EP0964097A1 - Appareil de tamisage pour une suspension fibreuse sale - Google Patents

Appareil de tamisage pour une suspension fibreuse sale Download PDF

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Publication number
EP0964097A1
EP0964097A1 EP99108942A EP99108942A EP0964097A1 EP 0964097 A1 EP0964097 A1 EP 0964097A1 EP 99108942 A EP99108942 A EP 99108942A EP 99108942 A EP99108942 A EP 99108942A EP 0964097 A1 EP0964097 A1 EP 0964097A1
Authority
EP
European Patent Office
Prior art keywords
housing
screening apparatus
sieve
rotor
light
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.)
Withdrawn
Application number
EP99108942A
Other languages
German (de)
English (en)
Inventor
Manfred Duchow
Peter-Paul Karbstein
Jochen Krebs
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.)
Voith Patent GmbH
Original Assignee
Voith Sulzer Papiertechnik Patent GmbH
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
Application filed by Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Sulzer Papiertechnik Patent GmbH
Publication of EP0964097A1 publication Critical patent/EP0964097A1/fr
Withdrawn legal-status Critical Current

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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
    • D21D5/04—Flat screens
    • 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
    • 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
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
    • D21D5/22—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a vertical axis

Definitions

  • the invention relates to a sieve for contaminated fiber suspensions according to the preamble of claim 1.
  • aqueous one Fibrous suspension e.g. can be obtained from waste paper, undesirable Get out contaminants.
  • waste paper contains the desired ones Fibers also contain a certain amount of contaminants that are not in the paper allowed to arrive.
  • the raw materials are usually mixed with water in a pulper and so on widely crushed that they can be pumped out of the pulper as a suspension. Even if pre-cleaning is already carried out in the pulper in many cases, it remains a considerable amount of contaminants in the pumped suspension and gets into the devices used for processing. Usually are Several separations are required to separate the various types of contaminants remove different sections of the reprocessing process. In many cases the occurrence of blockages in the treatment system due to contaminants only thereby avoiding that flushing cycles are set up, which is understandably too Processing plant burdens, volume surges and fiber losses can lead.
  • German patent specification 26 58 845 shows a pulper for dissolving and sorting of waste paper, which also contains an overhead sieve, which is supported by a rotor is kept free. A co-rotating channel is centrally located in the rotor, which leads to considerable effort and increases the cost of the machine. Blockages in the canal cannot be ruled out and are difficult to remove.
  • the sieve apparatus according to the invention is able to use the sieve to remove impurities Retain housing and heavy parts due to their higher density from the Remove fiber suspension. Compared to the prior art, it also points have the advantage of targeting lightweight materials which, due to their specific weight, Gather the core area of the housing, remove it early and, if desired, also dissipate continuously. For this purpose, the appropriately positioned is used Lightweight tube. It is of great advantage that the light materials do not last long in the apparatus remain because the removal of contaminants always increases with shredding becomes more difficult.
  • Vortex flow is generated in which, due to the centrifugal forces, an accumulation of the Light materials in the middle and the heavy parts close to the wall of the housing becomes. Due to the arrangement of the apparatus, the heavy parts can e.g. on a helical path to the outlet opening for heavy parts. In a Special configuration with the conical housing part lying at the bottom Heavy part separation further improved. Besides, that's essentially vertical arrangement of the axis of symmetry helpful.
  • the screen shown in Fig. 1 contains a housing 1, which here from an above lying cylindrical part 8 and an underlying conical part 9 there.
  • a rotor 4 is located in the cover of the housing 1 and concentrically with its center line arranged, which by an overlying only indicated drive set in Rotation can be offset. This rotor is used to generate a Vortex flow in the housing 1, as well as one, also in the cover of the housing 1 to keep seated sieve 3 free from blockages.
  • the screen 3 divides the interior of the Housing 1 from the overlying accept chamber 2, from which the inside accumulated material can be discharged through the accept 5. In the lower part of the housing 1 there is an obliquely downward outlet opening 6 for the Heavy parts.
  • the light-weight tube 7 In the central area of the housing 1, the light-weight tube 7 can be seen, which is coaxial is arranged to the rotor 4
  • the purpose of this lightweight tube 7 is that the when the machine is in operation, light substances accumulating inside are discharged to the outside can be. As a rule, you will operate the screen with overpressure, so that the light materials come out of their own accord. The overpressure can be the amount of regulate removed light materials. But it is also possible to use the lightweight material outlet to provide a shut-off device, not shown, and e.g. open and closed intermittently conclude. Another possibility would be a metering device, which Conveying a certain amount continuously from the inside without clogging. In the center of the rotor 4 there can be a downward pipe section 17, which stabilizes the vertebra.
  • Fi.g 2a and 2b show special ways to the inventive Adjust the sieve to the requirements.
  • the blades 12 of the rotor 4 are on their front edges 14 (Fig. 2a) or 14 '(Fig. 2b) provided with bevels. Between the movement of the wing and the surrounding suspension one Relative speed exists, a hydraulic one goes from these inclined surfaces Effect. 2a, the suspension located near the sieve is removed from the sieve transported away, while in the case of Fig. 2b an increased transport effect to the sieve there.
  • the embodiment according to FIG. 2a is particularly appropriate when the sieve primarily for sorting a roughly contaminated suspension is used. In this case, the screen openings 13 usually also become larger selected, approx. 10 to 20 mm diameter. In other cases where the sieve should also be suitable for crushing the substances contained in the suspension it may be desirable to press the fabric against the screen using the wings. At Such use of the machine is also the attachment of the already mentioned impact pieces (18) to consider, because these also Increase crushing effect.
  • FIGS. 3 to 5 The possible uses of the screening apparatus according to the invention should be based on some plant examples, as shown in FIGS. 3 to 5, are explained.
  • a material dissolver 20 is assumed in which the paper stock, e.g. Waste paper, mixed with water and transferred to a suspension.
  • the pulper 20 is equipped in its bottom area with a sieve, not shown, through which a Part of the suspension enter the annular space 21 and as a fiber suspension 22 can be processed further.
  • 3 specifically shows the disposal of the pulper 20 through a settling tank 23 and the forwarding of the coarse Heavy parts 24 free suspension into a sieve apparatus 19 according to the invention.
  • This screening apparatus 19 essentially has the task of heavy parts 24 'and To remove light substance 25 so as to form a cleaned accept substance suspension 26, which has passed through the sieve of the sieve apparatus 19.
  • the light substances 25 get into one Post sorting apparatus, e.g. a sorting drum 27 in which a separation between Interfering substances 28 and fiber suspension takes place, the fiber suspension e.g. in the pulper 20 can be returned.
  • Post sorting apparatus e.g. a sorting drum 27 in which a separation between Interfering substances 28 and fiber suspension takes place
  • the fiber suspension e.g. in the pulper 20 can be returned.
  • Sieve apparatus 19 thus as an organ for the disposal of the pulper 20.
  • the combination of two inventive sieves fulfills a similar function 19 ', 19' 'according to FIG. 4.
  • the second screening apparatus 19' ' is used to treat the the upstream sieve apparatus 19 'originating light material takes over its rejects treatment. It can usually be made smaller and with one smaller perforations.
  • FIGS. 3 to 5 are only examples of the sensible use of the Are subject of the invention and should show the possibilities of the new apparatus.
  • the diagrams show only the most important process steps, the ones used for this Apparatus only indicated and all conveyor and control devices are not shown.
  • the sieve apparatus according to the invention is not exactly vertical position, but e.g. at an angle of 30 ° against the Arrange perpendicular (see Fig. 6).
  • the outlet opening 6 leads to the Heavy parts steeper down.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
EP99108942A 1998-06-09 1999-05-05 Appareil de tamisage pour une suspension fibreuse sale Withdrawn EP0964097A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19825669 1998-06-09
DE1998125669 DE19825669B4 (de) 1998-06-09 1998-06-09 Siebapparat für eine verschmutzte Faserstoffsuspension

Publications (1)

Publication Number Publication Date
EP0964097A1 true EP0964097A1 (fr) 1999-12-15

Family

ID=7870361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99108942A Withdrawn EP0964097A1 (fr) 1998-06-09 1999-05-05 Appareil de tamisage pour une suspension fibreuse sale

Country Status (2)

Country Link
EP (1) EP0964097A1 (fr)
DE (1) DE19825669B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010510401A (ja) * 2006-11-23 2010-04-02 フォイト パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング 汚染された繊維材料懸濁液に用いられる精選装置および該精選装置の使用
CN113774704A (zh) * 2021-09-06 2021-12-10 山东天利机械制造有限公司 多功能高效重质除渣器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004015011A1 (de) * 2004-03-26 2005-08-18 Voith Paper Patent Gmbh Verfahren zum Auflösen und Reinigen von störstoffhaltigen Papierrohrstoffen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310242A (en) * 1964-02-24 1967-03-21 Improved Machinery Inc Fiber disintegrating and classifying apparatus
DE2302601A1 (de) * 1972-01-28 1973-08-09 Walmsleys Bury Ltd Separator, insbesondere fuer die aufbereitung von altpapier
DE2658845A1 (de) * 1976-12-08 1978-06-22 Escher Wyss Gmbh Stoffloeser zum aufloesen und sortieren von altpapier
DE2840128A1 (de) * 1977-11-10 1979-05-17 Beloit Corp Wirbelstrom-abscheider fuer aufschlaemmungen
DE3010952A1 (de) * 1980-03-21 1981-10-08 J.M. Voith Gmbh, 7920 Heidenheim Scheibensortierer zum reinigen von faserstoffsuspensionen
DE3140549A1 (de) * 1981-10-13 1983-05-05 J.M. Voith Gmbh, 7920 Heidenheim Sortiergeraet, insbesondere fuer fasersuspensionen der papierindustrie

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310242A (en) * 1964-02-24 1967-03-21 Improved Machinery Inc Fiber disintegrating and classifying apparatus
DE2302601A1 (de) * 1972-01-28 1973-08-09 Walmsleys Bury Ltd Separator, insbesondere fuer die aufbereitung von altpapier
DE2658845A1 (de) * 1976-12-08 1978-06-22 Escher Wyss Gmbh Stoffloeser zum aufloesen und sortieren von altpapier
DE2840128A1 (de) * 1977-11-10 1979-05-17 Beloit Corp Wirbelstrom-abscheider fuer aufschlaemmungen
DE3010952A1 (de) * 1980-03-21 1981-10-08 J.M. Voith Gmbh, 7920 Heidenheim Scheibensortierer zum reinigen von faserstoffsuspensionen
DE3140549A1 (de) * 1981-10-13 1983-05-05 J.M. Voith Gmbh, 7920 Heidenheim Sortiergeraet, insbesondere fuer fasersuspensionen der papierindustrie

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010510401A (ja) * 2006-11-23 2010-04-02 フォイト パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング 汚染された繊維材料懸濁液に用いられる精選装置および該精選装置の使用
CN113774704A (zh) * 2021-09-06 2021-12-10 山东天利机械制造有限公司 多功能高效重质除渣器
CN113774704B (zh) * 2021-09-06 2023-10-10 山东天利机械制造有限公司 多功能高效重质除渣器

Also Published As

Publication number Publication date
DE19825669B4 (de) 2005-09-08
DE19825669A1 (de) 1999-12-16

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