EP0377826B1 - Séparateur pneumatique - Google Patents

Séparateur pneumatique Download PDF

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Publication number
EP0377826B1
EP0377826B1 EP89122490A EP89122490A EP0377826B1 EP 0377826 B1 EP0377826 B1 EP 0377826B1 EP 89122490 A EP89122490 A EP 89122490A EP 89122490 A EP89122490 A EP 89122490A EP 0377826 B1 EP0377826 B1 EP 0377826B1
Authority
EP
European Patent Office
Prior art keywords
rotor
distribution plate
material distribution
separator
guide unit
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.)
Expired - Lifetime
Application number
EP89122490A
Other languages
German (de)
English (en)
Other versions
EP0377826A2 (fr
EP0377826A3 (fr
Inventor
Ludger Lohnherr
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 EP0377826A2 publication Critical patent/EP0377826A2/fr
Publication of EP0377826A3 publication Critical patent/EP0377826A3/fr
Application granted granted Critical
Publication of EP0377826B1 publication Critical patent/EP0377826B1/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 has for its object to develop a classifier of the type mentioned that a particularly reliable pneumatic transport of the thrown off from the crop distribution plate and entered in the classifying air flow is guaranteed in the somewhat higher viewing zone in the area of the rotor and guide vane system.
  • the classifier illustrated schematically in the drawing contains in a housing 1 a rotor 2 driven by a motor with a vertical axis, whose shaft 3 is mounted in an upper bearing 4 and a lower bearing 5.
  • the rotor 2 has blades 6 arranged at a distance from one another on its circumference.
  • the rotor 2 is surrounded at a distance by a fixed guide device 7, the guide vanes 8 of which can be adjusted by means of adjustment devices 9 which are guided through the ceiling of the housing 1.
  • a channel 12 is connected to the ceiling of the classifier housing 1 and is used to remove the fine air laden with fine air upwards.
  • a crop distribution plate 13 Arranged underneath the rotor 2 and the guide apparatus 7 is a crop distribution plate 13 which is connected to the rotor 2 in a rotationally fixed manner via webs 14 which are arranged at a distance from one another in the circumferential direction and are designed as hollow profiles.
  • the webs 14 are fastened to a cone 15 which serves to stiffen the rotor 2.
  • annular scattering plate 16 Arranged underneath the crop distribution plate 13 is an annular scattering plate 16 which can also be rotated with the rotor 2 and which is likewise carried by the webs 14.
  • An annular, stationary cover 18 is also provided above the crop distribution plate 13, through which the crop inlet chute 17 is guided.
  • the cover 18 is designed as a cone 18a which tapers downwards in a funnel shape and is located below the viewing space 19 located between the guide device 7 and the rotor 2.
  • the crop distribution plate 13 is - as can be seen in particular in FIG. 2 - provided in its circumferential area with a number of openings 20 arranged in a uniform circumferential division. On the outside, these openings 20 are delimited by guide elements 21 which are inclined in the direction of rotation (arrow 22) of the crop distribution plate 13 with respect to the radial direction.
  • guide elements 23 are arranged, which are inclined opposite to the direction of rotation of the crop distribution plate 13 with respect to the radial direction.
  • the design of the crop distribution plate 13 corresponds to the embodiment described in EP-A-0 221 246.
  • the function of the sifter is as follows: A stream of visual air flows through the housing 1 to the diffuser 7 (arrows 24, 25). The material to be sifted, which is fed to the crop distribution plate 13 via the crop inlet chute 17, is homogenized on the crop distribution plate 13 and thrown through the openings 20 onto the spreading plate 16. Through the spreading plate 16, the material is radially outwardly into the ascending visual air flow entered and comes with the visual air flow into the visual space 19 between the nozzle 7 and rotor 2 (arrow 26). In the zone in which the material thrown off by the material distribution plate 13 reaches the sight air flow, a nozzle 35 is provided which is penetrated by the sight air flow with high gas velocity and low pressure loss. In this way, the material thrown off by the material distribution plate 13 is reliably fed to the guide device 7 and the rotor 2.
  • the coarse material dropping downward in the viewing space 19 is passed over the cone 18a of the cover 18 and through the spaces between the webs 14 and the coarse material funnel 10 (arrow 27).
  • the fine material enters the rotor 2 with the classifying air flow and leaves the classifier through the channel 12 (arrows 28, 29).
  • the cover 18 shields the good feed from the environment and in particular prevents the coarse material deposited in the viewing space 9 from falling again onto the good distribution plate 13.
  • the inner wall of the classifier housing 1 is armored in the area 30 in which the material scattered outwards by the spreading plate 16 impinges on this inner wall. Coarse particles that collide with this armored region 30 of the classifier housing 1 are braked and fall back downward, so that they fall back into the mill chamber (if the classifier is arranged above a roller mill).
  • the fine particles enter the viewing space 19 with the classifying air flow.
  • the invention is further illustrated by the following example.
  • the example shows that the capacity of the roller mill system increases from 150 t / h in conventional operation to 185 t / h if a classifier of the type described is installed and operated in such a way that as much material as possible is fed to the spreading disc.
  • the product fineness of the finished goods with a residue of 1.6 - 2% on the 200 ⁇ m sieve and of 22 - 23% on the 90 ⁇ m sieve was constant in all test settings.
  • the example also shows that the power consumption of the roller mill system, measured in kWh / t product, drops from 100 to 82% if the classifier is operated in accordance with the mode of operation described here.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Paper (AREA)

Claims (6)

  1. Séparateur
    a) comprenant un rotor commandé (2) à axe vertical, qui comporte des pales (6) placées à distance les unes des autres à la circonférence,
    b) un plateau annulaire de distribution de matière (13) qui est rotatif avec le rotor (2),
    c) un dispositif de déversement de la matière à séparer sur le plateau de distribution (13),
    d) un appareil directeur fixe (7) entourant le rotor (2) à distance et équipé de pales directrices réglables (8) d'orientation d'un courant d'air de séparation qui balaye l'appareil directeur et le rotor de l'extérieur vers l'intérieur,
    e) un canal (12) se raccordant au côté supérieur du rotor (2) pour évacuaer vers le haut le courant d'air de séparation chargé de matière à granulométrie fine,
    f) ainsi qu'une trémie (10) d'évacuation de la matière à gros grains vers le bas, qui est disposée sous le rotor (2) et l'appareil directeur (7),
    g) le plateau de distribution (13) de matière étant disposé sous le rotor (2) et l'appareil directeur (7) de manière que la matière projetée par le plateau de distribution parvienne dans le courant d'air de séparation arrivant dans l'appareil directeur,
       caractérisé par les particularités suivantes :
    h) un plateau annulaire (16) de dispersion, qui est également rotatif avec le rotor (2), est disposé sous le plateau (13) de distribution de matière,
    i) une tuyère (35), dans laquelle le courant d'air de séparation passe à vitesse élevée et avec faible perte de pression, est prévue dans la zone dans laquelle la matière uniformisée par le plateau de distribution (13) et projetée sur le plateau de dispersion (16) parvient dans le courant d'air de séparation.
  2. Séparateur à vent selon la revendication 1, caractérisé en ce que le plateau (13) de distribution de matière est solidarisé en rotation avec le rotor (2) par des entretoises (14) disposées à distance les unes des autres dans la direction de la circonférence et de préférence constituées de profilés creux.
  3. Séparateur à vent selon la revendication 1, caractérisé par les particularités suivantes :
    a) le plateau (13) de distribution de matière comporte dans la région de la circonférence de multiples ouvertures (20) disposées suivant des pas réguliers à la circonférence ;
    b) les ouvertures (20) sont délimitées du côté extérieur par des éléments de guidage (21) qui sont inclinés sur la direction radiale dans le sens de rotation du plateau de distribution de matière ;
    c) des éléments directeurs (23) disposés entre l'extrémité radiale extérieure des éléments individuels de guidage (21) et l'extrémité radiale intérieure des éléments voisins de guidage sont inclinés sur la direction radiale dans le sens inverse à celui de la rotation du plateau de distribution de matière.
  4. Séparateur à vent selon la revendication 1, caractérisé en ce que le dispositif de déversement de la matière à séparer sur le plateau (13) de distribution de matière est formé d'au moins une goulotte de déversement (17) qui passe à travers l'enveloppe (1) du séparateur entourant l'appareil directeur (7) et qui débouche au-dessus du plateau de distribution de matière.
  5. Séparateur à vent selon la revendication 4, caractérisé en ce qu'un élément annulaire fixe de couverture (18), à travers lequel la goulotte de déversement de matière (17) passe, est prévu au-dessus du plateau (13) de distribution de matière.
  6. Séparateur à vent selon la revendication 5, caractérisé en ce que l'élément de couverture (18) est conformé du côté intérieur en cône se rétrécissant vers le bas en forme de trémie et disposé sous l'espace de séparation (19) se trouvant entre l'appareil directeur (7) et le rotor (2) de manière qu'il dirige la matière à gros grains tombant de l'espace de séparation dans la trémie (10) de matière en gros grains.
EP89122490A 1989-01-12 1989-12-06 Séparateur pneumatique Expired - Lifetime EP0377826B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900779 1989-01-12
DE3900779A DE3900779A1 (de) 1989-01-12 1989-01-12 Sichter

Publications (3)

Publication Number Publication Date
EP0377826A2 EP0377826A2 (fr) 1990-07-18
EP0377826A3 EP0377826A3 (fr) 1991-07-03
EP0377826B1 true EP0377826B1 (fr) 1994-03-16

Family

ID=6371971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122490A Expired - Lifetime EP0377826B1 (fr) 1989-01-12 1989-12-06 Séparateur pneumatique

Country Status (6)

Country Link
US (1) US5055182A (fr)
EP (1) EP0377826B1 (fr)
BR (1) BR9000014A (fr)
DE (2) DE3900779A1 (fr)
ES (1) ES2050771T3 (fr)
ZA (1) ZA899459B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025458C2 (de) * 1990-08-10 1995-11-09 Leschonski Kurt Dr Ing Verfahren und Vorrichtung zum Spiralwindsichten in Sichtern mit beschaufelten Rotoren
DE102006044833B4 (de) * 2006-09-20 2010-01-21 Babcock Borsig Service Gmbh Zentrifugalsichter und Verfahren zum Sichten
US8820535B2 (en) * 2012-02-07 2014-09-02 Rickey E. Wark Classifier with variable entry ports
US8813967B2 (en) 2012-05-02 2014-08-26 Alstom Technology Ltd Adjustable mill classifier
WO2014117031A1 (fr) 2013-01-24 2014-07-31 Lp Amina Llc Dispositif de classification
DE102016203420A1 (de) * 2016-03-02 2017-09-07 Thyssenkrupp Ag Sichter zum Sichten eines Materialstroms
DE102021001238B4 (de) * 2021-03-09 2023-01-26 Hosokawa Alpine Aktiengesellschaft Zentrifugalkraft-Windsichter und Verfahren zur Sichtung von staubförmigen Gütern
DE102021001237B4 (de) * 2021-03-09 2023-02-09 Hosokawa Alpine Aktiengesellschaft Vorrichtung und Verfahren zur Sichtung von staubförmigen Gütern
DE102021001240B4 (de) * 2021-03-09 2023-05-11 Hosokawa Alpine Aktiengesellschaft Vorrichtung und Verfahren zur Sichtung von staubförmigen Gütern
DE102021001239B4 (de) * 2021-03-09 2024-03-21 Hosokawa Alpine Aktiengesellschaft Vorrichtung und Verfahren zur Sichtung von staubförmigen Gütern

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2212819A (en) * 1937-07-01 1940-08-27 Smidth & Co As F L Apparatus for separating powdered materials
DE1482454B1 (de) * 1964-01-02 1971-07-29 Pfeiffer Barbarossawerke Umluftsichter
DE2235789C3 (de) * 1972-07-21 1974-12-12 Polysius Ag, 4723 Neubeckum Vertikalachsiger Umluft-Windsichter
JPS51147059A (en) * 1975-06-13 1976-12-17 Nobuo Yoshimori Apparatus for classification
DE2547709A1 (de) * 1975-10-24 1977-05-05 Polysius Ag Vertikalachsiger umluft-windsichter
DE3038625A1 (de) * 1980-10-13 1982-05-19 Fa. Christian Pfeiffer, 4720 Beckum Drehluft-fliehkraft-streusichter
JPS59102463A (ja) * 1982-11-04 1984-06-13 ハインツ・イエ−ゲル セメントを分離する方法および分離装置
DE3533484A1 (de) * 1984-03-21 1987-03-26 Krupp Polysius Ag Umluftsichter
DE3426294A1 (de) * 1984-07-17 1986-01-23 Klöckner-Humboldt-Deutz AG, 5000 Köln Zyklonumluftsichter zur sichtung von gut unterschiedlicher korngroesse, insbesondere von zement
DE3521638C2 (de) * 1985-06-15 1994-03-31 Kloeckner Humboldt Deutz Ag Streuwindsichter zum Sichten von feinkörnigem Gut
DE3539512A1 (de) * 1985-11-07 1987-05-14 Krupp Polysius Ag Sichter
DE8606061U1 (de) * 1986-03-05 1986-04-17 Krupp Polysius Ag, 4720 Beckum Vorrichtung zum feinverteilten Einstreuen von Gut in den Sichtraum eines Windsichters

Also Published As

Publication number Publication date
US5055182A (en) 1991-10-08
DE3900779A1 (de) 1990-07-19
DE58907239D1 (de) 1994-04-21
EP0377826A2 (fr) 1990-07-18
BR9000014A (pt) 1990-10-09
ES2050771T3 (es) 1994-06-01
ZA899459B (en) 1990-09-26
EP0377826A3 (fr) 1991-07-03

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