FI961612A - The suction cylinder of the paper dryer and the drying unit that applies it - Google Patents

The suction cylinder of the paper dryer and the drying unit that applies it Download PDF

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Publication number
FI961612A
FI961612A FI961612A FI961612A FI961612A FI 961612 A FI961612 A FI 961612A FI 961612 A FI961612 A FI 961612A FI 961612 A FI961612 A FI 961612A FI 961612 A FI961612 A FI 961612A
Authority
FI
Finland
Prior art keywords
zone
suction cylinder
suction
zones
underpressure
Prior art date
Application number
FI961612A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI102912B (en
FI961612A0 (en
FI102912B1 (en
Inventor
Kari Juppi
Original Assignee
Valmet Corp
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 Valmet Corp filed Critical Valmet Corp
Priority to FI961612A priority Critical patent/FI102912B1/en
Publication of FI961612A0 publication Critical patent/FI961612A0/en
Publication of FI961612A publication Critical patent/FI961612A/en
Application granted granted Critical
Publication of FI102912B publication Critical patent/FI102912B/en
Publication of FI102912B1 publication Critical patent/FI102912B1/en

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Suction cylinder 20; 20A; 20C; 20C for drying arrangements for paper, said suction cylinder containing a cylindrical surface 21 with through-perforation 22 and ends connected to it. Shaft pivots are joined to this, supported by which the suction cylinders 20; 20A; 20B; 20C are arranged to rotate. With a suction chamber arrangement 24, 25, 26, 27, which is arranged within the cylinder surface 21, the surface 21 of the suction cylinder 20; 20A; 20B; 20C is divided into at least two different zones 30A, 30B, 30C. At least one of these zones is a suction zone connected to an underpressure pa and one is essentially a zone without a pressure difference or a zone 30C with lower underpressure pb. The first relatively short L zones 30A of the mentioned zone 30A, 30B, 30C is a zone with effective underpressure pa which is placed on the area of the wedge-like entry nip CN which closes against the paper web W being dried supported by the drying screen 11 and its outer surface which reaches said suction cylinder 20; 20A; 20B; 20C. The other zone/zones 30B with lower underpressure pb is/are arranged at least in the sector d of the suction cylinder in which the drying screen 11 and the paper web W together bend over said suction cylinder 20; 20A; 20B; 20C. <IMAGE>
FI961612A 1996-04-12 1996-04-12 Suction cylinder for drying arrangements for paper and drying unit for application of it FI102912B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI961612A FI102912B1 (en) 1996-04-12 1996-04-12 Suction cylinder for drying arrangements for paper and drying unit for application of it

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI961612 1996-04-12
FI961612A FI102912B1 (en) 1996-04-12 1996-04-12 Suction cylinder for drying arrangements for paper and drying unit for application of it

Publications (4)

Publication Number Publication Date
FI961612A0 FI961612A0 (en) 1996-04-12
FI961612A true FI961612A (en) 1997-10-13
FI102912B FI102912B (en) 1999-03-15
FI102912B1 FI102912B1 (en) 1999-03-15

Family

ID=8545830

Family Applications (1)

Application Number Title Priority Date Filing Date
FI961612A FI102912B1 (en) 1996-04-12 1996-04-12 Suction cylinder for drying arrangements for paper and drying unit for application of it

Country Status (1)

Country Link
FI (1) FI102912B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6418639B1 (en) 1997-10-03 2002-07-16 Metso Paper, Inc. Method and device in the dryer section of a paper/board machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6418639B1 (en) 1997-10-03 2002-07-16 Metso Paper, Inc. Method and device in the dryer section of a paper/board machine

Also Published As

Publication number Publication date
FI102912B (en) 1999-03-15
FI961612A0 (en) 1996-04-12
FI102912B1 (en) 1999-03-15

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