EP0836893A2 - Trieuse pneumatique à axe vertical - Google Patents

Trieuse pneumatique à axe vertical Download PDF

Info

Publication number
EP0836893A2
EP0836893A2 EP97116684A EP97116684A EP0836893A2 EP 0836893 A2 EP0836893 A2 EP 0836893A2 EP 97116684 A EP97116684 A EP 97116684A EP 97116684 A EP97116684 A EP 97116684A EP 0836893 A2 EP0836893 A2 EP 0836893A2
Authority
EP
European Patent Office
Prior art keywords
vertical
axis air
classifier according
air classifier
rotor
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
Application number
EP97116684A
Other languages
German (de)
English (en)
Other versions
EP0836893A3 (fr
EP0836893B1 (fr
Inventor
Georg Dipl.-Ing. Konetzka
Marcus Dipl.-Ing. Körbler
Stefano Dipl.-Ing. Zampini
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
Hosokawa 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
Priority claimed from DE1996143043 external-priority patent/DE19643043C2/de
Priority claimed from DE1996143068 external-priority patent/DE19643068C2/de
Priority claimed from DE1996143023 external-priority patent/DE19643023C2/de
Priority claimed from DE1996143042 external-priority patent/DE19643042C2/de
Application filed by Hosokawa Alpine AG filed Critical Hosokawa Alpine AG
Publication of EP0836893A2 publication Critical patent/EP0836893A2/fr
Publication of EP0836893A3 publication Critical patent/EP0836893A3/fr
Application granted granted Critical
Publication of EP0836893B1 publication Critical patent/EP0836893B1/fr
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 vertical-axis air classifier with a central good job with tangential air supply arranged at the level of the classifying rotor, with a fixed on the circumference of the classifying rotor arranged at a radial distance Guide vane ring, with a ring-shaped one through one Paddle wheel classifier rotor and a coaxial radial distance to the The outer circumference of the classifying rotor arranged guide vane ring limited Visual space, with a drive shaft for the classifier rotor mounted on one side and a housing with fine and coarse material outlet.
  • Such an air classifier in which the material to be viewed is arranged around an axis rotating wheel is set in rotating motion and with one from the outside inward running air flow into which the rotating visible material is added evenly over the circumference of the classifying wheel to the classifying zone known from German Offenlegungsschrift DE 35 21 638 A1.
  • the material to be sifted is fed in centrally and spread over a spreading plate distributed and bell-shaped over the outer circumference of the classifying rotor evenly distributed good veil passed past the classifier wheel blades.
  • the classifying wheel is flowed through by the classifying air from the outside in and that Fine material directed into the interior of the classifier rotor.
  • the rejected coarse material follows gravity continues and is surrounded by an annular coarse material discharge area added.
  • the cover plate together with the classifier wheel blades from an extended one, the classifier rotor penetrating part of the drive shaft.
  • the disadvantage is that the Inside the classifier rotor does not remain free of internals and therefore the flow in the Inside the classifier rotor is disturbed.
  • the classifier In order to be able to clean all areas within the classifier, the classifier must do so be completely disassembled into its individual parts. This is about the distribution of the functional connections such as drive, storage, good feed, fine material outlet and Coarse material escaping through several sides of the classifier housing is particularly difficult.
  • the visible material is affected by the action of gravity guided down along the classifier rotor. Except for the radial The material to be sifted essentially moves in turbulence Direction of gravity downwards.
  • the visible material is only the sifter offered once and for a short time. Due to the short dwell time of the material to be viewed on the classifier, the fine material cannot be completely diverted from the flow of classifying material and be sighted.
  • the rejected coarse material fraction therefore still contains significant proportions of fine grain. The quality of the coarse goods is therefore not optimal.
  • the vertical alignment of the classifier and the result in Visible material falling downward is an inconsistent Good concentration in the viewing zone, which means that the entire classifier rotor length is not can be used optimally.
  • the additional idea of the invention is the coarse material that has been sighted through a fluidize additional air flow and through a rotating ring disc to transport to the coarse goods outlet.
  • An additional, fixed ring prevents the finished coarse material from being returned to the viewing area.
  • Fig. 2 shows the cross section of an air classifier according to the invention with a perforated drive shaft.
  • the classifying air is supplied through the classifying air inlet 4 behind the guide vane ring 3 .
  • the annular coarse material discharge space 13 and the annular fine material discharge space 14 are arranged below the classifying wheel vane ring 9 coaxially with the drive shaft.
  • the lower cover plate 15 of the classifying rotor 8 is provided with openings and thereby opens the fine material outlet from the inside of the classifying rotor 8 into the fine material discharge space 14 .
  • the Feingutaustragsraum the penetrating portion of the drive shaft 2 as a perforated shaft member, the support means 10 is formed and thereby allows the passage of the fine material from the interior of the separator 8 in the Feingutaustragsraum fourteenth
  • This support device 10 comprises the base plate 18 , the washer 17 , and the aerodynamic spacer webs 10a and form a connecting link between the drive shaft 2 and classifier wheel 8 and the passages for the discharge of the fine material from the inside of classifier wheel 8 .
  • the classifier wheel 8 consists of the classifier wheel vane ring 9 , the lens 16 and the cover plate 15 and is rotatably connected to the support device 10 .
  • This connection in the area of the discs 15 and 17 can be designed releasably and z. B. by screws 19 arranged uniformly over the circumference of the classifying rotor.
  • a seal 20 that can be flushed with a fluid is shown in an axial arrangement and reliably separates the visible space 21 from the fine material outlet space 14 .
  • the lower cover disk 15 projects beyond the inner diameter of the annular disk 17 , and thus over the support device 10 into the interior, and thus forms an orifice with a throttling effect in the transition area.
  • the good feed takes place on the cover plate 16 of the classifying rotor 8 , which forms a diffusing plate.
  • the annular channel between the outer diameter of the classifying wheel 8 and the inner diameter of the guide vane ring 13 forms the classifying space 21 over the height of the classifying wheel 8 .
  • Visible material flows through the viewing space 21 in the vertical direction.
  • a screw spiral 29 extends almost over the entire radial width of the visible space 21 and extends over the entire height of the classifying wheel 8 .
  • a single helical screw with a constant pitch is used.
  • the sifting air flow runs perpendicular to the sifting material flow.
  • the classifying air from the classifying air inlet 22 passes horizontally through the fixed guide vane ring 3 into the classifying chamber 21 and flows through it perpendicularly to the classifying material flow.
  • the fine material sighted is discharged axially with the classifying air via the fine material outlet 23 .
  • the coarse material sighted is discharged through the coarse material discharge space 13 below the viewing space 21 via the coarse material outlet 24 .
  • the coarse material discharge ring 25 is fixedly connected to the classifying wheel 8 and rotates within the coarse material discharge space 13 .
  • the fixed retaining ring 26 is arranged above the coarse material discharge space 13 and is firmly connected to the housing 1 .
  • the gap 27 for the introduction of the scavenging air 28 is located between the bottom of the coarse material discharge space 13 and the coarse material discharge ring 25 .

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Gas Separation By Absorption (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Centrifugal Separators (AREA)
EP97116684A 1996-10-18 1997-09-25 Trieuse pneumatique à axe vertical Expired - Lifetime EP0836893B1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE1996143043 DE19643043C2 (de) 1996-10-18 1996-10-18 Schleuderrad-Windsichter mit radialem Feingutaustrag
DE1996143068 DE19643068C2 (de) 1996-10-18 1996-10-18 Windsichter mit Grobgutaustragsring
DE19643042 1996-10-18
DE19643043 1996-10-18
DE1996143023 DE19643023C2 (de) 1996-10-18 1996-10-18 Windsichter mit Grobgutwendel
DE19643068 1996-10-18
DE19643023 1996-10-18
DE1996143042 DE19643042C2 (de) 1996-10-18 1996-10-18 Vertikalachsiger Windsichter

Publications (3)

Publication Number Publication Date
EP0836893A2 true EP0836893A2 (fr) 1998-04-22
EP0836893A3 EP0836893A3 (fr) 1999-04-14
EP0836893B1 EP0836893B1 (fr) 2002-12-11

Family

ID=27438462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116684A Expired - Lifetime EP0836893B1 (fr) 1996-10-18 1997-09-25 Trieuse pneumatique à axe vertical

Country Status (8)

Country Link
US (1) US6109448A (fr)
EP (1) EP0836893B1 (fr)
JP (1) JP4191272B2 (fr)
CN (1) CN1118339C (fr)
AT (1) ATE229377T1 (fr)
DE (1) DE59708938D1 (fr)
DK (1) DK0836893T3 (fr)
ES (1) ES2190796T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933142A3 (fr) * 1998-01-28 2000-07-19 HOSOKAWA ALPINE Aktiengesellschaft & Co. OHG Procédé pour le tri pneumatique de toner

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6276534B1 (en) * 1998-04-03 2001-08-21 Hosokawa Micron Powder Systems Classifier apparatus for particulate matter/powder classifier
DE19854855C2 (de) * 1998-11-27 2002-01-17 Hosokawa Alpine Ag & Co Windsichter
US6776291B1 (en) * 2000-09-27 2004-08-17 Xerox Corporation Article and apparatus for particulate size separation
US7449275B2 (en) * 2004-09-21 2008-11-11 Kao Corporation Process for preparing toner
JP5072333B2 (ja) * 2006-12-05 2012-11-14 株式会社トクヤマデンタル 有機無機複合粉末の処理方法
US8231007B2 (en) * 2009-01-29 2012-07-31 Wark Rickey E Static classifier cage
CN101956765A (zh) * 2010-10-18 2011-01-26 洛阳栾川钼业集团股份有限公司 螺旋分级机齿轮轴
CN103127996A (zh) * 2011-11-29 2013-06-05 洛阳宇航重工机械有限公司 高效选粉机

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046442A (en) * 1933-04-08 1936-07-07 Curtis C Baldwin Separator
DE654741C (de) * 1933-12-10 1937-12-29 Fried Krupp Grusonwerk Akt Ges Prallsichter mit umlaufendem Rostkorb aus runden Staeben
US2329900A (en) * 1942-08-26 1943-09-21 Hermann Charles Edward Air separator
DE894803C (de) * 1947-02-07 1953-10-29 Alpine A G Eisengiesserei Vorrichtung und Verfahren zur Windsichtung
GB1114314A (en) * 1964-12-11 1968-05-22 Ass Portland Cement Improvements in or relating to centrifugal air classifiers
DE1607631A1 (de) * 1967-07-27 1970-10-22 Krupp Gmbh Windsichter
DE2556382C3 (de) * 1975-12-15 1985-06-27 Alpine Ag, 8900 Augsburg Zentrifugalwindsichter
JPS594477A (ja) * 1982-06-30 1984-01-11 日清製粉株式会社 粉体分級機
SU1238816A2 (ru) * 1983-09-14 1986-06-23 Всесоюзный Научно-Исследовательский Институт Комбикормовой Промышленности Инерционный сепаратор
DE3521638C2 (de) * 1985-06-15 1994-03-31 Kloeckner Humboldt Deutz Ag Streuwindsichter zum Sichten von feinkörnigem Gut
DD248970A1 (de) * 1985-12-31 1987-08-26 Akad Wissenschaften Ddr Zentrifugalwindsichter
DE3712136C1 (de) * 1987-04-10 1988-08-04 Omya Gmbh Zentrifugalkraftsichter
DE4014342C2 (de) * 1990-05-04 1994-06-23 Heinz Jaeger Windsichter
DE4112018A1 (de) * 1990-06-08 1991-12-12 Kloeckner Humboldt Deutz Ag Sichter
DE4140656C1 (fr) * 1991-12-10 1992-09-10 Alpine Ag, 8900 Augsburg, De
JP2897904B2 (ja) * 1992-11-10 1999-05-31 宇部興産株式会社 分級設備
DE4416034A1 (de) * 1994-05-06 1995-07-06 Krupp Foerdertechnik Gmbh Verfahren zur Sichtung von feinkörnigen Stoffen und Einrichtung für die Durchführung des Verfahrens
DE19513745A1 (de) * 1995-04-11 1996-10-17 Hosokawa Mikropul Ges Fuer Mah Klassierer
DE19629924C2 (de) * 1995-08-02 2001-04-12 Herbert Horlamus Vorrichtung und Verfahren zur Trennung von Teilchenströmen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933142A3 (fr) * 1998-01-28 2000-07-19 HOSOKAWA ALPINE Aktiengesellschaft & Co. OHG Procédé pour le tri pneumatique de toner

Also Published As

Publication number Publication date
CN1180591A (zh) 1998-05-06
ES2190796T3 (es) 2003-08-16
CN1118339C (zh) 2003-08-20
JPH10118571A (ja) 1998-05-12
EP0836893A3 (fr) 1999-04-14
US6109448A (en) 2000-08-29
EP0836893B1 (fr) 2002-12-11
ATE229377T1 (de) 2002-12-15
DE59708938D1 (de) 2003-01-23
JP4191272B2 (ja) 2008-12-03
DK0836893T3 (da) 2003-03-24

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