WO2004106827A2 - Trockeneinrichtung mit einem zylinder, vorrichtung mit einer vielzahl an trockenzylindern und verfahren zum trocknen einer materialbahn - Google Patents
Trockeneinrichtung mit einem zylinder, vorrichtung mit einer vielzahl an trockenzylindern und verfahren zum trocknen einer materialbahn Download PDFInfo
- Publication number
- WO2004106827A2 WO2004106827A2 PCT/DE2004/001046 DE2004001046W WO2004106827A2 WO 2004106827 A2 WO2004106827 A2 WO 2004106827A2 DE 2004001046 W DE2004001046 W DE 2004001046W WO 2004106827 A2 WO2004106827 A2 WO 2004106827A2
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- WO
- WIPO (PCT)
- Prior art keywords
- drying
- cylinder
- zone
- material web
- suction
- Prior art date
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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
- F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
- F26B13/183—Arrangements for heating, cooling, condensate removal
- F26B13/186—Arrangements for heating, cooling, condensate removal using combustion
-
- 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
- Drying device with a cylinder, device with a plurality of drying cylinders and method for drying a material web
- the invention relates on the one hand to a drying device with a cylinder, which has a permeable cylinder jacket, and with a heating device.
- the invention relates to a method for drying a material web, in particular a paper, cardboard or tissue web, in which the material web is heated by means of a permeable guide device.
- the invention also relates to a device with a plurality of drying cylinders for drying a material web.
- the invention relates to a method for drying a material web, in particular a paper, cardboard or tissue web, in which the material web is heated by means of a permeable drying cylinder.
- drying devices or drying cylinders and such methods for drying a material web are known from the prior art.
- Conventional drying apparatuses which have the known drying cylinders, have various disadvantages.
- the conventional paper guide with the known drying cylinders reaches its limits with regard to the ever increasing machine speeds.
- drying apparatuses with drying cylinders which are heated by means of a steam system.
- these drying cylinders have a relatively complex structure, since they have to be designed as a type of steam pressure container which has to withstand relatively high pressures due to the steam guidance.
- drying cylinders which use gas heating. Drying cylinders with gas heating do have the advantage that they no longer have to be designed as steam pressure vessels.
- gas-heated drying cylinders there are disadvantages with regard to the heat distribution on the surface of the drying cylinder, so that the risk here is relatively great that the material web is heated up differently and accordingly also evaporates or dries differently. This different evaporation or drying of the material web leads, particularly when drying paper webs, to unacceptable quality fluctuations in the end product.
- a drying apparatus is described in European patent application EP 1 072 723 A2, in which a fibrous web is guided alternately over heated drying cylinders and over guide rollers.
- a guide belt in the form of a dryer fabric presses the fibrous web against the drying cylinders.
- the drying cylinders have a cylinder jacket that is permeable to air.
- the interior of the drying cylinder is connected to a compressed air source, so that air reaches the fibrous web from the interior of the drying cylinder via the air-permeable cylinder jacket of the drying cylinder.
- the air flowing out of the drying cylinder dries the fibrous web.
- the cylinder jacket is heated from the outside with an induction heater.
- the induction heating is located in an area of the drying cylinder that is not wrapped in the fibrous web.
- the drying cylinder in the non-wrapped area of the cylinder jacket has a fixed cover on the inside, which prevents air from flowing out of the non-wrapped area of the cylinder jacket.
- a disadvantage of this drying group of the drying apparatus is that the fibrous web has to be pressed onto the drying roller by the additional guide belt. This makes the structure of the drying group complicated and therefore expensive. Furthermore, the possible heating power of the drying cylinders is severely restricted by the use of the guide belt, since the guide belt can only be heated to a very limited extent.
- the drying cylinder is heated with the help of steam on its cylinder jacket.
- the drying cylinder consists of a cylinder jacket with continuous axially parallel bores. Each of these holes is about half filled with water, the drying cylinder and in particular the axially parallel bores on the front sides of the drying cylinder are tightly sealed by means of side flanges.
- Steam is now passed through the interior of the drying cylinder by means of suitable lines, which in particular heats up the water located on the axially parallel bores. This has the effect that the water located in the axially parallel lines and evaporating when heated heats the cylinder jacket particularly homogeneously.
- the invention has for its object to provide a drying cylinder with which the drying of a web of material can be carried out more effectively overall.
- the object of the invention is achieved by a drying device with a cylinder, which has a permeable cylinder jacket, and with a heating device, the drying device having a suction device.
- the material web Due to the possibility of evaporation of the material web on both sides in the area of the present cylinder jacket, the material web dries faster on the one hand and on the other hand more homogeneously. In addition to the time advantages compared to conventional drying processes, this also results in advantages in the quality of the dried material web. It has been shown that the use of the drying device according to the invention has a particularly advantageous effect if the web of material is a paper web.
- drying device means on the one hand an assembly which essentially comprises the cylinder with a permeable cylinder jacket, a heating device and a suction device.
- drying device describes the cylinder itself, the cylinder being a heating device and a suction device includes.
- the permeable cylinder jacket allows air to be sucked into the cylinder from a surrounding area of the cylinder.
- Such a permeable cylinder jacket has a plurality of radial bores, so that the cylinder jacket is permeable. It goes without saying that the bores can be arranged in a row or offset along a longitudinal axis of the cylinder. Different diameters or shapes of the bores or openings are also possible.
- the cylinder jacket of the cylinder is heated in a particularly energy-saving and effective manner if the heating device is arranged inside the cylinder.
- a heating device arranged in the cylinder is particularly well protected against mechanical influences.
- the heating device has heat radiators and / or fossil-fired burners. This results in constructionally significant advantages, in particular compared to drying cylinders which are heated with steam, since the present drying device does not have to be designed as a type of steam pressure container. It goes without saying that in this connection the drying device can also be heated by other means.
- a heating option by means of induction heating may be mentioned as an example.
- the invention proposes that the cylinder jacket have a thermal conductivity of more than 40 W / (m * K) or more than 60 W / (m * K), preferably of more than 100 W / (m * K).
- the heating device of the drying device in particular can be designed to be relatively small, which results in space advantages and energy advantages of a drying device. Since the drying of a material web is favorably influenced by the choice of a thermal conductivity of a cylinder jacket described above, the features with regard to thermal conductivity are also advantageous independently of the other features of the invention.
- a preferred embodiment variant provides that the cylinder jacket is divided into at least one suction zone and into at least one blowing zone.
- the term “blowing zone” denotes an area of the cylinder jacket in which air is released from the interior of the drying device through the cylinder jacket to the environment.
- this air which is released from the cylinder interior to the environment, is at least partially An air previously sucked into the interior of the cylinder through the cylinder jacket in the area of the suction zone.
- a blowing zone on a cylinder jacket has the advantage that a preferably previously sucked-in material web is additionally and actively lifted off the cylinder jacket by the air emerging from the cylinder interior in the blowing zone.
- the material web in the area of the blowing zone thus detaches more easily from the cylinder jacket. This facilitates the transition of the material web from a first cylinder to another cylinder. In this way, higher conveying speeds can also be achieved, since the risk of easy tearing of a sensitive material web is significantly reduced.
- suction zone is understood to mean an area of the cylinder jacket in which air is drawn into the interior of the cylinder from an environment through the cylinder jacket.
- suction zone has the advantage that a The material web is sucked onto the cylinder jacket and thus a particularly intimate contact is made between the material web and the cylinder.
- the suction of the material web onto the cylinder jacket in the area of the suction zone has the additional advantage that the material web is particularly advantageous on the material web side facing the cylinder Depending on how strongly the suction power is set, not only a steam generated between the cylinder jacket and the material web, but also steam or air from the material web side facing away from the cylinder jacket can be sucked into the interior of the cylinder.
- several suction and / or blowing zones can be arranged on different areas of the cylinder jacket on one cylinder.
- Several suction zones and or several blowing zones can be provided on the cylinder jacket in the direction of a cylinder longitudinal axis. The zone runs across the cylinder jacket.
- a plurality of suction zones and / or a plurality of blowing zones can be provided on the cylinder jacket transversely to a longitudinal axis of the cylinder.
- the zones run in the circumferential direction of the cylinder jacket.
- the suction zone is connected to the suction device.
- the blowing zone is connected to a blower.
- a blowing zone on the cylinder jacket can be provided in a structurally particularly simple manner.
- the cylinder jacket has a heating zone.
- the cylinder jacket is not only divided into a suction zone and a blowing zone, but also into a heating zone in which the cylinder jacket is heated.
- the suction zone and the blowing zone can each imply a heating zone.
- the drying cylinder is particularly advantageously heatable if the heating zone is different from the suction zone and the blowing zone. This is particularly advantageous if the material bale to be dried does not come into contact with the heating zone of the cylinder jacket at all, but is only connected to the cylinder jacket of the drying cylinder in the area of the suction zone and, if appropriate, still partially in the area of the blowing zone. This ensures that the cylinder jacket is only heated outside the contact area of the material web. The risk of the material web overheating in the contact area with the cylinder jacket is thus greatly reduced.
- An embodiment of a drying cylinder provides that the heating zone adjoins the suction zone and the blowing zone is arranged at least in partial areas of the cylinder jacket between the heating zone and the suction zone.
- the blowing zone between the heating zone and the suction zone is advantageously provided in that region of the cylinder jacket in which the material web, which is otherwise connected to the cylinder jacket, is lifted or released from the cylinder jacket. In this context, it is also advantageous if the cylinder jacket is unheated in the area of the suction zone and in the area of the blowing zone.
- the heating zone is arranged within the blowing zone.
- the drying cylinder is particularly advantageous because in each case the Material web in the area of the blowing zone does not come into contact with the cylinder jacket surface and it is therefore almost impossible for the material web to come into contact with the heating zone during normal operation.
- the web is dried when the suction zone over 3 ⁇ of the cylindrical lateral surface, preferably more than 2/3 of the cylinder jacket surface, occupies.
- suction zone and / or the blowing zone and the heating zone are separated from one another by means of at least one partition. This results in a particularly sharp separation between the suction zone, the blowing zone and the heating zone.
- an additional heating means is arranged on a material web side facing away from the cylinder jacket.
- the air is heated or heated in the region of the material web side facing away from the cylinder jacket by means of the additional heating means, which can also advantageously be configured as a heat radiator and / or as a fossil-fired burner. If this heated air is now sucked through the material web into the interior of the cylinder, the material web is additionally dried by the heated air, as a result of which the material web can be dried much more effectively and therefore more quickly.
- the cylinder has a cavity which is divided into a first region and at least one further region. If the cylinder jacket also includes a heating zone, it is advantageous if the cavity of the cylinder is additionally subdivided accordingly.
- the cavity of the cylinder is structurally particularly simple if the first area and the at least one further area are divided by means of at least one partition.
- the suction zone on the cylinder jacket can be structurally advantageous if there is a negative pressure in the first area, at least in the operating state. This creates a vacuum area inside the cylinder.
- the blowing zone on the cylinder jacket can be implemented in a structurally advantageous manner if an overpressure is present in at least one further region, at least in the operating state. This creates an overpressure area inside the cylinder.
- operating state means the state of the present drying device essentially while a material web is drying in a drying section.
- the suction zone, the blowing zone and the heating zone can maintain their relative positions with respect to the cylinder jacket when the cylinder jacket rotates and do not have to "migrate" with the cylinder jacket during a rotation, it is advantageous if the first and the further regions of the cavity are opposite the axis of rotation
- the area of the suction zone on the cylinder jacket essentially corresponds to the expansion of the vacuum area on the inside of the cylinder jacket.
- the vacuum area that establishes the suction zone on the cylinder jacket is inevitably connected to the suction device explained above
- the separation between the suction zone and the blowing zone on the cylinder jacket essentially runs along the partition wall through which the overpressure area from the underpressure area in the interior of the Z ylinders is separated.
- the heating zone too, the separation essentially runs along a corresponding partition wall, through which the heating area is separated from the negative pressure area and possibly also from the overpressure area inside the cylinder.
- the heating device of the drying device can also be arranged outside the cylinder.
- An embodiment variant provides that the heating device is arranged in the first area having the negative pressure. Arranging the heating device in the negative pressure area is advantageous, since this makes it possible to heat the cylinder jacket at the suction zone, that is to say at the contact surface on which the material web lies essentially against the cylinder jacket. So that there is such a large suction zone on the cylinder jacket, it is advantageous if the negative pressure area has a volume which is at least twice as large as the volume of the positive pressure area.
- the volume of the first area and the volume of the at least one further area can be variably adjusted.
- the expansion of the suction zone and the blowing zone on the cylinder jacket can advantageously be set in a structurally particularly simple manner.
- the volume of the two areas can advantageously be adjusted by a flexible partition.
- a pressure difference of more than 0.01 bar or a pressure difference of between the first area and the at least one further area more than 0.05 bar and preferably a difference of less than 0.5 bar In initial practical tests, it has proven to be advantageous if a pressure difference between 0.05 bar and 0.2 bar is set.
- the object of the invention is also achieved by a device with a plurality of drying cylinders for drying a material web, in which the drying cylinders form a meandering guideway around a central position of the drying cylinders, and in which at least two drying cylinders have a heated zone, and the heating zone each drying cylinder is arranged on the middle layer.
- the term “middle layer” means a plane in which the first drying cylinders are arranged on a first plane side and the second drying cylinders are arranged on a second plane side. However, each cylinder penetrates the plane formed by the middle layer in one or the other Direction such that the heating zones of all drying cylinders are arranged in the area of the middle position.
- An embodiment variant provides that the heating zone of a drying cylinder is arranged on a first side of the central layer and the suction zone and / or the blowing zone of this drying cylinder is arranged on a second side of the central layer, or vice versa. According to a further embodiment, it is advantageous if the heating zone and the blowing zone of a drying cylinder are arranged on a first side of the middle layer and the suction zone of this drying cylinder is arranged on a second side of the middle layer, or vice versa.
- the object of the invention is also achieved by a method for drying a material web, in particular a paper, cardboard or tissue web, in which the material web is heated by means of a permeable guide device and the material web is evaporated on both sides during contact with the guide device. Evaporation of the material web is significantly increased by evaporating the material web on both sides. For this purpose, the material web is guided over the guide device, which can be heated for contact drying. Since the guide device is advantageously provided with a large number of bores, it is possible for the material web not only to evaporate on the material web side facing away from the guide device but also on the material web side facing the guide device.
- the object of the invention is achieved by a method for drying a material web, in particular a paper, cardboard or tissue web, in which the material web is heated by means of permeable drying cylinders and the material web on both sides during contact with an outer surface of at least one drying cylinder is evaporated.
- a liquid present in the material web advantageously evaporates at least partially into the interior of the permeable drying cylinder, so that the material web can also evaporate on the material web side facing the drying cylinder.
- the material web is sucked onto the outer surface of the drying cylinder.
- a particularly favorable transfer of heat from the drying cylinder to the material web is calibrated by sucking the material web onto the outer surface of the drying cylinder.
- This suction of the material web results in a further increase in the evaporation effect on the material baler side facing the drying cylinder.
- the suction primarily makes it necessary to dispense with an additional guide device which presses the material web against the outer surface of the drying cylinder. Overall, an increase in efficiency with regard to the total evaporation performance is achieved.
- the invention proposes that the material web at least partially from the outer surface of the drying cylinder. air is blown out of the interior of the drying cylinder through the jacket surface of the drying cylinder m the surroundings of the drying cylinder
- the drying cylinder is heated in a suction zone in which the material web is sucked onto the jacket surface.
- the drying cylinder is essentially only heated there, where the material web is mainly in contact with the jacket surface of the drying cylinder. This reduces the risk of unnecessary heating energy loss
- a preferred variant of the method provides that air is sucked into the drying cylinder through the jacket surface of the drying cylinder and preferably at least a part of this sucked-in air gets out of the drying cylinder through the jacket surface. This advantageously allows the sucked-in air with which the material web contacts the jacket surface of the drying cylinder was sucked, then possibly used to repel the previously sucked-in material web from the jacket surface. If necessary, it makes sense to dehumidify the previously sucked-in air so that the air again led through the jacket surface wets the material web again
- the suction and blowing away of the material web can advantageously be carried out on or by the drying cylinder if the process is carried out with a pressure difference of more than 0.01 bar or of more than 0.05 bar and preferably of less than 0.5 bar
- the evaporation of the material is ensured on both material web sides and advantageously the evaporation on the material web side facing the material web is additionally intensified by the negative pressure prevailing there
- the object of the invention is achieved, in particular and also independently of all the other features of the invention, by a method for drying a material web, in particular a paper, cardboard or tissue web, in which the material web is heated by means of permeable drying cylinders, with a material web side facing away from a drying cylinder Air is heated or an already warmed air is directed to the material web side facing away from the drying cylinder, and the warmed air is sucked through the material web and through the jacket surface of the drying cylinder m the drying cylinder
- an increase in the evaporation power is calibrated by the fact that air is sucked in from the material web side facing away from the drying cylinder through the material web into the drying cylinder.
- the material web is additionally particularly well ventilated and additionally dried. This is particularly true if the air which is caused by the Mate ⁇ albahn is sucked, is also heated
- FIG. 1 shows a schematic cross section through a drying cylinder
- FIG. 2 shows schematically a longitudinal section through the drying cylinder from FIG. 1,
- FIG. 3 shows a schematic view of an arrangement of drying cylinders in interaction with a material web
- FIG. 4 schematically shows a cross section through a drying cylinder with a heating zone separated from a suction zone and a blowing zone
- 5 shows a schematic view of an arrangement of drying cylinders according to FIG
- Figure 6 schematically shows a cross section through a drying cylinder with a suction zone and a blowing zone, in which a heating device is arranged and
- FIG. 7 schematically shows a view of an arrangement of drying cylinders according to FIG.
- the drying cylinder 1 shown in FIG. 1 has a cylinder jacket 2 which rotates in the direction of rotation 4 about an axis of rotation 3.
- the cylinder jacket 2 of the drying cylinder 1 has a plurality of bores 5 which penetrate the cylinder jacket 2 radially. As a result, the cylinder jacket 2 is particularly permeable to air.
- a cavity is divided into a first chamber 6 and a second chamber 7 within the drying cylinder 1.
- a negative pressure 8 is present in the first chamber 6 and an excess pressure 9 is present in the second chamber 7.
- a plurality of heat radiators 10 are arranged in the first chamber 6.
- the heat radiators 10 form a heating device which is arranged inside the drying cylinder 1.
- a suction zone 13 is provided on the outer circumference of the cylinder jacket 2, which is arranged between the two boundaries 14 and 14A.
- the suction zone 13 extends from the boundary 14 in the direction of the arrow 15 to the boundary 14A or vice versa.
- blowing zone 16 on the outer circumference of the cylinder jacket 2.
- This blowing zone 16 is likewise delimited by the two delimitations 14 and 14A and runs from the delimitation 14 in the direction of arrow 17 to the delimitation 14A or vice versa ,
- an internal air 18 is blown into the environment 12 from the chamber 7, in which an overpressure 9 is present.
- the cylinder jacket 2 of the drying cylinder 1 moves about the axis of rotation 3
- the partition wall 19 is at least sealed against the inside 20 at the adjoining regions 21 and 22 in such a way that on the one hand the cylinder jacket 2 can move relative to the partition wall 19 and on the other hand that despite the relative movement between the partition wall 19 and the cylinder jacket 2
- Both the suction zone 13 and the blowing zone 16 exist on the outer circumference of the cylinder jacket.
- the large number of heat radiators 10 are arranged at a short distance from the inside 20 of the cylinder jacket 2.
- a frame 23 is arranged in the interior of the drying cylinder 1, on which in particular the components arranged in the vacuum chamber 6 and in the pressure chamber 7, as if the heat radiators 10 and the partition 19, attached.
- the drying cylinder 1 is delimited on its two end faces by a front end 24 and a rear end 25 (see FIG. 2). Both the front end 24 and the rear end 25 are attached to the cylinder jacket 2 so that they cannot rotate.
- the front end 24 is mounted on a shaft journal 26, the shaft journal 26 in turn being supported in a first holding area 28 of a machine frame 29 by means of a roller bearing 27.
- the rear end 25 of the drying cylinder 1 is mounted on a further holding area 31 of the machine frame 29 by means of a further roller bearing 30.
- the cylinder jacket 2 of the drying cylinder 1 can rotate around the axis of rotation 3.
- a front end stand wall 32 is mounted on the shaft journal 26 by means of a roller bearing 33 in such a way that the front end stand wall 32 is supported on the shaft axis 26 rotating about the axis of rotation 3.
- the frame 23 comprises a rear end stand wall 34, which is fixed in a fixed holder 35 of the machine frame 29.
- Both the front end stand wall 32 and the rear end stand wall 34 are in sealing contact with the cylinder jacket 2 by means of circumferential sealing lips 36 and 37.
- the drying cylinder 1 has an exhaust air discharge 39.
- the drying cylinder 1 has, in addition to the exhaust air discharge 39 for a supply air 40, a supply air supply 41.
- the incoming air 40 which has entered the overpressure chamber 7 is blown out of the overpressure chamber 7 as internal air 18 through the bores 5 of the cylinder jacket 2.
- the exhaust air discharge 39 is in direct contact with a suction device 42 which sucks the first chamber 6.
- the suction device 42 is connected to the suction zone 13 via the exhaust air discharge 39.
- the supply air supply 41 is connected to a blower 43 with which a supply air 40 is blown into the second chamber 7.
- the blower 43 is thus indirectly connected to the blowing zone 16. It goes without saying that both the suction device 42 with the suction zone 13 and the blower 43 with the blowing zone 16 can be in direct contact, provided this is advantageous in an application.
- the part 50 of a drying apparatus 51 shown in FIG. 3 shows a plurality of the drying cylinders 1 described above (numbered here only by way of example), over which a material web 52 to be dried is guided.
- Each drying cylinder 1 of the drying apparatus has its own drive (not shown here) for driving the material web 52.
- two driven deflecting rollers 53 and 54 ensure that the material web 52 is properly and safely fed to the drying cylinders 1 and that the material web 52 is properly and safely guided away from the drying cylinders 1.
- the individual drying cylinders 1 are arranged below and above the material web 52 such that each of the drying cylinders 1 is wrapped around by the material web 52 as far as possible.
- the material web 52 is essentially in contact with the respective drying cylinder 1 in the area of the suction zone 13, since it is sucked onto the cylinder jacket 2 in particular in this area.
- the material web 52 is repelled by the cylinder jacket 2, since the internal air 18 flowing out of the pressure chamber 7 via the bores 5 (see FIGS. 1 and 2) of the cylinder jacket 2 actively lifts the material web 52 off the cylinder jacket 2.
- the material web 52 reaches the cylinder jacket 2 of the drying cylinder 1 via the first deflecting roller 53, specifically in an area 56 in which the cylinder jacket 2 passes from the blowing zone 16 into the suction zone 13.
- This first transition region 56 runs inside the drying cylinder 1, the partition 19, which separates the pressure chamber 7 from the vacuum chamber 6.
- the material web 52 In the area of the suction zone 13, the material web 52 is sucked onto the cylinder jacket 2, so that a particularly intimate contact arises between the material web 52 and the cylinder jacket 2. In the further course in the direction of rotation of the arrow 4, the material web 52 reaches a second transition region 57 from the suction zone 13 into the blowing zone 16. In this second transition region 57, the material web 52 is blown away from the cylinder jacket 2, so that the material web 52 detaches particularly easily from the cylinder jacket 2.
- a further drying cylinder 58 is arranged on the first drying cylinder 1 of the drying apparatus 51, on which the material web 52 passes through the drying apparatus 51 in its further course.
- the drying cylinder 58 has essentially the same structure as the drying cylinder 1. Accordingly, the drying cylinder 58 also has a suction zone 59 and a blowing zone 60, so that the material web 52 essentially moves from the suction zone 13 of the drying cylinder 1 into the suction zone 59 of the drying cylinder 58 passes. In this case, the material web 52 in the region 57 is lifted off the cylinder jacket 2 of the drying roller 1 in the region of the blowing zone 16, so that the material web 52 advantageously detaches from the cylinder jacket 2. At the same time, the material web 52 is pressed against the cylinder jacket 61 of the drying cylinder 1 by the internal air 18 emerging from the drying cylinder 1.
- This procedure also runs through the material web 52 on the other drying cylinders (not further numbered in the present case) of the drying apparatus 51 until the material bale 52 reaches the further deflecting roller 54 and is conveyed out of the drying apparatus 51.
- the drying cylinder 101 shown in FIG. 4 has a cylinder jacket 102 which rotates about an axis of rotation 103 in the direction of rotation 104.
- the cylinder jacket 102 has radial bores 105 (here numbered and identified only by way of example).
- the cylinder jacket 102 is permeable to air through the bores 105.
- a vacuum chamber 170, an overpressure chamber 171 and a heating chamber 172 are arranged inside the drying cylinder 101.
- the vacuum chamber 170 extends in the direction of the arrow 115 from a first partition 173 to a second partition 174.
- a vacuum 108 is present in it.
- the heating chamber 172 is separated on the one hand from the suction chamber 170 by the first partition 173 and on the other hand from the blowing chamber 171 by a third partition 175.
- a suction zone 113 is created on the cylinder jacket 102.
- a blowing zone 116 is provided on the cylinder jacket 102 in the area of the blowing chamber 171.
- the drying cylinder 101 has a heating zone 176 on the cylinder jacket 102.
- a plurality of heat radiators 110 are provided within the heating chamber 172.
- the heating zone 176 of the drying cylinder 101 is heated by means of the heat radiators 110.
- the cylinder jacket 102 thus heated rotates in the direction of rotation 104 further beyond the suction chamber 170.
- ambient air 111 is drawn from outside through the bores 105 into the suction chamber 170.
- internal air 118 is blown out into the surroundings 112 via the bores 105.
- the chambers 170, 171 and 172 are realized by the partition walls 173, 174 and 175 which are stationary with respect to the axis of rotation 103.
- the arrangement 180 shown in FIG. 5 has a first drying cylinder 181, a second drying cylinder 182, a third drying cylinder 183, a fourth drying cylinder 184 and a fifth drying cylinder 185.
- the arrangement 180 of the drying cylinders 181 to 185 is arranged around a central layer 186, around which a material web 152 is meandered in the direction of the arrow 155.
- the material web 152 is fed to the arrangement 180 via a first deflecting roller 153 and removed again via a second deflecting roller 154.
- Each of the drying cylinders 181 to 185 has the same structure as the drying cylinder 101 from FIG. 4.
- the drying cylinders 181 to 185 are arranged opposite one another in such a way that the respective heating zone 176 (numbered here only by way of example) of each individual drying cylinder 181 to 185 in an area along the central layer 186 is arranged. This makes it easier for the material web 152 to touch the respective drying cylinder 181 to 185 only at its respective suction zone 113 or at its respective blowing zone 116 (see FIG. 4).
- the arrangement 180 thus makes it possible that the material web 152 does not come into contact with the respective heating zone 186 of the drying cylinders 181 to 185, but rather is supplied to the respective drying cylinder 181 to 185 only in the area of the suction zone 113 and is lifted from this drying cylinder in the area of the blowing zone 116 and if necessary is transferred to a further drying cylinder 182 to 185.
- the heating zones 176 of the drying cylinders 181, 183 and 185 are located on a first side 190 of the middle layer 186 and the suction zones 113 and the blowing zones 116 of these drying cylinders are on a second side 191 of the middle layer 186.
- an additional heating means 162 is arranged in its surroundings 112. The material web 152 is also heated from the outside by means of the additional heating means 162.
- the drying cylinder 201 shown in FIG. 6 has a cylinder jacket 202 which is divided into a suction zone 213 and a blowing zone 216, which at the same time also represents a heating zone 276 of the drying cylinder 201.
- the cylinder jacket 202 rotates in the direction of rotation 204 about an axis of rotation 203.
- the cylinder jacket 202 has a large number of radial bores 205 which in this exemplary embodiment extend over the entire cylinder jacket 202.
- a vacuum chamber 270 is provided in the interior of the drying cylinder 201, in which a vacuum 208 is established.
- An overpressure chamber 271 is arranged in the area of the blowing zone 216 in the interior of the drying cylinder 201.
- the blowing zone 216 extends from a partition 273 in the direction of the arrow 215 to the partition 274.
- a number of heat radiators 210 are arranged within the overpressure chamber 271 as the primary heating device of the drying cylinder 201.
- the blowing zone 216 is at the same time the heating zone 276 of the drying cylinder 201.
- ambient air 211 is drawn in from the environment 212 into the vacuum chamber 270 of the drying cylinder 201 through the individual radial bores 205.
- blowing zone 216 In the area of the blowing zone 216, inside air 218 is blown from the overpressure chamber 271 through the bores 205 into the surroundings 212.
- the blowing zone 216 of the drying cylinder 201 is continuously heated by means of the heat radiators 210.
- the cylinder jacket 202 thus heated rotates in the direction of rotation 204 further beyond the suction chamber 270, into which ambient air 211 is drawn from the surroundings 212.
- the vacuum chamber 270 and the overpressure chamber 271 within the drying cylinder 201 are constructed in such a way that they do not follow the rotation of the cylinder jacket 202 , but are stationary with respect to the axis of rotation 203.
- the arrangement 280 shown in FIG. 7 has a first drying cylinder 281, a second drying cylinder 282, a third drying cylinder 283, a fourth drying cylinder 284 and a fifth drying cylinder 285.
- the drying cylinders 281 to 285 are arranged around a central layer 286, around which a material web 252 is meandered in the direction of the arrow 255.
- the material web 252 is transferred to the drying cylinders 281 to 285 via a first change Steering roller 253 fed and discharged from the drying cylinders 281 to 285 via a second deflecting roller 254.
- Each of the drying cylinders 281 to 285 has the same structure as the explained drying cylinder 201 from FIG. 6.
- the drying cylinders 281 to 285 are essentially with their respective heat radiators 210 (only by way of example with reference to FIG Drying cylinder 281 shown) arranged such that the respective heating devices, which are formed by the heat rays 210, are arranged in the region of the central layer 286.
- the material bale 252 is only in contact with the suction zone 213 of the respective drying cylinder 281 to 285.
- the blowing zones 216 with the heating zones 276 of the drying cylinders 281, 283 and 285 integrated therein are arranged on a first side 290 of the central layer 286 and the suction zones 213 of these drying cylinders 281, 283 and 285 on a second side 291 of the central layer 286.
- the blowing zones 216 with the heating zones 276 of the drying cylinders 282 and 284 integrated on the other hand lie on the second side 291 and the suction zones of these drying cylinders 282 and 284 on the first side 290 of the middle layer 286.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Drying Of Solid Materials (AREA)
- Paper (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04738519A EP1627194A2 (de) | 2003-05-28 | 2004-05-18 | Trockeneinrichtung mit einem zylinder, vorrichtung mit einer vielzahl an trockenzylindern und verfahren zum trocknen einer materialbahn |
DE112004000932T DE112004000932D2 (de) | 2003-05-28 | 2004-05-18 | Trockeneinrichtung mit einem Zylinder, Vorrichtung mit einer Vielzahl an Trockenzylindern und Verfahren zum Trocknen einer Materialbahn |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10324616.9 | 2003-05-28 | ||
DE2003124616 DE10324616A1 (de) | 2003-05-28 | 2003-05-28 | Trockenzylinder und Verfahren zum Trocknen einer Materialbahn |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004106827A2 true WO2004106827A2 (de) | 2004-12-09 |
WO2004106827A3 WO2004106827A3 (de) | 2005-01-13 |
Family
ID=33441508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/001046 WO2004106827A2 (de) | 2003-05-28 | 2004-05-18 | Trockeneinrichtung mit einem zylinder, vorrichtung mit einer vielzahl an trockenzylindern und verfahren zum trocknen einer materialbahn |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1627194A2 (de) |
DE (2) | DE10324616A1 (de) |
WO (1) | WO2004106827A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107268323A (zh) * | 2017-02-24 | 2017-10-20 | 平江县兴科云母制品有限公司 | 一种电热式云母纸蒸干机 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005063563B3 (de) * | 2005-12-08 | 2014-08-28 | Sartorius Stedim Biotech Gmbh | Vorrichtung zum Entfernen flüchtiger Medien |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19723532A1 (de) | 1997-06-05 | 1998-12-10 | Voith Sulzer Papiermasch Gmbh | Beheizter Trockenzylinder |
EP1072723A2 (de) | 1999-07-24 | 2001-01-31 | Voith Paper Patent GmbH | Beheizter Trockenzylinder |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB405997A (en) * | 1932-02-05 | 1934-02-05 | Nat Electric Heating Co Inc | Improvements in or relating to methods of electrically heating or drying materials |
US2763477A (en) * | 1954-10-01 | 1956-09-18 | Ind Heat Engineering Company | Drying machine |
DE947544C (de) * | 1955-02-03 | 1956-08-16 | Haas Friedrich Maschf | Vorrichtung zum Absaugen von vorzugsweise spannungslos gefuehrten Textilbahnen |
CH354408A (de) * | 1956-07-04 | 1961-05-31 | Erich Kiefer Konstruktions Kg | Lochtrommeltrockner zum Trocknen von Textilgut, losem Fasermaterial, Chemikalien und dergleichen |
DE1065807B (de) * | 1956-07-04 | 1959-09-24 | Erich Kiefer Konstruktionskomman ditgesellschaft, Gartringen (Wurtt) | Loch trommeltrockner zum Trocknen von Textilgut |
FR1314360A (fr) * | 1959-08-04 | 1963-01-11 | Fleissner | Dispositif de contraction |
GB922296A (en) * | 1961-02-16 | 1963-03-27 | Strattwell Developments Ltd | Improvements in apparatus for drying continuous webs of textile and other materials |
GB958176A (en) * | 1962-10-05 | 1964-05-13 | William Paul Dapses | Drying drum |
GB1026898A (en) * | 1964-03-20 | 1966-04-20 | Svenska Flaektfabriken Ab | Rotatable roller for a web-like material |
US3271016A (en) * | 1964-10-27 | 1966-09-06 | Ind Heat Engineering Corp | Machine for heat setting synthetic fabrics |
GB1133869A (en) * | 1965-07-13 | 1968-11-20 | Vepa Ag | Apparatus and process for the heat treatment of textile material |
GB1107070A (en) * | 1965-10-13 | 1968-03-20 | Vepa Ag | Device for the heat-treatment of materials in long lengths |
DE1610912B1 (de) * | 1967-09-27 | 1972-03-16 | Brueckner Trockentechnik Kg | Vorrichtung zur Behandlung einer kontinuierlich bewegten Warenbahn |
US3828410A (en) * | 1973-02-22 | 1974-08-13 | Gaston County Dyeing Mach | Honeycomb roll |
US4074441A (en) * | 1976-03-08 | 1978-02-21 | Frederick D. Helversen | Rotary through dryer having multiple vacuum chambers and associated heaters |
DE3525950A1 (de) * | 1985-06-18 | 1986-12-18 | Sulzer-Escher Wyss AG, Zürich | Walze zur thermischen behandlung einer warenbahn und deren verwendung |
DE4322565A1 (de) * | 1993-07-07 | 1993-12-09 | Voith Gmbh J M | Filzsauger mit feuchter Warmluftzufuhr von der Saugseite |
US5915813A (en) * | 1996-05-21 | 1999-06-29 | Fort James Corporation | Apparatus and method for drying a wet web and modifying the moisture profile thereof |
US6631566B2 (en) * | 2000-09-18 | 2003-10-14 | Kimberly-Clark Worldwide, Inc. | Method of drying a web |
-
2003
- 2003-05-28 DE DE2003124616 patent/DE10324616A1/de not_active Withdrawn
-
2004
- 2004-05-18 DE DE112004000932T patent/DE112004000932D2/de not_active Expired - Fee Related
- 2004-05-18 EP EP04738519A patent/EP1627194A2/de not_active Withdrawn
- 2004-05-18 WO PCT/DE2004/001046 patent/WO2004106827A2/de active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19723532A1 (de) | 1997-06-05 | 1998-12-10 | Voith Sulzer Papiermasch Gmbh | Beheizter Trockenzylinder |
EP1072723A2 (de) | 1999-07-24 | 2001-01-31 | Voith Paper Patent GmbH | Beheizter Trockenzylinder |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107268323A (zh) * | 2017-02-24 | 2017-10-20 | 平江县兴科云母制品有限公司 | 一种电热式云母纸蒸干机 |
Also Published As
Publication number | Publication date |
---|---|
DE112004000932D2 (de) | 2006-02-09 |
DE10324616A1 (de) | 2004-12-16 |
WO2004106827A3 (de) | 2005-01-13 |
EP1627194A2 (de) | 2006-02-22 |
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