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EP1319099A2 - Nozzle body for producing very fine liquid jet flows on water needling devices - Google Patents

Nozzle body for producing very fine liquid jet flows on water needling devices

Info

Publication number
EP1319099A2
EP1319099A2 EP01982307A EP01982307A EP1319099A2 EP 1319099 A2 EP1319099 A2 EP 1319099A2 EP 01982307 A EP01982307 A EP 01982307A EP 01982307 A EP01982307 A EP 01982307A EP 1319099 A2 EP1319099 A2 EP 1319099A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
nozzle body
strip
nozzle strip
strip according
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
EP01982307A
Other languages
German (de)
French (fr)
Other versions
EP1319099B1 (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
Application filed by Fleissner GmbH filed Critical Fleissner GmbH
Publication of EP1319099A2 publication Critical patent/EP1319099A2/en
Application granted granted Critical
Publication of EP1319099B1 publication Critical patent/EP1319099B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/19—Nozzle materials

Definitions

  • the invention relates to a nozzle strip for producing the finest liquid jets for the interlacing of endless or finite fibers in webs of chemical or natural fibers in nonwovens, tissues, fabrics or knitted fabrics, which preferably extend in a length that is transverse to the leading web Nozzle bar corresponding to the width of the material web is stored in a liquid-tight manner, a liquid pressure of up to 1000 bar being generated in the nozzle bar, which presses the nozzle strip against a wall of the nozzle bar provided with a flow slot, wherein a plurality of at a distance in the nozzle strip to generate the liquid jets of 20 - 128 hpi, i.e.
  • the material for the nozzle strip or the individual nozzle bodies in the nozzle strip is a hard metal or a ceramic material, as well Sat. phir, or a material is selected that has the same or similar physical properties, and the nozzle strip or the individual nozzle body is supported over its surface area by another material such as stainless steel.
  • a nozzle strip is e.g. B. is known from EP-A-0 725 175. It extends over a large working width and is generally made of a thin sheet of stainless steel with z. B. mechanically produced holes.
  • This nozzle strip or the holes made in it have a geometry which has been tried and tested in practice and which has always been improved, but which has only a short service life in practice.
  • the wall of the individual nozzle holes up to 0.1 mm in diameter must be extremely smooth, which is why the holes are drilled or punched.
  • the geometry of the holes is of particular importance for the formation of the water jet, which because a diffuse, conical part adjoins the height of the nozzle hole generally behind a nozzle cross-section determining the water jet, also in order not to tear the water jet formed on the way to the end of the hole by friction on the walls of the hole.
  • the holes quickly become unclean in the edge areas due to the water pressure that is increasingly desired in practice and also because of the constant abrasion. This creates blurred, out-of-round water jets, which only bring unsatisfactory energy into the dynamic treatment of the web.
  • nozzle strip is now described according to the genus, with which the aforementioned problems are avoided.
  • the water jets are now each generated by a single nozzle body, which is made of an extremely hard material and is only supported on the nozzle strip.
  • Such nozzle body can, for. B. be formed from a sapphire, on which the nozzle hole that can be produced with an extremely smooth wall shows no signs of wear even after prolonged use with high water pressure. Only the assembly of the individual nozzle bodies on such a nozzle strip is not easy. There is in particular the risk that the nozzle bodies are not aligned exactly perpendicular to the extension of the nozzle strip and that they may become deformed when the long nozzle strip is subjected to bending stress. B. solve this by stronger contact.
  • the object of the invention is to find a holder of the individual nozzle body, which ensures a secure alignment of the nozzle body in and on the nozzle strip and at the same time ensures that even if the nozzle strip is subjected to bending stress, it is impossible for individual nozzle bodies to jump off is.
  • z. B a cylindrical wall in which the nozzle body is held by on the radial inner wall and in the axial direction on a constriction of the inner wall.
  • the constriction can be a reduction in the diameter of a bore for receiving the nozzle body.
  • the nozzle body carrier can consequently consist of a cylindrical tube, the outer diameter of which is made wider in the region of the nozzle body, a tube with a reduced diameter connecting to the head-like carrier region of the nozzle body, which extends in the assembled state in the nozzle strips, similar to an Allen screw.
  • a nozzle strip with the carried nozzle bodies of the type according to the invention is shown as an example in the drawing. Show it:
  • FIG. 2 shows a section through a nozzle strip with individual nozzle bodies which are held in the nozzle strip in a separate nozzle body carrier made of a different material
  • FIG. 3 shows the top view of the nozzle strip according to FIG. 2
  • FIG. 4 shows a section across the strip according to FIG. 3,
  • FIG. 5 shows the top view of the nozzle strip according to FIG. 2, but with nozzle body supports and inserted on top of the nozzle strip without a depression
  • FIG. 6 shows a section across the strip according to FIG. 5.
  • 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, of which the upper is the pressure chamber 4 and the lower the pressure distribution chamber 5. Both chambers are open on one end and screwed tightly again through the cover.
  • the two chambers 4 and 5 are separated from one another by an intermediate wall.
  • a large number of flow bores 9 in the intermediate wall connect the two chambers along the length of the nozzle bar, so that the liquid flowing into the pressure chamber 4 flows evenly over the length into the pressure distribution chamber 5, in which an impact body 20 is additionally held on brackets 21 ,
  • the pressure distribution chamber is open at the bottom, namely through the slot 10 which is narrow in relation to the diameter of the bore of the pressure distribution chamber 5 and 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 in the upper part 1.
  • the slot 10 encloses a spring projection 23, which is fitted into a corresponding groove 24 in the lower part 2 and has a repair groove 26 for the O-ring 12, the outer edges 25 of which rest against the edge of the nozzle strip 14 are directed.
  • an annular groove is again introduced, in which the O-ring 12 lies for sealing the nozzle strip 14.
  • a slot 13 is also introduced in the lower part 2, which is only very narrow in its upper region and leaves only a little more than the width of the effective nozzle openings of the nozzle strip 14 open.
  • Fig. 1 is only relevant in connection with the storage of the nozzle strip.
  • the nozzle bar can also look very different, such as. B. according to DE-A-199 21 694.
  • the nozzle strip 14 has a certain width, which is necessary for receiving the nozzle holes 30 and for storage above the O-ring 12.
  • the individual nozzle bodies 31 are fastened on or better according to the invention in this nozzle strip 14. 2
  • the nozzle body consists of the sapphire 31 with the central bore or the nozzle hole 30, which widens after a short distance in depth to a cone that is very wide, possibly with an angle of 45 °.
  • the reason for this wide opening lies in the exact formation of the jet in the actual nozzle 30, which is very smooth in the walls and sharp-edged in the edge boundaries, and the subsequent non-contact extension of the jet until it strikes the one to be changed Textile goods, such as tissue or paper. This ensures a high-energy jet.
  • Such a sapphire 31 is held in a form-fitting manner in a nozzle body carrier 36.
  • the nozzle body carrier 31 is designed similarly to an Allen screw, that is to say with a head part 37, which receives the sapphire 31 centrally, and a foot part 38, through which a further central bore 39 extends.
  • the head part 37 is wider than the foot part 38 in diameter and is supported with its ring-shaped Contact surface 40 on the nozzle strip 14. Bores 41 are made in the nozzle strip 14 for the form-fitting reception of the nozzle body support 36 or for its foot part 38. With this construction, the sapphire 31 is precisely aligned and permanently held in the nozzle strip 14.
  • a groove 42 is milled into the nozzle strip 14, the dimensions of which are provided only for receiving the nozzle bodies 31, 36.
  • the depth of the groove 42 then corresponds to the height of the head part 37 of the nozzle body support 36, for which reference is made to FIG. 4.
  • the groove 42 can also be omitted, for which purpose reference is made to FIGS. 5 and 6.
  • the bores 41 in the nozzle strip 14 for the foot part 38 of the nozzle body carrier 36 are preferably in two rows and, as shown in FIG. 3, offset from one another and at a distance 43 which ensures that the head parts 37 of the nozzle body carrier 36 do not touch, and also not if the nozzle strip 14 should be bent in one direction or the other. This ensures an exact constant arrangement of the sapphires 31 in the nozzle strip 14 according to the assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Nozzles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The invention relates to jet flows on a nozzle beam for hydrodynamic water needling, formed inside a nozzle body which is supported as a component part on the nozzle strip. The aim of the invention is to ensure long-term secure positioning of the sapphire or similar material on the nozzle strip. According to the invention, the nozzle bodies are respectively held in place in a nozzle body support which is introduced via a foot part with a smaller diameter smaller into bores in the nozel strip.

Description

Dusenstreifen zur Erzeugung von feinsten Flüssigkeitsstrahlen an Wasservernadelungs- einrichtungenNozzle strips for generating the finest liquid jets on water needling devices

Die Erfindung bezieht sich auf einen Düsenstreifen zur Erzeugung von feinsten Flüssigkeitsstrahlen zur Strahlverflechtung von endlosen oder endlichen Fasern in Warenbahnen aus Chemie- oder Naturfasern in Nonwovens, Tissue, Geweben oder Gewirken, der vorzugsweise in einem quer zur vorlaufenden Warenbahn sich erstreckenden, in seiner Länge der Breite der Warenbahn entsprechenden Düsenbalken flüssigkeitsdicht gelagert ist, wobei in dem Düsenbalken ein Flüssigkeitsdruck bis zu 1000 bar erzeugt ist, der den Düsenstreifen gegen eine mit einem Durchflussschlitz versehene Wandung des Düsenbalkens presst, wobei in den Düsenstreifen zur Erzeugung der Flüssigkeitsstrahlen eine Vielzahl von in einem Abstand von 20 - 128 hpi, also sehr dicht nebeneinander angeordneten, im Durchmesser von 0,08 - 0,15 mm, also kleinste Löcher eingebracht sind, wobei als Material für den Düsenstreifen oder die einzelnen Düsenkörper im Düsenstreifen ein Hartmetall oder ein Keramikwerkstoff, wie auch Saphir, oder ein Werkstoff ausgewählt ist, der die gleichen oder ähnlichen physikalischen Eigenschaften hat, und der Düsenstreifen oder die einzelnen Düsenkörper über seine, ihre Flächenausdehnung von einem anderen Material wie Edelstahl gehalten, unterstützt ist.The invention relates to a nozzle strip for producing the finest liquid jets for the interlacing of endless or finite fibers in webs of chemical or natural fibers in nonwovens, tissues, fabrics or knitted fabrics, which preferably extend in a length that is transverse to the leading web Nozzle bar corresponding to the width of the material web is stored in a liquid-tight manner, a liquid pressure of up to 1000 bar being generated in the nozzle bar, which presses the nozzle strip against a wall of the nozzle bar provided with a flow slot, wherein a plurality of at a distance in the nozzle strip to generate the liquid jets of 20 - 128 hpi, i.e. very close to each other, with a diameter of 0.08 - 0.15 mm, i.e. the smallest holes are made, whereby the material for the nozzle strip or the individual nozzle bodies in the nozzle strip is a hard metal or a ceramic material, as well Sat. phir, or a material is selected that has the same or similar physical properties, and the nozzle strip or the individual nozzle body is supported over its surface area by another material such as stainless steel.

Ein Düsenstreifen ist z. B. aus der EP-A-0 725 175 bekannt. Er erstreckt sich über eine große Arbeitsbreite und ist im allgemeinen aus einem dünnen Blech aus Edelstahl mit z. B. mechanisch hergestellten Löchern gebildet. Dieser Düsenstreifen bzw. die in diesen eingebrachten Löcher haben eine in der Praxis ausprobierte und immer wieder verbesserte Geometrie, die in der Praxis aber nur eine geringe Standzeit hat. Die Wandung der einzelnen bis zu 0,1 mm im Durchmesser großen Düsenlöcher muss äußerst glatt sein, weswegen die Löcher gebohrt oder gestanzt werden. Die Geometrie der Löcher ist von besonderer Bedeutung für die Ausbildung des Wasserstrahls, wes- wegen im allgemeinen hinter einem den Wasserstrahl bestimmenden Düsenquerschnitt sich ein diffuser, konischer Teil über die Höhe des Düsenloches anschließt, auch um den gebildeten Wasserstrahl auf dem Wege zum Ende des Loches nicht durch Reibung an den Wandungen des Loches aufzureißen. Die Löcher werden aufgrund des von der Praxis immer höher gewünschten Wasserdruckes und auch wegen der ständigen Abrasion schnell in den Randbereichen unsauber. Dies erzeugt unscharfe, unrunde Wasserstrahlen, die nur eine unbefriedigende Energie in die dynamische Behandlung der Warenbahn bringen.A nozzle strip is e.g. B. is known from EP-A-0 725 175. It extends over a large working width and is generally made of a thin sheet of stainless steel with z. B. mechanically produced holes. This nozzle strip or the holes made in it have a geometry which has been tried and tested in practice and which has always been improved, but which has only a short service life in practice. The wall of the individual nozzle holes up to 0.1 mm in diameter must be extremely smooth, which is why the holes are drilled or punched. The geometry of the holes is of particular importance for the formation of the water jet, which because a diffuse, conical part adjoins the height of the nozzle hole generally behind a nozzle cross-section determining the water jet, also in order not to tear the water jet formed on the way to the end of the hole by friction on the walls of the hole. The holes quickly become unclean in the edge areas due to the water pressure that is increasingly desired in practice and also because of the constant abrasion. This creates blurred, out-of-round water jets, which only bring unsatisfactory energy into the dynamic treatment of the web.

In der DE-A-199 41 729 ist gemäß der Gattung nun eine andere Art von Düsenstreifen beschrieben, mit dem die vorgenannten Probleme vermieden sind. Die Wasserstrahlen werden jetzt jeweils von einem einzelnen Düsenkörper erzeugt, der aus einem äußerst harten Material hergestellt und auf dem Düsenstreifen lediglich abgestützt ist. Derartige Düsenkörper können z. B. aus einem Saphir gebildet sein, an dem sich das mit einer äußerst glatten Wandung herstellbare Düsenloch auch nach längerer Benutzung mit auch hohem Wasserdruck keine Verschleißerscheinungen zeigt. Nur die Montage der einzelnen Düsenkörper auf einem solchen Düsenstreifen ist nicht einfach. Es besteht insbesondere die Gefahr, dass die Düsenkörper nicht exakt senkrecht zur Erstreckung des Düsenstreifens ausgerichtet sind und dass sie sich bei einer Biegebeanspruchung des langen Düsenstreifens z. B. durch stärkeren Kontakt von diesem lösen.In DE-A-199 41 729 another type of nozzle strip is now described according to the genus, with which the aforementioned problems are avoided. The water jets are now each generated by a single nozzle body, which is made of an extremely hard material and is only supported on the nozzle strip. Such nozzle body can, for. B. be formed from a sapphire, on which the nozzle hole that can be produced with an extremely smooth wall shows no signs of wear even after prolonged use with high water pressure. Only the assembly of the individual nozzle bodies on such a nozzle strip is not easy. There is in particular the risk that the nozzle bodies are not aligned exactly perpendicular to the extension of the nozzle strip and that they may become deformed when the long nozzle strip is subjected to bending stress. B. solve this by stronger contact.

Ausgehend von der oben genannten Anordnung besteht die Aufgabe der Erfindung darin, eine Halterung des einzelnen Düsenkörpers zu finden, die eine sichere Ausrichtung des Düsenkörpers im und an dem Düsenstreifen gewährleistet und gleichzeitig sicherstellt, dass auch bei einer Biegebeanspruchung des Düsenstreifens ein Abspringen von einzelnen Düsenkörpern unmöglich ist.Based on the above arrangement, the object of the invention is to find a holder of the individual nozzle body, which ensures a secure alignment of the nozzle body in and on the nozzle strip and at the same time ensures that even if the nozzle strip is subjected to bending stress, it is impossible for individual nozzle bodies to jump off is.

Die Lösung der gestellten Aufgabe besteht darin, dass nunmehr nur eine Gruppe dieser Düsenkörper oder besser jeder einzelne von einem eigenen Düsenkörperträger gehalten und dieser erst auf dem Düsenstreifen abgestützt ist. Der Saphir soll also nach Herstellung des glattwandigen Düsenloches ggf. mit sich anschließendem stark abgeschrägten Konus in einen Düsenkörperträger exakt eingefahren und dort fest gehalten werden. Dazu dient z. B eine zylinderförmige Wandung, in der der Düsenkör- per an der radialen Innenwandung und in axialer Richtung an einer Verengung der Innenwandung gehalten ist. Die Verengung kann eine Durchmesserverkleinerung einer Bohrung für die Aufnahme des Düsenkörpers sein. Der Düsenkörperträger kann folglich aus einem zylindrischen Rohr bestehen, dessen Außendurchmesser im Bereich des Düsenkörpers breiter ausgebildet ist, wobei sich an den kopfähnlichen Trägerbereich des Düsenkörpers ähnlich einer Imbusschraube ein im Durchmesser verkleinertes Röhrchen anschließt, das sich im montierten Zustand in den Düsenstreifen erstreckt.The solution to the problem is that now only one group of these nozzle bodies or better each individual is held by its own nozzle body carrier and this is only supported on the nozzle strip. After the smooth-walled nozzle hole has been made, the sapphire should, if necessary with a subsequent strongly tapered cone, be precisely inserted into a nozzle body carrier and held there firmly. For this purpose, z. B a cylindrical wall in which the nozzle body is held by on the radial inner wall and in the axial direction on a constriction of the inner wall. The constriction can be a reduction in the diameter of a bore for receiving the nozzle body. The nozzle body carrier can consequently consist of a cylindrical tube, the outer diameter of which is made wider in the region of the nozzle body, a tube with a reduced diameter connecting to the head-like carrier region of the nozzle body, which extends in the assembled state in the nozzle strips, similar to an Allen screw.

Ein Düsenstreifen mit den getragenen Düsenkörpern der erfindungsgemäßen Art ist in der Zeichnung beispielhaft dargestellt. Es zeigen:A nozzle strip with the carried nozzle bodies of the type according to the invention is shown as an example in the drawing. Show it:

Fig.: 1 Einen Schnitt quer durch einen Düsenbalken, wie er in der EP 0 725 175 offenbart ist,1 shows a section across a nozzle bar, as disclosed in EP 0 725 175,

Fig.: 2 einen Schnitt durch einen Düsenstreifen mit einzelnen Düsenkörpern, die in einem eigenen Düsenkörperträger aus einem anderem Material in dem Düsenstreifen gehalten sind,2 shows a section through a nozzle strip with individual nozzle bodies which are held in the nozzle strip in a separate nozzle body carrier made of a different material,

Fig.: 3 die Draufsicht auf den Düsenstreifen nach Fig. 23 shows the top view of the nozzle strip according to FIG. 2

Fig.: 4 einen Schnitt quer durch den Streifen nach Fig. 3,4 shows a section across the strip according to FIG. 3,

Fig.: 5 die Draufsicht auf den Düsenstreifen nach Fig. 2, jedoch mit oben auf den Düsenstreifen ohne Vertiefung eingesetzte Düsenkörperträger und5 shows the top view of the nozzle strip according to FIG. 2, but with nozzle body supports and inserted on top of the nozzle strip without a depression

Fig.: 6 einen Schnitt quer durch den Streifen nach Fig. 5.6 shows a section across the strip according to FIG. 5.

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 Deckel flüssigkeitsdicht verschraubt. Die beiden Kammern 4 und 5 sind durch eine Zwischenwandung voneinander getrennt. Über die Länge des Düsenbalkens verbinden eine große Anzahl von Durchflussbohrungen 9 in der Zwischenwandung die beiden Kammern, so dass die in die Druckkammer 4 einströmende Flüssigkeit gleichmäßig verteilt über die Länge in die Druckverteilkammer 5 ausströmt, in der zusätzlich an Halterungen 21 ein Prallkörper 20 gehalten ist. 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. Gemäß der Fig. 1 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 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 einge- passt ist und für den O-Ring 12 eine Reparaturnut 26 aufweist, dessen Außenränder 25 gegen den Rand des Düsenstreifens 14 gerichtet sind. In dem Boden der Nut 24 des Unterteils 2 ist wiederum eine Ringnut eingebracht, in der der O-Ring 12 zur Abdichtung des Düsenstreifens 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 Düsenstreifens 14 offen lässt.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, of which the upper is the pressure chamber 4 and the lower the pressure distribution chamber 5. Both chambers are open on one end and screwed tightly again through the cover. The two chambers 4 and 5 are separated from one another by an intermediate wall. A large number of flow bores 9 in the intermediate wall connect the two chambers along the length of the nozzle bar, so that the liquid flowing into the pressure chamber 4 flows evenly over the length into the pressure distribution chamber 5, in which an impact body 20 is additionally held on brackets 21 , The pressure distribution chamber is open at the bottom, namely through the slot 10 which is narrow in relation to the diameter of the bore of the pressure distribution chamber 5 and which also extends over the length of the beam. 1, 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 in the upper part 1. In the middle between the O-ring 11, the slot 10 encloses a spring projection 23, which is fitted into a corresponding groove 24 in the lower part 2 and has a repair groove 26 for the O-ring 12, the outer edges 25 of which rest against the edge of the nozzle strip 14 are directed. In the bottom of the groove 24 of the lower part 2, an annular groove is again introduced, in which the O-ring 12 lies for sealing the nozzle strip 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 only a little more than the width of the effective nozzle openings of the nozzle strip 14 open.

Die Fig. 1 ist hier nur im Zusammenhang mit der Lagerung des Düsenstreifens von Bedeutung. Der Düsenbalken kann auch ganz anders aussehen, wie z. B. gemäß der DE-A-199 21 694.Fig. 1 is only relevant in connection with the storage of the nozzle strip. The nozzle bar can also look very different, such as. B. according to DE-A-199 21 694.

Der Düsenstreifen 14 hat eine gewisse Breite, die für die Aufnahme der Düsenlöcher 30 und für die Lagerung oberhalb des O-Rings 12 notwendig ist. Auf oder besser gemäß der Erfindung in diesem Düsenstreifen 14 sind die einzelnen Düsenkörper 31 befestigt. Gemäß Fig. 2 besteht der Düsenkörper aus dem Saphir 31 mit der zentrischen Bohrung oder dem Düsenloch 30, das sich nach einer in der Tiefe geringen Strecke zu einem Konus erweitert, der sehr breit gestaltet ist, ggf. mit einem Winkel von 45°. Der Grund für diese weite Öffnung liegt in der exakten Ausbildung des Düsenstrahls in der eigentlichen Düse 30, die ja sehr glatt in den Wänden und scharfkantig in den Randbegrenzungen ausgebildet ist, und der sich dann anschließenden berührungsfreien Erstreckung des Düsenstrahls bis zum Auftreffen auf das zu verändernde Textilgut, wie Tissue oder Papier. Dies gewährleistet einen energiereichen Düsenstrahl.The nozzle strip 14 has a certain width, which is necessary for receiving the nozzle holes 30 and for storage above the O-ring 12. The individual nozzle bodies 31 are fastened on or better according to the invention in this nozzle strip 14. 2, the nozzle body consists of the sapphire 31 with the central bore or the nozzle hole 30, which widens after a short distance in depth to a cone that is very wide, possibly with an angle of 45 °. The reason for this wide opening lies in the exact formation of the jet in the actual nozzle 30, which is very smooth in the walls and sharp-edged in the edge boundaries, and the subsequent non-contact extension of the jet until it strikes the one to be changed Textile goods, such as tissue or paper. This ensures a high-energy jet.

Ein solcher Saphir 31 ist in einem Düsenkörperträger 36 formschlüssig gehalten. Der Düsenkörperträger 31 ist ähnlich einer Imbusschraube ausgebildet, also mit einem Kopfteil 37, der den Saphir 31 zentrisch aufnimmt, und einem Fußteil 38, durch den sich eine weitere zentrische Bohrung 39 erstreckt. Der Kopfteil 37 ist gegenüber dem Fußteil 38 im Durchmesser breiter ausgebildet und stützt sich mit seiner ringförmigen Anlagefläche 40 auf dem Düsenstreifen 14 ab. In den Düsenstreifen 14 sind zur formschlüssigen Aufnahme der Düsenkörperträger 36 bzw. für dessen Fußteil 38 Bohrungen 41 eingebracht. Durch diese Konstruktion ist der Saphir 31 exakt ausgerichtet und auf Dauer fest im Düsenstreifen 14 gehalten.Such a sapphire 31 is held in a form-fitting manner in a nozzle body carrier 36. The nozzle body carrier 31 is designed similarly to an Allen screw, that is to say with a head part 37, which receives the sapphire 31 centrally, and a foot part 38, through which a further central bore 39 extends. The head part 37 is wider than the foot part 38 in diameter and is supported with its ring-shaped Contact surface 40 on the nozzle strip 14. Bores 41 are made in the nozzle strip 14 for the form-fitting reception of the nozzle body support 36 or for its foot part 38. With this construction, the sapphire 31 is precisely aligned and permanently held in the nozzle strip 14.

Es ist zweckmäßig, wenn gemäß Fig. 3 und 4 in den Düsenstreifen 14 eine Nut 42 eingefräst ist, die in den Abmaßen nur für die Aufnahme der Düsenkörper 31, 36 vorgesehen ist. Die Tiefe der Nut 42 entspricht dann der Höhe des Kopfteils 37 des Düsenkörperträgers 36, wozu auf die Fig. 4 verwiesen wird. Selbstverständlich kann die Nut 42 auch entfallen, wozu auf die Fig. 5 und 6 verwiesen wird. Die Bohrungen 41 in dem Düsenstreifen 14 für den Fußteil 38 der Düsenkörperträger 36 sind vorzugsweise zweireihig und gemäß Fig. 3 versetzt zueinander und in einem Abstand 43 eingebracht, der gewährleistet, dass sich die Kopfteile 37 der Düsenkörperträger 36 nicht berühren, und zwar auch nicht, wenn der Düsenstreifen 14 in die eine oder andere Richtung gebogen werden sollte. Dies gewährleistet eine gemäß der Montage exakte gleichbleibende Anordnung der Saphire 31 im Düsenstreifen 14. It is expedient if, according to FIGS. 3 and 4, a groove 42 is milled into the nozzle strip 14, the dimensions of which are provided only for receiving the nozzle bodies 31, 36. The depth of the groove 42 then corresponds to the height of the head part 37 of the nozzle body support 36, for which reference is made to FIG. 4. Of course, the groove 42 can also be omitted, for which purpose reference is made to FIGS. 5 and 6. The bores 41 in the nozzle strip 14 for the foot part 38 of the nozzle body carrier 36 are preferably in two rows and, as shown in FIG. 3, offset from one another and at a distance 43 which ensures that the head parts 37 of the nozzle body carrier 36 do not touch, and also not if the nozzle strip 14 should be bent in one direction or the other. This ensures an exact constant arrangement of the sapphires 31 in the nozzle strip 14 according to the assembly.

Claims

P a t e n t a n s p r ü c h e : Patent claims: 1. Düsenstreifen (14) zur Erzeugung von feinsten Flüssigkeitsstrahlen zur Strahlverflechtung von endlosen oder endlichen Fasern in Warenbahnen aus Chemie- oder Naturfasern in Nonwovens, Tissue, Geweben oder Gewirken, der vorzugsweise in einem quer zur vorlaufenden Warenbahn sich erstreckenden, in seiner Länge der Breite der Warenbahn entsprechenden Düsenbalken (1) flüssigkeitsdicht gelagert ist, wobei in dem Düsenbalken (1) ein Flüssigkeitsdruck bis zu 1000 bar erzeugt ist, der den Düsenstreifen (14) gegen eine mit einem Durchflussschlitz (13) versehene Wandung (2) des Düsenbalkens (1) presst, wobei in den Düsenstreifen (14) zur Erzeugung der Flüssigkeitsstrahlen eine Vielzahl von in einem Abstand von 20 - 128 hpi, also sehr dicht nebeneinander angeordneten, im Durchmesser von 0,08 - 0,15 mm, also kleinste Löcher (30) eingebracht sind, wobei als Material für den Düsenstreifen (14) oder die einzelnen Düsenkörper (31) im Düsenstreifen (14) ein Hartmetall oder ein Keramikwerkstoff, wie auch Saphir, oder ein Werkstoff ausgewählt ist, der die gleichen oder ähnlichen physikalischen Eigenschaften hat, und der Düsenstreifen (14) oder die einzelnen Düsenkörper (31) über seine, ihre Flächenausdehnung von einem anderen Material (31, 31') wie Edelstahl gehalten, unterstützt ist, dadurch gekennzeichnet, dass eine Gruppe dieser Düsenkörper (31) oder besser jeder einzelne von einem eigenen Düsenkörperträger (36) gehalten und dieser erst auf dem Düsenstreifen (14) abgestützt ist.1. Nozzle strips (14) for producing the finest liquid jets for the interlacing of endless or finite fibers in webs of chemical or natural fibers in nonwovens, tissues, fabrics or knitted fabrics, which preferably extend in a lengthwise width across a leading web the nozzle bar (1) corresponding to the material web is stored in a liquid-tight manner, a liquid pressure of up to 1000 bar being generated in the nozzle bar (1) which presses the nozzle strip (14) against a wall (2) of the nozzle bar (1) provided with a flow slot (13) ), whereby in the nozzle strips (14) for generating the liquid jets a large number of holes (30) with a diameter of 0.08 - 0.15 mm, which are arranged at a distance of 20 - 128 hpi, i.e. very closely next to each other, in diameter are introduced, the material for the nozzle strip (14) or the individual nozzle bodies (31) in the nozzle strip (14) being a hard metal or a ceramic material, such as sapphire, or a material is selected that has the same or similar physical properties, and the nozzle strip (14) or the individual nozzle body (31) over its, its surface area of another material (31, 31 ') such Stainless steel is supported, characterized in that a group of these nozzle bodies (31) or better each individual is held by its own nozzle body carrier (36) and this is only supported on the nozzle strip (14). 2. Düsenstreifen nach Anspruch 1 , dadurch gekennzeichnet, dass äer Düsenkörper von einer mit einer Innenwandung versehenen zylinderförmigen Wandung und in axialer Richtung an einer Verengung der Innenwandung gehalten ist. 2. Nozzle strip according to claim 1, characterized in that the nozzle body is held by a cylindrical wall provided with an inner wall and in the axial direction on a narrowing of the inner wall. 3. Düsenstreifen nach Anspruch 2, dadurch gekennzeichnet, dass die Verengung eine Durchmesserverkleinerung einer Bohrung für die Aufnahme des Düsenkörpers ist.3. Nozzle strip according to claim 2, characterized in that the constriction is a reduction in diameter of a bore for receiving the nozzle body. 4. Düsenstreifen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Düsenkörperträger (36) aus einem zylindrischen Rohr (37, 38) besteht, dessen Außendurchmesser im Bereich des Düsenkörpers (31) breiter ausgebildet ist.4. Nozzle strip according to one of the preceding claims, characterized in that the nozzle body carrier (36) consists of a cylindrical tube (37, 38), the outer diameter of which is wider in the region of the nozzle body (31). 5. Düsenstreifen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich an den kopfähnlichen Trägerbereich (37) des Düsenkörpers (31) ähnlich einer Imbusschraube ein im Durchmesser verkleinertes Röhrchen (38) anschließt, das sich im montierten Zustand in den Düsenstreifen (14) erstreckt.5. Nozzle strip according to one of the preceding claims, characterized in that a tube (38) of reduced diameter connects to the head-like support region (37) of the nozzle body (31) similar to an Allen screw, which tube (38) is mounted in the nozzle strip (14). extends. 6. Düsenstreifen nach Anspruch 5, dadurch gekennzeichnet, dass der Fußteil, das Röhrchen (38) des Düsenkörperträgers (38) in einer Bohrung (41) im Düsenstreifen (14) gehalten ist.6. Nozzle strip according to claim 5, characterized in that the foot part, the tube (38) of the nozzle body carrier (38) is held in a bore (41) in the nozzle strip (14). 7. Düsenstreifen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Fußteil des Düsenkörperträgers (36) aus einem dünnwandigen Röhrchen (38) besteht, dessen Innendurchmesser den freien Durchtritt des Wasserstrahls also ohne Kontakt zur Innenwandung gewährleistet.7. Nozzle strip according to one of the preceding claims, characterized in that the foot part of the nozzle body carrier (36) consists of a thin-walled tube (38), the inner diameter of which ensures the free passage of the water jet without contact with the inner wall. 8. Düsenstreifen nach Anspruch 7 oder 4, dadurch gekennzeichnet, dass der Innendurchmesser des Düsenkörperträgers (36) am Kopfende (37) zur formschlüssigen Aufnahme und Abstützung des Düsenkörpers (31) rundum erweitert ist.8. Nozzle strip according to claim 7 or 4, characterized in that the inner diameter of the nozzle body carrier (36) at the head end (37) for the positive reception and support of the nozzle body (31) is expanded all around. 9. Düsenstreifen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Kopfende (37) des Düsenkörperträgers (36) in einer Vertiefung (42) des Düsenstreifens (14) angeordnet ist.9. Nozzle strip according to one of the preceding claims, characterized in that the head end (37) of the nozzle body carrier (36) is arranged in a recess (42) of the nozzle strip (14). 10. Düsenstreifen nach Anspruch 9, dadurch gekennzeichnet, dass in die Oberfläche des Düsenstreifens (14) eine Nut (42) eingefräst ist, die in der Höhe der Höhe des Kopfendes (37) des Düsenkörperträgers (36) entspricht. 10. Nozzle strip according to claim 9, characterized in that a groove (42) is milled into the surface of the nozzle strip (14), which corresponds to the height of the head end (37) of the nozzle body carrier (36). 11. Düsenstreifen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Düsenkörperträger (36) dicht beieinander, aber mit Abstand (43) voneinander in dem Düsenstreifen (14) gehalten sind.11. Nozzle strip according to one of the preceding claims, characterized in that the nozzle body supports (36) are held close together but at a distance (43) from one another in the nozzle strip (14). 12. Dösenstreifen nach Anspruch 11, dadurch gekennzeichnet, dass die Düsenkörperträger (36) zumindest in zwei Reihen versetzt zueinander (Fig. 3) in d&r Nut (42) gehalten sind. 12. The strip according to claim 11, characterized in that the nozzle body supports (36) are held in at least two rows offset from one another (FIG. 3) in the d & r groove (42).
EP01982307A 2000-09-21 2001-09-18 Nozzle body for producing very fine liquid jet flows on water needling devices Expired - Lifetime EP1319099B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10047106A DE10047106A1 (en) 2000-09-21 2000-09-21 Nozzle body for generating the finest liquid jets on water needling devices
DE10047106 2000-09-21
PCT/EP2001/010753 WO2002024998A2 (en) 2000-09-21 2001-09-18 Nozzle body for producing very fine liquid jet flows on water needling devices

Publications (2)

Publication Number Publication Date
EP1319099A2 true EP1319099A2 (en) 2003-06-18
EP1319099B1 EP1319099B1 (en) 2005-07-20

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Family Applications (1)

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EP01982307A Expired - Lifetime EP1319099B1 (en) 2000-09-21 2001-09-18 Nozzle body for producing very fine liquid jet flows on water needling devices

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US (1) US6942167B2 (en)
EP (1) EP1319099B1 (en)
JP (1) JP2004510070A (en)
AT (1) ATE299960T1 (en)
AU (1) AU2002213930A1 (en)
DE (2) DE10047106A1 (en)
DK (1) DK1319099T3 (en)
WO (1) WO2002024998A2 (en)

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EP2301671B1 (en) 2009-09-18 2012-06-06 Groz-Beckert KG Nozzle strip for a textile processing machine
DE202014101647U1 (en) * 2014-04-08 2015-07-09 Autefa Solutions Germany Gmbh nozzle beam

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Publication number Publication date
DE50106809D1 (en) 2005-08-25
ATE299960T1 (en) 2005-08-15
AU2002213930A1 (en) 2002-04-02
WO2002024998A3 (en) 2002-08-15
US6942167B2 (en) 2005-09-13
WO2002024998A2 (en) 2002-03-28
DK1319099T3 (en) 2005-11-14
US20040026543A1 (en) 2004-02-12
DE10047106A1 (en) 2002-04-11
EP1319099B1 (en) 2005-07-20
WO2002024998B1 (en) 2002-11-28
JP2004510070A (en) 2004-04-02

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