EP3036371A1 - Drucksortierer - Google Patents
DrucksortiererInfo
- Publication number
- EP3036371A1 EP3036371A1 EP14750229.8A EP14750229A EP3036371A1 EP 3036371 A1 EP3036371 A1 EP 3036371A1 EP 14750229 A EP14750229 A EP 14750229A EP 3036371 A1 EP3036371 A1 EP 3036371A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- pressure sorter
- sorter according
- rotor blades
- suspension
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/20—Stationary drums with moving interior agitators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
- B07B1/24—Revolving drums with fixed or moving interior agitators
-
- 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
- D21D5/02—Straining or screening the pulp
- D21D5/023—Stationary screen-drums
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
Definitions
- the invention relates to a pressure sorter for cleaning a pulp suspension with a Siebense rotationally symmetrical trained sieve element, which divides the pressure sorter into a Zulaufraum and a Gutstoffraum, the Zulaufraum at one axial end with a suspension inlet and at the opposite axial end with a Rejektauslauf and Gutgutraum is associated with a Gutstoffablauf in connection and in the Zulaufraum a rotor with rotor blades, the axis of rotation of the Siebachse corresponds and rotates relative to the screen element, wherein the rotor blades are arranged distributed over a plurality of perpendicular to the rotation axis circumferential planes of the rotor.
- Pressure screens are used in the processing of paper pulp suspensions, in order to process the pulp suspension in a wet sieving.
- a pressure sorter includes a sieve element which is provided with a plurality of openings. The fibers contained in the suspension are to pass through the openings as accept, while the unwanted solid constituents are rejected thereon and discharged as a reject again from the sorter.
- a Sieb thriftr which is provided with wing elements for the clearance of the screen
- These wing elements have a hydrodynamic profile, which extends over the entire length of the screen element, a screen basket. Due to the relative movement to the surrounding suspension there the wing element at the front a pressure and behind a suction pulse on the screen to be cleared. Thereby, a part of the suspension, which was rejected on the screen or has already passed through the screen as accepts, sucked back, whereby the screen openings are kept free or cleared.
- the rotor blades are formed for example in DE-OS 3701669 of surveys.
- the object of the invention is therefore to reduce the energy intake and the risk of clogging with the simplest possible means.
- this object is achieved in that the width of the annular gap between the rotor and the screen element decreases from the suspension inlet to the reject outlet.
- the width of the annular gap decreases in steps or continuously. In view of ease of manufacture, the reduction in stages is preferable.
- the rotor should have at least one recess in at least one circumferential plane between the rotor blades. Furthermore, it has proved to be optimal if the rotor has at least three circumferential planes with rotor blades and / or each circumferential plane has two rotor blades each and / or the rotor blades have the same shape.
- the rotor blades adjacent circumferential planes should be arranged circumferentially offset from each other. This also counteracts clogging.
- the axis of rotation In order to achieve a transverse flow in the axial direction across the sieve element, the axis of rotation should be inclined or perpendicular to the machine plane.
- the rotor is located inside the sieve element, the sieve element is cylindrical and the rotor is designed as a cylindrical drum.
- the suspension feed should be arranged below the reject outlet.
- Figure 1 a schematic cross section through a pressure sorter parallel to the axis of rotation 10 and
- Figure 2 a cross section through the rotor 8 perpendicular to the axis of rotation 10.
- the pressure sorter has a screen element 2, here in the form of a cylindrical screen basket with vertical Siebachse 1, which the interior of the pressure sorter in an inlet space 3 and a Acceptance space 4 divides.
- the pulp suspension is fed via a suspension feed 5 at the lower end of the screen basket.
- the pulp suspension receives an angular momentum which causes it to move circumferentially.
- a transport flow is generated as a result of the applied pressure gradient between the lower suspension inlet 5 and located at the upper end of the screen basket Rejektauslauf 6 of the inlet chamber 3.
- the rejected from the screening element 2 part of the pulp suspension is conveyed as a reject over the Rejektauslauf 6 from the inlet space 3.
- a known Sieblaker is used, which moves relative to the screen element 2.
- this sieve clearer is formed by a rotor 8 rotating in the screen element 2 with rotor blades 9 fastened thereto.
- the rotor 8 has the shape of a cylindrical drum, wherein the axis of rotation 10 coincides with the Siebachse 1.
- All rotor blades 9 in this case have the same shape, which leads to a uniform effect on the pulp suspension and the screen element 2.
- the rotor blades 9 are arranged distributed over several, here three perpendicular to the rotation axis 10 extending circumferential planes 1 1 of the rotor 8, wherein each circumferential plane 1 1 more, here two rotor blades 9 has. It is essential, however, that the width of the annular gap 12 between the rotor 8 and the screening element 2 decreases from the suspension inlet 5 to the reject outlet 6 in stages. Expediently, the stepped transitions are each between two adjacent circumferential planes 1 1. Since the screen element 2 has a cylindrical shape, this means that the diameter of the rotor 8 increases discontinuously from bottom to top.
- the invention is also successful in other forms of rotor blades 9.
- the production is particularly simple if the rotor blades 9 are formed by elevations on the rotor 8.
- the radial extent of the rotor blades 9 decreases in stages, i. the height of the elevations on the rotor 8 decreases from the suspension inlet 5 to the reject outlet 6 in stages, whereby here too the steps between the circumferential planes 1 1 lie.
- the running in the direction of rotation of the rotor 8 cross-sectional area of the rotor blade 9 is formed as a rectangle.
- the blades 9 have not only the same shape but also the same dimensions, which reduces the cost.
- the rotor blades cover 9 a circumferential plane 1 1 completely in the direction of rotation.
- the rotor 8 has in each circumferential plane 1 1 between the rotor blades 9 at least one recess 13, which, however, extends only over part of the axial extent of the respective circumferential plane 11.
- the rotor blades 9 adjacent circumferential planes 1 1 offset in the circumferential direction to each other.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013216433.5A DE102013216433A1 (de) | 2013-08-20 | 2013-08-20 | Drucksortierer |
PCT/EP2014/067209 WO2015024812A1 (de) | 2013-08-20 | 2014-08-12 | Drucksortierer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3036371A1 true EP3036371A1 (de) | 2016-06-29 |
EP3036371B1 EP3036371B1 (de) | 2017-04-19 |
Family
ID=51301299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14750229.8A Active EP3036371B1 (de) | 2013-08-20 | 2014-08-12 | Drucksortierer |
Country Status (6)
Country | Link |
---|---|
US (1) | US9855585B2 (de) |
EP (1) | EP3036371B1 (de) |
JP (1) | JP6377159B2 (de) |
CN (1) | CN105473783B (de) |
DE (1) | DE102013216433A1 (de) |
WO (1) | WO2015024812A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023178364A2 (en) * | 2022-04-21 | 2023-09-21 | Kadant Black Clawson Llc | Rotor with forward-swept struts for pressure screen cylinders |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1448814A (fr) * | 1965-04-15 | 1966-08-12 | Ingersoll Rand Canada | Appareil de tamisage |
GB1294980A (de) * | 1970-05-11 | 1972-11-01 | ||
DE2830386C2 (de) * | 1978-07-11 | 1982-09-02 | Hermann Finckh, Maschinenfabrik GmbH & Co, 7417 Pfullingen | Verfahren zum Sortieren von Fasersuspensionen sowie Drucksortierer zur Durchführung des Verfahrens |
US4268381A (en) * | 1979-05-03 | 1981-05-19 | Uniweld Inc. | Rotary pulp screening device of the vertical pressure type |
US4642189A (en) * | 1983-12-12 | 1987-02-10 | Uniweld Inc. | Rotary screen of the vertical pressure type having pulp stock feed at different axial positions on the screen |
US4697982A (en) * | 1986-03-13 | 1987-10-06 | Uniweld Inc. | Rotary pulp screen of the horizontal type having pulp stock feed at different axial positions on the screen |
DE3701669A1 (de) | 1987-01-22 | 1988-08-04 | Voith Gmbh J M | Sortierfluegel |
DE3831845A1 (de) * | 1988-09-19 | 1990-04-12 | Voith Gmbh J M | Sortiereinrichtung fuer fasersuspensionen |
DE9201856U1 (de) * | 1992-02-14 | 1992-04-02 | J.M. Voith Gmbh, 7920 Heidenheim, De | |
FI92227C (fi) * | 1992-04-23 | 1994-10-10 | Ahlstroem Oy | Laite kuitususpension käsittelemiseksi |
FR2706495B1 (fr) * | 1993-06-16 | 1995-09-08 | Lamort E & M | Rotor pour l'épuration hydrodynamique sous pression de pâte à papier, et appareil muni de ce rotor. |
FI93979C (fi) * | 1993-08-20 | 1995-06-26 | Tampella Oy Valmet | Menetelmä ja painelajitin kuitumassan lajittelemiseksi |
FI102980B1 (fi) | 1997-05-21 | 1999-03-31 | Valmet Corp | Siipisovitelma kuitumassan lajittelulaitetta varten |
AT408997B (de) * | 2000-04-03 | 2002-04-25 | Andritz Ag Maschf | Sortierer für die papier-erzeugung und flügel für sortierer |
JP2002285485A (ja) * | 2001-03-28 | 2002-10-03 | Ishikawajima Sangyo Kikai Kk | スクリーン装置 |
SE0303260D0 (sv) * | 2003-12-04 | 2003-12-04 | Metso Paper Inc | Screening apparatus for screening pulp suspensions with monitoring means |
WO2011076660A1 (de) * | 2009-12-25 | 2011-06-30 | Voith Patent Gmbh | Verfahren und siebvorrichtung zum sieben einer faserstoffsuspension |
JPWO2012004887A1 (ja) * | 2010-07-09 | 2013-09-02 | 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VOITH PATENT GmbH | スクリーン装置 |
DE102011088102A1 (de) * | 2011-12-09 | 2013-06-13 | Voith Patent Gmbh | Siebvorrichtung zum Sieben einer Faserstoffsuspension |
GB2602386B (en) | 2021-11-10 | 2023-02-15 | Bluefin Group Ltd | Water sport board and anchor point for a water sport board |
-
2013
- 2013-08-20 DE DE102013216433.5A patent/DE102013216433A1/de not_active Ceased
-
2014
- 2014-08-12 WO PCT/EP2014/067209 patent/WO2015024812A1/de active Application Filing
- 2014-08-12 EP EP14750229.8A patent/EP3036371B1/de active Active
- 2014-08-12 CN CN201480046387.2A patent/CN105473783B/zh active Active
- 2014-08-12 JP JP2016535412A patent/JP6377159B2/ja active Active
-
2016
- 2016-02-16 US US15/044,658 patent/US9855585B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2015024812A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102013216433A1 (de) | 2015-03-12 |
EP3036371B1 (de) | 2017-04-19 |
CN105473783B (zh) | 2018-02-06 |
JP2016531215A (ja) | 2016-10-06 |
US9855585B2 (en) | 2018-01-02 |
US20160158804A1 (en) | 2016-06-09 |
WO2015024812A1 (de) | 2015-02-26 |
JP6377159B2 (ja) | 2018-08-22 |
CN105473783A (zh) | 2016-04-06 |
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