EP2930451A1 - Dryer for a textile web - Google Patents
Dryer for a textile web Download PDFInfo
- Publication number
- EP2930451A1 EP2930451A1 EP15000657.5A EP15000657A EP2930451A1 EP 2930451 A1 EP2930451 A1 EP 2930451A1 EP 15000657 A EP15000657 A EP 15000657A EP 2930451 A1 EP2930451 A1 EP 2930451A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screen
- bore
- screen cover
- dryer according
- radius
- 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.)
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Classifications
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- 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 dryer for a textile material web according to the preamble of claim 1.
- a screen drum apparatus for passing through heat-treating gas-permeable material webs.
- 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 cover can be designed shell-shaped and surrounds the screen drum centric.
- the stowage blanket may consist of straight sheet metal sections. Regardless of the type of arrangement of the screen cover this is designed as a perforated plate.
- the Transmittance of the screen cover is smaller than the transmittance of the material carrying the web drum. This results in a pressure difference between the treatment chamber and the sieve drum.
- the object of the present invention is to improve a dryer for a textile material web and to reduce it in the noise emission.
- the dryer for a textile web comprises a treatment chamber with at least one arranged in the treatment chamber screen drum, which is at least partially surrounded by wire cloths, wherein the web at least partially wraps around the screen drum, while flowing through heated air, the is discharged through an interior of the screen drum.
- the sieve covers have a multiplicity of bores, each borehole having an increasingly tapering conical part in the inlet region of the air flow in the treatment space, which merges into a cylindrical part and ends in a radius, the size of the radius being 10% to 20% of the thickness of the screen cover.
- the height of the cylindrical portion of the bore is 20% to 40% of the thickness of the screen blanket.
- a further improvement is achieved in that the height of the conical portion of the bore is 40% to 60% of the thickness of the screen blanket.
- the screen cover has a thickness of only 1 to 4 mm, preferably 2 mm, the dryer can be built much easier and cheaper.
- the required strength of the screen cover is achieved, which thus does not vibrate at the existing flow rates.
- the diameter of the cylindrical part of the bore is 3 mm to 7 mm, preferably 5 mm.
- the diameter of the narrowest cross-sectional part of the bore is thus significantly larger than the thickness of the screen cover.
- a further improvement is achieved in that the transitions of the conical part to the cylindrical part, further to the radius are edge-free.
- the holes can be made very inexpensively in the screen ceilings by means of a stamp, whereby the bore geometry only needs a little rework.
- the screen cover is treated with the holes by means of glass bead blasting, whereby the surface is smoothed and all edges are largely removed.
- FIG. 1 shows a dryer 1 according to the prior art, comprising a screen drum 4 with an air-permeable outer peripheral surface.
- the screen drum 4 is rotatably mounted in a housing 2 and connected in a manner not shown with a vacuum generator.
- the direction of rotation of the screening drum 4 is indicated by the arrow.
- the interior of the housing 2 forms a treatment space 3 for a material web 6 to be dried.
- a material web 6, for example a nonwoven web is guided.
- the material web 6 is fed via a roller 9 into the housing 2 purely, the outer circumference of the screen drum 4, and removed via a second roller 10 from the outer periphery and led out of the housing 2.
- the direction of movement of the material web 6 is indicated by the arrows.
- an aperture 8 is arranged fixed to the frame in the region not looped by the material web 6, by means of which a suction in this area is prevented.
- a perforated screen cover 5 is arranged above the area of the screen drum 4 looped around by the material web 6.
- the screen cover 5 is mounted fixed to the frame, that is firmly connected to the housing 2 and may consist of individual flat sections, which are each designed as a perforated plate.
- the screen drum 4 is connected at one end face with a suction fan and is thus subjected to negative pressure.
- the fan is housed in a laterally adjacent to the treatment room 3 fan room. Heating and / or heat exchange devices are also accommodated in this space, through which the air 15 sucked out of the sieve drum 4 is heated up and returned to the treatment space 3. This is then sucked by the negative pressure within the screen drum 4 through the web 6.
- the screen cover 5 above the screen drum 4 generates by its permeability the necessary pressure difference to the flowing through the material web 6. By means of a slide, not shown, a part of the openings or holes in the screen cover 5 can be closed.
- FIG. 2 is not drawn to scale for the sake of clarity.
- the dryer 1 has a single screen cover 5 or many individual screen covers 5 with holes 11, which consist of a cylindrical 13 and a conical part 12.
- the air 15 flows at a rate of preferably 10 m / s to 40 m / s from the treatment chamber 3 only in the conical portion 12 of the bore 11, thereby compressing and then flows through the cylindrical portion 13, at the same time increases the flow rate ,
- the conical part 12 the formation of boundary layers is prevented, in which the flow velocity from the center of the bore 11 parabolic decreases and near the wall is almost zero. This prevents water residues that can form in the near-wall zones.
- the transition from the conical part 12 to the cylindrical part 13 of the bore 11 is preferably carried out without a sharp edge.
- the cylindrical part 13 of the bore 11 in the transition to the surface of the screen cover 5 has a radius R, which is preferably 10-20% of the thickness s of the screen cover 5.
- the radius R passes tangentially into the surface of the screen cover 5 and into the cylindrical part 13 of the bore 11.
- the cylindrical part 13 of the bore 11 may be a height c of 20% to 40% of the thickness s of the screen cover 5.
- the diameter d of the cylindrical portion 13 of the bore here forms the smallest cross section of the bore 11, which should thus be close to the flow outlet to compress the flow velocity over the conical portion 12 over the longest possible way.
- the conical part 12 of the bore 11 preferably has a height h of 40% to 60% of the thickness s of the screen cover 5, whereby the flow is slowly compressed, so that the flow rate increases.
- This also increases the sonic load, which in turn can be reduced by an inventive change in the entire bore geometry, including by the inlet radius R.
- the reduction of the sound is enhanced by the proportions of the height c of the cylindrical part 13 of the bore 11 to the height h of the conical part 12 of the bore.
- the diameter d may be between 3 and 7 mm, preferably 5 mm, for a thickness s of the screen cover 5 of 2 mm.
- the diameter d is so much larger in terms of its dimensions, as the thickness s of the screen cover 5 of 1 to 4 mm, preferably 2 mm.
- the wall surface of the conical part 12 of the bore 11 can be arranged at an angle of 7 - 17 °, preferably at an angle of 12 °.
- the advantage of the invention lies in the possible use of thinner sheets for the wire cloths, which makes the entire dryer easier and cheaper.
- a corresponding surface treatment of the screen covers 5 on the inlet side of the air 15 in the treatment chamber 3 by means of glass bead blasting can further reduce the sound in which all sharp edges are smoothed.
- the holes 11 no longer need to be flowed perpendicular to achieve a low noise emission.
- the production of the bore 11 can be done by a stamp, by drilling, milling, or other comparable manufacturing processes.
- a particular bore geometry may result which, in the region of the radius R, results in a deformation zone of height y due to the plastic deformation of the material due to the pressure of the punch.
- the height c of the cylindrical part 13 of the bore eleventh may be found as a cutting zone of the punch and the height h of the conical portion 12 of the bore as an outbreak zone.
- the desired geometrical dimensions can not be exactly maintained, so that, if necessary, refinishing is required in order to achieve a reproducible quality and noise level.
- the radius R must pass without edges tangentially from the cylindrical part 13 of the bore in the surface of the screen cover 5.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Paper (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Die Erfindung betrifft einen Trockner für eine textile Warenbahn, umfassend einen Behandlungsraum (3), mit mindestens einer im Behandlungsraum (3) angeordneten Siebtrommel (4), die zumindest teilweise von Siebdecken (5) umgeben ist, wobei die Warenbahn (6) zumindest teilweise die Siebtrommel (4) umschlingt, und dabei von erwärmter Luft (15) durchströmt wird, die über einen Innenraum der Siebtrommel (4) abgeführt wird. Die Erfindung ist dadurch gekennzeichnet, dass die Siebdecken (5) eine Vielzahl von Bohrungen (11) aufweisen, wobei jede Bohrung (11) im Eintrittsbereich der Luftströmung im Behandlungsraum (3) einen zunehmend sich verjüngenden konischen Teil (12) aufweist, der in einen zylindrischen Teil (13) übergeht und in einen Radius (R) ausläuft, wobei die Größe des Radius (R) 10% bis 20% der Dicke (s) der Siebdecke (5) beträgt.The invention relates to a dryer for a textile material web, comprising a treatment space (3), with at least one screen drum (4) arranged in the treatment space (3), which is at least partially surrounded by screen covers (5), the web (6) at least partially the sieve drum (4) wraps around and through which heated air (15) flows, which is discharged via an interior of the sieve drum (4). The invention is characterized in that the screen covers (5) have a plurality of bores (11), each bore (11) in the inlet region of the air flow in the treatment chamber (3) having an increasingly tapered conical part (12) in a cylindrical portion (13) merges and terminates in a radius (R), wherein the size of the radius (R) is 10% to 20% of the thickness (s) of the screen cover (5).
Description
Die Erfindung betrifft einen Trockner für eine textile Warenbahn gemäß dem Oberbegriff von Anspruch 1.The invention relates to a dryer for a textile material web according to the preamble of
Aus der
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 kann schalenförmig ausgeführt sein und umgibt die Siebtrommel dabei zentrisch. Alternativ kann die Staudecke auch aus geraden Blechabschnitten bestehen. Unabhängig von der Art der Anordnung der Siebdecke ist diese als gelochtes Blech ausgeführt. Der Durchlässigkeitsgrad der Siebdecke ist kleiner als der Durchlässigkeitsgrad der die Materialbahn tragenden Siebtrommel. Dadurch ergibt sich eine Druckdifferenz zwischen dem Behandlungsraum und der Siebtrommel.In 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 cover can be designed shell-shaped and surrounds the screen drum centric. Alternatively, the stowage blanket may consist of straight sheet metal sections. Regardless of the type of arrangement of the screen cover this is designed as a perforated plate. Of the Transmittance of the screen cover is smaller than the transmittance of the material carrying the web drum. This results in a pressure difference between the treatment chamber and the sieve drum.
Aufgrund der unterschiedlichen Luftströmungen im Trockner durchströmt die Luft fast nie senkrecht die Bohrungen der Stau- oder Siebdecke. Dadurch entsteht eine Schallemission, die in der Lautstärke und Frequenz schwankt und unerwünscht ist.Due to the different air flows in the dryer, the air almost never flows vertically through the holes in the accumulation or screen ceiling. This creates a sound emission that varies in volume and frequency and is undesirable.
Aufgabe der vorliegenden Erfindung ist es, einen Trockner für eine textile Warenbahn zu verbessern und in der Schallemission zu verringern.The object of the present invention is to improve a dryer for a textile material web and to reduce it in the noise emission.
Die Erfindung löst die gestellte Aufgabe durch die Lehre nach Anspruch 1; weitere vorteilhafte Ausgestaltungsmerkmale der Erfindung sind durch die Unteransprüche gekennzeichnet.The invention solves the problem by the teaching of
Gemäß der technischen Lehre nach Anspruch 1 umfasst der Trockner für eine textile Warenbahn einen Behandlungsraum mit mindestens einer im Behandlungsraum angeordneten Siebtrommel, die zumindest teilweise von Siebdecken umgeben ist, wobei die Warenbahn zumindest teilweise die Siebtrommel umschlingt, und dabei von erwärmter Luft durchströmt wird, die über einen Innenraum der Siebtrommel abgeführt wird.According to the technical teaching according to
Erfindungsgemäß ist vorgesehen, dass die Siebdecken eine Vielzahl von Bohrungen aufweisen, wobei jede Bohrung im Eintrittsbereich der Luftströmung im Behandlungsraum einen zunehmend sich verjüngenden konischen Teil aufweist, der in einen zylindrischen Teil übergeht und in einen Radius ausläuft, wobei die Größe des Radius 10% bis 20% der Dicke der Siebdecke beträgt.According to the invention, the sieve covers have a multiplicity of bores, each borehole having an increasingly tapering conical part in the inlet region of the air flow in the treatment space, which merges into a cylindrical part and ends in a radius, the size of the radius being 10% to 20% of the thickness of the screen cover.
Mit den Merkmalen der Erfindung ist es möglich, die Schallemission des Trockners zu verringern, da sich beim Austritt aus dem zylindrischen Bereich der Bohrung die Strömung entspannt und ein langsamer Druckausgleich mit einer langsamen Reduzierung der Strömungsgeschwindigkeit erreicht wird.With the features of the invention, it is possible to reduce the noise emission of the dryer, since at the exit from the cylindrical Area of the bore, the flow relaxes and a slow pressure equalization with a slow reduction of the flow velocity is achieved.
Insbesondere dadurch, dass der Radius tangential von dem zylindrischen Teil der Bohrung in die Oberfläche der Siebdecke übergeht, und damit Kanten und scharfe Übergänge vermieden werden, wird eine weitere Reduzierung der Schallemission erreicht.In particular, the fact that the radius merges tangentially from the cylindrical part of the bore into the surface of the screen cover, and thus edges and sharp transitions are avoided, a further reduction of the noise emission is achieved.
In bevorzugter Ausführungsform beträgt die Höhe des zylindrischen Teils der Bohrung 20% bis 40% der Dicke der Siebdecke. Eine weitere Verbesserung wird dadurch erreicht, in dem die Höhe des konischen Teils der Bohrung 40% bis 60% der Dicke der Siebdecke beträgt. Insbesondere durch das Längen- bzw. Höhenverhältnis vom zylindrischen Teil zum konischen Teil der Bohrung kann eine langsame Verdichtung der Strömung hin zum Austritt aus der Siebdecke erreicht werden, wodurch sich der Geräuschpegel des Trockners reduziert.In a preferred embodiment, the height of the cylindrical portion of the bore is 20% to 40% of the thickness of the screen blanket. A further improvement is achieved in that the height of the conical portion of the bore is 40% to 60% of the thickness of the screen blanket. In particular, by the length or height ratio of the cylindrical part to the conical part of the bore, a slow compression of the flow towards the exit from the screen cover can be achieved, whereby the noise level of the dryer is reduced.
Dadurch, dass die Siebdecke eine Dicke von nur noch 1 bis 4 mm aufweist, vorzugsweise 2 mm, kann der Trockner deutlich leichter und preiswerter gebaut werden.The fact that the screen cover has a thickness of only 1 to 4 mm, preferably 2 mm, the dryer can be built much easier and cheaper.
Durch den Öffnungsgrad der Siebdecke von 2% bis 10%, vorzugsweise 5%, wird die erforderliche Festigkeit der Siebdecke erreicht, die damit bei den vorhandenen Strömungsgeschwindigkeiten nicht vibriert.Due to the degree of opening of the screen cover of 2% to 10%, preferably 5%, the required strength of the screen cover is achieved, which thus does not vibrate at the existing flow rates.
In einer weiteren bevorzugten Ausführungsform der Erfindung beträgt der Durchmesser des zylindrischen Teils der Bohrung 3 mm bis 7 mm, vorzugsweise 5 mm. Der Durchmesser des engsten Querschnittsteiles der Bohrung ist damit deutlich größer, als die Dicke der Siebdecke.In a further preferred embodiment of the invention, the diameter of the cylindrical part of the bore is 3 mm to 7 mm, preferably 5 mm. The diameter of the narrowest cross-sectional part of the bore is thus significantly larger than the thickness of the screen cover.
Eine weitere Verbesserung wird dadurch erreicht, in dem die Übergänge des konischen Teils zum zylindrischen Teil, weiter zum Radius kantenfrei sind.A further improvement is achieved in that the transitions of the conical part to the cylindrical part, further to the radius are edge-free.
Die Bohrungen lassen sich in den Siebdecken mittels eines Stempels sehr preiswert herstellen, wodurch die Bohrungsgeometrie nur noch einer geringen Nacharbeit bedarf.The holes can be made very inexpensively in the screen ceilings by means of a stamp, whereby the bore geometry only needs a little rework.
Vorzugsweise wird die Siebdecke mit den Bohrungen mittels Glasperlenstrahlen behandelt, wodurch die Oberfläche geglättet und alle Kanten weitestgehend entfernt werden.Preferably, the screen cover is treated with the holes by means of glass bead blasting, whereby the surface is smoothed and all edges are largely removed.
Die Erfindung wird nachfolgend anhand eines möglichen schematisch dargestellten Ausführungsbeispieles näher erläutert. Es zeigt:
- Figur 1:
- eine schematische Seitenansicht auf einen Trockner nach dem Stand der Technik;
- Figur 2:
- eine schematische Schnittdarstellung durch eine Siebdecke mit der erfindungsgemäßen Bohrung.
- FIG. 1:
- a schematic side view of a dryer according to the prior art;
- FIG. 2:
- a schematic sectional view through a screen cover with the bore according to the invention.
Um einen Teil der Außenumfangsfläche der Siebtrommel 4 ist eine Materialbahn 6, beispielsweise eine Vliesstoffbahn geführt. Zur Erzielung einer möglichst großen Umschlingung der Siebtrommel 4 wird die Materialbahn 6 über eine Walze 9 in das Gehäuse 2 rein, dem Außenumfang der Siebtrommel 4 zugeführt, und über eine zweite Walze 10 vom Außenumfang abgenommen und aus dem Gehäuse 2 herausgeführt. Die Bewegungsrichtung der Materialbahn 6 ist mit den Pfeilen angegeben. Im Inneren der Siebtrommel 4 ist im nicht von der Materialbahn 6 umschlungenen Bereich eine Blende 8 gestellfest angeordnet, durch welche ein Durchsaugen in diesem Bereich unterbunden wird. Innerhalb des Behandlungsraumes 3 ist oberhalb des von der Materialbahn 6 umschlungenen Bereiches der Siebtrommel 4 eine gelochte Siebdecke 5 angeordnet. Die Siebdecke 5 ist gestellfest montiert, d.h. fest mit dem Gehäuse 2 verbunden und kann aus einzelnen flächigen Abschnitten bestehen, die jeweils als ein Lochblech ausgeführt sind.Around a part of the outer circumferential surface of the
Die Siebtrommel 4 ist an einer Stirnseite mit einem Saugventilator verbunden und wird so mit Unterdruck beaufschlagt. Der Ventilator ist in einem seitlich neben dem Behandlungsraum 3 anschließenden Ventilatorraum untergebracht. In diesem Raum sind auch Heiz- und/oder Wärmetauscheinrichtungen untergebracht, durch welche die aus der Siebtrommel 4 abgesaugte Luft 15 aufgeheizt und wieder in den Behandlungsraum 3 zurückgeleitet wird. Diese wird dann durch den Unterdruck innerhalb der Siebtrommel 4 durch die Materialbahn 6 gesaugt. Die Siebdecke 5 oberhalb der Siebtrommel 4 erzeugt durch ihre Durchlässigkeit die nötige Druckdifferenz zur durchströmenden Behandlung der Materialbahn 6. Mittels eines nicht dargestellten Schiebers kann ein Teil der Öffnungen bzw. Bohrungen in der Siebdecke 5 verschlossen werden.The
Der erfindungsgemäße Trockner nach
Beim Austritt aus dem zylindrischen Teil 13 der Bohrung entspannt sich die Strömung, da der Druckausgleich langsam erreicht wird. Hierzu weist der zylindrische Teil 13 der Bohrung 11 im Übergang zur Oberfläche der Siebdecke 5 einen Radius R auf, der vorzugsweise 10 - 20 % der Dicke s der Siebdecke 5 beträgt. Der Radius R geht dabei tangential in die Oberfläche der Siebdecke 5 und in den zylindrischen Teil 13 der Bohrung 11 über.When leaving the
Der zylindrische Teil 13 der Bohrung 11 kann eine Höhe c von 20 % bis 40 % der Dicke s der Siebdecke 5 betragen. Durch den Durchmesser d des zylindrischen Teils 13 der Bohrung bildet sich hier der kleinste Querschnitt der Bohrung 11, die sich damit nahe am Strömungsaustritt befinden soll, um die Strömungsgeschwindigkeit über den konischen Teil 12 über einen möglichst langen Weg zu verdichten.The
Der konische Teil 12 der Bohrung 11 weist bevorzugt eine Höhe h von 40 % bis 60 % der Dicke s der Siebdecke 5 auf, wodurch die Strömung langsam verdichtet wird, so dass sich die Strömungsgeschwindigkeit erhöht.The
Beim Stand der Technik wird ein viel dickeres Blech für die Siebdecke 5 verwendet, was eine höhere Stabilität aufweist. Bei einem Anteil von 20 % der Fläche der Bohrung 11 mit dem Durchmesser D von der Oberfläche der Siebdecke 5 (= 20 % Öffnung) ergibt sich eine geringe Strömungsgeschwindigkeit. Bei der Erfindung dagegen kann ein viel dünneres Blech für die Siebdecke 5 von beispielsweise 1 bis 4 mm, vorzugsweise 2 mm, verwendet werden, was auch eine geringere Festigkeit aufweist. Daher kann der Anteil der Fläche der Bohrung 11 mit dem Durchmesser D von der Oberfläche der Siebdecke 5 nicht bei 20 % gehalten werden, sondern muss deutlich verringert werden, um die Festigkeit der Siebdecke 5 nicht weiter zu schwächen. Erfindungsgemäß beträgt die Fläche der Bohrung 11 mit dem Durchmesser D an der Oberfläche der Siebdecke 5 zwischen 2 % bis 10 %, bevorzugt 5 % (= 5 % Öffnung), wodurch die Strömungsgeschwindigkeit im Vergleich zum Stand der Technik um ein Vielfaches steigt. Damit steigt auch die Schallbelastung, die wiederum durch eine erfindungsgemäße Änderung der gesamten Bohrungsgeometrie, u.a. durch den Eintrittsradius R reduziert werden kann. Vorteilhafterweise wird die Reduzierung des Schalls durch die Proportionen der Höhe c des zylindrischen Teils 13 der Bohrung 11 zur Höhe h des konischen Teils 12 der Bohrung verstärkt.In the prior art, a much thicker sheet is used for the
Der Durchmesser d kann bei einer Dicke s der Siebdecke 5 von 2 mm zwischen 3 und 7 mm betragen, vorzugsweise 5 mm. Der Durchmesser d ist hinsichtlich seiner Abmessungen damit deutlich größer, als die Dicke s der Siebdecke 5 von 1 bis 4 mm, vorzugsweise 2 mm.The diameter d may be between 3 and 7 mm, preferably 5 mm, for a thickness s of the
Die Wandfläche des konischen Teils 12 der Bohrung 11 kann in einem Winkel von 7 - 17°, vorzugsweise in einem Winkel von 12° angeordnet sein.The wall surface of the
Der Vorteil der Erfindung liegt in der möglichen Verwendung von dünneren Blechen für die Siebdecken, was den gesamten Trockner leichter und preiswerter macht. Eine entsprechende Oberflächenbehandlung der Siebdecken 5 an der Eintrittsseite der Luft 15 im Behandlungsraum 3 mittels Glasperlenstrahlen kann den Schall weiter reduzieren, in dem sämtliche scharfen Kanten geglättet werden. Im Gegensatz zum Stand der Technik brauchen die Bohrungen 11 nicht mehr senkrecht angeströmt werden, um eine geringe Schallemission zu erreichen.The advantage of the invention lies in the possible use of thinner sheets for the wire cloths, which makes the entire dryer easier and cheaper. A corresponding surface treatment of the screen covers 5 on the inlet side of the
Die Herstellung der Bohrung 11 kann durch einen Stempel, durch Bohren, Fräsen, oder andere vergleichbare Fertigungsverfahren erfolgen. Bei der Herstellung der Bohrung 11 mit einem Stempel, was ein kostengünstiges Verfahren darstellt, kann sich eine spezielle Bohrungsgeometrie ergeben, die im Bereich des Radius R eine Deformationszone mit der Höhe y durch die plastische Verformung des Materials aufgrund des Druckes des Stempels ergibt. Die Höhe c des zylindrischen Teils 13 der Bohrung 11 kann sich als Schnittzone des Stempels ergeben und die Höhe h des konischen Teils 12 der Bohrung als Ausbruchzone. Aufgrund von beispielsweise Materialungleichmäßigkeiten lassen sich die gewünschten geometrischen Abmessungen aber nicht exakt einhalten, so dass ggf. nachgearbeitet werden muss, um eine reproduzierbare Qualität und Geräuschbelastung zu erreichen. Insbesondere der Radius R muss dabei kantenfrei tangential von dem zylindrischen Teil 13 der Bohrung in die Oberfläche der Siebdecke 5 übergehen.The production of the
- 11
- Trocknerdryer
- 22
- Gehäusecasing
- 33
- Behandlungsraumtreatment room
- 44
- Siebtrommelscreen drum
- 55
- Siebdeckescreen cover
- 66
- Materialbahnweb
- 88th
- Blendecover
- 99
- Walzeroller
- 1010
- Walzeroller
- 1111
- Bohrungdrilling
- 1212
- konischer Teilconical part
- 1313
- zylindrischer Teilcylindrical part
- 1515
- Luftair
- s =s =
- Dicke der SiebdeckeThickness of the screen cover
- d =d =
- Durchmesserdiameter
- D =D =
- Durchmesserdiameter
- h =h =
- Höhe konischer TeilHeight conical part
- R =R =
- Radiusradius
- y =y =
- Deformationszonedeformation zone
- c =c =
- Höhe zylindrischer TeilHeight cylindrical part
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014105060.6A DE102014105060A1 (en) | 2014-04-09 | 2014-04-09 | Dryers for a textile web |
Publications (2)
Publication Number | Publication Date |
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EP2930451A1 true EP2930451A1 (en) | 2015-10-14 |
EP2930451B1 EP2930451B1 (en) | 2018-12-26 |
Family
ID=52633044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP15000657.5A Active EP2930451B1 (en) | 2014-04-09 | 2015-03-06 | Dryer for a textile web |
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Country | Link |
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EP (1) | EP2930451B1 (en) |
CN (1) | CN104976878B (en) |
DE (1) | DE102014105060A1 (en) |
TR (1) | TR201902801T4 (en) |
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---|---|---|---|---|
CN105444545A (en) * | 2015-12-04 | 2016-03-30 | 镇江奥立特机械制造有限公司 | Novel gauze element drying method |
CN107218788A (en) * | 2017-06-16 | 2017-09-29 | 泰州市姜堰新型纺织有限公司 | A kind of special weaving face fabric drying unit |
CN107419582B (en) * | 2017-09-25 | 2019-02-15 | 绥阳县双龙纸业有限公司 | A kind of paper making equipment |
DE102019100756A1 (en) * | 2019-01-14 | 2020-07-16 | A. Monforts Textilmaschinen Gmbh & Co. Kg | Device for treating a web |
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DE1088797B (en) * | 1957-06-08 | 1960-09-08 | Doerries A G O | Suction roll for dewatering fabric, especially paper webs |
US3140157A (en) * | 1959-03-26 | 1964-07-07 | Fleissner Gmbh Fa | Drying apparatus |
US3230636A (en) * | 1966-01-25 | Heat transfer method and means | ||
DE3905001A1 (en) | 1989-02-18 | 1990-08-23 | Fleissner Maschf Ag | SCREEN DRUM DEVICE WITH SCREEN COVER |
DE102010050044A1 (en) * | 2010-10-29 | 2012-05-03 | Trützschler Nonwovens Gmbh | Device for the flow-through treatment of sheet material |
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GB629633A (en) * | 1947-03-27 | 1949-09-23 | Millspaugh Ltd | Suction rolls for paper-making machines |
DE19919757A1 (en) * | 1999-04-29 | 2000-11-02 | Fleissner Maschf Gmbh Co | Sieve drum device for drying permeable webs |
DE102011113834A1 (en) * | 2011-03-14 | 2012-09-20 | Trützschler Nonwovens Gmbh | Device for the flow-through treatment of sheet material |
-
2014
- 2014-04-09 DE DE102014105060.6A patent/DE102014105060A1/en not_active Withdrawn
-
2015
- 2015-03-06 EP EP15000657.5A patent/EP2930451B1/en active Active
- 2015-03-06 TR TR2019/02801T patent/TR201902801T4/en unknown
- 2015-04-08 CN CN201510164037.2A patent/CN104976878B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3230636A (en) * | 1966-01-25 | Heat transfer method and means | ||
DE1088797B (en) * | 1957-06-08 | 1960-09-08 | Doerries A G O | Suction roll for dewatering fabric, especially paper webs |
US3140157A (en) * | 1959-03-26 | 1964-07-07 | Fleissner Gmbh Fa | Drying apparatus |
DE3905001A1 (en) | 1989-02-18 | 1990-08-23 | Fleissner Maschf Ag | SCREEN DRUM DEVICE WITH SCREEN COVER |
DE102010050044A1 (en) * | 2010-10-29 | 2012-05-03 | Trützschler Nonwovens Gmbh | Device for the flow-through treatment of sheet material |
Also Published As
Publication number | Publication date |
---|---|
EP2930451B1 (en) | 2018-12-26 |
DE102014105060A1 (en) | 2015-10-15 |
CN104976878B (en) | 2017-09-08 |
CN104976878A (en) | 2015-10-14 |
TR201902801T4 (en) | 2019-03-21 |
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