EP3526384B1 - Düsenbalken für die bearbeitung von fasern mit wasserstrahlen - Google Patents

Düsenbalken für die bearbeitung von fasern mit wasserstrahlen Download PDF

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Publication number
EP3526384B1
EP3526384B1 EP17768054.3A EP17768054A EP3526384B1 EP 3526384 B1 EP3526384 B1 EP 3526384B1 EP 17768054 A EP17768054 A EP 17768054A EP 3526384 B1 EP3526384 B1 EP 3526384B1
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EP
European Patent Office
Prior art keywords
pressure
chamber
pressure distribution
distribution chamber
water
Prior art date
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Active
Application number
EP17768054.3A
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German (de)
English (en)
French (fr)
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EP3526384A1 (de
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
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Truetzschler GmbH and Co KG
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Publication of EP3526384A1 publication Critical patent/EP3526384A1/de
Application granted granted Critical
Publication of EP3526384B1 publication Critical patent/EP3526384B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

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 an 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 is fed into the pressure chamber via the opening.
  • the water enters the pressure chamber through the opening at 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 rate is still 2.5 m / s on.
  • the nozzle bar is elongated and therefore slender, with 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 the nozzle strip arranged in the lower part or on the lower part.
  • 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 pressure is evened out across the width of the nozzle bar, so that there is no high pressure near the inflow opening for feeding in the water and a lower pressure of the water in front of the nozzle strip on the opposite, far side for feeding. Only through a uniform formation of the water jets over the entire width the nozzle bar ensures that the textile goods are processed evenly.
  • nozzle bars are permanently exposed to water, so that any pressure loss in the nozzle bar also entails a loss of energy when the system is operating. Consequently, the aim 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 slot is designed in such a way that an increased swirling of the water is generated for a uniform application of the nozzle strip from the inside, which, however, can be accompanied by an increased pressure loss.
  • 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 the pressure loss so that, for example, the narrow slot at the outlet of the pressure distribution chamber at the nozzle strip can be optimized, as in FIG EP 0 725 175 B1 described.
  • nozzle bar for the processing of textile goods with water jets, having an elongated upper part in which an elongated pressure chamber is introduced, the pressure chamber having an end side with an opening for feeding in 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 with several flow bores 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 in a liquid-tight manner on the upper part, 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 vein rteilhunt and the nozzle strip extends for the application of water to the nozzle strip.
  • the object of the invention is to further improve a nozzle bar for processing fibers with water jets, wherein 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 flow bores between the pressure chamber and the pressure distribution chamber are based on the direction of the elongate extension of the upper part have a distance of 25mm to 35mm and / or of 28mm to 32mm and / or of 30mm from one another.
  • the special design of the through-flow bores results in a surprisingly positive effect on the equalization of the outlet pressure via 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.
  • the geometric relationships of the flow bores result in an advantageous overflow of the water from the pressure chamber into the pressure distribution chamber at a speed of up to 11 m / s, for example, especially when the distance between the flow bores is 30 mm.
  • the pressure chamber is designed to be cylindrical and has a circular cross-section with a diameter of 70 mm to 90 mm and when the pressure distribution chamber is cylindrical and has a circular cross section with a diameter of 30mm to 40mm.
  • the flow bores have a circular cross section and have a first section adjoining the pressure chamber, which section has a smaller diameter than a second section adjoining the pressure distribution chamber.
  • the advantageous effect can be used that from the first section the water flows at a higher speed into a subsequent second section with a larger diameter, which causes eddies to calm down.
  • the resulting throttling effect of the first section with the smaller diameter also has the consequence that the flow velocity of the water is approximately the same through all flow bores. The result is very calm pressurized water application to the pressure distribution chamber.
  • the flow bores have a diameter of 3 to 4 mm in the first section and a diameter of 5 to 7 mm in the second section.
  • the flow bores preferably have a length of 8 to 12 mm in the first section and a length of 22 to 26 mm in the second section.
  • the preferred length and diameter ratios result in an inflow speed of the water of, for example, 11 m / s, which has proven advantageous.
  • Another significant influence has been determined by the length of the flow bores in the partition between the pressure chamber and the pressure distribution chamber, which can be determined to be around 33mm to 35mm. Consequently, the distance from the central axis of the Pressure chamber to the central axis of the pressure distribution chamber has an influence on the total pressure loss in the nozzle bar and on the most homogeneous pressure distribution of the water on the inside in front of the bores over the length of the nozzle strip.
  • a distance between the central axis of the pressure chamber and the central axis of the pressure distribution chamber of 80 mm to 100 mm, preferably 85 mm to 95 mm and particularly preferably 92 mm is particularly advantageous. This results in a length of the flow bores of 34.5mm.
  • the flow bores can be designed stepped with further advantage, and the opening of the flow bores in the pressure chamber has a smaller diameter than the opening of the flow bores in the pressure distribution chamber.
  • 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 particularly advantageously accommodated at its ends of its elongated cylindrical shape and / or the impact body has spacers distributed over its length, by means of which the impact body is held centrally 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 into 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 at all arises. Consequently, the pressure loss is also minimized with the best possible pressure distribution over the length of the nozzle bar.
  • 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 a closure element has the opening for the water supply 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.
  • 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. 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 sides 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 2nd 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 its 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, specifically 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 another 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 passing through 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 large number of flow bores 14 in the partition 15 and reach the pressure distribution chamber 13.
  • the cylindrical design of the impact body 20, which is held between the two closure elements 23 and which is seated centrally in the pressure distribution chamber 13, further homogenizes the pressure distribution along the direction in which the nozzle bar 1 extends, so that the nozzle strip 17 while maintaining a minimal pressure loss is applied over its entire length with substantially the same pressure.
  • 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 flow bores 14 between the pressure chamber 11 and the pressure distribution chamber 13 are spaced from 25mm to 35mm and / or from 28mm to 32mm and / or from 30mm to one another in relation to the direction of the elongated extension of the upper part 10.
  • 25 to 40 flow bores 14 per meter are formed in the partition 15.
  • the flow bores 14 have a circular cross section and have a first section I adjoining the pressure chamber 11, which has a smaller diameter than a second section II adjoining the pressure distribution chamber 13.
  • the example shows the flow bores 14 with a diameter of 3.5 mm in the first section I and with a diameter of 6mm in the second section II.
  • the length of the first section I has a value of 10mm and the length of the second section II has a value of 24.5mm.
  • the flow bores 14 are arranged equally distributed over a length of 3630 mm in a row and 121 flow bores 14 are arranged in the intermediate wall 15 in a row evenly distributed.
  • 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 essentially cylindrical cross section over the entire length of the nozzle bar 1.
  • the distance between the central axes of the two pressure chambers 11 and 13 is 92mm. This results in an ideal length of the flow bores 14 for the most homogeneous possible, uniform flow of the pressurized water into the pressure distribution chamber 13 over the extent of the nozzle bar 1, the length being, for example, 34.5 mm.
  • the arrangement of the impact body 20 centrally in the pressure distribution chamber 13 results in a likewise homogenized and preferably low-turbulence inflow of the pressurized water into the slot 19 adjoining the pressure distribution chamber 13, so that the Nozzle strip 17 is subjected to water essentially uniformly over its entire length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Nozzles (AREA)
EP17768054.3A 2016-10-12 2017-09-07 Düsenbalken für die bearbeitung von fasern mit wasserstrahlen Active EP3526384B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016119481.6A DE102016119481A1 (de) 2016-10-12 2016-10-12 Düsenbalken für die Bearbeitung von Fasern mit Wasserstrahlen
PCT/EP2017/072433 WO2018068952A1 (de) 2016-10-12 2017-09-07 Düsenbalken für die bearbeitung von fasern mit wasserstrahlen

Publications (2)

Publication Number Publication Date
EP3526384A1 EP3526384A1 (de) 2019-08-21
EP3526384B1 true EP3526384B1 (de) 2020-08-12

Family

ID=59887232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17768054.3A Active EP3526384B1 (de) 2016-10-12 2017-09-07 Düsenbalken für die bearbeitung von fasern mit wasserstrahlen

Country Status (5)

Country Link
EP (1) EP3526384B1 (ja)
JP (1) JP2019531421A (ja)
CN (1) CN109790665B (ja)
DE (1) DE102016119481A1 (ja)
WO (1) WO2018068952A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117085378B (zh) * 2023-10-19 2024-01-02 烟台核信环保设备有限公司 一种改良型塑料滤板及立式压滤机

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3613999A (en) * 1970-04-29 1971-10-19 Du Pont Apparatus for jetting liquid onto fibrous material
DE59601476D1 (de) * 1995-01-23 1999-04-29 Fleissner Maschf Gmbh Co Düsenbalken an einer Vorrichtung zur Erzeugung von Flüssigkeitsstrahlen
FR2795099B1 (fr) * 1999-06-17 2001-07-13 Icbt Perfojet Sa Dispositif pour le traitement de materiaux en feuille au moyen de jets d'eau sous pression
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
DE102005005463A1 (de) * 2005-02-04 2006-08-10 Fleissner Gmbh Düsenbalken mit Mitteln zur Einstellung der Arbeitsbreite sowie Verfahren zur Einstellung der Arbeitsbreite eines Düsenstreifens
DE102005055939B3 (de) 2005-11-24 2007-02-08 Fleissner Gmbh Düsenbalken in einer Vorrichtung zur Erzeugung von Flüssigkeitsstrahlen
EP2302120B1 (de) * 2009-09-22 2012-06-20 Groz-Beckert KG Injektor für eine Textilbearbeitungsmaschine
CN104060403A (zh) * 2013-03-24 2014-09-24 仪征市四方轻纺机械有限公司 一种水刺头的水流压力控制装置
CN203546354U (zh) * 2013-09-29 2014-04-16 无锡众望四维科技有限公司 水刺固网机的高压水刺头
DE102016119483A1 (de) * 2016-10-12 2018-04-12 TRüTZSCHLER GMBH & CO. KG Düsenbalken für die Bearbeitung von Fasern mit Wasserstrahlen
DE102016119480A1 (de) * 2016-10-12 2018-04-12 TRüTZSCHLER GMBH & CO. KG Düsenbalken für die Bearbeitung von Fasern mit Wasserstrahlen

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
JP2019531421A (ja) 2019-10-31
CN109790665A (zh) 2019-05-21
CN109790665B (zh) 2021-07-30
DE102016119481A1 (de) 2018-04-12
EP3526384A1 (de) 2019-08-21
WO2018068952A1 (de) 2018-04-19

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