SE452996B - Paper strip cooling prevention in wet part of machine - Google Patents

Paper strip cooling prevention in wet part of machine

Info

Publication number
SE452996B
SE452996B SE8406124A SE8406124A SE452996B SE 452996 B SE452996 B SE 452996B SE 8406124 A SE8406124 A SE 8406124A SE 8406124 A SE8406124 A SE 8406124A SE 452996 B SE452996 B SE 452996B
Authority
SE
Sweden
Prior art keywords
air
machine
wet part
suction boxes
over
Prior art date
Application number
SE8406124A
Other languages
Swedish (sv)
Other versions
SE8406124D0 (en
SE8406124L (en
Inventor
O P Terland
Original Assignee
Svenska Traeforskningsinst
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 Svenska Traeforskningsinst filed Critical Svenska Traeforskningsinst
Priority to SE8406124A priority Critical patent/SE452996B/en
Publication of SE8406124D0 publication Critical patent/SE8406124D0/en
Priority to AU50233/85A priority patent/AU571756B2/en
Publication of SE8406124L publication Critical patent/SE8406124L/en
Publication of SE452996B publication Critical patent/SE452996B/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/008—Steam showers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/003—Indicating or regulating the moisture content of the layer
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G7/00—Damping devices

Abstract

The wet part of the machine is surrounded by an atmosphere of hot, moist air. Hot moist air enters via to the air extraction devices are over the felt suction boxes, over the box and over the dry suction boxes.

Description

15 20 452 996 fuktig luft som enligt uppfinningen lades till en huv eller låda, 16, anordnad över hela våtpartiet. 452,996 moist air which according to the invention was added to a hood or box, 16, arranged over the entire wet part.

Figur 2 visar på samma sätt en pappersmaskin där hänvisningsbeteck- ningarna motsvarar samma ritníngsdetaljer som i figur 1. Enligt detta arrangemang har luftlådan i figur 1 över hela våtpartiet ersatts med separata luftlådor för ett antal luftgenomsugande element. Detta är i ritningen markerat genom att ledningen, 15, för varm, fuktig luft kan ledas till ett eller flera av de luftgenomsugande elementen 17-22. Av dessa element avser 17 luftlåda över de torra suglådorna 2, beteckningen 18 en luftlåda över guskvalsen 3 samt 19, 20 och 21 lådor över filtsug- lådorna. Med beteckningen 22 har dessutom angivits en luftlåda för sug- pressvalsen, 6.Figure 2 similarly shows a paper machine where the reference numerals correspond to the same drawing details as in Figure 1. According to this arrangement, the air box in Figure 1 has been replaced over the entire wet section by separate air boxes for a number of air-absorbing elements. This is marked in the drawing by the fact that the duct, 15, for hot, humid air can be led to one or more of the air-absorbing elements 17-22. Of these elements, 17 refer to an air box over the dry suction boxes 2, the designation 18 an air box over the goose roll 3 and 19, 20 and 21 boxes over the felt suction boxes. The designation 22 also indicates an air box for the suction press roller, 6.

Genom att ta till vara den varma, fuktiga luft som det finns rik- ligt av ifrån torkpartiet och föra den till våtändan kan det önskade tillståndet av energirik, omgivande luft enligt uppfinningen erhållas.By utilizing the warm, humid air that is abundant from the drying section and leading it to the wet end, the desired state of energy-rich, ambient air according to the invention can be obtained.

Denna fuktiga luft kan, såsom beskrivits, tillföras genom en luftlåda som antingen kan täcka hela våtpartiet eller speciellt de delar som är ut- satta för kraftig avkylning, såsom torra suglådor, filtsuglådor och i synnerhet guskvals.This moist air can, as described, be supplied through an air box which can either cover the entire wet part or especially the parts which are exposed to strong cooling, such as dry suction boxes, felt suction boxes and in particular goose roll.

Uppfinningen är icke begränsad till de visade utföringsformerna, utan kan varieras inom ramen för uppfinningstanken.The invention is not limited to the embodiments shown, but can be varied within the scope of the inventive concept.

Claims (2)

z 452 996 P a t e n t k r a vz 452 996 P a t e n t k r a v 1. Sätt att förhindra avkylning av pappersbanor i en pappersmaskíns vâtparti och därigenom underlätta banans avvattníng och erhålla en högre presstorrhalt, k ä n n e t e c k n a t av att våtpartiet (16) eller delar därav, t ex torra suglådor (17), filtsuglådor (19, 20, 21) och gusk- vals (3), omges med en atmosfär av varm, fuktig luft, som tillfüres en över våtpartiet eller delar därav anordnad luftlåda.A method of preventing cooling of paper webs in the wet portion of a paper machine and thereby facilitating the dewatering of the web and obtaining a higher press dry content, characterized in that the wet portion (16) or parts thereof, e.g. dry suction boxes (17), felt suction boxes (19, 20, 21) and gusk roller (3), surrounded by an atmosphere of hot, humid air, which is supplied to an air box arranged above the wet part or parts thereof. 2. Sätt enligt kravet 1, k ä n n e t e c k n a t av_att luften tillföras från pappersmaskinens torkparti (9).2. A method according to claim 1, characterized in that the air is supplied from the drying section of the paper machine (9).
SE8406124A 1984-12-04 1984-12-04 Paper strip cooling prevention in wet part of machine SE452996B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8406124A SE452996B (en) 1984-12-04 1984-12-04 Paper strip cooling prevention in wet part of machine
AU50233/85A AU571756B2 (en) 1984-12-04 1985-11-21 Feeding powdered coal to a burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8406124A SE452996B (en) 1984-12-04 1984-12-04 Paper strip cooling prevention in wet part of machine

Publications (3)

Publication Number Publication Date
SE8406124D0 SE8406124D0 (en) 1984-12-04
SE8406124L SE8406124L (en) 1986-06-05
SE452996B true SE452996B (en) 1988-01-04

Family

ID=20358025

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8406124A SE452996B (en) 1984-12-04 1984-12-04 Paper strip cooling prevention in wet part of machine

Country Status (2)

Country Link
AU (1) AU571756B2 (en)
SE (1) SE452996B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR205948A1 (en) * 1974-11-02 1976-06-15 Ofner M APPARATUS INTENDED FOR FEEDING POWDER TO A POWDER PROCESSING FACILITY
US4832539A (en) * 1983-04-20 1989-05-23 The Babcock & Wilcox Company Distribution of gas entrained particles

Also Published As

Publication number Publication date
AU5023385A (en) 1986-06-12
AU571756B2 (en) 1988-04-21
SE8406124D0 (en) 1984-12-04
SE8406124L (en) 1986-06-05

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