EP3526383A1 - Rampe de jets d'eau pour le traitement de fibres par jets d'eau - Google Patents

Rampe de jets d'eau pour le traitement de fibres par jets d'eau

Info

Publication number
EP3526383A1
EP3526383A1 EP17764395.4A EP17764395A EP3526383A1 EP 3526383 A1 EP3526383 A1 EP 3526383A1 EP 17764395 A EP17764395 A EP 17764395A EP 3526383 A1 EP3526383 A1 EP 3526383A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
pressure
pressure distribution
chamber
distribution chamber
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
EP17764395.4A
Other languages
German (de)
English (en)
Other versions
EP3526383B1 (fr
Inventor
Bernd Stork
Antonio GUZMAN NAVARRO
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 GmbH and Co KG
Original Assignee
Truetzschler GmbH and Co KG
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 Truetzschler GmbH and Co KG filed Critical Truetzschler GmbH and Co KG
Publication of EP3526383A1 publication Critical patent/EP3526383A1/fr
Application granted granted Critical
Publication of EP3526383B1 publication Critical patent/EP3526383B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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 beam for the treatment of fibers with water jets, comprising a longitudinally extending upper part, in which an elongate pressure chamber is introduced, wherein the pressure chamber has an end side with an opening for supplying water and an opposite closed end side, and wherein in the upper part of a pressure distribution chamber is introduced, which extends parallel to the pressure chamber and distributed over the length of the upper part a plurality of flow holes in the intermediate wall between the pressure chamber and the pressure distribution chamber are introduced, through which the water from the pressure chamber in the pressure distribution chamber is feasible, and comprising a longitudinally extending lower part, which is arranged liquid-tight on the upper part, and wherein a nozzle strip is received with holes for the water outlet in or on the lower part, and wherein in the upper part of a slot is introduced, the extends between the pressure distribution chamber and the nozzle strip for watering the nozzle strip.
  • a nozzle bar for the processing of a textile product with water jets is known.
  • the processing of the textile goods takes place with a plurality of water jets generated in a row, which extend for example over the entire width of a moving under the water jets textile web and act on these.
  • the nozzle bar on a water connection, with the opening through the water in the Pressure chamber is fed.
  • the water for example, passes through the opening into the pressure chamber with a generated pressure of 250 bar, whereby the inflow velocity of the water through the opening is for example up to 8 m / s, and approximately in the middle of the pressure chamber the flow velocity still has a value of 2.5 m / s up.
  • the nozzle beam is elongate and thus slender, wherein the nozzle beam is formed substantially by the elongated upper part and the elongated lower part.
  • the lower part is arranged liquid-tight on the side of the upper part, which faces the textile product, and on the lower part and arranged in the lower part or on the lower part nozzle strips the water jets are generated by the plurality of holes which are introduced into the nozzle strip.
  • the underside of the pressure distribution chamber is adjoined by a slot which has a constant width and closes off on the bottom side with the nozzle strip.
  • the primary objective in the further development of jet bars for the processing of textile goods is to produce a uniform as possible formation of water jets through the holes over the entire length of the nozzle strip, for which the pressure over the long length of the nozzle bar on the inside of the nozzle strip in Should be substantially the same.
  • the pressure chamber is formed separately from the pressure distribution chamber, and between the pressure chamber and the pressure distribution chamber, a plurality of flow openings extend in the intermediate wall between the pressure chamber and the pressure distribution chamber.
  • the equalization of the water pressure inside the holes in the nozzle strip should, however, be designed with the lowest possible total pressure loss.
  • the nozzle bars are permanently under water, so that any pressure loss in the nozzle bar at the same time brings a loss of energy during operation of the system. Consequently, the goal in the construction of nozzle beam in addition to a uniform formation of all water jets as low a pressure loss, starting from the opening for feeding water into the pressure chamber to the outflow of water from the holes in the nozzle strip.
  • EP 0 725 175 B1 discloses a nozzle bar for processing a textile product with water jets, and to equalize the water pressure, the slot is made in front of the outlet holes in the nozzle strip so that an increased turbulence of the water for a uniform application of the nozzle strip is generated from the inside , which, however, accompanied by an increased pressure loss.
  • nozzle bars must be cleaned at regular intervals, in particular, the nozzle strip must be removed in a simple manner.
  • geometric adjustments can allow a further reduction of the pressure loss, so that for example the narrow slot for the mouth of the pressure distribution chamber can be optimized at the nozzle strip, as described in EP 0 725 175 B1.
  • the object of the invention is the further improvement of a nozzle beam for the treatment of fibers with water jets, wherein the nozzle beam should have a low total pressure loss, and wherein the nozzle beam to be developed so that the generated over the holes in the nozzle strip water jets over the entire width of the nozzle bar as possible to be formed equal to each other. Furthermore, the nozzle bar should experience as minimal as possible space configuration, without leaving the upstream tasks of the invention unsolved.
  • the invention includes the technical teaching that the distance of the nozzle strip to the central axis of the pressure distribution chamber has a value of 40mm to 50mm.
  • the design of the nozzle bar with a distance of the nozzle strip to 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, in which shortly before the impact of the water on the nozzle strip a calming and equalization of the flow Water is achieved without this is associated with a significant pressure loss.
  • the result is with an increasing depth of the slot, a further improved equalization of the flow and the pressure of the water inside the holes in the nozzle strip, so that a deepest possible slot is desirable.
  • the depth of the slot should not be too large, as would thus increase the height of the nozzle beam undesirable and the flow resistance of the water in the flow through the slot would continue to grow undesirable.
  • there is an ideal distance of the nozzle strip to the central axis of the pressure distribution chamber with a value of 40mm to 50mm.
  • the best value of the distance of the nozzle strip to the center axis of the pressure distribution chamber is 46 mm. Also, and in particular, it is advantageous if the projecting from the pressure distribution chamber depth of the slot has a value of 27mm to 30mm.
  • the pressure chamber has a diameter of 80 mm and if the pressure distribution chamber has a diameter of 35 mm.
  • the geometric configuration of the nozzle beam with the pressure chamber and the pressure distribution chamber with corresponding diameters of a circular cross-section results in a surprisingly positive effect on the equalization of the outlet pressure via the slot in the direction of the nozzle strip at a simultaneously low total pressure drop in the nozzle bar, in particular in connection with the slot formed according to the invention ,
  • the nozzle bar is in particular designed for the feeding of water at a speed of up to about 8 m / s at a pre-pressure of 250 bar. Due to the size ratios of the pressure chamber and the pressure distribution chamber results in an advantageous overflow of water through the flow holes in the intermediate wall, for example, up to 1 1 m / s.
  • a further improvement of 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 projects into a groove-like depression in the lower part and wherein the slot extends into the spring projection.
  • a constriction adjoining the arrangement of the nozzle strip is introduced in the lower part and / or that a constriction adjoining the arrangement of the nozzle strip has a gap of 2 mm to 3 mm. Due to the narrow gap, the water jets are directed even more directed towards the textile goods.
  • the distance between the center axis of the pressure chamber and the central axis of the pressure distribution chamber has a value of 85 mm to 95 mm and / or a value of 92 mm.
  • an impact body which is arranged cylindrical in the pressure distribution chamber, wherein the impact body has an elongated cylindrical shape and has a diameter of 20mm to 25mm and / or a diameter of 22.5mm.
  • the impact body is received at its ends of its elongated cylindrical shape and / or the impact body has distributed over its length Spacer, by means of which the baffle body is held centrally arranged in the pressure distribution chamber.
  • particularly advantageous flow conditions in the pressure distribution chamber result when the impact body is arranged centrally in the pressure distribution chamber.
  • the baffle body completely equidistant from the wall of the pressure distribution chamber, so that the flow cross section of the water from the flow holes into the slot around the baffle body is formed substantially constant. It has been found that with such a design of the impact body and its arrangement in the pressure distribution chamber, only minimal or no vortex formation occurs. Consequently, the pressure loss is minimized with the best possible pressure distribution over the length of the nozzle beam.
  • a further 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 wherein 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 opposite side of the closure element with the opening by the material of the upper part. For manufacturing reasons, however, it is advantageous if the upper part over its entire length has a substantially same cross-section material.
  • the pressure distribution chamber is closed in the upper part at its opposite end sides of the upper part with closure elements.
  • the impact body can be received with its ends between the closure elements. If the baffle body has to be removed from it, for example, for cleaning purposes of the pressure distribution chamber, then it is already sufficient to release one of the two closure elements from the end sides of the upper part.
  • Figure 1 is a cross-sectional view through a nozzle bar for the
  • Figure 2 is a cross-sectional view through the nozzle bar according to
  • Figure 1 shows a cross-sectional view through a nozzle bar 1 for the processing of fibers, such as a textile web, with water jets
  • Figure 2 shows along the section AA a cross-sectional view through the nozzle bar 1, wherein the sectional plane A-A transverse to the sectional plane through the nozzle bar 1 according to FIG. 1.
  • the nozzle bar 1 is described in more detail in conjunction with FIGS. 1 and 2.
  • the housing of the nozzle beam 1 has an upper part 10, which is screwed to the lower part 16 over the length of many times by screws 24.
  • the upper part 10 has two holes 1 1 and 13 extending in the longitudinal direction, of which the upper bore forms a pressure chamber 1 1 and the lower bore forms a pressure distribution chamber 13. Both chambers 1 1 and 13 are made open at the end sides of the upper part 10 and liquid-tightly closed by closure elements 22 for the pressure chamber 1 1 and by closing elements 23 for the pressure distribution chamber 13.
  • the closure element 22 for closing the pressure chamber 1 1 has a pressure measuring means 25, and the Closure element 22 for closing the pressure chamber 1 1 on the right side has an opening 12, via which water can be fed into the pressure chamber 1 1 with a water connection, not shown.
  • the two chambers 1 1 and 13 are separated by an intermediate wall 15, wherein the intermediate wall 15 is formed by a cross-sectional area of the upper part 10.
  • Over the length of the nozzle bar 1 connects a large number of flow holes 14 in the intermediate wall 15, the two chambers 1 1 and 13, so that in the pressure chamber 1 1 inflowing water flows evenly distributed over the length of the nozzle beam 1 in the pressure distribution chamber 13.
  • the pressure distribution chamber 13 is open at the bottom, through the narrow compared to the diameter of the bore of the pressure distribution chamber 13 slot 19, which also extends over the length of the nozzle beam 1.
  • the upper part 10 with the lower part 16 is firmly and fluid-tight screwed to the screws 24.
  • the tightness is effected by the O-ring 26 which is seated in a groove 19 extending around the slot.
  • a spring projection 27 is seated in a corresponding groove in the lower part 16, and in the groove is another O-ring 28, which serves to seal the nozzle strip 17.
  • FIG. 1 shows the nozzle strip 17, which has a plurality of bores 18, wherein the bores 18 in the longitudinal direction to each other equally spaced pass through the nozzle strip 17.
  • 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. Due to the described embodiment of the nozzle bar 1, the water, which flows under pressure through the opening 12 in the closure element 22 into the pressure chamber 1 1, uniformly pass through the plurality of flow holes 14 in the intermediate wall 15 and enter the pressure distribution chamber 13.
  • baffle body 20 Due to the cylindrical design of the baffle body 20, which is received between the two closure elements 23, and centrally seated in the pressure distribution chamber 13, a further homogenization of the pressure distribution along the extension direction of the nozzle beam 1 is achieved, so that the nozzle strip 17 while maintaining a minimal pressure loss over its entire length is subjected to substantially the same pressure.
  • a plurality of spacers 29 are arranged on the baffle body 20, which are designed disk-like and center the baffle 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 supported against the inner wall.
  • the spacers 29 can sit firmly on the rod-shaped or cylindrical impact body 20 for this purpose.
  • the advantage is achieved that when dismantling one of the closure elements 23 of the baffle 20 can be removed, for example, for cleaning purposes from the pressure distribution chamber 13.
  • the diameter of the pressure chamber 1 1 is according to the embodiment 80mm, and the diameter of the pressure distribution chamber 13 is 35mm.
  • the chambers 1 1 and 13 have over the entire length of the nozzle beam 1 across a in Essentially cylindrical cross section.
  • the distance between the central axes of the two pressure chambers 1 1 and 13 is 92mm in this embodiment. This results in an ideal length of the flow holes 14 for homogeneous as possible, over the extension of the nozzle beam 1 uniform inflow of pressurized water into the pressure distribution 13.
  • baffle 20 centric in the pressure distribution chamber 13 results in a likewise homogenized and preferably vortex low Inflow of the pressurized water in the adjoining the pressure distribution chamber 13 slot 19 so that the nozzle strip 17 is applied over its entire length substantially uniformly with water.
  • 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 embodiment, in particular 46.1 mm, which is achieved in particular by a spring projection 27, the slot 19 extends and which projects into a recess 30 which is introduced in the lower part 16, as shown in Fig. 2.
  • the width of the slot 19 is for example about 10mm, and the length of the slot 19 in the longitudinal direction of the nozzle bar 1 is 3660mm. Equally distributed over the length of the slot 19, the bores 18 are arranged in the nozzle strip 17, so that results in a respective same energization of the bores 18, a uniform water curtain over the length of the nozzle beam 1.
  • constriction 21 is introduced, in particular it is provided that the constriction 21 adjoining the arrangement of the nozzle strip 17 has a gap of 2.5 mnn to 3 mnn, in particular of 2.8 mnn.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Nozzles (AREA)

Abstract

La présente invention concerne une rampe de jets d'eau (1) pour le traitement de fibres par jets d'eau, qui comprend une partie supérieure (10) s'étendant longitudinalement, dans laquelle est ménagée une chambre de pression (11) de forme allongée, ladite chambre de pression (11) présentant un côté extrémité doté d'une ouverture (12) pour l'alimentation en eau et un côté extrémité opposé fermé, partie supérieure (10) dans laquelle est ménagée une chambre de répartition de pression (13) s'étendant parallèlement à la chambre de pression (11) et le long de laquelle sont répartis plusieurs orifices d'écoulement (14) ménagés dans la paroi intermédiaire (15) entre la chambre de pression (11) et la chambre de répartition de pression (13) et par lesquels l'eau peut être acheminée de la chambre de pression (11) à la chambre de répartition de pression (13), et qui comprend une partie inférieure (16) s'étendant longitudinalement et agencée contre la partie supérieure (10) de manière étanche aux liquides, une rampe de pulvérisation (17) munie d'orifices (18) de sortie d'eau étant placée dans ou contre la partie inférieure (16), et une fente (19) étant ménagée dans ladite partie supérieure, laquelle s'étend entre la chambre de répartition de pression (13) et la rampe de pulvérisation (17) pour l'alimentation en eau de la rampe de pulvérisation (17). Selon l'invention, la distance (A) entre la rampe de pulvérisation (17) et l'axe central (M) de la chambre de répartition de pression (13) est de 40 mm à 50 mm.
EP17764395.4A 2016-10-12 2017-09-08 Rampe de jets d'eau pour le traitement de fibres par jets d'eau Active EP3526383B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016119482.4A DE102016119482A1 (de) 2016-10-12 2016-10-12 Düsenbalken für die Bearbeitung von Fasern mit Wasserstrahlen
PCT/EP2017/072575 WO2018068961A1 (fr) 2016-10-12 2017-09-08 Rampe de jets d'eau pour le traitement de fibres par jets d'eau

Publications (2)

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

Family

ID=59811329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17764395.4A Active EP3526383B1 (fr) 2016-10-12 2017-09-08 Rampe de jets d'eau pour le traitement de fibres par jets d'eau

Country Status (5)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016119480A1 (de) * 2016-10-12 2018-04-12 TRüTZSCHLER GMBH & CO. KG Düsenbalken für die Bearbeitung von Fasern mit Wasserstrahlen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725175B1 (fr) 1995-01-23 1999-03-24 FLEISSNER GmbH & Co. KG Maschinenfabrik Injecteur pour un dispositif envoyant de l'eau sous pression
DE19921694A1 (de) * 1999-05-12 2000-11-16 Fleissner Maschf Gmbh Co Düsenbalken an einer Vorrichtung zur Erzeugung von Flüssigkeitsstrahlen
DE19941729A1 (de) * 1999-09-01 2001-03-08 Fleissner Maschf Gmbh Co Düsenkörper zur Erzeugung von feinsten Flüssigkeitsstrahlen z. B. an Wasservernadelungseinrichtungen
DE10205151A1 (de) * 2002-02-07 2003-08-21 Fleissner Maschf Gmbh Co Düsenbalken an einer Vorrichtung zur Erzeugung von Flüssigkeitsstrahlen
CN100500969C (zh) * 2002-10-08 2009-06-17 三菱丽阳工程株式会社 加压水蒸汽喷出喷嘴和用该喷嘴制造无纺布的方法及装置
DE102005055939B3 (de) * 2005-11-24 2007-02-08 Fleissner Gmbh Düsenbalken in einer Vorrichtung zur Erzeugung von Flüssigkeitsstrahlen

Also Published As

Publication number Publication date
WO2018068961A1 (fr) 2018-04-19
JP2019531420A (ja) 2019-10-31
DE102016119482A1 (de) 2018-04-12
CN109790664B (zh) 2022-02-01
CN109790664A (zh) 2019-05-21
EP3526383B1 (fr) 2020-11-04

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