DE644472C - Suction roll for paper machines - Google Patents

Suction roll for paper machines

Info

Publication number
DE644472C
DE644472C DEB174168D DEB0174168D DE644472C DE 644472 C DE644472 C DE 644472C DE B174168 D DEB174168 D DE B174168D DE B0174168 D DEB0174168 D DE B0174168D DE 644472 C DE644472 C DE 644472C
Authority
DE
Germany
Prior art keywords
suction roll
suction
paper machines
paddle wheel
perforated
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
Application number
DEB174168D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEB174168D priority Critical patent/DE644472C/en
Application granted granted Critical
Publication of DE644472C publication Critical patent/DE644472C/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00Press section of machines for making continuous webs of paper
    • D21F3/02Wet presses
    • D21F3/10Suction rolls, e.g. couch rolls

Landscapes

  • Paper (AREA)

Description

Saugwalze für Papiermaschinen Saugwalzen für das Langsieb von Papiermaschinen sind in der Regel mit gelochtem oder geschlitztem Mantel (Siebmantel) versehen, an dessen Innenumfang ein feststehender Saugkasten arbeitet. Hierbei schleift die Innenwandung des Siebmantels an den Rändern des Saugkastens entlang und macht besondere Abdichtungen an diesen Rändern erforderlich. Diese Abdichtungen sind daher ebenso wie der Innenumfang des gelochten Mantels einer starken Abnutzung unterworfen, und die Reibung veranlaßt hohen Kraftbedarf.Suction roll for paper machines Suction rolls for the fourdrinier of paper machines are usually provided with a perforated or slotted jacket (sieve jacket), a fixed suction box works on the inner circumference. Here the grinds Inner wall of the screen jacket along the edges of the suction box and makes it special Seals required on these edges. These seals are therefore the same like the inner circumference of the perforated jacket is subject to severe wear, and the friction causes high power requirements.

Durch die vorliegende Erfindung werden diese Nachteile der mit gelochtem Siebmantel versehenen Saugwalzen in jeder Hinsicht beseitigt. Die Erfindung besteht darin, daß am Innenumfang des Siebmantels ein Schaufelrad entgegengesetzt zur Drehrichtung der Saugwalze dicht entlang läuft und hierdurch als Saugpumpe wirkt. jede Abdichtung ist daher überflüssig, und es fällt somit auch die Reibung und der durch sie veranlaßte hohe Kraftbedarf weg.The present invention eliminates these disadvantages of the perforated Suction rolls provided with a screen jacket eliminated in every respect. The invention exists in that on the inner circumference of the screen jacket a paddle wheel opposite to the direction of rotation the suction roll runs along tightly and thereby acts as a suction pump. any waterproofing is therefore superfluous, and the friction and that caused by it also fall high power requirement away.

Der Gegenstand der Erfindung ist in der leichnung in einer Ausführungsform dargestellt.The subject matter of the invention is shown in one embodiment shown.

Die vom Langsieb a umschlungene Saugwalze ist mit gelochtem Mantel b versehen. Dicht am Innenumfang des gelochten Mantels läuft innerhalb der Saugwalze das Schaufelrad f, dessen Schaufeln g in der Drehrichtung des Schaufelrades geneigt sind. Diese Drehrichtung des Schaufelrades ist, wie die eingezeichneten Pfeile andeuten, entgegengesetzt zur Drehrichtung der Saugwalze b. Infolgedessen wird durch das Schaufelrad eine Saugwirkung von außen nach innen erzielt, so daß Luft und Wasser durch das Langsieb a, den Siebmantel b und die Zellen des Schaufelrades hindurch von außen nach innen gesaugt und hierdurch die auf dem Langsieb befindliche Stoffschicht kräftig entwässert wird. Die Abführung der angesaugten Luft und des Wassers erfolgt innerhalb des Schaufelrades in axialer Richtung in bekannter Weise. Bemerkenswert ist der besonders große Saugumfang, der beinahe bis zur Hälfte des Umfanges der Saugwalze, nötigenfalls sogar noch darüber hinaus gesteigert werden kann.The suction roll wrapped around by the Fourdrinier wire a is provided with a perforated jacket b. The paddle wheel f, the blades g of which are inclined in the direction of rotation of the paddle wheel, runs close to the inner circumference of the perforated shell inside the suction roll. This direction of rotation of the paddle wheel is, as the arrows indicated, opposite to the direction of rotation of the suction roll b. As a result, a suction effect is achieved from the outside to the inside by the paddle wheel, so that air and water are sucked through the wire a, the screen jacket b and the cells of the paddle wheel from the outside to the inside and thereby the material layer on the wire is vigorously drained. The sucked-in air and water are discharged within the paddle wheel in the axial direction in a known manner. The particularly large suction circumference is remarkable, which can be increased to almost half the circumference of the suction roll, if necessary even beyond it.

Claims (1)

PATENTANSPRUCH: Saugwalze für das Langsieb von Papiermaschinen mit zylindrischem, gelochtem oder geschlitztem Mantel (Siebmantel (I), dadurch gekennzeichnet, daB am Innenumfang des Siebmantels (b) ein Schaufelrad (f, g) entgegengesetzt zur Drehrichtung der Saugwalze dicht entlang läuft und hierdurch als Saugpumpe wirkt.PATENT CLAIM: Suction roll for the Fourdrinier of paper machines with cylindrical, perforated or slotted casing (sieve casing (I), characterized that on the inner circumference of the sieve shell (b) a paddle wheel (f, g) opposite to The direction of rotation of the suction roll runs along tightly and thereby acts as a suction pump.
DEB174168D Suction roll for paper machines Expired DE644472C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB174168D DE644472C (en) Suction roll for paper machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB174168D DE644472C (en) Suction roll for paper machines

Publications (1)

Publication Number Publication Date
DE644472C true DE644472C (en) 1937-05-04

Family

ID=7007428

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB174168D Expired DE644472C (en) Suction roll for paper machines

Country Status (1)

Country Link
DE (1) DE644472C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3841016A1 (en) * 1988-12-06 1990-06-07 Voith Gmbh J M Guide, including drive for a web made of paper or board
DE19647919A1 (en) * 1996-11-20 1998-05-28 Voith Sulzer Papiermasch Gmbh Moving paper or cardboard web guide

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3841016A1 (en) * 1988-12-06 1990-06-07 Voith Gmbh J M Guide, including drive for a web made of paper or board
DE19647919A1 (en) * 1996-11-20 1998-05-28 Voith Sulzer Papiermasch Gmbh Moving paper or cardboard web guide
EP0860545A2 (en) * 1996-11-20 1998-08-26 Voith Sulzer Papiermaschinen GmbH Apparatus to guide a web
EP0860545A3 (en) * 1996-11-20 1999-01-13 Voith Sulzer Papiermaschinen GmbH Apparatus to guide a web
US5915648A (en) * 1996-11-20 1999-06-29 Voith Sulzer Papiermaschinen Gmbh Perforated roll for guiding a flexible material web

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