EP0453801B1 - Device for spraying a dispersion - Google Patents
Device for spraying a dispersion Download PDFInfo
- Publication number
- EP0453801B1 EP0453801B1 EP91104899A EP91104899A EP0453801B1 EP 0453801 B1 EP0453801 B1 EP 0453801B1 EP 91104899 A EP91104899 A EP 91104899A EP 91104899 A EP91104899 A EP 91104899A EP 0453801 B1 EP0453801 B1 EP 0453801B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plunger
- coupling
- spray head
- spray
- nozzle
- 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
Links
- 238000005507 spraying Methods 0.000 title claims abstract description 17
- 239000006185 dispersion Substances 0.000 title claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 50
- 230000008878 coupling Effects 0.000 claims abstract description 30
- 238000010168 coupling process Methods 0.000 claims abstract description 30
- 238000005859 coupling reaction Methods 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 13
- 239000010439 graphite Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 239000000314 lubricant Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001020 rhythmical effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- 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
- a spray device in which in a spray head between the inlet of a disperse system and a perforated nozzle, a screen insert and a Wiping device are provided. This is to ensure that coarse-grained constituents of the disperse system, which can clog the nozzle, are retained and forcibly stripped off.
- an apparatus which comprises a spray head which has a perforated nozzle, an inlet for disperse systems, a coupling for a connection to a feed element, and a plunger which can be pushed inside the spray head in front of the opening of the perforated nozzle , which has one or more channels which start from the coupling side of the plunger, pass through the plunger and open into the cavity of the spray head.
- the plunger has an inlet channel for the disperse system axially on the coupling side, from which one or more outlet channels branch off towards the nozzle-side end.
- a device is preferably used in which the outlet channel or channels are either branched at an angle to the inlet channel in such a way that the disperse system strikes the inner wall of the spray head, which is designed as a cavity, radially or tangentially, or is arranged offset to the inlet channel parallel to the axis such that the disperse system axially strikes the inner wall of the spray head designed as a cavity.
- a device in which the stamp has one or more channels which, starting from the coupling side of the stamp and running parallel to the axis through the stamp, open into the cavity of the spray head at the side of the punch tip.
- the inside of the perforated nozzle is adapted to the stamp tip and the stamp is designed to be movable in its 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, is pushed permanently in front of the opening of the perforated nozzle.
- a device is advantageously used in which the coupling is designed as a holder for the spraying device.
- a device is preferably used in which the coupling has an axial passage for the disperse system and is connected either axially or radially to the housing of the spraying device.
- the coupling is expediently designed as a screw or plug-in coupling, preferably as a plug-in coupling.
- coarse-grained substances and resin-prone polymers in particular graphite-containing dispersions, which contain graphite with a grain size in the range from 25 to 150 »m, can be sprayed on rollers when hot-rolling sheet metal, profiles or other molded parts without reducing the throughput.
- the plunger 1 has an inlet duct 3 for the disperse system on the coupling side, from which two outlet ducts 4 branch off towards the nozzle-side end, 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 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 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 connected radially 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 spray device, which enables a low installation height and in particular favors the installation of the nozzle devices in roll stands, which offer only very little space for additional installations.
- the spraying 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, mostly between 20 and 80 bar.
Landscapes
- Nozzles (AREA)
- Coating Apparatus (AREA)
- Manipulator (AREA)
- Catching Or Destruction (AREA)
Abstract
Description
Die Erfindung bezieht sich auf das Besprühen von Walzen bei der Warmumformung von Blechen, Hohlprofilen und Profilen mit graphithaltigen Dispersionen mit einer Korngröße im Bereich von 25 bis 150 »m.The invention relates to the spraying of rolls in the hot forming of sheets, hollow profiles and profiles with graphite-containing dispersions with a grain size in the range from 25 to 150 »m.
Aus der FR-PS 569 852 ist eine Sprühvorrichtung bekannt, bei der in einem rohrförmigen Sprühkopf, der Durchgangskanäle aufweist, ein Reinigungsorgan verschiebbar gelagert ist, 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. Die Reinigung soll dabei ohne Unterbrechung der normalen Funktionen des Sprühkopfes erfolgen.From FR-PS 569 852 a spray device is known, in which a cleaning member is slidably mounted in a tubular spray head which has through channels, which is also connected to a tip, which in a relative movement of the cleaning member to the spray head in an opening of the Perforated nozzle is slidable to clean this opening. The cleaning should be carried out without interrupting the normal functions of the spray head.
In der US-A-2 794 683 ist weiterhin ein Sprühventil beschrieben, welches als Nadelventil ausgebildet ist. 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.In US-A-2 794 683 a spray valve is further described which is designed as a needle valve. 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 which is displaceable inside the spray head has at its head end a cylindrical or conical section which can be inserted through the perforated disk into the opening of the perforated nozzle in order to push dirt out of this opening of the perforated nozzle.
Aus der DE-C-27 24 931 ist eine Sprühvorrichtung bekannt, bei der in einem Sprühkopf zwischen dem Einlaß eines dispersen Systems und einer 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-C-27 24 931 a spray device is known in which in a spray head between the inlet of a disperse system and a perforated nozzle, a screen insert and a Wiping device are provided. This is to ensure that coarse-grained constituents of the disperse system, which can clog the nozzle, are retained and forcibly stripped off.
Beim Besprühen von Walzen bei der Warmumformung von Blechen, Hohlprofilen (Rohren) oder Profilen mit graphithaltigen Dispersionen über einen längeren Zeitraum hinweg haben sich die genannten Sprühvorrichtungen als nicht tauglich erwiesen, weil entweder der Siebeinsatz regelmässig verstopft oder aber der Ein/Ausbau aufwendig und langwierig ist.When spraying rolls during the hot forming of sheets, hollow profiles (tubes) or profiles with graphite-containing dispersions over a long period of time, the spray devices mentioned have not proven to be suitable because either the screen insert is regularly blocked or the installation / removal is complex and tedious .
Suspensionen, die Graphit in einer oberen Korngröße von 25 bis 150 »m als Dispersum und eine Flüssigkeit als Dispersionsmittel enthalten und insbesondere solche Suspensionen, die neben dem Dispersionsmittel noch Anteile an Stabilisatoren, Dispersionshilfsmittel und Polymeren, beispielsweise gemäß der DE-A-24 50 716, enthalten, können 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 which contain graphite in an upper grain size of 25 to 150 »m as a disperse and a liquid as a dispersing agent and in particular those suspensions which, in addition to the dispersing agent, also contain proportions of stabilizers, dispersion auxiliaries and polymers, for example according to DE-A-24 50 716 , can 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 leicht reinigbare und schnell austauschbare Vorrichtung vorzuschlagen, mit der Walzen bei der Warmumformung von Blechen, Hohlprofilen und Profilen mit graphithaltigen Dispersionen mit einer Korngröße im Bereich von 25 bis 150 »m ohne Verminderung des Durchsatzes über längere Zeit besprüht werden können.The invention has for its object to provide an easily cleanable and quickly replaceable device with which rollers are sprayed with graphite-containing dispersions with a grain size in the range of 25 to 150 »m over a long period of time without reducing the throughput during the hot forming of sheets, hollow profiles and profiles can.
Diese Aufgabe wird dadurch gelöst, daß eine Vorrichtung verwendet wird, die einen Sprühkopf, der eine Lochdüse aufweist, einen Einlaß für disperse Systeme, eine Kupplung für eine Verbindung mit einem Speiseorgan, und einen im Inneren des Sprühkopfes vor die Öffnung der Lochdüse schiebbaren Stempel umfaßt, der ein oder mehrere Kanäle aufweist, die von der Kupplungsseite des Stempels ausgehen, durch den Stempel hindurchgehen und in den Hohlraum des Sprühkopfes münden.This object is achieved in that an apparatus is used which comprises a spray head which has a perforated nozzle, an inlet for disperse systems, a coupling for a connection to a feed element, and a plunger which can be pushed inside the spray head in front of the opening of the perforated nozzle , which has one or more channels which start from the coupling side of the plunger, pass through the plunger and open into the cavity of the spray head.
Die vorgeschlagene Vorrichtung ist an sich aus der US-A-2 017467 bekannt. Diese bekannte Vorrichtung wurde jedoch bislang nur zum Versprühen von Flüssigkeiten verwendet. Das gleiche gilt auch für die aus EP-A-0 283 137 bekannte Sprühvorrichtung.The proposed device is known per se from US-A-2 017467. However, this known device has so far only been used for spraying liquids. The same also applies to the spray device known from EP-A-0 283 137.
Es ist vorteilhaft, eine Vorrichtung zu verwenden, bei welcher 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 to use a device in which the plunger has an inlet channel for the disperse system axially on the coupling side, from which one or more outlet channels branch off towards the nozzle-side end.
Bevorzugt wird eine Vorrichtung verwendet, bei welcher 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.A device is preferably used in which the outlet channel or channels are either branched at an angle to the inlet channel in such a way that the disperse system strikes the inner wall of the spray head, which is designed as a cavity, radially or tangentially, or is arranged offset to the inlet channel parallel to the axis such that the disperse system axially strikes the inner wall of the spray head designed as a cavity.
Alternativ kann eine Vorrichtung verwendet werden, bei welcher der Stempel ein oder mehrere Kanäle aufweist, 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, a device can be used in which the stamp has one or more channels which, starting from the coupling side of the stamp and running parallel to the axis through the stamp, open into the cavity of the spray head at the side of the punch tip.
Es ist zweckmäßig eine Vorrichtung zu verwenden bei welcher das düsenseitige Ende des Stempels eine Kegelform mit einem Kegelwinkel von 15° bis 90° aufweist, die Innenseite der Lochdüse der Stempelspitze angepaßt ist und 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 to use a device in which the nozzle-side end of the stamp has a conical shape with a cone angle of 15 ° to 90 °, the inside of the perforated nozzle is adapted to the stamp tip and the stamp is designed to be movable in its 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, is pushed permanently in front of the opening of the perforated nozzle.
Vorteilhafterweise wird eine Vorrichtung verwendet, bei welcher die Kupplung als Halterung der Sprühvorrichtung ausgestaltet ist.A device is advantageously used in which the coupling is designed as a holder for the spraying device.
Vorzugsweise wird eine Vorrichtung verwendet, bei der die Kupplung axial einen Durchlaßkanal für das disperse System aufweist und entweder axial oder radial mit dem Gehäuse der Sprühvorrichtung verbunden ist.A device is preferably used in which the coupling has an axial passage for the disperse system and is connected either axially or radially to the housing of the spraying 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.
Durch Verwendung der Vorrichtung können grobkörnige Stoffe und zur Verharzung neigende Polymere, insbesondere graphithaltige Dispersionen, welche Graphit mit einer Korngröße im Bereich von 25 bis 150 »m enthalten, auf Walzen beim Warmwalzen von Blechen, Profilen oder anderen Formteilen ohne Verminderung des Durchsatzes versprüht werden.By using the device, coarse-grained substances and resin-prone polymers, in particular graphite-containing dispersions, which contain graphite with a grain size in the range from 25 to 150 »m, can be sprayed on rollers when hot-rolling sheet metal, profiles or other molded parts without reducing the throughput.
Der Stempel wird entweder in rhythmischer Folge oder sobald der Durchsatz am dispersen System auf ein unerwünschtes Maß zurückgeht kurzzeitig aus dem Hohlraum in den Sprühkopf an die Lochdüse gepreßt, wodurch Partikel, die die Lochdüse verstopfen, durch die Lochdüse herausgepreßt werden. Nach dem Zurückziehen des Stempels ist die Lochdüse wieder voll wirksam.The stamp is either in rhythmic order or as soon as the throughput on the disperse system to an undesirable level returns briefly from the cavity in the spray head to the perforated nozzle, whereby particles that clog the perforated nozzle are pressed out through the perforated nozzle. After withdrawing the stamp, the perforated nozzle is fully effective again.
Für derartige Suspensionen werden vorzugsweise Lochdüsen mit Düsenöffnungen von 0,5 bis 1,0 mm angewendet. 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 stamp can be controlled in such a way that it is pressed into the perforated nozzle after switching off the supply on the disperse system, and at the same time cleans it and closes it securely. When the disperse system is fed again, the stamp can be pulled back into the spray head.
Die Erfindung wird nachstehend anhand von Zeichnungen näher erläutert. Es zeigen
- Fig. 1
- im Axialschnitt eine erste Ausführungsform der Vorrichtung zum Versprühen graphithaltiger Dispersionen,
- Fig. 2
- im Axialschnitt eine zweite Ausführungsform der Vorrichtung zum Versprühen graphithaltiger Dispersionen,
- Fig. 3
- im Axialschnitt eine dritte Ausführungsform der Vorrichtung zum Versprühen graphithaltiger Dispersionen,
- Fig. 4
- im Axialschnitt eine vierte Ausführungsform der Vorrichtung zum Versprühen graphithaltiger Dispersionen,
- 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.
- Fig. 1
- in axial section a first embodiment of the device for spraying graphite-containing dispersions,
- Fig. 2
- in axial section a second embodiment of the device for spraying graphite-containing dispersions,
- Fig. 3
- in axial section a third embodiment of the device for spraying graphite-containing dispersions,
- Fig. 4
- in axial section a fourth embodiment of the device for spraying graphite-containing dispersions,
- 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 is arranged in a
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
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
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
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,
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
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
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
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
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
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 spraying device is fed via the
Claims (8)
- Use of a device- with a spray head (5) which has a perforated nozzle (7),- with an inlet for disperse systems,- with a coupling (9) for a connection to a supply element (12, 13), and- with a plunger (1) movable inside the spray head (5) upstream of the orifice of the perforated nozzle (7), which plunger has one or more ducts (3, 4; 6) for the disperse system which start from the coupling side of the plunger (1), pass through the plunger (1) and open into the hollow chamber (2) of the spray head (5),for spraying rolls in the hot-working of sheets, hollow sections and sections with graphite-containing dispersions which contain graphite with a grain size in the range from 25 to 150 »m.
- Use of a device according to Claim 1 in which the plunger (1) has an inlet duct (3) for the disperse system axially on the coupling side, from which inlet duct one or more outlet ducts (4) branch off in the direction of the end on the nozzle side.
- Use of a device according to Claim 2, in which the outlet duct (4) or the outlet ducts (4) are arranged either branched off at an angle to the inlet duct (3) in such a way that the disperse system impinges radially to tangentially on the inner wall of the spray head (5) in the form of a hollow chamber (2), or are arranged parallel to the axis and displaced with respect to the inlet duct (3) in such a way that the disperse system impinges axially on the inner wall of the spray head (5) in the form of a hollow chamber (2).
- Use of a device according to Claim 1, in which the plunger (1) has one or more ducts (6) which, starting from the coupling side of the plunger (1) and running through the plunger (1) displaced parallel to the axis, open into the hollow chamber (2) of the spray head (5) laterally to the plunger tip.
- Use of a device according to one of Claims 1 to 4, in which the nozzle-side end of the plunger (1) has a conical form with a cone angle of 15° to 90°, the inside of the perforated nozzle (7) is matched to the plunger tip and the plunger (1) is designed in its longitudinal direction to be movable via a spring (8) in such a way that it is pressed back by the spray pressure out of the spray head (5) in the course of the spray process and as soon as the spray pressure declines to an undesirable level is pushed permanently upstream of the orifice of the perforated nozzle (7).
- Use of a device according to one of Claims 1 to 5, in which the coupling (9) is designed as a mounting of the spray device.
- Use of a device according to claim 6, in which the coupling (9) axially has a through-duct (10) for the disperse system and is either axially or radially connected to a housing (11) of the spray device.
- Use of a device according to Claim 6 or 7, in which the coupling (9) is in the form of a screw or plug-in coupling.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH144190 | 1990-04-27 | ||
| CH1441/90 | 1990-04-27 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0453801A2 EP0453801A2 (en) | 1991-10-30 |
| EP0453801A3 EP0453801A3 (en) | 1991-12-11 |
| EP0453801B1 true EP0453801B1 (en) | 1995-02-01 |
Family
ID=4210534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91104899A Expired - Lifetime EP0453801B1 (en) | 1990-04-27 | 1991-03-27 | Device for spraying a dispersion |
Country Status (7)
| Country | Link |
|---|---|
| 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) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2870986B2 (en) * | 1990-05-23 | 1999-03-17 | 品川白煉瓦株式会社 | Immersion nozzle replacement device |
| DE9208796U1 (en) * | 1992-07-01 | 1992-10-08 | Suttner GmbH & Co KG, 4800 Bielefeld | Jet nozzle for high-pressure cleaning equipment |
| 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 |
| US5942147A (en) * | 1996-02-06 | 1999-08-24 | Shinagawa Refractories Co., Ltd. | Submerged nozzle replacing device |
| 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 |
| 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 |
| 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 | A variable flow nozzle |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US876453A (en) * | 1906-02-07 | 1908-01-14 | William Henry Heard | Spray-nozzle. |
| US1007325A (en) * | 1911-05-16 | 1911-10-31 | Carl Boehme | Oil-burner tip. |
| GB191209563A (en) * | 1912-04-23 | 1912-12-19 | Henry Gardiner Atkinson | Improvements in and relating to Spraying Devices. |
| FR569852A (en) * | 1921-02-22 | 1924-04-18 | Sprayer head | |
| US1630974A (en) * | 1925-07-23 | 1927-05-31 | Shelor Olie Warren | Spray nozzle |
| US1716195A (en) * | 1927-04-28 | 1929-06-04 | American Stove Co | Vaporizer and method of making the same |
| US2017467A (en) * | 1934-11-23 | 1935-10-15 | Leavitt R Loomis | Spray nozzle |
| US2135925A (en) * | 1936-11-13 | 1938-11-08 | Tuscher Jean Edouard | Fuel injecting device for internal combustion engines |
| US2794683A (en) * | 1954-06-15 | 1957-06-04 | Ind Molasses Corp | Spraying nozzle |
| US3203629A (en) * | 1963-03-29 | 1965-08-31 | Beloit Corp | Shower nozzle |
| US3295169A (en) * | 1963-12-23 | 1967-01-03 | Ernest P Moslo | Spring-pressed shutoff for injection nozzle |
| DE2318458B2 (en) * | 1973-04-12 | 1980-09-04 | Lechler Gmbh & Co Kg, 7012 Fellbach | Device for the sealing attachment of nozzles to pipe parts |
| GB1438215A (en) * | 1974-05-08 | 1976-06-03 | Lonz Ltd | High temperature lubricant |
| JPS51125160A (en) * | 1974-06-27 | 1976-11-01 | Saito Kouki Kk | Automatically opening or closing valve gate for plastic injection molding |
| CH598888A5 (en) * | 1976-03-09 | 1978-05-12 | Concast Ag | |
| DE2724931A1 (en) * | 1976-06-21 | 1977-12-29 | Lonza Ag | DEVICE FOR SPRAYING DISPERSE SYSTEMS |
| FR2409809A1 (en) * | 1977-11-29 | 1979-06-22 | Daussan Henri Jean | MANEUVERING DEVICE FOR CASTING TUBE OR NOZZLE |
| US4381102A (en) * | 1979-10-29 | 1983-04-26 | Flo-Con Systems, Inc. | Shroud support and method for shroud engagement with teeming valve |
| GB8705482D0 (en) * | 1987-03-09 | 1987-04-15 | Ici Plc | Dispensing apparatus |
-
1991
- 1991-03-27 DE DE59104453T patent/DE59104453D1/en not_active Expired - Fee Related
- 1991-03-27 AT AT91104899T patent/ATE117917T1/en not_active IP Right Cessation
- 1991-03-27 EP EP91104899A patent/EP0453801B1/en not_active Expired - Lifetime
- 1991-03-27 ES ES91104899T patent/ES2067074T3/en not_active Expired - Lifetime
- 1991-04-16 US US07/685,919 patent/US5129580A/en not_active Expired - Fee Related
- 1991-04-23 JP JP3092362A patent/JPH0550119A/en not_active Withdrawn
- 1991-04-25 CA CA002041208A patent/CA2041208A1/en not_active Abandoned
- 1991-04-25 US US07/691,331 patent/US5114123A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59104453D1 (en) | 1995-03-16 |
| CA2041208A1 (en) | 1991-10-28 |
| ES2067074T3 (en) | 1995-03-16 |
| US5114123A (en) | 1992-05-19 |
| EP0453801A3 (en) | 1991-12-11 |
| ATE117917T1 (en) | 1995-02-15 |
| JPH0550119A (en) | 1993-03-02 |
| EP0453801A2 (en) | 1991-10-30 |
| US5129580A (en) | 1992-07-14 |
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