EP0854338A1 - Dryer for web- or plate-shaped material - Google Patents

Dryer for web- or plate-shaped material Download PDF

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Publication number
EP0854338A1
EP0854338A1 EP97120593A EP97120593A EP0854338A1 EP 0854338 A1 EP0854338 A1 EP 0854338A1 EP 97120593 A EP97120593 A EP 97120593A EP 97120593 A EP97120593 A EP 97120593A EP 0854338 A1 EP0854338 A1 EP 0854338A1
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EP
European Patent Office
Prior art keywords
dryer
nozzle
plate
conveyors
boxes
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
EP97120593A
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German (de)
French (fr)
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EP0854338B1 (en
Inventor
Friedrich Bahner
Klaus Hentschel
Karl-Friedrich Lang
Gerhard Lehn
Karl Maurer
Manfred Schmidt
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Grenzebach BSH GmbH
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Babcock BSH AG
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Publication of EP0854338A1 publication Critical patent/EP0854338A1/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • 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
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/022—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow
    • F26B21/028—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow by air valves, movable baffles or nozzle arrangements

Definitions

  • the invention relates to a dryer for strip or plate-shaped material, in particular a multi-floor dryer for plasterboard, according to the Preamble of claim 1.
  • the print step already contains clear indications of the problem, uniform drying over the entire width of the conveyor to reach.
  • Various measures are provided for this.
  • the nozzle boxes are wedge-shaped, so that the cross section from the inflow side in Towards the other end. This is supposed to be inside the nozzle box constant pressure is maintained along the entire length.
  • the wedge-shaped nozzle boxes are arranged so that the distance of the Boundary wall facing the continuous plate from the inflow side increases towards the downstream side. This will make the outflow Air with increasing distance from the inflow side according to the increasing amount of increasing cross section provided.
  • the nozzles are short Pipe pieces formed, the length of which is greater, the further they are from the Inflow side are arranged away. This will make the distance between the nozzle mouth and continuous plate kept constant over the entire width.
  • a Another measure is to move the dryer into successive zones divide and the inlet openings of the nozzle boxes from zone to zone to be arranged alternately on opposite sides of the dryer.
  • the non-uniform drying is particularly pronounced with dryers observed that - like the dryer described in the cited publication - have a plurality of conveying devices arranged one above the other in tiers and therefore have a very compact structure.
  • the cross-sectional dimensions of the individual nozzle boxes are very small in relation to the Length. It can - seen in the longitudinal direction of the nozzle box - one give an uneven distribution of the speed at which the air jets flow out of the nozzle openings. Due to the outflow in the transverse direction The air jets become air with increasing distance from the inflow side distracted more and more from the vertical ..
  • the one between the nozzle boxes outflowing air causes an increase in the direction of the outflow side Cooling of the nozzle boxes, which leads to a cooling of the drying air and last Ultimately leads to a deterioration in the drying effect.
  • the invention has for its object a dryer with the in the preamble to equip the specified features with simple means that make it possible to maintain a uniform residual moisture over the entire width and any Correct deviations with little effort. This task is accomplished by the characterizing features of claim 1 solved.
  • the invention takes advantage of the fact that the heat transfer a function of an impinging air flow on a plate to be dried of the distance between the nozzle mouth and the plate.
  • the dryer consists e.g. B. from thirty or more modularly lined up Compartments.
  • a compartment measures 2.0 m to 2.5 m in the direction of conveyance and is 5.0 m up to 6.0 m wide. It has a ceiling 1 and side walls 2, 3.
  • a partition 5 and a grid-like support frame 6 a core area 7 separated from a recirculation duct.
  • This consists of a horizontal channel 8 over the core area 7, one lateral vertical distribution channel 9 and one on the opposite Side essentially mirror-symmetrically arranged collecting duct 10.
  • Die Width of the core area 7 is about 50 to 65% of the total width, the height about 60 to 80% of the total height.
  • In the core area 7 are in several Levels, in practice at about eight to twelve levels, which are equidistant from about 250 to 350 mm above one another, rollers 11 arranged, the one side on the partition 5, on the other side in the Support frame 6 are stored. At the end that is adjacent to the support frame 6 each roller 11 has a pin 12 on which a sprocket 13 is seated. About not chains shown, all rollers 11 can be driven at the same speed.
  • the horizontal channel 8 is formed by a partition plate shaped like a stair step 20 divided into a suction chamber 21 and a pressure chamber 22.
  • the suction space 21 is in open connection with the collecting duct 8, the pressure chamber 22 with the Distribution channel 9.
  • Center in the horizontal channel 8, in the through the Baffle 20 separated pressure space 22 is a free-running (i.e. houseless) one-sided suction radial impeller 23, whose Drive shaft penetrates the ceiling 1 and with one sitting on the ceiling 1 Drive 24 is coupled.
  • the suction funnel 25 of the radial impeller 23 corresponds to an opening in a horizontal region of the separating plate 20, so that the radial impeller 23 is connected on the suction side to the suction chamber 21.
  • the holding plate 19 is provided with a vertical slot 26. Divided by two Screws 27 which reach through the elongated hole 26 are the holding plate 19 with one leg of a U-shaped fastening element 28 connected. The other leg is on a horizontal support 29 of the Support frame 6 attached.
  • the slot 26 allows one in the vertical direction Shift, as symbolized by a double arrow in Figure 5.
  • the nozzle openings 15 3 are designed as circular holes
  • Distance between the nozzle openings 15 and the continuous plate 16 approximately equal to 4 to 5 times the hole diameter. It can be opened on the outflow side reduce the hole diameter by about 2.5 to 4 times.
  • the maximum displacement is approximately 3.0 cm.
  • the nozzle boxes 14a, 14b are approximately 3.0 m long the displacement required dimension elastically deformable.
  • the nozzle boxes 14a, 14b are adjusted during assembly and Commissioning the dryer. When all the nozzle boxes 14a, 14b are assembled that the nozzle openings 15 over the entire width of the same distance the continuous plates, it is usually found that the plates are on the upstream side are drier than on the downstream side.
  • the upper nozzle boxes 14a in FIG. 4 are therefore included a slight slope to the left, the lower nozzle boxes 14b with a slight Slope mounted to the right.
  • the inclination is at least in some compartments, preferably in the inlet-side half of the Drying section. Then shows during commissioning that the residual moisture the plates leaving the dryer are larger or smaller on one side than on the other side, depending on the size of the found Non-uniformity made a correction. This is done by more nozzle boxes a little slanted or with the already slanted Nozzle boxes the incline increases, decreases or reverses, depending on the size of the observed non-uniformity is sufficient, only for a few Nozzle boxes, e.g. B. in the nozzle boxes of a single compartment, the inclination to correct. After performing the correction, the nozzle boxes are therefore in usually locked in different positions.

Abstract

The dryer has a number of e.g. roller-conveyors equal to its number of tiers. Encased nozzles (14a,14b) extend the width of the conveyors and have an inlet at one end, and a closed other end (18). Drying air is blown through the nozzle openings at least on one side of the material conveyed through. The encased nozzles are vertically movable at one end and are fixed in a slanting position in which the distance between the nozzle holes (16) and the conveyor plane on one side of the dryer is greater than on the other side.

Description

Die Erfindung betrifft einen Trockner für band- oder plattenförmiges Gut, insbesondere einen Mehretagentrockner für Gipskartonplatten, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a dryer for strip or plate-shaped material, in particular a multi-floor dryer for plasterboard, according to the Preamble of claim 1.

Sie geht von einem Trockner aus, der durch die DE-OS 19 46 696 bekannt geworden ist. Die Druckschritt enthält schon deutliche Hinweise auf das Problem, auf der ganzen Breite der Fördereinrichtung eine gleichmäßige Trocknung zu erreichen. Hierzu sind verschiedene Maßnahmen vorgesehen. Die Düsenkästen sind keilförmig ausgebildet, so daß der Querschnitt von der Zuströmseite in Richtung auf das andere Ende abnimmt. Dadurch soll innerhalb des Düsenkastens auf der ganzen Länge ein konstanter Druck aufrechterhalten werden. Die keilförmigen Düsenkästen sind so angeordnet, daß der Abstand der Begrenzungswand, die der durchlaufenden Platte zugekehrt ist, von der Zuströmseite in Richtung auf die Abströmseite zunimmt. Dadurch wird der abströmenden Luft mit zunehmendem Abstand von der Zuströmseite ein entsprechend der zunehmenden Menge größer werdender Querschnitt zur Verfügung gestellt. Um trotz des ungleichmäßigen Abstandes zwischen Düsenkasten und durchlaufender Platte auf der ganzen Breite eine gleichmäßige Geschwindigkeit der auf die Platte aufprallenden Trocknungsluftstrahlen zu erhalten, sind die Düsen als kurze Rohrstücke ausgebildet, deren Länge um so größer ist, je weiter sie von der Zuströmseite entfernt angeordnet sind. Dadurch wird der Abstand zwischen Düsenmündung und durchlaufender Platte auf der ganzen Breite konstant gehalten. Eine weitere Maßnahme besteht darin, den Trockner in aufeinanderfolgende Zonen zu unterteilen und die Zuströmöffnungen der Düsenkästen von Zone zu Zone abwechselnd an gegenüberliegenden Seiten des Trockners anzuordnen.It is based on a dryer known from DE-OS 19 46 696 has become. The print step already contains clear indications of the problem, uniform drying over the entire width of the conveyor to reach. Various measures are provided for this. The nozzle boxes are wedge-shaped, so that the cross section from the inflow side in Towards the other end. This is supposed to be inside the nozzle box constant pressure is maintained along the entire length. The wedge-shaped nozzle boxes are arranged so that the distance of the Boundary wall facing the continuous plate from the inflow side increases towards the downstream side. This will make the outflow Air with increasing distance from the inflow side according to the increasing amount of increasing cross section provided. Around despite the uneven distance between the nozzle box and the continuous one Plate across the entire width of a uniform speed of the plate to get impinging jets of drying air, the nozzles are short Pipe pieces formed, the length of which is greater, the further they are from the Inflow side are arranged away. This will make the distance between the nozzle mouth and continuous plate kept constant over the entire width. A Another measure is to move the dryer into successive zones divide and the inlet openings of the nozzle boxes from zone to zone to be arranged alternately on opposite sides of the dryer.

Die zuletzt genannte Maßnahme setzt bei den üblicherweise in Gipskartonplattentrocknern eingesetzten Rollenförderem voraus, daß sowohl die Antriebe mit den Antriebsketten als auch die Versorgungsleitungen in aufeinanderfolgenden Zonen auf entgegengesetzten Seiten angeordnet sind. Daher wechselt auch die für Wartungs- oder Reparaturarbeiten zugängliche Seite von Zone zu Zone. Das ist in der Praxis ein schwerer Nachteil. Schon der Umstand, daß in der erwähnten Druckschrift diese Maßnahme trotzdem empfohlen wird, deutet darauf hin, daß die übrigen Maßnahmen nicht die gewünschte Gleichförmigkeit auf der ganzen Breite gewährleisten.The last-mentioned measure applies to those usually in gypsum plasterboard dryers used roller conveyor that both the drives with the Drive chains as well as the supply lines in successive zones are arranged on opposite sides. Therefore, the changes for Maintenance or repair work accessible side from zone to zone. Is in a serious disadvantage in practice. The very fact that in the mentioned publication this measure is nevertheless recommended, indicates that the other measures do not achieve the desired uniformity across the entire width guarantee.

Die ungleichförmige Trocknung wird in besonders starkem Maße bei Trocknern beobachtet, die - wie der in der angeführten Druckschrift beschriebene Trockner - mehrere etagenartig übereinander angeordnete Fördereinrichtungen aufweisen und aus diesem Grunde einen sehr kompakten Aufbau haben. Die Querschnittsabmessungen der einzelnen Düsenkästen sind dabei sehr klein im Verhältnis zur Länge. Es kann sich - in Längsrichtung des Düsenkastens gesehen - eine ungleichmäßige Verteilung der Geschwindigkeit ergeben, mit der die Luftstrahlen aus den Düsenöffnungen ausströmen. Durch die in Querrichtung abströmende Luft werden die Düsenstrahlen mit zunehmender Entfernung von der Zuströmseite immer stärker aus der Vertikalen abgelenkt.. Die zwischen den Düsenkästen abströmende Luft bewirkt eine in Richtung auf die Abströmseite zunehmende Kühlung der Düsenkästen, die zu einer Abkühlung der Trocknungsluft und letzten Endes zu einer Verschlechterung des Trocknungseffektes führt.The non-uniform drying is particularly pronounced with dryers observed that - like the dryer described in the cited publication - have a plurality of conveying devices arranged one above the other in tiers and therefore have a very compact structure. The cross-sectional dimensions of the individual nozzle boxes are very small in relation to the Length. It can - seen in the longitudinal direction of the nozzle box - one give an uneven distribution of the speed at which the air jets flow out of the nozzle openings. Due to the outflow in the transverse direction The air jets become air with increasing distance from the inflow side distracted more and more from the vertical .. The one between the nozzle boxes outflowing air causes an increase in the direction of the outflow side Cooling of the nozzle boxes, which leads to a cooling of the drying air and last Ultimately leads to a deterioration in the drying effect.

Die in der Druckschrift angegebenen Maßnahmen haben außerdem den Nachteil, daß sie nur schwer korrigierbar sind, wenn sich herausstellt, daß die erforderliche Gleichmäßigkeit nicht ereicht wird.The measures specified in the publication also have the disadvantage that that they are difficult to correct if it turns out that the required Uniformity is not achieved.

Der Erfindung liegt die Aufgabe zugrunde, einen Trockner mit den im Oberbegriff angegebenen Merkmalen mit einfachen Mitteln auszustatten, die es ermöglichen, auf der gesamten Breite eine gleichmäßige Restfeuchte zu erhalten und etwaige Abweichungen mit geringem Aufwand zu korrigieren. Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.The invention has for its object a dryer with the in the preamble to equip the specified features with simple means that make it possible to maintain a uniform residual moisture over the entire width and any Correct deviations with little effort. This task is accomplished by the characterizing features of claim 1 solved.

Bei der Erfindung macht man sich den Umstand zunutze, daß der Wärmeübergang von einem aufprallenden Luftstrom auf eine zu trocknende Platte eine Funktion des Abstandes zwischen Düsenmündung und Platte ist.The invention takes advantage of the fact that the heat transfer a function of an impinging air flow on a plate to be dried of the distance between the nozzle mouth and the plate.

Weitere vorteilhafte Merkmale der Erfindung sind in den Ansprüchen 2 bis 4 angegeben. Further advantageous features of the invention are in claims 2 to 4 specified.

Die Zeichnung dient zur Erläuterung der Erfindung anhand eines vereinfacht dargestellten Ausführungsbeispiels.

Figur 1
zeigt einen Querschnitt.
Figur 2
zeigt einen Längsschnitt mit Ansicht auf die Trennwand.
Figur 3
zeigt ausschnittweise eine Draufsicht auf einige Rollen und Düsenkästen.
Figur 4
zeigt einen Ausschnitt aus Figur 1 in größerem Maßstab.
Figur 4a
zeigt vergrößert eine Einzelheit X aus Figur 4
Figur 5
zeigt eine andere Einzelheit aus Figur 4, ebenfalls in vergrößertem Maßstab.
The drawing serves to explain the invention with reference to an embodiment shown in simplified form.
Figure 1
shows a cross section.
Figure 2
shows a longitudinal section with a view of the partition.
Figure 3
shows a section of a top view of some rollers and nozzle boxes.
Figure 4
shows a section of Figure 1 on a larger scale.
Figure 4a
shows an enlarged detail X from Figure 4
Figure 5
shows another detail from Figure 4, also on an enlarged scale.

Der Trockner besteht z. B. aus dreißig oder mehr baukastenartig aneinandergereihten Abteilen. Ein Abteil misst in Förderrichtung 2,0 m bis 2,5 m und ist 5,0 m bis 6,0 m breit. Es hat eine Decke 1 und Seitenwände 2, 3.The dryer consists e.g. B. from thirty or more modularly lined up Compartments. A compartment measures 2.0 m to 2.5 m in the direction of conveyance and is 5.0 m up to 6.0 m wide. It has a ceiling 1 and side walls 2, 3.

In dem Abteil ist durch eine Zwischendecke 4, eine Trennwand 5 und ein gitterartiges Traggestell 6 ein Kernbereich 7 von einem Umluftkanal abgetrennt. Dieser besteht aus einem waagerechten Kanal 8 über dem Kernbereich 7, einem seitlichen senkrechten Verteilerkanal 9 und einem auf der gegenüberliegenden Seite im wesentlichen spiegelsymmetrisch angeordneten Sammelkanal 10. Die Breite des Kernbereichs 7 beträgt etwa 50 bis 65 % der Gesamtbreite, die Höhe etwa 60 bis 80 % der Gesamthöhe. In dem Kernbereich 7 sind in mehreren Ebenen, in der Praxis in etwa acht bis zwölf Ebenen, die in gleichen Abständen von etwa 250 bis 350 mm etagenartig übereinanderliegen, Rollen 11 angeordnet, die an der einen Seite an der Trennwand 5, an der anderen Seite in dem Traggestell 6 gelagert sind. An dem Ende, das dem Traggestell 6 benachbart ist, hat jede Rolle 11 einen Zapfen 12, auf dem ein Kettenrad 13 sitzt. Über nicht dargestellte Ketten sind alle Rollen 11 mit der gleichen Geschwindigkeit antreibbar. In the compartment is through a false ceiling 4, a partition 5 and a grid-like support frame 6, a core area 7 separated from a recirculation duct. This consists of a horizontal channel 8 over the core area 7, one lateral vertical distribution channel 9 and one on the opposite Side essentially mirror-symmetrically arranged collecting duct 10. Die Width of the core area 7 is about 50 to 65% of the total width, the height about 60 to 80% of the total height. In the core area 7 are in several Levels, in practice at about eight to twelve levels, which are equidistant from about 250 to 350 mm above one another, rollers 11 arranged, the one side on the partition 5, on the other side in the Support frame 6 are stored. At the end that is adjacent to the support frame 6 each roller 11 has a pin 12 on which a sprocket 13 is seated. About not chains shown, all rollers 11 can be driven at the same speed.

Sie bilden daher in jeder Etage einen Rollenförderer, der sich über die gesamte Länge des Trockners erstreckt.They therefore form a roller conveyor on each floor that spans the entire floor Length of the dryer extends.

Unterhalb und oberhalb der Transportebenen, in denen sich die auf den einzelnen Rollenförderern liegenden Platten kontinuierlich durch den Trockner bewegen, sind in den Zwischenräumen nebeneinanderliegender Rollen 11 fingerartige Düsenkästen 14a, 14b angeordnet, die sich über die Breite des Rollenförderers erstrecken. Die der Transportebene zugekehrte Begrenzungswand des Düsenkastens 14a, 14b ist mit Düsenöffnungen 15 zum Aufblasen von Trocknungsluft auf die durchlaufenden Platten 16 versehen. Das eine Ende des Düsenkastens 14a, 14b ist als Zuströmöffnung 17 ausgebildet, das andere Ende 18 ist geschlossen. Die Düsenkästen 14a, 14b sind keilförmig ausgebildet, so daß ihr Querschnitt in Richtung auf das geschlossene Ende 18 stetig abnimmt. Zwischen benachbarten Transportebenen ist jeweils ein oberer Düsenkasten 14a mit einem unmittelbar darunterliegenden Düsenkasten 14b hosenartig verbunden, so daß sie einen Doppelkasten bilden und eine gemeinsame Einströmöffnung 17 haben. Das Ende, an dem sich die Einströmöffnung 17 befindet, sitzt passend in einer rechteckigen Ausnehmung der Trennwand 5. Es ist unbeweglich an der Trennwand 5 befestigt und durch einen in Figur 4a erkennbaren abgewinkelten Kragen ringsum abgedichtet. Am anderen Ende 18 des Düsenkastens 14a, 14b ist eine hochkant angeordnete Halteplatte 19 befestigt.Below and above the transport levels, in which the individual Roller conveyors are continuously moving plates through the dryer in the spaces between adjacent rollers 11 finger-like Nozzle boxes 14a, 14b arranged which extend across the width of the roller conveyor extend. The boundary wall of the Nozzle box 14a, 14b is provided with nozzle openings 15 for inflating Provide drying air on the continuous plates 16. One end of the Nozzle box 14a, 14b is designed as an inflow opening 17, the other end 18 is closed. The nozzle boxes 14a, 14b are wedge-shaped, so that their cross-section decreases steadily in the direction of the closed end 18. There is an upper nozzle box 14a between adjacent transport levels connected to a nozzle box 14b directly underneath, like pants, so that they form a double box and a common inflow opening 17th to have. The end at which the inflow opening 17 is located fits in a rectangular recess of the partition 5. It is immobile on the Partition 5 attached and by an angled recognizable in Figure 4a Collar sealed all around. At the other end 18 of the nozzle box 14a, 14b an upright holding plate 19 attached.

Der waagerechte Kanal 8 ist durch ein treppenstufenähnlich geformtes Trennblech 20 in einen Saugraum 21 und einen Druckraum 22 unterteilt. Der Saugraum 21 steht mit dem Sammelkanal 8 in offener Verbindung, der Druckraum 22 mit dem Verteilerkanal 9. Mittig in dem waagerechten Kanal 8, und zwar in dem durch das Trennblech 20 abgetrennten Druckraum 22, ist ein freilaufendes (d. h. gehäuseloses) einseitig saugendes Radiallaufrad 23 untergebracht, dessen Antriebswelle die Decke 1 durchdringt und mit einem auf der Decke 1 sitzenden Antrieb 24 gekoppelt ist. Mit dem Ansaugtrichter 25 des Radiallaufrades 23 korrespondiert eine Öffnung in einem horizontalen Bereich des Trennblechs 20, so daß das Radiallaufrad 23 saugseitig mit dem Saugraum 21 in Verbindung steht. The horizontal channel 8 is formed by a partition plate shaped like a stair step 20 divided into a suction chamber 21 and a pressure chamber 22. The suction space 21 is in open connection with the collecting duct 8, the pressure chamber 22 with the Distribution channel 9. Center in the horizontal channel 8, in the through the Baffle 20 separated pressure space 22 is a free-running (i.e. houseless) one-sided suction radial impeller 23, whose Drive shaft penetrates the ceiling 1 and with one sitting on the ceiling 1 Drive 24 is coupled. With the suction funnel 25 of the radial impeller 23 corresponds to an opening in a horizontal region of the separating plate 20, so that the radial impeller 23 is connected on the suction side to the suction chamber 21.

Die Halteplatte 19 ist mit einem senkrechten Langloch 26 versehen. Durch zwei Schrauben 27, die durch das Langloch 26 hindurchgreifen, ist die Halteplatte 19 mit einem Schenkel eines U-ähnlich geformten Befestigungselementes 28 verbunden. Der andere Schenkel ist an einem waagerechten Träger 29 des Traggestells 6 befestigt. Das Langloch 26 erlaubt in senkrechter Richtung eine Verschiebung, wie durch einen Doppelpfeil in Figur 5 symbolisiert.The holding plate 19 is provided with a vertical slot 26. Divided by two Screws 27 which reach through the elongated hole 26 are the holding plate 19 with one leg of a U-shaped fastening element 28 connected. The other leg is on a horizontal support 29 of the Support frame 6 attached. The slot 26 allows one in the vertical direction Shift, as symbolized by a double arrow in Figure 5.

Bei dem beschriebenen Ausführungsbeispiel, bei dem die Düsenöffnungen 15 gemäß Figur 3 als kreisrunde Löcher ausgebildet sind, ist auf der Zuströmseite der Abstand zwischen den Düsenöffnungen 15 und der durchlaufenden Platte 16 etwa gleich dem 4- bis 5-fachen Lochdurchmesser. An der Abströmseite läßt er sich auf etwa den 2,5- bis 4-fachen Lochdurchmesser verkleinern. Bei einem Lochdurchmesser von 1,0 bis 1,5 cm beträgt also die Verschiebung maximal etwa 3,0 cm. Die Düsenkästen 14a, 14b sind bei einer Länge von etwa 3,0 m in dem für die Verschiebung erforderlichen Maß elastisch verformbar.In the described embodiment, in which the nozzle openings 15 3 are designed as circular holes, is on the inflow side Distance between the nozzle openings 15 and the continuous plate 16 approximately equal to 4 to 5 times the hole diameter. It can be opened on the outflow side reduce the hole diameter by about 2.5 to 4 times. At a Hole diameters from 1.0 to 1.5 cm, the maximum displacement is approximately 3.0 cm. The nozzle boxes 14a, 14b are approximately 3.0 m long the displacement required dimension elastically deformable.

Die Einstellung der Düsenkästen 14a, 14b erfolgt bei der Montage und Inbetriebnahme des Trockners. Wenn alle Düsenkästen 14a, 14b so montiert sind, daß die Düsenöffnungen 15 auf der gesamten Breite den gleichen Abstand von den durchlaufenden Platten haben, stellt man in der Regel fest, daß die Platten auf der Zuströmseite trockener sind als auf der Abströmseite. Zweckmäßig werden die Düsenkästen 14a, 14b schon bei der Montage nach einer Modellrechnung oder nach Erfahrungswerten ein wenig schräg gestellt, so daß an der Abströmseite der Abstand der Düsenöffnungen 15 von der durchlaufenden Platte 16 kleiner ist als auf der Zuströmseite. Die oberen Düsenkästen 14a in Figur 4 werden daher mit einem leichten Gefälle nach links, die unteren Düsenkästen 14b mit einem leichten Gefälle nach rechts montiert. Bei Trocknern, die aus einer größeren Anzahl von aneinandergereihten Abteilen bestehen, wird die Schräg-stellung zumindest in einigen Abteilen vorgenommen, vorzugsweise in der einlauf-seitigen Hälfte der Trocknungsstrecke. Zeigt sich dann bei der Inbetriebnahme, daß die Restfeuchte der den Trockner verlassenden Platten auf der einen Seite größer oder kleiner ist als auf der anderen Seite, so wird je nach Größe der festgestellten Ungleichförmigkeit eine Korrektur vorgenommen. Dies geschieht, indem man weitere Düsenkästen ein wenig schräg stellt oder bei dem bereits schräggestellten Düsenkästen die Neigung vergrößert, verkleinert oder rückgängig macht.Je nach der Größe der festgestellten Ungleichförmigkeit genügt es schon, nur bei wenigen Düsenkästen, z. B. bei den Düsenkästen eines einzigen Abteils, die Schrägstellung zu korrigieren. Nach der Durchführung der Korrektur sind die Düsenkästen daher in der Regel in unterschiedlichen Stellungen arretiert.The nozzle boxes 14a, 14b are adjusted during assembly and Commissioning the dryer. When all the nozzle boxes 14a, 14b are assembled that the nozzle openings 15 over the entire width of the same distance the continuous plates, it is usually found that the plates are on the upstream side are drier than on the downstream side. The are expedient Nozzle boxes 14a, 14b already during assembly according to a model calculation or according to experience a little slanted so that on the outflow side of the Distance of the nozzle openings 15 from the continuous plate 16 is less than on the inflow side. The upper nozzle boxes 14a in FIG. 4 are therefore included a slight slope to the left, the lower nozzle boxes 14b with a slight Slope mounted to the right. For dryers that consist of a large number of there are lined up compartments, the inclination is at least in some compartments, preferably in the inlet-side half of the Drying section. Then shows during commissioning that the residual moisture the plates leaving the dryer are larger or smaller on one side than on the other side, depending on the size of the found Non-uniformity made a correction. This is done by more nozzle boxes a little slanted or with the already slanted Nozzle boxes the incline increases, decreases or reverses, depending on the size of the observed non-uniformity is sufficient, only for a few Nozzle boxes, e.g. B. in the nozzle boxes of a single compartment, the inclination to correct. After performing the correction, the nozzle boxes are therefore in usually locked in different positions.

Claims (4)

Trockner für band- oder plattenförmiges Gut, insbesondere Mehretagentrockner für Gipskartonplatten, mit Fördereinrichtungen entsprechend der Anzahl der Etagen, insbesondere mit Rollenförderern, und mit Düsenkästen, die sich über die Breite der Fördereinrichtungen erstrecken, an einem Ende eine Zuströmöffnung aufweisen und am anderen Ende geschlossen sind, und mit Düsenöffnungen zum Aufblasen von Trocknungsluft zumindest auf eine Seite des durchlaufenden Gutes, gekennzeichnet durch Düsenkästen (14a, 14b) die zumindest an einem Ende in senkrechter Richtung verschieblich und in einer geneigten Stellung befestigt sind, in der der Abstand der Düsenöffnungen (16) von der Transportebene an einer Seite des Trockners größer ist als an der anderen Seite. Dryer for strip or plate-shaped goods, in particular multi-level dryer for plasterboard, with conveyors according to the number of floors, in particular with roller conveyors, and with nozzle boxes that extend across the width of the conveyors, have an inflow opening at one end and are closed at the other end, and with nozzle openings for inflating drying air at least on one side of the material passing through, characterized by nozzle boxes (14a, 14b) which are displaceable at least at one end in the vertical direction and in an inclined position in which the distance of the nozzle openings (16) from the transport plane is greater on one side of the dryer than on the other side. Trockner nach Anspruch 1, dadurch gekennzeichnet, daß nur das geschlossene Ende (18) des Düsenkastens (14a, 14b) verschieblich ist.Dryer according to claim 1, characterized in that only that closed end (18) of the nozzle box (14a, 14b) is displaceable. Trockner nach Anspruch 1 oder 2, mit mehreren baukastenartig aneinandergereihten Abteilen, dadurch gekennzeichnet, daß die Düsenkästen (14a, 14b) verschiedener Abteile in unterschiedlich geneigten Stellungen befestigt sind. Dryer according to claim 1 or 2, with several modular strings Compartments, characterized in that the nozzle boxes (14a, 14b) different compartments in different inclined positions are. Trockner nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Düsenkasten (14a, 14b) an der Zuströmseite unbeweglich angeordnet und in dem für die senkrechte Verschiebung des geschlossenen Endes (18) erforderlichen Maße elastisch verformbar ist.Dryer according to claim 2 or 3, characterized in that the Nozzle box (14a, 14b) arranged immovably on the inflow side and in for the vertical displacement of the closed end (18) required dimensions is elastically deformable.
EP97120593A 1997-01-17 1997-11-25 Dryer for web- or plate-shaped material Expired - Lifetime EP0854338B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19701426 1997-01-17
DE29700769U DE29700769U1 (en) 1997-01-17 1997-01-17 Dryer for plasterboard
DE19701426A DE19701426C2 (en) 1997-01-17 1997-01-17 Dryer for band or plate-shaped goods

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EP0854338A1 true EP0854338A1 (en) 1998-07-22
EP0854338B1 EP0854338B1 (en) 2002-11-13

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US (1) US5970626A (en)
EP (1) EP0854338B1 (en)
AT (1) ATE227830T1 (en)
DE (3) DE29700769U1 (en)
DK (1) DK0854338T3 (en)
ES (1) ES2191146T3 (en)

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WO2000070283A1 (en) * 1999-05-12 2000-11-23 Babcock-Bsh Gmbh Dryer for goods in strip or panel form
CN102706116A (en) * 2012-01-15 2012-10-03 刘芝英 Printed circuit board drying device
WO2019174784A1 (en) * 2018-03-15 2019-09-19 Grenzebach Bsh Gmbh Nozzle box for a drying device for drying plate-like materials
CN111868464A (en) * 2018-03-15 2020-10-30 格林策巴赫Bsh有限责任公司 Method and device for drying boards
WO2022017646A1 (en) * 2020-07-23 2022-01-27 Grenzebach Bsh Gmbh Dryer for drying a panel-shaped product

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DE19901801C2 (en) * 1999-01-19 2003-12-11 Baldwin Germany Gmbh Device for conditioning a paper web
DE102005017187B4 (en) * 2005-04-13 2007-06-21 Lindauer Dornier Gmbh Continuous dryers in multi-day construction, especially for plate-shaped products
US8061055B2 (en) * 2007-05-07 2011-11-22 Megtec Systems, Inc. Step air foil web stabilizer
US7941936B2 (en) * 2007-05-24 2011-05-17 Ingenious Designs Llc Garment drying apparatus
EP2741037A1 (en) * 2012-12-05 2014-06-11 Saint-Gobain Placo SAS Drying system
CN105066635A (en) * 2015-07-31 2015-11-18 无锡乐华自动化科技有限公司 Hot-roller cocoon drying machine
CN106871629A (en) * 2017-03-31 2017-06-20 湖南夏巍齐食用菌开发有限公司 A kind of heat pump drying case guiding device
CN106871599A (en) * 2017-03-31 2017-06-20 湖南夏巍齐食用菌开发有限公司 A kind of heat pump drying device
CN110000910B (en) * 2019-04-02 2020-10-09 北新集团建材股份有限公司 Thistle board drying equipment air distribution flashboard adjusting device
IT202000003263A1 (en) * 2020-02-18 2021-08-18 System Ceramics S P A Dryer for ceramic tiles or slabs
CN113834308B (en) * 2021-10-25 2022-09-09 杭州利鹏科技有限公司 Drying method for product inventory management

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CN111886467A (en) * 2018-03-15 2020-11-03 格林策巴赫Bsh有限责任公司 Nozzle cartridge for a drying device for drying plate-shaped material
WO2022017646A1 (en) * 2020-07-23 2022-01-27 Grenzebach Bsh Gmbh Dryer for drying a panel-shaped product

Also Published As

Publication number Publication date
DE19701426A1 (en) 1998-07-23
US5970626A (en) 1999-10-26
DE59708712D1 (en) 2002-12-19
EP0854338B1 (en) 2002-11-13
DE19701426C2 (en) 2002-07-11
DK0854338T3 (en) 2003-03-10
DE29700769U1 (en) 1997-03-13
ES2191146T3 (en) 2003-09-01
ATE227830T1 (en) 2002-11-15

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