EP0534483B1 - Séparateur centrifuge à turbine - Google Patents

Séparateur centrifuge à turbine Download PDF

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Publication number
EP0534483B1
EP0534483B1 EP92116543A EP92116543A EP0534483B1 EP 0534483 B1 EP0534483 B1 EP 0534483B1 EP 92116543 A EP92116543 A EP 92116543A EP 92116543 A EP92116543 A EP 92116543A EP 0534483 B1 EP0534483 B1 EP 0534483B1
Authority
EP
European Patent Office
Prior art keywords
classifier
turbo
wheel
fine material
centrifugal
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
EP92116543A
Other languages
German (de)
English (en)
Other versions
EP0534483A3 (en
EP0534483A2 (fr
Inventor
Karl Kaufmann
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.)
ENGMA ENGINEERS BEHEER
Original Assignee
ENGMA ENGINEERS BEHEER
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 ENGMA ENGINEERS BEHEER filed Critical ENGMA ENGINEERS BEHEER
Publication of EP0534483A2 publication Critical patent/EP0534483A2/fr
Publication of EP0534483A3 publication Critical patent/EP0534483A3/xx
Application granted granted Critical
Publication of EP0534483B1 publication Critical patent/EP0534483B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • 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 a turbo centrifugal classifier accordingly the preamble of claim 1.
  • an air classifier which has an inlet for viewing material, a Visual air inlet, at least one fine material-visual air mixture outlet and at least has a coarse material outlet. It is supported by one at both ends Provide the classifier wheel with a horizontal classifier wheel axis, with an additional one Vane ring delimiting visual space is arranged, the blades of which are in tangential flow direction to the classifier wheel circumference are adjustable and the determines the direction of flow of the classifying air.
  • This blade ring is in one Circular sector for the removal of the coarse material and has an in coarse material cutting arranged in this circular sector. The removal of the fine material / visual air mixture takes place axially over the end faces of the classifier wheel. That too classifying material is placed outside the blade ring in the classifier housing brought in.
  • the invention has for its object the turbo centrifugal classifier in terms of operating frequencies and in terms of improve the diameter-length ratio and at the same time the quality of the separation process to increase.
  • the fine material / visual air mixture is adjusted accordingly large sections of the classifier wheel with the for View necessary radial speed from the outside sucked inside and on correspondingly short lengths the classifier wheel with a much higher z. B. 3-6 times radial speed sucked inside out.
  • the arrangement of the sections has changed Suction and extraction on the classifier wheel jacket for the fine material / mixed air mixture according to the present invention the advantage that the pressure drop generated by the classifier wheel, which overcome by an external blower would have to be quashed, except for slight pressure drops becomes. Because this pressure drop for sifting at high Fineness is not insignificantly high and accordingly large, e.g. T. two-tier arranged one behind the other Blower and consequently correspondingly pressure-resistant air routing and filter devices would be necessary these in the present invention z. T. omitted, or essential be simplified.
  • Figure 1 shows a known grinding-visual cycle with a Turboflash force classifier with a classifier wheel 1 e.g. B. for grinding cement, des is acted upon by a ball mill 2 '.
  • the feed 9 ' can be regulated from a silo 4' via a cell lock 3 ' the ball mill 2 'supplied after grinding in the ball mill 2 'becomes the ball mill material 13' via a bucket elevator 11 'and a screw 6' with the exclusion of air by means of a Cell lock 3 'placed on the turbo centrifugal classifier.
  • the length of the turbo centrifugal classifier is carried out by a feed channel 10 '.
  • the classifying wheel 1 driven by a motor 7 ′ of the turbo centrifugal separator separates the spherical waste 13 'in coarse material 12' and fine material 17 'by means of the externally supplied Sight air 14 ', which is also the dedusting the ball mill 2 'can take over.
  • the coarse material 12 ' falls down into a screw conveyor 6 'and passes under the exclusion of air by means of a cell lock 3 'back to the task the ball mill 2.
  • the fine material 17 ' is together with the Sight air 14 'through the classifier wheel 1 of the turbo centrifugal classifier 1 suctioned off and fed cyclone separators 5 '.
  • a large Portion of fine material 17 ' is separated off there and by means of cell locks 3 'carried out.
  • FIGS 2 to 4 show different embodiments of the classifier wheel.
  • Figure 2 shows a double-sided classifying wheel 1 with a Diameter-length ratio D / L of approx. 1: 1.
  • the bigger one used for sighting, flowed from the outside inwards Length section 2 is by a seal 3 on the circumference the classifier wheel 1 from the smaller one, for extracting the fine air / air mixture 4 used, flowed through from the inside to the outside Length section 5 separately.
  • a visual space 6 is located yourself over the larger length section 2 and a Ventilation room 7, which is used to extract the fine air / air mixture 4 serves, is located above the shorter length section 5, which is also used as a fan with ventilation blades 8 of the same or larger diameter than it could be in the field of vision.
  • Figure 3 shows a double-sided classifying wheel 9 with a Diameter-length ratio D / L of approx. 1: 2. At this Arrangement there are two larger length sections 2 for sifting, which the fine air mixture 4 in a common to Suction provided length section 5 in the ventilation room Submit 7. Through two seals 3 on the circumference of the Classifier wheel 9 are classroom 6 and valve room 7 from each other Cut. Camp 10 is on both End faces of the classifier wheel 9. The classifier wheel 9 is driven by a motor 11 driven.
  • FIG. 4 shows a classifying wheel 12 mounted on two sides a diameter / length ratio D / L of approx. 1: 4.
  • This Classifier wheel is provided with two common, for suction Long sections 5 provided, each of larger, for Sighting sections 2 and 13 with fine air mixture 4 are fed, the middle length section 13 is approximately twice as large as a length segment 2.
  • the drive of the two-sided in bearings 10 Classifier wheel 12 in this case takes place by two motors 11, which are connected to the classifying wheel 12 with couplings, like the classifying wheels 1 and 9 with the motors 11.
  • sifter wheels can be used as in one Modular principle to be built and to one, the strength of the classifier wheel corresponding to any length a diameter / length ratio D / L of up to 1: 6 or Can be extended 1: 8.
  • FIG. 5 shows a longitudinal section A-B in FIGS. 6 and 7, Cross sections C-D and E-F in Fig. 5 of a turbo centrifugal classifier. It is a sifter with a diameter / length ratio D / L of approx. 1: 2.
  • the Classifier wheel 1 is one-sided via a shaft driven. Storage takes place on both sides in the Bearings 10, which are built on a lower housing part.
  • the classifier wheel 1 has two classrooms 6 for the intake and a ventilation room 7 for the extraction of the fine material-visual air mixture.
  • the classifier wheel blades have 6 and 6 in all rooms 7 same diameter. Located between rooms 6 and 7 themselves two seals 3, which prevent unsighted Feed material in the fine material classifying air space can reach.
  • the upper housing part which is the focus the classifier wheel 1 is separated from the lower housing part, has a visible material inlet 14.
  • Two double-sided air conveying troughs 15 distribute the feed in several on the Length of classifier wheel 1 attached tangentially in the direction of rotation Feed hopper 16, which ensure that the feed material evenly along the length of the classifier wheel 1 in the range of Visible space 6 is distributed.
  • the intake of the visual air 17 takes place via a suction opening 18 in the lower housing part and is arranged on the circumference of the classifying wheel 1
  • Air guide vanes 19 passed through such that the Visible air 17 tangentially on the classifier wheel 1 and that in inner circle of air guide vanes 19 fed feed tears with it and in a circular motion offset in the direction of rotation of the classifier wheel 1.
  • Both the suction opening 18 for the Intake of the visual air 17, as well as the suction nozzle 22 for the extraction of the fine material-air mixture be rotated by 90 ° around the classifier wheel axis by one favorable arrangement to be found in an overall system.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Centrifugal Separators (AREA)

Claims (13)

  1. Séparateur centrifuge à turbine comportant un carter fixe, muni d'une ou de plusieurs entrées (14) pour la matière à séparer, d'une ou de plusieurs entrées (18) pour l'air de séparation, d'une ou de plusieurs sorties (22) pour le mélange de matière fine et d'air de séparation et d'une ou de plusieurs sorties (28) pour la matière grossière, comportant un rotor de séparateur (1, 9, 12) tourillonné à ses deux extrémités et dont l'axe est horizontal, ainsi qu'une couronne d'aubes qui délimite l'espace de séparation, fixe la direction de l'air de séparation et comporte des aubes (19) qui sont réglables dans une direction tangentielle d'incidence de l'écoulement, par rapport à la périphérie du rotor de séparateur, et qui sont percées dans un secteur, pour l'évacuation de la matière grossière,
    caractérisé en ce que
    la distance radiale des aubes (19) de la couronne d'aubes par rapport à l'axe du rotor de séparateur est réglable,
    dans le secteur, au moins une trémie de chargement (16) est prévue pour amener la matière à séparer à l'intérieur de la couronne d'aubes,
    en ce que le rotor de séparateur (1, 9, 12) est conçu à la fois en tant que séparateur et en tant que ventilateur de travail, et en ce que pour la séparation de la matière fine, le rotor de séparateur (1, 9, 12) est traversé, dans au moins un premier tronçon longitudinal (2), par l'air de séparation et de la matière fine, de l'extérieur vers l'intérieur, avec une faible vitesse radiale correspondante, et est traversé, dans au moins un second tronçon longitudinal (5), pour l'évacuation de l'air de séparation et de la matière fine, de l'intérieur vers l'extérieur, avec une vitesse radiale plusieurs fois supérieure.
  2. Séparateur centrifuge à turbine selon la revendication 1, caractérisé en ce que le rotor de séparateur (1, 9, 12) comporte des seconds tronçons longitudinaux relativement courts (5) pour évacuer l'air de séparation et la matière fine en un ou plusieurs emplacements, de préférence en position médiane, entre deux premiers tronçons longitudinaux plus longs (2) servant à amener l'air de séparation et la matière fine.
  3. Séparateur centrifuge à turbine selon la revendication 2, caractérisé en ce que le diamètre du rotor de séparateur a des valeurs différentes dans les tronçons longitudinaux (2, 5) servant à amener et à évacuer le mélange de matière fine et d'air de séparation.
  4. Séparateur centrifuge à turbine selon la revendication 2 ou 3, caractérisé en ce que les seconds tronçons longitudinaux relativement courts (5) sont conçus en tant que ventilateur (8) pour évacuer le mélange de matière fine et d'air de séparation.
  5. Séparateur centrifuge à turbine selon l'une des revendications 2 à 4, caractérisé en ce que des garnitures d'étanchéité (3) sont disposées sur la périphérie du rotor de séparateur, entre les tronçons longitudinaux (2, 5) servant à amener et à évacuer le mélange de matière fine et d'air de séparation.
  6. Séparateur centrifuge à turbine selon l'une des revendications 2 à 5, caractérisé en ce que le rapport diamètre/longueur dans les premiers tronçons longitudinaux (2) servant à amener le mélange de matière fine et d'air de séparation est un rapport de 1:1 ou plus.
  7. Séparateur centrifuge à turbine selon l'une des revendications 1 à 6, caractérisé en ce que, dans le cas d'unités formant séparateurs de taille plus importante, le rotor de séparateur est entraíné des deux côtés.
  8. Séparateur centrifuge à turbine selon l'une des revendications 1 à 7, caractérisé en ce que l'entraínement du rotor de séparateur est réglable.
  9. Séparateur centrifuge à turbine selon l'une des revendications 1 à 8, caractérisé en ce, que dans les premiers tronçons longitudinaux (2), l'arrivée et l'évacuation de la matière de chargement et de la matière grossière sont disposées dans un ou plusieurs secteurs à aubes, de telle sorte qu'alternativement la matière de chargement soit amenée tangentiellement au rotor de séparateur et que la matière grossière soit éloignée du rotor de séparateur tangentiellement à celui-ci.
  10. Séparateur centrifuge à turbine selon l'une des revendications 1 à 9, caractérisé en ce que l'amenée de la matière de chargement s'effectue pneumatiquement.
  11. Séparateur centrifuge à turbine selon la revendication 10, caractérisé en ce que la matière de chargement est préalablement dispersée avant d'être amenée au séparateur.
  12. Séparateur centrifuge à turbine selon l'une des revendications 2 à 11, caractérisé en ce que plusieurs dispositifs d'amenée et d'évacuation sont répartis sur la longueur du rotor de séparateur, afin de charger ce dernier uniformément.
  13. Séparateur centrifuge à turbine selon l'une des revendications 1 à 12, caractérisé en ce que la vitesse radiale pour l'évacuation du mélange de matière fine et d'air de séparation est 3 à 6 fois supérieure à la vitesse radiale pour l'amenée du mélange de matière fine et d'air de séparation.
EP92116543A 1991-09-27 1992-09-28 Séparateur centrifuge à turbine Expired - Lifetime EP0534483B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4132339 1991-09-27
DE4132339A DE4132339C2 (de) 1991-09-27 1991-09-27 Turbo-Fliehkraftsichter

Publications (3)

Publication Number Publication Date
EP0534483A2 EP0534483A2 (fr) 1993-03-31
EP0534483A3 EP0534483A3 (en) 1994-10-26
EP0534483B1 true EP0534483B1 (fr) 1998-03-25

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ID=6441694

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Application Number Title Priority Date Filing Date
EP92116543A Expired - Lifetime EP0534483B1 (fr) 1991-09-27 1992-09-28 Séparateur centrifuge à turbine

Country Status (3)

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EP (1) EP0534483B1 (fr)
AT (1) ATE164331T1 (fr)
DE (2) DE4132339C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10350518A1 (de) * 2003-10-29 2005-06-09 Khd Humboldt Wedag Ag Sichtereinrichtung zum Sichten von körnigem Gut
DE102018132155B3 (de) 2018-12-13 2019-12-12 Netzsch-Feinmahltechnik Gmbh Fliehkraftsichter mit speziellem sichterrad

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767045A (en) * 1970-03-18 1973-10-23 Siempelkamp Gmbh & Co Closed circuit multi-stage air classifier
DE3814458A1 (de) * 1988-04-28 1989-11-09 Krupp Polysius Ag Windsichter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE521082C (de) * 1925-11-07 1931-03-16 Hermann Hildebrandt Sichter mit einem einem Geblaese vorgeschalteten Sichtrad
US4409097A (en) * 1981-10-16 1983-10-11 Omya Gmbh Improved pivotable centrifugal classifier and method of classifying
DE3539512A1 (de) * 1985-11-07 1987-05-14 Krupp Polysius Ag Sichter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767045A (en) * 1970-03-18 1973-10-23 Siempelkamp Gmbh & Co Closed circuit multi-stage air classifier
DE3814458A1 (de) * 1988-04-28 1989-11-09 Krupp Polysius Ag Windsichter

Also Published As

Publication number Publication date
DE59209249D1 (de) 1998-04-30
DE4132339C2 (de) 1993-12-02
EP0534483A3 (en) 1994-10-26
DE4132339A1 (de) 1993-04-08
ATE164331T1 (de) 1998-04-15
EP0534483A2 (fr) 1993-03-31

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