US3351523A - Roller face suction box for paper-making machine - Google Patents

Roller face suction box for paper-making machine Download PDF

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Publication number
US3351523A
US3351523A US369262A US36926264A US3351523A US 3351523 A US3351523 A US 3351523A US 369262 A US369262 A US 369262A US 36926264 A US36926264 A US 36926264A US 3351523 A US3351523 A US 3351523A
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US
United States
Prior art keywords
roller
rollers
fixed supports
spaced
suction
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.)
Expired - Lifetime
Application number
US369262A
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English (en)
Inventor
Maupas Jean-Pierre
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Individual
Original Assignee
Individual
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
Priority claimed from FR935324A external-priority patent/FR84016E/fr
Priority claimed from FR958102A external-priority patent/FR85009E/fr
Priority claimed from FR973907A external-priority patent/FR85722E/fr
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3351523A publication Critical patent/US3351523A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0272—Wet presses 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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/50—Suction boxes with rolls

Definitions

  • This invention relates to apparatus employed in the extraction or absorption of water from paper pulp, the apparatus being associated with paper pulp processing machinery of the type including a pulp conveying belt and plural roller means.
  • the main object of the invention is to enable most of the water contained in paper pulp to be absorbed after it has undergone preparatory operations.
  • Another object of the invention is to create a depression in a chamber defined by sets of contact rollers, so as to extract the water contained in the paper pulp.
  • Another object of the invention is to make the rollers mobile forming the depression chamber, so as to increase or restrict the entrance to this chamber, to adapt the depression to the amount of material transported.
  • Another object of the invention is to impart profiles to the ends of the rollers and their fixed parts, so that they can overlap in order to reduce surface contact to a minimum to reduce unecessary wear.
  • Another object of the invention consists of the production of a carrier roller of larger size than the rollers forming the depression chamber, so as to obtain a better wringing of the paper pulp and also ensure the cleaning of the felt passing between the presser roller and the upper carrier roller.
  • a device according to the invention is shown by way of non-resistrictive example in the attached figures, in which:
  • FIGURE 1 is a cross sectional view taken axially through one of the rollers carrying material according to the invention
  • FIGURE 2 shows a front view of the fixed support and the two small bars on which the belt rubs is engaged outside the two upper rollers.
  • FIGURE 3 is a diagrammatical view showing the appreciable difference existing between the volume of the presser roller and the upper carrier roller compared with the volume of the upper rollers forming the depression chamber,
  • FIGURE 4 is a partial view of the device, the latter comprising a lower roller provided with an antifriction ring,
  • FIGURE 5 is a longitudinal sectional view of the aforesaid lower roller
  • FIGURES 6 and 7 are end and elevation views of the device according to an alternative embodiment.
  • the suction box according to the invention is defined in part by a pair of fixed supports 26, each of which is provided with two sets of concentric grooves 1 and 2 surrounding a central recess 3 and defining annular profiles 32 and 33.
  • a pair of rollers 28 are supported between the fixed supports 26 for rotation about their longitudinal axes and each roller includes a cylindrical main body 5 having opposite reduced end portions 6 which present outwardly facing annular shoulders 27.
  • each face of each roller is provided with annular projections 7 and 8 and a central hub 9 separated by annular grooves 30 and 31 and received respectively ice in the corresponding grooves 1 and 2 and central recess 3 of the corresponding support 26, but spaced radially and axially from the fixed support, as shown in FIG. 1, to present a labrynth passage 10.
  • Sealing belts 14 are trained over the corresponding reduced ends 6 of the rollers 28 and are of slightly less width than the spacing between the outwardly facing shoulders 27 and the inner faces of the corresponding fixed supports 26.
  • the inner faces of the fixed supports present shoulder portions 29 lying closely adjacent the outer sides of the belts 14.
  • the labrynth passages are filled with water to seal between the end faces of the rollers 28 and the fixed supports 26 and to prevent wear therebetween.
  • the rollers 28 define a suction gap 11 therebetween, located as shown in FIG. 2, for passage of a span of a traveling felt F (see FIG. 1) thereover.
  • the side boundaries of this gap are defined by the belts 14 which contact and move along with the opposite underside edges of the felt F.
  • One or both of the fixed supports 26 is provided with an opening 12 for the connection to the usual suction pump whereby the region R beneath the span of the traveling felt is subjected to negative pressure.
  • the bottom of the box between the rollers 28 may be sealed in any suitable fashion as, for example, by having the lower bars 34 joined by a sealing plate, not shown. In FIG. 6, the roller 28' provides this function.
  • the belts serve the dual function of sealing the labrynth passages and providing the side boundaries of the suction gap. Actually, the rollers and supports not being under friction, the braking action of the rollers (which might interfere with the proper working of the device) is restricted to its smallest extent.
  • the belt 14 is made in such width that there is a very slight play between it and the shoulder-piece 27 of the support, the small bars 34 against which it rubs having a tendency to return it against the shoulder-piece of the roller 28.
  • the present invention also provides a pressure roller 35 placed over the upper rollers 28.
  • This presser roller 35 is pressed on one of the upper rollers 28 by a spring 36, which enables a variable pressure to be obtained that can be regulated between the pressure roller and the upper roller on which it bears.
  • the pressure roller 35 is made of large size, so that its own weight ensures considerable pressure on the carrier roller 28, which is also of large size so as to be able to stand this pressure.
  • rollers 28, forming, with the roller 28, the depression chamber are made smaller so that they can be easily moved.
  • the displacement of these rollers 28 is an angular one in relation to the axis of the upper carrier roller 28'.
  • FIGURE 3 shows a different position by dotted lines of the rollers 28 and 28', in the present case, the entrance to the depression chamber being restricted.
  • This particular arrangement enables the felt and paper pulp itself to be passed on the depression chamber, so as on the one hand-to clean the felt, and-on the other -the better to dry the paper pulp.
  • the lower carrier roller 28' of the device comprises, at each of its lateral ends, a ring 40 of plastic material by which contact is made between the lower carrier roller 28 and the belt passing over the upper roller 28 and 28
  • the ring 40 is placed around a bronze bushing 41 pro- 3 vided at each of the lateral ends of the roller 28 on which it freely revolves.
  • the rings 40 compensate for the slight difierence of speed which exists between said lower carrier roller and the belt joint.
  • the seal-tight belts 14 at the ends of the rollers pass under the lower carrier roller 28' i.e., they envelop the three rollers.
  • each roller having a cylindrical main body and reduced end portions at its opposite ends presenting outwardly facing annular shoulders, and each such end portion terminating in an end face having radially spaced annular projections thereon disposed concentrically of the rotational axis of the roller with the projections on said rollers extending into corresponding grooves in said fixed supports to provide labrynth passages,
  • each fixed support having shoulder portions disposed in spaced, aligned opposition with respect to a corresponding roller shoulder
  • each belt being of a Width slightly less than the spacing between the corresponding shoulder portions of the fixed supports and said roller shoulders.
  • suction chamber defining means comprises a third roller in tangential contact with both of said pair of rollers, said endless belts each being trained over all three rollers.
  • said third roller has reduced end portions corresponding to the reduced end portions of said pair of rollers with which it is in contact, and a ring of antifriction material journaled on each reduced end of said third roller and in contact with a corresponding endless belt.

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  • Paper (AREA)
  • Making Paper Articles (AREA)
  • Drying Of Solid Materials (AREA)
US369262A 1963-05-18 1964-05-21 Roller face suction box for paper-making machine Expired - Lifetime US3351523A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR935324A FR84016E (fr) 1959-05-09 1963-05-18 Dispositif pour l'essorage de la pâte à papier ou applications similaires
FR958102A FR85009E (fr) 1959-05-09 1963-12-21 Dispositif pour l'essorage de la pâte à papier ou applications similaires
FR973907A FR85722E (fr) 1959-05-09 1964-05-09 Dispositif pour l'essorage de la pâte à papier ou applications similaires

Publications (1)

Publication Number Publication Date
US3351523A true US3351523A (en) 1967-11-07

Family

ID=27247230

Family Applications (1)

Application Number Title Priority Date Filing Date
US369262A Expired - Lifetime US3351523A (en) 1963-05-18 1964-05-21 Roller face suction box for paper-making machine

Country Status (6)

Country Link
US (1) US3351523A (enrdf_load_html_response)
AT (1) AT279333B (enrdf_load_html_response)
BE (1) BE648096A (enrdf_load_html_response)
DE (1) DE1291982B (enrdf_load_html_response)
GB (1) GB1018042A (enrdf_load_html_response)
NL (1) NL6405421A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291834A1 (fr) * 1974-11-20 1976-06-18 Hemag Maschinenbau Raboteuse de finition pour l'usinage de bois

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1183273A (en) * 1915-08-18 1916-05-16 Arthur E Binns Suction-box for paper-machines and the like.
DE580972C (de) * 1929-11-19 1933-07-25 F H Banning & Seybold Maschb G Rundsiebentwaesserungsmaschine oder umlaufender Knotenfaenger fuer die Papier- und Holzstoffherstellung
US1950853A (en) * 1932-05-20 1934-03-13 E & M Lamort Fils Soc Suction box for the manufacture of paper and similar products
DE1000679B (de) * 1954-04-14 1957-01-10 Millspaugh Ltd Presswalzensatz fuer Papiermaschinen
US2780968A (en) * 1951-09-01 1957-02-12 Beloit Iron Works Paper-making machines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE534870C (de) * 1928-08-11 1932-03-31 Eugen Kutter Walzensauger fuer Papiermaschinen
GB768198A (en) * 1954-03-24 1957-02-13 Escher Wyss Gmbh Improvements in and relating to apparatus for drying webs of pulp
FR1226039A (fr) * 1959-05-09 1960-07-06 Dispositif pour l'essorage de la pâte à papier ou applications similaires

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1183273A (en) * 1915-08-18 1916-05-16 Arthur E Binns Suction-box for paper-machines and the like.
DE580972C (de) * 1929-11-19 1933-07-25 F H Banning & Seybold Maschb G Rundsiebentwaesserungsmaschine oder umlaufender Knotenfaenger fuer die Papier- und Holzstoffherstellung
US1950853A (en) * 1932-05-20 1934-03-13 E & M Lamort Fils Soc Suction box for the manufacture of paper and similar products
US2780968A (en) * 1951-09-01 1957-02-12 Beloit Iron Works Paper-making machines
DE1000679B (de) * 1954-04-14 1957-01-10 Millspaugh Ltd Presswalzensatz fuer Papiermaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291834A1 (fr) * 1974-11-20 1976-06-18 Hemag Maschinenbau Raboteuse de finition pour l'usinage de bois

Also Published As

Publication number Publication date
AT279333B (de) 1970-03-10
DE1291982B (de) 1969-04-03
GB1018042A (en) 1966-01-26
BE648096A (enrdf_load_html_response) 1964-09-16
NL6405421A (enrdf_load_html_response) 1964-11-19

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