EP0725175A2 - Manifold in an apparatus for jetting high velocity liquid streams - Google Patents

Manifold in an apparatus for jetting high velocity liquid streams Download PDF

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Publication number
EP0725175A2
EP0725175A2 EP96100633A EP96100633A EP0725175A2 EP 0725175 A2 EP0725175 A2 EP 0725175A2 EP 96100633 A EP96100633 A EP 96100633A EP 96100633 A EP96100633 A EP 96100633A EP 0725175 A2 EP0725175 A2 EP 0725175A2
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EP
European Patent Office
Prior art keywords
nozzle bar
bar according
groove
ring
liquid
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
EP96100633A
Other languages
German (de)
French (fr)
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EP0725175B1 (en
EP0725175A3 (en
Inventor
Gerold Fleissner
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.)
Truetzschler Nonwovens GmbH
Original Assignee
Fleissner GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1995101738 external-priority patent/DE19501738A1/en
Priority claimed from DE19501739A external-priority patent/DE19501739A1/en
Application filed by Fleissner GmbH filed Critical Fleissner GmbH
Publication of EP0725175A2 publication Critical patent/EP0725175A2/en
Publication of EP0725175A3 publication Critical patent/EP0725175A3/en
Application granted granted Critical
Publication of EP0725175B1 publication Critical patent/EP0725175B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets
    • 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
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • 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
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • 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
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B05B15/658—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits the spraying apparatus or its outlet axis being perpendicular to the flow conduit
    • 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
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like

Definitions

  • the invention relates to a nozzle bar on a device for generating liquid jets for jet interlacing the fibers of a fiber web guided along the bar, which consists of an upper part extending over the working width of the fiber web and a liquid-tightly attached lower part, in the upper part of which Length a pressure chamber is arranged, the liquid under pressure z. B. is supplied on the end face, and parallel to it, a pressure distribution chamber is provided after an intermediate wall, which is connected to the pressure chamber via liquid flow holes arranged in the intermediate wall, and wherein on the lower part a nozzle plate with the holes for the nozzles is mounted liquid-tight.
  • a device of this type is known from US-A-4,069,563 or DD-A-220 060. Compared to DE-C-37 27 843, this bar has the advantage of a simpler construction and therefore also less maintenance-related downtimes to be expected.
  • the nozzle plate for cleaning which is possible on the front side of the nozzle plate via easy-to-open and closing insertion slots.
  • the object of the invention is to simplify this construction, in particular to vortex the liquid jets hitting the nozzle plate from the intermediate wall beforehand in order to enable a more uniform application of water pressure to the nozzle plate and to provide a possibility of how to replace the upper part of the O-ring sealing the nozzle plate in the lower part without dismantling the lower part.
  • the invention first provides that the pressure distribution chamber at the area opposite the liquid throughflow bores runs out into a slot which is narrow compared to the cross section of the pressure distribution chamber and which opens out onto the bores of the nozzle plate. It has surprisingly been found that the enlarging and then again reducing space in the pressure distribution chamber causes a swirling of the liquid jets entering from the flow bores. What is essential is only the full opening of the pressure distribution chamber to the nozzle plate, which is brought about by the subsequent slot which is open to the nozzle plate.
  • the invention provides only an impermeable impact body, which must be arranged over the length of the slot in front of the liquid flow bores. The entire cross-section of the impact body should be flowable.
  • the impact body is held several times over its length at a distance from the intermediate wall, e.g. B. is screwed.
  • the type of impact body, the cross section can be different. It comes z. B. a circular rod or a sheet in question that should extend transversely to the arrangement of the liquid flow holes.
  • the liquid flows through the nozzle plate provided with the bores.
  • This must be easily interchangeable due to constipation or another design.
  • a repair groove is provided over the entire length and width extension of the O-groove for the O-ring of the lower part opposite in the upper part of the nozzle bar, the height of which is slightly more than the thickness of the O-rings corresponds.
  • the tensioning device now holds a replacement O-ring that can be inserted into the ring groove after the longitudinal plate has been inserted into the repair groove, the replacement of not only the nozzle plate, but also the sealing O-ring possible at any time without great effort.
  • the housing of the nozzle bar consists of an upper part 1, which is screwed to the lower part 2 many times over the length by the screws 3 from below.
  • the upper part 1 has two bores 4 and 5, the upper of which is the pressure chamber 4 and the lower one the pressure distribution chamber 5. Both chambers are open on one end and screwed liquid-tight again through the covers 6 and 7.
  • the pressure chamber 4 On the other end face, the pressure chamber 4 has an opening 4 'through which the pressurized liquid is introduced.
  • the two chambers 4 and 5 are separated from one another by an intermediate wall 8.
  • a large number of flow bores 9 in the intermediate wall 8 connect the two chambers over the length of the nozzle bar, so that the liquid flowing into the pressure chamber 4 flows out uniformly over the length into the pressure distribution chamber 5.
  • the pressure distribution chamber is open at the bottom, namely through the narrow slot 10 relative to the diameter of the bore of the pressure distribution chamber 5, which also extends over the length of the beam.
  • the upper part 1 is screwed to the lower part 2 firmly and in a liquid-tight manner.
  • the tightness is brought about by the O-ring 11, which lies in an annular groove 11 'of the upper part 1.
  • the slot 10 encloses a spring projection 23 which is fitted in a corresponding groove 24 in the lower part 2.
  • an annular groove 12 ′ is again introduced, in which the O-ring 12 lies to seal the nozzle plate 14.
  • a slot 13 is also introduced in the lower part 2, which is only very narrow in its upper region and leaves little more than the width of the effective nozzle openings of the nozzle plate 14 open.
  • the lower part 2 is screwed together in a liquid-tight manner by a further cover 16 and 17.
  • a groove 18, 19 is made at the level of the nozzle plate 14 held in the lower part, into which the nozzle plate 14 extends and can thus be easily taken for replacement after removal of the cover 16 or 17.
  • the pressure distribution chamber 5 is produced in the exemplary embodiment through a bore in the nozzle bar housing.
  • the chamber 5 is also closed at the bottom.
  • the slot 10 is introduced, which is therefore smaller than the cross section of the pressure distribution chamber 5.
  • the liquid entering through the flow bores 9 is to be distributed more evenly in the distribution chamber 5.
  • the volume of the pressure distribution chamber 5 and an impact body 20, which is held exactly between the bores 9 and the slot 10 over the length of the pressure distribution chamber 5, serve this purpose.
  • the impact body 20 is held at a distance from the intermediate wall 8 and the liquid can flow around it on all sides.
  • the impact body in the intermediate wall 8 is kept at a distance several times over the length of the nozzle bar by means of screws 21. In this way, the liquid from the flow bores 9 first strikes the impact body 20, is distributed in the distribution chamber 5 and then flows with the same pressure over the length of the beam through the fine bores of the nozzle plate 14.
  • the impact body 20 can have different cross sections. According to Fig. 4, it is circular and exactly centered in the bore of the distribution chamber 5.
  • the round bar can also have a straight baffle surface according to FIG. 5 above, and may even be halved according to FIG. 6.
  • 7 and 8 show a sheet 22 instead of a round bar, which is held perpendicular to the flow bores 9 by the screws 21 in the pressure distribution chamber.
  • the longitudinal edges around which the liquid flows can be bent against the direction of flow (FIG. 8) or with the direction of flow.
  • the upper part 1 has - as described - the spring projection 23 at its lower end. This holds with its outer edges 25 the nozzle plate 14 in contact with the lower part 2.
  • the spring projection 23 When pressurized with liquid, it is pressed against the O-ring 12 by the liquid pressure and thus sealed to the slot 13. It may now be necessary that this O-ring 12 z. B. must be replaced by injury when replacing the nozzle plate 14.
  • a repair groove 26 is milled into the spring projection 23 on the surface opposite the annular groove 12 'for the O-ring 12, which groove is then delimited by the edges 25 is.
  • the repair groove 26 extends in the amount of the entire length and width extension of the O-groove for the O-ring 12 of the lower part 2 and corresponds in height to slightly more than the thickness of the O-ring 12.
  • this repair groove 26 is an in Dimensionally appropriate longitudinal sheet 27 can be inserted, which has an O-ring clamping device on the underside 28 assigned to the O-groove of the lower part, the dimensions of which are exactly or slightly larger than the O-groove 12 'of the lower part 2.
  • the O-ring clamping device consists of two spacers 29 and 30, which are attached to the underside of the longitudinal plate 27 and have an outer contour corresponding to the dimensioning of the O-groove at these ends.
  • the edges of the spacers 29, 30 are flared at the bottom, that is to say made tapering in cross section.
  • the longitudinal plate 27 is made a larger size, so that at least the tensioned O-ring 12 is covered upwards and is thus held firmly on the longitudinal plate 27.
  • a hand-insertable insertion end 31 is expediently provided at the ends of the longitudinal plate.

Abstract

The jet beam assembly, for matting the fibres of a fibre web through fluid jet streams, has an O-rig as a fluid seal for the mounting of the jet plate at the lower section. The facing upper section (1) has a repair groove (26) along the whole length and width of the O-groove (12') of the O-ring (12), with a height which is slightly greater than the O-ring (12) thickness.

Description

Die Erfindung bezieht sich auf einen Düsenbalken an einer Vorrichtung zur Erzeugung von Flüssigkeitsstrahlen zur Strahlverflechtung der Fasern einer entlang des Balkens geführten Faserbahn, der aus einem sich über die Arbeitsbreite der Faserbahn erstreckenden Oberteil und einem flüssigkeitsdicht daran befestigten Unterteil besteht, wobei in dem Oberteil über seine Länge eine Druckkammer angeordnet ist, der die unter Druck stehende Flüssigkeit z. B. stirnseitig zugeführt ist, und parallel dazu nach einer Zwischenwandung eine Druckverteilkammer vorgesehen ist, die mit der Druckkammer über in der Zwischenwandung angeordnete Flüssigkeitsdurchflußbohrungen verbunden ist, und wobei an dem Unterteil ein Düsenblech mit den Bohrungen für die Düsen flüssigkeitsdicht gelagert ist.The invention relates to a nozzle bar on a device for generating liquid jets for jet interlacing the fibers of a fiber web guided along the bar, which consists of an upper part extending over the working width of the fiber web and a liquid-tightly attached lower part, in the upper part of which Length a pressure chamber is arranged, the liquid under pressure z. B. is supplied on the end face, and parallel to it, a pressure distribution chamber is provided after an intermediate wall, which is connected to the pressure chamber via liquid flow holes arranged in the intermediate wall, and wherein on the lower part a nozzle plate with the holes for the nozzles is mounted liquid-tight.

Eine Vorrichtung dieser Art ist aus der US-A-4,069,563 oder der DD-A-220 060 bekannt. Dieser Balken hat gegenüber dem nach der DE-C-37 27 843 den Vorteil einer einfacheren Konstruktion und deshalb auch zu erwartenden geringeren wartungsbedingten Stillstandzeiten. Bei der Vorrichtung nach der Gattung muß als einziges von Zeit zu Zeit die Düsenplatte zur Reinigung ausgetauscht werden, was stirnseitig des Düsenblechs über leicht zu öffnende und schließende Einschubschlitze möglich ist.A device of this type is known from US-A-4,069,563 or DD-A-220 060. Compared to DE-C-37 27 843, this bar has the advantage of a simpler construction and therefore also less maintenance-related downtimes to be expected. In the device according to the genus, the only thing that needs to be replaced from time to time is the nozzle plate for cleaning, which is possible on the front side of the nozzle plate via easy-to-open and closing insertion slots.

Unter Beibehaltung der einfachen und damit preiswerten Konstruktion des anfangs definierten Düsenbalkens, liegt der Erfindung die Aufgabe zugrunde, diese Konstruktion zu vereinfachen, insbesondere die auf die Düsenplatte von der Zwischenwand auftreffenden Flüssigkeitsstrahlen vorher stärker zu verwirbeln, um eine gleichmäßigere Beaufschlagung der Düsenplatte mit Wasserdruck zu ermöglichen und eine Möglichkeit vorzusehen, wie ohne Demontage des Unterteils von dem Oberteil der die Düsenplatte im Unterteil abdichtende O-Ring austauschbar ist.While maintaining the simple and therefore inexpensive construction of the initially defined nozzle bar, the object of the invention is to simplify this construction, in particular to vortex the liquid jets hitting the nozzle plate from the intermediate wall beforehand in order to enable a more uniform application of water pressure to the nozzle plate and to provide a possibility of how to replace the upper part of the O-ring sealing the nozzle plate in the lower part without dismantling the lower part.

Zur Lösung der gestellten Aufgabe sieht die Erfindung zunächst vor, daß die Druckverteilkammer an dem den Flüssigkeitsdurchflußbohrungen gegenüberliegenden Bereich in einen gegenüber dem Querschnitt der Druckverteilkammer schmalen Schlitz ausläuft, der auf die Bohrungen des Düsenblechs ausmündet. Es hat sich überraschend herausgestellt, daß der sich vergrößernde und dann wieder verkleinernde Raum in der Druckverteilkammer eine Verwirbelung der von den Durchflußbohrungen eintretenden Flüssigkeitsstrahlen bewirkt. Wesentlich ist nur die volle Öffnung der Druckverteilkammer zum Düsenblech, was durch den sich anschließenden, zum Düsenblech offenen Schlitz bewirkt ist.To achieve the object, the invention first provides that the pressure distribution chamber at the area opposite the liquid throughflow bores runs out into a slot which is narrow compared to the cross section of the pressure distribution chamber and which opens out onto the bores of the nozzle plate. It has surprisingly been found that the enlarging and then again reducing space in the pressure distribution chamber causes a swirling of the liquid jets entering from the flow bores. What is essential is only the full opening of the pressure distribution chamber to the nozzle plate, which is brought about by the subsequent slot which is open to the nozzle plate.

Eine noch bessere Verwirbelung der Flüssigkeitsstrahlen in der Druckverteilkammer ist erzielt, wenn die aus den Durchflußbohrungen austretenden Flüssigkeitsstrahlen auf ein Hindernis in der Druckverteilkammer treffen. Dieses Hindernis darf aber nicht verstopfen können. Deshalb sieht die Erfindung lediglich einen undurchlässigen Prallkörper vor, der über die Länge des Schlitzes vor den Flüssigkeitsdurchflußbohrungen angeordnet sein muß. Der Prallkörper sollte über seinen ganzen Querschnitt umströmbar sein.An even better swirling of the liquid jets in the pressure distribution chamber is achieved when the liquid jets emerging from the flow bores meet an obstacle in the pressure distribution chamber. However, this obstacle must not be able to clog. Therefore, the invention provides only an impermeable impact body, which must be arranged over the length of the slot in front of the liquid flow bores. The entire cross-section of the impact body should be flowable.

Es hat sich als besonders vorteilhaft herausgestellt, wenn der Prallkörper mit Abstand zur Zwischenwandung mehrfach über seine Länge an dieser gehalten z. B. verschraubt ist. Die Art des Prallkörpers, der Querschnitt kann unterschiedlich sein. Es kommt z. B. eine kreisrunde Stange oder auch ein Blech infrage, daß sich quer zur Anordnung der Flüssigkeitsdurchflußbohrungen erstrecken sollte.It has proven to be particularly advantageous if the impact body is held several times over its length at a distance from the intermediate wall, e.g. B. is screwed. The type of impact body, the cross section can be different. It comes z. B. a circular rod or a sheet in question that should extend transversely to the arrangement of the liquid flow holes.

In Strömungsrichtung im Anschluß an die Druckverteilkammer durchströmt die Flüssigkeit das mit den Bohrungen versehene Düsenblech. Dieses muß evt. wegen Verstopfung oder wegen eines anderen Designs leicht austauschbar sein. Es ist bekannt, das Düsenblech mittels eines abdichtenden O-Rings flüssigkeitsdicht im Unterteil zu lagern. In Ausgestaltung der Vorrichtung nach der Erfindung ist dort vorgesehen, daß über die ganze Längen- und Breitenertreckung der O-Nut für den O-Ring des Unterteils gegenüberliegend im Oberteil des Düsenbalkens eine Reparaturnut vorgesehen ist, die in der Höhe etwas mehr als der Dicke des O-Rings entspricht.In the flow direction following the pressure distribution chamber, the liquid flows through the nozzle plate provided with the bores. This must be easily interchangeable due to constipation or another design. It is known to store the nozzle plate in a liquid-tight manner in the lower part by means of a sealing O-ring. In an embodiment of the device according to the invention there is provided that a repair groove is provided over the entire length and width extension of the O-groove for the O-ring of the lower part opposite in the upper part of the nozzle bar, the height of which is slightly more than the thickness of the O-rings corresponds.

In einfacher Weise kann jetzt nach Entfernung des den Einschubschlitz für das Düsenblech abdeckenden Deckels in diese Reparaturnut ein in der Dimension passendes Längsblech eingeschoben werden, das an der der O-Nut zugeordneten Unterseite eine O-Ring-Spannvorrichtung aufweist, die in ihrer Dimension genau oder wenig größer als die O-Nut des Unterteils bemessen ist.In a simple manner, after removing the cover covering the insertion slot for the nozzle plate, a dimension that is suitable for this repair groove can now be found Longitudinal plate are inserted, which has an O-ring clamping device on the underside associated with the O-groove, the dimensions of which are exactly or slightly larger than the O-groove of the lower part.

Wenn nun die Spannvorrichtung einen Ersatz-O-Ring gespannt hält, der nach Einschub des Längsbleches in die Reparaturnut in die von dem defekten O-Ring befreite Ringnut einsetzbar ist, dann ist der Austausch nicht nur des Düsenblechs, sondern auch des abdichtenden O-Rings ohne großen Aufwand jederzeit möglich.If the tensioning device now holds a replacement O-ring that can be inserted into the ring groove after the longitudinal plate has been inserted into the repair groove, the replacement of not only the nozzle plate, but also the sealing O-ring possible at any time without great effort.

In der Zeichnung ist ein Düsenbalken nach der Erfindung beispielhaft dargestellt. Anhand dieses Balkens sind noch weitere erfinderische Details erläutert. Es zeigen:

Fig. 1
einen Schnitt längs durch einen Düsenbalken,
Fig. 2
die Ansicht der Stirnseite des Düsenbalkens nach Fig. 1,
Fig. 3
einen Schnitt entlang der Linie C - C nach Fig. 1 mit der Ansicht des Unterteils des Düsenbalkens,
Fig. 4
einen Schnitt quer durch den Düsenbalken nach Fig. 1 entlang der Linie A - A,
Fig. 5 - 8
jeweils einen Schnitt ähnlich dem nach Fig. 4 mit lediglich unterschiedlichen Prallkörperquerschnitten,
Fig. 9
die Unteransicht eines Reparaturlängsbleches mit der O-Ring-Spannvorrich tung und
Fig. 10
das Reparaturlängsblech in der Reparaturnut beim Einsetzen eines Ersatz-O-Ringes.
In the drawing, a nozzle bar according to the invention is shown as an example. This bar explains further inventive details. Show it:
Fig. 1
a cut lengthwise through a nozzle bar,
Fig. 2
the view of the end face of the nozzle bar according to Fig. 1,
Fig. 3
2 shows a section along the line C - C according to FIG. 1 with the view of the lower part of the nozzle bar,
Fig. 4
2 shows a section across the nozzle bar according to FIG. 1 along the line A - A,
5 - 8
in each case a section similar to that of FIG. 4 with only different impact body cross sections,
Fig. 9
the bottom view of a longitudinal repair sheet with the O-ring clamping device and
Fig. 10
the longitudinal repair sheet in the repair groove when inserting a replacement O-ring.

Das Gehäuse des Düsenbalkens besteht aus einem Oberteil 1, das mit dem Unterteil 2 vielfach über die Länge durch die Schrauben 3 von unten verschraubt ist. Das Oberteil 1 weist längs zwei Bohrungen 4 und 5 auf, von denen die obere die Druckkammer 4 und die untere die Druckverteilkammer 5 ist. Beide Kammern sind an der einen Stirnseite offen und wieder durch die Deckel 6 und 7 flüssigkeitsdicht verschraubt. An der anderen Stirnseite weist die Druckkammer 4 eine Öffnung 4' auf, durch die die unter Druck gesetzte Flüssigkeit eingeführt wird. Die beiden Kammern 4 und 5 sind durch eine Zwischenwandung 8 voneinander getrennt. Über die Länge des Düsenbalkens verbinden ein große Anzahl von Durchflußbohrungen 9 in der Zwischenwandung 8 die beiden Kammern, so daß die in die Druckkammer 4 einströmende Flüssigkeit gleichmäßig verteilt über die Länge in die Druckverteilkammer 5 ausströmt. Die Druckverteilkammer ist nach unten offen, und zwar durch den gegenüber dem Durchmesser der Bohrung der Druckverteilkammer 5 schmalen Schlitz 10, der sich ebenfalls über die Länge des Balkens erstreckt.The housing of the nozzle bar consists of an upper part 1, which is screwed to the lower part 2 many times over the length by the screws 3 from below. The upper part 1 has two bores 4 and 5, the upper of which is the pressure chamber 4 and the lower one the pressure distribution chamber 5. Both chambers are open on one end and screwed liquid-tight again through the covers 6 and 7. On the other end face, the pressure chamber 4 has an opening 4 'through which the pressurized liquid is introduced. The two chambers 4 and 5 are separated from one another by an intermediate wall 8. A large number of flow bores 9 in the intermediate wall 8 connect the two chambers over the length of the nozzle bar, so that the liquid flowing into the pressure chamber 4 flows out uniformly over the length into the pressure distribution chamber 5. The pressure distribution chamber is open at the bottom, namely through the narrow slot 10 relative to the diameter of the bore of the pressure distribution chamber 5, which also extends over the length of the beam.

Gemäß Fig. 4 ist das Oberteil 1 mit dem Unterteil 2 fest und flüssigkeitsdicht verschraubt. Die Dichtigkeit wird durch den O-Ring 11 bewirkt, der in einer Ringnut 11' des Oberteils 1 einliegt. In der Mitte zwischen dem O-Ring 11 umschließt den Schlitz 10 einen Federvorsprung 23, der in einer entsprechenden Nut 24 des Unterteils 2 eingepaßt ist. In dem Boden der Nut 24 des Unterteils 2 ist wiederum eine Ringnut 12' eingebracht, in der der O-Ring 12 zur Abdichtung des Düsenblechs 14 einliegt. In einer Linie unterhalb der Flüssigkeitsdurchflußbohrungen 9 und des Schlitzes 10 ist im Unterteil 2 ebenfalls ein Schlitz 13 eingebracht, der in seinem oberen Bereich nur sehr schmal ist und nur wenig mehr als die Breite der wirksamen Düsenöffnungen des Düsenbleches 14 offen läßt.4, the upper part 1 is screwed to the lower part 2 firmly and in a liquid-tight manner. The tightness is brought about by the O-ring 11, which lies in an annular groove 11 'of the upper part 1. In the middle between the O-ring 11, the slot 10 encloses a spring projection 23 which is fitted in a corresponding groove 24 in the lower part 2. In the bottom of the groove 24 of the lower part 2, an annular groove 12 ′ is again introduced, in which the O-ring 12 lies to seal the nozzle plate 14. In a line below the liquid flow bores 9 and the slot 10, a slot 13 is also introduced in the lower part 2, which is only very narrow in its upper region and leaves little more than the width of the effective nozzle openings of the nozzle plate 14 open.

Fluchtend mit den Deckeln 6, 7 bzw. der rückwärtigen Gehäusestirnwandung 15 ist das Unterteil 2 je durch einen weiteren Deckel 16 und 17 flüssigkeitsdicht verschraubt. In den Deckeln 16, 17 ist in Höhe des im Unterteil gehaltenen Düsenbleches 14 eine Nut 18, 19 eingebracht, in die sich das Düsenblech 14 hinein erstreckt und damit leicht nach Demontage des Deckels 16 oder 17 zum Austausch gefaßt werden kann.Aligned with the covers 6, 7 or the rear housing end wall 15, the lower part 2 is screwed together in a liquid-tight manner by a further cover 16 and 17. In the covers 16, 17, a groove 18, 19 is made at the level of the nozzle plate 14 held in the lower part, into which the nozzle plate 14 extends and can thus be easily taken for replacement after removal of the cover 16 or 17.

Die Druckverteilkammer 5 ist beim Ausführungsbeispiel durch eine Bohrung in das Düsenbalkengehäuse hergestellt. Die Kammer 5 ist also auch nach unten verschlossen. Zum Austritt der Flüssigkeit aus der Druckverteilkammer 5 hin zum Düsenblech 14 ist der Schlitz 10 eingebracht, der damit kleiner als der Querschnitt der Druckverteilkammer 5 ist. Die durch die Durchflußbohrungen 9 eintretende Flüssigkeit soll sich in der Verteilkammer 5 gleichmäßiger verteilen. Dazu dient das Volumen der Druckverteilkammer 5 und ein Prallkörper 20, der über die Länge der Druckverteilkammer 5 genau zwischen den Bohrungen 9 und dem Schlitz 10 gehalten ist. Der Prallkörper 20 ist mit Abstand zur Zwischenwand 8 gehalten und allseitig von der Flüssigkeit umströmbar. Um dies zu ermöglichen, ist der Prallkörper in der Zwischenwand 8 mehrfach über die Länge des Düsenbalkens mittels Schrauben 21 auf Abstand gehalten. Auf diese Weise trifft die Flüssigkeit aus den Durchflußbohrungen 9 zunächst auf den Prallkörper 20, verteilt sich in der Verteilkammer 5 und strömt dann mit gleichem Druck über die Länge des Balkens durch die feinen Bohrungen des Düsenbleches 14.The pressure distribution chamber 5 is produced in the exemplary embodiment through a bore in the nozzle bar housing. The chamber 5 is also closed at the bottom. For the exit of the liquid from the pressure distribution chamber 5 to the nozzle plate 14, the slot 10 is introduced, which is therefore smaller than the cross section of the pressure distribution chamber 5. The liquid entering through the flow bores 9 is to be distributed more evenly in the distribution chamber 5. The volume of the pressure distribution chamber 5 and an impact body 20, which is held exactly between the bores 9 and the slot 10 over the length of the pressure distribution chamber 5, serve this purpose. The impact body 20 is held at a distance from the intermediate wall 8 and the liquid can flow around it on all sides. In order to make this possible, the impact body in the intermediate wall 8 is kept at a distance several times over the length of the nozzle bar by means of screws 21. In this way, the liquid from the flow bores 9 first strikes the impact body 20, is distributed in the distribution chamber 5 and then flows with the same pressure over the length of the beam through the fine bores of the nozzle plate 14.

Der Prallkörper 20 kann unterschiedliche Querschnitte aufweisen. Nach Fig. 4 ist er kreisrund und genau zentrisch in der Bohrung der Verteilkammer 5 gehalten. Der Rundstab kann gemäß Fig. 5 oben auch eine gerade Prallfläche aufweisen, ggf. sogar gemäß Fig. 6 halbiert sein. Fig. 7 und 8 zeigen statt eines Rundstabes ein Blech 22, das senkrecht zu den Durchflußbohrungen 9 von den Schrauben 21 in der Druckverteilkammer gehalten ist. Die von der Flüssigkeit umströmten Längskanten können gegen die Strömungsrichtung (Fig. 8) oder mit der Strömungsrichtung umgebogen sein.The impact body 20 can have different cross sections. According to Fig. 4, it is circular and exactly centered in the bore of the distribution chamber 5. The round bar can also have a straight baffle surface according to FIG. 5 above, and may even be halved according to FIG. 6. 7 and 8 show a sheet 22 instead of a round bar, which is held perpendicular to the flow bores 9 by the screws 21 in the pressure distribution chamber. The longitudinal edges around which the liquid flows can be bent against the direction of flow (FIG. 8) or with the direction of flow.

Das Oberteil 1 weist - wie beschrieben - an seinem unteren Ende den Federvorsprung 23 auf. Dieser hält mit seinen äußeren Kanten 25 das Düsenblech 14 in Kontakt mit dem Unterteil 2. Bei Druckbeaufschlagung mit Flüssigkeit wird es durch den Flüssigkeitsdruck gegen den O-Ring 12 gedrückt und so zum Schlitz 13 abgedichtet. Es kann nun notwendig werden, daß dieser O-Ring 12 z. B. durch Verletzen beim Austauschen des Düsenbleches 14 ersetzt werden muß. Um eine Demontage des Unterteils 2 vom Oberteil 1 und damit Lösen der vielen Schrauben 3 zu vermeiden, ist in den Federvorsprung 23 auf der der Ringnut 12' für den O-Ring 12 gegenüberliegenden Fläche eine Reparaturnut 26 eingefräst, die dann durch die Kanten 25 begrenzt ist. Die Reparaturnut 26 erstreckt sich in Höhe der ganzen Längen- und Breitenertreckung der O-Nut für den O-Ring 12 des Unterteils 2 und entspricht in der Höhe etwas mehr als der Dicke des O-Rings 12. In diese Reparaturnut 26 ist ein in der Dimension passendes Längsblech 27 einschiebbar, das an der der O-Nut des Unterteils zugeordneten Unterseite 28 eine O-Ring-Spannvorrichtung aufweist, die in ihrer Dimension genau oder wenig größer als die O-Nut 12' des Unterteils 2 bemessen ist. Die O-Ring-Spannvorrichtung besteht aus zwei Abstandshaltern 29 und 30, die an der Unterseite des Längsbleches 27 befestigt sind und eine Außenkontur entsprechend der Dimensionierung der O-Nut an diesen Enden aufweisen. Zum besseren Halt des O-Rings 12 sind die Kanten der Abstandshalter 29, 30 nach unten konisch sich erweiternd, im Querschnitt also spitz zulaufend gefertigt. Außerdem ist das Längsblech 27 um ein Maß größer gearbeitet, so daß zumindest der gespannt gehaltene O-Ring 12 nach oben abgedeckt und damit an dem Längsblech 27 fest gehalten ist. An den Enden des Längsbleches ist zweckmäßigerweise ein mit der Hand faßbares Einschubende 31 vorgesehen.The upper part 1 has - as described - the spring projection 23 at its lower end. This holds with its outer edges 25 the nozzle plate 14 in contact with the lower part 2. When pressurized with liquid, it is pressed against the O-ring 12 by the liquid pressure and thus sealed to the slot 13. It may now be necessary that this O-ring 12 z. B. must be replaced by injury when replacing the nozzle plate 14. In order to avoid dismantling the lower part 2 from the upper part 1 and thus loosening the many screws 3, a repair groove 26 is milled into the spring projection 23 on the surface opposite the annular groove 12 'for the O-ring 12, which groove is then delimited by the edges 25 is. The repair groove 26 extends in the amount of the entire length and width extension of the O-groove for the O-ring 12 of the lower part 2 and corresponds in height to slightly more than the thickness of the O-ring 12. In this repair groove 26 is an in Dimensionally appropriate longitudinal sheet 27 can be inserted, which has an O-ring clamping device on the underside 28 assigned to the O-groove of the lower part, the dimensions of which are exactly or slightly larger than the O-groove 12 'of the lower part 2. The O-ring clamping device consists of two spacers 29 and 30, which are attached to the underside of the longitudinal plate 27 and have an outer contour corresponding to the dimensioning of the O-groove at these ends. For a better hold of the O-ring 12, the edges of the spacers 29, 30 are flared at the bottom, that is to say made tapering in cross section. In addition, the longitudinal plate 27 is made a larger size, so that at least the tensioned O-ring 12 is covered upwards and is thus held firmly on the longitudinal plate 27. A hand-insertable insertion end 31 is expediently provided at the ends of the longitudinal plate.

Nach Plazierung des Längsbleches 27 in die Reparaturnut 26 entsprechend der Darstellung in der Fig. 6 ist lediglich durch eine Lehre od. dgl. der Ersatz-O-Ring 12 von den Kanten der Abstandshalter 29, 30 nach unten zu rollen, woraufhin der O-Ring 12 in die Nut 12' rutschen muß.After the longitudinal plate 27 has been placed in the repair groove 26 as shown in FIG. 6, the replacement O-ring 12 of FIG the edges of the spacers 29, 30 roll down, whereupon the O-ring 12 must slide into the groove 12 '.

Claims (17)

Düsenbalken an einer Vorrichtung zur Erzeugung von Flüssigkeitsstrahlen zur Strahlverflechtung der Fasern einer entlang des Balkens geführten Faserbahn, der aus einem sich über die Arbeitsbreite der Faserbahn erstreckenden Oberteil und einem flüssigkeitsdicht daran befestigten Unterteil besteht, wobei in dem Oberteil über seine Länge eine Druckkammer angeordnet ist, der die unter Druck stehende Flüssigkeit z. B. stirnseitig zugeführt ist, und parallel dazu mit Zwischenwandung eine Druckverteilkammer vorgesehen ist, die mit der Druckkammer über in der Zwischenwandung angeordnete Flüssigkeitsdurchflußbohrungen verbunden ist, und wobei an dem Unterteil ein Düsenblech mit den Bohrungen für die Düsen flüssigkeitsdicht gelagert ist, dadurch gekennzeichnet, daß die Druckverteilkammer (5) an dem den Flüssigkeitsdurchflußbohrungen (9) gegenüberliegenden Bereich in einen gegenüber dem Querschnitt der Druckverteilkammer (5) schmalen Schlitz (10) ausläuft, der auf die Bohrungen des Düsenblechs (14) ausmündet.Nozzle bar on a device for producing liquid jets for interlacing the fibers of a fiber web guided along the bar, which device consists of an upper part which extends over the working width of the fiber web and a lower part which is attached to it in a liquid-tight manner, a pressure chamber being arranged in the upper part along its length, the pressurized liquid z. B. is supplied on the end face, and a pressure distribution chamber is provided in parallel with the intermediate wall, which is connected to the pressure chamber via liquid flow bores arranged in the intermediate wall, and wherein on the lower part a nozzle plate with the holes for the nozzles is mounted liquid-tight, characterized in that the pressure distribution chamber (5) at the area opposite the liquid flow bores (9) runs out into a slot (10) which is narrow compared to the cross section of the pressure distribution chamber (5) and which opens out onto the bores of the nozzle plate (14). Düsenbalken nach Anspruch 1, dadurch gekennzeichnet, daß in der Druckverteilkammer (5) zwischen den Flüssigkeitsdurchflußbohrungen (9) und dem Schlitz (10) ein Prallkörper (20, 22) über die Länge des Schlitzes (10) angeordnet ist.Nozzle bar according to Claim 1, characterized in that an impact body (20, 22) is arranged over the length of the slot (10) in the pressure distribution chamber (5) between the liquid throughflow bores (9) and the slot (10). Düsenbalken nach den Ansprüchen 1 oder 2 , dadurch gekennzeichnet, daß der Prallkörper (20, 22) über seine Länge und über seinen Querschnitt frei umströmbar in der Druckverteilkammer (5) angeordnet ist.Nozzle bar according to claims 1 or 2, characterized in that the impact body (20, 22) is arranged in its pressure distribution chamber (5) over its length and over its cross section so as to be freely flowable. Düsenbalken nach Anspruch 3, dadurch gekennzeichnet, daß der Prallkörper (20, 22) zentrisch in der Druckverteilkammer (5) angeordnet ist.Nozzle bar according to claim 3, characterized in that the impact body (20, 22) is arranged centrally in the pressure distribution chamber (5). Düsenbalken nach Anspruch 4, dadurch gekennzeichnet, daß die Druckverteilkammer (5) im Querschnitt rund ist und der Prallkörper (20) in deren Mittelpunkt angeordnet ist.Nozzle bar according to claim 4, characterized in that the pressure distribution chamber (5) is round in cross-section and the impact body (20) is arranged in the center thereof. Düsenbalken nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß der Prallkörper (20, 22) mit Abstand zur und an der Zwischenwandung (8) mehrfach über die Länge gehalten ist.Nozzle bar according to one of Claims 2 to 5, characterized in that the impact body (20, 22) is held several times over the length at a distance from and on the intermediate wall (8). Düsenbalken nach Anspruch 6, dadurch gekennzeichnet, daß als Abstandhalter Schraubverbindungen (21) vorgesehen sind.Nozzle bar according to claim 6, characterized in that screw connections (21) are provided as spacers. Düsenbalken nach einem der Ansprüche 2 - 7, dadurch gekennzeichnet, daß der Prallkörper (20) im Querschnitt im wesentlichen kreisrund ausgebildet ist.Nozzle bar according to one of claims 2 - 7, characterized in that the impact body (20) is essentially circular in cross section. Düsenbalken nach Anspruch 8, dadurch gekennzeichnet, daß der Prallkörper (20) auf der Zuströmseite mit einer ebenen Prallfläche versehen ist.Nozzle bar according to claim 8, characterized in that the impact body (20) is provided with a flat impact surface on the inflow side. Düsenbalken nach einem der Ansprüche 2 - 7, dadurch gekennzeichnet, daß der Prallkörper (20, 22) als Blech (21) ausgebildet ist, das sich senkrecht zur Anordnung der Flüssigkeitsdurchflußbohrungen (9) erstreckt.Nozzle bar according to one of claims 2-7, characterized in that the impact body (20, 22) is designed as a sheet (21) which extends perpendicular to the arrangement of the liquid flow bores (9). Düsenbalken nach Anspruch 10, dadurch gekennzeichnet, daß die beiden umströmten Längskanten des Bleches (22) gegen die Umströmungsrichtung aufgebogen sind.Nozzle bar according to claim 10, characterized in that the two longitudinal edges of the sheet (22) around which flow flows are bent against the direction of flow. Düsenbalken nach Anspruch 10, dadurch gekennzeichnet, daß die beiden umströmten Längskanten des Bleches (22) in Strömungsrichtung umgebogen sind.Nozzle bar according to Claim 10, characterized in that the two longitudinal edges of the sheet (22) which are flowed around are bent in the direction of flow. Düsenbalken nach einem der vorhergehenden Ansprüche 1 - 12, dessen Düsenblech mit den Bohrungen für die Düsen mittels eines abdichtenden O-Rings flüssigkeitsdicht gelagert ist, dadurch gekennzeichnet, daß über die ganze Längen- und Breitenertreckung der O-Nut (12') für den O-Ring (12) des Unterteils gegenüberliegend im Oberteil (1) des Düsenbalkens eine Reparaturnut (26) vorgesehen ist, die in der Höhe etwas mehr als der Dicke des O-Rings (12) entspricht.Nozzle bar according to one of the preceding claims 1-12, the nozzle plate with the holes for the nozzles is mounted in a liquid-tight manner by means of a sealing O-ring, characterized in that the O-groove (12 ') extends for the O over the entire length and width extension -Ring (12) of the lower part opposite a repair groove (26) is provided in the upper part (1) of the nozzle bar, the height of which corresponds to slightly more than the thickness of the O-ring (12). Düsenbalken nach Anspruch 13, dadurch gekennzeichnet, daß in diese Reparaturnut (26) ein in der Dimension passendes Längsblech (27) einschiebbar ist, das an der der O-Nut (12') des Unterteils (2) zugeordneten Unterseite (28) eine O-Ring-Spannvorrichtung aufweist, die in ihrer Dimension genau oder wenig größer als die O-Nut (12') des Unterteils (2) bemessen ist.Nozzle bar according to Claim 13, characterized in that a longitudinal plate (27) of suitable dimensions can be inserted into this repair groove (26), which has an O on the underside (28) assigned to the O-groove (12 ') of the lower part (2) -Ring clamping device which is dimensioned exactly or slightly larger than the O-groove (12 ') of the lower part (2) in its dimension. Düsenbalken nach Anspruch 14, dadurch gekennzeichnet, daß die O-Ring-Spannvorrichtung einen Ersatz-O-Ring (12) gespannt hält, der nach Einschub des Längsbleches (27) in die Reparaturnut (26) in die von dem defekten O-Ring befreite O-Nut (12') einschiebbar ist.Nozzle bar according to Claim 14, characterized in that the O-ring tensioning device holds a replacement O-ring (12) which, after insertion of the longitudinal plate (27) into the repair groove (26), frees the defective O-ring O-groove (12 ') can be inserted. Düsenbalken nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß die O-Ring-Spannvorrichtung aus dem in die Reparaturnut (26) passenden Längsblech (27) besteht und entsprechend der Dimensionierung der O-Nut (12') im Unterteil (2) zwei nach unten vorstehende, der Rundung der O-Nut (12') entsprechende, an dem Längsblech (27) befestigte Abstandshalter (29, 30) in Höhe der beiden Enden der O-Nut (12') an den Stirnseiten des Düsenbalkens aufweist.Nozzle bar according to claim 14 or 15, characterized in that the O-ring clamping device consists of the longitudinal plate (27) fitting into the repair groove (26) and two according to the dimensioning of the O-groove (12 ') in the lower part (2) Has the above-mentioned spacer (29, 30) corresponding to the rounding of the O-groove (12 ') and attached to the longitudinal plate (27) at the level of the two ends of the O-groove (12') on the end faces of the nozzle bar. Düsenbalken nach Anspruch 16, dadurch gekennzeichnet, daß das Längsblech (27) der O-Ring-Spannvorrichtung sich über die Breiten- und Längenerstreckung der beiden Abstandshalter (29, 30) um zumindest ein geringes Maß (31) hinaus ertreckt.Nozzle bar according to claim 16, characterized in that the longitudinal plate (27) of the O-ring clamping device extends beyond the width and length of the two spacers (29, 30) by at least a small amount (31).
EP96100633A 1995-01-23 1996-01-18 Manifold in an apparatus for jetting high velocity liquid streams Expired - Lifetime EP0725175B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19501738 1995-01-23
DE19501739 1995-01-23
DE1995101738 DE19501738A1 (en) 1995-01-23 1995-01-23 Jet beam for matting fibres in web
DE19501739A DE19501739A1 (en) 1995-01-23 1995-01-23 Jet beam for matting fibre webs

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EP0725175A2 true EP0725175A2 (en) 1996-08-07
EP0725175A3 EP0725175A3 (en) 1997-01-08
EP0725175B1 EP0725175B1 (en) 1999-03-24

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EP (1) EP0725175B1 (en)
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EP1053792A2 (en) 1999-05-21 2000-11-22 Gerold Fleissner Device having a nozzle manifold generating liquid jets for treating fibers on a textile web
WO2001015812A1 (en) 1999-09-01 2001-03-08 Gerold Fleissner Nozzle body for producing superfine liquid jet streams on water needling devices and a jet needling method
WO2002024998A2 (en) 2000-09-21 2002-03-28 Fleissner Gmbh & Co. Maschinenfabrik Nozzle body for producing very fine liquid jet flows on water needling devices
US7356892B2 (en) 2000-12-22 2008-04-15 Fleissner Gmbh & Co. Maschinenfabrik Method for hydrodynamically subjecting a goods line, optionally with finite preproducts, to water jets and nozzle device for producing liquid jets
WO2002052083A2 (en) * 2000-12-22 2002-07-04 Fleissner Gmbh & Co. Maschinenfabrik Method for hydrodynamically subjecting a goods line, optionally with finite pre-products, to water jets and nozzle device for producing liquid jets
WO2002052083A3 (en) * 2000-12-22 2002-09-12 Fleissner Maschf Gmbh Co Method for hydrodynamically subjecting a goods line, optionally with finite pre-products, to water jets and nozzle device for producing liquid jets
WO2003066948A1 (en) * 2002-02-07 2003-08-14 Fleissner Gmbh Nozzle bar arranged on a device for generating liquid jets
FR2836074A1 (en) 2002-02-19 2003-08-22 Rieter Perfojet Water jet feeder especially for bonding fibres, has seal carrier mounted detachably in body marked for accurate re-positioning after removal
WO2003070378A1 (en) 2002-02-19 2003-08-28 Rieter Perfojet Device for spraying water jets with removable seal support
WO2006081938A1 (en) * 2005-02-04 2006-08-10 Fleissner Gmbh Nozzle beam with means for setting working width and method for setting the working width of a nozzle strip
WO2006089601A1 (en) 2005-02-25 2006-08-31 Fleissner Gmbh Nozzle strip comprising integrated cleaning means, and method for cleaning one such nozzle strip
DE102006014428B3 (en) * 2006-03-27 2007-10-18 Küsters Technologie GmbH & Co.KG - Process to stabilize moving web of loose fibers into a fleece web by exposure to pressurized liquid carbon dioxide jets
IT201600076150A1 (en) * 2016-07-20 2018-01-20 A C M Eng S R L Injector device for water jets
WO2018068961A1 (en) * 2016-10-12 2018-04-19 TRüTZSCHLER GMBH & CO. KG Jet manifold for water jet processing fibers
WO2018068951A1 (en) * 2016-10-12 2018-04-19 TRüTZSCHLER GMBH & CO. KG Jet manifold for water jet processing fibers
CN109790664A (en) * 2016-10-12 2019-05-21 特吕茨施勒有限及两合公司 With the jet beam of water jet machining fiber
CN109790664B (en) * 2016-10-12 2022-02-01 特吕茨施勒有限及两合公司 Nozzle beam for processing fibers with water jets

Also Published As

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JP3665403B2 (en) 2005-06-29
US5692278A (en) 1997-12-02
DE59601476D1 (en) 1999-04-29
JPH08226056A (en) 1996-09-03
EP0725175B1 (en) 1999-03-24
EP0725175A3 (en) 1997-01-08

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