EP3526383B1 - Jet manifold for water jet processing fibers - Google Patents

Jet manifold for water jet processing fibers Download PDF

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Publication number
EP3526383B1
EP3526383B1 EP17764395.4A EP17764395A EP3526383B1 EP 3526383 B1 EP3526383 B1 EP 3526383B1 EP 17764395 A EP17764395 A EP 17764395A EP 3526383 B1 EP3526383 B1 EP 3526383B1
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EP
European Patent Office
Prior art keywords
nozzle
pressure
pressure distribution
distribution chamber
chamber
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EP17764395.4A
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German (de)
French (fr)
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EP3526383A1 (en
Inventor
Bernd Stork
Antonio GUZMAN NAVARRO
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Truetzschler GmbH and Co KG
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Truetzschler GmbH and Co KG
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    • 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
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet

Definitions

  • the present invention relates to a nozzle bar for processing fibers with water jets, having an elongated upper part in which an elongated pressure chamber is introduced, the pressure chamber having one end side with an opening for the feed of water and an opposite closed end side, and wherein a pressure distribution chamber is introduced in the upper part, which extends parallel to the pressure chamber and wherein several flow bores are distributed over the length of the upper part in the partition between the pressure chamber and the pressure distribution chamber, through which the water can be guided from the pressure chamber into the pressure distribution chamber, and having an elongated lower part which is arranged on the upper part in a liquid-tight manner, and wherein a nozzle strip with bores for the water outlet is received in or on the lower part, and wherein a slot is made in the upper part which extends between the Pressure distribution chamber and the nozzle strip for the application of water to the nozzle strip.
  • a nozzle bar for processing textile goods with water jets is known.
  • the processing of the textile goods takes place with a large number of water jets generated in a row, which for example extend over the entire width of a textile material web moving under the water jets and act on it.
  • the nozzle bar has a water connection with which water enters the water through the opening Pressure chamber is fed.
  • the water enters the pressure chamber through the opening with a pre-pressure of 250 bar, for example, the inflow speed of the water through the opening is up to 8 m / s, and approximately in the middle of the pressure chamber the flow speed is still 2.5 m / s on.
  • the nozzle bar is elongated and therefore slim, the nozzle bar being essentially formed by the elongated upper part and the elongated lower part.
  • the lower part is arranged in a liquid-tight manner on the side of the upper part that faces the textile goods, and the water jets are generated through the large number of bores that are made in the nozzle strip via the lower part and via the nozzle strip arranged in the lower part or on the lower part.
  • On the underside of the pressure distribution chamber there is a slot which has a constant width and which closes with the nozzle strip on the bottom.
  • the pressure chamber is formed separately from the pressure distribution chamber, and between the pressure chamber and the pressure distribution chamber a plurality of throughflow openings extend in the partition between the pressure chamber and the pressure distribution chamber.
  • the equalization of the water pressure on the inside in front of the bores in the nozzle strip should, however, be implemented with the lowest possible total pressure loss.
  • the nozzle bars are permanently exposed to water, so that every loss of pressure in the nozzle bar also entails a loss of energy when operating the system. Consequently, the goal when building nozzle bars is, in addition to a uniform formation of all water jets, the lowest possible pressure loss, starting from the opening for feeding water into the pressure chamber to the outflow of water from the bores in the nozzle strip.
  • the EP 0 725 175 B1 discloses a nozzle bar for processing a textile product with water jets, and in order to equalize the water pressure, the slot in front of the outlet bores in the nozzle strip is designed in such a way that an increased swirling of the water is generated for an even exposure of the nozzle strip from the inside, which, however, increases the pressure loss goes hand in hand.
  • nozzle bars must be cleaned at regular intervals, and in particular the nozzle strip must be easy to remove.
  • geometrical adjustments can enable a further reduction in pressure loss, so that, for example, the narrow slot at the outlet of the pressure distribution chamber to the nozzle strip can be optimized, as in FIG EP 0 725 175 B1 described.
  • the object of the invention is to further improve a nozzle bar for processing fibers with water jets, the nozzle bar should have a low total pressure loss, and the nozzle bar should be developed so that the water jets generated via the bores in the nozzle strip over the entire width of the nozzle bar should be designed as identical to one another as possible. Furthermore, the nozzle bar should be designed to be as space-saving as possible, without leaving the preceding objects of the invention unsolved.
  • the invention includes the technical teaching that the distance between the nozzle strip and the central axis of the pressure distribution chamber has a value of 40 mm to 50 mm.
  • the design of the nozzle bar with a distance of the nozzle strip from the central axis of the pressure distribution chamber with a value within the value limits according to the invention has shown that this creates a depth of the slot at which the flow of the jet is calmed and evened shortly before the water hits the nozzle strip Water is achieved without being associated with a significant loss of pressure.
  • the result is with an increasing depth of the slot, a further improved equalization of the flow and the pressure of the water on the inside in front of the bores in the nozzle strip, so that the deepest possible slot is desirable.
  • the depth of the slot should not be chosen too great, since this would undesirably increase the overall height of the nozzle bar and the flow resistance of the water when flowing through the slot would continue to grow undesirably.
  • the result is an ideal distance between the nozzle strip and the central axis of the pressure distribution chamber with a value of 40 mm to 50 mm.
  • a particular advantage is obtained when the distance between the nozzle strip and the central axis of the pressure distribution chamber is 45mm to 47mm.
  • the best determined value of the distance between the nozzle strip and the central axis of the pressure distribution chamber is 46mm. It is also and in particular advantageous if the depth of the slot protruding from the pressure distribution chamber has a value of 27 mm to 30 mm.
  • the pressure chamber has a diameter of 80 mm and if the pressure distribution chamber has a diameter of 35 mm.
  • the geometric design of the nozzle bar with the pressure chamber and the pressure distribution chamber with corresponding diameters of a circular cross-section, especially in connection with the slot designed according to the invention, has a surprisingly positive effect on the equalization of the outlet pressure across the slot in the direction of the nozzle strip with a simultaneously low total pressure loss in the nozzle bar .
  • the nozzle bar is designed in particular for feeding in water at a speed of up to approximately 8 m / s at a pre-pressure of 250 bar. Due to the proportions of the pressure chamber and the pressure distribution chamber This results in an advantageous overflow of the water through the flow bores in the partition wall of, for example, up to 11 m / s.
  • a further improvement in the design of the slot results when it has a width of 8mm to 12mm and / or a width of 10mm.
  • the upper part has a spring projection which protrudes into a groove-like recess in the lower part and wherein the slot extends into the spring projection.
  • the slot can be formed with an optimal depth, without the overall height being increased by a greater depth of the slot in the case of a lower part adjoining the upper part.
  • a constriction adjoining the arrangement of the nozzle strip is made in the lower part and / or that a constriction adjoining the arrangement of the nozzle strip has a gap of 2mm to 3mm. Due to the narrow gap, the water jets are directed even more strongly towards the textile goods.
  • the distance between the central axis of the pressure chamber and the central axis of the pressure distribution chamber has a value of 85mm to 95mm and / or a value of 92mm.
  • an impact body which is arranged cylindrically in the pressure distribution chamber, the impact body having an elongated cylindrical shape and a diameter of 20 mm to 25 mm and / or a diameter of 22.5 mm.
  • the impact body is received at its ends of its elongated cylindrical shape and / or the impact body is distributed over its length Spacers, by means of which the impact body is held centrally arranged in the pressure distribution chamber.
  • particularly advantageous flow conditions result in the pressure distribution chamber if the impact body is arranged centrally in the pressure distribution chamber.
  • the impact body forms the same distance from the wall of the pressure distribution chamber over its entire circumference, so that the flow cross section of the water from the flow bores to the slot around the impact body is essentially constant. It was found that with such a configuration of the impact body and its arrangement in the pressure distribution chamber, only minimal or no vortex formation occurs. Consequently, the pressure loss is also minimized with the best possible pressure distribution over the length of the nozzle bar.
  • the pressure chamber in the upper part is closed on at least one of its end sides of the upper part with a closure element, and a closure element has the opening for the water feed into the pressure chamber. It is also conceivable that the pressure chamber is closed on the side opposite the closure element with the opening by the material of the upper part. For manufacturing reasons, however, it is advantageous if the upper part has an essentially identical material cross-section over its entire length. Furthermore, it is advantageous if the pressure distribution chamber in the upper part is also closed with closure elements on its opposite end sides of the upper part. The impact body can be received with its ends between the closure elements with particular advantage. If the impact body has to be removed from the pressure distribution chamber for cleaning purposes, for example, it is sufficient to detach one of the two closure elements from the end faces of the upper part.
  • Figure 1 shows a cross-sectional view through a nozzle bar 1 for processing fibers, for example a textile web, with water jets
  • Figure 2 shows a cross-sectional view through the nozzle bar 1 along the section line AA, the section plane AA being transverse to the section plane through the nozzle bar 1 according to FIG Figure 1 runs.
  • the nozzle bar 1 is viewed together Figures 1 and 2 described in more detail.
  • the housing of the nozzle bar 1 has an upper part 10 which is screwed to the lower part 16 many times over the length by means of screws 24.
  • the upper part 10 has two bores 11 and 13 running in the longitudinal direction, of which the upper bore forms a pressure chamber 11 and the lower bore forms a pressure distribution chamber 13. Both chambers 11 and 13 are designed to be open on the end sides of the upper part 10 and are closed in a liquid-tight manner by closure elements 22 for the pressure chamber 11 and by closure elements 23 for the pressure distribution chamber 13.
  • the closure element 22 for closing the pressure chamber 11 has a pressure measuring means 25, and that Closure element 22 for closing the pressure chamber 11 on the right side has an opening 12 through which water can be fed into the pressure chamber 11 with a water connection (not shown in detail).
  • the two chambers 11 and 13 are separated from one another by an intermediate wall 15, the intermediate wall 15 being formed by a cross-sectional area of the upper part 10.
  • an intermediate wall 15 being formed by a cross-sectional area of the upper part 10.
  • a large number of flow bores 14 in the partition 15 connect the two chambers 11 and 13, so that water flowing into the pressure chamber 11 flows evenly over the length of the nozzle bar 1 into the pressure distribution chamber 13.
  • the pressure distribution chamber 13 is open at the bottom, through the slot 19, which is narrow compared to the diameter of the bore of the pressure distribution chamber 13 and which also extends over the length of the nozzle bar 1.
  • the upper part 10 is screwed tightly and liquid-tight to the lower part 16 with the screws 24.
  • the tightness is brought about by the O-ring 26, which is seated in a groove running around the slot 19.
  • a spring projection 27 is seated in a corresponding groove in the lower part 16, and in the groove there is a further O-ring 28, which serves to seal the nozzle strip 17.
  • FIG. 1 shows the nozzle strip 17, which has a multiplicity of bores 18, the bores 18 penetrating the nozzle strip 17 at the same distance from one another in the longitudinal direction.
  • the pressurized water from the pressure distribution chamber 13 and from the adjoining slot 19 acts on the nozzle strip 17 on the inside, and the water penetrates through the bores 18 and forms a water jet emerging from each of the bores 18.
  • the water flowing under pressure through the opening 12 in the closure element 22 into the pressure chamber 11 can pass evenly through the multitude of flow bores 14 in the partition 15 and reach the pressure distribution chamber 13.
  • a plurality of spacers 29 are arranged on the impact body 20, which are designed like a disk and center the impact body 20 in the pressure distribution chamber 13.
  • the spacers 29 sit with their outer contour on the inside in the pressure distribution chamber 13 and are thus supported against the inner wall.
  • the spacers 29 can sit firmly on the rod-shaped or cylindrical impact body 20.
  • the diameter of the pressure chamber 11 is 80 mm, and the diameter of the pressure distribution chamber 13 is 35 mm.
  • the chambers 11 and 13 have an im over the entire length of the nozzle bar 1 Essentially cylindrical cross-section.
  • the distance between the central axes of the two pressure chambers 11 and 13 is 92 mm in this exemplary embodiment. This results in an ideal length of the flow bores 14 for the most homogeneous possible, uniform inflow of the pressurized water into the pressure distribution chamber 13 over the extent of the nozzle bar 1.
  • the arrangement of the impact body 20 centrally in the pressure distribution chamber 13 results in a likewise homogenized and preferably low-turbulence
  • the pressurized water flows into the slot 19 adjoining the pressure distribution chamber 13, so that the nozzle strip 17 is exposed to water essentially uniformly over its entire length.
  • the slot 19 has a geometric configuration which is characterized by a greater depth t of the slot 19.
  • the greater depth t is achieved in that the distance A of the nozzle strip 17 to the central axis M of the pressure distribution chamber 13 has a value of 40mm to 50mm, in this exemplary embodiment in particular 46.1mm, which is achieved in particular by a spring projection 27 which the slot 19 extended and which protrudes into a recess 30 which is made in the lower part 16, as in Fig. 2 shown.
  • the width of the slot 19 is, for example, about 10 mm, and the length of the slot 19 in the longitudinal direction of the nozzle bar 1 is 3660 mm.
  • the bores 18 in the nozzle strip 17 are evenly distributed over the length of the slot 19, so that a uniform curtain of water over the length of the nozzle bar 1 results when the flow is the same in the bores 18.
  • constriction 21 adjoining the arrangement of the nozzle strip 17 has a gap size of 2.5 mm to 3 mm, in particular 2.8 mm.

Description

Die vorliegende Erfindung betrifft einen Düsenbalken für die Bearbeitung von Fasern mit Wasserstrahlen, aufweisend ein sich länglich erstreckendes Oberteil, in dem eine länglich ausgebildete Druckkammer eingebracht ist, wobei die Druckkammer eine Endseite mit einer Öffnung zur Einspeisung von Wasser und eine gegenüberliegende geschlossene Endseite aufweist, und wobei im Oberteil eine Druckverteilkammer eingebracht ist, die sich parallel zur Druckkammer erstreckt und wobei über der Länge des Oberteils verteilt mehrere Durchflussbohrungen in der Zwischenwandung zwischen der Druckkammer und der Druckverteilkammer eingebracht sind, durch die das Wasser von der Druckkammer in die Druckverteilkammer führbar ist, und aufweisend ein sich länglich erstreckendes Unterteil, das am Oberteil flüssigkeitsdicht angeordnet ist, und wobei ein Düsenstreifen mit Bohrungen für den Wasseraustritt im oder am Unterteil aufgenommen ist, und wobei im Oberteil ein Schlitz eingebracht ist, der sich zwischen der Druckverteilkammer und dem Düsenstreifen zur Wasserbeaufschlagung des Düsenstreifens erstreckt.The present invention relates to a nozzle bar for processing fibers with water jets, having an elongated upper part in which an elongated pressure chamber is introduced, the pressure chamber having one end side with an opening for the feed of water and an opposite closed end side, and wherein a pressure distribution chamber is introduced in the upper part, which extends parallel to the pressure chamber and wherein several flow bores are distributed over the length of the upper part in the partition between the pressure chamber and the pressure distribution chamber, through which the water can be guided from the pressure chamber into the pressure distribution chamber, and having an elongated lower part which is arranged on the upper part in a liquid-tight manner, and wherein a nozzle strip with bores for the water outlet is received in or on the lower part, and wherein a slot is made in the upper part which extends between the Pressure distribution chamber and the nozzle strip for the application of water to the nozzle strip.

Aus der DE 10 2005 055 939 B3 ist ein Düsenbalken für die Bearbeitung einer textilen Ware mit Wasserstrahlen bekannt. Die Bearbeitung der textilen Ware erfolgt dabei mit einer Vielzahl von in einer Reihe erzeugten Wasserstrahlen, die sich beispielsweise über die gesamte Breite einer unter den Wasserstrahlen bewegten textilen Warenbahn erstrecken und auf diese einwirken. Hierfür weist der Düsenbalken einen Wasseranschluss auf, mit dem über die Öffnung Wasser in die Druckkammer eingespeist wird. Das Wasser gelangt beispielsweise mit einem erzeugten Vordruck von 250bar durch die Öffnung in die Druckkammer, wobei die Einströmgeschwindigkeit des Wassers durch die Öffnung beispielsweise bis zu 8m/s beträgt, und etwa in der Mitte der Druckkammer weist die Strömungsgeschwindigkeit noch einen Wert von 2,5m/s auf. Um eine erhöhte Wirbelbildung des Wassers in der Druckkammer zu vermeiden, hat sich gezeigt, dass die einseitige Einspeisung von Wasser über eine Öffnung in die Druckkammer vorteilhaft ist. Der Düsenbalken ist dabei länglich und damit schlank ausgebildet, wobei der Düsenbalken im Wesentlichen gebildet wird durch das länglich ausgebildete Oberteil und das länglich ausgebildete Unterteil. Das Unterteil ist dabei an der Seite des Oberteils flüssigkeitsdicht angeordnet, die zur textilen Ware hin weist, und über das Unterteil und über den im Unterteil oder am Unterteil angeordneten Düsenstreifen werden die Wasserstrahlen durch die Vielzahl der Bohrungen erzeugt, die in dem Düsenstreifen eingebracht sind. An die Druckverteilkammer schließt sich unterseitig ein Schlitz an, der eine konstante Breite aufweist und der bodenseitig mit dem Düsenstreifen abschließt.From the DE 10 2005 055 939 B3 a nozzle bar for processing textile goods with water jets is known. The processing of the textile goods takes place with a large number of water jets generated in a row, which for example extend over the entire width of a textile material web moving under the water jets and act on it. For this purpose, the nozzle bar has a water connection with which water enters the water through the opening Pressure chamber is fed. The water enters the pressure chamber through the opening with a pre-pressure of 250 bar, for example, the inflow speed of the water through the opening is up to 8 m / s, and approximately in the middle of the pressure chamber the flow speed is still 2.5 m / s on. In order to avoid increased eddy formation of the water in the pressure chamber, it has been shown that the one-sided feeding of water into the pressure chamber via an opening is advantageous. The nozzle bar is elongated and therefore slim, the nozzle bar being essentially formed by the elongated upper part and the elongated lower part. The lower part is arranged in a liquid-tight manner on the side of the upper part that faces the textile goods, and the water jets are generated through the large number of bores that are made in the nozzle strip via the lower part and via the nozzle strip arranged in the lower part or on the lower part. On the underside of the pressure distribution chamber there is a slot which has a constant width and which closes with the nozzle strip on the bottom.

Das vorrangige Ziel bei der Weiterentwicklung von Düsenbalken für die Bearbeitung von textilen Waren besteht darin, eine möglichst gleichmäßige Ausbildung der Wasserstrahlen durch die Bohrungen über der gesamten Länge des Düsenstreifens zu erzeugen, wofür der Druck über der großen Länge des Düsenbalkens auf der Innenseite des Düsenstreifens im Wesentlichen gleich sein sollte. Hierfür wird die Druckkammer getrennt von der Druckverteilkammer ausgebildet, und zwischen der Druckkammer und der Druckverteilkammer erstrecken sich mehrere Durchflussöffnungen in der Zwischenwandung zwischen der Druckkammer und der Druckverteilkammer. Dadurch vergleichmäßigt sich der Druck über der Länge des Düsenbalkens bereits in der Druckverteilkammer, sodass nicht nahe der Einströmöffnung zur Einspeisung des Wassers ein hoher Druck und auf der gegenüberliegenden, fernen Seite zur Einspeisung ein niedrigerer Druck des Wassers vor dem Düsenstreifen vorherrscht. Erst durch eine gleichmäßige Ausbildung der Wasserstrahlen über der gesamten Breite des Düsenbalkens kann eine gleichmäßige Bearbeitung der textilen Ware sichergestellt werden.The primary goal in the further development of nozzle bars for the processing of textile goods is to create the most uniform possible formation of the water jets through the holes over the entire length of the nozzle strip, for which the pressure over the great length of the nozzle bar on the inside of the nozzle strip Should be essentially the same. For this purpose, the pressure chamber is formed separately from the pressure distribution chamber, and between the pressure chamber and the pressure distribution chamber a plurality of throughflow openings extend in the partition between the pressure chamber and the pressure distribution chamber. As a result, the pressure is evened out over the length of the nozzle bar in the pressure distribution chamber, so that it is not close to the inflow opening Infeed of the water a high pressure and on the opposite, distant side to the infeed, a lower pressure of the water prevails in front of the jet strip. Uniform processing of the textile goods can only be ensured if the water jets are formed uniformly over the entire width of the nozzle bar.

Die Vergleichmäßigung des Wasserdruckes innenseitig vor den Bohrungen im Düsenstreifen sollte allerdings mit einem möglichst geringen Gesamt-Druckverlust ausgebildet werden. In Anlagen, in denen derartige Düsenstreifen Verwendung finden, stehen die Düsenbalken dauerhaft unter Wasserbeaufschlagung, sodass jeder Druckverlust im Düsenbalken zugleich einen Energieverlust beim Betrieb der Anlage mit sich bringt. Folglich ist das Ziel beim Bau von Düsenbalken neben einer gleichmäßigen Ausbildung sämtlicher Wasserstrahlen ein möglichst geringer Druckverlust beginnend von der Öffnung zur Einspeisung von Wasser in die Druckkammer bis hin zur Ausströmung des Wassers aus den Bohrungen im Düsenstreifen.The equalization of the water pressure on the inside in front of the bores in the nozzle strip should, however, be implemented with the lowest possible total pressure loss. In systems in which such nozzle strips are used, the nozzle bars are permanently exposed to water, so that every loss of pressure in the nozzle bar also entails a loss of energy when operating the system. Consequently, the goal when building nozzle bars is, in addition to a uniform formation of all water jets, the lowest possible pressure loss, starting from the opening for feeding water into the pressure chamber to the outflow of water from the bores in the nozzle strip.

Die EP 0 725 175 B1 offenbart einen Düsenbalken zur Bearbeitung einer textilen Ware mit Wasserstrahlen, und zur Vergleichmäßigung des Wasserdrucks wird vor den Austrittsbohrungen im Düsenstreifen der Schlitz so ausgeführt, dass eine verstärkte Verwirbelung des Wassers für eine gleichmäßige Beaufschlagung des Düsenstreifens von der Innenseite erzeugt wird, womit jedoch ein erhöhter Druckverlust einhergeht.The EP 0 725 175 B1 discloses a nozzle bar for processing a textile product with water jets, and in order to equalize the water pressure, the slot in front of the outlet bores in the nozzle strip is designed in such a way that an increased swirling of the water is generated for an even exposure of the nozzle strip from the inside, which, however, increases the pressure loss goes hand in hand.

Weiterhin ist es wünschenswert, einen Düsenbalken konstruktiv möglichst einfach auszuführen und eine einfache Wartung zu ermöglichen. Beispielsweise müssen Düsenbalken in regelmäßigen Zeitabständen gereinigt werden, insbesondere muss der Düsenstreifen auf einfache Weise entnommen werden können. Bei einer strömungsoptimierten Ausgestaltung des Oberteils mit der Druckkammer und der Druckverteilkammer hat sich gezeigt, dass geometrische Anpassungen eine weitere Minderung des Druckverlustes ermöglichen können, sodass beispielsweise der schmale Schlitz zur Ausmündung der Druckverteilkammer an den Düsenstreifen optimiert werden kann, wie in der EP 0 725 175 B1 beschrieben.Furthermore, it is desirable to design a nozzle bar as simple as possible and to enable simple maintenance. For example, nozzle bars must be cleaned at regular intervals, and in particular the nozzle strip must be easy to remove. With a flow-optimized configuration of the upper part with the pressure chamber and the Pressure distribution chamber has been shown that geometrical adjustments can enable a further reduction in pressure loss, so that, for example, the narrow slot at the outlet of the pressure distribution chamber to the nozzle strip can be optimized, as in FIG EP 0 725 175 B1 described.

Aufgabe der Erfindung ist die weitere Verbesserung eines Düsenbalkens für die Bearbeitung von Fasern mit Wasserstrahlen, wobei der Düsenbalken einen geringen Gesamt-Druckverlust aufweisen soll, und wobei der Düsenbalken so weitergebildet werden soll, dass die über die Bohrungen im Düsenstreifen erzeugten Wasserstrahlen über der gesamten Breite des Düsenbalkens möglichst zueinander gleich ausgebildet werden sollen. Weiterhin sollte der Düsenbalken eine möglichst bauraumminimale Ausgestaltung erfahren, ohne die vorgelagerten Aufgaben der Erfindung ungelöst zu belassen.The object of the invention is to further improve a nozzle bar for processing fibers with water jets, the nozzle bar should have a low total pressure loss, and the nozzle bar should be developed so that the water jets generated via the bores in the nozzle strip over the entire width of the nozzle bar should be designed as identical to one another as possible. Furthermore, the nozzle bar should be designed to be as space-saving as possible, without leaving the preceding objects of the invention unsolved.

Diese Aufgabe der Erfindung wird ausgehend von einem Düsenbalken für die Bearbeitung von Fasern mit Wasserstrahlen gemäß dem Oberbegriff des Anspruches 1 in Verbindung mit den kennzeichnenden Merkmalen gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object of the invention is achieved on the basis of a nozzle bar for processing fibers with water jets according to the preamble of claim 1 in conjunction with the characterizing features. Advantageous further developments of the invention are given in the dependent claims.

Die Erfindung schließt die technische Lehre ein, dass der Abstand des Düsenstreifens zur Mittelachse der Druckverteilkammer einen Wert von 40mm bis 50mm aufweist.The invention includes the technical teaching that the distance between the nozzle strip and the central axis of the pressure distribution chamber has a value of 40 mm to 50 mm.

Die der Ausgestaltung des Düsenbalkens mit einem Abstand des Düsenstreifens zur Mittelachse der Druckverteilkammer mit einem Wert innerhalb der erfindungsgemäßen Wertegrenzen hat gezeigt, dass dadurch eine Tiefe des Schlitzes entsteht, bei der noch kurz vor Auftreffen des Wassers auf den Düsenstreifen eine Beruhigung und Vergleichmäßigung der Strömung des Wassers erzielt wird, ohne dass damit ein nennenswerter Druckverlust einhergeht. Im Ergebnis ergibt sich mit einer zunehmenden Tiefe des Schlitzes eine weiter verbesserte Vergleichmäßigung der Strömung und des Druckes des Wassers innenseitig vor den Bohrungen im Düsenstreifen, sodass ein möglichst tiefer Schlitz wünschenswert ist. Auf der anderen Seite sollte die Tiefe des Schlitzes nicht zu groß gewählt werden, da sich damit die Bauhöhe des Düsenbalkens unerwünscht vergrößern würde und der Strömungswiderstand des Wassers bei der Durchströmung des Schlitzes würde unerwünscht weiter anwachsen. Somit ergibt sich vor dem Hintergrund der beiden Zielsetzungen ein idealer Abstand des Düsenstreifens zur Mittelachse der Druckverteilkammer mit einem Wert von 40mm bis 50mm.The design of the nozzle bar with a distance of the nozzle strip from the central axis of the pressure distribution chamber with a value within the value limits according to the invention has shown that this creates a depth of the slot at which the flow of the jet is calmed and evened shortly before the water hits the nozzle strip Water is achieved without being associated with a significant loss of pressure. The result is with an increasing depth of the slot, a further improved equalization of the flow and the pressure of the water on the inside in front of the bores in the nozzle strip, so that the deepest possible slot is desirable. On the other hand, the depth of the slot should not be chosen too great, since this would undesirably increase the overall height of the nozzle bar and the flow resistance of the water when flowing through the slot would continue to grow undesirably. Given the two objectives, the result is an ideal distance between the nozzle strip and the central axis of the pressure distribution chamber with a value of 40 mm to 50 mm.

Ein besonderer Vorteil ergibt sich, wenn der Abstand des Düsenstreifens zur Mittelachse der Druckverteilkammer einen Wert von 45mm bis 47mm aufweist. Der beste bestimmte Wert des Abstandes des Düsenstreifens zur Mittelachse der Druckverteilkammer beträgt 46mm. Auch und insbesondere ist es von Vorteil, wenn die von der Druckverteilkammer abragende Tiefe des Schlitzes einen Wert von 27mm bis 30mm aufweist.A particular advantage is obtained when the distance between the nozzle strip and the central axis of the pressure distribution chamber is 45mm to 47mm. The best determined value of the distance between the nozzle strip and the central axis of the pressure distribution chamber is 46mm. It is also and in particular advantageous if the depth of the slot protruding from the pressure distribution chamber has a value of 27 mm to 30 mm.

In Verbindung mit einer optimalen Ausgestaltung des Düsenstreifens ist es von weiterem Vorteil, wenn die Druckkammer einen Durchmesser von 80mm aufweist und wenn die Druckverteilkammer einen Durchmesser von 35mm aufweist. Die geometrische Ausgestaltung des Düsenbalkens mit der Druckkammer und der Druckverteilkammer mit entsprechenden Durchmessern eines Kreisquerschnitts ergibt insbesondere in Verbindung mit dem erfindungsgemäß ausgebildeten Schlitz einen überraschend positiven Effekt auf die Vergleichmäßigung des Austrittsdruckes über den Schlitz in Richtung zum Düsenstreifen bei einem zugleich geringen Gesamt-Druckverlust im Düsenbalken. Der Düsenbalken ist dabei insbesondere ausgelegt für die Einspeisung von Wasser mit einer Geschwindigkeit bis zu etwa 8m/s bei einem Vordruck von 250bar. Durch die Größenverhältnisse der Druckkammer und der Druckverteilkammer ergibt sich eine vorteilhafte Überströmung des Wassers durch die Durchflussbohrungen in der Zwischenwandung von beispielsweise bis zu 11m/s.In connection with an optimal design of the nozzle strip, it is of further advantage if the pressure chamber has a diameter of 80 mm and if the pressure distribution chamber has a diameter of 35 mm. The geometric design of the nozzle bar with the pressure chamber and the pressure distribution chamber with corresponding diameters of a circular cross-section, especially in connection with the slot designed according to the invention, has a surprisingly positive effect on the equalization of the outlet pressure across the slot in the direction of the nozzle strip with a simultaneously low total pressure loss in the nozzle bar . The nozzle bar is designed in particular for feeding in water at a speed of up to approximately 8 m / s at a pre-pressure of 250 bar. Due to the proportions of the pressure chamber and the pressure distribution chamber This results in an advantageous overflow of the water through the flow bores in the partition wall of, for example, up to 11 m / s.

Eine weitere Verbesserung der Ausführung des Schlitzes ergibt sich, wenn dieser eine Breite von 8mm bis 12mm und/oder eine Breite von 10mm aufweist. Für eine einfache konstruktive Ausführung des Düsenbalkens kann vorgesehen sein, dass das Oberteil einen Federvorsprung aufweist, der in eine nutartige Vertiefung im Unterteil hineinragt und wobei der Schlitz sich in den Federvorsprung hinein erstreckt. Hierdurch kann bei einer geringen Gesamthöhe des Düsenbalkens der Schlitz mit einer optimalen Tiefe ausgebildet werden, ohne dass sich bei einem sich an das Oberteil anschließenden Unterteil die Gesamthöhe durch eine größere Tiefe des Schlitzes vergrößert.A further improvement in the design of the slot results when it has a width of 8mm to 12mm and / or a width of 10mm. For a simple structural design of the nozzle bar it can be provided that the upper part has a spring projection which protrudes into a groove-like recess in the lower part and wherein the slot extends into the spring projection. In this way, with a low overall height of the nozzle bar, the slot can be formed with an optimal depth, without the overall height being increased by a greater depth of the slot in the case of a lower part adjoining the upper part.

Weiterhin vorteilhaft ist, dass im Unterteil eine sich an die Anordnung des Düsenstreifens anschließende Verengung eingebracht ist und/oder dass eine sich an die Anordnung des Düsenstreifens anschließende Verengung ein Spaltmaß von 2mm bis 3mm aufweist. Durch das enge Spaltmaß werden die Wasserstrahlen noch stärker gerichtet auf die textile Ware gelenkt.It is also advantageous that a constriction adjoining the arrangement of the nozzle strip is made in the lower part and / or that a constriction adjoining the arrangement of the nozzle strip has a gap of 2mm to 3mm. Due to the narrow gap, the water jets are directed even more strongly towards the textile goods.

Für eine optimierte Gesamtströmung im Düsenbalken ist es von Vorteil, wenn der Abstand zwischen der Mittelachse der Druckkammer und der Mittelachse der Druckverteilkammer einen Wert von 85mm bis 95mm und/oder einen Wert von 92mm aufweist.For an optimized overall flow in the nozzle bar, it is advantageous if the distance between the central axis of the pressure chamber and the central axis of the pressure distribution chamber has a value of 85mm to 95mm and / or a value of 92mm.

Mit weiterem Vorteil ist ein Prallkörper vorgesehen, der zylindrisch in der Druckverteilkammer angeordnet ist, wobei der Prallkörper eine längliche Zylinderform aufweist und einen Durchmesser von 20mm bis 25mm und/oder einen Durchmesser von 22,5mm aufweist. Mit besonderem Vorteil ist der Prallkörper an seinen Enden seiner länglichen Zylinderform aufgenommen und/oder der Prallkörper weist über seiner Länge verteilt Abstandshalter auf, mittels der der Prallkörper in der Druckverteilkammer mittig angeordnet gehalten ist. Wie vorstehend angegeben, ergeben sich besonders vorteilhafte Strömungsverhältnisse in der Druckverteilkammer, wenn der Prallkörper zentrisch in der Druckverteilkammer angeordnet ist. Mit anderen Worten bildet der Prallkörper vollumfänglich einen gleichen Abstand zur Wandung der Druckverteilkammer, sodass der Durchflussquerschnitt des Wassers von den Durchflussbohrungen bis in den Schlitz hinein um den Prallkörper im Wesentlichen gleichbleibend ausgebildet ist. Dabei konnte festgestellt werden, dass bei einer solchen Ausgestaltung des Prallkörpers und seiner Anordnung in der Druckverteilkammer eine nur minimale bis gar keine Wirbelbildung entsteht. Folgerichtig ist auch der Druckverlust bei einer möglichst optimalen Druckverteilung über der Länge des Düsenbalkens minimiert.With a further advantage, an impact body is provided which is arranged cylindrically in the pressure distribution chamber, the impact body having an elongated cylindrical shape and a diameter of 20 mm to 25 mm and / or a diameter of 22.5 mm. With particular advantage, the impact body is received at its ends of its elongated cylindrical shape and / or the impact body is distributed over its length Spacers, by means of which the impact body is held centrally arranged in the pressure distribution chamber. As indicated above, particularly advantageous flow conditions result in the pressure distribution chamber if the impact body is arranged centrally in the pressure distribution chamber. In other words, the impact body forms the same distance from the wall of the pressure distribution chamber over its entire circumference, so that the flow cross section of the water from the flow bores to the slot around the impact body is essentially constant. It was found that with such a configuration of the impact body and its arrangement in the pressure distribution chamber, only minimal or no vortex formation occurs. Consequently, the pressure loss is also minimized with the best possible pressure distribution over the length of the nozzle bar.

Ein weiterer Vorteil wird erreicht, wenn die Druckkammer im Oberteil an wenigstens einer ihrer Endseiten des Oberteils mit einem Verschlusselement verschlossen ist, und wobei ein Verschlusselement die Öffnung für die Wassereinspeisung in die Druckkammer aufweist. Dabei ist es auch denkbar, dass die Druckkammer auf der dem Verschlusselement mit der Öffnung gegenüberliegenden Seite durch das Material des Oberteils verschlossen ist. Aus fertigungstechnischen Gründen ist es jedoch vorteilhaft, wenn das Oberteil über seiner gesamten Länge einen im Wesentlichen gleichen Materialquerschnitt aufweist. Weiterhin ist es vorteilhaft, wenn auch die Druckverteilkammer im Oberteil an ihren gegenüberliegenden Endseiten des Oberteils mit Verschlusselementen verschlossen ist. Mit besonderem Vorteil kann dabei der Prallkörper mit seinen Enden zwischen den Verschlusselementen aufgenommen werden. Muss der Prallkörper beispielsweise zu Reinigungszwecken der Druckverteilkammer aus dieser herausgenommen werden, so ist es bereits hinreichend, eines der beiden Verschlusselemente von den Endseiten des Oberteils zu lösen.Another advantage is achieved if the pressure chamber in the upper part is closed on at least one of its end sides of the upper part with a closure element, and a closure element has the opening for the water feed into the pressure chamber. It is also conceivable that the pressure chamber is closed on the side opposite the closure element with the opening by the material of the upper part. For manufacturing reasons, however, it is advantageous if the upper part has an essentially identical material cross-section over its entire length. Furthermore, it is advantageous if the pressure distribution chamber in the upper part is also closed with closure elements on its opposite end sides of the upper part. The impact body can be received with its ends between the closure elements with particular advantage. If the impact body has to be removed from the pressure distribution chamber for cleaning purposes, for example, it is sufficient to detach one of the two closure elements from the end faces of the upper part.

Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung anhand der Figuren näher dargestellt. Es zeigen:

Figur 1
eine Querschnittsansicht durch einen Düsenbalken für die Bearbeitung einer textilen Ware mit Wasserstrahlen, wobei der Querschnitt längs durch den Düsenbalken verläuft und
Figur 2
eine Querschnittsansicht durch den Düsenbalken gemäß Figur 1 entlang der dargestellten Schnittlinie A-A.
Further measures improving the invention are shown in more detail below together with the description of a preferred exemplary embodiment of the invention with reference to the figures. Show it:
Figure 1
a cross-sectional view through a nozzle bar for processing a textile product with water jets, the cross section running longitudinally through the nozzle bar and
Figure 2
a cross-sectional view through the nozzle bar according to FIG Figure 1 along the illustrated section line AA.

Figur 1 zeigt eine Querschnittsansicht durch einen Düsenbalken 1 für die Bearbeitung von Fasern, beispielsweise einer textilen Warenbahn, mit Wasserstrahlen, und Figur 2 zeigt entlang der Schnittlinie A-A eine Querschnittsansicht durch den Düsenbalken 1, wobei die Schnittebene A-A quer zur Schnittebene durch den Düsenbalken 1 gemäß Figur 1 verläuft. Im Folgenden wird der Düsenbalken 1 in Zusammenschau der Figuren 1 und 2 näher beschrieben. Figure 1 shows a cross-sectional view through a nozzle bar 1 for processing fibers, for example a textile web, with water jets, and Figure 2 shows a cross-sectional view through the nozzle bar 1 along the section line AA, the section plane AA being transverse to the section plane through the nozzle bar 1 according to FIG Figure 1 runs. In the following, the nozzle bar 1 is viewed together Figures 1 and 2 described in more detail.

Das Gehäuse des Düsenbalkens 1 weist ein Oberteil 10 auf, das mit dem Unterteil 16 vielfach über die Länge durch Schrauben 24 verschraubt ist. Das Oberteil 10 weist in Längsrichtung verlaufend zwei Bohrungen 11 und 13 auf, von denen die obere Bohrung eine Druckkammer 11 und die untere Bohrung eine Druckverteilkammer 13 bildet. Beide Kammern 11 und 13 sind an den Endseiten des Oberteils 10 offen ausgeführt und durch Verschlusselemente 22 für die Druckkammer 11 und durch Verschlusselemente 23 für die Druckverteilkammer 13 flüssigkeitsdicht verschlossen. Das Verschlusselement 22 zum Verschluss der Druckkammer 11 weist ein Druckmessmittel 25 auf, und das Verschlusselement 22 zum Verschluss der Druckkammer 11 auf der rechten Seite weist eine Öffnung 12 auf, über die mit einem nicht näher dargestellten Wasseranschluss Wasser in die Druckkammer 11 eingespeist werden kann.The housing of the nozzle bar 1 has an upper part 10 which is screwed to the lower part 16 many times over the length by means of screws 24. The upper part 10 has two bores 11 and 13 running in the longitudinal direction, of which the upper bore forms a pressure chamber 11 and the lower bore forms a pressure distribution chamber 13. Both chambers 11 and 13 are designed to be open on the end sides of the upper part 10 and are closed in a liquid-tight manner by closure elements 22 for the pressure chamber 11 and by closure elements 23 for the pressure distribution chamber 13. The closure element 22 for closing the pressure chamber 11 has a pressure measuring means 25, and that Closure element 22 for closing the pressure chamber 11 on the right side has an opening 12 through which water can be fed into the pressure chamber 11 with a water connection (not shown in detail).

Die beiden Kammern 11 und 13 sind durch eine Zwischenwandung 15 voneinander getrennt, wobei die Zwischenwandung 15 durch einen Querschnittsbereich des Oberteils 10 gebildet ist. Über die Länge des Düsenbalkens 1 verbindet eine große Anzahl von Durchflussbohrungen 14 in der Zwischenwandung 15 die beiden Kammern 11 und 13, sodass in die Druckkammer 11 einströmendes Wasser gleichmäßig verteilt über die Länge des Düsenbalkens 1 in die Druckverteilkammer 13 überströmt. Die Druckverteilkammer 13 ist nach unten offen, und zwar durch den gegenüber dem Durchmesser der Bohrung der Druckverteilkammer 13 schmal ausgeführten Schlitz 19, der sich ebenfalls über die Länge des Düsenbalkens 1 erstreckt.The two chambers 11 and 13 are separated from one another by an intermediate wall 15, the intermediate wall 15 being formed by a cross-sectional area of the upper part 10. Over the length of the nozzle bar 1, a large number of flow bores 14 in the partition 15 connect the two chambers 11 and 13, so that water flowing into the pressure chamber 11 flows evenly over the length of the nozzle bar 1 into the pressure distribution chamber 13. The pressure distribution chamber 13 is open at the bottom, through the slot 19, which is narrow compared to the diameter of the bore of the pressure distribution chamber 13 and which also extends over the length of the nozzle bar 1.

Gemäß Figur 2 ist das Oberteil 10 mit dem Unterteil 16 fest und flüssigkeitsdicht mit den Schrauben 24 verschraubt. Die Dichtigkeit wird durch den O-Ring 26 bewirkt, der in einer um den Schlitz 19 verlaufenden Nut einsitzt. Ein Federvorsprung 27 sitzt in einer korrespondierenden Nut im Unterteil 16 ein, und in der Nut befindet sich ein weiterer O-Ring 28, der zur Abdichtung des Düsenstreifens 17 dient.According to Figure 2 the upper part 10 is screwed tightly and liquid-tight to the lower part 16 with the screws 24. The tightness is brought about by the O-ring 26, which is seated in a groove running around the slot 19. A spring projection 27 is seated in a corresponding groove in the lower part 16, and in the groove there is a further O-ring 28, which serves to seal the nozzle strip 17.

Die Querschnittsansicht in Figur 1 zeigt den Düsenstreifen 17, der eine Vielzahl von Bohrungen 18 aufweist, wobei die Bohrungen 18 in Längsrichtung zueinander gleich beabstandet den Düsenstreifen 17 durchsetzen. Das unter Druck stehende Wasser aus der Druckverteilkammer 13 und aus dem sich anschließenden Schlitz 19 beaufschlagt den Düsenstreifen 17 innenseitig, und das Wasser dringt durch die Bohrungen 18 hindurch und bildet einen aus jeder der Bohrungen 18 austretenden Wasserstrahl.The cross-sectional view in Figure 1 shows the nozzle strip 17, which has a multiplicity of bores 18, the bores 18 penetrating the nozzle strip 17 at the same distance from one another in the longitudinal direction. The pressurized water from the pressure distribution chamber 13 and from the adjoining slot 19 acts on the nozzle strip 17 on the inside, and the water penetrates through the bores 18 and forms a water jet emerging from each of the bores 18.

Durch die beschriebene Ausgestaltung des Düsenbalkens 1 kann das Wasser, das unter Druck stehend durch die Öffnung 12 im Verschlusselement 22 in die Druckkammer 11 einströmt, gleichverteilt durch die Vielzahl der Durchflussbohrungen 14 in der Zwischenwandung 15 hindurchtreten und in die Druckverteilkammer 13 gelangen. Durch die zylindrische Ausbildung des Prallkörpers 20, der zwischen den beiden Verschlusselementen 23 haltend aufgenommen ist, und der zentrisch in der Druckverteilkammer 13 einsitzt, wird eine weitere Homogenisierung der Druckverteilung entlang der Erstreckungsrichtung des Düsenbalkens 1 erreicht, sodass der Düsenstreifen 17 unter Beibehaltung eines minimalen Druckverlustes über seiner gesamten Länge im Wesentlichen mit dem gleichen Druck beaufschlagt wird. Über der Länge des Prallkörpers 20 verteilt sind mehrere Abstandshalter 29 am Prallkörper 20 angeordnet, die scheibenartig ausgestaltet sind und den Prallkörper 20 in der Druckverteilkammer 13 zentrieren. Dafür sitzen die Abstandshalter 29 mit ihrer Außenkontur innenseitig in der Druckverteilkammer 13 ein und stützen sich so gegen die Innenwand ab. Die Abstandshalter 29 können dafür fest auf dem stabförmigen oder zylinderförmigen Prallkörper 20 aufsitzen. Im Ergebnis ergeben sich bei einem Hindurchtreten des Wassers durch die Vielzahl der Bohrungen 18 gleichmäßige Wasserstrahlen, sodass die Bearbeitung der textilen Ware über der gesamten Breite der Ware gleichmäßig erfolgen kann. Auch wird der Vorteil erreicht, dass bei einer Demontage eines der Verschlusselemente 23 der Prallkörper 20 beispielsweise zu Reinigungszwecken aus der Druckverteilkammer 13 entnommen werden kann.As a result of the described configuration of the nozzle bar 1, the water flowing under pressure through the opening 12 in the closure element 22 into the pressure chamber 11 can pass evenly through the multitude of flow bores 14 in the partition 15 and reach the pressure distribution chamber 13. Due to the cylindrical design of the impact body 20, which is held between the two closure elements 23 and which sits centrally in the pressure distribution chamber 13, a further homogenization of the pressure distribution along the direction of extent of the nozzle bar 1 is achieved, so that the nozzle strip 17 while maintaining a minimal pressure loss is applied over its entire length with substantially the same pressure. Distributed over the length of the impact body 20, a plurality of spacers 29 are arranged on the impact body 20, which are designed like a disk and center the impact body 20 in the pressure distribution chamber 13. For this purpose, the spacers 29 sit with their outer contour on the inside in the pressure distribution chamber 13 and are thus supported against the inner wall. For this purpose, the spacers 29 can sit firmly on the rod-shaped or cylindrical impact body 20. As a result, when the water passes through the large number of bores 18, uniform water jets result, so that the textile goods can be processed evenly over the entire width of the goods. The advantage is also achieved that when one of the closure elements 23 is dismantled, the impact body 20 can be removed from the pressure distribution chamber 13, for example for cleaning purposes.

Der Durchmesser der Druckkammer 11 beträgt gemäß dem Ausführungsbeispiel 80mm, und der Durchmesser der Druckverteilkammer 13 beträgt 35mm. Die Kammern 11 und 13 weisen dabei über der gesamten Länge des Düsenbalken 1 hinweg einen im Wesentlichen zylindrischen Querschnitt auf. Der Abstand der Mittelachsen der beiden Druckkammern 11 und 13 beträgt in diesem Ausführungsbeispiel 92mm. Dadurch ergibt sich eine ideale Länge der Durchflussbohrungen 14 zur möglichst homogenen, über der Erstreckung des Düsenbalkens 1 gleichmäßigen Einströmung des unter Druck stehenden Wassers in die Druckverteilkammer 13. Durch die Anordnung des Prallkörpers 20 zentrisch in der Druckverteilkammer 13 ergibt sich eine ebenfalls homogenisierte und vorzugsweise verwirbelungsarme Einströmung des unter Druck stehenden Wassers in den sich an die Druckverteilkammer 13 anschließenden Schlitz 19, sodass der Düsenstreifen 17 über seiner gesamten Länge im Wesentlichen gleichmäßig mit Wasser beaufschlagt wird.According to the exemplary embodiment, the diameter of the pressure chamber 11 is 80 mm, and the diameter of the pressure distribution chamber 13 is 35 mm. The chambers 11 and 13 have an im over the entire length of the nozzle bar 1 Essentially cylindrical cross-section. The distance between the central axes of the two pressure chambers 11 and 13 is 92 mm in this exemplary embodiment. This results in an ideal length of the flow bores 14 for the most homogeneous possible, uniform inflow of the pressurized water into the pressure distribution chamber 13 over the extent of the nozzle bar 1. The arrangement of the impact body 20 centrally in the pressure distribution chamber 13 results in a likewise homogenized and preferably low-turbulence The pressurized water flows into the slot 19 adjoining the pressure distribution chamber 13, so that the nozzle strip 17 is exposed to water essentially uniformly over its entire length.

Der Schlitz 19 weist eine geometrische Ausgestaltung auf, die durch eine größere Tiefe t des Schlitzes 19 gekennzeichnet ist. Die größere Tiefe t wird dadurch erreicht, dass der Abstand A des Düsenstreifens 17 zur Mittelachse M der Druckverteilkammer 13 einen Wert von 40mm bis 50mm aufweist, in diesem Ausführungsbeispiel insbesondere 46,1mm, was insbesondere erreicht wird durch einen Federvorsprung 27, der den Schlitz 19 verlängert und der in eine Vertiefung 30 hineinragt, die im Unterteil 16 eingebracht ist, wie in Fig. 2 gezeigt. Damit ergibt sich eine Tiefe t des Schlitzes 19 von beispielsweise 28,6, ohne dass sich dadurch die gesamte Bauhöhe des Düsenbalkens 1 vergrößert. Die Breite des Schlitzes 19 beträgt beispielsweise etwa 10mm, und die Länge des Schlitzes 19 in Längsrichtung des Düsenbalkens 1 beträgt 3660mm. Über der Länge des Schlitzes 19 gleich verteilt sind die Bohrungen 18 im Düsenstreifen 17 angeordnet, sodass dass sich bei einer jeweils gleichen Anströmung der Bohrungen 18 ein gleichförmiger Wasservorhang über der Länge des Düsenbalkens 1 ergibt.The slot 19 has a geometric configuration which is characterized by a greater depth t of the slot 19. The greater depth t is achieved in that the distance A of the nozzle strip 17 to the central axis M of the pressure distribution chamber 13 has a value of 40mm to 50mm, in this exemplary embodiment in particular 46.1mm, which is achieved in particular by a spring projection 27 which the slot 19 extended and which protrudes into a recess 30 which is made in the lower part 16, as in Fig. 2 shown. This results in a depth t of the slot 19 of 28.6, for example, without increasing the overall height of the nozzle bar 1. The width of the slot 19 is, for example, about 10 mm, and the length of the slot 19 in the longitudinal direction of the nozzle bar 1 is 3660 mm. The bores 18 in the nozzle strip 17 are evenly distributed over the length of the slot 19, so that a uniform curtain of water over the length of the nozzle bar 1 results when the flow is the same in the bores 18.

Im Unterteil 16 ist eine sich an die Anordnung des Düsenstreifens 17 anschließende Verengung 21 eingebracht, wobei insbesondere vorgesehen ist, dass die sich an die Anordnung des Düsenstreifens 17 anschließende Verengung 21 ein Spaltmaß von 2,5mm bis 3mm, insbesondere von 2,8mm aufweist.In the lower part 16 a constriction 21 adjoining the arrangement of the nozzle strip 17 is introduced, in particular it is provided that the constriction 21 adjoining the arrangement of the nozzle strip 17 has a gap size of 2.5 mm to 3 mm, in particular 2.8 mm.

Die Erfindung beschränkt sich in ihrer Ausführung nicht auf das vorstehend angegebene bevorzugte Ausführungsbeispiel. Vielmehr ist eine Anzahl von Varianten denkbar, welche von der dargestellten Lösung auch bei grundsätzlich anders gearteten Ausführungen Gebrauch macht. Sämtliche aus den Ansprüchen, der Beschreibung oder den Zeichnungen hervorgehenden Merkmale und/oder Vorteile, einschließlich konstruktiver Einzelheiten oder räumlicher Anordnungen, können sowohl für sich als auch in den verschiedensten Kombinationen erfindungswesentlich sein.The embodiment of the invention is not limited to the preferred exemplary embodiment specified above. Rather, a number of variants are conceivable which make use of the solution shown even in the case of fundamentally different designs. All of the features and / or advantages arising from the claims, the description or the drawings, including structural details or spatial arrangements, can be essential to the invention both individually and in a wide variety of combinations.

BezugszeichenReference number

11
DüsenbalkenNozzle bar
1010
OberteilTop
1111
DruckkammerPressure chamber
1212
Öffnungopening
1313
DruckverteilkammerPressure distribution chamber
1414th
DurchflussbohrungFlow hole
1515th
ZwischenwandungPartition
1616
UnterteilLower part
1717th
DüsenstreifenJet strips
1818th
Bohrungdrilling
1919th
Schlitzslot
2020th
PrallkörperImpact body
2121st
VerengungNarrowing
2222nd
VerschlusselementClosure element
2323
VerschlusselementClosure element
2424
Schraubescrew
2525th
DruckmessmittelPressure measuring equipment
2626th
O-RingO-ring
2727
FedervorsprungSpring projection
2828
O-RingO-ring
2929
AbstandshalterSpacers
3030th
Vertiefungdeepening
AA.
Abstanddistance
MM.
MittelachseCentral axis
tt
Tiefedepth

Claims (9)

  1. A nozzle bar (1) for the treatment of fibres with water jets, including an elongately extending upper part (10), in which an elongately formed pressure chamber (11) is placed, wherein the pressure chamber (11) includes an end side with an opening (12) for supplying water and an opposite closed end side, and wherein a pressure distribution chamber (13), which extends parallel to the pressure chamber (11) along a central axis (M), is placed in the upper part (10), and wherein several throughflow bores (14) are placed distributed along the length of the upper part (10) in the intermediate walling (15) between the pressure chamber (11) and the pressure distribution chamber (13), through which bores water is guidable from the pressure chamber (11) into the pressure distribution chamber (13), and including an elongately extending lower part (16), which is disposed in a liquid-tight manner at the upper part (10), and wherein a nozzle strip (17) with bores (18) for the water discharge is accommodated in or at the lower part (16), and wherein a slot (19), which extends between the pressure distribution chamber (13) and the nozzle strip (17) for charging the nozzle strip (17) with water, is placed in the upper part, characterized in that the distance (A) of the nozzle strip (17) to the central axis (M) of the pressure distribution chamber (13) has a value of 40 mm to 50 mm.
  2. The nozzle bar (1) according to claim 1, characterized in that the distance (A) of the nozzle strip (17) to the central axis (M) of the pressure distribution chamber (13) has a value of 45 mm to 47 mm.
  3. The nozzle bar (1) according to claim 1 or 2, characterized in that the pressure chamber (11) has a diameter of 80 mm, and in that the pressure distribution chamber (13) has a diameter of 35 mm.
  4. The nozzle bar (1) according to any of the claims 1 to 3, characterized in that the depth (t) of the slot (19) projecting from the pressure distribution chamber (13) has a value of 27 mm to 30 mm.
  5. The nozzle bar (1) according to any of the aforementioned claims, characterized in that the slot (19) has a width of 8 mm to 12 mm and/or a width of 10 mm.
  6. The nozzle bar (1) according to any of the aforementioned claims, characterized in that the upper part (10) includes a tongue projection (27), which projects into a groove-like depression (30) in the lower part (16) and wherein the slot (19) extends into the tongue projection (27).
  7. The nozzle bar (1) according to any of the aforementioned claims, characterized in that a narrowing (21) adjoining the arrangement of the nozzle strip (17) is provided in the lower part (10) and/or in that a narrowing (21) adjoining the arrangement of the nozzle strip (17) has a clearance of 2 mm to 3 mm.
  8. The nozzle bar (1) according to any of the aforementioned claims, characterized in that the distance between the central axis of the pressure chamber (11) and the central axis (M) of the pressure distribution chamber (13) has a value of 85 mm to 95 mm and/or a value of 92 mm.
  9. The nozzle bar (1) according to any of the aforementioned claims, characterized in that an impact body (20) is provided, which is centrically disposed in the pressure distribution chamber (13), wherein the impact body (20) has an elongate cylinder shape and has a diameter of 20 mm to 25 mm and/or a diameter of 22.5 mm.
EP17764395.4A 2016-10-12 2017-09-08 Jet manifold for water jet processing fibers Active EP3526383B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016119482.4A DE102016119482A1 (en) 2016-10-12 2016-10-12 Nozzle bar for processing fibers with water jets
PCT/EP2017/072575 WO2018068961A1 (en) 2016-10-12 2017-09-08 Jet manifold for water jet processing fibers

Publications (2)

Publication Number Publication Date
EP3526383A1 EP3526383A1 (en) 2019-08-21
EP3526383B1 true EP3526383B1 (en) 2020-11-04

Family

ID=59811329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17764395.4A Active EP3526383B1 (en) 2016-10-12 2017-09-08 Jet manifold for water jet processing fibers

Country Status (5)

Country Link
EP (1) EP3526383B1 (en)
JP (1) JP2019531420A (en)
CN (1) CN109790664B (en)
DE (1) DE102016119482A1 (en)
WO (1) WO2018068961A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016119480A1 (en) * 2016-10-12 2018-04-12 TRüTZSCHLER GMBH & CO. KG Nozzle bar for processing fibers with water jets

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725175B1 (en) 1995-01-23 1999-03-24 FLEISSNER GmbH & Co. KG Maschinenfabrik Manifold in an apparatus for jetting high velocity liquid streams
DE19921694A1 (en) * 1999-05-12 2000-11-16 Fleissner Maschf Gmbh Co Jet beam for fluid jet creating device, with removable insert in pressure distribution chamber
DE19941729A1 (en) * 1999-09-01 2001-03-08 Fleissner Maschf Gmbh Co Nozzle body for generating the finest liquid jets z. B. on water needling devices
DE10205151A1 (en) * 2002-02-07 2003-08-21 Fleissner Maschf Gmbh Co Nozzle bar on a device for generating liquid jets
CN100500969C (en) * 2002-10-08 2009-06-17 三菱丽阳工程株式会社 Pressurized steam-jetting nozzle, and method and apparatus for producing nonwoven fabric using the nozzle
DE102005055939B3 (en) * 2005-11-24 2007-02-08 Fleissner Gmbh Nozzle crosspiece used in a device for producing a liquid jet comprises a pressure distribution chamber containing an impact body arranged over the length of a slot and not screwed to the crosspiece but inserted into it

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2018068961A1 (en) 2018-04-19
JP2019531420A (en) 2019-10-31
CN109790664B (en) 2022-02-01
EP3526383A1 (en) 2019-08-21
DE102016119482A1 (en) 2018-04-12
CN109790664A (en) 2019-05-21

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