EP1029976A1 - Walze - Google Patents
Walze Download PDFInfo
- Publication number
- EP1029976A1 EP1029976A1 EP99103084A EP99103084A EP1029976A1 EP 1029976 A1 EP1029976 A1 EP 1029976A1 EP 99103084 A EP99103084 A EP 99103084A EP 99103084 A EP99103084 A EP 99103084A EP 1029976 A1 EP1029976 A1 EP 1029976A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- condensate
- condensation
- riser
- channels
- 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
Links
Images
Classifications
-
- 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
- D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/10—Removing condensate from the interior of the cylinders
Definitions
- the invention relates to a roller according to the preamble of claim 1.
- rollers are used for machining and processing in tensionable webs processing materials used, for example for textile, plastic and in particular Paper webs.
- the field of application of such rollers, which in different Dimensioning is therefore the area of industrial production, in particular the coloring, embossing or printing of the above Tracks.
- the heating is carried out as evenly as possible over the circumference of the roller to avoid thermal stress.
- Such rollers therefore have special features advantageous peripheral channels, which are distributed side by side over the circumference of the roller are arranged. These essentially follow the axial course of the roller and can vary in number depending on the dimensioning Roll be provided.
- a heating medium is passed through the channels can be designed differently depending on the application.
- Condensate risers provided this in a central, the pin of the roller penetrating discharge duct. This is a significant one Pressure difference required, that of the centrifugal force acting on the condensate counteracts during the rotation of the roller. This is the condensate drain difficult. In addition, the corresponding condensate risers can become blocked come.
- the invention is based on the problem of removing the condensate from the circumferential side Improve heating channels.
- the number of condensate risers is particularly advantageous compared to the axial ones Channels reduced and the cross-section of the condensate risers enlarged. With the enlarged cross section reduces the risk of blockage of the condensate risers, condensate drainage is faster and more reliable.
- the injector nozzle is particularly advantageously controllable, so that the respective roller dimensions and / or speed of rotation correspondingly adapted addition of slip steam can occur.
- the roller 1 is at least one-sided (in the exemplary embodiment on both sides) with flange pins 2 and 3. On at least one the flange pin 2, 3 can attack a drive for the roller 1.
- the roller 1 has a roller body 4 in the central area, which has the flange pins 2 and 3 facing ends by screwable and heat-insulating Lid 5, 6 can be closed.
- the roller 1 is over a heating medium, in particular a vaporous heating medium such as water vapor, heatable.
- a heating medium in particular a vaporous heating medium such as water vapor, heatable.
- FIG. 2 via the The circumference of the roller body 4 is spaced apart and essentially distributed axially extending channels 8 are provided, through which the heating medium is conducted in order to thus heat the outer surface 4a as well as possible to reach the roller body 4.
- the axial channels 8 extend almost over the entire length of the roller body 4 and conduct the heating medium, in particular the water vapor, axially to the course of the roller body 4 through it.
- the condensate that forms is in annular, concentric to the roller axis 9 extending Collection rooms 10, 11, 12, 13 collected, with the collection rooms 10 and 11 on the side of the roller 1 facing the pin 2, which have a discharge channel 16 for the condensate. That collected in the collection rooms 12 and 13 By contrast, condensate is passed through further axial channels 14 of the opposite one Roll side fed. There it becomes in the annular space 11 collected, as well as the collecting space 10 located on the same side is connected to a condensate riser 15.
- the condensate riser 15 extends in a radial alignment with the central one Condensate drainage duct 16. Therefore, the annular collecting space on this side opens out 10 via an intermediate channel 10a in the condensate riser 15 as well the opposite collection rooms 12, 13 above that on a second pitch circle lying, axial channel 14 and the annular plenum 11. Inside the condensate riser 15 prevails to overcome those acting on the condensate and this centrifugal force pressing against the outer surface 4a of the roller body a pressure difference, with the help of which the condensate has a central effect Experienced force component that allows removal through the central channel 16.
- the condensate riser 15 is used to supply the slip steam Provide injector nozzle17.
- the slip vapor becomes concentric over one ring channel 18 lying to the central discharge channel 16 is introduced into the roller, then fed via a riser pipe 19 to a control valve 20 before it Injector nozzle 17 is introduced into the condensate riser.
- the control valve 20 can either manually or remotely. The amount of slip steam injected can therefore be regulated depending on the speed and the heating medium used become.
- each of the condensate risers there is a correspondingly acute and the axis 9 of the roller 1 facing an injector nozzle 17 for the Hatching steam.
- 4 balancing weights 26 can be mounted on the edge of the roller body with the lids 5 and 6 in connection and via adjusting screws or the like can be readjusted at any time. A static as well as dynamic Balancing the roller 1 is thereby facilitated. By changing the Screw-in angle of the screw can result in a corresponding redistribution of the balance weight 26 can be made.
- a roller 1 designed as a heat exchanger is created, due to the fact that the slip vapor can be fed into the riser pipe 15 and the small number of condensate risers 15 with a single annular plenum 10, with which all heating channels 8 are connected, is connected, an optimized implementation of the heating medium, especially water vapor, enabled by the roller 1.
- a very even temperature profile is achieved so that the deformation of the roller 1 remains small. Due to the controllability and adjustability via the valve 20, the injection of slip steam depending on Carry out requirements so that its consumption is low and easy to dose is.
- the problem of a blockage of the condensate return lines due to small cross-sections and the problem of a very high pressure difference to be applied are largely eliminated.
Landscapes
- Drying Of Solid Materials (AREA)
- Paper (AREA)
Abstract
Description
- Figur 1
- eine Draufsicht auf eine erfindungsgemäße Walze,
- Figur 2
- die Walze nach Fig. 1 im Längsschnitt,
- Figur 3
- die Einzelheit III in Fig. 2,
- Figur 4
- die Einzelheit IV in Fig. 2,
- Figur 5
- eine schematische Querschnittsansicht im Bereich etwa einer Schnittebene V-V in Fig. 2.
- 1
- Walze
- 2
- Flanschzapfen
- 3
- Flanschzapfen
- 4
- Walzenkörper
- 4a
- Außenfläche
- 5
- Deckel
- 6
- Deckel
- 8
- Kanäle
- 9
- Walzenachse
- 10
- Sammelraum
- 10a
- Zwischenkanal
- 11
- Sammelraum
- 12
- Sammelraum
- 13
- Sammelraum
- 14
- Kanäle
- 15
- Kondensatsteiger
- 16
- Abführungskanal
- 17
- Injektordüse
- 18
- Ringkanal
- 19
- Steigrohr
- 20
- Regelventil
- 25
- Kondensatsteiger
- 26
- Auswuchtgewichte
Claims (6)
- Walze (1) zum Einsatz bei in spannbaren Bahnen zu verarbeitenden Werkstoffen, wie etwa in der Papierindustrie, wobei die Walze (1) mit einem Heizmedium, insbesondere Wasserdampf, beaufschlagbar ist, daß in die Walze (1) einleitbar und in über den Walzenumfang verteilt angeordneten, im wesentlichen axialen Kanälen (8) über die Walzenerstreckung transportierbar ist, wobei die Kanäle (8) zumindest einen Ends in einen gemeinsamen, im wesentlichen ringförmigen Kondensatsammelraum (10 bis 13) münden, von dem sich zumindest ein Kondensatsteiger (15) zu einem axialen Kondensatabführungskanal (16) erstreckt, wobei dem Kondensatsteiger (15) eine Injektordüse (17) zur Einleitung von Schlupfdampf in den Kondensatsteiger (15) zugeordnet ist.
- Walze nach Anspruch 1,
dadurch gekennzeichnet,
daß die Injektordüse (17) in spitzem Winkel gegenüber dem Kondensatsteiger (15) angeordnet ist und eine axiale Komponente der Injektionsrichtung aufweist. - Walze nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet,
daß die Zahl der Kondensatsteiger (15) gegenüber der Zahl der axialen Kanäle (8) verringert ist. - Walze nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß ein bis vier Kondensatsteiger (15) einem Kondensatsammelraum (10) zugeordnet sind. - Walze nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß die Injektordüse (17) hinsichtlich ihrer Schlupfdampfeinleitung regelbar ist. - Walze nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß die Walze (1) einen Walzenkörper (4) aufweist, der stirnseitig zumindest einen Ends von einem Zapfen überragt wird und daß der Walzenkörper (4) stirnseitig von aufschraubbaren Wärmeisolationsdeckeln (5, 6) begrenzt ist.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT99103084T ATE221154T1 (de) | 1999-02-17 | 1999-02-17 | Walze |
EP99103084A EP1029976B1 (de) | 1999-02-17 | 1999-02-17 | Walze |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99103084A EP1029976B1 (de) | 1999-02-17 | 1999-02-17 | Walze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1029976A1 true EP1029976A1 (de) | 2000-08-23 |
EP1029976B1 EP1029976B1 (de) | 2002-07-24 |
Family
ID=8237567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99103084A Expired - Lifetime EP1029976B1 (de) | 1999-02-17 | 1999-02-17 | Walze |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1029976B1 (de) |
AT (1) | ATE221154T1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102400409A (zh) * | 2011-09-28 | 2012-04-04 | 大连明珠机械有限公司 | 纸机压光机用热压光辊 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4407239A1 (de) * | 1994-03-04 | 1995-09-07 | Schwaebische Huettenwerke Gmbh | Dampfbeheizte Walze |
EP0768424A2 (de) * | 1995-10-13 | 1997-04-16 | Schwäbische Hüttenwerke GmbH | Heizwalze |
-
1999
- 1999-02-17 EP EP99103084A patent/EP1029976B1/de not_active Expired - Lifetime
- 1999-02-17 AT AT99103084T patent/ATE221154T1/de not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4407239A1 (de) * | 1994-03-04 | 1995-09-07 | Schwaebische Huettenwerke Gmbh | Dampfbeheizte Walze |
EP0768424A2 (de) * | 1995-10-13 | 1997-04-16 | Schwäbische Hüttenwerke GmbH | Heizwalze |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102400409A (zh) * | 2011-09-28 | 2012-04-04 | 大连明珠机械有限公司 | 纸机压光机用热压光辊 |
Also Published As
Publication number | Publication date |
---|---|
ATE221154T1 (de) | 2002-08-15 |
EP1029976B1 (de) | 2002-07-24 |
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