SE428302B - PRE-SELECTION, INTENDED TO BE USED IN CALENDAR ELECTRICAL AND similar - Google Patents
PRE-SELECTION, INTENDED TO BE USED IN CALENDAR ELECTRICAL AND similarInfo
- Publication number
- SE428302B SE428302B SE8102105A SE8102105A SE428302B SE 428302 B SE428302 B SE 428302B SE 8102105 A SE8102105 A SE 8102105A SE 8102105 A SE8102105 A SE 8102105A SE 428302 B SE428302 B SE 428302B
- Authority
- SE
- Sweden
- Prior art keywords
- ring
- jackets
- flanges
- roller
- jacket
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
-
- 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
- D21F5/021—Construction of the cylinders
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Treatment Of Fiber Materials (AREA)
Description
8102105-7 bestämda vid valsens tillverkning, så att någon efterjustering med avseende på deras rundhet och centricitet icke kan ske. Ändamålet med uppfinningen är att avhjälpa dessa olägenheter genom att åstadkomma en värmevals, vilken skall vara så beskaffad, att såväl möjligheten att snabbt byta yttermanteln som justeringsmöjligheten kvarstår men ändock inga tätningsproblem föreligger. Detta har enligt upp- finningens huvudsakliga kännetecken realiserats därigenom, att tryckringen har axiellt inåtriktade flänsar, vilka via- koniska ytor så samverkar med mantlarna, att vid värmeut- vidgning hos mantlarna kontakttrycket mellan dem och flänsarna ökas genom kilverkan. * Två utföringsformer av uppfinningen beskrivs nedan med hänvisning till ritningen. 8102105-7 determined in the manufacture of the roll, so that no readjustment with respect to their roundness and centricity can take place. The object of the invention is to remedy these inconveniences by providing a heating roller, which must be of such a nature that both the possibility of quickly changing the outer jacket and the possibility of adjustment remain, but still there are no sealing problems. According to the main features of the invention, this has been realized in that the pressure ring has axially inwardly directed flanges, which via conical surfaces interact with the jackets, that upon thermal expansion of the jackets the contact pressure between them and the flanges is increased by wedge action. * Two embodiments of the invention are described below with reference to the drawing.
Fig. l visar, till största delen i sektion, en sido- vy av ena änden av en vals enligt den första utföringsformen.Fig. 1 shows, for the most part in section, a side view of one end of a roller according to the first embodiment.
Fig. 2 visar i större skala en längdsektion genom de detaljer i fig. l vilka är av direkt intresse för uppfinningen.Fig. 2 shows on a larger scale a longitudinal section through the details in Fig. 1 which are of direct interest to the invention.
Fig. 3 motsvarar fig. 2 men avser en andra utförings- form.Fig. 3 corresponds to Fig. 2 but refers to a second embodiment.
Den i fig. 1 visade valsen har vid vardera av sina gavlar en axeltapp l med en navdel la, från vilkensenare utgår ett antal radiella ekrar 2. Dessa är ihåliga och kommunicerar med en central borrning lb i axeltappen l.The roller shown in Fig. 1 has at each of its ends a shaft pin 1 with a hub part 1a, from which sensors a number of radial spokes 2 emanate. These are hollow and communicate with a central bore 1b in the shaft pin 1.
Genom denna borrning kan det värmeväxlande mediet, exempel- vis ånga, inledas i det i tvärsektion ringformade utrymme 3 som avgränsas mellan valsens innermantel 4 och yttermantel 5.Through this drilling, the heat-exchanging medium, for example steam, can be initiated in the cross-sectional annular space 3 which is delimited between the inner jacket 4 of the roller and the outer jacket 5.
Mediet genomströmmar utrymmet 3 och avgår på analogt sätt vid valsens motsatta ände. Strömningen mellan valsens båda ändar sker skruvspiralformigt, varvid detta strömnings- mönster bestäms av en skruvformad styrskena 6, som omger ett skikt 7 av värmeisolerande material utanpå innermanteln 4.The medium flows through the space 3 and departs in an analogous manner at the opposite end of the roller. The flow between the two ends of the roller takes place helically, whereby this flow pattern is determined by a helical guide rail 6, which surrounds a layer 7 of heat-insulating material on the outside of the inner jacket 4.
Det yttersta kantpartiet 4a hos innermanteln 4 är koniskt avfasat i riktning från mantelns innervägg. På mot- \ 8102105-7 svarande sätt är yttermantelns 5 kantparti koniskt avfasat i riktning från mantelns yttervägg. Dessa koniska ytor anligger mot på motsvarande sätt formade koniska ytor hos en innerfläns 8a resp. en ytterfläns 8b, vilka utgår axiellt inåt från en tryck- ring 8. Denna har ett antal runt omkretsen fördelade hål, genomgångna av skruvar 9, som står i gängingrepp med hål hos en låsring 10. Mellan de båda ringarna 8 och 10 befinner sig en packning eller tätningsring ll av elastiskt material, exempelvis gummi. Innermanteln 4 uppbär intill sin fria ände en spärring 12, som i detta fall är pågängad manteln; Mot dess, i axiell riktning räknat, inre ände anligger utsidan av en radiellt inåtriktad klack l0a hos låsringen 10. Härigenom uppnås, att vid åtdragning av skruvarna 9 tryckringen 8 kommer att röra sig axiellt inåt, varvid dess flänsar 8a och 8b med sina koniska ytor glider utmed de koniska ytorna hos mantel- partierna 4a resp. 5a. Härvid komprimeras packningen ll, så att utrymmet 3 blir avtätat gentemot omgivningen.The outermost edge portion 4a of the inner jacket 4 is conically chamfered in the direction from the inner wall of the jacket. Correspondingly, the edge portion of the outer jacket 5 is conically chamfered in the direction of the outer wall of the jacket. These conical surfaces abut against correspondingly shaped conical surfaces of an inner flange 8a resp. an outer flange 8b, which extends axially inwards from a pressure ring 8. This has a number of holes distributed around the circumference, through screws 9, which are in threaded engagement with holes of a locking ring 10. Between the two rings 8 and 10 there is a gasket or sealing ring ll of elastic material, for example rubber. The inner jacket 4 carries next to its free end a barrier 12, which in this case is threaded on the jacket; Against it, in the axial direction, inner end, the outside of a radially inwardly directed lug 10a of the locking ring 10 abuts. slides along the conical surfaces of the jacket portions 4a resp. 5a. In this case, the gasket 11 is compressed, so that the space 3 is sealed to the environment.
Valsen är alltså avsedd att arbeta med ett värme- avgivande medium, vars temperatur avsevärt överstiger om- givningens, exempelvis ånga. När ett sådant medium inleds i och genomströmmar utrymmet 3, uppvärms i första hand ytter- manteln 5, medan temperaturstegringen hos innermanteln 4 be- gränsas av det värmeisolerande skiktet 7. Yttermanteln 5 kommer härvid att värmeutvidgas, vilket ger upphov till radiellt utåt- riktade kraftkomposanter, som ökar anliggningstrycket mellan de koniska kontaktytorna hos yttermantelns ändparti 5a och tryckringens ytterfläns 8b. Ju högre temperaturen blir, desto effektivare blir alltså tätningen.The roller is thus intended to work with a heat-emitting medium, the temperature of which significantly exceeds that of the environment, for example steam. When such a medium is introduced into and flows through the space 3, the outer jacket 5 is primarily heated, while the temperature rise of the inner jacket 4 is limited by the heat-insulating layer 7. The outer jacket 5 will thereby be heat-expanded, which gives rise to radially outwardly directed force components. , which increases the abutment pressure between the conical contact surfaces of the end portion 5a of the outer jacket and the outer flange 8b of the pressure ring. The higher the temperature, the more effective the seal.
Av fig. 2 framgår, att tryckringens 8 ytterdiameter understiger motsvarande mått hos yttermanteln 5. Tryckringen kommersåledes aldrig i beröring med den motvals med vilken valsen samverkar.It can be seen from Fig. 2 that the outer diameter of the pressure ring 8 is less than the corresponding dimension of the outer jacket 5. The pressure ring thus never comes into contact with the counter-roller with which the roller cooperates.
I fig. 3 har varandra motsvarande detaljer givits sama hänvisningsbeteckningar som i fig. 2. Skillnaden mellan de båda utföringsformerna är endast att enligt fig. 3 \ uáiozflasèïå” tryckringens 8 innerfläns 8a icke är konisk utan har en cy- lindrisk insida, varvid givetvis innermantelns 4 ändparti har motsvarande form och mått. 1* De båda på ritningarna illustrerade utföringsformerna är endast avsedda att åskådliggöra principen för den lösning av täthetsproblemet vid värmevalsar vilken uppfinningen an- visar. Denna princip består alltså i en sådan utformning av de olika komponenterna, att värmeutvidgning förorsakar en ökning av kontakttrycket vid tätningsytorna i stället för - såsom fallet varit hos kända värmevalsar utan fastsvetsad yttermantel - tvärtom en minskning av detta tryck. Av det senast sagda följer bl.a., att uppfinningstanken är utnyttjad så snart denna princip tillämpas, dvs. oberoende av huruvida anliggningen mellan mantlarna och flänsarna såsom här sker direkt eller via några mellanliggande organ.In Fig. 3, corresponding details have been given the same reference numerals as in Fig. 2. The difference between the two embodiments is only that according to Fig. 3, the inner flange 8a of the pressure ring 8 is not conical but has a cylindrical inside, of course the inner jacket 4 end portion has corresponding shape and dimensions. 1 * The two embodiments illustrated in the drawings are only intended to illustrate the principle of the solution of the tightness problem in heat rollers which the invention indicates. This principle thus consists in such a design of the various components that thermal expansion causes an increase in the contact pressure at the sealing surfaces instead of - as has been the case with known heating rollers without welded outer jacket - on the contrary a reduction of this pressure. It follows from the latter that the idea of invention is utilized as soon as this principle is applied, ie. regardless of whether the abutment between the jackets and the flanges as here takes place directly or via some intermediate means.
Claims (3)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8102105A SE428302B (en) | 1981-04-01 | 1981-04-01 | PRE-SELECTION, INTENDED TO BE USED IN CALENDAR ELECTRICAL AND similar |
ZA00812071A ZA822071B (en) | 1981-04-01 | 1982-03-26 | Heating roller |
PCT/SE1982/000101 WO1982003414A1 (en) | 1981-04-01 | 1982-03-31 | Heating roller |
AU82792/82A AU8279282A (en) | 1981-04-01 | 1982-03-31 | Heating roller |
EP82901046A EP0086784A1 (en) | 1981-04-01 | 1982-03-31 | Heating roller |
AR288974A AR226261A1 (en) | 1981-04-01 | 1982-03-31 | HEATING ROLLER |
IT8267431A IT8267431A0 (en) | 1981-04-01 | 1982-04-01 | HEATING ROLLER FOR SIMILAR ROLLING MACHINES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8102105A SE428302B (en) | 1981-04-01 | 1981-04-01 | PRE-SELECTION, INTENDED TO BE USED IN CALENDAR ELECTRICAL AND similar |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8102105L SE8102105L (en) | 1982-10-02 |
SE428302B true SE428302B (en) | 1983-06-20 |
Family
ID=20343499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8102105A SE428302B (en) | 1981-04-01 | 1981-04-01 | PRE-SELECTION, INTENDED TO BE USED IN CALENDAR ELECTRICAL AND similar |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0086784A1 (en) |
AR (1) | AR226261A1 (en) |
AU (1) | AU8279282A (en) |
IT (1) | IT8267431A0 (en) |
SE (1) | SE428302B (en) |
WO (1) | WO1982003414A1 (en) |
ZA (1) | ZA822071B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19731057C1 (en) * | 1997-07-19 | 1998-08-20 | Sig Combibloc Gmbh | Rotating cylinder heat exchanger |
DE19922335C1 (en) * | 1999-05-14 | 2000-09-28 | Kuesters Beloit Gmbh & Co Kg | Calender roller has roller shell mounted to end flange rings at roller journal with anchored axial lock and defined radial play to prevent overpressure on edges of paper web |
DE102006051055A1 (en) * | 2006-10-30 | 2008-05-08 | Voith Patent Gmbh | Heated cylinder and dryer |
FI20075869L (en) * | 2007-12-03 | 2009-06-04 | Metso Paper Inc | Fiber web machine roller |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE461438C (en) * | 1926-09-10 | 1928-06-22 | Robert Schaefer | Steel roller for rolling ribbed iron |
SE313732B (en) * | 1965-01-21 | 1969-08-18 | Skandinaviska Apparatind | |
BE827880A (en) * | 1975-04-11 | 1975-10-13 | ROLLER CYLINDER | |
DE2814244C2 (en) * | 1978-04-03 | 1985-01-10 | Kleinewefers Gmbh, 4150 Krefeld | Hollow roller with coaxially built-in displacement body |
-
1981
- 1981-04-01 SE SE8102105A patent/SE428302B/en not_active IP Right Cessation
-
1982
- 1982-03-26 ZA ZA00812071A patent/ZA822071B/en unknown
- 1982-03-31 AR AR288974A patent/AR226261A1/en active
- 1982-03-31 EP EP82901046A patent/EP0086784A1/en not_active Withdrawn
- 1982-03-31 AU AU82792/82A patent/AU8279282A/en not_active Abandoned
- 1982-03-31 WO PCT/SE1982/000101 patent/WO1982003414A1/en unknown
- 1982-04-01 IT IT8267431A patent/IT8267431A0/en unknown
Also Published As
Publication number | Publication date |
---|---|
ZA822071B (en) | 1983-02-23 |
SE8102105L (en) | 1982-10-02 |
AU8279282A (en) | 1982-10-19 |
IT8267431A0 (en) | 1982-04-01 |
EP0086784A1 (en) | 1983-08-31 |
WO1982003414A1 (en) | 1982-10-14 |
AR226261A1 (en) | 1982-06-15 |
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