EP2633251A1 - Device for the throughflow treatment of web-shaped material - Google Patents

Device for the throughflow treatment of web-shaped material

Info

Publication number
EP2633251A1
EP2633251A1 EP11779120.2A EP11779120A EP2633251A1 EP 2633251 A1 EP2633251 A1 EP 2633251A1 EP 11779120 A EP11779120 A EP 11779120A EP 2633251 A1 EP2633251 A1 EP 2633251A1
Authority
EP
European Patent Office
Prior art keywords
drum
marked
screen
web
screen drum
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
EP11779120.2A
Other languages
German (de)
French (fr)
Other versions
EP2633251B1 (en
Inventor
Stephan Hajdu
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 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 GmbH filed Critical Truetzschler Nonwovens GmbH
Publication of EP2633251A1 publication Critical patent/EP2633251A1/en
Application granted granted Critical
Publication of EP2633251B1 publication Critical patent/EP2633251B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area

Definitions

  • the invention relates to a device for through-flow treatment, in particular for drying sheet-like material according to the preamble of claim 1.
  • a screen drum device for the continuous heat treatment of gas-permeable material webs is known.
  • a material carrying the web in its outer periphery permeable designed sieve drum is rotatably mounted.
  • the sieve drum is placed under induced draft via a fan assigned to the front side as a suction air generator.
  • the extracted air is heated in a part of the housing formed as an air treatment (ventilator space) and directed into the treatment space surrounding the sieve drum. Due to the negative pressure within the sieve drum, the heated air flows through the textile material web carried by the sieve drum.
  • this screen drum is assigned a screen cover covering the screen drum in the area of the loop.
  • This jam or screen blanket is designed shell-shaped, so surrounds the sieve drum so centric or the stowage ceiling consists of straight sheet metal sections. Regardless of the type of arrangement of the screen cover this is designed as a perforated plate. The degree of transmittance of the screen cover is smaller than that of the screen drum carrying the material web. This results in a
  • a screen drum device in which the screen cover surrounds the drum in the shape of a shell and the holes determining the air flow in the screen cover are adapted in arrangement and / or hole density to the throughflow changing in the circumferential direction of the drum.
  • DE 40 22 336 A1 and EP 0465 769 A1 each show a device for the flow-through treatment of web-like material in which a jam and a screen blanket, each having a perforation, are displaceable relative to each other and so the air flow over the drum width is adjustable , The device is used to adjust the flow to different widths of material webs. Accordingly, different perforations are provided for congestion and screen ceiling.
  • a dryer is known in which the drum carrying the material web is associated with a screen cover composed of straight sheets.
  • the invention is therefore based on a device for the continuous treatment of web-like, gas-permeable material, in particular for drying woven or nonwoven fabrics, having the features:
  • a sieve drum surrounding the screen drum in the area wrapped by the material web.
  • Object of the present invention is to improve a device of the generic type, especially in the direction of increasing performance at low air speeds.
  • the air permeability of the screen cover can be changed at least in a circumferential section of the screen drum.
  • the fact is utilized that the air throughput through the material is not constant over the wrapping path of the material web. In the front region of the loop, so after a short transport path is, for example. With wet material, the air permeability is still low, compared to the air permeability of the web towards the end of the transport route, so after a lot of moisture was expelled.
  • the air permeability of the screen cover can be changed at least in a circumferential section, that is to say a transport section of the material web, a very differentiated adaptation to the present treatment situation can be undertaken.
  • a very differentiated adaptation to the present treatment situation can be undertaken.
  • the permeability of the screen cover sections over the entire transport path of the web can be changed.
  • the screen cover is constructed in sections of perforated sheet metal elements.
  • At least one perforated plate element is interchangeable.
  • At least one perforated plate element is assigned a slider with windows for adjusting the permeability.
  • the slider is mounted parallel to the axial direction of the screen drum displaceable relative to the perforated plate element.
  • the invention is applicable to dryers in which the material web to be dried flows through hot air and thus expels the moisture in the material. Also, the invention is applicable to the heat setting serving facilities in which, for example, a nonwoven consisting of fusible fibers is treated with hot air flowing through and solidified. Especially with voluminous, loose nonwovens, a low throughflow rate is desirable because this does not adversely affect the structure of the material.
  • the permeability of the screen cover can be changed in sections over essentially the entire transport path of the track. This can be done by the perforated plates in the Siebse sections are interchangeable, and in the sections a sheet with provided Lo- chung, hole diameter, hole geometry is used.
  • the sheets are interchangeable insertable in slots and can preferably laterally, ie parallel to the drum axis in slots inserted and ejected.
  • the sieve cover has a fixed hole grid with openings of suitable diameter.
  • the slide plate has windows adapted to the perforated grid, which each release or close the second row of holes. This allows the air outlet in the section from the full opening to be reduced by 50%.
  • FIG. 1 shows a screen drum S with an air-permeable outer circumferential surface.
  • the screen drum S is rotatably mounted in a housing G and connected in a manner not shown with a vacuum generator.
  • the direction of rotation of the sieve drum S is indicated by the arrow.
  • the interior of the housing G forms a treatment space BH for a material web M to be dried.
  • a material web M for example a nonwoven web is guided.
  • the material web M is fed into the housing G via a roller W1 and the outer circumference of the screen drum S, and removed from the outer circumference 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.
  • Inside the sieve drum S is not wrapped in the material web.
  • gen region arranged an aperture B fixed to the frame, through which a sucking in this area is prevented.
  • a perforated screen cover SD is arranged above the region of the screen drum S which is looped around by the material web M.
  • the screen cover SD is mounted fixed to the frame, that is firmly connected to the housing G and consists of individual flat sections, which are each designed as a perforated plate.
  • the screen drum S is connected at one end to a suction fan and is thus subjected to negative pressure.
  • the fan is in a side adjoining the treatment room
  • the Siebtrommel S surrounding Siebdecke SD consists of individual perforated plate elements LE with holes L ( Figure 2, 3). Each perforated plate element LE is assigned a relative to this movable slide SB, which has adapted to the hole structure of the perforated plate element LE window F. In the example shown in FIGS.
  • the windows F of the slide SB have such a geometry and width that a complete row of holes in the perforated sheet element can be closed when the slide SB is moved (FIG. 2) or this row of holes can be released (FIG ).
  • the movements necessary for closing and opening the holes L in the perforated sheet metal element LE are indicated by the arrows in FIGS. 2 and 3.
  • the displacement of the slide SB about a row of holes causes the increase of the air flow rate by 100%, ie the air flow rate is doubled, starting from FIG. 2 (FIG. 3). If other geometries of perforations L in the perforated sheet metal element LE and on windows in the slide SB are selected, then further metering regions for the air passage can be realized.
  • the openings in the screen cover are completely closed by inserting a completely closed sheet metal.
  • the Siebbetweenabitesen SD guide elements are assigned, in which the provided slide SB can be used.
  • the slides SB can be sheets with different window geometries or completely closed sheets. It can be provided that the slides SB are slidably received parallel to the axial direction of the screen drum S. Preferably, a remote adjustment is then provided by which individual slide SB but also all slides SB can be adjusted in total.
  • the permeability of the Siebsupportabête SD on the transport path of the material web M is individually adjustable.

Abstract

The invention relates to a device for the throughflow treatment of web-shaped, gas-permeable material (M), in particular for drying woven or unwoven materials, having the following features: - a wire drum (S) which is mounted rotatably, is connected to a vacuum generator and has a permeably designed outer circumference, wherein the material web (M) to be treated runs around part of the outer circumference of the wire drum (S), - a treatment chamber (BH) which accommodates the wire drum (S) and is loaded with the gas to be treated, preferably heated air, - a wire cover (SD) within the treatment chamber (BH), which wire cover (SD) surrounds the wire drum (S) in the region which is wrapped around by the material web (M). According to the invention, the air permeability of the wire cover (SD) can be varied at least in a circumferential section of the wire drum (S).

Description

Vorrichtung zum durchströmenden Behandeln von bahnförmigem Material Die Erfindung betrifft eine Vorrichtung zum durchströmenden Behandeln, insbesondere zum Trocknen von bahnförmigem Material gemäß dem Oberbegriff von Anspruch 1.  The invention relates to a device for through-flow treatment, in particular for drying sheet-like material according to the preamble of claim 1.
Aus der DE 39 05 001 A1 ist eine Siebtrommelvorrichtung zum durch- strömenden Wärmebehandeln von gasdurchlässigen Materialbahnen bekannt. In einem Gehäuse ist eine die Materialbahn tragende, in ihrem Außenumfang durchlässig gestaltete Siebtrommel drehbar gelagert. Über einen stirnseitig zugeordneten Ventilator als Sauglufterzeuger wird die Siebtrommel unter Saugzug gesetzt. Die abgesaugte Luft wird in einem als Luftaufbereitung (Ventilatorraum) ausgebildeten Teil des Gehäuses erwärmt und in den die Siebtrommel umgebenden Behandlungsraum geleitet. Durch den Unterdruck innerhalb der Siebtrommel durchströmt die erwärmte Luft die von der Siebtrommel getragene textile Materialbahn. From DE 39 05 001 A1 a screen drum device for the continuous heat treatment of gas-permeable material webs is known. In a housing, a material carrying the web, in its outer periphery permeable designed sieve drum is rotatably mounted. The sieve drum is placed under induced draft via a fan assigned to the front side as a suction air generator. The extracted air is heated in a part of the housing formed as an air treatment (ventilator space) and directed into the treatment space surrounding the sieve drum. Due to the negative pressure within the sieve drum, the heated air flows through the textile material web carried by the sieve drum.
Um eine Vergleichmäßigung der Strömung im Bereich der von der Materialbahn umschlungenen Siebtrommel und eine zur durchströmenden Behandlung erforderliche Druckdifferenz zu erzeugen, ist dieser Siebtrommel im Bereich der Umschlingung eine die Siebtrommel abdeckende Staudecke, eine Siebdecke zugeordnet. Diese Stau- oder Siebdecke ist schalenförmig ausgeführt, umgibt die Siebtrommel also zentrisch oder die Staudecke besteht aus geraden Blechabschnitten. Unabhängig von der Art der Anordnung der Siebdecke ist diese als gelochtes Blech ausgeführt. Der Durchlässigkeitsgrad der Siebdecke ist kleiner als der der die Materialbahn tragenden Siebtrommel. Dadurch ergibt sich eineIn order to produce a homogenization of the flow in the region of the screen drum looped around by the material web and a pressure difference required for the throughflow, this screen drum is assigned a screen cover covering the screen drum in the area of the loop. This jam or screen blanket is designed shell-shaped, so surrounds the sieve drum so centric or the stowage ceiling consists of straight sheet metal sections. Regardless of the type of arrangement of the screen cover this is designed as a perforated plate. The degree of transmittance of the screen cover is smaller than that of the screen drum carrying the material web. This results in a
Druckdifferenz zwischen dem Behandlungsraum und der Siebtrommel. Aus der DE 199 19 757 A1 ist eine Siebtrommelvorrichtung bekannt, bei der die Siebdecke die Trommel schalenförmig umgibt und die den Luftdurchsatz bestimmenden Löcher in der Siebdecke in Anordnung und/oder Lochdichte an die sich in Umfangsrichtung der Trommel än- dernde Durchströmung angepasst sind. Pressure difference between the treatment room and the sieve drum. From DE 199 19 757 A1 a screen drum device is known in which the screen cover surrounds the drum in the shape of a shell and the holes determining the air flow in the screen cover are adapted in arrangement and / or hole density to the throughflow changing in the circumferential direction of the drum.
Bei dieser bekannten Anordnung können mehrere Siebdeckenbleche in Umfangsrichtung sich aneinander anschleißend vorgesehen sein, wobei so jedem Abschnitt ein bestimmtes Lochbild, eine bestimmte Lochdichte und/oder Lochdurchmesser zugeordnet ist. In this known arrangement a plurality of Siebdeckenbleche can be provided anschleißend in the circumferential direction to each other, so each section is assigned a specific hole pattern, a specific hole density and / or hole diameter.
Die DE 40 22 336 A1 und die EP 0465 769 A1 zeigen jeweils eine Vorrichtung zum durchströmenden Behandeln von bahnförmigen Gut, bei der eine Stau- und eine Siebdecke, jeweils eine Lochung aufweisend, relativ zueinander verschiebbar sind und so der Luftdurchsatz über die Trommelbreite einstellbar ist. Die Vorrichtung dient zum Anpassen der Durchströmung an unterschiedlich breite Materialbahnen. Entsprechend sind für Stau- und Siebdecke unterschiedliche Lochungen vorgesehen. Aus der DE 30 06 758 C2 ist ein Trockner bekannt, bei der der die Mate- rialbahn tragenden Trommel eine aus geraden Blechen zusammengesetzte Siebdecke zugeordnet ist. DE 40 22 336 A1 and EP 0465 769 A1 each show a device for the flow-through treatment of web-like material in which a jam and a screen blanket, each having a perforation, are displaceable relative to each other and so the air flow over the drum width is adjustable , The device is used to adjust the flow to different widths of material webs. Accordingly, different perforations are provided for congestion and screen ceiling. From DE 30 06 758 C2 a dryer is known in which the drum carrying the material web is associated with a screen cover composed of straight sheets.
Die Erfindung geht somit aus von einer Vorrichtung zum durchströmen- den Behandeln von bahnförmigem, gasdurchlässigem Material, insbesondere zum Trocknen von gewebten oder ungewebten Stoffen, mit den Merkmalen: The invention is therefore based on a device for the continuous treatment of web-like, gas-permeable material, in particular for drying woven or nonwoven fabrics, having the features:
- eine drehbar gelagerte und mit einem Unterdruckerzeuger verbundene Siebtrommel mit durchlässig gestaltetem Außenumfang, wobei die zu behandelnde Materialbahn um einen Teil des Außenumfanges der Siebtrommel läuft,  - A rotatably mounted and connected to a vacuum generator screen drum having a transmissively designed outer periphery, wherein the material web to be treated runs around a part of the outer circumference of the screen drum,
- ein die Siebtrommel aufnehmender Behandlungsraum, welcher mit dem zu behandelndem Gas, vorzugsweise aufgeheizter Luft beaufschlagt wird, - A receiving the sieve drum treatment space, which acts on the gas to be treated, preferably heated air becomes,
- innerhalb des Behandlungsraumes eine die Siebtrommel im von der Materialbahn umschlungenen Bereich umgebende Siebdecke. Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung der gattungsgemäßen Art, insbesondere in Richtung Leistungsteigerung bei geringen Luftgeschwindigkeiten, zu verbessern.  - Within the treatment room, a sieve drum surrounding the screen drum in the area wrapped by the material web. Object of the present invention is to improve a device of the generic type, especially in the direction of increasing performance at low air speeds.
Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Hauptanspruches. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den jeweiligen Unteransprüchen. This object is achieved by the characterizing features of the main claim. Advantageous developments of the invention will become apparent from the respective dependent claims.
Gemäß der Erfindung ist vorgesehen: According to the invention, it is provided:
zumindest in einem Umfangsabschnitt der Siebtrommel ist die Luftdurch- lässigkeit der Siebdecke veränderbar. Hierbei wird der Umstand ausgenutzt, dass der Luftdurchsatz durch das Material über den Umschlin- gungsweg der Materialbahn nicht konstant ist. Im vorderen Bereich der Umschlingung, also nach noch kurzem Transportweg ist bspw. bei feuchtem Material die Luftdurchlässigkeit noch gering, im Vergleich zu der Luftdurchlässigkeit der Bahn gegen Ende der Transportstrecke, also nachdem bereits eine Menge Feuchtigkeit ausgetrieben wurde. The air permeability of the screen cover can be changed at least in a circumferential section of the screen drum. In this case, the fact is utilized that the air throughput through the material is not constant over the wrapping path of the material web. In the front region of the loop, so after a short transport path is, for example. With wet material, the air permeability is still low, compared to the air permeability of the web towards the end of the transport route, so after a lot of moisture was expelled.
Dadurch, dass zumindest in einem Umfangsabschnitt, also einem Transportabschnitt der Materialbahn, die Luftdurchlässigkeit der Siebdecke veränderbar ist, kann eine sehr differenzierte Anpassung an die vorliegende Behandlungssituation vorgenommen werden. Insbesondere ist nach der Erfindung in Weiterbildung, wie nachstehend noch erläutert wird, vorgesehen, dass die Durchlässigkeit der Siebdecke abschnittsweise über den gesamten Transportweg der Bahn verändert werden kann. So kann der von vorne nach hinten zunehmenden Durchlässigkeit einer zu trocknenden Bahn mit einer angepassten und von vorne nach hinten abnehmenden Siebdeckendurchlässigkeit Rechnung getragen werden. Folgende Weiterbildungen sind vorgesehen: Due to the fact that the air permeability of the screen cover can be changed at least in a circumferential section, that is to say a transport section of the material web, a very differentiated adaptation to the present treatment situation can be undertaken. In particular, according to the invention in further development, as will be explained below, provided that the permeability of the screen cover sections over the entire transport path of the web can be changed. Thus, the permeability of a web to be dried, which increases from the front to the rear, can be taken into account with an adapted through-sieve permeability, which decreases from the front to the rear. The following training courses are planned:
- die Siebdecke ist abschnittsweise aus Lochblechelementen aufgebaut. - The screen cover is constructed in sections of perforated sheet metal elements.
- wenigstens ein Lochblechelement ist austauschbar. - At least one perforated plate element is interchangeable.
- wenigstens einem Lochblechelement ist ein Schieber mit Fenstern zum Einstellen der Durchlässigkeit zugeordnet. - At least one perforated plate element is assigned a slider with windows for adjusting the permeability.
- der Schieber ist parallel zur Achsrichtung der Siebtrommel verschiebbar gegenüber dem Lochblechelement gelagert. - The slider is mounted parallel to the axial direction of the screen drum displaceable relative to the perforated plate element.
- dem Schieber ist eine Fernverstellung zugeordnet. - The slide is assigned a remote adjustment.
- bei mehreren Schiebern sind diese durch eine Gesamtverstellung betätigbar. - With several sliders these are actuated by a total adjustment.
Die Erfindung ist anwendbar bei Trocknern, bei denen die zu trocknende Materialbahn mit heißer Luft durchströmt und so die Feuchtigkeit im Material ausgetrieben wird. Ebenfalls ist die Erfindung anwendbar bei der Thermofixierung dienenden Einrichtungen, bei denen beispielsweise ein aus schmelzbaren Fasern bestehendes Vlies mit heißer Luft durchströmend behandelt und so verfestigt wird. Gerade bei voluminösen, locke- ren Vliesen ist eine niedrige Durchströmungsgeschwindigkeit erwünscht, da so die Struktur des Materials nicht negativ beeinflusst wird. The invention is applicable to dryers in which the material web to be dried flows through hot air and thus expels the moisture in the material. Also, the invention is applicable to the heat setting serving facilities in which, for example, a nonwoven consisting of fusible fibers is treated with hot air flowing through and solidified. Especially with voluminous, loose nonwovens, a low throughflow rate is desirable because this does not adversely affect the structure of the material.
Folgende weiterführende Ausbildungen sind vorgesehen: die Durchlässigkeit der Siebdecke ist abschnittsweise über im Wesentlichen den gesamten Transportweg der Bahn veränderbar. Dies kann erfolgen, indem die gelochten Bleche in den Siebdeckenabschnitten austauschbar sind, und in den Abschnitten ein Blech mit vorgesehener Lo- chung, Lochdurchmesser, Lochgeometrie eingesetzt wird. Dazu sind die Bleche austauschbar in Einschübe einzusetzen und können vorzugsweise seitlich, also parallel zur Trommelachse in Einschübe ein- und ausgeschoben werden. The following further training is provided: the permeability of the screen cover can be changed in sections over essentially the entire transport path of the track. This can be done by the perforated plates in the Siebdeckense sections are interchangeable, and in the sections a sheet with provided Lo- chung, hole diameter, hole geometry is used. For this purpose, the sheets are interchangeable insertable in slots and can preferably laterally, ie parallel to the drum axis in slots inserted and ejected.
Alternativ hierzu ist es möglich, in einem, mehreren oder gar allen Abschnitten die Siebabdeckung als ein Lochblech mit einem dazu parallel angeordneten und gegenüber diesem verschiebbarem Schieberblech auszuführen. Vorzugsweise weist die Siebabdeckung ein festes Lochras- ter mit Öffnungen vorgesehenen Durchmessers auf. Das Schieberblech weist an das Lochraster angepasste Fenster auf, die jeweils die zweite Lochreihe freigeben bzw. verschließen. So lässt sich der Luftdurchlass im jeweiligen Abschnitt vom vollen Durchlass auf einen um 50% reduzierten Wert senken. Alternatively, it is possible to perform in one, several or even all sections of the screen cover as a perforated plate with a parallel thereto and slidable relative to this slide plate. Preferably, the sieve cover has a fixed hole grid with openings of suitable diameter. The slide plate has windows adapted to the perforated grid, which each release or close the second row of holes. This allows the air outlet in the section from the full opening to be reduced by 50%.
Des Weiteren erfolgt die Erläuterung eines Ausführungsbeispieles anhand der Zeichnung. Furthermore, the explanation of an embodiment with reference to the drawing.
Figur 1 zeigt eine Siebtrommel S mit einer luftdurchlässigen Außenum- fangsfläche. Die Siebtrommel S ist drehbar in einem Gehäuse G gelagert und in nicht dargestellter Weise mit einem Sauglufterzeuger verbunden. Die Drehrichtung der Siebtrommel S ist durch den Pfeil gekennzeichnet. Das Innere des Gehäuses G bildet einen Behandlungsraum BH für eine zu trocknende Materialbahn M. FIG. 1 shows a screen drum S with an air-permeable outer circumferential surface. The screen drum S is rotatably mounted in a housing G and connected in a manner not shown with a vacuum generator. The direction of rotation of the sieve drum S is indicated by the arrow. The interior of the housing G forms a treatment space BH for a material web M to be dried.
Um einen Teil der Außenumfangsfläche der Siebtrommel S ist eine Materialbahn M, beispielsweise eine Vliesstoffbahn geführt. Zur Erzielung einer möglicht großen Umschlingung der Siebtrommel S wird die Materialbahn M über eine Walze W1 in das Gehäuse G rein und dem Außenum- fang der Siebtrommel S zu- und über eine zweite Walze W2 vom Außenumfang abgenommen und aus dem Gehäuse G herausgeführt. Die Bewegungsrichtung der Materialbahn M ist mit den Pfeilen angegeben. Im Inneren der Siebtrommel S ist im nicht von der Materialbahn umschlun- genen Bereich eine Blende B gestellfest angeordnet, durch welche ein Durchsaugen in diesem Bereich unterbunden wird. Innerhalb des Behandlungsraumes BH ist oberhalb des von der Materialbahn M umschlungenen Bereiches der Siebtrommel S eine gelochte Siebdecke SD angeordnet. Die Siebdecke SD ist gestellfest montiert, d.h. fest mit dem Gehäuse G verbunden und besteht aus einzelnen flächigen Abschnitten, die jeweils als ein Lochblech ausgeführt sind. Around a part of the outer peripheral surface of the screen drum S, a material web M, for example a nonwoven web is guided. To achieve the largest possible looping of the screen 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, and removed from the outer circumference 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. Inside the sieve drum S is not wrapped in the material web. gen region arranged an aperture B fixed to the frame, through which a sucking in this area is prevented. Within the treatment space BH, a perforated screen cover SD is arranged above the region of the screen drum S which is looped around by the material web M. The screen cover SD is mounted fixed to the frame, that is firmly connected to the housing G and consists of individual flat sections, which are each designed as a perforated plate.
Die Siebtrommel S ist an einer Stirnseite mit einem Saugventilator ver- bunden und wird so mit Unterdruck beaufschlagt. Der Ventilator ist in einem seitlich neben dem Behandlungsraum anschließenden The screen drum S is connected at one end to a suction fan and is thus subjected to negative pressure. The fan is in a side adjoining the treatment room
Ventilatorraum untergebracht. In diesem Raum sind auch Heiz- und/oder Wärmetauscheinrichtungen untergebracht, durch welche die aus der Siebtrommel S abgesaugte Luft aufgeheizt und wieder in den Innenraum BH zurückgeleitet wird. Diese wird dann durch den Unterdruck innerhalb der Siebtrommel S durch die Materialbahn gesaugt. Die Siebdecke SD oberhalb der Siebtrommel S erzeugt durch ihre Durchlässigkeit die nötige Druckdifferenz zur durchströmenden Behandlung der Materialbahn M. Die die Siebtrommel S umgebende Siebdecke SD besteht aus einzelnen Lochblechelementen LE mit Löchern L (Figur 2, 3). Jedem Lochblechelement LE ist ein relativ zu diesem bewegbarer Schieber SB zugeordnet, der an die Lochstruktur des Lochblechelementes LE angepasste Fenster F aufweist. In dem in Figur 2 und 3 gezeigten Beispiel weisen die Fenster F des Schiebers SB eine derartige Geometrie und Breite auf, so dass beim Verschieben des Schiebers SB eine komplette Lochreihe im Lochblechelement geschlossen (Figur 2) bzw. diese Lochreihe freigegeben werden kann (Figur 3). Die zum Schließen und Öffnen der Löcher L im Lochblechelement LE nötigen Bewegungen sind durch die Pfeile in Figur 2 und 3 angedeutet. Die Verschiebung des Schiebers SB um eine Lochreihe bewirkt die Erhöhung des Luftdurchsatzes um 100%, d.h. der Luftdurchsatz wird, ausgehend von Figur 2 verdoppelt (Figur 3). Werden andere Geometrien von Lochungen L im Lochblechelement LE sowie an Fenstern im Schieber SB gewählt, so lassen sich weitere Dosierbereiche für den Luftdurchlass realisieren. Letztlich kann auch vorgesehen sein, dass in bestimmten Abschnitten die Öffnungen in der Siebdecke durch Einsetzen eines vollständig geschlossenen Bleches ganz geschlossen werden. Fan room housed. In this room also heating and / or heat exchange devices are housed, through which the air sucked out of the sieve drum S heated and returned to the interior BH. This is then sucked through the negative pressure within the screen drum S through the web. The screen cover SD above the screen drum S produced by their permeability, the necessary pressure difference to the flowing through the material web M. The Siebtrommel S surrounding Siebdecke SD consists of individual perforated plate elements LE with holes L (Figure 2, 3). Each perforated plate element LE is assigned a relative to this movable slide SB, which has adapted to the hole structure of the perforated plate element LE window F. In the example shown in FIGS. 2 and 3, the windows F of the slide SB have such a geometry and width that a complete row of holes in the perforated sheet element can be closed when the slide SB is moved (FIG. 2) or this row of holes can be released (FIG ). The movements necessary for closing and opening the holes L in the perforated sheet metal element LE are indicated by the arrows in FIGS. 2 and 3. The displacement of the slide SB about a row of holes causes the increase of the air flow rate by 100%, ie the air flow rate is doubled, starting from FIG. 2 (FIG. 3). If other geometries of perforations L in the perforated sheet metal element LE and on windows in the slide SB are selected, then further metering regions for the air passage can be realized. Finally, it can also be provided that in certain sections, the openings in the screen cover are completely closed by inserting a completely closed sheet metal.
Den Siebdeckenabschnitten SD sind Führungselemente zugeordnet, in die die vorgesehenen Schieber SB eingesetzt werden können. Wie er- wähnt, kann es sich bei den Schiebern SB um Bleche mit verschiedenen Fenstergeometrien oder vollständig geschlossenen Bleche handeln. Es kann vorgesehen sein, dass die Schieber SB parallel zur Achsrichtung der Siebtrommel S verschiebbar aufgenommen sind. Bevorzugt ist dann eine Fernverstellung vorgesehen, durch welche einzelne Schieber SB aber auch sämtliche Schieber SB insgesamt verstellt werden können. Dadurch ist die Durchlässigkeit der Siebdeckenabschnitte SD über den Transportweg der Materialbahn M individuell einstellbar. The Siebdeckenabschnitten SD guide elements are assigned, in which the provided slide SB can be used. As mentioned, the slides SB can be sheets with different window geometries or completely closed sheets. It can be provided that the slides SB are slidably received parallel to the axial direction of the screen drum S. Preferably, a remote adjustment is then provided by which individual slide SB but also all slides SB can be adjusted in total. As a result, the permeability of the Siebdeckenabschnitte SD on the transport path of the material web M is individually adjustable.
Bezugszeichenliste: LIST OF REFERENCE NUMBERS
S Siebtrommel S sieve drum
M Materialbahn  M material web
W1 , W2 Walze  W1, W2 roller
G Gehäuse  G housing
BH Behandlungsraum  BH treatment room
SD Siebdecke, SiebdeckenabschnittSD screen cover, screen cover section
L Loch, Lochung L hole, perforation
LE Lochblechelement  LE perforated sheet metal element
SB Schieber, Schieberblech  SB slide, slide plate
F Fenster (Schieberblech)  F window (slide plate)

Claims

Ansprüche claims
1. Vorrichtung zum durchströmenden Behandeln von bahnförmigem, gasdurchlässigem Material, insbesondere zum Trocknen von gewebten oder ungewebten Stoffen, mit den Merkmalen: 1. An apparatus for the flow-through treatment of web-like, gas-permeable material, in particular for drying woven or nonwoven fabrics, having the features:
- eine drehbar gelagerte und mit einem Unterdruckerzeuger verbundene Siebtrommel mit durchlässig gestaltetem Außenumfang, wobei die zu behandelnde Materialbahn um einen Teil des Außenumfanges der Siebtrommel läuft,  - A rotatably mounted and connected to a vacuum generator screen drum having a transmissively designed outer periphery, wherein the material web to be treated runs around a part of the outer circumference of the screen drum,
- ein die Siebtrommel aufnehmender Behandlungsraum, welcher mit dem zu behandelndem Gas, vorzugsweise aufgeheizter Luft beaufschlagt wird,  a receiving chamber receiving the screen drum, which is supplied with the gas to be treated, preferably heated air,
- innerhalb des Behandlungsraumes eine die Siebtrommel im von der Materialbahn umschlungenen Bereich umgebende Siebdecke, within the treatment space, a screen blanket surrounding the screen drum in the region surrounded by the web of material,
gekennzeichnet durch, marked by,
zumindest in einem Umfangsabschnitt der Siebtrommel (S) ist die Luftdurchlässigkeit der Siebdecke (SD) veränderbar. at least in a peripheral portion of the screen drum (S), the air permeability of the screen cover (SD) is changeable.
2. Vorrichtung nach Anspruch 1 , 2. Apparatus according to claim 1,
gekennzeichnet durch, marked by,
die Siebdecke (SD) ist abschnittsweise aus Lochblechelementen (LE) aufgebaut. the screen cover (SD) is constructed in sections from perforated sheet metal elements (LE).
3. Vorrichtung nach Anspruch 2, 3. Apparatus according to claim 2,
gekennzeichnet durch, marked by,
wenigstens ein Lochblechelement (LE) ist austauschbar. at least one perforated plate element (LE) is exchangeable.
4. Vorrichtung nach Anspruch , 2 oder 3, 4. Apparatus according to claim 2 or 3,
gekennzeichnet durch, marked by,
wenigstens einem Lochblechelement (LE) ist ein Schieber (SB) mit Fenstern (F) zum Einstellen der Durchlässigkeit zugeordnet. at least one perforated plate element (LE) is associated with a slide (SB) with windows (F) for adjusting the permeability.
5. Vorrichtung nach Anspruch 4, 5. Apparatus according to claim 4,
gekennzeichnet durch, marked by,
der Schieber (SB) ist parallel zur Achsrichtung der Siebtrommel (S) ver- schiebbar gegenüber dem Lochblechelement (LE) gelagert. The slide (SB) is mounted parallel to the axial direction of the sieve drum (S) displaceable relative to the perforated plate element (LE).
6. Vorrichtung nach Anspruch 4, 6. Apparatus according to claim 4,
gekennzeichnet durch, marked by,
dem Schieber (SB) ist eine Fernverstellung zugeordnet. the slide (SB) is assigned a remote adjustment.
7. Vorrichtung nach Anspruch 4, 7. Apparatus according to claim 4,
gekennzeichnet durch, marked by,
bei mehreren Schiebern (SB) sind diese durch eine Gesamtverstellung betätigbar. with several slides (SB) they can be actuated by a total adjustment.
EP11779120.2A 2010-10-29 2011-10-19 Device for the throughflow treatment of web-shaped material Not-in-force EP2633251B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010050044A DE102010050044A1 (en) 2010-10-29 2010-10-29 Device for the flow-through treatment of sheet material
PCT/EP2011/068245 WO2012055732A1 (en) 2010-10-29 2011-10-19 Device for the throughflow treatment of web-shaped material

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EP2633251A1 true EP2633251A1 (en) 2013-09-04
EP2633251B1 EP2633251B1 (en) 2016-03-02

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DE (1) DE102010050044A1 (en)
WO (1) WO2012055732A1 (en)

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Also Published As

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EP2633251B1 (en) 2016-03-02
DE102010050044A1 (en) 2012-05-03

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