DE558795C - Cylindrical sieve dewatering machine for paper, pulp, etc. like - Google Patents

Cylindrical sieve dewatering machine for paper, pulp, etc. like

Info

Publication number
DE558795C
DE558795C DES85667D DES0085667D DE558795C DE 558795 C DE558795 C DE 558795C DE S85667 D DES85667 D DE S85667D DE S0085667 D DES0085667 D DE S0085667D DE 558795 C DE558795 C DE 558795C
Authority
DE
Germany
Prior art keywords
pulp
paper
dewatering machine
cylinder
cylindrical sieve
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
DES85667D
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 DES85667D priority Critical patent/DE558795C/en
Application granted granted Critical
Publication of DE558795C publication Critical patent/DE558795C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • D21F1/74—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders
    • D21F1/78—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders with pressure
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/04—Complete machines for making continuous webs of paper of the cylinder type
    • D21F9/046—Complete machines for making continuous webs of paper of the cylinder type with non-immersed cylinder

Landscapes

  • Paper (AREA)

Description

Rundsiebentwässerungsmaschine für Papier, Zellstoff u. dgl. Die Erfindung betrifft eine Rundsiebentwässerungsmaschine für Papier, Zellstoff u. dgl., welche dadurch gekennzeichnet ist, daß der Siebzylinder auf dem vom Stoff bedeckten Teil von einer allseitig geschlossenen Haube umgeben ist, deren unterer Teil als Stoffauflaufkasten dient, während dem oberen Teil ein gasförmiges Druckmedium zum Entwässern der gebildeten Bahn zugeführt wird.Cylindrical screen dewatering machine for paper, pulp and the like The invention relates to a cylinder mold dewatering machine for paper, pulp and the like characterized in that the screen cylinder is on the part covered by the fabric is surrounded by a hood closed on all sides, the lower part of which is used as a headbox serves, while the upper part of a gaseous pressure medium for dewatering the formed Web is fed.

Es ist zwar bereits bekannt, Rundsiebe mit einer allseitig geschlossenen Haube zu umgeben und diese als Stoffauflaufkasten zur Zuführung des Stoffes unter Überdruck zu benutzen. Andererseits ist es bekannt, über dem Langsieb einen Druckluftkasten anzuordnen und die Stoffbahn durch die hindurchströmende Druckluft zu entwässern.Although it is already known, round sieves with a closed on all sides To surround the hood and use it as a headbox for feeding the fabric under To use positive pressure. On the other hand, it is known to have a compressed air box above the Fourdrinier wire to be arranged and to dewater the fabric web by the compressed air flowing through it.

Es hat sich nun gezeigt, daß, wenn man diese bekannten Merkmale in der beansP-ruchten Weise bei. einer Rundsiebentwässerungsmaschine kombiniert, man zu einer überraschenden Steigerung der Leistungsfähigkeit gelangt.It has now been shown that if you include these well-known features in the beansP-righteous way. combined with a cylinder mold dewatering machine, man leads to a surprising increase in performance.

In der Zeichnung ist eine Rundsiebentwässerungsmaschine gemäß der Erfindung dargestellt.In the drawing is a cylinder sieve dewatering machine according to Invention shown.

Der Hauptteil der Vorrichtung besteht aus dem Siebzylinder i, der in geeigneter Weise in der Richtung des Pfeiles z in Umdrehung versetzt wird. Der obere Teil des Zylinders ist von einer Haube 3 umgeben, so daß eine geschlossene Kammer 4 gebildet wird, deren Boden aus dem entsprechenden. Teil der Mantelfläche des Zylinders i besteht. Die Stoffmischung wird durch das Rohr 5 und das gasförmige Druckmedium durch das Rohr 6 gleichmäßig eingepreßt. Das gasförmige Druckmedium kann aus Luft, einem Gas oder einer Gasmischung vor. geeignetem Druck und geeigneter Temperatur bestehen. Die Stoffmischung steigt daher nur bis zu einem gewissen Niveau a in der Druckkammer, so daß der oberste Teil des Zylinders oberhalb dieses Niveaus liegt. Der Stoff lagert sich als ein Belag mit in der Umdrehungsrichtung zunehmender Stärke auf die Mantelfläche des Siebzylinders ab. Wenn der Belag in das Bereich des Druckmittels gelangt, wird das Druckmittel durch den Belag hindurchgeblasen, wodurch dieser entwässert und weiter verdichtet wird. Bei der Austrittsstelle der Stoffbahn ist eine Druckwalze vorgesehen, mittels welcher die Bahn von dem Zylinder abgenommen wird. Zwischen dieser Walze und der vorderen Wand der Druckkammer sowie an der Eintrittsstelle des Siebzylinders zwischen der Kammerwand und dem Mantel des Zylinders ist eine Abdichtung vorgesehen. Auch zwischen den Stirnwänden der Druckkammer und dem Zylindermantel sind Dichtungen vorhanden, so daß der erforderliche Überdruck in der Kammer 4 ohne Verlust an Stoffmischung oder Druckgas aufrechterhalten werden kann.The main part of the device consists of the screen cylinder i, the is set in rotation in a suitable manner in the direction of the arrow z. Of the upper part of the cylinder is surrounded by a hood 3, so that a closed Chamber 4 is formed, the bottom of which consists of the corresponding. Part of the lateral surface of the cylinder i. The mixture of substances is through the pipe 5 and the gaseous Pressurized medium through the pipe 6 evenly. The gaseous pressure medium can consist of air, a gas or a gas mixture. suitable pressure and suitable Temperature. The mixture of substances therefore only increases up to a certain level a in the pressure chamber so that the uppermost part of the cylinder is above this level lies. The material is deposited as a coating with increasing in the direction of rotation Strength on the outer surface of the screen cylinder. When the topping is in the area of the pressure medium arrives, the pressure medium is blown through the covering, whereby this is drained and further compacted. At the exit point of Fabric web is provided a pressure roller by means of which the web from the cylinder is removed. Between this roller and the front wall of the pressure chamber as well at the entry point of the screen cylinder between the chamber wall and the jacket a seal is provided for the cylinder. Also between the end walls of the Pressure chamber and the cylinder jacket are seals, so that the required Maintain positive pressure in the chamber 4 without loss of substance mixture or pressurized gas can be.

Claims (1)

PATENTANSPRUCH: Rundsiebentwässerungsmaschine für Papier, 'Zellstoff u. dgl., dadurch gekennzeichnet, .daß der Siebzylinder auf dem vom Stoff bedeckten Teil von einer allseitig geschlossenen Haube umgeben ist, deren unterer Teil als Stoffauflaufkasten dient, während dem oberen Teil ein gasförmiges Druckmedium zum Entwässern der gebildeten Bahn zugeführt wird.PATENT CLAIM: Cylindrical screen dewatering machine for paper, 'pulp and the like, characterized in that the screen cylinder is on top of the one covered by the fabric Part is surrounded by a hood closed on all sides, the lower part of which as Headbox is used, while the upper part of a gaseous pressure medium for Dewatering is fed to the web formed.
DES85667D Cylindrical sieve dewatering machine for paper, pulp, etc. like Expired DE558795C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES85667D DE558795C (en) Cylindrical sieve dewatering machine for paper, pulp, etc. like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES85667D DE558795C (en) Cylindrical sieve dewatering machine for paper, pulp, etc. like

Publications (1)

Publication Number Publication Date
DE558795C true DE558795C (en) 1932-09-12

Family

ID=7512497

Family Applications (1)

Application Number Title Priority Date Filing Date
DES85667D Expired DE558795C (en) Cylindrical sieve dewatering machine for paper, pulp, etc. like

Country Status (1)

Country Link
DE (1) DE558795C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947590C (en) * 1952-11-13 1956-08-16 Krauss Maffei Imp G M B H & Co Cylindrical screen dewatering machine operating under increased pressure and a method for operating such
DE1036623B (en) * 1952-12-12 1958-08-14 Kamyr Ab Bleaching plant for pulp
DE1054826B (en) * 1953-09-21 1959-04-09 Forming Machine Company Of Ame Method and device for washing paper stock

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947590C (en) * 1952-11-13 1956-08-16 Krauss Maffei Imp G M B H & Co Cylindrical screen dewatering machine operating under increased pressure and a method for operating such
DE1036623B (en) * 1952-12-12 1958-08-14 Kamyr Ab Bleaching plant for pulp
DE1054826B (en) * 1953-09-21 1959-04-09 Forming Machine Company Of Ame Method and device for washing paper stock

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