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WO2007003059A1 - Dispositif de pulverisation a grande vitesse de differents agents - Google Patents

Dispositif de pulverisation a grande vitesse de differents agents Download PDF

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Publication number
WO2007003059A1
WO2007003059A1 PCT/CH2005/000375 CH2005000375W WO2007003059A1 WO 2007003059 A1 WO2007003059 A1 WO 2007003059A1 CH 2005000375 W CH2005000375 W CH 2005000375W WO 2007003059 A1 WO2007003059 A1 WO 2007003059A1
Authority
WO
WIPO (PCT)
Prior art keywords
spraying device
medium
mixing chambers
mixing
steam
Prior art date
Application number
PCT/CH2005/000375
Other languages
German (de)
English (en)
Inventor
Hans U. Jakob
Original Assignee
H. U. Jakob Papiertechnik 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
Application filed by H. U. Jakob Papiertechnik Ag filed Critical H. U. Jakob Papiertechnik Ag
Priority to PCT/CH2005/000375 priority Critical patent/WO2007003059A1/fr
Priority to EP05754454A priority patent/EP1902178A1/fr
Priority to CA002614222A priority patent/CA2614222A1/fr
Publication of WO2007003059A1 publication Critical patent/WO2007003059A1/fr

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
    • 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
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • 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
    • B05B7/0884—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 the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being aligned
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/50—Spraying or projecting

Definitions

  • Spraying device for spraying various media at high speed.
  • the invention relates to a spraying device for acting on moving web-shaped products, for example paper in paper machines with gaseous or liquid media.
  • the problem is that the entrained by the fast moving web airflow is insufficiently penetrated, so that the medium to be applied to the web can be used only with a poor efficiency.
  • the invention has for its object to provide an improved system that does not have the disadvantages of the prior art. This is achieved according to the invention by the features stated in the characterizing part of the patent claim.
  • Humidification of a paper web by means of a high-resolution water film without droplet formation Humidification of a paper web by means of superheated steam Heating of a paper web by means of saturated steam Heating of a paper web by means of saturated steam Heating of a paper web by hot water heating of a paper web by means of hot air Cooling of a paper web by means of cold air Cooling of a paper web by means of cold water Loading a paper web by means of chemicals
  • All of the above-mentioned media can be used both in the longitudinal direction of the machine (MD) and in the transverse direction of the machine (CD) are applied in a controlled manner in zones.
  • the smallest zone distances in the transverse direction are 50 mm.
  • Fig. 1 is a Querterrorismscho a
  • Fig. 2 is an enlarged front view of the nozzle plate of the sprayer
  • Fig. Fig. 3 is a side view of the nozzle plate, partially longitudinally sectioned.
  • Fig. 4 is a side view of an injection capillary
  • Fig. 5 shows an enlarged cross section through the region of the nozzle plate according to a first variant of the mixing chamber
  • Fig. ⁇ shows an enlarged cross section through the region of the nozzle plate according to a second
  • Variant of the mixing chamber Fig. 7 shows an enlarged cross section through the
  • the spraying device shown in section in Fig. 1 consists essentially of a transverse to a paper web 21 extending spray bar 22. This consists on the one hand of a preheating 1 and a central functional part, ie the actual spray system, which will be described in detail below.
  • the preheat volume includes a number of parallel and central ones Functional part surrounding pipes or preheat chambers, which consist of commercially available profile tubes or bent sheets.
  • the preheat volume serves to raise the spray bar
  • the pipe system of the preheating volume provides additional strength for spray bars, which are designed for web widths up to 10 m in the transverse direction.
  • the tubes of the preheat volume are interconnected within a weldment and supplied with preheat steam.
  • the preheating works independently of the
  • Spray function and is supplied separately. It is supplied with 0.5 ... 1.5 bar of steam or an electric heating system. A safety valve limits this pressure at max. 1.5 bar.
  • a distribution chamber 2 is supplied with the media steam or air (in various states of pressure and temperature). It extends over the entire profile width (CD) or the length of the spray bar.
  • the distribution chamber 2 and the preheating chambers of the preheating volume 1 are each provided with condensate drains 20 on both end faces.
  • a number of arranged in the longitudinal direction of the spray bar diffuser chambers 6 is arranged.
  • a steam / air control valve 3 is arranged on the spray bar. This comprises a receptacle for a conical seat 5 and a pneumatic actuator 4. On the input side, the medium vapor or air is supplied to the steam / air control valve and dosed according to the conical seat position in the diffuser chamber.
  • Control valve 3 are designed in the range of 5.0 ... 25 mm, ideally the holes measure 15.0 mm.
  • the conical seat 5 is thus moved linearly within the steam / air control valve and thus reaches its metering function.
  • the pneumatic actuator has a travel of 18- 20 mm, its pressure range (control) is within 0.5 ... 3.5 bar.
  • the high positioning accuracy with minimal internal mechanical resistance is advantageous for use in the spray device.
  • the conical seat 5 must be designed application-specific. In order to dose the required mass flow (steam or air) with high resolution, the conical contour is excellent determined by field trials. The range of the amount to be dosed is within 3 and 80 kg / h (steam). The field of application of the present spraying device is ideally around 8 kg / h.
  • a number of diffuser chambers 6 to be determined is arranged therein.
  • the carrier medium steam or air is metered from the distribution chamber via steam / air control valve and correspondingly in each one
  • Conducted diffuser chamber The length of such a chamber transverse to the paper web is between 50 and 2000 mm, preferably about 300 mm.
  • the subdivision into several diffuser chambers has the task that web-shaped products in the transverse direction (CD) can be controlled regulated.
  • the distribution rail 7 With a distribution rail 7, the carrier medium (steam or air) from the diffuser chamber 6 is passed on to a nozzle plate 8.
  • the distribution rail is made of solid material (stainless steel 1.4571) and has
  • nozzle plate 8 two separate mixing chambers 9 are arranged, which are formed as grooves. From the bottom of the mixing chamber to the bottom of the nozzle plate, a plurality of holes 15 are arranged, which are distributed according to a Düsenbohrmuster, as shown in Fig. 2 is shown. The length of such a mixing chamber ideally measures 50 mm.
  • the nozzle plate serves to spray the mixture to be impinged transitionless on the web-shaped product (atomic atomization).
  • the mixing chamber (9) is a small-volume cavity of 1000 to 2500 mm 2 .
  • the carrier medium vapor or air
  • the medium condensate, water or special chemical.
  • the mixing chamber can be configured differently in order to bring about application-specific effects. For example, as shown in FIG. 4, it can be equipped with a suction / turbulence tissue 14, with a baffle plate 16 according to FIG. 5 or with a space narrowing 17 according to FIG.
  • Another important component is a specially developed injection capillary 10.
  • This has the task of bringing the medium to be mixed (water and chemicals) in the mixing chamber 9 with the carrier medium (steam or air) together.
  • the injection capillary is provided on its underside with a number of 5 to 50 fine holes 19. Preferably, the number of these holes is 15 per 50 mm zone.
  • the diameter of these holes with a specially developed method is between 0.01 and 0.2 mm, preferably 0.07 to 0.09 mm.
  • the injection capillary is operated with the medium to be mixed at an overpressure of 0.2 ... 10.0 bar.
  • the medium to be mixed must be precisely metered and above all introduced via a line of 50 mm into the mixing chamber.
  • the injection capillary is characterized by its reliability and its wide range of applications, and Can be used and designed application-specific.
  • the injection capillary is fastened in the spraying device by means of a water fitting 11, a collet 12 and a plug connection for water 13.
  • the three components mechanically hold the capillaries in their position and deliver the medium to be mixed absolutely tightly and reliably to the injection capillary.
  • the collet 12 clamps the capillary positively and lets them align exactly in the required position.
  • the plug connection 13 with sealing system consists of special O-ring seals and is designed for the connection of a Teflon tube.
  • the number of holes is in the range of 20 - 500, preferably 154; their diameter is in the range of 0.05-1.0 mm and is preferably about 0.15 mm; the distance of the bores from each other is in the range of 0.05 - 5.0 mm, preferably about 0.8 mm; their angle of inclination is between o and 45 °, preferably about 20 °.
  • the high application speed of the feed media results in a high feed efficiency achieved because the laminar air flows of high-speed paper webs are easily broken with the speed of the application media.
  • media can be applied to paper webs at speeds of up to 2,200 m / min.
  • the mixing chambers 8 may additionally be provided with various components as an insert or baffles:
  • a suction and turbulence fabric 15 is inserted, which causes the homogeneous distribution and the mixing of the media.
  • baffle plate 16 Injection capillary and the holes of the nozzle plate a specifically designed baffle plate 16 inserted, which causes the homogeneous distribution and the mixing of the media.
  • This baffle plate has a special sputtering property.
  • two bilaterally arranged streamlined space narrowings 17 arranged in the direction of flow are applied between the injection capillary 10 and the bores of the nozzle plate, which further improve the homogeneous distribution and the mixing of the media.
  • This space narrowing has a special distribution property.
  • the bores are designed vertically and / or at oblique angles and according to any nozzle pattern 15. This will be a homogeneous and Adhesion-free atomization achieved with extremely high speed.
  • Spraying devices of the type described are in different locations of a machine or a
  • Can be used calender system In particular, they are suitable for use in a wet end, i. Fourdrinier, forming, or press section for increasing press efficiency (dry content increase), applying chemicals to a paper web, controlling the moisture cross profile, calenders, machine calenders, on-line supercalenders, off-line supercalenders or shoe calenders to influence surface properties such as gloss, smoothness, porosity, moisture, curl (flatness), web temperature, thickness and the like according to the foregoing description of the principle of operation.
  • a wet end i. Fourdrinier, forming, or press section for increasing press efficiency (dry content increase), applying chemicals to a paper web, controlling the moisture cross profile, calenders, machine calenders, on-line supercalenders, off-line supercalenders or shoe calenders to influence surface properties such as gloss, smoothness, porosity, moisture, curl (flatness), web temperature, thickness and the like according to the foregoing description of the principle of operation.
  • the inventive device has a number of advantages over conventional systems such as Düsenfeuchtern, steam box and
  • Another advantage lies in the increased range of the transverse control since all exposures of the aforementioned media can be regulated in the transverse direction.

Landscapes

  • Paper (AREA)
  • Nozzles (AREA)

Abstract

Dispositif de pulvérisation qui possède des chambres de mélange allongées (9) pour le mélange de l'agent destiné à être appliqué sur un produit avec un milieu porteur. L'agent est introduit dans les chambres de mélange par des tubes capillaires (10) de manière que l'agent soit injecté de façon régulièrement répartie. Des buses de sortie (15) sont situées sur la longueur des chambres de mélange. Lesdites chambres de mélange se présentent sous forme de rainures ménagées dans une plaque (8) à buses, et les buses de sortie sous forme de trous ménagés dans le fond des rainures.
PCT/CH2005/000375 2005-07-04 2005-07-04 Dispositif de pulverisation a grande vitesse de differents agents WO2007003059A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CH2005/000375 WO2007003059A1 (fr) 2005-07-04 2005-07-04 Dispositif de pulverisation a grande vitesse de differents agents
EP05754454A EP1902178A1 (fr) 2005-07-04 2005-07-04 Dispositif de pulverisation a grande vitesse de differents agents
CA002614222A CA2614222A1 (fr) 2005-07-04 2005-07-04 Dispositif de pulverisation a grande vitesse de differents agents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2005/000375 WO2007003059A1 (fr) 2005-07-04 2005-07-04 Dispositif de pulverisation a grande vitesse de differents agents

Publications (1)

Publication Number Publication Date
WO2007003059A1 true WO2007003059A1 (fr) 2007-01-11

Family

ID=35276333

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2005/000375 WO2007003059A1 (fr) 2005-07-04 2005-07-04 Dispositif de pulverisation a grande vitesse de differents agents

Country Status (3)

Country Link
EP (1) EP1902178A1 (fr)
CA (1) CA2614222A1 (fr)
WO (1) WO2007003059A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025611A1 (de) 2007-05-31 2008-12-04 Voith Patent Gmbh Verfahren und Vorrichtung zum Befeuchten einer Materialbahn
WO2010116045A1 (fr) * 2009-04-09 2010-10-14 Upm-Kymmene Corporation Procédé de traitement d'une surface d'un substrat
DE102013219021A1 (de) * 2013-09-23 2015-03-26 Voith Patent Gmbh Zweistoffdüsenanordnung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1334072A (en) * 1970-10-01 1973-10-17 Ives F E Liquid resin spray dispenser
US4250951A (en) * 1978-04-15 1981-02-17 Lechler Gmbh & Co. Kg Device for spraying of a coolant on steel plates during continuous casting
WO1990003225A1 (fr) * 1988-09-23 1990-04-05 Patrick Sundholm Procede et appareil d'enduction de papier et analogue
US4945854A (en) * 1989-03-17 1990-08-07 Mobay Corporation Apparatus for the distribution of a foamable reaction mixture upon a moving base
WO1994011116A1 (fr) * 1992-11-06 1994-05-26 Patrick Sundholm Procede et appareil pour l'application d'un revetement sur du papier ou similaire
EP0838551A1 (fr) * 1996-10-28 1998-04-29 Valmet Corporation Méthode et dispositif pour enduire une bande de papier ou de carton en mouvement
WO2001002097A1 (fr) * 1999-07-01 2001-01-11 Metso Paper, Inc. Couchage et procede de couchage
US6503325B1 (en) * 1998-05-07 2003-01-07 Voith Sulzer Papiertechnik Patent Gmbh Device and method for applying a coating medium onto a moving surface
US20040016819A1 (en) * 1999-12-10 2004-01-29 Scott Kerry Maxwell Apparatus and method for generating a treatment fluid and application thereof
EP1486610A1 (fr) * 2003-06-13 2004-12-15 Voith Paper Patent GmbH Dispositif pour la fabrication et/ou le traitement d'une bande de matériau fibreux

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1334072A (en) * 1970-10-01 1973-10-17 Ives F E Liquid resin spray dispenser
US4250951A (en) * 1978-04-15 1981-02-17 Lechler Gmbh & Co. Kg Device for spraying of a coolant on steel plates during continuous casting
WO1990003225A1 (fr) * 1988-09-23 1990-04-05 Patrick Sundholm Procede et appareil d'enduction de papier et analogue
US4945854A (en) * 1989-03-17 1990-08-07 Mobay Corporation Apparatus for the distribution of a foamable reaction mixture upon a moving base
WO1994011116A1 (fr) * 1992-11-06 1994-05-26 Patrick Sundholm Procede et appareil pour l'application d'un revetement sur du papier ou similaire
EP0838551A1 (fr) * 1996-10-28 1998-04-29 Valmet Corporation Méthode et dispositif pour enduire une bande de papier ou de carton en mouvement
US6503325B1 (en) * 1998-05-07 2003-01-07 Voith Sulzer Papiertechnik Patent Gmbh Device and method for applying a coating medium onto a moving surface
WO2001002097A1 (fr) * 1999-07-01 2001-01-11 Metso Paper, Inc. Couchage et procede de couchage
US20040016819A1 (en) * 1999-12-10 2004-01-29 Scott Kerry Maxwell Apparatus and method for generating a treatment fluid and application thereof
EP1486610A1 (fr) * 2003-06-13 2004-12-15 Voith Paper Patent GmbH Dispositif pour la fabrication et/ou le traitement d'une bande de matériau fibreux

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025611A1 (de) 2007-05-31 2008-12-04 Voith Patent Gmbh Verfahren und Vorrichtung zum Befeuchten einer Materialbahn
US8029648B2 (en) 2007-05-31 2011-10-04 Voith Patent Gmbh Process and device to moisten a web of material
WO2010116045A1 (fr) * 2009-04-09 2010-10-14 Upm-Kymmene Corporation Procédé de traitement d'une surface d'un substrat
US20120094101A1 (en) * 2009-04-09 2012-04-19 Upm-Kymmene Corporation Method for treating a surface of a substrate
US8940372B2 (en) 2009-04-09 2015-01-27 Upm-Kymmene Corporation Method for treating a surface of a substrate
DE102013219021A1 (de) * 2013-09-23 2015-03-26 Voith Patent Gmbh Zweistoffdüsenanordnung

Also Published As

Publication number Publication date
CA2614222A1 (fr) 2007-01-11
EP1902178A1 (fr) 2008-03-26

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