DE10331683B3 - Assembly to clean used paper fiber suspensions, for recycling, has a rotating reject collection chamber to spin off heavy particles and a returned part-flow to prevent loss of usable fibers - Google Patents
Assembly to clean used paper fiber suspensions, for recycling, has a rotating reject collection chamber to spin off heavy particles and a returned part-flow to prevent loss of usable fibers Download PDFInfo
- Publication number
- DE10331683B3 DE10331683B3 DE2003131683 DE10331683A DE10331683B3 DE 10331683 B3 DE10331683 B3 DE 10331683B3 DE 2003131683 DE2003131683 DE 2003131683 DE 10331683 A DE10331683 A DE 10331683A DE 10331683 B3 DE10331683 B3 DE 10331683B3
- Authority
- DE
- Germany
- Prior art keywords
- reject
- sieve
- chamber
- paper fiber
- outlet
- 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 - Fee Related
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/023—Stationary screen-drums
- D21D5/026—Stationary screen-drums with rotating cleaning foils
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Anspruchs 1 und einen Siebapparat zu seiner Durchführung.The The invention relates to a method according to the preamble of the claim 1 and a sieve for its implementation.
Der Zweck eines derartigen Verfahrens bzw. Siebapparates besteht darin, aus einer wässrigen Papierfasersuspension, die z.B. aus Altpapier gewonnen sein kann, unerwünschte Schmutzstoffe auszuscheiden. Bekanntlich enthält das Altpapier neben den verwendbaren Faserstoffen auch eine gewisse Menge von Störstoffen, welche nicht in das Papier gelangen dürfen.The The purpose of such a method or screening apparatus is from an aqueous paper fiber suspension, e.g. unwanted contaminants can be obtained from waste paper. As is known contains in addition to the usable fiber materials, the waste paper also has a certain amount Amount of contaminants, which must not get into the paper.
Üblicherweise werden die Rohstoffe in einem Stofflöser mit Wasser vermischt und so weit zerkleinert, dass sie als Suspension aus dem Stofflöser abgepumpt werden können. Auch wenn in vielen Fällen bereits im Stofflöser eine Vorreinigung erfolgt, verbleibt noch eine beträchtliche Menge von Störstoffen in der abgepumpten Suspension und gelangt in die für die Aufbereitung verwendeten Vorrichtungen. Diese Störstoffe, deren Partikelgröße bereits deutlich kleiner ist als noch im Stofflöser, werden durch geeignete Trennvorrichtung, von denen meist mehrere in verschiedenen Trennstufen eingesetzt werden, aus der Papierfasersuspension entfernt. Die dabei anfallenden Rejektströme haben dann einen hohen Verschmutzungsgrad und bereiten bei der Verarbeitung, also weiterer Schmutzanreicherung und Faserrückgewinnung, beträchtliche Schwierigkeiten. Neben den Kunststofffolienstücken enthalten sie eine große Menge von solchen Schwerteilen, die auf Grund ihrer bereits reduzierten Größe (im Vergleich mit den im Stofflöser behandelten Störstoffen) Schwierigkeiten bei der Ausscheidung verursachen. Erschwerend kommt hinzu, dass üblicherweise relativ hohe Stoffdichten, also bis ca. 3% gefahren werden, um die Ökonomie des Sortierapparates zu verbessern.Usually the raw materials are mixed with water in a pulper and crushed so much that it is pumped out of the pulper as a suspension can be. Even if in many cases it already does in the pulper pre-cleaning takes place, there is still a considerable amount Amount of contaminants in the pumped suspension and gets into the used for the preparation Devices. These contaminants, their particle size already is significantly smaller than that in the fabric dissolver, by suitable Separating device, mostly several in different separation stages are used, removed from the paper fiber suspension. The one there resulting reject flows then have a high degree of pollution and prepare during processing, so further dirt accumulation and fiber recovery, considerable Trouble. In addition to the plastic film pieces, they contain a large amount of such heavy parts, which due to their already reduced Size (in comparison with those in the pulper treated contaminants) Cause difficulty in excretion. To make matters worse added to that usually relatively high material densities, that is, up to approx. 3% can be driven for economy to improve the sorting apparatus.
Aus
der
Es ist Aufgabe der Erfindung, einen Siebapparat zu schaffen, mit welchem es gelingt, die Aussortierung von Störstoffen auch dann betriebssicher durchzuführen, wenn die Papierfasersuspension stark verunreinigt ist.It is the object of the invention to provide a screening apparatus with which it is possible to carry out the sorting out of impurities reliably even if the paper fiber suspension is heavily contaminated.
Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 genannten Merkmale gelöst.This Task is by those mentioned in the characterizing part of claim 1 Features solved.
Die Erfindung und ihre Vorteile werden erläutert an Hand von Zeichnungen. Dabei zeigen:The Invention and its advantages are explained with reference to drawings. Show:
Der
in
Die
verschmutzte Papierfasersuspension S wird durch den Einiaufstutzen
Die
relativ große
Rejektkammer
In
Folge des relativ großen
Volumens, das dem Rejekt R in der Rejektkammer
Die
Schleuse wird durch zwei Absperrorgane
Für den Fall,
dass die zulaufende Papierfasersuspension S Schwerteile enthält, die
auf Grund ihrer Grobheit das Sieb
Während die
in
Vorzugsweise
wird man das Verfahren mit einem Siebapparat durchführen, indem
das Sieb
Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003131683 DE10331683B3 (en) | 2003-07-14 | 2003-07-14 | Assembly to clean used paper fiber suspensions, for recycling, has a rotating reject collection chamber to spin off heavy particles and a returned part-flow to prevent loss of usable fibers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003131683 DE10331683B3 (en) | 2003-07-14 | 2003-07-14 | Assembly to clean used paper fiber suspensions, for recycling, has a rotating reject collection chamber to spin off heavy particles and a returned part-flow to prevent loss of usable fibers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10331683B3 true DE10331683B3 (en) | 2004-10-14 |
Family
ID=32981348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003131683 Expired - Fee Related DE10331683B3 (en) | 2003-07-14 | 2003-07-14 | Assembly to clean used paper fiber suspensions, for recycling, has a rotating reject collection chamber to spin off heavy particles and a returned part-flow to prevent loss of usable fibers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10331683B3 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1886722A2 (en) * | 2006-08-09 | 2008-02-13 | Voith Patent GmbH | Residue sluice for filter devices, in particular for coating paint filters |
WO2011076660A1 (en) * | 2009-12-25 | 2011-06-30 | Voith Patent Gmbh | Method and screening device for screening a fiber suspension |
WO2014170109A1 (en) * | 2013-04-15 | 2014-10-23 | Voith Patent Gmbh | Pressure sorter reject stock handling |
CN113774704A (en) * | 2021-09-06 | 2021-12-10 | 山东天利机械制造有限公司 | Multifunctional high-efficiency heavy slag remover |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2611885A1 (en) * | 1976-03-20 | 1977-09-29 | Finckh Maschf | APPLIANCE FOR CLEANING FIBER SUSPENSIONS OF LOW DENSITY |
-
2003
- 2003-07-14 DE DE2003131683 patent/DE10331683B3/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2611885A1 (en) * | 1976-03-20 | 1977-09-29 | Finckh Maschf | APPLIANCE FOR CLEANING FIBER SUSPENSIONS OF LOW DENSITY |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1886722A2 (en) * | 2006-08-09 | 2008-02-13 | Voith Patent GmbH | Residue sluice for filter devices, in particular for coating paint filters |
EP1886722A3 (en) * | 2006-08-09 | 2008-09-24 | Voith Patent GmbH | Residue sluice for filter devices, in particular for coating paint filters |
WO2011076660A1 (en) * | 2009-12-25 | 2011-06-30 | Voith Patent Gmbh | Method and screening device for screening a fiber suspension |
CN102782213A (en) * | 2009-12-25 | 2012-11-14 | 沃依特专利有限责任公司 | Method and screening device for screening a fiber suspension |
WO2014170109A1 (en) * | 2013-04-15 | 2014-10-23 | Voith Patent Gmbh | Pressure sorter reject stock handling |
DE102013206638A1 (en) * | 2013-04-15 | 2014-10-30 | Voith Patent Gmbh | Pressure sorter reject treatment |
CN113774704A (en) * | 2021-09-06 | 2021-12-10 | 山东天利机械制造有限公司 | Multifunctional high-efficiency heavy slag remover |
CN113774704B (en) * | 2021-09-06 | 2023-10-10 | 山东天利机械制造有限公司 | Multifunctional high-efficiency heavy slag remover |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: VOITH PATENT GMBH, 89522 HEIDENHEIM, DE |
|
8339 | Ceased/non-payment of the annual fee |