DE644472C - Suction roll for paper machines - Google Patents
Suction roll for paper machinesInfo
- 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
Links
Classifications
-
- 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
- D21F3/10—Suction 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)
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)
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 |
-
0
- DE DEB174168D patent/DE644472C/en not_active Expired
Cited By (5)
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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