EP0492062A2 - Séparateur pneumatique - Google Patents

Séparateur pneumatique Download PDF

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Publication number
EP0492062A2
EP0492062A2 EP91115785A EP91115785A EP0492062A2 EP 0492062 A2 EP0492062 A2 EP 0492062A2 EP 91115785 A EP91115785 A EP 91115785A EP 91115785 A EP91115785 A EP 91115785A EP 0492062 A2 EP0492062 A2 EP 0492062A2
Authority
EP
European Patent Office
Prior art keywords
finished product
rotor blade
air classifier
air
product discharge
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
EP91115785A
Other languages
German (de)
English (en)
Other versions
EP0492062B1 (fr
EP0492062A3 (en
Inventor
Franz-Josef Dr. Grothaus
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
O&K Orenstein and Koppel GmbH
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, O&K Orenstein and Koppel GmbH filed Critical Krupp Polysius AG
Publication of EP0492062A2 publication Critical patent/EP0492062A2/fr
Publication of EP0492062A3 publication Critical patent/EP0492062A3/de
Application granted granted Critical
Publication of EP0492062B1 publication Critical patent/EP0492062B1/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
    • B07B11/06—Feeding or discharging arrangements

Definitions

  • the invention relates to a wind sifter for classifying dusty bulk materials, in particular lime, ground clinker, quartz powder, cement raw material or the like.
  • a housing With a housing, at least one material feed device, at least one finished product discharge device, a fixed blade ring provided inside the housing in its outer region as well as a rotor, including guide vanes with an essentially cylindrical cross-section, which is arranged so as to be rotatably drivable concentrically within the blade ring, visible air being able to be fed to the blade ring through at least one air inlet nozzle running tangentially on the housing.
  • a device for classifying dusty bulk goods, in particular ground clinker, limestone or cement raw material by air classification is known, the material to be classified is fed via a material inlet to the cover plate of a cylindrical rotor with vertical rotor blades and a ring cylindrical Visible space is given up, which extends between the rotor and a fixed blade ring surrounding it at a distance, through which visible air is sucked in approximately tangentially from an external fan. Fine material is transported radially inward as a result of the flow conditions within the classifier and discharged through a central discharge pipe, while coarse material is removed from the classifier by means of a drain pipe provided in the outer peripheral region.
  • a centrifugal air classifier with an essentially cylindrical visible space into which the visible air and the visible material are introduced with a twist on the outer circumference, the coarse material being drawn off on the outer circumference of the visible space, and the visible air together are discharged with the fine material through a central, stationary suction pipe covering the axial extent of the visible space, the suction pipe having inlet openings distributed around its circumference.
  • US Pat. No. 1,746,686 shows an air classifier which has a housing in which two classifying devices arranged axially one above the other are arranged, by means of which a total of three fractions can be generated which are discharged in the region of the housing base.
  • DE-OS 35 21 638 shows a scattering classifier, in particular for classifying cement, which contains a good task, a spreading plate with drive which distributes the good stream to a good veil, a classifying wheel, a classifying air supply opening and a coarse material and fine material discharge .
  • the material flow feed and the fine material discharge are arranged in the classifier axis and for the coarse material discharge a conveyor channel is provided in a ring around the fine material discharge, the good veil through which the visible air flows is designed as a bell-shaped outer surface.
  • the aim of the invention is to develop a wind sifter, as described, for example, in DE-PS 35 45 691, in such a way that the feed material can be divided into at least three material streams of different grain size distribution with optimized visibility efficiency, without significantly changing the vision concept , whereby it can be very useful to merge two or more material flows after the visual process.
  • the rotor contains at least two concentrically arranged rotor blade rings including guide vanes, that below the rotor blade rings or the Guide vanes are provided several independent finished goods discharge devices, and that the semolina outside of the finished goods discharge devices are brought together and can be removed by a semolina discharge device.
  • the finished product discharge device is divided into a first and a second finished product discharge when using two rotor blade rings, which are separated from each other by labyrinths on the one hand and on the other hand from the Graesse discharge, the first finished product discharge optionally being operated with or without air flow.
  • the finished product can either be discharged downwards, only upwards or - depending on the application - both upwards (air flow) and downwards.
  • the respective selection is made dependent on the bulk material to be classified.
  • these can be rectilinear or slightly curved, and they can be of different lengths radially.
  • round bars can also be used as guide elements.
  • it may it also makes sense to make the guide vanes at least partially radially so long that they connect at least two rotor blade rings to one another. However, this requirement only makes sense for rotor blade rings which are firmly connected to one another.
  • the finished goods discharge devices are each operated with an air flow, a so-called “dead flow” will occur in the separation curve in accordance with the ratio of the air throughputs at the second finished goods discharge to that at the first finished goods discharge.
  • the normally disadvantageous "dead river” can be advantageous if e.g. PZ 45 and PZ 35 are to be produced at the same time.
  • the "dead river” causes a high proportion of very fine material to remain in the PZ 35, which can contribute to a tolerable water requirement for the PZ 35.
  • FIGS 1 and 2 show the wind sifter 1 according to the invention on the one hand in longitudinal section and on the other hand in cross section.
  • the following components are shown: a housing 2, an upper material feed device 3 in the form of a tube, two air inlet ports 4, 5 running tangentially to the housing 2, a first finished product discharge device 6, a second finished product discharge device 7 and a grit discharge device 8.
  • a housing 2 Inside the housing 2 are in this example, two axially superimposed radially outer blade rings 9, 10 are provided inside the housing 2 are in this example.
  • a rotor shaft 11 is arranged concentrically within these blade rings 9, 10 and is guided in bearings 12, 13 in the region of its two ends. The drive for the rotor shaft 11 is only indicated here by the direction of the arrow.
  • Rigidly connected to the rotor shaft 11 are two rotor blade rings 14, 15 and 16, 17 arranged axially one above the other, together with guide blades 14 ', 15' and 16 ', 17', which are provided analogously to the blade rings 9, 10 provided axially one above the other.
  • the rotor blade rings 14, 15 and 16, 17 are firmly connected to the rotor shaft 11 via radial webs 18, 19, 20.
  • labyrinths 21, 22 are provided in the lower region of the rotor blade rings 16, 17.
  • the functioning of the air classifier 1 according to the invention is approximately as follows:
  • the material to be classified first reaches the cover plate 23 of the rotating rotor blade rings 14, 15 and 16, 17 and is thrown outwards in the radial direction, so that it enters the ring-cylindrical viewing spaces 24, 25 from above, which on the one hand between the rotor blade rings 14, 15 and 16, 17 and on the other hand between the rotor blade ring 15 and 17 and the blade ring 9 and 10 are formed.
  • the fine material portion which is formed in the area of the visible space 24 between the rotor blade rings 14, 15 or 16, 17, reaches the ring-cylindrical upper part 28 of the finished product discharge device 6, while the other fine material portion is collected in the interior 26 of the housing 2 and over a cylinder 29 of the finished product discharge device 6 is supplied.
  • the finished product discharge devices 6, 7 adjoin the cylindrical sections 28, 29 and taper in a funnel shape, being arranged concentrically to one another.
  • the finished goods discharge device 6 runs into the drain pipe 30 and the finished goods discharge device 7 runs into the drain pipe 31, the materials being fed from here to their further determinations.
  • FIG. 3 shows an alternative wind sifter 32, which likewise contains two rotor blade rings 33, 34, which are arranged concentrically with the radially outer blade rings 9.
  • the rotor blade rings 33, 34 together with guide blades 33 ', 34' are not connected to one another but can be driven in rotation separately.
  • the rotor blade ring 33 is connected on the one hand to a hollow shaft 35 and in stored its lower region 37.
  • the rotor blade ring 34 is fixedly connected to a drive shaft 36 (not shown) which is guided inside and above the hollow shaft 35 and is mounted at the top and bottom.
  • Both rotor blade rings 33, 34 can thus be driven at different speeds by means of drives (not shown further) in order in this way to achieve an optimal visual effect which is matched to different materials.
  • the finished product discharge devices 6, 7 are designed analogously to FIG. 1 and run out into the drain pipes 30 and 31, respectively.
  • FIGS. 4 and 5 show a wind sifter 38 which corresponds in its basic structure to the wind sifter shown in FIG. 1.
  • the main differences from the air classifier according to FIG. 1 are due to the fact that the rotor blade rings 39, 40 are designed to be relatively thin radially, the guide blades 41 being designed radially so long that they connect the two rotor blade rings 39, 40 to one another.
  • the finished product discharge devices 6, 7, which open into the drain pipes 30, 31, are provided analogously to those in FIG. 1, so that despite the arrangement of the rotor blade rings 39, 40 there is the possibility, based on the guide blades 41, of two fine fractions to produce different grain sizes.
  • FIG. 6 shows a further alternative construction of an air classifier 42.
  • the structure of the air classifier 42 corresponds to that shown in FIG. 1. Differences can be seen in the fact that the finished product discharge devices 43, 44 are arranged in such a way that part of the radially inward flowing air-material mixture between the rotor blade rings 45, 46 into the finished product discharge device 43 and thus into the drain pipe arranged below 47 arrives and the further part of the air-material mixture is conveyed upwards into the finished product discharge device 44 due to a negative pressure generated in the inner area 48 of the air classifier 42 and is drawn off there via a pipeline 49.
  • the grains are - as shown in Figure 1 - discharged through a drain pipe 8.
  • the wind sifter 50 shown in FIGS. 7 and 8 corresponds approximately to the wind sifter described in FIG.
  • the rotor blade rings 39, 40 are designed to be relatively narrow radially, with guide vanes, as can be seen in particular in FIG 41 are provided, which connect the two rotor blade rings 39, 40 to one another and, on the other hand, guide vanes 41 'are provided, which are radially shorter and are only connected to the rotor blade ring 40.
  • guide vanes 41 ′ there is also the possibility of connecting the guide blades 41 ′ to the inner rotor blade ring 39 or of providing an alternating construction.
  • FIGS. 9 and 10 show a further air classifier 51, which in turn corresponds to the structure of the wind classifier shown in FIG.
  • the differences from FIG. 4 are due to the fact that, in addition to the guide vanes 41 between the rotor blade rings 39, 40, round bars 52 are provided in the area of the rotor blade ring 40 and, on the other hand, round bars 53 in the area of the rotor blade ring 39, the round bars 52, 53 as additional guide devices for serve the material flowing radially from the outside to the inside.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Liquid Crystal (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Compressor (AREA)
EP91115785A 1990-12-20 1991-09-18 Séparateur pneumatique Expired - Lifetime EP0492062B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4040890A DE4040890C2 (de) 1990-12-20 1990-12-20 Windsichter
DE4040890 1990-12-20

Publications (3)

Publication Number Publication Date
EP0492062A2 true EP0492062A2 (fr) 1992-07-01
EP0492062A3 EP0492062A3 (en) 1992-10-14
EP0492062B1 EP0492062B1 (fr) 1995-03-29

Family

ID=6420850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115785A Expired - Lifetime EP0492062B1 (fr) 1990-12-20 1991-09-18 Séparateur pneumatique

Country Status (4)

Country Link
EP (1) EP0492062B1 (fr)
AT (1) ATE120388T1 (fr)
DE (2) DE4040890C2 (fr)
DK (1) DK0492062T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645196A4 (fr) * 1993-03-31 1995-10-25 Onoda Cement Co Ltd Separateur a air a tourbillon.
CN1056787C (zh) * 1993-08-07 2000-09-27 霍索卡瓦阿尔彼股份公司及两合公司 把微粒固体分为两种颗粒部分的方法和装置
EP2125229A1 (fr) * 2007-01-10 2009-12-02 Koppern Equiptment, Inc. Séparateur à air pour matériaux broyés
WO2012168625A2 (fr) 2011-06-08 2012-12-13 Pa Technologies Séparateur dynamique pour matériaux pulvérulents
CN112893122A (zh) * 2021-01-16 2021-06-04 江苏羚羊机械有限公司 一种新型双导均风高效选粉机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401741B (de) * 1993-08-19 1996-11-25 Thaler Horst Dipl Ing Windsichter
DE4416034A1 (de) * 1994-05-06 1995-07-06 Krupp Foerdertechnik Gmbh Verfahren zur Sichtung von feinkörnigen Stoffen und Einrichtung für die Durchführung des Verfahrens
DE19854855C2 (de) * 1998-11-27 2002-01-17 Hosokawa Alpine Ag & Co Windsichter
DE102015220269A1 (de) * 2015-10-19 2017-04-20 Thyssenkrupp Ag Sichteinrichtung zum Sichten eines Materialstroms

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1937603A1 (de) * 1969-07-24 1971-02-11 Pfeiffer Barbarossawerke Fliehkraft-Windsichter
EP0171987A2 (fr) * 1984-08-13 1986-02-19 F.L. Smidth & Co. A/S Séparateur pour le tri d'une matière particulaire
DE3521638A1 (de) * 1985-06-15 1986-12-18 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und turbo-sichter zum streuwindsichten, insbesondere von zement
DE3545691C1 (de) * 1985-12-21 1987-01-29 Orenstein & Koppel Ag Vorrichtung zum Klassieren von staubfoermigen Schuettguetern
EP0460490A2 (fr) * 1990-06-08 1991-12-11 Klöckner-Humboldt-Deutz Aktiengesellschaft Séparateur pneumatique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE511849C (de) * 1930-11-03 Kohlenscheidungs Ges M B H Um eine senkrechte Achse umlaufender Siebsichter
US1746686A (en) * 1928-06-23 1930-02-11 Sturtevant Mill Co Air separator
DE2556382C3 (de) * 1975-12-15 1985-06-27 Alpine Ag, 8900 Augsburg Zentrifugalwindsichter
US4818376A (en) * 1986-04-28 1989-04-04 Onoda Cement Company, Ltd. Leakage prevention apparatus for a classifier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1937603A1 (de) * 1969-07-24 1971-02-11 Pfeiffer Barbarossawerke Fliehkraft-Windsichter
EP0171987A2 (fr) * 1984-08-13 1986-02-19 F.L. Smidth & Co. A/S Séparateur pour le tri d'une matière particulaire
DE3521638A1 (de) * 1985-06-15 1986-12-18 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und turbo-sichter zum streuwindsichten, insbesondere von zement
DE3545691C1 (de) * 1985-12-21 1987-01-29 Orenstein & Koppel Ag Vorrichtung zum Klassieren von staubfoermigen Schuettguetern
EP0460490A2 (fr) * 1990-06-08 1991-12-11 Klöckner-Humboldt-Deutz Aktiengesellschaft Séparateur pneumatique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645196A4 (fr) * 1993-03-31 1995-10-25 Onoda Cement Co Ltd Separateur a air a tourbillon.
CN1056787C (zh) * 1993-08-07 2000-09-27 霍索卡瓦阿尔彼股份公司及两合公司 把微粒固体分为两种颗粒部分的方法和装置
EP2125229A1 (fr) * 2007-01-10 2009-12-02 Koppern Equiptment, Inc. Séparateur à air pour matériaux broyés
EP2125229A4 (fr) * 2007-01-10 2013-03-27 Koppern Equiptment Inc Séparateur à air pour matériaux broyés
WO2012168625A2 (fr) 2011-06-08 2012-12-13 Pa Technologies Séparateur dynamique pour matériaux pulvérulents
FR2976194A1 (fr) * 2011-06-08 2012-12-14 Pa Technologies Separateur dynamique pour materiaux pulverulents
WO2012168625A3 (fr) * 2011-06-08 2013-02-07 Pa Technologies Séparateur dynamique pour matériaux pulvérulents
CN112893122A (zh) * 2021-01-16 2021-06-04 江苏羚羊机械有限公司 一种新型双导均风高效选粉机

Also Published As

Publication number Publication date
ATE120388T1 (de) 1995-04-15
DE4040890C1 (en) 1992-05-27
EP0492062B1 (fr) 1995-03-29
DE59105053D1 (de) 1995-05-04
EP0492062A3 (en) 1992-10-14
DK0492062T3 (da) 1995-08-28
DE4040890C2 (de) 1995-03-23

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