EP1004366A2 - Séparateur pneumatique - Google Patents

Séparateur pneumatique Download PDF

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Publication number
EP1004366A2
EP1004366A2 EP99123117A EP99123117A EP1004366A2 EP 1004366 A2 EP1004366 A2 EP 1004366A2 EP 99123117 A EP99123117 A EP 99123117A EP 99123117 A EP99123117 A EP 99123117A EP 1004366 A2 EP1004366 A2 EP 1004366A2
Authority
EP
European Patent Office
Prior art keywords
rotor
classifier
air classifier
air
rotors
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
EP99123117A
Other languages
German (de)
English (en)
Other versions
EP1004366A3 (fr
EP1004366B1 (fr
Inventor
Stefano Dipl.-Ing. Zampini (Fh)
Marcus Dipl.-Ing. Adam (Tu)
Georg Dipl.-Ing. Ing. Konetzka (Grad.)
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
Application filed by Hosokawa Alpine AG filed Critical Hosokawa Alpine AG
Publication of EP1004366A2 publication Critical patent/EP1004366A2/fr
Publication of EP1004366A3 publication Critical patent/EP1004366A3/fr
Application granted granted Critical
Publication of EP1004366B1 publication Critical patent/EP1004366B1/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 an air classifier for classifying granular material in three Fractions according to the preamble of claim 1.
  • DE 41 12 018 A1 describes a classifier for classifying granular material known at least three fractions, in a vertically arranged housing has several classifier wheels, which are nested concentrically and with Are spaced from each other. With this classifier, the classifier wheels one after the other flows through the classifying air and each classifier wheel is its own Good discharge assigned.
  • the classifying wheels are in the The housing is mounted separately and can be driven independently of one another. At a such sifter takes place in the first sighting stage on the outermost sifter wheel largest diameter the first sighting, the fine and medium fractions of the coarse fraction are separated. The other fine fractions are there exclusively from the fine and medium fractions obtained from the first level of vision won. The coarse fraction is therefore only subject to a single level of vision. Would like to to get a high-quality coarse material is an intensive screening of the coarse goods necessary.
  • the air classifier from the German patent DE 40 40 890 C1 is used for this Feed material with an optimized visual efficiency in at least three To divide material flows of different grain size distribution. He has two concentrically nested classifier wheels, whose Rotor blade rings have a large axial height. Through this Arrangement is achieved that the feed material over a long distance lingers in the visual zone and thus largely separated all fine and medium goods can be. Here too, however, the other fine fractions are exclusive obtained from the fine and medium fractions obtained from the first visual stage. There is no second inspection of the coarse goods.
  • a centrifugal force classifier is known from European patent EP 0 277 744 B1 known, which has a substantially cuboid housing in which several separately driven classifier rotors are arranged and each one separate fine air outlet are connected. Through the parallel or in A row of sifting rotors arranged side by side or one above the other should High-performance classifiers can be created with several at the same time Grain fractions can be generated.
  • the feed material can have several classifier rotors in succession are offered so that a repeated sighting of the coarse fraction is possible is.
  • the classifying rotors are at a relatively short distance from one another and always are arranged side by side, the classifying rotors influence each other.
  • Such a classifier is used to classify granular material at least three fractions and consists of one essentially vertically arranged Housing with discharges for fine, medium and coarse material, each classifying rotor a separate line for the air supply and a separate line for the Visible air discharge has.
  • conveyors such as e.g. Pipelines in fluidized state or also non-fluidized, procedurally connected.
  • Dispersion of visible material takes place in the visible air. This is also required to in the following view level optimal conditions for a complete classifier to create the good.
  • DE 39 24 826 A1 provides, in the transition area from the first Visual level to the second, underlying visual level a revolution and To loosen up the material to be sifted by Transition area is funnel-shaped. Are in further refinements in this funnel-shaped transition area, good centrifugal blades or Gutshrinder disks attached to a disagglomeration and / or To achieve comminution of the material.
  • the Highly wear-resistant baffle plates attached to the inner wall of the housing To protect this transition area from increased wear, the Highly wear-resistant baffle plates attached to the inner wall of the housing.
  • the desired deagglomeration unfortunately occurs due to the strong Impact of the good particles on the housing inner wall also build-up and Reagglomeration, especially by bombarding the inside wall of the housing with other good particles in connection with an insufficient or missing Removal of the good particles from the inner wall of the housing.
  • very sensitive too sifting goods for which not only the fine goods are desired Fraction to be obtained, e.g. for toner products, it is not desirable that Additional crushing of the material to be sighted occurs during the sighting.
  • the object of the invention is therefore to provide an air classifier for classifying to create granular material in three fractions, which is a very sharp separation of each individual fraction in one housing. There are more Tasks to achieve the sharp separation by the visible material is spared, in particular further comminution is avoided and that Visible material optimally dispersed between the two view levels and any existing ones Agglomerates are dissolved and the wear in the dispersion zone is reduced.
  • the starting point of the invention is a classifier with two on one side in a housing mounted, motor-driven paddle wheel classifying rotors, each one have tangential sight air supply, which is arranged at the level of each classifier rotor are and have a fixed guide vane ring, which in radial Distance from the circumference of the classifying rotor is arranged.
  • the safe embraces at least one visible material feed and discharge organs for fine, medium and Coarse.
  • the viewing zone is from the material to be viewed in the direction of the axial extension of the Flows through classifier rotors.
  • Sifting rotors which are at their axial first End each a closed cover plate and at their axial second end each have the fine or the Mittelgutaustragorgan.
  • the classifier rotors are arranged in the common housing so that the first two ends of the Classifying rotors are arranged opposite one another on the end face. Through this Arrangement is a radial flow gap between the two classifier rotors formed, due to the spatial arrangement of the classifying rotors, in the area comes between the two levels of vision.
  • This turbulence is supported by an inward flow gap directed air flow in the central radial area of the flow gap.
  • the Stratified air volume that is thrown near the wall and out of the Flow gap was removed, must be of an air volume of the same size be replaced. This is done by drawing in visual air from the area of the Visible zone in a central radial area of the flow gap. It will particularly fine particles preferably also flow into the flow gap transported.
  • the axial height should be at least 5 times the value of the largest sighted Particle diameter.
  • a variation of the possible penetration depth of the fine particles in radially inwards direction in the flow gap can be changed by changing the maximum radial depth of the flow gap.
  • the entire housing construction is particularly easy to change products designed to be accessible, which makes cleaning the classifier quick and easy enables. This minimizes downtimes and thus costs.
  • the two classifier rotors are therefore in the preferred embodiment each with independent bearings and / or drives.
  • One drive is the torque on both classifier rotors via a gear or transfer a clutch.
  • the housing is a housing that can be divided in the plane of the flow gap educated.
  • the two housing halves are either hinged or axial designed to be movable, whereby a combination is also sensible in which one First half of the housing by moving it axially from the other Half of the housing is separated and separated in another font Half of the housing can be folded down.
  • the classifying rotors and the interior of the housing are movable easily accessible for inspection and cleaning.
  • the visible material is fed in via a Visual feed from above. Since the visible material supply in the invention Air sifters cannot be carried out centrally from above, the visible goods supply is on arranged at a point of the peripheral region. To be even To get visible material distribution over the scope of the classifier rotors, that has to Visible material evenly distributed over the circumference before entering the visible zone his. This is the only way to ensure that local sight concentrations are negative influence, be avoided.
  • the visible material arrives at and through the upper annular disc of the internals Rotation spreads evenly over the entire circumference. Through the Rotation and the centrifugal forces generated thereby make the visible material particles radial transported outside and fall through a gap due to gravity between the rotating internals and the housing wall on one below the internals and the section still above the classifier rotor. Below the ring disc are blade elements distributed evenly over the circumference attached, which generate a rotational flow that the visible material in rotation added and dispersed.
  • This arrangement ensures a uniform distribution and dispersion of the Visible particles reached, but without special influence on the properties to have the sight. In this way, the visible material is neither crushed nor able to Agglomerations occur.
  • the residence time in the ring channel should be deliberately increased the ring washer can be used on its upper surface Blade elements are provided, which have an additional centrifugal effect cause the visible particles. It can also have an additional resolution of Agglomerates can be achieved.
  • the feed distributor can be used in the same way can also be used in air classifiers with only one classifier rotor.
  • the Feed nozzles also attached in an angular spatial arrangement are, preferably an arrangement that a directional component tangential to Has direction of rotation of the classifier rotor. They are of particular importance tangential arrangements at right angles to the axis of the classifier rotor run, because of a speed component of the material to be viewed against the Direction of rotation of the feed distributor a more intensive dispersion and with a gentle dispersion in the same direction of rotation he follows.
  • the wind sifter 1 shown in FIG. 1 a consists of a divisible housing which can be opened via the hinge 2 and has an upper housing half 3 and a lower housing half 4 which accommodate the two classifying rotors 5 and 9 .
  • the first classifier rotor 5 is rotatably received in the upper housing half 3 with a drive shaft 7 in the bearing 6 .
  • the classifier rotor 5 is driven by a drive motor 8 which is connected to the classifier rotor 5 via the drive shaft 7 .
  • the second classifying rotor 9 is rotatably received in the bearing 11 with its own drive shaft 10 in the same way.
  • the classifier rotor 9 is driven by a drive motor 12 which is connected to the classifier rotor 9 via the drive shaft 10 .
  • Each classifier rotor 5 and 9 represents a classifier rotor mounted on one side, the drive shafts 7 and 10 , the fine material discharge spaces 13 and 14 , and the classifier rotor bearings 6 and 11 are arranged on the same side.
  • the classifying rotors 5 and 9 have a closed cover plate 15 and 16 on the opposite side in each case
  • the first upper classifier rotor 5 there is a nozzle 17 , through which the material to be sifted is given up at one point on the peripheral region.
  • An outlet nozzle 18 for the coarse material is arranged below the lower classifier rotor 9 .
  • the supply of the classifying air takes place on the radial circumferences of the classifying rotors 5 and 9 via the two tangential classifying air supply lines 19 and 20 .
  • the classifier rotors 5 and 9 are arranged in opposite directions in the wind classifier 1 so that the two cover plates 15 and 16 are at a distance from one another and in parallel planes.
  • the arrangement of the cover disks 15 and 16 forms a gap, which is shown enlarged as a detail in FIG. 1b .
  • FIG. 1b shows visible material particles falling down along the outer circumference of the two classifying rotors 5 and 9 . Due to the rotation of the two classifying rotors 5 and 9 and their rotating cover disks 15 and 16 , the air in the flow gap is flung to the outside near the wall of the rotating cover disks 15 and 16 , where it entrains visible material particles and carries them into the gap in the central region of the flow gap and dispersed.
  • Fig. 2 shows an opening sequence of the divisible housing by opening.
  • Fig. 3 shows an opening sequence by moving and opening. In the fully opened state, the classifying rotors can be pulled off the drive shafts by simply loosening them and removed from the housing. Since the entire housing construction has largely no undercuts, quick and easy cleaning is guaranteed.
  • the upper classifier rotor 5 is not equipped with its own drive motor.
  • the classifier rotor 5 is connected to the driven classifier rotor 9 via a coupling 21 located on the cover plates 15 and 16 .
  • Fig. 5 the arrangement of the nozzle 17 for the task of the visible material and the outlet nozzle 18 for the discharge of the coarse material is shown as it is useful for the operation of the air classifier 1 in an axially horizontal orientation.
  • FIG. 6 shows the feed distributor 22 with the internals for distributing and dispersing the visible material.
  • annular disc 24 is connected to the classifying rotor 5 in a coaxial and rotating manner.
  • the feed distributor is assigned the paragraph 25 on the wall of the housing.
  • the blade elements 26, which are distributed uniformly over the circumference of the annular disk 24 are attached below the annular disk 24 . Additional blade elements 27 can optionally be attached above the rotating ring disk 24 .

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
EP99123117A 1998-11-27 1999-11-18 Séparateur pneumatique Expired - Lifetime EP1004366B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19854855 1998-11-27
DE19854855A DE19854855C2 (de) 1998-11-27 1998-11-27 Windsichter

Publications (3)

Publication Number Publication Date
EP1004366A2 true EP1004366A2 (fr) 2000-05-31
EP1004366A3 EP1004366A3 (fr) 2000-07-19
EP1004366B1 EP1004366B1 (fr) 2004-04-28

Family

ID=7889284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99123117A Expired - Lifetime EP1004366B1 (fr) 1998-11-27 1999-11-18 Séparateur pneumatique

Country Status (6)

Country Link
US (1) US6318561B1 (fr)
EP (1) EP1004366B1 (fr)
JP (1) JP4791618B2 (fr)
AT (1) ATE265279T1 (fr)
DE (2) DE19854855C2 (fr)
ES (1) ES2219982T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6318561B1 (en) 1998-11-27 2001-11-20 Hosokawa Alpine Aktiengesellschaft & Co. Ohg Air classifier
WO2018162173A1 (fr) * 2017-03-08 2018-09-13 Thyssenkrupp Industrial Solutions Ag Dispositif de séparation et procédé destiné à séparer un flux de matériaux
CN111318456A (zh) * 2018-12-13 2020-06-23 耐驰精细研磨技术有限公司 具有特殊分离器轮的离心分离器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005001542B4 (de) * 2005-01-13 2009-06-10 Lehigh Technologies, LLC, Naples Mehrrad-Windsichter, separate Sichterradeinheit und separate Sichterkammereinheit
JP5151940B2 (ja) * 2008-12-03 2013-02-27 株式会社リコー 分級装置
CN109789425B (zh) * 2016-08-09 2021-05-04 佐竹化学机械工业株式会社 分级装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250747A2 (fr) * 1986-06-25 1988-01-07 Christian Pfeiffer Maschinenfabrik GmbH & Co. Kommanditgesellschaft Procédé et dispositif de séparation pneumatique
DE3924826A1 (de) * 1989-07-27 1991-01-31 Kloeckner Humboldt Deutz Ag Sichter, insbesondere stabkorbsichter, zum sichten von koernigem gut in wenigstens drei fraktionen
EP0519535A1 (fr) * 1991-06-17 1992-12-23 ITALCEMENTI S.p.A. Séparateur dynamique pour matières pulvérulentes, en particulier du ciment, et installation comportant ledit séparateur

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US302608A (en) * 1884-07-29 watson
US2561388A (en) * 1945-08-20 1951-07-24 Microcyclomat Co Classifier units for friable material pulverizers
FR1409292A (fr) * 1964-05-22 1965-08-27 Reunis Broyeurs Forplex Atel Sélecteur dynamique pouvant être associé à un broyeur
US4296864A (en) * 1979-07-17 1981-10-27 Onoda Cement Co., Ltd. Air classifier
DE3545691C1 (de) * 1985-12-21 1987-01-29 Orenstein & Koppel Ag Vorrichtung zum Klassieren von staubfoermigen Schuettguetern
DE3615494A1 (de) 1986-05-07 1987-11-12 Omya Gmbh Zentrifugalkraftsichter
DE4112018A1 (de) * 1990-06-08 1991-12-12 Kloeckner Humboldt Deutz Ag Sichter
DE9015363U1 (de) * 1990-11-08 1991-01-17 Christian Pfeiffer Maschinenfabrik GmbH & Co KG, 4720 Beckum Vorrichtung zur Materialdispergierung
DE4040890C2 (de) * 1990-12-20 1995-03-23 Krupp Foerdertechnik Gmbh Windsichter
AT401741B (de) * 1993-08-19 1996-11-25 Thaler Horst Dipl Ing Windsichter
DE19520845C2 (de) * 1995-06-08 1997-06-26 Omya Gmbh Zentrifugalkraftsichter
EP0836893B1 (fr) * 1996-10-18 2002-12-11 HOSOKAWA ALPINE Aktiengesellschaft & Co. OHG Trieuse pneumatique à axe vertical
DE19854855C2 (de) 1998-11-27 2002-01-17 Hosokawa Alpine Ag & Co Windsichter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250747A2 (fr) * 1986-06-25 1988-01-07 Christian Pfeiffer Maschinenfabrik GmbH & Co. Kommanditgesellschaft Procédé et dispositif de séparation pneumatique
DE3924826A1 (de) * 1989-07-27 1991-01-31 Kloeckner Humboldt Deutz Ag Sichter, insbesondere stabkorbsichter, zum sichten von koernigem gut in wenigstens drei fraktionen
EP0519535A1 (fr) * 1991-06-17 1992-12-23 ITALCEMENTI S.p.A. Séparateur dynamique pour matières pulvérulentes, en particulier du ciment, et installation comportant ledit séparateur

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6318561B1 (en) 1998-11-27 2001-11-20 Hosokawa Alpine Aktiengesellschaft & Co. Ohg Air classifier
WO2018162173A1 (fr) * 2017-03-08 2018-09-13 Thyssenkrupp Industrial Solutions Ag Dispositif de séparation et procédé destiné à séparer un flux de matériaux
CN111318456A (zh) * 2018-12-13 2020-06-23 耐驰精细研磨技术有限公司 具有特殊分离器轮的离心分离器
EP3677348A3 (fr) * 2018-12-13 2020-10-21 NETZSCH-Feinmahltechnik GmbH Séparateur de force centrifuge doté d'une roue de séparateur spéciale
EP3925709A1 (fr) * 2018-12-13 2021-12-22 NETZSCH-Feinmahltechnik GmbH Séparateur de force centrifuge doté d'une roue de séparateur spéciale
US11278935B2 (en) 2018-12-13 2022-03-22 Netzsch-Feinmahltechnik Gmbh Centrifugal separator comprising special separator wheel
US11607709B2 (en) 2018-12-13 2023-03-21 Netzsch-Feinmahltechnik Gmbh Centrifugal separator comprising special separator wheel
EP3677348B1 (fr) 2018-12-13 2023-09-06 NETZSCH-Feinmahltechnik GmbH Séparateur de force centrifuge doté d'une roue de séparateur spéciale

Also Published As

Publication number Publication date
ES2219982T3 (es) 2004-12-01
DE19854855C2 (de) 2002-01-17
DE59909319D1 (de) 2004-06-03
ATE265279T1 (de) 2004-05-15
DE19854855A1 (de) 2000-06-08
EP1004366A3 (fr) 2000-07-19
JP4791618B2 (ja) 2011-10-12
US6318561B1 (en) 2001-11-20
EP1004366B1 (fr) 2004-04-28
JP2000157934A (ja) 2000-06-13

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