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EP0250921A2 - Séparateur pneumatique - Google Patents

Séparateur pneumatique Download PDF

Info

Publication number
EP0250921A2
EP0250921A2 EP87108132A EP87108132A EP0250921A2 EP 0250921 A2 EP0250921 A2 EP 0250921A2 EP 87108132 A EP87108132 A EP 87108132A EP 87108132 A EP87108132 A EP 87108132A EP 0250921 A2 EP0250921 A2 EP 0250921A2
Authority
EP
European Patent Office
Prior art keywords
air
rotor
classifying
spiral
fine
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
EP87108132A
Other languages
German (de)
English (en)
Other versions
EP0250921A3 (en
EP0250921B1 (fr
Inventor
Gotthardt Dipl.-Ing. Blasczyk
Heinrich Dipl.-Ing. Henne
Hubert Dipl.-Ing. Eickholt
Otte Dipl.-Ing. Heinemann
Norbert Bredenhöller
Peter Dipl.-Ing. Tiggesbäumker
Ludger Dipl.-Ing. Kimmeyer
Michael Dr.-Ing. Von Seebach
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius 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 Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0250921A2 publication Critical patent/EP0250921A2/fr
Publication of EP0250921A3 publication Critical patent/EP0250921A3/de
Application granted granted Critical
Publication of EP0250921B1 publication Critical patent/EP0250921B1/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
    • 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
    • B07B11/04—Control arrangements

Definitions

  • the invention relates to a classifier according to the preamble of claim 1.
  • a classifier according to the preamble of claim 1 is known for example from US-A-4296864.
  • the visible space is formed here by the annular space which is present between the stationary air guiding elements arranged at the outlet end of the classifying air supply spiral and the rotor blades.
  • the visible material is placed on the upper face of the rotor, carried outwards and redirected into the viewing space, which it then travels from top to bottom. While the coarse material falls out of the viewing area downwards, the fine material is taken into the rotor by the classifying air and leaves the rotor together with the classifying air through the upper or lower end face.
  • the invention has for its object to develop a classifier according to the preamble of claim 1 to the effect that the selectivity is improved and in particular entrainment of coarse material is avoided by the fine air loaded with sifting air.
  • the spiral for supplying the classifying air is therefore divided by dividing walls into at least two channels one above the other, from which the classifying air flows into the classifying room at different heights. This prevents the sight air from penetrating only part of the height of the sight space.
  • the individual channels with elements for adjusting the amount and / or Ge speed of the air supplied through the individual channels.
  • the amount and / or the speed of the sight air flowing into the individual height areas of the sight space can be optimally adapted to the respective conditions, in particular the load in the individual sight space areas. If the distribution of the classifying air in the vertical direction is controlled and adjusted in this way before entering the classifying room, it is particularly avoided that the classifying air flows into the lower area of the classifying room and leads to undesired entrainment of coarse particles into the fine material room, while the sighting in the upper area of the visual space is deteriorated at the same time.
  • the setting option according to the invention can therefore achieve a significant improvement in the separating power of the classifier.
  • the housing of the sifter shown contains in the upper area a spiral 1 for supplying the viewing air, which opens tangentially into the viewing space 2 and is divided into two channels 5, 6 and 7, one above the other, by two horizontal dividing walls 3, 4.
  • elements designed as adjustable flaps 8, 9, 10 are provided for setting the amount of air supplied to the individual channels 5, 6, 7.
  • the flaps 8, 9, 10 arranged in pairs are actuated, for example, via setting levers 11 and chains 12, the flaps 8, 9 and 10 being adjustable independently of one another.
  • a rotor 13 is arranged in the classifier housing and can be rotated about a vertical axis 14 and is driven via a shaft 15 by a motor (not illustrated) arranged on the classifier housing.
  • the rotor 13 is covered on its circumference with rotor blades 16 which are supported by ring disks 17 which are connected via webs 18 to a bush 19 surrounding the shaft 15.
  • the shaft 15 is supported at the lower end in a bearing 20 which is supported by radial struts 21.
  • the lower end face of the rotor 13 is open and has radially extending struts 22.
  • the upper end face of the rotor 13 is formed by a plate 23 which carries radially arranged distributor strips 24 on its upper side.
  • a deflection ring 27 is provided at a distance from the circumference of the plate 23, which deflects the visible material thrown off the plate 23 downward into the viewing space 2.
  • the classifier housing is provided with a funnel 28 for removing the coarse material. Furthermore, there is a further funnel 29 below the open lower end face of the rotor 13, to which a plurality of connections 30 (for example four connections 30 evenly distributed on the circumference) are connected in the exemplary embodiment shown.
  • Air guiding elements 31 are provided at the outlet end of the spiral 1 for supplying the classifying air. As FIG. 2 shows, these air guide elements 31 are inclined in the sense of the flow direction of the viewing air flowing approximately tangentially into the viewing space 2.
  • the visible material which is fed in via the air conveyor trough 25 and the distributor bell 26 in a uniform distribution to the center of the plate 23 is conveyed outwards by the movement of the rotor 13 and is thereby evened out by the distributor strips 24.
  • the visible material is thrown off the plate 23 with a moderate radial speed component and deflected downward by the deflection ring 27. It then penetrates the view space 2 from top to bottom in the form of a uniform good veil.
  • the classifying air is supplied to the spiral 1 via the channels 5, 6 and 7, the amount of classifying air flowing into the individual height areas of the classifying area 2 being optimally adapted to the respective conditions by adjusting the flaps 8, 9 and 10. Since there is generally a larger load in the upper area of the viewing space 2, it is usually expedient to operate the upper duct 5 with a larger amount of air than the lower duct 7.
  • the fine and coarse goods are separated. While the coarse material falls down and is discharged through the funnel 28, the fine material together with the classifying air reaches the interior of the rotor 13 and is discharged via the connections 30.
  • the air guiding elements 31 at the outlet end the spiral 1 serve to maintain the swirl of the air flow, while the rotor blades 16 primarily fulfill the task of preventing coarse material particles adhering to the fine material from entering the interior of the rotor 13.
  • the sifted air discharged via the connections 30 and loaded with fine material reaches one or more external separators, in which the fine material (finished product) is separated from the sifted air.
  • the classifying air can then be fed to the spiral 1 again via an external air circulation fan (air circulation mode). Instead, however, it is also possible to discard the fine air that has been freed from the fine material (possibly after further dedusting) and to suck in the clear air from the environment (one pass of the clear air through the classifier).
  • the fine air loaded with fine material can also be drawn off through the upper end of the rotor.
  • a system of channels arranged in a star shape is expediently provided on the upper end face of the rotor instead of a closed plate 23, which are only open at their inner and outer ends and through which the visible material fed centrally via the distributor bell 26 is fed to the viewing space 2 .
  • the spiral 1 is arranged in three above one another Nete channels 5, 6 and 7 is divided, it is of course also possible within the scope of the invention to provide only two or more than three channels.
  • the spiral 1 also has a second air inlet opening 32, which is offset on the circumference by approximately 180 ° with respect to the other air inlet opening 33. Also in the area of this second air inlet opening 32, elements (e.g. flaps) are provided for setting the amount of air supplied through the individual channels. Such additional air inlet openings promote the maintenance of the swirl with which the classifying air enters the classroom 2.
  • the setting option according to the invention not only achieves a significant improvement in the separating power of the classifier, but it also reduces the specific air requirement of the classifier overall, which enables considerable energy savings.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
EP87108132A 1986-07-03 1987-06-04 Séparateur pneumatique Expired - Lifetime EP0250921B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3622413A DE3622413C2 (de) 1986-07-03 1986-07-03 Sichter
DE3622413 1986-07-03

Publications (3)

Publication Number Publication Date
EP0250921A2 true EP0250921A2 (fr) 1988-01-07
EP0250921A3 EP0250921A3 (en) 1989-08-30
EP0250921B1 EP0250921B1 (fr) 1995-12-27

Family

ID=6304341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87108132A Expired - Lifetime EP0250921B1 (fr) 1986-07-03 1987-06-04 Séparateur pneumatique

Country Status (5)

Country Link
US (1) US4792393A (fr)
EP (1) EP0250921B1 (fr)
DE (2) DE3622413C2 (fr)
ES (1) ES2080716T3 (fr)
IN (1) IN170755B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374491A2 (fr) * 1988-12-22 1990-06-27 Krupp Polysius Ag Séparateur pneumatique
EP0734787A1 (fr) * 1995-03-28 1996-10-02 OMYA GmbH Montage de l'arbre d'un séparateur pneumatique centrifuge
CN106061630B (zh) * 2014-02-01 2019-03-29 Khd洪保德韦达克有限公司 环形的阶梯式筛分器与连接在下游的吊篮式筛分器

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3808023A1 (de) * 1988-03-10 1989-09-21 Krupp Polysius Ag Sichter
DE3808022A1 (de) * 1988-03-10 1989-09-21 Krupp Polysius Ag Sichter
DE4014342C2 (de) * 1990-05-04 1994-06-23 Heinz Jaeger Windsichter
DE9015363U1 (de) * 1990-11-08 1991-01-17 Christian Pfeiffer Maschinenfabrik GmbH & Co KG, 4720 Beckum Vorrichtung zur Materialdispergierung
DE19511313C2 (de) * 1995-03-28 1997-07-17 Gkn Walterscheid Getriebe Gmbh Schalteinrichtung für ein Zahnradgetriebe
FR2741286B1 (fr) * 1995-11-21 1998-01-23 Fcb Separateur a air a action centrifuge
DE19606672A1 (de) * 1996-02-22 1997-08-28 Krupp Polysius Ag Sichter
DE19708956A1 (de) * 1997-03-05 1998-09-10 Krupp Polysius Ag Sichter
DE19811385C2 (de) * 1998-03-16 2003-08-28 Motan Materials Handling Gmbh Granulatstrom-Aufteiler für Gegenstromsichter
DE10022536A1 (de) * 2000-05-09 2001-11-29 Loesche Gmbh Mühlensichter
EP1561519A1 (fr) * 2004-02-04 2005-08-10 Magotteaux International S.A. Séparateur de matière granuleuse
DE102006044833B4 (de) * 2006-09-20 2010-01-21 Babcock Borsig Service Gmbh Zentrifugalsichter und Verfahren zum Sichten
US8172088B2 (en) * 2010-03-08 2012-05-08 Laitram, L.L.C. Air separator
WO2014117031A1 (fr) 2013-01-24 2014-07-31 Lp Amina Llc Dispositif de classification
US20170136498A1 (en) * 2014-03-31 2017-05-18 Hosokawa Micron Corporation Classifier
CN109821744B (zh) * 2019-03-05 2021-02-19 无锡锡麦粮油装备工程有限公司 一种清粉机用风量调节装置
CN111774304A (zh) * 2020-06-30 2020-10-16 湖北北新建材有限公司 一种自动分离石膏中大颗粒的装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015392A (en) * 1959-08-14 1962-01-02 Microcyclomat Co Vertical feed centripetal classifier
DE1130261B (de) * 1957-08-06 1962-05-24 Zentrales Projektierungsbuero Vorrichtung zum Entstauben, Aussortieren, Trocknen, Befeuchten sowie chemischen Behandeln feinstueckiger Stoffe, insbesondere Haecksel von Einjahres-pflanzen u. dgl.
EP0023320A1 (fr) * 1979-07-17 1981-02-04 Onoda Cement Company, Ltd. Séparateur sélectif d'air
SU816574A1 (ru) * 1979-06-29 1981-03-30 Всесоюзный Научно-Исследовательскийинститут Цементного Машиностроения Воздушный сепаратор
US4260478A (en) * 1978-11-24 1981-04-07 Kabushiki Kaisha Hosokawa Funtai Kogaku Kenkyusho Apparatus for classifying particles
EP0199003A2 (fr) * 1985-04-25 1986-10-29 Christian Pfeiffer Maschinenfabrik GmbH & Co. Kommanditgesellschaft Trieur à air rotatif avec cage centrifuge

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913109A (en) * 1956-05-07 1959-11-17 Williams Patent Crusher & Pulv Air seal for separating devices
DE1112382B (de) * 1958-01-16 1961-08-03 Jakob Heyd Aufrechtstehender Fliehkraft-Umluftsichter mit einem mit Gefaelle in den Sichtraum fuehrenden Sichtgut-Aufgaberohr
AT232452B (de) * 1960-12-21 1964-03-25 Escher Wyss Ag Umwälzstreusichter
US3372805A (en) * 1965-12-29 1968-03-12 Microcyclomat Co Fine particle classifier
US3503502A (en) * 1968-09-26 1970-03-31 Harlan J Donelson Jr Particulate material cleaner
DE2817725A1 (de) * 1978-04-22 1979-11-08 Polysius Ag Windsichter
US4551241A (en) * 1984-02-08 1985-11-05 Sturtevant, Inc. Particle classifier
DE3538832A1 (de) * 1985-10-31 1987-05-07 Krupp Polysius Ag Umluftsichter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130261B (de) * 1957-08-06 1962-05-24 Zentrales Projektierungsbuero Vorrichtung zum Entstauben, Aussortieren, Trocknen, Befeuchten sowie chemischen Behandeln feinstueckiger Stoffe, insbesondere Haecksel von Einjahres-pflanzen u. dgl.
US3015392A (en) * 1959-08-14 1962-01-02 Microcyclomat Co Vertical feed centripetal classifier
US4260478A (en) * 1978-11-24 1981-04-07 Kabushiki Kaisha Hosokawa Funtai Kogaku Kenkyusho Apparatus for classifying particles
SU816574A1 (ru) * 1979-06-29 1981-03-30 Всесоюзный Научно-Исследовательскийинститут Цементного Машиностроения Воздушный сепаратор
EP0023320A1 (fr) * 1979-07-17 1981-02-04 Onoda Cement Company, Ltd. Séparateur sélectif d'air
EP0199003A2 (fr) * 1985-04-25 1986-10-29 Christian Pfeiffer Maschinenfabrik GmbH & Co. Kommanditgesellschaft Trieur à air rotatif avec cage centrifuge

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, Woche E01, 17. Feburar 1982, Zusammenfassung Nr. A1632, Derwent Publications Ltd, Londen, GB; & SU-A-816 574 (CEMENT ENG. RES. INST.) 30-03-1981 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374491A2 (fr) * 1988-12-22 1990-06-27 Krupp Polysius Ag Séparateur pneumatique
EP0374491A3 (fr) * 1988-12-22 1991-12-11 Krupp Polysius Ag Séparateur pneumatique
EP0734787A1 (fr) * 1995-03-28 1996-10-02 OMYA GmbH Montage de l'arbre d'un séparateur pneumatique centrifuge
CN106061630B (zh) * 2014-02-01 2019-03-29 Khd洪保德韦达克有限公司 环形的阶梯式筛分器与连接在下游的吊篮式筛分器

Also Published As

Publication number Publication date
EP0250921A3 (en) 1989-08-30
IN170755B (fr) 1992-05-16
DE3622413C2 (de) 1995-08-03
EP0250921B1 (fr) 1995-12-27
DE3751648D1 (de) 1996-02-08
ES2080716T3 (es) 1996-02-16
US4792393A (en) 1988-12-20
DE3622413A1 (de) 1988-01-07

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