EP0472930A3 - Pneumatic classifier, preferably a vertical one - Google Patents

Pneumatic classifier, preferably a vertical one Download PDF

Info

Publication number
EP0472930A3
EP0472930A3 EP19910112707 EP91112707A EP0472930A3 EP 0472930 A3 EP0472930 A3 EP 0472930A3 EP 19910112707 EP19910112707 EP 19910112707 EP 91112707 A EP91112707 A EP 91112707A EP 0472930 A3 EP0472930 A3 EP 0472930A3
Authority
EP
European Patent Office
Prior art keywords
connecting piece
outlet connecting
classifying
outlet
cover plate
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
EP19910112707
Other languages
German (de)
Other versions
EP0472930B1 (en
EP0472930A2 (en
Inventor
Roland Dr.-Ing. Nied
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.)
Individual
Original Assignee
Individual
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 DE4024440A external-priority patent/DE4024440A1/en
Priority claimed from DE4025247A external-priority patent/DE4025247A1/en
Application filed by Individual filed Critical Individual
Publication of EP0472930A2 publication Critical patent/EP0472930A2/en
Priority claimed from US07/900,310 external-priority patent/US5244481A/en
Publication of EP0472930A3 publication Critical patent/EP0472930A3/en
Application granted granted Critical
Publication of EP0472930B1 publication Critical patent/EP0472930B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • 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
    • B07B11/06—Feeding or discharging arrangements

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Centrifugal Separators (AREA)
  • Steroid Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Confectionery (AREA)

Abstract

The subject of the invention is a preferably vertical pneumatic classifier, having a rotating classifying wheel (11) against which the classifying air which is loaded with fine material flows radially from the outside to the inside counter to the centrifugal force. The classifying air flows off out of the classifying wheel axially through an outlet connecting piece (20), in order to be supplied to a further evaluation, for example in a filter or the like. The classifying wheel has an outflow-side second cover plate which is offset axially with respect to said wheel and has blades arranged between the cover plates, on their outer circumference. The outlet connecting piece (20) which leads away from the classifying wheel (11) opens into an outlet chamber (21), the cross-section of which is significantly larger than the cross-section of the outlet connecting piece (20) so that there is a sudden change in the cross-section between the outlet connecting piece and outlet chamber. The clear height between the outflow-side cover plate (1) and second cover plate (2) of the classifying wheel preferably changes from the outlet edges of the blades (3) to the outlet connecting piece (5) in the form of an increase. In addition, the outlet connecting piece (5, 6, 18) is to be preferably inserted with an immersion pipe section (5, 6) as far as into the outflow-side cover plate (1) and connected fixed in terms of rotation to the latter.
EP91112707A 1990-08-01 1991-07-29 Pneumatic classifier, preferably a vertical one Expired - Lifetime EP0472930B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4024440 1990-08-01
DE4024440A DE4024440A1 (en) 1990-08-01 1990-08-01 Vertical winnowing machine impeller with curved vanes - has step formed between impeller outlet duct and outlet chamber
DE4025247 1990-08-09
DE4025247A DE4025247A1 (en) 1990-08-09 1990-08-09 Turbine-type air sifter - has lower end plate of rotor dished so that distance between end plates increases towards centre
US07/900,310 US5244481A (en) 1990-08-01 1992-06-18 Preferably vertical air separator

Publications (3)

Publication Number Publication Date
EP0472930A2 EP0472930A2 (en) 1992-03-04
EP0472930A3 true EP0472930A3 (en) 1992-10-21
EP0472930B1 EP0472930B1 (en) 1996-10-16

Family

ID=27201521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112707A Expired - Lifetime EP0472930B1 (en) 1990-08-01 1991-07-29 Pneumatic classifier, preferably a vertical one

Country Status (6)

Country Link
US (1) US5252110A (en)
EP (1) EP0472930B1 (en)
JP (1) JP3326188B2 (en)
AT (1) ATE144169T1 (en)
DE (1) DE59108284D1 (en)
ES (1) ES2093052T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616742B (en) * 2006-10-16 2013-08-21 耐驰-康多克斯研磨技术有限责任公司 Method for producing very fine particles and jet mill therefor and wind separator and operating method thereof

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4423815C2 (en) * 1994-07-06 1996-09-26 Loesche Gmbh Mill classifier
CN1054318C (en) * 1994-11-23 2000-07-12 李俊治 Air-flow grading machine
DE102006017472A1 (en) * 2006-04-13 2007-10-18 Nied, Roland, Dr. Ing. Method for producing finest particles by means of a jet mill
DE102006023193A1 (en) * 2006-05-17 2007-11-22 Nied, Roland, Dr.-Ing. Method for producing finest particles by means of a jet mill
DE102006048850A1 (en) * 2006-10-16 2008-04-17 Evonik Degussa Gmbh Amorphous submicron particles
DE102006048865A1 (en) * 2006-10-16 2008-04-17 Roland Dr. Nied Process for the production of finest particles and jet mill therefor and air classifier and operating method thereof
DE102007052269A1 (en) 2007-11-02 2009-05-07 Evonik Degussa Gmbh Precipitated silicic acids for storage-stable RTV-1 silicone rubber formulations without stabilizer
ES2424219T3 (en) 2009-02-13 2013-09-30 Evonik Degussa Gmbh A thermal insulation material comprising precipitated silica
DE102009045116A1 (en) * 2009-09-29 2011-03-31 Evonik Degussa Gmbh Niederdruckvermahlungsverfahren
DE102017209874A1 (en) 2017-06-12 2018-12-13 Evonik Degussa Gmbh Process for the preparation of wax-coated silica
CN110479593A (en) * 2019-09-05 2019-11-22 贵州省机电研究设计院 A kind of tea-leaf wind selection equipment

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968401A (en) * 1956-09-05 1961-01-17 American Marietta Co Air classifier
US3237766A (en) * 1960-10-21 1966-03-01 Ass Portland Cement Mechanical air classifier
GB1075005A (en) * 1964-12-11 1967-07-05 Ass Portland Cement Improvements in or relating to centrifugal air classifiers
DE1507706A1 (en) * 1966-01-11 1969-07-17 Isler Dipl Ing Walter Spreader sifter with circulating air fan
EP0159766A2 (en) * 1984-03-13 1985-10-30 Hosokawa Micron International Inc. Particulate classifying apparatus
EP0195240A2 (en) * 1985-03-13 1986-09-24 Alpine Aktiengesellschaft Pneumatic classifier with a wear-resisting classifying rotor
DE3638915A1 (en) * 1985-12-31 1987-07-02 Thaelmann Schwermaschbau Veb Centrifugal air classifier
DE3814458A1 (en) * 1988-04-28 1989-11-09 Krupp Polysius Ag Air separator
EP0369399A2 (en) * 1988-11-17 1990-05-23 Roland Dr.-Ing. Nied Wind sifter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US978450A (en) * 1909-10-12 1910-12-13 Jacobus J Homans Apparatus for separating scum and precipitates from sugar-juice.
US1847648A (en) * 1929-05-20 1932-03-01 Harkom John Frederick Foam breaker
US2478466A (en) * 1946-01-23 1949-08-09 Francis J Dohrer Air cleaner
US4198218A (en) * 1979-03-23 1980-04-15 Kobe, Inc. Gas separation apparatus
DE3712136C1 (en) * 1987-04-10 1988-08-04 Omya Gmbh Centrifugal classifier
FR2625925B1 (en) * 1988-01-18 1991-11-15 Onoda Cement Co Ltd POWDER SORTING DEVICE

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968401A (en) * 1956-09-05 1961-01-17 American Marietta Co Air classifier
US3237766A (en) * 1960-10-21 1966-03-01 Ass Portland Cement Mechanical air classifier
GB1075005A (en) * 1964-12-11 1967-07-05 Ass Portland Cement Improvements in or relating to centrifugal air classifiers
DE1507706A1 (en) * 1966-01-11 1969-07-17 Isler Dipl Ing Walter Spreader sifter with circulating air fan
EP0159766A2 (en) * 1984-03-13 1985-10-30 Hosokawa Micron International Inc. Particulate classifying apparatus
EP0195240A2 (en) * 1985-03-13 1986-09-24 Alpine Aktiengesellschaft Pneumatic classifier with a wear-resisting classifying rotor
DE3638915A1 (en) * 1985-12-31 1987-07-02 Thaelmann Schwermaschbau Veb Centrifugal air classifier
DE3814458A1 (en) * 1988-04-28 1989-11-09 Krupp Polysius Ag Air separator
EP0369399A2 (en) * 1988-11-17 1990-05-23 Roland Dr.-Ing. Nied Wind sifter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616742B (en) * 2006-10-16 2013-08-21 耐驰-康多克斯研磨技术有限责任公司 Method for producing very fine particles and jet mill therefor and wind separator and operating method thereof

Also Published As

Publication number Publication date
JP3326188B2 (en) 2002-09-17
EP0472930B1 (en) 1996-10-16
JPH04227092A (en) 1992-08-17
DE59108284D1 (en) 1996-11-21
EP0472930A2 (en) 1992-03-04
US5252110A (en) 1993-10-12
ES2093052T3 (en) 1996-12-16
ATE144169T1 (en) 1996-11-15

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