EP0453801A2 - Device for spraying a dispersion - Google Patents

Device for spraying a dispersion Download PDF

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Publication number
EP0453801A2
EP0453801A2 EP91104899A EP91104899A EP0453801A2 EP 0453801 A2 EP0453801 A2 EP 0453801A2 EP 91104899 A EP91104899 A EP 91104899A EP 91104899 A EP91104899 A EP 91104899A EP 0453801 A2 EP0453801 A2 EP 0453801A2
Authority
EP
European Patent Office
Prior art keywords
coupling
stamp
spray head
spraying
designed
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.)
Granted
Application number
EP91104899A
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German (de)
French (fr)
Other versions
EP0453801B1 (en
EP0453801A3 (en
Inventor
René Schmitter
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.)
Lonza AG
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Lonza AG
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Filing date
Publication date
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Publication of EP0453801A3 publication Critical patent/EP0453801A3/en
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Publication of EP0453801B1 publication Critical patent/EP0453801B1/en
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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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B05B1/3066—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the valve element being at least partially hollow and liquid passing through it when the valve is opened
    • 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
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • B05B15/522—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings
    • B05B15/5223—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings the cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the flow of liquid or other fluent material through said opening
    • B05B15/5225—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings the cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the flow of liquid or other fluent material through said opening the cleaning element being located upstream of the discharge opening or being actuated upstream therefrom

Definitions

  • the invention relates to a device for spraying disperse systems with a spray head which has a perforated nozzle, with an inlet for disperse systems, with a plunger which can be pushed inside the spray head in front of the opening of the perforated nozzle and with a coupling for a connection to a feed element.
  • a cleaning member is slidably mounted in a tubular spray head, which has through-channels for the liquid to be sprayed, which is also connected to a tip which, when the cleaning member moves relative to the spray head, into an opening in the perforated nozzle can be moved to clean this opening (FR-PS 569 852).
  • the cleaning should be done without interrupting the normal functions of the spray head.
  • a spray valve for spraying viscous liquids which is designed as a needle valve (US Pat. No. 2,794,683).
  • a perforated disk is arranged concentrically with its opening in front of the perforated nozzle.
  • a plunger that can be displaced inside the spray head has a cylindrical or conical section at its head end, which is inserted through the perforated disk into the opening of the perforated nozzle can to push dirt out of this opening of the perforated nozzle.
  • a spray device is known in which a sieve insert and a stripping device are provided in the spray head between the inlet of the disperse system and the perforated nozzle. This is to ensure that coarse-grained constituents of the disperse system which can clog the nozzle are retained and forcibly stripped off.
  • the relatively coarse-grained graphites on the one hand and the polymers which tend to resinify in the nozzle opening on the other hand continuously reduce the throughput in the known spray devices and lead to their blockage.
  • the invention has for its object a more simply constructed, easy to clean and quickly replaceable To create a device by means of which disperse systems containing coarse-grained substances or polymers that tend to resinify can be sprayed over a long period of time without reducing the throughput.
  • the stamp has one or more channels for the disperse system, which emanate from the coupling side of the stamp, pass through the stamp and into the cavity of the spray head flow out.
  • the plunger has an inlet channel for the disperse system axially on the coupling side, from which one or more outlet channels branch off toward the nozzle-side end.
  • the output channel or the output channels are either branched at an angle to the inlet channel so that the disperse system strikes the inner wall of the spray head designed as a cavity radially or tangentially, or are offset parallel to the axis to the inlet channel so that the disperse system is axial meets the inner wall of the spray head, which is designed as a cavity.
  • the plunger has one or more channels which, starting from the coupling side of the plunger and running parallel to the axis through the plunger, open to the side of the plunger tip into the cavity of the spray head.
  • the end of the stamp on the nozzle side has a conical shape with a cone angle of 15 ° to 90 °, that the inside of the perforated nozzle is adapted to the punch tip and that the punch is designed so that it can move in the longitudinal direction via a spring so that it is pushed back out of the spray head by the spray pressure during the spraying process, and as soon as the spray pressure drops to an undesirable level the opening of the perforated nozzle is pushed.
  • the coupling is advantageously designed as a holder for the spraying device.
  • the coupling preferably has an axial passage for the disperse system and is connected either axially or radially to the housing of the spray device.
  • the coupling is expediently designed as a screw or plug-in coupling, preferably as a plug-in coupling.
  • the plunger is pressed briefly from the cavity into the spray head at the perforated nozzle, which means that the perforated nozzle is pressed out of any clogged particles. After the punch has been withdrawn, the perforated nozzle is fully effective again.
  • perforated nozzles with nozzle openings of 0.5 to 1.0 mm are preferably used.
  • the spraying device can also be used for other known disperse systems which, for example, tend to resinify when in contact with air or which, up to now, have been difficult or impossible to spray with known devices due to the particle size of the disperse.
  • the stamp can be controlled in such a way that it is pressed into the perforated nozzle after the supply on the disperse system has been switched off, and at the same time cleans and securely closes it. When the disperse system is fed again, the stamp can be pulled back into the spray head.
  • a plunger 1 which can be moved in the longitudinal direction via a spring 8.
  • the plunger 1 has an inlet channel 3 for the disperse system on the coupling side, from which two outlet channels 4 branch off towards the end on the nozzle side, as shown in FIG. 1.
  • the number of output channels 4 can vary between one and ten, preferably between three and six.
  • the output channels 4 are preferably designed as bores with diameters between 0.5 mm and 3 mm.
  • the output channels 4 can be arranged according to FIG. 2 at a right angle with respect to the axis of the spraying device or according to FIG. 1 at any angle to the axis or according to FIG. 4 offset parallel to the axis.
  • one or more, expediently one to ten, preferably three to six, channels 6 are provided in the plunger 1 parallel to the axis, starting from the coupling side of the plunger 1 and starting from the side of the plunger tip into the cavity 2 of the spray head 5 mouth.
  • These channels 6 are also designed as bores whose diameters vary between 0.5 mm and 3 mm.
  • the nozzle-side end of the stamp 1 has a conical tip.
  • the cone angle is 15 ° to 90 °.
  • the shape of the perforated nozzle 7 is adapted to the stamp 1 against the interior of the housing.
  • the opening of the perforated nozzle 7 can be flat jet or omnidirectional to have.
  • the diameter of the perforated nozzle 7 depends on the desired throughput and spray pattern and is 0.3 mm to 4 mm.
  • the plunger 1 is designed to be movable in the longitudinal direction via the spring 8 in such a way that it is pressed back from the spray head 5 by the spray pressure during the spraying process. As soon as the spray pressure drops to an undesirable level, the plunger 1 is pushed permanently in front of the opening of the perforated nozzle 7.
  • the coupling 9 is designed as a plug or screw coupling and has an axial passage channel 10 for the disperse system.
  • the coupling 9 can be axially connected to the spray device according to FIGS. 1 to 4 or radially to the spray device according to FIG. 5. If the coupling 9 according to the embodiment of FIG. 5 is radially connected to the spray device, then, as shown in FIG. 6, the disperse system can pass directly into the cavity 2 of the spray head 5 without passing through channels in the stamp.
  • the coupling 9 can form the holder of the spraying device, which enables a low installation height and in particular favors the installation of the nozzle devices in rolling stands, which offer very little space for additional installations.
  • the coupling 9 is designed as a plug-in coupling, it can be inserted with a handle with a radial movement into a counter housing 12 of a feed element 13 and locked radially.
  • the spray device is fed via the feed element 13, which is designed as a feed pipe or as a distributor, via known pump devices with the disperse system.
  • the pressures used are in the range from 5 to 100 bar, usually between 20 and 80 bar.

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  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
  • Coating Apparatus (AREA)
  • Manipulator (AREA)

Abstract

The device for spraying dispersions, in particular lubricant dispersions containing graphite, has a spray head 5, an inlet 10 for the dispersion, a plunger 1 which can be pushed in front of the opening of a hole nozzle 7 inside the spray head 5 and a coupling 9 for a connection to a feed element 13. The plunger 1 has one or more channels 3, 4 which starting from the coupling side of the plunger 1 run through the plunger 1 and open into the cavity 2 of the spray head 5. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Versprühen von dispersen Systemen mit einem Sprühkopf, der eine Lochdüse aufweist, mit einem Einlaß für disperse Systeme, mit einem im Inneren des Sprühkopfes vor die Öffnung der Lochdüse schiebbaren Stempel und mit einer Kupplung für eine Verbindung mit einem Speiseorgan.The invention relates to a device for spraying disperse systems with a spray head which has a perforated nozzle, with an inlet for disperse systems, with a plunger which can be pushed inside the spray head in front of the opening of the perforated nozzle and with a coupling for a connection to a feed element.

In einer zum Stand der Technik gehörenden Sprühvorrichtung ist in einem rohrförmigen Sprühkopf, der Durchgangskanäle für die zu versprühende Flüssigkeit aufweist, ein Reinigungsorgan verschiebbar gelagert, welches zugleich mit einer Spitze verbunden ist, die bei einer Relativbewegung des Reinigungsorgans zu dem Sprühkopf in eine Öffnung der Lochdüse verschiebbar ist, um diese Öffnung zu reinigen (FR-PS 569 852). Die Reinigung soll dabei ohne Unterbrechung der normalen Funktionen des Sprühkopfes erfolgen.In a spray device belonging to the prior art, a cleaning member is slidably mounted in a tubular spray head, which has through-channels for the liquid to be sprayed, which is also connected to a tip which, when the cleaning member moves relative to the spray head, into an opening in the perforated nozzle can be moved to clean this opening (FR-PS 569 852). The cleaning should be done without interrupting the normal functions of the spray head.

Bekannt ist weiterhin ein Sprühventil zum Versprühen viskoser Flüssigkeiten, welches als Nadelventil ausgebildet ist (US-PS 2 794 683). In einem Sprühkopf dieses Nadelventils ist konzentrisch zu dessen Öffnung vor der Lochdüse eine Lochscheibe angeordnet. Ein im Inneren des Sprühkopfes verschiebbarer Stempel weist an seinem Kopfende einen zylindrischen oder konischen Abschnitt auf, der durch die Lochscheibe in die Öffnung der Lochdüse eingeschoben werden kann, um aus dieser Öffnung der Lochdüse Verschmutzungen herauszudrücken.Also known is a spray valve for spraying viscous liquids, which is designed as a needle valve (US Pat. No. 2,794,683). In a spray head of this needle valve, a perforated disk is arranged concentrically with its opening in front of the perforated nozzle. A plunger that can be displaced inside the spray head has a cylindrical or conical section at its head end, which is inserted through the perforated disk into the opening of the perforated nozzle can to push dirt out of this opening of the perforated nozzle.

Aus der DE-PS 27 24 931 ist eine Sprühvorrichtung bekannt, bei der im Sprühkopf zwischen dem Einlaß des dispersen Systems und der Lochdüse ein Siebeinsatz und eine Abstreifvorrichtung vorgesehen sind. Damit soll erreicht werden, daß grobkörnige Bestandteile des dispersen Systems, die die Düse verstopfen können, zurückgehalten und zwangsweise abgestreift werden.From DE-PS 27 24 931 a spray device is known in which a sieve insert and a stripping device are provided in the spray head between the inlet of the disperse system and the perforated nozzle. This is to ensure that coarse-grained constituents of the disperse system which can clog the nozzle are retained and forcibly stripped off.

Insbesondere beim Besprühen von Walzen bei der Warmumformung von Blechen, Hohlprofilen (Rohren) oder Profilen mit graphithaltigen Dispersionen, welches über einen längeren Zeitraum erfolgt, haben sich die genannten Sprühvorrichtungen als nicht tauglich erwiesen; entweder weil der Siebeinsatz regelmässig verstopft oder der Ein/Ausbau aufwendig und langwierig ist.In particular when spraying rolls during the hot forming of sheets, hollow profiles (tubes) or profiles with graphite-containing dispersions, which takes place over a longer period of time, the spray devices mentioned have proven to be unsuitable; either because the sieve insert is regularly blocked or the installation / removal is complex and lengthy.

Suspensionen, die Graphit in einer oberen Korngröße von 25 bis 150 µm als Dispersum und eine Flüssigkeit als Dispersionsmittel enthalten und insbesondere solche Suspensionen, die neben dem Dispersionsmittel noch Anteile an Stabilisatoren, Dispersionshilfsmittels und Polymeren, beispielsweise gemäß der DE-OS 24 50 716, enthalten, könnten mit den bekannten Vorrichtungen für das Besprühen von Walzen schlecht versprüht werden. Die relativ grobkörnigen Graphite einerseits und die zur Verharzung in der Düsenöffnung neigenden Polymere andererseits vermindern den Durchsatz bei den bekannten Sprühvorrichtungen laufend und führen zu deren Verstopfung.Suspensions containing graphite in an upper grain size of 25 to 150 microns as a disperse and a liquid as a dispersant and in particular those suspensions which, in addition to the dispersant, also contain proportions of stabilizers, dispersion auxiliaries and polymers, for example according to DE-OS 24 50 716 , could be poorly sprayed with the known devices for spraying rollers. The relatively coarse-grained graphites on the one hand and the polymers which tend to resinify in the nozzle opening on the other hand continuously reduce the throughput in the known spray devices and lead to their blockage.

Der Erfindung liegt die Aufgabe zugrunde, eine einfacher konstruierte, leicht reinigbare und schnell austauschbare Vorrichtung zu schaffen, mittels derer disperse Systeme, die grobkörnige Stoffe oder zur Verharzung neigende Polymere enthalten, ohne Verminderung des Durchsatzes über längere Zeit versprüht werden können.The invention has for its object a more simply constructed, easy to clean and quickly replaceable To create a device by means of which disperse systems containing coarse-grained substances or polymers that tend to resinify can be sprayed over a long period of time without reducing the throughput.

Diese Aufgabe wird ausgehend von der Vorrichtung zum Versprühen von dispersen Systemen der gattungsgemäßen Art erfindungsgemäß dadurch gelöst, daß der Stempel ein oder mehrere Kanäle für das disperse System aufweist, die von der Kupplungsseite des Stempels ausgehen, durch den Stempel hindurchgehen und in den Hohlraum des Sprühkopfes münden.This object is achieved on the basis of the device for spraying disperse systems of the generic type in that the stamp has one or more channels for the disperse system, which emanate from the coupling side of the stamp, pass through the stamp and into the cavity of the spray head flow out.

Es ist vorteilhaft, daß der Stempel axial auf der Kupplungsseite einen Einlaßkanal für das disperse System aufweist, von dem zum düsenseitigen Ende hin ein oder mehrere Ausgangskanäle abzweigen.It is advantageous that the plunger has an inlet channel for the disperse system axially on the coupling side, from which one or more outlet channels branch off toward the nozzle-side end.

Bevorzugt wird, daß der Ausgangskanal oder die Ausgangskanäle entweder winklig abgezweigt zum Einlaßkanal so angeordnet sind, daß das disperse System radial bis tangential auf die als Hohlraum ausgestaltete Innenwand des Sprühkopfs trifft oder parallel zur Achse versetzt zum Einlaßkanal so angeordnet sind, daß das disperse System axial auf die als Hohlraum ausgestaltete Innenwand des Sprühkopfs trifft.It is preferred that the output channel or the output channels are either branched at an angle to the inlet channel so that the disperse system strikes the inner wall of the spray head designed as a cavity radially or tangentially, or are offset parallel to the axis to the inlet channel so that the disperse system is axial meets the inner wall of the spray head, which is designed as a cavity.

Alternativ weist der Stempel ein oder mehrere Kanäle auf, die von der Kupplungsseite des Stempels angehend parallel versetzt zur Achse durch den Stempel hindurch verlaufend, seitlich der Stempelspitze in den Hohlraum des Sprühkopfes münden.Alternatively, the plunger has one or more channels which, starting from the coupling side of the plunger and running parallel to the axis through the plunger, open to the side of the plunger tip into the cavity of the spray head.

Es ist zweckmäßig, daß das düsenseitige Ende des Stempels eine Kegelform mit einem Kegelwinkel von 15° bis 90° aufweist, daß die Innenseite der Lochdüse der Stempelspitze angepaßt ist und daß der Stempel in seiner Längsrichtung über eine Feder so beweglich ausgestaltet ist, daß er während des Sprühvorgangs durch den Sprühdruck aus dem Sprühkopf zurückgedrückt wird, und sobald der Sprühdruck auf ein unterwünschtes Maß zurückgeht, bleibend vor die Öffnung der Lochdüse geschoben wird.It is expedient that the end of the stamp on the nozzle side has a conical shape with a cone angle of 15 ° to 90 °, that the inside of the perforated nozzle is adapted to the punch tip and that the punch is designed so that it can move in the longitudinal direction via a spring so that it is pushed back out of the spray head by the spray pressure during the spraying process, and as soon as the spray pressure drops to an undesirable level the opening of the perforated nozzle is pushed.

Vorteilhafterweise ist die Kupplung als Halterung der Sprühvorrichtung ausgestaltet.The coupling is advantageously designed as a holder for the spraying device.

Vorzugsweise weist die Kupplung axial einen Durchlaßkanal für das disperse System auf und ist entweder axial oder radial mit dem Gehäuse der Sprühvorrichtung verbunden.The coupling preferably has an axial passage for the disperse system and is connected either axially or radially to the housing of the spray device.

Zweckmäßigerweise ist die Kupplung als Schraub- oder Steckkupplung, vorzugsweise als Steckkupplung, ausgestaltet.The coupling is expediently designed as a screw or plug-in coupling, preferably as a plug-in coupling.

Mit der erfindungsgemäßen Vorrichtung können grobkörnige Stoffe und zur Verharzung neigende Polymere, insbesondere graphithaltige Dispersionen, welche Graphit mit einer Korngröße im Bereich von 25 bis 125 µm enthalten, auf Walzen beim Warmwalzen von Blechen, Profilen oder anderen Formteilen ohne Verminderung des Durchsatzes versprüht werden.With the device according to the invention, coarse-grained substances and polymers with a tendency to resinification, in particular graphite-containing dispersions, which contain graphite with a grain size in the range from 25 to 125 μm, can be sprayed on rollers during the hot rolling of sheets, profiles or other molded parts without reducing the throughput.

Entweder in rhythmischer Folge oder sobald der Durchsatz am dispersen System auf ein unerwünschtes Maß zurückgeht wird der Stempel kurzzeitig aus dem Hohlraum in den Sprühkopf an die Lochdüse gepreßt, wodurch, die Lochdüse gegebenenfalls verstopfende Partikel durch diese herausgepreßt werden. Nach dem Zurückziehen des Stempels ist die Lochdüse wieder voll wirksam.Either in rhythmic order or as soon as the throughput on the disperse system drops to an undesirable level, the plunger is pressed briefly from the cavity into the spray head at the perforated nozzle, which means that the perforated nozzle is pressed out of any clogged particles. After the punch has been withdrawn, the perforated nozzle is fully effective again.

Für derartige Suspensionen werden vorzugsweise Lochdüsen mit Düsenöffnungen von 0,5 bis 1,0 mm angewendet. Die Sprühvorrichtung kann auch für andere bekannte disperse Systeme angewendet werden, die beispielsweise bei der Berührung mit Luft zur Verharzung neigen oder aufgrund der Teilchengröße des Dispersums mit bekannten Vorrichtungen bisher schlecht oder nicht versprüht werden konnten. Der Stempel kann so gesteuert werden, daß dieser nach Abstellen der Zufuhr am dispersen System in die Lochdüse gepreßt wird, diese zugleich reinigt und sicher verschließt. Bei erneuter Zufuhr am dispersen System kann der Stempel wieder in den Sprühkopf zurückgezogen werden.For such suspensions, perforated nozzles with nozzle openings of 0.5 to 1.0 mm are preferably used. The spraying device can also be used for other known disperse systems which, for example, tend to resinify when in contact with air or which, up to now, have been difficult or impossible to spray with known devices due to the particle size of the disperse. The stamp can be controlled in such a way that it is pressed into the perforated nozzle after the supply on the disperse system has been switched off, and at the same time cleans and securely closes it. When the disperse system is fed again, the stamp can be pulled back into the spray head.

Die Erfindung wird nachstehend anhand von Zeichnungen beispielsweise näher erläutert. Es zeigen

Fig. 1
im Axialschnitt eine erste Ausführungsform der Vorrichtung,
Fig. 2
im Axialschnitt eine zweite Ausführungsform der Vorrichtung,
Fig. 3
im Axialschnitt eine dritte Ausführungsform der Vorrichtung,
Fig. 4
im Axialschnitt eine vierte Ausführungsform der Vorrichtung,
Fig. 5
im Axialschnitt die Ausführungsform der Vorrichtung von Fig. 1 mit radial angeschlossener Kupplung,
Fig. 6
im Axialschnitt eine Variante der Ausführungsform von Fig. 5.
The invention is explained in more detail below with reference to drawings, for example. Show it
Fig. 1
in axial section a first embodiment of the device,
Fig. 2
in axial section a second embodiment of the device,
Fig. 3
in axial section a third embodiment of the device,
Fig. 4
in axial section a fourth embodiment of the device,
Fig. 5
in axial section the embodiment of the device of FIG. 1 with a radially connected coupling,
Fig. 6
in axial section a variant of the embodiment of FIG. 5.

Gemäß Fig. 1 ist in einem Gehäuse 11, das auf einer Seite mit einem Sprühkopf 5 und auf der Gegenseite mit einer Kupplung 9 verbunden ist, ein über eine Feder 8 in der Längsrichtung bewegbarer Stempel 1 angeordnet.1, in a housing 11, which is connected on one side to a spray head 5 and on the opposite side to a coupling 9, is arranged a plunger 1 which can be moved in the longitudinal direction via a spring 8.

Der Stempel 1 weist auf der Kupplungsseite einen Einlaßkanal 3 für das disperse System auf, von dem zum düsenseitigen Ende hin, gemäß Fig. 1, zwei Ausgangskanäle 4 abzweigen. In der Ausführungsform von Fig. 1 kann die Anzahl der Ausgangskanäle 4 zwischen eins und zehn, vorzugsweise zwischen drei und sechs, variieren. Die Ausgangskanäle 4 sind vorzugsweise als Bohrungen mit Durchmessern zwischen 0,5 mm und 3 mm ausgelegt.The plunger 1 has an inlet channel 3 for the disperse system on the coupling side, from which two outlet channels 4 branch off towards the end on the nozzle side, as shown in FIG. 1. In the embodiment of FIG. 1, the number of output channels 4 can vary between one and ten, preferably between three and six. The output channels 4 are preferably designed as bores with diameters between 0.5 mm and 3 mm.

Die Ausgangskanäle 4 können dabei gemäß Fig. 2 in einem rechten Winkel bezogen auf die Achse der Sprühvorrichtung oder gemäß Fig. 1 in einem beliebigen Winkel zur Achse oder gemäß Fig. 4 parallel versetzt zur Achse, angeordnet sein.The output channels 4 can be arranged according to FIG. 2 at a right angle with respect to the axis of the spraying device or according to FIG. 1 at any angle to the axis or according to FIG. 4 offset parallel to the axis.

Durch die unterschiedliche Ausgestaltung dieser als Bohrungen ausgelegten Ausgangskanäle 4 kann erreicht werden, daß das disperse System radial bis tangential oder axial auf die als Hohlraum 2 ausgestaltete Innenwand des Sprühkopfs 5 trifft.Due to the different design of these output channels 4, which are designed as bores, it can be achieved that the disperse system strikes the inner wall of the spray head 5 designed as a cavity 2 radially to tangentially or axially.

Bei der Ausführungsform von Fig. 3 sind im Stempel 1 parallel versetzt zur Achse ein oder mehrere, zweckmäßigerweise ein bis zehn, vorzugsweise drei bis sechs, Kanäle 6 vorgesehen, die von der Kupplungsseite des Stempels 1 ausgehend seitlich der Stempelspitze in den Hohlraum 2 des Sprühkopfes 5 münden. Auch diese Kanäle 6 sind als Bohrungen ausgelegt, deren Durchmesser zwischen 0,5 mm und 3 mm variieren.In the embodiment of FIG. 3, one or more, expediently one to ten, preferably three to six, channels 6 are provided in the plunger 1 parallel to the axis, starting from the coupling side of the plunger 1 and starting from the side of the plunger tip into the cavity 2 of the spray head 5 mouth. These channels 6 are also designed as bores whose diameters vary between 0.5 mm and 3 mm.

Allen Ausführungsformen gemeinsam ist, daß das düsenseitige Ende des Stempels 1 eine kegelförmige Spitze aufweist. Der Kegelwinkel beträgt 15° bis 90°. Die Lochdüse 7 ist gegen das Gehäuseinnere in ihrer Form dem Stempel 1 angepaßt. Die Öffnung der Lochdüse 7 kann Flachstrahl- oder Rundstrahlform haben. Der Durchmesser der Lochdüse 7 richtet sich nach dem erwünschten Durchsatz und Sprühbild und beträgt 0,3 mm bis 4 mm.All embodiments have in common that the nozzle-side end of the stamp 1 has a conical tip. The cone angle is 15 ° to 90 °. The shape of the perforated nozzle 7 is adapted to the stamp 1 against the interior of the housing. The opening of the perforated nozzle 7 can be flat jet or omnidirectional to have. The diameter of the perforated nozzle 7 depends on the desired throughput and spray pattern and is 0.3 mm to 4 mm.

Der Stempel 1 ist in seiner Längsrichtung über die Feder 8 so beweglich ausgestaltet, daß er während des Sprühvorgangs durch den Sprühdruck aus dem Sprühkopf 5 zurückgedrückt wird. Sobald der Sprühdruck auf ein unerwünschtes Maß zurückgeht, wird der Stempel 1 bleibend vor die Öffnung der Lochdüse 7 geschoben.The plunger 1 is designed to be movable in the longitudinal direction via the spring 8 in such a way that it is pressed back from the spray head 5 by the spray pressure during the spraying process. As soon as the spray pressure drops to an undesirable level, the plunger 1 is pushed permanently in front of the opening of the perforated nozzle 7.

Die Kupplung 9 ist als Steck- oder Schraubkupplung ausgestaltet und hat einen axialen Durchlaßkanal 10 für das disperse System. Die Kupplung 9 kann gemäß Fig. 1 bis 4 axial mit der Sprühvorrichtung oder gemäß Fig. 5 radial mit der Sprühvorrichtung verbunden sein. Ist die Kupplung 9 gemäß der Ausführungsform von Fig. 5 radial mit der Sprühvorrichtung verbunden, so kann, wie in Fig. 6 gezeigt ist, das disperse System ohne Kanäle im Stempel zu passieren, direkt in den Hohlraum 2 des Sprühkopfes 5 eingeführt werden.The coupling 9 is designed as a plug or screw coupling and has an axial passage channel 10 for the disperse system. The coupling 9 can be axially connected to the spray device according to FIGS. 1 to 4 or radially to the spray device according to FIG. 5. If the coupling 9 according to the embodiment of FIG. 5 is radially connected to the spray device, then, as shown in FIG. 6, the disperse system can pass directly into the cavity 2 of the spray head 5 without passing through channels in the stamp.

Die Kupplung 9 kann die Halterung der Sprühvorrichtung bilden, was eine geringe Einbauhöhe ermöglicht und insbesondere den Einbau der Düsenvorrichtungen in Walzgerüsten begünstigt, die nur sehr spärlich Platz für Zusatzeinbauten bieten.The coupling 9 can form the holder of the spraying device, which enables a low installation height and in particular favors the installation of the nozzle devices in rolling stands, which offer very little space for additional installations.

Wenn die Kupplung 9 als Steckkupplung ausgebildet ist, kann sie mit einem Handgriff mit einer radialen Bewegung in ein Gegengehäuse 12 eines Speiseorgans 13 eingesteckt und radial verriegelt werden.If the coupling 9 is designed as a plug-in coupling, it can be inserted with a handle with a radial movement into a counter housing 12 of a feed element 13 and locked radially.

Die Sprühvorrichtung wird über das Speiseorgan 13, das als Speiserohr oder als Verteiler ausgestaltet ist, über an sich bekannte Pumpvorrichtungen mit dem dispersen System beschickt. Die dabei angewendeten Drucke liegen im Bereich von 5 bis 100 bar, meist zwischen 20 und 80 bar.The spray device is fed via the feed element 13, which is designed as a feed pipe or as a distributor, via known pump devices with the disperse system. The pressures used are in the range from 5 to 100 bar, usually between 20 and 80 bar.

Claims (9)

Vorrichtung zum Versprühen von dispersen Systemen mit einem Sprühkopf (5), der eine Lochdüse (7) aufweist, mit einem Einlaß für disperse Systeme, mit einem im Inneren des Sprühkopfes (5) vor die Öffnung der Lochdüse (7) schiebbaren Stempel (1) und mit einer Kupplung (9) für eine Verbindung mit einem Speiseorgan (12, 13), dadurch gekennzeichnet, daß der Stempel (1) ein oder mehrere Kanäle (3, 4; 6) für das disperse System aufweist, die von der Kupplungsseite des Stempels (1) ausgehen, durch den Stempel (1) hindurchgehen und in den Hohlraum (2) des Sprühkopfes (5) münden.Device for spraying disperse systems with a spray head (5) which has a perforated nozzle (7), with an inlet for disperse systems, with a plunger (1) which can be pushed inside the spray head (5) in front of the opening of the perforated nozzle (7) and with a coupling (9) for a connection to a feed element (12, 13), characterized in that the plunger (1) has one or more channels (3, 4; 6) for the disperse system which extend from the coupling side of the Go out stamp (1), go through the stamp (1) and open into the cavity (2) of the spray head (5). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Stempel (1) axial auf der Kupplungsseite einen Einlaßkanal (3) für das disperse System aufweist, von dem zum düsenseitigen Ende hin ein oder mehrere Ausgangskanäle (4) abzweigen.Device according to Claim 1, characterized in that the plunger (1) has an inlet channel (3) axially on the coupling side for the disperse system, from which one or more outlet channels (4) branch off towards the nozzle-side end. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Ausgangskanal (4) oder die Ausgangskanäle (4) entweder winklig abgezweigt zum Einlaßkanal (3) so angeordnet sind, daß das disperse System radial bis tangential auf die als Hohlraum (2) ausgestaltete Innenwand des Sprühkopfs (5) trifft oder parallel zur Achse versetzt zum Einlaßkanal (3) so angeordnet sind, daß das disperse System axial auf die als Hohlraum (2) ausgestaltete Innenwand des Sprühkopfs (5) trifft.Apparatus according to claim 1 or 2, characterized in that the output channel (4) or the output channels (4) are either branched at an angle to the inlet channel (3) so that the disperse system is radial to tangential to the inner wall designed as a cavity (2) of the spray head (5) or offset parallel to the axis to the inlet channel (3) so that the disperse system axially strikes the inner wall of the spray head (5) designed as a cavity (2). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Stempel (1) ein oder mehrere Kanäle (6) aufweist, die von der Kupplungsseite des Stempels (1) ausgehend parallel versetzt zur Achse durch den Stempel (1) hindurch verlaufend, seitlich der Stempelspitze in den Hohlraum (2) des Sprühkopfes (5) münden.Apparatus according to claim 1, characterized in that the stamp (1) has one or more channels (6) which, starting from the coupling side of the stamp (1), run parallel to the axis through the stamp (1) and to the side of the stamp tip in open the cavity (2) of the spray head (5). Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das düsenseitige Ende des Stempels (1) eine Kegelform mit einem Kegelwinkel von 15° bis 90° aufweist, daß die Innenseite der Lochdüse (7) der Stempelspitze angepaßt ist und daß der Stempel (1) in seiner Längsrichtung über eine Feder (8) so beweglich ausgestaltet ist, daß er während des Sprühvorgangs durch den Sprühdruck aus dem Sprühkopf (5) zurückgedrückt wird und sobald der Sprühdruck auf ein unerwünschtes Maß zurückgeht, bleibend vor die Öffnung der Lochdüse (7) geschoben wird.Device according to one of claims 1 to 4, characterized in that the nozzle-side end of the stamp (1) has a conical shape with a cone angle of 15 ° to 90 °, that the inside of the perforated nozzle (7) is adapted to the stamp tip and that the stamp (1) is designed to be movable in its longitudinal direction via a spring (8) so that it is pushed back by the spray pressure from the spray head (5) during the spraying process and as soon as the spray pressure drops to an undesirable level, remaining in front of the opening of the perforated nozzle ( 7) is pushed. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Kupplung (9) als Halterung der Sprühvorrichtung ausgestaltet ist.Device according to one of claims 1 to 5, characterized in that the coupling (9) is designed as a holder for the spraying device. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Kupplung (9) axial einen Durchlaßkanal (10) für das disperse System aufweist und entweder axial oder radial mit einem Gehäuse (11) der Sprühvorrichtung verbunden ist.Apparatus according to claim 6, characterized in that the coupling (9) axially has a passage channel (10) for the disperse system and is connected either axially or radially to a housing (11) of the spray device. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Kupplung (9) als Schraub- oder Steckkupplung ausgestaltet ist.Apparatus according to claim 6 or 7, characterized in that the coupling (9) is designed as a screw or plug coupling. Verwendung der Vorrichtung nach einem der Ansprüche 1 bis 8 zum Versprühen von graphithaltigen Dispersionen, welche Graphit mit einer Korngröße im Bereich von 25 bis 150 µm enthalten, beim Besprühen von Walzen bei der Warmumformung von Blechen, Hohlprofilen und Profilen.Use of the device according to one of Claims 1 to 8 for spraying graphite-containing dispersions which contain graphite with a grain size in the range from 25 to 150 µm, when spraying rollers during the hot forming of sheets, hollow profiles and profiles.
EP91104899A 1990-04-27 1991-03-27 Device for spraying a dispersion Expired - Lifetime EP0453801B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH144190 1990-04-27
CH1441/90 1990-04-27

Publications (3)

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EP0453801A2 true EP0453801A2 (en) 1991-10-30
EP0453801A3 EP0453801A3 (en) 1991-12-11
EP0453801B1 EP0453801B1 (en) 1995-02-01

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ID=4210534

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Application Number Title Priority Date Filing Date
EP91104899A Expired - Lifetime EP0453801B1 (en) 1990-04-27 1991-03-27 Device for spraying a dispersion

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US (2) US5129580A (en)
EP (1) EP0453801B1 (en)
JP (1) JPH0550119A (en)
AT (1) ATE117917T1 (en)
CA (1) CA2041208A1 (en)
DE (1) DE59104453D1 (en)
ES (1) ES2067074T3 (en)

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DE9208796U1 (en) * 1992-07-01 1992-10-08 Suttner GmbH & Co KG, 4800 Bielefeld Jet nozzle for high-pressure cleaning equipment
DE19957055A1 (en) * 1999-11-27 2001-05-31 Mika Heiztechnik Gmbh Supplier of liquid or gas fuel to combustion chamber, with operating element for sealing element fitted in cavity in jet body

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JP2870986B2 (en) * 1990-05-23 1999-03-17 品川白煉瓦株式会社 Immersion nozzle replacement device
GB9409571D0 (en) * 1994-05-13 1994-07-06 Chicken Robert R Self cleaning screen washer
FR2733705B1 (en) * 1995-05-05 1997-06-13 Vesuvius France Sa DEVICE AND METHOD FOR CHANGING A CONTINUOUS CASTING TUBE OF A STEEL DISTRIBUTOR
EP0820825A4 (en) * 1996-02-06 1999-03-03 Shinagawa Refractories Co Immersion nozzle replacement apparatus
US5911363A (en) * 1997-03-10 1999-06-15 Spratronics, Inc. Vehicle mounted spray apparatus and method
DE19818028C2 (en) * 1997-04-22 2001-11-29 Toshiba Ceramics Co Integrated immersion nozzle and process for its manufacture
US6996956B2 (en) * 2001-01-12 2006-02-14 Sealed Air Corporation (Us) Fluid dispenser having improved cleaning solvent delivery system
US6811059B2 (en) * 2003-02-24 2004-11-02 Sealed Air Corporation (Us) Self-cleaning fluid dispenser
CN103639081B (en) * 2013-10-28 2017-01-25 重庆新陆农业开发有限公司 Flow-variable spray head

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US2017467A (en) * 1934-11-23 1935-10-15 Leavitt R Loomis Spray nozzle
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DE19957055A1 (en) * 1999-11-27 2001-05-31 Mika Heiztechnik Gmbh Supplier of liquid or gas fuel to combustion chamber, with operating element for sealing element fitted in cavity in jet body
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Also Published As

Publication number Publication date
ES2067074T3 (en) 1995-03-16
US5129580A (en) 1992-07-14
CA2041208A1 (en) 1991-10-28
EP0453801B1 (en) 1995-02-01
DE59104453D1 (en) 1995-03-16
JPH0550119A (en) 1993-03-02
ATE117917T1 (en) 1995-02-15
US5114123A (en) 1992-05-19
EP0453801A3 (en) 1991-12-11

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