EP0195240B1 - Windsichter mit verschleissfreiem Sichtrad - Google Patents

Windsichter mit verschleissfreiem Sichtrad Download PDF

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Publication number
EP0195240B1
EP0195240B1 EP86101744A EP86101744A EP0195240B1 EP 0195240 B1 EP0195240 B1 EP 0195240B1 EP 86101744 A EP86101744 A EP 86101744A EP 86101744 A EP86101744 A EP 86101744A EP 0195240 B1 EP0195240 B1 EP 0195240B1
Authority
EP
European Patent Office
Prior art keywords
wear
blades
resistant
classifying
disc
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
EP86101744A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0195240A2 (de
EP0195240A3 (en
Inventor
Roland Dr.-Ing. Nied
Ekkehart Illigner
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.)
Hosokawa Alpine AG
Original Assignee
Alpine AG
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 Alpine AG filed Critical Alpine AG
Priority to AT86101744T priority Critical patent/ATE82532T1/de
Publication of EP0195240A2 publication Critical patent/EP0195240A2/de
Publication of EP0195240A3 publication Critical patent/EP0195240A3/de
Application granted granted Critical
Publication of EP0195240B1 publication Critical patent/EP0195240B1/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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • 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 wind classifier with a rotating classifying wheel against which it is blown by the classifying air from the outside inwards, with ring-shaped blades that run parallel to the axis of rotation, the ends of which are inserted into recesses of a circular wheel carrying the classifying wheel hub on the one hand and an annular cover plate on the other hand.
  • a classifier generally has a vertical-axis housing, which consists of a cylindrical upper part with the vertical or horizontal-axis classifying wheel arranged therein and a funnel-shaped lower part.
  • the material to be classified can be entered into the classifier together with the classifying air, e.g. B. in the classifier according to GB-A-927 876, or classifying material and classifying air are introduced separately into the classifier, as is the case, for. B. DE-C-17 57 582 shows.
  • the coarse material is in each case discharged through the lower opening of the lower housing part and the fine material is drawn off together with the classifying air from the classifying wheel through an outlet nozzle emerging upwards from the classifier.
  • the invention is therefore based on the object of improving an air classifier of the type required in such a way that wear-free classification is possible and thus also highly pure and / or highly abrasive substances can be processed.
  • blades made entirely of a wear-resistant ceramic material are suitable for use in the classifying wheel.
  • the preferred material is sintered corundum, but other ceramic materials, such as. B. zirconia. With a Mohs hardness of over 9, sintered corundum has excellent wear resistance with good mechanical strength properties and is proportionate easy to manufacture.
  • these inserts can be designed as rings with slots for the classifying wheel blades which are cut radially from their outer circumference.
  • the air classifier 1 has a vertical-axis housing, which consists of the cylindrical upper part 2 and the funnel-shaped lower part 3. To improve the efficiency of the sighting by inspecting the coarse material emerging downwards from the funnel-shaped lower part 3, a cylindrical container 4 with guide vanes 5 and outlet funnel 6 adjoining the funnel-shaped lower part 3 is provided, into which the sight air supply line 7 opens tangentially.
  • the classifying wheel 8 is arranged with a horizontal axis of rotation 9.
  • the classifying wheel 8 is seated on the shaft 10, which is mounted in a bearing housing 11 which is laterally attached to the upper part 2. and is driven via the pulley 12 by a motor, not shown here.
  • the outlet opening 28 of the classifying wheel 8 for the fine air laden visual air opens into the double-walled tube 13, to the flange 14 of which a separator for the fine material is connected via a pipe (not shown here)
  • the flow direction of the incoming sight air is determined by the vertically aligned guide vanes 5.
  • An airtight discharge element e.g. B. a cell lock (not shown), fir the discharged, falling down coarse material is attached to the flange of the discharge funnel 6 during operation of the air classifier 1.
  • the visible material is fed via a pipe 15 from a metering device.
  • the connecting piece 16 and the outer chamber 17 of the tube 13 are used to supply purge air into the gap between the classifying wheel 8 and the flange 18 of the tube 13.
  • Upper part 2 and lower part 3 are screwed to the support plate 19, with the air classifier 1 on a frame, a stage or the like can be attached.
  • the classifying wheel 8 (FIG. 2) consists of the circular disk 20 carrying the classifying wheel hub, the annular cover disk 21, the axial distance between which is determined by the spacer bolts 24 held by screws 22, 23, and the blades 25 made of sintered corundum axial play in annular recesses of circular disk 20 and cover disk 21.
  • Rings 26 made of a rubber-elastic, wear-resistant material fitted into the recesses with slots machined from their outer circumference fix the blades 25 in their mutual position and support them radially against circular disk 20 and cover disk 21 .
  • the spacer bolts 24 are surrounded by sintered corundum sleeves 27, which, like the blades 25, have axial play and their ends are seated in suitable recesses in the rings 26. All surfaces of the circular disk 20 and cover disk 21 that come into contact with the visible material are coated with a wear-resistant ceramic material (not shown) and the aperture-shaped outlet opening 28 in the cover disk 21 has a diameter that is only about 40 percent of that of the outer edges of the ring-shaped arranged blades 25 of a certain diameter. To protect the screws 22, a ring 29 made of the same material as the rings 26 is inserted into the circular disk 20.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
EP86101744A 1985-03-13 1986-02-12 Windsichter mit verschleissfreiem Sichtrad Expired - Lifetime EP0195240B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86101744T ATE82532T1 (de) 1985-03-13 1986-02-12 Windsichter mit verschleissfreiem sichtrad.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3508889 1985-03-13
DE3508889A DE3508889C1 (de) 1985-03-13 1985-03-13 Windsichter mit verschleissfreiem Sichtrad

Publications (3)

Publication Number Publication Date
EP0195240A2 EP0195240A2 (de) 1986-09-24
EP0195240A3 EP0195240A3 (en) 1988-11-30
EP0195240B1 true EP0195240B1 (de) 1992-11-19

Family

ID=6265015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86101744A Expired - Lifetime EP0195240B1 (de) 1985-03-13 1986-02-12 Windsichter mit verschleissfreiem Sichtrad

Country Status (5)

Country Link
US (1) US4786406A (enrdf_load_stackoverflow)
EP (1) EP0195240B1 (enrdf_load_stackoverflow)
JP (1) JPS61212370A (enrdf_load_stackoverflow)
AT (1) ATE82532T1 (enrdf_load_stackoverflow)
DE (1) DE3508889C1 (enrdf_load_stackoverflow)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD257212A1 (de) * 1987-01-22 1988-06-08 Dessau Zementanlagenbau Veb Windsichter zur sichtung von schuettguetern feinster koernung
DE3712136C1 (de) * 1987-04-10 1988-08-04 Omya Gmbh Zentrifugalkraftsichter
DE3800843A1 (de) * 1987-11-23 1989-06-01 Kloeckner Humboldt Deutz Ag Turbo-windsichter
DE3838871C2 (de) * 1988-01-22 1994-10-27 Nied Roland Windsichter
EP0369399B1 (de) * 1988-11-17 1994-08-10 Roland Dr.-Ing. Nied Windsichter
DE3928292A1 (de) * 1989-08-26 1991-02-28 Nied Roland Verschleissanzeige
DE4025247A1 (de) * 1990-08-09 1992-02-13 Nied Roland Windsichter
US5252110A (en) * 1990-08-01 1993-10-12 Roland Nied Preferably vertical air separator
DE4135879C2 (de) * 1991-10-31 1995-02-23 Netzsch Erich Holding Sichterrad
DE4140656C1 (enrdf_load_stackoverflow) * 1991-12-10 1992-09-10 Alpine Ag, 8900 Augsburg, De
DE4234440C2 (de) * 1992-10-13 1995-03-30 Peter Prof Dr Ing Dietz Zentrifugalkraftsichter
DE4419522B4 (de) * 1994-06-03 2006-06-29 Hosokawa Alpine Ag Sichtrad für Schleuderrad-Windsichter
DE29506015U1 (de) * 1995-04-07 1995-06-14 Hosokawa Alpine Ag, 86199 Augsburg Sichtrad für Schleuderrad-Windsichter
DE19613876C2 (de) * 1996-04-06 1998-08-06 Hosokawa Alpine Ag Windsichter mit austauschbarem Schaufelkorb
DE19903948C2 (de) * 1999-02-02 2002-07-18 Hosokawa Alpine Ag & Co Zentrifugalkraft-Sichterrad
JP4540157B2 (ja) * 1999-11-29 2010-09-08 株式会社ブリヂストン 高圧気流式粉砕装置
US6776291B1 (en) * 2000-09-27 2004-08-17 Xerox Corporation Article and apparatus for particulate size separation
JP2002126650A (ja) * 2000-10-30 2002-05-08 Toshiba Tungaloy Co Ltd 分級ロータ
JP4832829B2 (ja) * 2005-08-02 2011-12-07 株式会社ブリヂストン 気流式粉砕装置、分級ローター、及び分級ローター用羽根ピン
DE102009020713A1 (de) † 2009-05-11 2010-11-18 Pallmann Maschinenfabrik Gmbh & Co Kg Vorrichtung zum Trennen von Aufgabegut in Feingut und Grobgut
JP5297507B2 (ja) * 2011-08-29 2013-09-25 株式会社ブリヂストン 分級ローター用羽根ピンの製造方法
CN107661807A (zh) * 2017-09-30 2018-02-06 程文利 一种高速回流制粉机
CN108187868B (zh) * 2018-02-11 2024-06-25 北京石研科技有限公司 一种用于离心碰撞粉碎机的飞轮和离心碰撞粉碎机
DE102018132155B3 (de) 2018-12-13 2019-12-12 Netzsch-Feinmahltechnik Gmbh Fliehkraftsichter mit speziellem sichterrad

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8530C (de) * L. J. BENNETT in Buffalo (V. St. A.) Neuerungen an Schlagstiftmaschinen
US2100734A (en) * 1936-02-05 1937-11-30 Comb Eng Co Inc Mill and classifier
US2269412A (en) * 1940-07-18 1942-01-06 Sturtevant Mill Co Air separator
GB927876A (en) * 1960-10-21 1963-06-06 Ass Portland Cement Improved mechanical air classifier
DE1167634B (de) * 1961-07-12 1964-04-09 Alpine Ag Maschinenfabrik Und Sichter mit Sichtrad
US3384238A (en) * 1966-02-17 1968-05-21 Air Sifters Inc Classifying system
DE1757582C2 (de) * 1968-05-20 1976-03-11 The Georgia Marble Co., Atlanta, .Ga. (V.St.A.) Schleuderkorb-Windsichter
DE7128366U (de) * 1971-07-23 1971-10-28 Polysius Ag Windsichter zum sichten stark schleissender gueter
USRE27742E (en) * 1972-01-17 1973-08-28 Centrifugal classifier
US4124321A (en) * 1976-04-06 1978-11-07 B.B.R. Australia Pty. Ltd. Adjustable tie rod holder
AU538322B2 (en) * 1979-10-29 1984-08-09 Rockwell International Inc. Composite centrifugal impeller
FR2475113A1 (fr) * 1980-02-04 1981-08-07 Rockwell International Corp Rotor ceramique pour turbine
DE3038625A1 (de) * 1980-10-13 1982-05-19 Fa. Christian Pfeiffer, 4720 Beckum Drehluft-fliehkraft-streusichter
DE8224628U1 (de) * 1982-09-01 1983-03-03 Schön, Christian O., 7590 Achern Hochleistungsgeblaese oder -verdichter fuer aggressive und/oder heisse gase
DE3303078C1 (de) * 1983-01-29 1984-05-30 Alpine Ag, 8900 Augsburg Windsichter fuer den Feinstbereich
US4570545A (en) * 1983-09-19 1986-02-18 The Budd Company Connecting means for a stanchion in a railway car
ATE38708T1 (de) * 1984-05-24 1988-12-15 Moh 9 Proprietary Limited Fluegelrad fuer pumpe.

Also Published As

Publication number Publication date
ATE82532T1 (de) 1992-12-15
EP0195240A2 (de) 1986-09-24
EP0195240A3 (en) 1988-11-30
JPH0323233B2 (enrdf_load_stackoverflow) 1991-03-28
DE3508889C1 (de) 1992-02-20
US4786406A (en) 1988-11-22
JPS61212370A (ja) 1986-09-20

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