CA2332677A1 - Device and method for ventilating an offset pocket space in a papermaking machine - Google Patents

Device and method for ventilating an offset pocket space in a papermaking machine Download PDF

Info

Publication number
CA2332677A1
CA2332677A1 CA 2332677 CA2332677A CA2332677A1 CA 2332677 A1 CA2332677 A1 CA 2332677A1 CA 2332677 CA2332677 CA 2332677 CA 2332677 A CA2332677 A CA 2332677A CA 2332677 A1 CA2332677 A1 CA 2332677A1
Authority
CA
Canada
Prior art keywords
felt
air
cylinders
pocket space
cleft
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
Application number
CA 2332677
Other languages
French (fr)
Other versions
CA2332677C (en
Inventor
Normand Boucher
Jean Desharnais
Dominique Thifault
Remi Turcotte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Enerquin Air Inc
Original Assignee
Enerquin Air Inc
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 Enerquin Air Inc filed Critical Enerquin Air Inc
Priority to CA 2332677 priority Critical patent/CA2332677C/en
Priority to CA 2369401 priority patent/CA2369401C/en
Publication of CA2332677A1 publication Critical patent/CA2332677A1/en
Application granted granted Critical
Publication of CA2332677C publication Critical patent/CA2332677C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
    • 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
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
    • D21F5/046—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices using pocket ventilation systems

Abstract

The device (10) and method are used for ventilating an offset pocket space (12) located in a drying section of a papermaking machine by injecting air from a t least one heated dry air supply inlet (11). The offset pocket space (12) is situat ed between three axially-parallel drying cylinders (20) over which consecutivel y runs a paper web (14). A first and a third of these cylinders (20) are vertically spaced from a second one. The paper web (14) is pressed against the first and the third cylinder (20) by a felt (16) which further runs around a felt roll (26) havi ng a rotation axis parallel to that of the cylinders (20). The felt roll (26) is disposed between the three cylinders (20) in an offset position which is closer to th e first cylinder (20) than the third cylinder (20). The device (10) comprises a first air outlet (50) where a first air stream i s directed into a cleft (30) defined where the felt (16) and the felt roll (26) join, a nd a second air outlet (52) where a second air stream is directed in close proximity of the felt (16) at a location which is upstream the cleft (30). The second air stream i s in a direction which is substantially opposite the running direction (R) of the felt (16). In use, the device (10) and the corresponding method allows the first air strea m to flow throughthe felt (16) and to lift the paper web (14) away from the felt (16) so as to reach the offset pocket space (12). The second air stream creates an a ir curtain to lower the pressure in a zone between the first (50) and the secon d (52) air outlet, thereby establishing a zone of reduced air pressure in close proximity of the felt (16) at a location which is immediately upstream the cleft (30).</S DOAB>
CA 2332677 2001-01-30 2001-01-31 Device and method for ventilating an offset pocket space in a papermaking machine Expired - Lifetime CA2332677C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA 2332677 CA2332677C (en) 2001-01-31 2001-01-31 Device and method for ventilating an offset pocket space in a papermaking machine
CA 2369401 CA2369401C (en) 2001-01-30 2002-01-28 Device and method for ventilating an offset pocket space in a papermaking machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2332677 CA2332677C (en) 2001-01-31 2001-01-31 Device and method for ventilating an offset pocket space in a papermaking machine

Publications (2)

Publication Number Publication Date
CA2332677A1 true CA2332677A1 (en) 2002-07-31
CA2332677C CA2332677C (en) 2006-09-19

Family

ID=4168205

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2332677 Expired - Lifetime CA2332677C (en) 2001-01-30 2001-01-31 Device and method for ventilating an offset pocket space in a papermaking machine

Country Status (1)

Country Link
CA (1) CA2332677C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160222589A1 (en) * 2015-01-30 2016-08-04 Enerquin Air Inc. Pocket ventilator device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160222589A1 (en) * 2015-01-30 2016-08-04 Enerquin Air Inc. Pocket ventilator device and method
US9605381B2 (en) 2015-01-30 2017-03-28 Enerquin Air Inc. Pocket ventilator device and method

Also Published As

Publication number Publication date
CA2332677C (en) 2006-09-19

Similar Documents

Publication Publication Date Title
JPS61245394A (en) Method for acting negative pressure on fan shaped part of suction roll and suction roll
CA2362186A1 (en) Method and apparatus in the drying section of a paper machine or the like
AU4268599A (en) Integrated paper machine
CA2097847A1 (en) Method and device for intensifying the operation of a yankee press in a soft-tissue paper machine
CA2396551A1 (en) Seal arrangement for through-air drying papermaking machine
CA1308552C (en) Dryer section apparatus
DK1290252T3 (en) Modified worker operation by textile mapping
JPH03130490A (en) Method and device for guiding paper web in coating device
CA2095461A1 (en) Method and apparatus for eliminating the flutter of a paper web in the dryer section of a papermaking machine between two single felt configurations therein
CA1316668C (en) Pocket ventilator
CA2332677A1 (en) Device and method for ventilating an offset pocket space in a papermaking machine
CA2369401A1 (en) Device and method for ventilating an offset pocket space in a papermaking machine
FI20000387A0 (en) Method and apparatus for arranging the discharge and supply of air in the dryer section
CA2269360A1 (en) Duct configuration for a through-air drying apparatus in a papermaking machine
ATE229590T1 (en) PRESS PARTY
US20010029682A1 (en) Method for blowing steam against paper web, and steam box of paper machine
FI20035149A (en) Paper / board web coating machine
FI954735A (en) Procedure and apparatus for pointing a paper web
FI122337B (en) Method and apparatus for tip drawing in the dryer section of a web forming machine
FI991393A (en) A method of guiding the web between calender roll nipples and a calender
CA2190563A1 (en) Device and method to stabilize sheet between press section and dryer section of a paper-making machine
AU4786699A (en) Method and device for drying of a coated web
JP2004513255A5 (en) Structure related to Yankee cylinder etc. and roller of paper machine
EP1057932A3 (en) Blow pipe tail threading system for paper-making machines
EP1337708B8 (en) Arrangement in connection with a yankee cylinder or the like and a reel-up of a paper machine

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20210201