EP0244744B1 - Zentrifugalkraftsichter - Google Patents

Zentrifugalkraftsichter Download PDF

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Publication number
EP0244744B1
EP0244744B1 EP87106200A EP87106200A EP0244744B1 EP 0244744 B1 EP0244744 B1 EP 0244744B1 EP 87106200 A EP87106200 A EP 87106200A EP 87106200 A EP87106200 A EP 87106200A EP 0244744 B1 EP0244744 B1 EP 0244744B1
Authority
EP
European Patent Office
Prior art keywords
rotors
sifting
rotor
classifying
housing
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 - Lifetime
Application number
EP87106200A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0244744A3 (en
EP0244744A2 (de
Inventor
Ulrich Barthelmess
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.)
Omya GmbH
Original Assignee
Omya 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6300365&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0244744(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Omya GmbH filed Critical Omya GmbH
Priority to AT87106200T priority Critical patent/ATE68113T1/de
Publication of EP0244744A2 publication Critical patent/EP0244744A2/de
Publication of EP0244744A3 publication Critical patent/EP0244744A3/de
Application granted granted Critical
Publication of EP0244744B1 publication Critical patent/EP0244744B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes

Definitions

  • the invention relates to a centrifugal classifier according to the preamble of patent claim 1.
  • the conventional classifiers only one classifying wheel equipped with the classifying vanes is provided in the housing (for example DE-A-16 07 631).
  • the throughput of these classifiers is limited.
  • a classifying rotor with several longer blades has already been arranged in a classifier housing, which has an outlet for fine material / classifying air mixture at each end, which practically connects two or more classifiers.
  • the visible blades can extend between two end rings mounted in the end walls of the housing (DE-C-28 45 400) or by means of support discs must be mounted on a continuous shaft (DE-C-29 51 819). With this one achieves a throughput that is several times greater with greater selectivity.
  • a certain classifier has only ever delivered a certain separating grain size at a certain speed and a certain air throughput.
  • the invention has for its object to provide a classifier with even higher performance, from which several grain fractions with different separating grain sizes can be deducted at the same time, the individual fine grain fractions should have as little oversize and as little undersize as possible.
  • the solution to this problem is specified in the characterizing part of claim 1. According to the invention, therefore, a plurality of classifying rotors are provided in a cuboid housing, from each of which a specific fine-grain fraction can be extracted.
  • the rear view rotor in the flow direction preferably has a larger separating grain size than the front one. Further refinements are specified in the subclaims.
  • three known view rotors 2, 3, 4 are arranged one above the other in an elongated, box-shaped housing 1.
  • the rotors are mounted on one housing wall 5 and driven by a separate drive 6, 7, 8.
  • a tube penetrating the side wall 9 of the housing projects into the interior of the rotor 2, 3, 4, which means that each rotor bumps into one separate fine air outlet 10,11,12 is connected.
  • the gap between a ring 13 connecting the rotor blades at its free end and the wall 9 can be sealed by a labyrinth seal - with or without flushing medium.
  • the view rotors 2, 3, 4 can have different separation limits. For this purpose, they can be driven at different speeds, operated with different suction, or they have different separation limits from the start (i.e. even at the same speed and the same).
  • the lower (or first in the direction of flow) classifying rotor 2 has the smallest separation limit
  • the middle classifying rotor 3 has a middle classifying limit
  • the upper (or in the direction of flow third) classifying rotor 4 has the largest classifying limit.
  • the finest fines are extracted from the bottom / first outlet 10
  • a medium fines from the middle outlet 11 and a somewhat coarser fines are extracted from the upper outlet 12 together with visible air.
  • a nozzle 15 is attached, from which a remaining part of the classifying air is still in this contained, relatively coarse material is extracted.
  • the air flows are indicated by wide arrows, the particle flows by narrow arrows.
  • the finest particle fraction is thus first drawn off from the classifying material introduced below. This finest grain fraction is therefore no longer present above the lowest rotor 2. The same applies to the middle and also to the upper view rotor 3,4. This gives you several grain fractions with a very "steep" grain distribution, ie with very little oversize and very little undersize.
  • FIGS. 3 and 4 essentially corresponds to that of FIGS. 1 and 2 (same parts are denoted by the same reference numerals), but with the difference that the particle mixture to be divided into several grain fractions by means of an inlet 16 arranged at the top / side in the sifter housing 1 is entered, while a funnel-shaped coarse material outlet 17 is provided at the bottom, into which a visible air inlet 18 opens laterally.
  • This version is intended for coarser visual goods, at which the coarse material is too big or heavy to be discharged with a stream of visible air.
  • the view rotors which are provided at a relatively short distance from one another, influence one another. In particular, adhering particles are separated (deagglomerated).
  • the view rotors can rotate in the same direction or in opposite directions.
  • the throughput is also increased.
  • the view rotors can also be operated at the same speed, i.e. same separation size, let it run if it is only the higher throughput that is important, i.e. large quantities of visible material are to be divided into only two grain fractions.
  • suction rotors can be used if a correspondingly high output is important.
  • each with four classifying rotors 30a, b, c are provided one above the other.
  • the rotors 30a of the bottom row have the smallest
  • the rotors 30b of the middle row have a middle
  • the rotors 30c of the top row have a coarser separation size. Seen from the side, this arrangement corresponds to that according to FIG. 1.
  • several fine material fractions are obtained, but each in four times the amount.
  • the visible-air mixture is introduced into the housing 22 at the bottom by means of pipes. Coarse material is discharged through a funnel-shaped lower housing part 24.
  • separating rotors with a larger diameter can be arranged between those with a smaller diameter.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Cyclones (AREA)
EP87106200A 1986-05-07 1987-04-29 Zentrifugalkraftsichter Expired - Lifetime EP0244744B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87106200T ATE68113T1 (de) 1986-05-07 1987-04-29 Zentrifugalkraftsichter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3615494 1986-05-07
DE19863615494 DE3615494A1 (de) 1986-05-07 1986-05-07 Zentrifugalkraftsichter

Publications (3)

Publication Number Publication Date
EP0244744A2 EP0244744A2 (de) 1987-11-11
EP0244744A3 EP0244744A3 (en) 1989-05-17
EP0244744B1 true EP0244744B1 (de) 1991-10-09

Family

ID=6300365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106200A Expired - Lifetime EP0244744B1 (de) 1986-05-07 1987-04-29 Zentrifugalkraftsichter

Country Status (7)

Country Link
US (1) US4857178A (enrdf_load_stackoverflow)
EP (1) EP0244744B1 (enrdf_load_stackoverflow)
JP (1) JPS6328477A (enrdf_load_stackoverflow)
AT (1) ATE68113T1 (enrdf_load_stackoverflow)
DE (2) DE3615494A1 (enrdf_load_stackoverflow)
ES (1) ES2026861T3 (enrdf_load_stackoverflow)
GR (1) GR3003247T3 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19854855C2 (de) * 1998-11-27 2002-01-17 Hosokawa Alpine Ag & Co Windsichter
EP3677348B1 (de) 2018-12-13 2023-09-06 NETZSCH-Feinmahltechnik GmbH Fliehkraftsichter mit speziellem sichterrad

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814458A1 (de) * 1988-04-28 1989-11-09 Krupp Polysius Ag Windsichter
JP2936863B2 (ja) * 1992-01-14 1999-08-23 ヤマハ株式会社 楽音信号形成装置のための音色制御装置
US5259510A (en) * 1992-03-31 1993-11-09 Edward Lowe Industries, Inc. Apparatus for separating and removing fine particulates from a particle flow
AT404234B (de) * 1996-07-08 1998-09-25 Pmt Gesteinsvermahlungstechnik Sichtrad für einen windsichter
DE19943528A1 (de) * 1999-09-11 2001-03-15 Kloeckner Humboldt Wedag Sichter zum Sichten von körnigem Gut
KR100886197B1 (ko) 2008-05-29 2009-02-27 주식회사 우양이엠에스 집진장치
JP5151940B2 (ja) * 2008-12-03 2013-02-27 株式会社リコー 分級装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0226987A2 (de) * 1985-12-21 1987-07-01 O & K Orenstein & Koppel Aktiengesellschaft Vorrichtung zum Klassieren von staubförmigen Schüttgütern

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US535099A (en) * 1895-03-05 meadon
DE870996C (de) * 1944-04-19 1953-03-19 Mannesmann Ag Verfahren zur Erzeugung wertvoller, insbesondere niedrig siedender Kohlenwasserstoffoele aus Steinkohle durch Cracken
US2953307A (en) * 1956-10-15 1960-09-20 Microcylclomat Co Synergistic fluid energy reducing and classifying unit
US2973094A (en) * 1958-09-02 1961-02-28 Claude B Schneible Co Separating apparatus and method
DE1507729A1 (de) * 1966-07-05 1970-01-08 Polysius Ag Windsichter
DE1607631A1 (de) * 1967-07-27 1970-10-22 Krupp Gmbh Windsichter
DE2117552B2 (de) * 1971-04-10 1973-08-16 G Siempelkamp & Co, 4150 Krefeld Vorrichtung zum sichten von schuettguetern
JPS51147059A (en) * 1975-06-13 1976-12-17 Nobuo Yoshimori Apparatus for classification
US4108778A (en) * 1976-02-25 1978-08-22 Lambert Steven J Self-cleaning filter and vortexer
DE2825400C2 (de) * 1978-06-09 1984-02-02 Omya Gmbh, 5000 Koeln Trennmaschine
DE2951819C2 (de) * 1979-12-21 1982-09-16 Omya GmbH, 5000 Köln Zentrifugalkraftsichter
JPS5980375A (ja) * 1982-10-27 1984-05-09 ラサ工業株式会社 多段遠心分級機
DE3303078C1 (de) * 1983-01-29 1984-05-30 Alpine Ag, 8900 Augsburg Windsichter fuer den Feinstbereich

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0226987A2 (de) * 1985-12-21 1987-07-01 O & K Orenstein & Koppel Aktiengesellschaft Vorrichtung zum Klassieren von staubförmigen Schüttgütern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19854855C2 (de) * 1998-11-27 2002-01-17 Hosokawa Alpine Ag & Co Windsichter
EP3677348B1 (de) 2018-12-13 2023-09-06 NETZSCH-Feinmahltechnik GmbH Fliehkraftsichter mit speziellem sichterrad

Also Published As

Publication number Publication date
ATE68113T1 (de) 1991-10-15
EP0244744A3 (en) 1989-05-17
DE3615494C2 (enrdf_load_stackoverflow) 1988-04-07
DE3615494A1 (de) 1987-11-12
JPS6328477A (ja) 1988-02-06
EP0244744A2 (de) 1987-11-11
DE3773530D1 (de) 1991-11-14
JPH0369590B2 (enrdf_load_stackoverflow) 1991-11-01
ES2026861T3 (es) 1992-05-16
GR3003247T3 (en) 1993-02-17
US4857178A (en) 1989-08-15

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