation de liquide, ainsi que leurs applications

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1280104B (de) * 1963-09-05 1968-10-10 Firestone Produkte A G Fab F Radialspritzduese zum Zerstaeuben und Mischen eines Pulvers und einer Fluessigkeit
US3680781A (en) * 1970-12-30 1972-08-01 Fuller Co Liquid spray nozzle
GB1544697A (en) * 1976-10-08 1979-04-25 Coal Ind Spray head
SE8202066L (sv) * 1982-03-31 1983-10-01 Boliden Ab Atomiseringsforfarande och -anordning
US5169070A (en) * 1991-06-20 1992-12-08 Mattson Spray Equipment Company, Inc. Air directing ring for fluid spray gun air cap

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE702485C (de) * 1938-03-06 1941-02-08 Krautzberger & Co G M B H A Verfahren zum Spritzen von fluessigen bzw. Aufstaeuben von staubfoermigen Stoffen mittels Druckluft oder anderer gasfoermiger Druckmittel
US3770207A (en) * 1971-04-29 1973-11-06 Knapsack Ag Spray nozzle for a spray dryer
US4073436A (en) * 1975-04-22 1978-02-14 Hans Behr Mixing and/or dispersing and spraying arrangement
US4171777A (en) * 1977-02-11 1979-10-23 Hans Behr Round or annular jet nozzle for producing and discharging a mist or aerosol
US4360497A (en) * 1981-04-24 1982-11-23 Phillips Petroleum Company Feedstock nozzle and use in carbon black reactor
WO1983002736A1 (fr) * 1982-02-09 1983-08-18 Walsh, William, A., Jr. Atomisation variable de gaz
EP0108153A1 (fr) * 1982-04-28 1984-05-16 Tokyo Road Engineering Co., Ltd. Procede et dispositif d'injection d'eau a pression elevee pour des operations de nettoyage routier
EP0458685A1 (fr) * 1990-05-23 1991-11-27 Total Raffinage Distribution S.A. Procédé et dispositif de pulvérisation de liquide, ainsi que leurs applications

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011128433A1 (fr) * 2010-04-16 2011-10-20 Dieter Wurz Buse multiple à mélange externe
CN102858466A (zh) * 2010-04-16 2013-01-02 迪特尔·沃尔兹 外部混合的多组分喷管
CN105750111A (zh) * 2016-05-12 2016-07-13 李依真 流体雾化喷嘴及具有该喷嘴的密度测定装置和干燥装置
CN105750111B (zh) * 2016-05-12 2017-05-10 李依真 一种喷雾干燥装置
DE102021128338A1 (de) 2021-10-29 2023-05-04 Romaco Innojet Gmbh Zerstäubungsdüse

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