DE1112713B - Calender with externally heated rollers, especially for textile and paper webs - Google Patents
Calender with externally heated rollers, especially for textile and paper websInfo
- Publication number
- DE1112713B DE1112713B DER24994A DER0024994A DE1112713B DE 1112713 B DE1112713 B DE 1112713B DE R24994 A DER24994 A DE R24994A DE R0024994 A DER0024994 A DE R0024994A DE 1112713 B DE1112713 B DE 1112713B
- Authority
- DE
- Germany
- Prior art keywords
- calender
- textile
- externally heated
- paper webs
- heated rollers
- 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.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C15/00—Calendering, pressing, ironing, glossing or glazing textile fabrics
- D06C15/08—Rollers therefor
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0246—Hard rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
- D21G1/028—Heating or cooling the rolls; Regulating the temperature using electrical means
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Paper (AREA)
Description
Kalander mit von außen beheizten Walzen, insbesondere für Textil- und Papierbahnen Die Erfindung bezieht sich auf Kalander mit während des Arbeitsvorganges von außen beheizten Walzen, deren Oberflächen eine gleichmäßige Temperatur aufweisen sollen und die insbesondere für die Bearbeitung von Textil- oder Papierbahnen verwendet werden.Calender with externally heated rollers, especially for textile and paper webs The invention relates to calenders with during the working process externally heated rollers, the surfaces of which have a uniform temperature and which are used in particular for the processing of textile or paper webs will.
Bisher wurden die Hartwalzen von Kalandern üblicherweise von innen geheizt, und zwar mit Dampf, Gas oder durch elektrische Einrichtungen. Diese Art der Beheizung erfordert jedoch eine gewisse Zeit, bis die Walzenoberfläche die gewünschte Temperatur aufweist, da ja die ganze Walze durch und durch geheizt werden muß. Der deshalb erforderliche hohe Energieaufwand wird noch dadurch vergrößert, daß eine starke Wärmeabstrahlung an den umliegenden Raum erfolgt. Außerdem strömt Wärme an den beiden Enden der Walzen über die Lagerzapfen ab, wodurch die Oberflächentemperatur ungleichmäßig wird. Ein weiterer Nachteil dieser Ausführung besteht darin, daß die Geschwindigkeit der zu behandelnden Waren nicht beliebig erhöht werden kann, weil die Wärmenachfuhr aus dem Inneren der Hartwalzen beschränkt ist.So far, the hard rolls of calenders were usually from the inside heated with steam, gas or electrical equipment. This kind However, the heating requires a certain time until the roller surface has the desired Has temperature, since the whole roller must be heated through and through. Of the therefore required high energy expenditure is increased by the fact that a there is strong heat radiation to the surrounding space. In addition, heat flows into it the two ends of the rollers over the bearing journals, reducing the surface temperature becomes uneven. Another disadvantage of this design is that the The speed of the goods to be treated cannot be increased at will because the supply of heat from inside the hard rolls is limited.
Man hat deshalb bereits Kalanderwalzen entwikkelt, die durch nahe dem Außenumfang der Walzen angeordnete elektrische Glühstäbe beheizt werden. Zur Vermeidung der Wärmeabstrahlung an den umliegenden Raum hat man die von außen beheizten Walzen mit Isolierhauben umgeben. Hierdurch verringert man zwar die Wärmeabstrahlung nach außen, aber es ist immer noch ein Wärmeabfluß über die Lagerzapfen vorhanden, durch den die Temperaturverteilung über die Walzenbreite ungleichmäßig wird.One has therefore already developed calender rolls, which by close the outer circumference of the rollers arranged electric glow rods are heated. To the To avoid heat radiation to the surrounding space, one has the externally heated one Rollers surrounded by insulating hoods. This reduces the heat radiation to the outside, but there is still a heat leakage via the bearing journals, which makes the temperature distribution uneven across the width of the roll.
Um die Nachteile der bekannten Einrichtungen zu vermeiden, wird gemäß der Erfindung vorgeschlagen, die mit Isolierhauben umgebenen und von außen durch Heizstrahler beheizten Walzen so auszubilden, daß der Walzenkern durch eine Isolierschicht von dem Mantel getrennt ist, wodurch die Wärme nicht bis zum Walzenkern vordringen und durch die Lagerzapfen abströmen kann.In order to avoid the disadvantages of the known devices, according to proposed the invention, the surrounded with insulating hoods and from the outside through Form radiant heaters heated rollers so that the roller core is covered by an insulating layer is separated from the jacket, whereby the heat does not penetrate to the roller core and can flow off through the bearing journals.
Die hier beschriebenen Kalanderwalzen weisen einen geringen Wärmeverlust und eine gleichmäßige Temperaturverteilung auf und lassen sich schnell den verschieden großen Geschwindigkeiten der durchlaufenden Ware anpassen. In der Zeichnung ist ein Ausführungsbeispiel eines Kalanders mit von außen beheizten Walzen dargestellt, und zwar zeigt Fig. 1 eine Ansicht der Walzenanordnung, teilweise geschnitten, und Fig. 2 einen Querschnitt durch die Walzen. Zwischen den beiden Hartwalzen 1 ist in bekannter Weise eine elastische Walze 7 angeordnet. Die Hartwalzen sind durch Isolierhauben 2 abgedeckt, in denen Heizstrahler 3 konzentrisch zu den Walzenoberflächen angebracht sind. Die Hartwalze 1 besteht aus dem Mantel 4, der durch eine beliebige Isolierschicht 5 von dem Walzenkern 6 getrennt ist. Beiderseitig um die Oberfläche der elastischen Walze 7 sind außerdem Wärmeisoherhauben 8 angeordnet. Die für die Temperaturregelung der Heizstrahler 3 erforderlichen Thermoelemente sind in der Zeichnung nicht dargestellt.The calender rolls described here have a low heat loss and a uniform temperature distribution and can be quickly adapted to the different speeds of the goods passing through. The drawing shows an exemplary embodiment of a calender with externally heated rolls, namely FIG. 1 shows a view of the roll arrangement, partially in section, and FIG. 2 shows a cross section through the rolls. An elastic roller 7 is arranged between the two hard rollers 1 in a known manner. The hard rolls are covered by insulating hoods 2 in which radiant heaters 3 are attached concentrically to the roll surfaces. The hard roll 1 consists of the jacket 4, which is separated from the roll core 6 by any insulating layer 5. Heat insulation hoods 8 are also arranged on both sides around the surface of the elastic roller 7. The thermocouples required for regulating the temperature of the radiant heaters 3 are not shown in the drawing.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER24994A DE1112713B (en) | 1959-02-19 | 1959-02-19 | Calender with externally heated rollers, especially for textile and paper webs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER24994A DE1112713B (en) | 1959-02-19 | 1959-02-19 | Calender with externally heated rollers, especially for textile and paper webs |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1112713B true DE1112713B (en) | 1961-08-17 |
Family
ID=7401801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER24994A Pending DE1112713B (en) | 1959-02-19 | 1959-02-19 | Calender with externally heated rollers, especially for textile and paper webs |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1112713B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1281256B (en) * | 1962-05-30 | 1968-10-24 | Karlstad Mekaniska Ab | Calender for satin finishing paper webs |
DE3600033A1 (en) * | 1985-01-04 | 1986-07-10 | Oy Wärtsilä Ab, Helsinki | METHOD FOR CALENDARING A PAPER SHEET |
DE3926028A1 (en) * | 1989-08-07 | 1991-02-14 | Vib Apparatebau Gmbh | DEVICE FOR CONTROLLING THE THICKNESS OF A MATERIAL THREAD THROUGH A ROLLER NIP |
DE3943830B4 (en) * | 1988-11-11 | 2007-03-22 | Metso Paper, Inc. | Calendering process - heating the steel roller as well as surface of elastically lined roller |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE607280C (en) * | 1934-12-20 | Johannes Spenner | Electric heating device for rollers | |
US2420399A (en) * | 1941-06-12 | 1947-05-13 | Francis H M New | Thread drier having radiant heaters and automatic control means |
-
1959
- 1959-02-19 DE DER24994A patent/DE1112713B/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE607280C (en) * | 1934-12-20 | Johannes Spenner | Electric heating device for rollers | |
US2420399A (en) * | 1941-06-12 | 1947-05-13 | Francis H M New | Thread drier having radiant heaters and automatic control means |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1281256B (en) * | 1962-05-30 | 1968-10-24 | Karlstad Mekaniska Ab | Calender for satin finishing paper webs |
DE3600033A1 (en) * | 1985-01-04 | 1986-07-10 | Oy Wärtsilä Ab, Helsinki | METHOD FOR CALENDARING A PAPER SHEET |
DE3943830B4 (en) * | 1988-11-11 | 2007-03-22 | Metso Paper, Inc. | Calendering process - heating the steel roller as well as surface of elastically lined roller |
DE3926028A1 (en) * | 1989-08-07 | 1991-02-14 | Vib Apparatebau Gmbh | DEVICE FOR CONTROLLING THE THICKNESS OF A MATERIAL THREAD THROUGH A ROLLER NIP |
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