EP1280610B1 - Buse melangeuse externe - Google Patents

Buse melangeuse externe Download PDF

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Publication number
EP1280610B1
EP1280610B1 EP02719976A EP02719976A EP1280610B1 EP 1280610 B1 EP1280610 B1 EP 1280610B1 EP 02719976 A EP02719976 A EP 02719976A EP 02719976 A EP02719976 A EP 02719976A EP 1280610 B1 EP1280610 B1 EP 1280610B1
Authority
EP
European Patent Office
Prior art keywords
surface portion
flat
nozzle
jet cap
axis
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
EP02719976A
Other languages
German (de)
English (en)
Other versions
EP1280610A1 (fr
Inventor
Stefan Gerstner
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.)
DUESEN-SCHLICK GmbH
DUESEN SCHLICK GmbH
Duesen-Schlick GmbH
Original Assignee
DUESEN-SCHLICK GmbH
DUESEN SCHLICK GmbH
Duesen-Schlick GmbH
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 DUESEN-SCHLICK GmbH, DUESEN SCHLICK GmbH, Duesen-Schlick GmbH filed Critical DUESEN-SCHLICK GmbH
Publication of EP1280610A1 publication Critical patent/EP1280610A1/fr
Application granted granted Critical
Publication of EP1280610B1 publication Critical patent/EP1280610B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B05B7/0807—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 to form intersecting jets
    • B05B7/0815—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 to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter

Definitions

  • the invention relates to an external mixing nozzle according to the Preamble of claim 1.
  • External mixing nozzles are used in particular for coating pharmaceutical products such as tablets with paint.
  • the pharmaceutical products are in a rotatable drum arranged (coating drum), while the outer mixing nozzles are arranged on an axis parallel to the drum axis to atomize the ink material vertically within the drum.
  • the paint mist and the products moved by the drum rotation coat them with the paint.
  • the external mixing nozzles used for this purpose consist of a nozzle body to which a flat jet cap is attached.
  • the flat-jet cap is provided with a substantially planar surface portion having a central receiving opening for receiving the mouth approach of a liquid insert, said central opening defines an annular gap surrounding the mouth approach and acts as an air nozzle.
  • horns On both sides of the flat surface portion are located approximately perpendicularly projecting horns from the surface portion, which are each provided with holes which extend obliquely to the axis of the nozzle.
  • These diametrically opposite horns thus include air nozzles which extend obliquely to the axis of the nozzle and cause a flattening of the jet of color or liquid, which is produced by the exiting from the mouth approach and atomized through the annular gap liquid.
  • the horns are formed on the surface facing the central opening of the jet cap away widening conically. Laterally of the surface portion, the jet cap is chamfered, wherein edges are formed between the surface portion and the chamfer.
  • Comparable nozzles and corresponding flat jet caps are known eg from spray guns according to document US-2 475 000.
  • a disadvantage of these external mixing nozzles is the fact that on the one hand due to the comparatively large distance between the outlet openings formed in the horns air nozzles and the central opening of the jet cap and as a result of located on the jet cap edges and horns color deposits and beard formation on the surface of the flat jet cap occur , which over time worsen the spray effect or the quality of the color coating or even prevent the spray effect.
  • the invention is therefore based on the object, a bornmischdüse according to the preamble of claim 1 so to improve that color deposits or beard on the Flat jet cap can be largely prevented.
  • the invention in particular provides an external mixing nozzle a flat jet cap, wherein the flat jet cap a central opening for the mouth approach of the Has liquid insert, wherein the central opening in a substantially flat surface portion without horns is arranged, which extends transversely to the nozzle axis and to the laterally join surfaces that are both symmetrical as are also provided greatly inclined to the nozzle axis, wherein the Transition areas between the surface portion and the Side surfaces are rounded to avoid edges.
  • Mirror-symmetric to the nozzle axis and within the plane Surface area lying are laterally to the central opening Air outlet openings provided in comparable short Distance to the central opening are arranged and at an angle to the Open nozzle axis extending holes.
  • the known external mixing nozzle according to FIG. 1 has a Flat jet cap 1, which consists of a substantially cylindrical body 2 is made, which at its outward, i.e. pointing in the direction of spraying a cross to Has nozzle axis extending surface 3, which with a central opening 4 is provided for receiving the Mouthpiece approach of a liquid insert, not shown.
  • Side of the central opening 3 are horns 6, 7, the each two air outlet openings 9, 10 included, in such a way that the air flow emerging from these openings 9, 10 inclined with respect to the nozzle axis.
  • the just or straight extending surface portion 3 is about edges 11 with lateral, obliquely opposite the nozzle axis Surfaces 12 in connection.
  • These surfaces 12 are opposite a plane that is perpendicular to the nozzle axis, only slightly beveled.
  • the horns 6, 7 are above the surface portion 3 before. As it turns out, the openings 9, 10 receiving surfaces of the horns 6, 7 in the direction of Nozzle axis outwardly conically widening formed.
  • FIG. 2 shows a sectional view through the invention External mixing.
  • the external mixing nozzle has a nozzle body 10 on which a flat-jet cap 11 is attached.
  • the Attachment of the flat-jet cap 11 is preferably carried out by means of a union nut 12, the thread 13 of the Nozzle body is screwed on.
  • the flat-jet cap 11 is provided with a central bore 15 provided in accordance with Figure 2 one on a liquid insert 16 tuned shape, such as conical shape, can have and the liquid insert 16 receives.
  • One with 17 designated mouth approach of the liquid insert 16 is located within a central opening 18 of the flat-jet cap 11, wherein the mouth attachment 17 according to Figures 2 and 3 with respect to Flat jet cap 11 can protrude.
  • the central opening 18 of the Flat-jet cap 11 defines the mouth approach 17th surrounding annular gap 20, through which air emerges, which the atomization of the from the mouth approach 17th leaking liquid material, e.g. Color, causes.
  • the flat-jet cap 11 also has a substantially plane or straight surface portion 21 (without Horns), which is perpendicular to the nozzle axis and according to Figure 2 over the entire width of the flat-jet cap 11th runs. Laterally to the surface portion 21 close Surfaces 22, 23, as can be seen in FIG. Of the Transition between the surface portion 21 and the surfaces 22, 23 is rounded, i. without formation of edges, like this is apparent from Figures 3 and 4.
  • the air outlet openings 24, 25 are in proportion to the known external mixing nozzle according to Figure 1 in a relatively close distance arranged to the central opening 18.
  • the ratio is close Arrangement of the air outlet openings 24, 25 with respect to the central opening 18 on the one hand and the gentle transition from the surface portion 21 to the inclined surfaces 22, 23 prevented Usually a color deposit on the flat-jet cap according to the present invention.
  • the inclined surfaces 22, 23 are in a preferred embodiment under a Angle of about 55 ° to the nozzle axis, which is a flow-directed air duct is appropriate, i. that during the coating process, a backflow at the Nozzle can be passed, in such a way streamlined, that the deposition of a color coating on the nozzle cap or flat jet cap 11 practically largely is prevented. It is essential in the present invention Also, that the design of the flat-jet cap no edges which further reduces the deposition of dyes counteracted.
  • the center is located in the nozzle body 10 and centrally in the liquid insert 16 in known manner, a nozzle needle 27 whose tip in the Mouth approach 17 extends.
  • the nozzle axis is designated 14 in FIGS. 2 and 3.
  • the holes 26, 27 are preferably parallel to the Axis 14 extending channels or holes 31, 32 in Connection with corresponding feed channels on the part of Nozzle body 10 are connected and the supply of air serve.
  • the flat-jet cap 11 consists, as can be seen from FIGS. 2 to 4 results, essentially from a cylindrical body, to its front by the perpendicular to the nozzle axis extending planar surface portion 21 extends and continues is defined by inclined surfaces 22, 23 which are symmetrical to Nozzle axis of the strip-shaped surface portion 21 in Direction of the union nut 12 widening trapezoidal run.
  • the external mixing nozzle according to the invention also has the advantage that by the short distances between the Air outlet openings 24 and 25 on the one hand to the the central opening 18 on the other hand, the result of the Air outlet from this opening resulting forming forces a have a high effect on the color ray that comes from the Mündungsungsansatz 17 of the liquid insert 16 exits, wherein this effect is much stronger than in a External mixing nozzle with a flat jet cap according to FIG. 1.
  • the optimal atomization quality of the invention External mixing nozzle is according to a preferred embodiment then reached when the holes 26, 27 has a diameter of 2.0 mm and the central opening 18 has a diameter of about 4.2 mm. In such an optimization will at least Ensures the same atomization quality as one External mixing nozzle with a flat jet cap according to FIG. 1.
  • Lacquers such as cellulose finishes and Eudragit atomized.

Landscapes

  • Nozzles (AREA)
  • Lubricants (AREA)
  • Disintegrating Or Milling (AREA)

Claims (6)

  1. Buse mélangeuse externe avec un capot d'éjection plat (11) qui est fixé sur un corps (10) de buse,
       dans laquelle le capot d'éjection plat (11) est doté d'un alésage (15) central orienté vers le corps (10) de buse, ou similaire, pour la réception d'un insert de liquide (16), et comprend un orifice (18) central qui reçoit un embout d'embouchure (17) de l'insert de liquide (16) en déterminant une fente annulaire (20) entourant l'embout d'embouchure (17),
       dans laquelle le capot d'éjection (11) définit une section superficielle plate s'étendant perpendiculairement à l'axe du corps de buse (10), à l'intérieur de laquelle est prévu l'orifice central (18), et dans laquelle sont raccordées de plus, sur le côté de la section superficielle plate (21), deux surfaces latérales (22, 23) s'étendant sensiblement symétriquement et perpendiculairement à l'axe (14) du corps de buse (10), se rattachant à la section superficielle plate (21),
       caractérisée en ce que
       le capot d'éjection plat (11) contient dans la zone de section superficielle plate (21) des orifices d'échappement (24, 25) prévus à la même distance par rapport à l'orifice central (18), lesquels communiquent avec les alésages (26, 27) qui sont prévus dans le capot d'éjection (11) en s'étendant perpendiculairement à l'axe du corps de buse (10),
       et dans laquelle les passages de la section superficielle plate (21) aux surfaces latérales (22, 23) sont définis par des passages doux ou arrondis.
  2. Buse mélangeuse externe selon la revendication 1,
    caractérisée en ce que,
       les orifices d'échappement (24, 25) sont prévus symétriquement par rapport à l'axe (14) du corps de buse (10).
  3. Buse mélangeuse externe selon la revendication 1 ou 2,
    caractérisée en ce que,
       la distance entre l'orifice central (18) et les orifices d'échappement (24, 25) est d'environ 6,5 mm.
  4. Buse mélangeuse exteme selon au moins une des revendications précédentes,
       caractérisée en ce que,
       l'embout d'embouchure (17) de l'insert de liquide (16) est situé en face de la section superficielle (21).
  5. Buse mélangeuse externe selon au moins une des revendications précédentes,
       caractérisée en ce que,
       les surfaces latérales (22, 23) s'étendent selon un angle d'environ 55° par rapport à l'axe (14) de la buse.
  6. Buse mélangeuse externe selon au moins une des revendications précédentes,
       caractérisée en ce que,
       le diamètre de l'orifice central (18) est d'environ 4,2 mm, et le diamètre des alésages perpendiculaires (26, 27) est respectivement d'environ 2 mm.
EP02719976A 2001-03-15 2002-02-28 Buse melangeuse externe Expired - Lifetime EP1280610B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10112562A DE10112562B4 (de) 2001-03-15 2001-03-15 Aussenmischdüse
DE10112562 2001-03-15
PCT/EP2002/002199 WO2002074446A1 (fr) 2001-03-15 2002-02-28 Buse melangeuse externe

Publications (2)

Publication Number Publication Date
EP1280610A1 EP1280610A1 (fr) 2003-02-05
EP1280610B1 true EP1280610B1 (fr) 2005-05-25

Family

ID=7677628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02719976A Expired - Lifetime EP1280610B1 (fr) 2001-03-15 2002-02-28 Buse melangeuse externe

Country Status (7)

Country Link
US (1) US7051954B2 (fr)
EP (1) EP1280610B1 (fr)
AT (1) ATE296166T1 (fr)
CA (1) CA2408384C (fr)
DE (2) DE10112562B4 (fr)
ES (1) ES2242850T3 (fr)
WO (1) WO2002074446A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10345342A1 (de) * 2003-09-19 2005-04-28 Engelhard Arzneimittel Gmbh Verfahren zur Herstellung eines lagerstabilen Extraktes aus Efeublättern, sowie ein nach diesem Verfahren hergestellter Extrakt
DE102008013960A1 (de) * 2008-03-12 2009-09-17 Albonair Gmbh Dosiersystem zur Eindüsung einer Harnstofflösung in den Abgasstrom eines Verbrennungsmotors
US20140069084A1 (en) * 2008-03-12 2014-03-13 Albonair Gmbh Metering System for Spraying a Urea Solution into the Exhaust Gas Stream of an Internal Combustion Engine
US20100282866A1 (en) 2009-05-06 2010-11-11 Briggs & Stratton Corporation Chemical injector for spray device
DE202010005280U1 (de) 2010-04-22 2010-08-19 Düsen-Schlick GmbH Zweistoffdüse
GB2491929B (en) * 2011-06-17 2017-07-26 Earlex Ltd Spray gun
US20150097061A1 (en) * 2013-10-04 2015-04-09 SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project, as such owners exist now and Disc centrifuge nozzle
US9901943B2 (en) 2013-10-23 2018-02-27 Briggs & Stratton Corporation Pressure washer gun with chemical injection and foaming capabilities
JP6423495B1 (ja) * 2017-07-21 2018-11-14 株式会社メンテック ノズルキャップ、それを備えたノズル装置及び薬液の散布方法
KR102184708B1 (ko) * 2017-12-12 2020-11-30 박종수 동축제어용 이중노즐
DE102019205743A1 (de) 2019-04-18 2020-10-22 Glatt Gesellschaft Mit Beschränkter Haftung Verfahren zur Steuerung oder Regelung des Volumenstroms einer Düse

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1633291A (en) * 1926-09-07 1927-06-21 Peerless Pneumatic Systems Inc Spray gun
GB508719A (en) * 1937-01-25 1939-07-05 Albert Krautzberger Improvements in apparatus for spraying paint and other substances
US2475000A (en) * 1947-02-26 1949-07-05 Eclipse Air Brush Co Spray gun nozzle
GB8327151D0 (en) * 1983-10-11 1983-11-09 Marshall Sons & Co Ltd Spray nozzles
DE3709543C2 (de) * 1987-03-24 1996-06-05 Wagner Gmbh J Vorrichtung zum Zerstäuben einer Flüssigkeit
US5209405A (en) * 1991-04-19 1993-05-11 Ransburg Corporation Baffle for hvlp paint spray gun
US5979787A (en) * 1997-12-13 1999-11-09 Usbi Co. Apparatus and method for convergently applying polymer foam to substrate
US5964418A (en) * 1997-12-13 1999-10-12 Usbi Co. Spray nozzle for applying metal-filled solventless resin coating and method

Also Published As

Publication number Publication date
US7051954B2 (en) 2006-05-30
ATE296166T1 (de) 2005-06-15
EP1280610A1 (fr) 2003-02-05
DE10112562B4 (de) 2005-02-17
ES2242850T3 (es) 2005-11-16
CA2408384C (fr) 2005-01-18
DE10112562A1 (de) 2002-09-19
WO2002074446A1 (fr) 2002-09-26
CA2408384A1 (fr) 2002-10-30
US20040035952A1 (en) 2004-02-26
DE50203179D1 (de) 2005-06-30

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