AT92635B - Arrangement of air heaters to generate warm air for drying the felts and fabric webs on paper, cardboard, pulp, cardboard machines and the like. like - Google Patents

Arrangement of air heaters to generate warm air for drying the felts and fabric webs on paper, cardboard, pulp, cardboard machines and the like. like

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Publication number
AT92635B
AT92635B AT92635DA AT92635B AT 92635 B AT92635 B AT 92635B AT 92635D A AT92635D A AT 92635DA AT 92635 B AT92635 B AT 92635B
Authority
AT
Austria
Prior art keywords
cardboard
air
drying
felts
paper
Prior art date
Application number
Other languages
German (de)
Original Assignee
Voith J M Fa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith J M Fa filed Critical Voith J M Fa
Application granted granted Critical
Publication of AT92635B publication Critical patent/AT92635B/en

Links

Description

  

   <Desc/Clms Page number 1> 
 



    Anordnung von Lufterhitzern zur Erzeugung warmer Luft für die Trocknung der Filze und Stoffbahnen an Papier-, Pappen-, Zellstoff-, Kartonmaschinen u. dgl.   



   Es sind bereits Vorrichtungen bekannt, bei welchen zur Unterstützung des Trockenprozesses an Zylindertroekenapparaten heisse Druckluftströme an die Papier-, Pappen-, Zellstoffbahnen u. dgl. sowie auch an die Trockenfilze geführt werden. 



   Bei diesen bekannten Vorrichtungen wird die heisse Luft in ausserhalb der Maschine liegenden Heizkörpern erzeugt und mittels Ventilatoren und Rohrleitungen an die Verwendungsstellen gedrückt. 



   Bei grossen Trockenapparaten werden diese Leitungen sehr lang, wodurch ein grosser Teil der   erzeugten'Wärme durch Ausstrahlung verloren geht und die Warmluft an Dampfaufnahmefähigkeit verliert.   



  Auch sind Maschinen bekannt, bei welchen die Stirnböden der Trockenzylinder zur Erwärmung der Druckluft dienen, hiebei sind ebenfalls grosse   Abkühlungsflächen   vorhanden. 



   Bei der vorliegenden Erfindung ist dieser Übelstand dadurch beseitigt, dass die Lufterhitzer an Stelle von Filztrockenzylindern in die Trockenapparate der Papier-, Pappen-, Zellstoff-, Kartonmaschinen u. dgl. eingebaut sind. derart, dass die Filze so um die Erhitzer geführt werden, dass die ausstrahlende Wärme derselben trocknen auf sie einwirkt, ausserdem gelangt noch direkte Heissluft aus dem Erhitzer durch Düsen an die Filze und durch besondere Leitungen auch an die Papierbahn, sättigt sich mit Wasserdampf und zieht seitlich ab. 



   Auf diese Weise ist die beste Wärmeausnutzung geschaffen und durch den Wegfall der rotierenden Filztrockenzylinder, die in der Regel von den Filzen mitgezogen werden müssen, ein weiterer Vorteil und eine längere Laufdauer der Filze erreicht. 



   Dadurch, dass jede Gruppe von Trockenzylindern ihre eigenen Lufterhitzer hat, kann auch die Temperatur der Heissluft für jede Gruppe eingestellt werden. 



   Die Zeichnung zeigt zwei Ausführungsformen, in Fig. 1 sind a, al zylindrische, mit Dampf geheizte Lufterhitzer, um welche die Filze b, b1 so geführt sind, dass nur die Öffnungen e,   Ci   zur Einführung der Luftzuführungsrohre d,   d1   frei bleiben. Die frische oder vorgewärmte Luft tritt bei d,   d1   in die Heizkörper ein und verlässt diese durch die   Rohre t, 11'Die   Düsen e, Cl unterstützen die   Filztrocknung.   



   Bei der Ausführungsform Fig. 2 sind die Lufterhitzer flach gehalten, wodurch sich eine einfachere Filzführung ergibt. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



    Arrangement of air heaters to generate warm air for drying the felts and fabric webs on paper, cardboard, pulp, cardboard machines and the like. like



   Devices are already known in which to support the drying process on cylinder drying apparatuses, hot compressed air flows to the paper, cardboard, cellulose webs and the like. Like. As well as to the drying felts.



   In these known devices, the hot air is generated in radiators located outside the machine and pressed to the points of use by means of fans and pipes.



   In large dryers, these lines are very long, which means that a large part of the heat generated is lost through radiation and the warm air loses its ability to absorb steam.



  Machines are also known in which the end bottoms of the drying cylinders are used to heat the compressed air, and large cooling surfaces are also provided.



   In the present invention, this drawback is eliminated in that the air heaters in place of felt drying cylinders in the drying apparatus of paper, cardboard, pulp, cardboard machines and the like. Like. Are built in. in such a way that the felts are guided around the heater in such a way that the radiant heat from the heater acts on them dry, and direct hot air from the heater also reaches the felts through nozzles and through special lines to the paper web, becomes saturated with water vapor and pulls sideways.



   In this way, the best use of heat is achieved and the elimination of the rotating felt drying cylinder, which usually has to be pulled along by the felts, provides a further advantage and a longer service life for the felts.



   Because each group of drying cylinders has its own air heater, the temperature of the hot air can also be set for each group.



   The drawing shows two embodiments, in Fig. 1 a, al are cylindrical, steam-heated air heaters around which the felts b, b1 are guided so that only the openings e, Ci for the introduction of the air supply pipes d, d1 remain free. The fresh or preheated air enters the radiators at d, d1 and leaves them through the pipes t, 11 '. The nozzles e, Cl support the felt drying.



   In the embodiment of FIG. 2, the air heaters are kept flat, which results in a simpler felt guide.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRÜCHE : Anordnung von Lufterhitzern zur Erzeugung warmer Luft für die Trocknung der Filze und Stoffbahnen an Papier-, Pappen-, Zellstoff-, Kartonmaschinen u. dgl., dadurch gekennzeichnet, dass die Lufterhitzer zugleich als Filztrockner dienend in die Maschine eingebaut sind. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIMS: Arrangement of air heaters to generate warm air for drying the felts and fabric webs on paper, cardboard, pulp, cardboard machines and the like. Like., characterized in that the air heaters are built into the machine to serve as felt dryers. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT92635D 1922-02-13 1922-03-30 Arrangement of air heaters to generate warm air for drying the felts and fabric webs on paper, cardboard, pulp, cardboard machines and the like. like AT92635B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE92635X 1922-02-13

Publications (1)

Publication Number Publication Date
AT92635B true AT92635B (en) 1923-05-11

Family

ID=5644273

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92635D AT92635B (en) 1922-02-13 1922-03-30 Arrangement of air heaters to generate warm air for drying the felts and fabric webs on paper, cardboard, pulp, cardboard machines and the like. like

Country Status (1)

Country Link
AT (1) AT92635B (en)

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