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EP3165861B1 - Dispositif de traitement traversant de matériaux en bande - Google Patents

Dispositif de traitement traversant de matériaux en bande Download PDF

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Publication number
EP3165861B1
EP3165861B1 EP16203804.6A EP16203804A EP3165861B1 EP 3165861 B1 EP3165861 B1 EP 3165861B1 EP 16203804 A EP16203804 A EP 16203804A EP 3165861 B1 EP3165861 B1 EP 3165861B1
Authority
EP
European Patent Office
Prior art keywords
chamber
sieve drum
treatment
drum
sieve
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.)
Not-in-force
Application number
EP16203804.6A
Other languages
German (de)
English (en)
Other versions
EP3165861A1 (fr
Inventor
Markus Böhn
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 and Man Made Fibers GmbH
Original Assignee
Truetzschler Nonwovens and Man Made Fibers 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 Truetzschler Nonwovens and Man Made Fibers GmbH filed Critical Truetzschler Nonwovens and Man Made Fibers GmbH
Publication of EP3165861A1 publication Critical patent/EP3165861A1/fr
Application granted granted Critical
Publication of EP3165861B1 publication Critical patent/EP3165861B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/16—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning perforated in combination with hot air blowing or suction devices, e.g. sieve drum dryers

Definitions

  • the invention relates to a device for flowing through treatment, in particular for drying sheet material, according to the preamble of claim 1.
  • a sieve drum device for flowing heat treatment of gas-permeable material webs.
  • a screen drum carrying the material web and permeable in its outer circumference is rotatably mounted in a housing.
  • the screen drum is placed under suction by means of a ventilator that is assigned on the face side.
  • the extracted air is heated in a part of the housing designed as air treatment (fan space) and conducted into the treatment space surrounding the sieve drum. Due to the negative pressure inside the sieve drum, the heated air flows through the textile material web carried by the sieve drum.
  • DE1 604 872 A discloses a method for treating goods, in particular for drying band-shaped goods; which is passed over one or more circulating means of transport (e.g. sieve drums) and a treatment medium (e.g. air) flows through it, with the material in a first section of drying, in particular in the inlet zone, of a large amount of the treatment medium and in the subsequent section of the Drying is flowed through by a smaller amount of the drying medium.
  • circulating means of transport e.g. sieve drums
  • a treatment medium e.g. air
  • this sieve drum is assigned in the area of the wrapping a bowl-shaped sieve cover covering the circumference of the sieve drum.
  • the screen cover In In the operating position, the screen cover is concentric to the screen drum axis, ie the screen cover runs parallel to the screen drum surface. Due to the perforated sheet metal ceiling, there is a pressure difference between the treatment room and the screen drum.
  • the object of the present invention is to improve a device of the generic type.
  • the treatment room In relation to the direction of rotation of the sieve drum, the treatment room essentially runs according to one embodiment of the invention in the manner of a helix, namely towards the back of the sieve drum surface. If the area of the treatment room comprising the sieve drum is unwound according to the invention on one level, the treatment room then presents itself as wedge-shaped. This tapering of the treatment room takes into account the fact that with even suction of the material web wrapping around the sieve drum in the rear area of the treatment room only a small amount of gas has to flow. The air supply to the treatment room always takes place in the area in which the wall of the treatment room is at the greatest distance from the surface of the screen drum.
  • the direction of web travel and thus the direction of rotation of the screen drum can run in the direction of the tapering treatment space, i.e. the material web to be dried runs into that area of the treatment room in which the wall is at a large distance from the surface of the screen drum. The distance from the wall then decreases in the direction of web travel - the treatment room becomes smaller. In principle, however, an opposite run of the material web is also possible. The material web runs into the narrow area of the treatment room - this widens in the direction of rotation of the screening drum.
  • the treatment room When viewed across the working width of the sieve drum, the treatment room can be at a constant distance from the surface of the sieve drum. It is also possible for the wall delimiting the treatment area to have a different spacing in the middle of the sieve drum width than at the edges.
  • the sieve drum surface is surrounded by a sieve cover or flow guiding elements such that a gas flow in the treatment room is essentially perpendicular to the sieve drum surface Flow arises.
  • the screen cover can have a constant perforation over the width and / or length.
  • the hole size and / or hole shape and / or the distribution can vary. It can be achieved, for example, that the material web is sucked through uniformly across the width.
  • the deflection of the gas flow in the treatment room to the flow in the area of the material web screen drum surface can also be carried out with suitably designed flow guide elements.
  • These can be baffles or streamlined baffles arranged one behind the other in the circumferential direction of the screening drum, which baffles are arranged above the drum surface in the form of strips over the width of the drum.
  • Figure 1 shows a screen drum S with an air-permeable outer peripheral surface.
  • the sieve drum S is rotatably mounted in a housing G and is connected in a manner not shown to a suction air generator.
  • the direction of rotation of the screen drum S is indicated by the arrow.
  • the interior of the housing G forms a treatment room BH for a material web M to be dried.
  • a material web M for example a nonwoven web, is guided around part of the outer peripheral surface of the screening drum S.
  • the material web M is fed into the housing G via a roller W1 and the outer circumference of the screen drum S is added and removed from the outer periphery via a second roller W2 and led out of the housing G.
  • the direction of movement of the material web M is indicated by the arrows.
  • a screen B is arranged fixed to the frame in the area not wrapped by the material web, by means of which suction is prevented in this area.
  • an air guide structure LS designed as a perforated plate is arranged fixed to the frame.
  • a screen cover SD designed as a perforated plate is arranged inside the treatment room BH above the area of the screen drum S wrapped by the material web M.
  • the SD screen ceiling is fixed to the frame, i.e. firmly connected to the housing G.
  • the housing G surrounding the screening drum S is connected via a line system L to an air treatment LA having a fan, which sucks the air out of the screening drum S and heats it up. Part of the air from the sieve drum S is discharged to the outside as exhaust air - fresh air is supplied accordingly. This results in a removal of the moisture expelled from the material web.
  • the line system L is designed in such a way that the air supplied to the interior of the housing G - the treatment room BH - flows in uniformly over the width of the screening drum S.
  • the wall W of the housing G delimiting the treatment area BH in the area of the wrapping of the material web M runs in the form of a curve approaching the outer circumference of the screen drum S such that the distance a1, a2, a3 from the outer circumference of the screen drum S in the direction of rotation of the screen drum S (or to the screen cover SD or the flow guide elements surrounding the screen drum S) decreases continuously.
  • the treatment room BH between the wall W of the housing G and the outer circumference of the screening drum S thus tapers in the direction of rotation of the screening drum S.
  • the air introduced via the line system L in the region of the inlet of the material web M flows in the direction of the arrows following the rotation of the screen drum S and is first deflected by the vacuum S of the drum S through the screen cover SD in the direction of the drum S and sucked through the material web M.
  • the flow is distributed evenly over the width of the drum S within the treatment room.
  • the treatment room which tapers in the direction of drum rotation, takes into account the amount of air that is sucked through, stabilizes the even flow and produces a drying result that can be achieved with reduced energy consumption (heating output, amount of air) and is uniform over the width of the material web M.
  • the wall W delimiting the treatment area BH is formed in the area of the wrapping of the material web M from sections which are flat surfaces which approach the outer circumference of the screening drum S in the manner of a polygonal line. Also in this embodiment, the direction of rotation increases Sieve drum S the distance a1, a2, a3 from the outer circumference of the sieve drum S steadily.
  • FIG 3 in principle the flow of air within the treatment room BH is shown in the area above the sieve cover SD spanning the sieve drum S.
  • the sieve drum S is subjected to negative pressure by means of a fan located in the air treatment LA.
  • the extracted air is mixed with fresh air and warmed up in the air treatment LA.
  • the heated air is then introduced into the treatment room surrounding the screen drum S above the screen cover SD, such that the air flow above the screen cover SD essentially follows the surface of the rotating screen drum.
  • Figure 4 shows the screen drum S in plan view, and that as section AA according Figure 1 .
  • the suction of the air flowing into the interior of the screening drum S takes place via an expansion chamber E which is assigned to the side of the screening drum S and whose interior is designed concentrically to the axis of the screening drum S.
  • the inside diameter d E of the expansion chamber is larger than the inside diameter d S of that of the screening drum S. This enables an optimal outflow of the air from the screening drum S - indicated by the flow arrows in the Figure 4 . In particular, this causes the suction draft to be made more uniform across the width of the screening drum.
  • the expansion chamber E is connected via an air duct to the air treatment LA, not shown here.
  • FIG 5 An embodiment of the air supply to the treatment room BH is shown.
  • the housing G surrounds the sieve drum S with a wall W approaching the surface of the sieve drum S in a helical shape and thus forms the treatment room BH.
  • the air coming from the air treatment LA, not shown, is via a first feed chamber Z with a wedge-shaped lowering Top of a deflection chamber U adjoining the feed chamber Z is supplied.
  • the deflection chamber U is used to apply air to the treatment area BH on its underside in the area in which the wall W is at the greatest distance from the surface of the screening drum S (cf. here Fig. 1 and 2nd ).
  • the feed chamber Z, the deflection chamber U and the treatment room BH have the same width - the working width of the sieve drum S.
  • a perforated plate structure LB or correspondingly suitable air guiding elements are arranged within the deflection chamber U. This perforated sheet structure LB causes uniform air exposure to the treatment room BH.
  • the Figure 6 shows a possibility of recirculation of air, that is, how the air is returned from the air treatment LA to the treatment room BH.
  • the arrangement of the described and air-conveying parts such as treatment room BH, expansion chamber E, air duct L, supply chamber Z and air treatment LA is shown in a view from above (compared to the perspective view according to FIG Figure 5 ).
  • the direction of air flow in the parts is marked with a block arrow.
  • the expansion chamber E can also be arranged on the side of the screening drum S opposite the recirculation of air (air treatment LA, air line L, supply chamber Z).
  • FIG. 1 An expansion chamber E is assigned to each of the two front ends of the screening drum S.
  • FIG 8 a recirculation air supply on both sides, in which two air treatment units LA and two expansion chambers E are provided are.
  • An expansion chamber is assigned to each of the two front ends of the screening drum S, from which the air is supplied to an air treatment unit LA.
  • FIG 9 the supply chamber Z belonging to the two-sided air supply in the in Figure 8 shown arrow direction shown.
  • the feed chamber Z has an air guide channel L at both ends and is acted upon by air from the respective air preparation (not shown).
  • the top of the feed chamber slopes from the sides towards the center, so that the chamber has two wedge-shaped areas.
  • the air supplied on both sides, as indicated by the flow arrows, is directed evenly across the width into the deflection chamber U located under the feed chamber Z and from there into the adjoining treatment room BH.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Drying Of Solid Materials (AREA)

Claims (7)

  1. Dispositif destiné au traitement en continu d'un matériau poreux sous forme de bande, en particulier au séchage de matière tissée ou non-tissée, doté des caractéristiques suivantes :
    - un tambour à tamis (S) disposé de manière rotative et relié à un générateur de vide, doté d'un périmètre extérieur perméable et d'une largeur de travail, dans lequel la bande de matériau à traiter (M) parcourt une partie du périmètre extérieur du tambour à tamis (S),
    - un compartiment de traitement (BH) accueillant le tambour à tamis (S), exposé au gaz de traitement, de préférence de l'air chaud,
    - une couverture perforée (SD) ou un élément déflecteur de flux correspondant, à l'intérieur du compartiment de traitement (BH), entourant le tambour à tamis (S) dans la zone où s'enroule la bande de matériau (M), au moyen de laquelle ou duquel le flux de gaz dans le compartiment de traitement (BH) est guidé vers la surface du tambour à tamis,
    dans lequel la paroi (W) du compartiment de traitement (BH) orientée vers le périmètre extérieur du tambour à tamis (S) dans la zone où s'enroule la bande de matériau (M) comporte dans cette zone un écart décroissant par rapport à la surface du tambour à tamis (S), caractérisé en ce que
    le gaz peut être conduit au compartiment de traitement (BH), sur la face inférieure de celui-ci, par le biais d'une chambre d'alimentation (Z) dotée d'une face supérieure s'abaissant en forme de coin et par le biais d'une chambre de déviation (U) se raccordant en-dessous de la chambre d'alimentation, dans lequel la chambre d'alimentation (Z) est agencée avec la chambre de déviation (U) dans la zone du compartiment de traitement (BH), à l'intérieur de laquelle la paroi présente l'écart le plus élevé par rapport à la surface du tambour à tamis, dans lequel la chambre d'alimentation (Z), la chambre de déviation (U) ainsi que le compartiment de traitement (BH) ont la même largeur, laquelle correspond à la largeur de travail du tambour à tamis (S).
  2. Dispositif destiné au traitement en continu d'un matériau poreux sous forme de bande, en particulier au séchage de matière tissée ou non-tissée, doté des caractéristiques suivantes :
    - un tambour à tamis (S) disposé de manière rotative et relié à un générateur de vide, doté d'un périmètre extérieur perméable et d'une largeur de travail, dans lequel la bande de matériau à traiter (M) parcourt une partie du périmètre extérieur du tambour à tamis (S),
    - un compartiment de traitement (BH) accueillant le tambour à tamis (S), exposé au gaz de traitement, de préférence de l'air chaud,
    - une couverture perforée (SD) ou un élément déflecteur de flux correspondant, à l'intérieur du compartiment de traitement (BH), entourant le tambour à tamis (S) dans la zone où s'enroule la bande de matériau (M), au moyen de laquelle ou duquel le flux de gaz dans le compartiment de traitement (BH) est guidé vers la surface du tambour à tamis,
    dans lequel la paroi (W) du compartiment de traitement (BH) orientée vers le périmètre extérieur du tambour à tamis (S) dans la zone où s'enroule la bande de matériau (M) comporte dans cette zone un écart décroissant par rapport à la surface du tambour à tamis (S),
    caractérisé en ce que le gaz peut être conduit au compartiment de traitement (BH), sur la face inférieure de celui-ci, par le biais d'une chambre d'alimentation (Z) exposée des deux côtés dotée d'une face supérieure, laquelle s'étend respectivement de manière inclinée depuis les côtés jusqu'au milieu, de sorte que la chambre d'alimentation (Z) comporte deux zones en forme de coin et par le biais d'une chambre de déviation (U) se raccordant en-dessous de la chambre d'alimentation, dans lequel la chambre d'alimentation (Z) est agencée avec la chambre de déviation (U) dans la zone du compartiment de traitement (BH), à l'intérieur de laquelle la paroi présente l'écart le plus élevé par rapport à la surface du tambour à tamis, dans lequel la chambre d'alimentation (Z), la chambre de déviation (U) ainsi que le compartiment de traitement (BH) ont la même largeur, laquelle correspond à la largeur de travail du tambour à tamis (S).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'une structure en tôle perforée (LB) ou des éléments de conduite d'air sont agencés à l'intérieur de la chambre de déviation (U).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le tambour à tamis (S) comporte sur une face une chambre d'expansion (E) reliée au générateur de vide (LA), dotée d'un diamètre intérieur (dE) supérieur au diamètre intérieur (dS) du tambour à tamis (S).
  5. Dispositif selon la revendication 4, caractérisé en ce que le tambour à tamis (S) comporte une chambre d'expansion (E) sur chacune de ses deux faces.
  6. Dispositif selon la revendication 5, caractérisé en ce que les deux chambres d'expansion (E) du tambour à tamis (S) sont reliées à un système de traitement d'air (LA) au moyen d'une conduite d'air (L).
  7. Dispositif selon la revendication 5, caractérisé en ce que les deux chambres d'expansion (E) du tambour à tamis (S) sont reliées chacun à un système de traitement d'air (LA) respectif au moyen d'une conduite d'air (L).
EP16203804.6A 2010-04-15 2011-03-19 Dispositif de traitement traversant de matériaux en bande Not-in-force EP3165861B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102010015080 2010-04-15
DE102010018357A DE102010018357A1 (de) 2010-04-15 2010-04-27 Vorrichtung zum durchströmenden Behandeln von bahnförmigem Material
PCT/DE2011/000293 WO2011127885A1 (fr) 2010-04-15 2011-03-19 Dispositif de traitement d'un matériau en bande par passage au travers du matériau
EP11724522.5A EP2558805B1 (fr) 2010-04-15 2011-03-19 Dispositif de traitement d'un matériau en bande par passage au travers du matériau

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP11724522.5A Division EP2558805B1 (fr) 2010-04-15 2011-03-19 Dispositif de traitement d'un matériau en bande par passage au travers du matériau
EP11724522.5A Division-Into EP2558805B1 (fr) 2010-04-15 2011-03-19 Dispositif de traitement d'un matériau en bande par passage au travers du matériau

Publications (2)

Publication Number Publication Date
EP3165861A1 EP3165861A1 (fr) 2017-05-10
EP3165861B1 true EP3165861B1 (fr) 2020-04-29

Family

ID=44730760

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11724522.5A Not-in-force EP2558805B1 (fr) 2010-04-15 2011-03-19 Dispositif de traitement d'un matériau en bande par passage au travers du matériau
EP16203804.6A Not-in-force EP3165861B1 (fr) 2010-04-15 2011-03-19 Dispositif de traitement traversant de matériaux en bande

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11724522.5A Not-in-force EP2558805B1 (fr) 2010-04-15 2011-03-19 Dispositif de traitement d'un matériau en bande par passage au travers du matériau

Country Status (5)

Country Link
US (1) US8997371B2 (fr)
EP (2) EP2558805B1 (fr)
CN (1) CN102859306B (fr)
DE (1) DE102010018357A1 (fr)
WO (1) WO2011127885A1 (fr)

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DE102012221380A1 (de) * 2012-11-22 2014-05-22 TRüTZSCHLER GMBH & CO. KG Vorrichtung und Verfahren zum Behandeln eines vorzugsweise bahnförmigen Guts mit einem gasförmigen Behandlungsmedium
DE102013114075A1 (de) 2013-12-16 2015-06-18 TRüTZSCHLER GMBH & CO. KG Vorrichtung und Verfahren zum thermischen Verfestigen einer textilen Warenbahn
DE102015118596A1 (de) * 2015-10-30 2017-05-04 TRüTZSCHLER GMBH & CO. KG Vorrichtung und Verfahren zum thermischen Behandeln einer textilen Warenbahn
US10240292B2 (en) * 2016-02-29 2019-03-26 Kimberly-Clark Worldwide, Inc. Through-air drying apparatus and methods of manufacture
US10132564B1 (en) * 2016-03-23 2018-11-20 THC Therapeutics, Inc. Plant dryer with improved convection flow
DE102016109413A1 (de) * 2016-05-23 2017-11-23 Trützschler GmbH + Co KG Textilmaschinenfabrik Trockner für eine textile Warenbahn mit einer verbesserten Heißluftzufuhr

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Also Published As

Publication number Publication date
EP2558805A1 (fr) 2013-02-20
US8997371B2 (en) 2015-04-07
EP2558805B1 (fr) 2018-09-12
DE102010018357A1 (de) 2011-10-20
WO2011127885A1 (fr) 2011-10-20
CN102859306B (zh) 2015-03-25
US20130025150A1 (en) 2013-01-31
CN102859306A (zh) 2013-01-02
EP3165861A1 (fr) 2017-05-10

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