EP0801695B1 - Wide-angled nozzle - Google Patents

Wide-angled nozzle Download PDF

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Publication number
EP0801695B1
EP0801695B1 EP96900510A EP96900510A EP0801695B1 EP 0801695 B1 EP0801695 B1 EP 0801695B1 EP 96900510 A EP96900510 A EP 96900510A EP 96900510 A EP96900510 A EP 96900510A EP 0801695 B1 EP0801695 B1 EP 0801695B1
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EP
European Patent Office
Prior art keywords
housing
feed pipe
bulge
plane
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
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EP96900510A
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German (de)
French (fr)
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EP0801695A1 (en
Inventor
Dieter Russkamp
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Eduard Kuesters Maschinenfabrik GmbH and Co KG
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Eduard Kuesters Maschinenfabrik GmbH and Co KG
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting

Definitions

  • the invention relates to a wide jet nozzle the type corresponding to the preamble of claim 1.
  • US-A-4 347 805 has a similar construction of a wide jet nozzle.
  • the invention has for its object a generic Wide jet nozzle designed so that it does not work unilaterally and the supply of the fluid Medium with less construction effort and space requirements connected is.
  • the single feed pipe opens from above or below the wide jet nozzle, so that from the feed direction the one-sidedness is suppressed.
  • the feeder only in one place in the middle of the wide jet nozzle, is taken care that by the multiple Redirection an equalization of the outlet pressure avoiding favoritism around the center entry.
  • claims 4 and 5 serve the Equalization of fleet exit.
  • treatment liquids are meant be of any kind, except for pure water e.g. also dyeing liquid, wetting agent and other equipment fluids.
  • the broad jet nozzle designated 100 as a whole in FIG. 1 comprises an elongated housing 10 made of folded and welded sheet metal, which except one over the length of the housing 10 extending slot 30 and a feed opening 2 is closed and a rectangular cross section with an upper according to FIG. 3 Boundary wall 5, a lower boundary wall 6 and has a right and left boundary wall 4.9.
  • the housing 10 is symmetrical. From Fig. 1 it can be seen that the cross section of the Housing 10 starting from the central plane M to both ends decreased to the pressure drop in the equalize flowing fleet.
  • the housing 10 In the area of the central plane M, the housing 10 one symmetrical to the central plane M after that of the exit slot 30 facing bulge bulging 20, in the area of the feed pipe 3 on the Feed opening 2 into the interior of the bulge 20 or the Housing 10 opens.
  • the junction is vertical to the exit beam plane, which is parallel to the drawing plane in FIG. 1 is located.
  • the feed pipe 3 opens into the feed opening 2 90 ° pipe elbow 3 ', from which the feed pipe 3 is straight continues laterally and at its outside the working width located end has a connecting flange 19.
  • the housing 10 and the bulge 20 approximately rectangular cross-sections of the same Width.
  • the plan of the bulge 20 in the plane 1 is the one symmetrical to the center plane M. arranged trapezes.
  • the feed opening 2 is located in the common boundary wall 4 of the housing 10 and the bulge 20.
  • the cross section of the feed opening 2 lies mainly in the area of the bulge 20 and only to a lesser extent in the area of the housing 10. In this way, the one shown in FIG. 3 is shown large cross section of the feed pipe 3 to accommodate.
  • the upper boundary wall 5 of the housing 10 is in the area the bulge 20 cut away as is due to the lack Hatching is indicated.
  • the boundary wall 9 on the left in FIGS. 2 and 3 is tapered outwards at the ends of the housing 10 beveled, as shown in Fig. 2, so that the Internal cross section continuously narrowed and dead corners avoided are.
  • the housing 10 is also along its entire length free of internal fittings such as deflections, reinforcements and the like, so that there is no unevenness in the outlet flow can occur.
  • Below the Guide body 22 remains in the housing 10 a free Flow cross-section. The guide body 22 is flowed around and prevents that in the emerging beam in the area of Feed pipe 3 a "hole" is formed.
  • the lower boundary wall 6 has on the side of the Entry of the feed pipe 3 an outward right-angled bend that a nozzle lip 7 in shape forms a flat boundary of the outlet slot 30.
  • the right-hand boundary wall 4 of the housing 10 in FIG. 3 is pulled down in a level 8 and also closed an angled lip 11, which the nozzle lip 7 in short distance d is parallel. It forms the other limitation of the outlet slot 30.
  • Die through fine flat angled nozzle lips 7,11 the beam plane 12 of the emerging from the housing 10 flat fleet jet.
  • the ratio of nozzle lip length e for the nozzle width d should not be less than 8: 1.
  • e is the length measured in the direction of flow over which the Nozzle lips 7,11 are parallel to each other, d their lights Distance.
  • e is 18mm in one embodiment, d 2mm. So the beam should have a certain length of guide, which is conducive to its uniformity.
  • the Free edges of the nozzle lips 7, 11 should be on the trailing edge 21 sharp-edged to be exact To generate beam. This is enforced with smaller ones Fleet quantities particularly important.
  • the liquor passes through the feed pipe 3 at the feed opening 2 in the bulge 20 in the interior of the Bulge 20 and the housing 10 a. It bounces accordingly their flow direction in the feed pipe 3 13 on the left boundary wall 16 of the bulge in FIG. 3 20 in the boundary wall 9 of the housing 10 passes on and becomes because there is the only outlet option is, for the first time in the direction of arrow 13 ' redirected.
  • the fleet then bounces with its new one Flow direction at 14 on the lower boundary wall 6 and is deflected to the right in the direction of arrow 14 ' (Fig. 3).
  • the fleet encounters a narrow one Flow cross section c and bounces at 15 on the inside the lower nozzle lip 11 in order to arrow 15 ' to be redirected into the exit slot 30 by the flow cross section c again narrowed considerably.
  • the Reduction of the flow cross-section against the outlet slot 30 results in a dynamic pressure that the fleet on both sides, i.e. perpendicular to Distributed plane of Fig. 3.
  • a dynamic pressure that the fleet on both sides, i.e. perpendicular to Distributed plane of Fig. 3.
  • Redirection 13 ', 14', 15 'in association with the narrowing of the cross section there is an equalization of the outlet pressure along the exit slot, i.e. perpendicular to Drawing plane of Fig. 3.

Description

Die Erfindung bezieht sich auf eine Breitstrahldüse der dem Oberbegriff des Anspruchs 1 entsprechenden Art.The invention relates to a wide jet nozzle the type corresponding to the preamble of claim 1.

Aus der DE 25 04 856 C 3 ergibt sich eine Breitstrahldüse, bei der die Zuführung des fluiden Mediums, beispielsweise von Waschwasser für textile Warenbahnen, von einem Ende her in Richtung der Längsrichtung des Gehäuses der Breitstrahldüse erfolgt. Das Gehäuse verjüngt sich von dem Zuführende gegen das gegenüberliegende Ende hin, so daß sich der Strömungsquerschnitt verringert und der Druck über die Breite des Strahls einigermaßen konstant bleibt. Dennoch ist eine Einseitigkeit des Düsenstrahls bei dieser Ausführungsform nicht leicht zu vermeiden. Diese Einseitigkeit bedeutet einen in Seitenrichtung wirkenden Kraftangriff an der Warenbahn, der meist vermieden werden muß.DE 25 04 856 C 3 produces a wide jet nozzle, in which the supply of the fluid medium, for example washing water for textile webs, from one end in the direction of the longitudinal direction of the housing the wide jet nozzle takes place. The housing tapers from the feed end towards the opposite end out, so that the flow cross section is reduced and the pressure is fairly constant across the width of the jet remains. Nevertheless, the jet is one-sided not easy to avoid in this embodiment. This one-sidedness means one in the lateral direction acting force attack on the web, the most must be avoided.

Zu diesem Zweck sind in der DE 23 34 998 A 1 (Oberbegriff des Anspruches 1) zwei derartige Breitstrahldüsen miteinander kombiniert, die jeweils von der Warenbahnmitte bis zu einem Rand der Warenbahn reichen und bei denen die Zuführung des fluiden Mediums über jeweils ein in der Mitte einmündendes, sich in Längsrichtung der Gehäuse der beiden Breitstrahldüsen erstreckendes Zuführrohr erfolgt.For this purpose, two are in DE 23 34 998 A 1 (preamble of claim 1) such wide jet nozzles combined with each other, the each from the middle of the web to an edge of the web range and where the supply of the fluid Medium via a junction that opens in the middle in the longitudinal direction of the housing of the two wide jet nozzles extending feed pipe takes place.

Diese Ausführungsform ist aufwendig und hat konstruktive Nachteile, die mit der Notwendigkeit der Zuführung des fluiden Mediums von den beiden Seiten zusammenhängen. US-A-4 347 805 weist eine ähnliche Konstrucktion einer Breitstrahldüse auf.This embodiment is complex and constructive Disadvantages associated with the need for feeding of the fluid medium from both sides. US-A-4 347 805 has a similar construction of a wide jet nozzle.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Breitstrahldüse so auszugestalten, daß sie nicht einseitig arbeitet und die Zuführung des fluiden Mediums mit weniger baulichem Aufwand und Platzbedarf verbunden ist.The invention has for its object a generic Wide jet nozzle designed so that it does not work unilaterally and the supply of the fluid Medium with less construction effort and space requirements connected is.

Diese Aufgabe wird durch die in Anspruch 1 wiedergegebene Erfindung gelöst.This object is represented by the one in claim 1 Invention solved.

Das einzelne Zuführrohr mündet von oben oder unten in die Breitstrahldüse ein, so daß von der Zuführrichtung her die Einseitigkeit unterdrückt ist. Obwohl die Zuführung nur an einer Stelle in der Mitte der Breitstrahldüse erfolgt, ist dafür Sorge getragen, daß durch die mehrfache Umlenkung eine Vergleichmäßigung des Austrittsdruckes unter Vermeidung einer Bevorzugung der Umgebung der Mitte eintritt.The single feed pipe opens from above or below the wide jet nozzle, so that from the feed direction the one-sidedness is suppressed. Although the feeder only in one place in the middle of the wide jet nozzle, is taken care that by the multiple Redirection an equalization of the outlet pressure avoiding favoritism around the center entry.

Zur Vergleichmäßigung des Austritts nach den Rändern hin kann auch bei der Erfindung in an sich bekannter Weise vorgesehen sein, daß sich der Querschnitt des Gehäuses von der Mitte aus nach beiden Seiten hin verringert (Anspruch 2).To even out the edges can also with the invention in a conventional manner be provided that the cross section of the housing of reduced in the middle from both sides (claim 2).

Um einen ausreichenden Eintrittsquerschnitt zustandezubringen, kann das Zuführrohr in eine eigens vorgesehene Ausbuchtung des Gehäuses einmünden (Anspruch 3).In order to achieve a sufficient inlet cross-section, can the feed pipe into a specially provided Bulge bulge of the housing (claim 3).

Die Ausgestaltungen der Ansprüche 4 und 5 dienen der Vergleichmäßigung des Flottenaustritts .The embodiments of claims 4 and 5 serve the Equalization of fleet exit.

Mit dem Ausdruck "Flotte" sollen Behandlungsflüssigkeiten beliebiger Art erfaßt sein, also außer reinem Wasser z.B. auch Färbeflüssigkeit, Netzmittelflotten und sonstige Ausrüstungsflüssigkeiten.With the expression "fleet" treatment liquids are meant be of any kind, except for pure water e.g. also dyeing liquid, wetting agent and other equipment fluids.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.

  • Fig. 1 zeigt eine Ansicht der Breitstrahldüse gemäß Fig. 2 von rechts;
  • Fig. 2 zeigt eine Ansicht der Breitstrahldüse gemäß Fig. 1 von links;
  • Fig. 3 zeigt einen Schnitt nach der Linie III-III in Fig. 1 in stark vergrößertem Maßstab;
  • Fig. 4 und 5 zeigen Querschnitte nach den Linien IV-IV bzw. V-V in Fig. 1 in weniger vergrößertem Maßstab.
    • In the drawing, an embodiment of the invention is shown.
  • FIG. 1 shows a view of the broad jet nozzle according to FIG. 2 from the right;
  • FIG. 2 shows a view of the broad jet nozzle according to FIG. 1 from the left;
  • Fig. 3 shows a section along the line III-III in Figure 1 in a greatly enlarged scale.
  • 4 and 5 show cross sections along the lines IV-IV and VV in Fig. 1 on a less enlarged scale.

    • Die in Fig. 1 als Ganzes mit 100 bezeichnete Breitstrahldüse umfaßt ein längliches Gehäuse 10 aus abgekantetem und geschweißtem Blech, welches bis auf einen sich über die Länge des Gehäuses 10 erstreckenden Austrittsschlitz 30 und eine Zuführöffnung 2 geschlossen ist und einen Rechteckquerschnitt mit einer gemäß Fig. 3 oberen Begrenzungswandung 5, einer unteren Begrenzungswandung 6 und einer rechten und linken Begrenzungswandung 4,9 aufweist. Zu einer durch die Mitte der Zuführöffnung 2 verlaufenden, zur Längsrichtung des Gehäuses senkrechten Mittelebene M ist das Gehäuse 10 symmetrisch ausgebildet. Aus Fig. 1 ist ersichtlich, daß sich der Querschnitt des Gehäuses 10 von der Mittelebene M ausgehend bis zu den beiden Enden hin verringert, um den Druckabfall in der strömenden Flotte auszugleichen.The broad jet nozzle designated 100 as a whole in FIG. 1 comprises an elongated housing 10 made of folded and welded sheet metal, which except one over the length of the housing 10 extending slot 30 and a feed opening 2 is closed and a rectangular cross section with an upper according to FIG. 3 Boundary wall 5, a lower boundary wall 6 and has a right and left boundary wall 4.9. To a through the middle of the feed opening 2, perpendicular to the longitudinal direction of the housing Middle plane M, the housing 10 is symmetrical. From Fig. 1 it can be seen that the cross section of the Housing 10 starting from the central plane M to both ends decreased to the pressure drop in the equalize flowing fleet.

    Im Bereich der Mittelebene M weist das Gehäuse 10 eine zu der Mittelebene M symmetrische nach der dem Austrittsschlitz 30 abgewandten Seite hin ausladende Ausbuchtung 20 auf, in deren Bereich das Zuführrohr 3 an der Zuführöffnung 2 in das Innere der Ausbuchtung 20 bzw. des Gehäuses 10 einmündet. Die Einmündung erfolgt senkrecht zur Austrittsstrahlebene, die in Fig. 1 parallel zur Zeichenebene gelegen ist. In dem Ausführungsbeispiel umfaßt das Zuführrohr 3 einen in die Zuführöffnung 2 einmündenden 90°-Rohrkrümmer 3', von dem aus das Zuführrohr 3 geradlinig seitlich weitergeht und an seinem außerhalb der Arbeitsbreite gelegenen Ende einen Anschlußflansch 19 aufweist. Im Randbereich sind das Gehäuse 10 und das Zuführrohr 3 durch einen Steg 17 miteinander verbunden.In the area of the central plane M, the housing 10 one symmetrical to the central plane M after that of the exit slot 30 facing bulge bulging 20, in the area of the feed pipe 3 on the Feed opening 2 into the interior of the bulge 20 or the Housing 10 opens. The junction is vertical to the exit beam plane, which is parallel to the drawing plane in FIG. 1 is located. Included in the embodiment the feed pipe 3 opens into the feed opening 2 90 ° pipe elbow 3 ', from which the feed pipe 3 is straight continues laterally and at its outside the working width located end has a connecting flange 19. In the edge area are the housing 10 and the feed pipe 3 connected to each other by a web 17.

    Wie aus Fig. 3 ersichtlich ist, haben das Gehäuse 10 und die Ausbuchtung 20 etwa rechteckige Querschnitte gleicher Breite. Der Grundriß der Ausbuchtung 20 in der Ebene der Fig. 1 ist der eines zu der Mittelebene M symmetrisch angeordneten Trapezes. Die Zuführöffnung 2 befindet sich in der gemeinsamen Begrenzungswandung 4 des Gehäuses 10 und der Ausbuchtung 20. Der Querschnitt der Zuführöffnung 2 liegt zum überwiegenden Teil im Bereich der Ausbuchtung 20 und nur zu einem geringeren Teil im Bereich des Gehäuses 10. Auf diese Weise ist der aus Fig. 3 ersichtliche große Querschnitt des Zuführrohrs 3 unterzubringen. Die obere Begrenzungswandung 5 des Gehäuses 10 ist im Bereich der Ausbuchtung 20 weggeschnitten, wie es durch die fehlende Schraffur angedeutet ist. Es steht in diesem Bereich ein großer geschlossener Querschnitt für den Übertritt der Flotte aus der Ausbuchtung 20 in das Gehäuse 10 zur Verfügung, der größer ist als der Querschnitt des Zuführrohrs 3. Die Gestaltung im Bereich der Ausbuchtung 20 sorgt für eine Verlangsammung der Abströmung und eine gleichmäßige Verteilung der Flüssigkeitsmenge auf beide Seiten.As can be seen from FIG. 3, the housing 10 and the bulge 20 approximately rectangular cross-sections of the same Width. The plan of the bulge 20 in the plane 1 is the one symmetrical to the center plane M. arranged trapezes. The feed opening 2 is located in the common boundary wall 4 of the housing 10 and the bulge 20. The cross section of the feed opening 2 lies mainly in the area of the bulge 20 and only to a lesser extent in the area of the housing 10. In this way, the one shown in FIG. 3 is shown large cross section of the feed pipe 3 to accommodate. The upper boundary wall 5 of the housing 10 is in the area the bulge 20 cut away as is due to the lack Hatching is indicated. It stands in this area a large closed cross section for the passage of the Fleet from the bulge 20 into the housing 10 is available, which is larger than the cross section of the feed pipe 3. The design in the region of the bulge 20 ensures a slowdown in the outflow and an even one Distribution of the amount of liquid on both sides.

    Im Bereich der Mittelebene M entspricht die Lage der oberen Begrenzungswandung 5 der in Fig. 3 unschraffiert wiedergegebenen Lage, bei der der Innenabstand von der unteren Begrenzungswandung 6 a beträgt. Die Lage der in der äußeren Ecke 5" (Fig. 1) gelegenen Kante 5' ist in Fig. 3 ebenfalls angedeutet. Der Innenabstand zur vorderen Begrenzungswandung 6 beträgt nur mehr b, also in dem Ausführungsbeispiel etwa die Hälfte. Auf diesen Betrag hat sich dementsprechend auch der Querschnitt des Gehäuses 10 nach außen hin verringert.In the area of the central plane M the position corresponds to upper boundary wall 5 of the hatched in Fig. 3 reproduced position in which the inner distance from the lower boundary wall is 6 a. The location of the in the outer corner 5 "(FIG. 1) located edge 5 'is in Fig. 3 also indicated. The inner distance to the front Boundary wall 6 is only b, so in the embodiment about half. On this amount accordingly, the cross section of the housing 10 reduced towards the outside.

    Die in den Fig. 2 und 3 linke Begrenzungswandung 9 ist an den Enden des Gehäuses 10 nach außen zulaufend abgeschrägt, wie aus Fig. 2 ersichtlich, so daß sich der Innenquerschnitt stetig verengt und tote Ecken vermieden sind. Das Gehäuse 10 ist ferner auf seiner ganzen Länge frei von inneren Einbauten wie Umlenkungen, Verstärkungen u.dgl., so daß keine Verungleichmäßigung der Austrittsströmung eintreten kann.The boundary wall 9 on the left in FIGS. 2 and 3 is tapered outwards at the ends of the housing 10 beveled, as shown in Fig. 2, so that the Internal cross section continuously narrowed and dead corners avoided are. The housing 10 is also along its entire length free of internal fittings such as deflections, reinforcements and the like, so that there is no unevenness in the outlet flow can occur.

    Zur Reduzierung des Staudruckes im Bereich des Flotteneintritts ist in dem Gehäuse 10 an der Stelle der Einmündung des Zuführrohrs 3 auf der Seite der Austrittsdüse 30 ein Leitkörper 22 in Gestalt eines zwischen die Begrenzungswandungen 4 und 9 mit der Achse zu dieser senkrecht eingeschweißten Rohrabschnitts vorgesehen, der etwa ein Drittel bis die Hälfte des Durchmessers des Zuführrohrs 3 hat und dessen oberer Scheitel gemäß Fig. 3 mit der tiefsten Stelle des Zuführrohrs 3 fluchtet. Unterhalb des Leitkörpers 22 verbleibt in dem Gehäuse 10 ein freier Strömungsquerschnitt. Der Leitkörper 22 wird umströmt und verhindert, daß in dem austretenden Strahl im Bereich des Zuführrohrs 3 ein "Loch" entsteht.To reduce the dynamic pressure in the area of the fleet entry is in the housing 10 at the location of the junction of the feed pipe 3 on the outlet nozzle side 30 a guide body 22 in the form of a between the boundary walls 4 and 9 with the axis perpendicular to this welded pipe section provided, about a Third to half the diameter of the feed pipe 3 has and the upper vertex according to FIG. 3 with the deepest Location of the feed pipe 3 is aligned. Below the Guide body 22 remains in the housing 10 a free Flow cross-section. The guide body 22 is flowed around and prevents that in the emerging beam in the area of Feed pipe 3 a "hole" is formed.

    Die untere Begrenzungswandung 6 hat auf der Seite des Eintritts des Zuführrohrs 3 eine nach außen gerichtete rechtwinklige Abwinklung, die eine Düsenlippe 7 in Gestalt einer ebenen Begrenzung des Austrittsschlitzes 30 bildet. Die in Fig. 3 rechte Begrenzungswandung 4 des Gehäuses 10 ist in einer Stufe 8 heruntergezogen und ebenfalls zu einer Düsenlippe 11 abgewinkelt, die der Düsenlippe 7 in geringem Abstand d parallel gegenübersteht. Sie bildet die andere Begrenzung des Austrittsschlitzes 30. Die durch ebene Abwinklungen gebildeten Düsenlippen 7,11 definieren die Strahlebene 12 des aus dem Gehäuse 10 austretenden flachen Flottenstrahls. Das Verhältnis Düsenlippenlänge e zu der Düsenbreite d soll 8:1 nicht unterschreiten. e ist die in Strömungsrichtung gemessene Länge, auf der die Düsenlippen 7,11 einander parallel sind, d ihr lichter Abstand. e beträgt in einem Ausführungsbeispiel 18mm, d 2mm. Der Strahl soll also eine gewisse Führungslänge erhalten, was seiner Gleichmäßigkeit förderlich ist. Die freien Kanten der Düsenlippen 7,11 sollen an der Austrittskante 21 scharfkantig begrenzt sein, um einen exakten Strahl zu erzeugen. Dies ist bei kleineren durchgesetzten Flottenmengen besonders wichtig.The lower boundary wall 6 has on the side of the Entry of the feed pipe 3 an outward right-angled bend that a nozzle lip 7 in shape forms a flat boundary of the outlet slot 30. The right-hand boundary wall 4 of the housing 10 in FIG. 3 is pulled down in a level 8 and also closed an angled lip 11, which the nozzle lip 7 in short distance d is parallel. It forms the other limitation of the outlet slot 30. Die through Define flat angled nozzle lips 7,11 the beam plane 12 of the emerging from the housing 10 flat fleet jet. The ratio of nozzle lip length e for the nozzle width d should not be less than 8: 1. e is the length measured in the direction of flow over which the Nozzle lips 7,11 are parallel to each other, d their lights Distance. e is 18mm in one embodiment, d 2mm. So the beam should have a certain length of guide, which is conducive to its uniformity. The Free edges of the nozzle lips 7, 11 should be on the trailing edge 21 sharp-edged to be exact To generate beam. This is enforced with smaller ones Fleet quantities particularly important.

    Die Flotte tritt durch das Zuführrohr 3 an der Zuführöffnung 2 in die Ausbuchtung 20 in das Innere der Ausbuchtung 20 und des Gehäuses 10 ein. Sie prallt entsprechend ihrer Strömungsrichtung in dem Zuführrohr 3 bei 13 auf die in Fig. 3 linke Begrenzungswandung 16 der Ausbuchtung 20, die in die Begrenzungswandung 9 des Gehäuses 10 übergeht, auf und wird, weil sich dort die einzige Abströmmöglichkeit befindet, im Sinne des Pfeiles 13' erstmalig umgelenkt. Die Flotte prallt sodann mit ihrer neuen Strömungsrichtung bei 14 auf die untere Begrenzungswandung 6 und wird im Sinne des Pfeiles 14' nach rechts umgelenkt (Fig. 3). Dabei trifft die Flotte auf einen verengten Strömungsquerschnitt c und prallt bei 15 auf die Innenseite der unteren Düsenlippe 11, um im Sinne des Pfeiles 15' in den Austrittsschlitz 30 umgelenkt zu werden, indem sich der Strömungsquerschnitt c erneut erheblich verengt. Die Verringerung des Strömungsquerschnittes gegen den Austrittsschlitz 30 hin hat einen Staudruck zur Folge, der die Flotte nach den beiden Seiten hin, also senkrecht zur Zeichenebene der Fig. 3 verteilt. Durch die dreimalige Umlenkung 13',14',15' im Verein mit der Querschnittsverengung ergibt sich eine Vergleichmäßigung des Austrittsdrucks längs des Austrittsschlitzes, d.h. senkrecht zur Zeichenebene der Fig. 3. Durch geeignete Bemessung des Abschrägungswinkel der oberen Begrenzungsfläche 5 gegenüber der unteren Begrenzungsfläche 6 und der Querschnitte im Bereich des Austrittsschlitzes 30 kann eine weitgehend gleichmäßige Verteilung der Wassermenge in dem Austrittsstrahl 12 pro Längeneinheit längs des Austrittsschlitzes 30 erreicht werden, wobei die Richtung der Austrittsströmung über die ganze Erstreckung der Breitstrahldüse 100 gleichmäßig senkrecht zu der geraden Austrittskante 21 ist, wie es durch die Pfeile 18 in Fig. 1 angedeutet ist. Dies ist wichtig, wenn die Warenbahn eine Polware ist, damit der Flor nicht umgelenkt wird. Bei höheren Drücken ist allenfalls eine leichte Spreizung des Austrittsstrahls zu verzeichnen, wodurch eine sanfte Breithaltewirkung gegeben ist.The liquor passes through the feed pipe 3 at the feed opening 2 in the bulge 20 in the interior of the Bulge 20 and the housing 10 a. It bounces accordingly their flow direction in the feed pipe 3 13 on the left boundary wall 16 of the bulge in FIG. 3 20 in the boundary wall 9 of the housing 10 passes on and becomes because there is the only outlet option is, for the first time in the direction of arrow 13 ' redirected. The fleet then bounces with its new one Flow direction at 14 on the lower boundary wall 6 and is deflected to the right in the direction of arrow 14 ' (Fig. 3). The fleet encounters a narrow one Flow cross section c and bounces at 15 on the inside the lower nozzle lip 11 in order to arrow 15 ' to be redirected into the exit slot 30 by the flow cross section c again narrowed considerably. The Reduction of the flow cross-section against the outlet slot 30 results in a dynamic pressure that the fleet on both sides, i.e. perpendicular to Distributed plane of Fig. 3. Through the three times Redirection 13 ', 14', 15 'in association with the narrowing of the cross section there is an equalization of the outlet pressure along the exit slot, i.e. perpendicular to Drawing plane of Fig. 3. By appropriate dimensioning of the Bevel angle of the upper boundary surface 5 opposite the lower boundary surface 6 and the cross sections In the area of the outlet slot 30, a largely uniform distribution of the amount of water in the outlet jet 12 per unit length along the outlet slot 30 can be reached, the direction of the outlet flow over the entire extent of the wide jet nozzle 100 evenly perpendicular to the straight trailing edge 21 is, as indicated by the arrows 18 in Fig. 1. This is important if the web is a pile, so that the pile is not redirected. At higher pressures is at most a slight spread of the exit jet record, which creates a gentle spreading effect given is.

    Claims (5)

    1. A wide jet nozzle (100) for applying a liquor to a substrate, e.g. a textile fabric web, conveyed past the nozzle (100),
      with an elongate housing (10) extending over the substrate width and consisting of bent-off sheet-metal, on which two bent-off nozzle lips (7, 11) extending in the longitudinal direction of the housing (10) and situated opposite one another in parallel relationship and defining an outlet jet plane (12) form an outlet slot (30),
      and with a feed pipe arrangement which leads into the housing (10) in the middle thereof and transversely to the conveying direction,
         characterised in that
      a single feed pipe (3) is provided which leads into the housing (10) perpendicularly to the jet plane (12),
      and in that at least three baffle surfaces (13, 14, 15) disposed consecutively in the direction of flow and substantially perpendicular to the local flow direction are provided in a plane extending perpendicularly to the longitudinal direction of the housing (10) and passing through the axis of that part (3') of the feed pipe (3) which is adjacent the housing (10), the flow being deflectable through 90° at each said baffle surface.
    2. A wide jet nozzle according to claim 1, characterised in that the cross-section of the housing (10) reduces from the central plane (M) towards both sides.
    3. A wide jet nozzle according to claim 1 or 2, characterised in that the housing (10) is provided with a bulge (20) in the middle on the side remote from the outlet slot (30), said bulge (20) projecting parallel to the jet plane (12) towards the side remote from the outlet slot (30), said bulge (20) being symmetrical relatively to the central plane (M) of the housing (10) and being in liquid communication with the interior of the housing (10), the feed pipe (3) leading into said bulge by at least part of its cross-section.
    4. A wide jet nozzle according to any one of claims 1 to 3, characterised in that a tubular guide member (22) is provided inside the housing (10) between the walls (4, 9) and bridges the space therebetween and is disposed in the central plane (M) beneath the feed pipe (3) and its diameter is approximately equal to one-third to one-half of the diameter of the feed pipe (3).
    5. A wide jet nozzle according to any one of claims 1 to 4, characterised in that the ratio of the nozzle lip length e to the nozzle width d is at least 8:1.
    EP96900510A 1995-03-01 1996-01-16 Wide-angled nozzle Expired - Lifetime EP0801695B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE29503446U DE29503446U1 (en) 1995-03-01 1995-03-01 Wide jet nozzle
    DE29503446U 1995-03-01
    PCT/DE1996/000039 WO1996027042A1 (en) 1995-03-01 1996-01-16 Wide-angled nozzle

    Publications (2)

    Publication Number Publication Date
    EP0801695A1 EP0801695A1 (en) 1997-10-22
    EP0801695B1 true EP0801695B1 (en) 1998-11-18

    Family

    ID=8004679

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96900510A Expired - Lifetime EP0801695B1 (en) 1995-03-01 1996-01-16 Wide-angled nozzle

    Country Status (4)

    Country Link
    US (1) US5906320A (en)
    EP (1) EP0801695B1 (en)
    DE (2) DE29503446U1 (en)
    WO (1) WO1996027042A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102007031657A1 (en) 2007-07-06 2009-01-08 Küsters Textile GmbH Method and apparatus for continuous washing of a textile web

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7897018B2 (en) * 2007-09-05 2011-03-01 Albany International Corp. Process for producing papermaker's and industrial fabrics

    Family Cites Families (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE243733C (en) *
    DE1410047A1 (en) * 1959-09-07 1968-10-10 Arthur Thiel Device for the uniform treatment of fabric webs in the spread state with liquid or gaseous treatment agents
    AT243733B (en) * 1961-08-12 1965-11-25 Benteler Intertex Organisation Wide wet treatment device for webs
    DE2334998B2 (en) * 1973-07-10 1978-02-09 Küsters, Eduard, 4150 Krefeld WASHING MACHINE
    US4132363A (en) * 1975-02-06 1979-01-02 Eduard Kusters Nozzle for producing a wide liquid jet
    DE2504856B2 (en) * 1975-02-06 1978-07-27 Kuesters, Eduard, 4150 Krefeld Slotted nozzle for generating a wide jet of liquid
    US4347805A (en) * 1976-05-12 1982-09-07 National Steel Corporation Apparatus for liquid coating thickness control
    DE2822977A1 (en) * 1978-05-26 1979-11-29 Vepa Ag Pre-dyeing washing and/or steaming of pile fabrics or tufted products - to eliminate dyeing irregularities
    FR2469212A1 (en) * 1979-11-16 1981-05-22 Delepine Jean C FLOW SPOUT FOR LIQUID
    DE3808698A1 (en) * 1988-03-16 1989-09-28 Textilmaschinen Service Gmbh Appliance for the application of gas-like, liquid, pasty, preferably foamed media onto an application plane or a running, especially textile fabric web

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102007031657A1 (en) 2007-07-06 2009-01-08 Küsters Textile GmbH Method and apparatus for continuous washing of a textile web

    Also Published As

    Publication number Publication date
    DE29503446U1 (en) 1996-07-04
    DE59600830D1 (en) 1998-12-24
    WO1996027042A1 (en) 1996-09-06
    US5906320A (en) 1999-05-25
    EP0801695A1 (en) 1997-10-22

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