EP0545375B1 - Selbstdichtendes Düsenpaket - Google Patents

Selbstdichtendes Düsenpaket Download PDF

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Publication number
EP0545375B1
EP0545375B1 EP92120531A EP92120531A EP0545375B1 EP 0545375 B1 EP0545375 B1 EP 0545375B1 EP 92120531 A EP92120531 A EP 92120531A EP 92120531 A EP92120531 A EP 92120531A EP 0545375 B1 EP0545375 B1 EP 0545375B1
Authority
EP
European Patent Office
Prior art keywords
seal
nozzle
pressure piece
pot
channel
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.)
Expired - Lifetime
Application number
EP92120531A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0545375A3 (en
EP0545375A2 (de
Inventor
Wolfgang Peschke
Herbert Scheiber
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.)
Akzo Nobel NV
Original Assignee
Akzo Nobel NV
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 Akzo Nobel NV filed Critical Akzo Nobel NV
Publication of EP0545375A2 publication Critical patent/EP0545375A2/de
Publication of EP0545375A3 publication Critical patent/EP0545375A3/de
Application granted granted Critical
Publication of EP0545375B1 publication Critical patent/EP0545375B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/08—Supporting spinnerettes or other parts of spinnerette packs

Definitions

  • the invention relates to a self-sealing nozzle packet for a spinning head of a spinning machine for spinning endless thread from a viscous spinning liquid under high pressure, consisting of a nozzle pot, in which a nozzle plate is inserted and covered by a filter packet, a piston-like pressure piece that can move axially in the nozzle pot central channel, the upper surface of which adjoins the lower surface of a distributor block which has at least one channel, an upper seal between the pressure piece and the distributor block, a middle seal for sealing the space above the filter pack from the nozzle cup and a lower flat one Ring seal to seal the nozzle cup downwards.
  • Such a self-sealing nozzle package and its mode of operation are known from US-A-4,494,921, EP-A2-0 300 120 and EP-B1-0 163 248.
  • This known nozzle package can also have a distributor plate (perforated plate) between the nozzle plate and the filter package, which is pot-like at the top is designed to hold the filter package (EP-B1-0 163 248; Item 27).
  • this known nozzle package has three, two of which are inadequate seals, one of which, the metal membrane seal, is relatively expensive.
  • Another disadvantage was that a relatively large free space was formed by the membrane seal below it, which led to an undesirably long dwell time of the spinning liquid, especially at low thread titers, which resulted in an undesirable change in the same, polymer degradation and the like.
  • the present invention was therefore based on the object of providing a generic self-sealing nozzle package which no longer has the disadvantages mentioned above and which is particularly reliable is self-sealing and therefore more reliable, is simpler in construction and therefore cheaper, and has a smaller free space above the filter package, which leads to a reduction in the dwell time of the spinning liquid in this area.
  • One part of the task was to be able to increase the filter area of the filter pack even when using a distributor plate (perforated plate).
  • the upper seal is tubular, has an inside diameter which corresponds to the diameter of the central channel of the pressure piece or the channel of the distributor block, and extends into both channels, that the upper surface of the pressure piece is firmly attached to the lower surface of the distributor block under operating conditions, that the pressure piece is designed like a pot downwards to receive the filter pack and possibly a distributor plate and that the middle seal is also tubular and the annular gap between the nozzle cup and covers and seals the edge of the pot-like configuration of the pressure piece.
  • the principle of the solution on which the invention is based consists in designing the pressure piece movable in the nozzle pot in such a way that annular gaps are formed at the top between the pressure piece and the distributor block and between the pressure piece and the nozzle pot or the distributor plate at the bottom, which initially extend radially from the inside to the outside , the width of the annular gaps (gap width) possibly changing during operational use, and that this Annular gaps are each covered with a tubular seal, so that the seals are pressed radially outward onto the annular gap by the pressurized spinning liquid and thus effect a fluid-tight seal.
  • the middle, tubular seal is the upward and / or downward leg of a seal with an L-shaped cross section (angled seal).
  • the middle, tubular seal thus also the angled seal, can be arranged above the nozzle plate, the upper part of the seal or the upwardly pointing leg of the angled seal extending into the pot-like configuration of the pressure piece, i.e. into the pot-like configuration of the pressure piece protrudes.
  • An important aspect of the invention is that the sealing effect of the upper and middle, tubular seals, or the upward and / or downward leg of the angular seal, is achieved in that the seals by the high pressure of the spinning liquid (for example 50 to 80 bar) are pressed radially outwards and slightly expanded.
  • the membrane seal is no longer necessary and when using an angled seal only two instead of three seals are required, as the upward and / or downward leg of the angled seal performs the sealing function of the membrane seal. This also means that the space above the filter package can now be made much smaller. The resultant advantage, namely shorter residence time of the spinning liquid, has already been explained.
  • the self-sealing effect takes place in the nozzle package according to the invention in the same way as in the known one.
  • the pressure piece moves slightly within the nozzle pot by only a few tenths of a millimeter until the upper surface of the pressure piece lies firmly against the lower surface of the distributor block.
  • the pressure acts downwards in such a way that the filter pack or - if available - the distributor plate (perforated plate) or the nozzle plate is pressed onto the lower, flat ring seal which, in the case of an angular seal, is formed by the radially inward leg of the angular seal becomes.
  • the perforated plate which can be used optionally, is not pot-shaped at the top, but is also flat at the top. This leads to an appreciable increase in the filter area of the filter pack, which can be, for example, approximately 25%, since the outer diameter of the filter pack corresponds to the inner diameter of the nozzle cup in the lower region.
  • the filter pack can have the usual means corresponding to the state of the art, such as sieves with different mesh sizes, filter granules, for example sand, with different grain sizes, disks made of sintered materials, etc.
  • the distributor plate is expediently provided with a narrow border at the top, the height of which corresponds to the bed height of the filter granulate layer.
  • Its design with regard to structure, height, selection of filter media, etc. depends on the type of viscous spinning liquid, which is the melt of thermoplastic polymers such as polyester, polyamide, etc., a solution, such as polyacrylonitrile in solution with DMF, and others can act.
  • soft aluminum has proven to be the best material for the seals, but soft iron and other easily deformable materials are also suitable. Suitable materials are those that can withstand the high temperatures of the spinning liquid, which can be up to 450 ° C, for example, in the case of polymer melts.
  • the central channel in the pressure piece can have the same diameter or cross-section over its entire length, but can also have a diameter or cross-section that widens or decreases in the flow direction, that is to say it has a conical shape.
  • a mixing element preferably a so-called static mixer, can be arranged in the channel of the pressure piece.
  • the nozzle cup can be attached to the distributor block using conventional means such as screws or in some other way.
  • this has proven to be particularly advantageous known connection using a multi-start thread, which is arranged on the outer circumference of the lower part of the distributor block and as a cooperating counterpart on the inner circumference of the upper part of the nozzle pot. It is possible to achieve a sufficient permanent attachment of the nozzle cup with a rotation of only 180 ° or at most 360 ° of the same. It is important to dimension the pitch of the thread so small that self-locking against loosening of this screw connection is achieved. Otherwise, another protection against rotation, for example a locking pin, must be provided.
  • the shape and dimensions of the nozzle package and its parts are not subject to any restrictions - neither upwards nor downwards - and are adapted to the respective requirements.
  • Another significant advantage of the nozzle package according to the invention is that its self-sealing effect always occurs reliably even after repeated complete - intentional or unwanted - pressure drop or pressure reduction.
  • FIG. 2 an embodiment of the pressure piece 4 is shown.
  • the parts 5; 6; 7; 10; 12 and 20, which have already been explained above in relation to FIG. 1, are not listed and described again here.
  • 21 designates one of three bores, for example, which make it easier to fix the pressure piece 4 while inserting the filter pack (3) and possibly the distributor plate (11) by means of a corresponding number of pins arranged on a base.
  • the pressure piece 4 is reversed around, so with the surface 5 down.
  • the channel 12 has in its upper end section the extension 22 for receiving the lower part of the seal 10.
  • FIG. 3 differs from the embodiment shown in FIG. 1 only in that the central, tubular seal 14 and the lower, flat seal 15 are not part of an angular seal.
  • the lower, flat seal 15 is arranged below the nozzle plate 2. Since all other parts are identical to the parts shown in Figure 1, a further description of this embodiment is omitted.
  • FIGS. 4 to 7 essentially differ only in the design of the pressure piece 4 and, if present, the perforated plate 11 and the design and arrangement of the seals 14 and 15. All other parts are therefore only provided with item numbers. if they are mentioned in the description below. In Figures 5 to 7, the upper parts and the filter pack (3) are also omitted. A more detailed description of these figures than the following is unnecessary with regard to the description of FIGS. 1 to 3.
  • FIG. 4 shows an embodiment in which no distributor plate (11) is used, so that the filter pack 3 lies directly on the nozzle plate 2.
  • the middle, tubular seal 14 and the lower, flat seal 15 are again formed by the legs of an angular seal 13. In this embodiment, this is arranged below the nozzle plate 2.
  • the middle, tubular seal 14 is arranged above the distributor plate 11, the lower, flat seal 15 between the distributor plate 11 and the nozzle plate 2.
  • the distributor plate 11 is not flat at the top, but rather pot-like - for example for receiving of filter granules such as sand or the like. - educated.
  • the central, tubular seal 14 protrudes into the pot-like part of the distributor plate 11 and the pressure piece 4 and lies against the inner surface of the "pot rim".
  • annular gap 16 between the lower edge of the pot-like design of the pressure piece 4 and the upper edge of the pot-like design of the distributor plate 11, which is covered by the central, tubular seal 14, can be clearly seen, even if it is caused by the movement of the pressure piece 4 upwards, for example to double the width.
  • FIG. 6 corresponds essentially to that shown in Figure 5, but here the central, tubular seal 14 is arranged in an annular groove, which is at the lower end of the pot-like configuration of the pressure piece 4 and at the upper end of the pot-like configuration of the distributor plate 11 is arranged.
  • FIG. 7 essentially corresponds to that shown in FIG. In this embodiment, however, the radially outwardly leading annular gap 16 covered by the central, tubular seal 14 does not run horizontally, as in the previously described embodiments, but diagonally upwards. It might as well be sloping downwards. This does not affect the sealing effect.
  • FIG. 8 shows a double angular seal in longitudinal section, through which the central, tubular seal 14 is formed both by the upward and downward legs 14a and 14b.
  • the lower, flat seal 15 is also formed here, as in the case of a simple angular seal, by the leg pointing inwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP92120531A 1991-12-06 1992-12-02 Selbstdichtendes Düsenpaket Expired - Lifetime EP0545375B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4140269 1991-12-06
DE4140269 1991-12-06

Publications (3)

Publication Number Publication Date
EP0545375A2 EP0545375A2 (de) 1993-06-09
EP0545375A3 EP0545375A3 (en) 1993-12-08
EP0545375B1 true EP0545375B1 (de) 1995-11-15

Family

ID=6446445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120531A Expired - Lifetime EP0545375B1 (de) 1991-12-06 1992-12-02 Selbstdichtendes Düsenpaket

Country Status (6)

Country Link
US (1) US5387097A (enrdf_load_stackoverflow)
EP (1) EP0545375B1 (enrdf_load_stackoverflow)
KR (1) KR930013231A (enrdf_load_stackoverflow)
CN (1) CN1031655C (enrdf_load_stackoverflow)
DE (2) DE4236570A1 (enrdf_load_stackoverflow)
TW (1) TW224147B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10014292B4 (de) * 2000-03-23 2008-04-03 Lurgi Zimmer Gmbh Selbstdichtende Sandfilterdüse
DE102007034092A1 (de) 2007-07-21 2009-01-22 Oerlikon Textile Gmbh & Co. Kg Schmelzspinnvorrichtung

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19643425C2 (de) * 1996-10-22 1999-12-02 Geb Schroeder Beeck Sandlose Spinndüse
DE19821406A1 (de) * 1998-05-13 1999-11-18 Lurgi Zimmer Ag Abdichtungselement für Schmelzekanäle
KR100302319B1 (ko) * 1999-07-06 2001-09-22 홍덕희 열용융 방사장치의 노즐팩 구조
DE19935982A1 (de) * 1999-07-30 2001-02-01 Lurgi Zimmer Ag Selbstdichtende Kompaktdüse für Schmelzspinnverfahren
WO2003029534A1 (de) * 2001-09-28 2003-04-10 Saurer Gmbh & Co. Kg Spinndüse
DE10160204B4 (de) * 2001-12-07 2006-01-26 Zimmer Ag Düsenblock mit einer Stützplatte
DE10205465A1 (de) * 2002-02-08 2003-08-28 Zimmer Ag Düsenblock zur Herstellung synthetischer Fäden und Fasern
DE10314294A1 (de) 2003-03-29 2004-10-07 Saurer Gmbh & Co. Kg Vorrichtung zum Schmelzspinnen
CN100368606C (zh) * 2005-11-14 2008-02-13 中国石化仪征化纤股份有限公司 螺栓紧固式高产能紧凑上装式纺丝组件
JP5452243B2 (ja) * 2010-01-19 2014-03-26 Ｔｍｔマシナリー株式会社 溶融紡糸装置の紡糸パック
DE102013014568A1 (de) 2012-09-26 2014-03-27 Oerlikon Textile Gmbh & Co. Kg Düsenpaket zum Schmelzspinnen
DE102014000305A1 (de) * 2014-01-10 2015-07-16 Oerlikon Textile Gmbh & Co. Kg Spinndüsenvorrichtung
CN108411387A (zh) * 2018-04-20 2018-08-17 中国纺织科学研究院有限公司 熔体纺丝设备
CN109234824B (zh) * 2018-09-20 2020-03-03 深圳市恩裳纺织品有限公司 一种再生聚酯纤维纺丝工艺
CN108866663B (zh) * 2018-09-20 2020-01-21 杭州金象纺织有限公司 一种再生聚酯纤维纺丝装置
CN115233321B (zh) * 2021-04-23 2024-09-10 江苏金斗重工有限公司 一种莱赛尔纤维纺丝机熔体分配梁

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10014292B4 (de) * 2000-03-23 2008-04-03 Lurgi Zimmer Gmbh Selbstdichtende Sandfilterdüse
DE102007034092A1 (de) 2007-07-21 2009-01-22 Oerlikon Textile Gmbh & Co. Kg Schmelzspinnvorrichtung

Also Published As

Publication number Publication date
CN1031655C (zh) 1996-04-24
US5387097A (en) 1995-02-07
CN1077505A (zh) 1993-10-20
DE4236570A1 (enrdf_load_stackoverflow) 1993-06-09
EP0545375A3 (en) 1993-12-08
EP0545375A2 (de) 1993-06-09
DE59204347D1 (de) 1995-12-21
KR930013231A (ko) 1993-07-21
TW224147B (enrdf_load_stackoverflow) 1994-05-21

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