EP0534483A2 - Séparateur centrifuge à turbine - Google Patents

Séparateur centrifuge à turbine Download PDF

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Publication number
EP0534483A2
EP0534483A2 EP92116543A EP92116543A EP0534483A2 EP 0534483 A2 EP0534483 A2 EP 0534483A2 EP 92116543 A EP92116543 A EP 92116543A EP 92116543 A EP92116543 A EP 92116543A EP 0534483 A2 EP0534483 A2 EP 0534483A2
Authority
EP
European Patent Office
Prior art keywords
turbine
centrifugal classifier
air
fine material
classifier according
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
EP92116543A
Other languages
German (de)
English (en)
Other versions
EP0534483A3 (en
EP0534483B1 (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 according to the preamble of claim 1.
  • the invention has for its object to improve the turbo centrifugal classifier in terms of the operating frequencies and in terms of the diameter-length ratio.
  • the fine material-visual air mixture is sucked on the correspondingly large longitudinal sections of the turbine with the radial speed required for sifting from the outside inwards and on correspondingly short longitudinal sections of the turbine with a much higher, e.g. B. 3-6 times radial speed sucked inside out.
  • This allows z. B. turbine lengths with an effective field of view of a diameter-length ratio of about 1: 4 to 1: 8 can be constructed, which in turn can increase the throughput significantly.
  • the arrangement of the section-by-section suction and suction on the turbine casing for the fine material / visual air mixture according to the present invention has the advantage that the pressure drop generated by the turbine, which would have to be overcome for the suction by an external fan, except for a small one Pressure losses are virtually eliminated. Since this pressure drop for sifting at high fineness is not insignificantly high and accordingly large, z. T. two-stage blowers arranged one behind the other and consequently corresponding pressure-resistant air duct and filter devices would be necessary, these can be used in the present invention, for. T. omitted, or simplified significantly.
  • FIG. 1 shows a known grinding / vision circuit with a turbofly force classifier 1, e.g. B. for grinding cement. It is loaded by a ball mill 2.
  • the feed material 9 is fed from a silo 4 via a cell lock 3, controllably supplied to the ball mill 2 after the balding in the ball mill 2, the ball mill material 13 is transferred via a bucket elevator 11 and a screw 6 to the turbo centrifugal separator 1 by means of a cell lock 3 given up.
  • the ball mill material 13 is distributed over the entire length of the turbo centrifugal classifier 1 by means of a feed channel 10.
  • the coarse material 12 falls down into a screw conveyor 6 and, with the exclusion of air, returns to the task of the ball mill 2 by means of a cell lock 3.
  • the fine material 17 is extracted together with the classifying air 14 by the turbine of the turbo centrifugal separator 1 and fed to cyclone separators 5. A large proportion of fine material 17 is separated there and discharged by means of cell locks 3.
  • the classifying air 14 and the smaller proportion of fine material 17 reach a dedusting filter 16.
  • classifying material 17 is separated from the classifying air and also discharged via a cell lock 3.
  • a fan 15 draws the classifying air 14 out of the system and conveys it out of the grinding class to the outside.
  • several powerful classifiers had to be placed side by side in order to be able to absorb the throughput. This led to more complicated and complex machine arrangements, the greatest difficulty being to set the sifters next to each other to the same fine grain size in order to get a uniform product.
  • FIGS. 2 to 4 show different embodiments of the turbines using reference numbers that are used differently from those of FIG. 1.
  • FIG. 2 shows a two-sided turbine 1 with a diameter / length ratio D / L of approximately 1: 1.
  • the larger length section 2, used for classifying and flowing through from the outside inwards, is separated by a seal 3 on the circumference of the turbine 1 from the smaller length section 5, used for suctioning off the fine-air mixture 4, through which the flow flows from the inside outwards.
  • the visual space 6 is located above the larger length section 2 and the ventilation space 7, which is used to extract the fine air / air mixture 4, is located above the shorter length section 5, which also could be designed as a fan with ventilation blades 8 of the same or larger diameter than these in the field of vision.
  • FIG. 3 shows a two-sided turbine 9 with a diameter / length ratio D / L of approximately 1: 2.
  • D / L diameter / length ratio
  • the view chamber 6 and the valve chamber 7 are separated from one another by two seals 3 on the circumference of the turbine 9.
  • the bearing 10 is located on both ends of the turbine 9.
  • the turbine 9 is driven by a motor 11.
  • FIG. 4 shows a two-sided turbine 12 with a diameter / length ratio D / L of approximately 1: 4.
  • This turbine is provided with two common length sections 5, which are provided for suction and which are fed by fine length air sections 4 and 13 with fine air / air mixture 4, the middle length section 13 being approximately twice as large as a length section 2
  • the turbine 12, which is supported on two sides in the bearings 10, is driven by two motors 11, which are connected to the turbine 12 by means of couplings 14, as are the turbines 1 and 9 by the motors 11.
  • turbines can be constructed to a certain extent as in a modular principle and extended to an arbitrary length corresponding to the strength of the turbine, with a diameter / length ratio D / L of up to 1: 6 or 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 classifier with a diameter / length ratio D / L of approx. 1: 2.
  • the turbine 1 with the shaft 2 is driven on one side via the shaft journal 3.
  • the storage takes place on two sides in the bearings 4, which are built on the lower housing part 5.
  • the turbine 1 has two viewing zones 6 for the suction and one zone 8 for the suction of the fine material / viewing air mixture 7.
  • the turbine blades 9 have the same diameter in all zones (6 and 8). Between the zones (6 and 8) there are two seals 10, which prevent unvisited feed material 11 from getting into the fine material classifying air space 12.
  • Two double-sided air conveying channels 15 distribute the feed material 11 into a plurality of feed hoppers 16 which are arranged tangentially in the direction of rotation along the length of the turbine 1 and which ensure that that the feed material 11 is evenly distributed over the length of the turbine 1 in the region of the viewing zones 6.
  • the suction of the sight air 17 takes place via a suction opening 18 in the lower housing part 5 and is passed through the air guide vanes 19 arranged on the circumference of the turbine 1 in such a way that the sight air 17 hits the turbine 1 tangentially and in the inner circle of the air guide vanes 19 feed material 11 tears with it and sets in a circular motion in the direction of rotation of the turbine 1.
  • the vision process described above begins, which causes the coarse material 20 to be thrown outwards and the fine material 21 with the air 17 through the Visible zones 6 is sucked through and is fed as a clean material / mixed air mixture 7 via the suction zone 8 into the spiral fine material / clear air space 12 and the suction nozzle 22 of a dust collecting device.
  • the air guide vanes 19 are arranged to be adjustable both in the tangential flow direction 23 to the trubine 1 and in their distance 24 from the center of the turbine 1 in order to achieve the optimal visual effect.
  • the coarse material 20, which circles on the inner diameter of the air guide vanes 19, is alternately discharged through coarse material channels 25 in the area of the feed funnels 16 into a specific sector through the air guide vanes 19 into the coarse material collecting space 26 and arranged on two sides Air conveyor troughs 27 are supplied to the coarse material outlet 28.
  • Both the suction opening 18 for the suction of the visual air 17 and the suction nozzle 22 for the suction of the fine material-air mixture 7 can be rotated by 90 ° around the turbine axis in order to find a favorable arrangement in an overall system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Centrifugal Separators (AREA)
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 true EP0534483A2 (fr) 1993-03-31
EP0534483A3 EP0534483A3 (en) 1994-10-26
EP0534483B1 EP0534483B1 (fr) 1998-03-25

Family

ID=6441694

Family Applications (1)

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)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (1)

* 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

Citations (5)

* 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
US3767045A (en) * 1970-03-18 1973-10-23 Siempelkamp Gmbh & Co Closed circuit multi-stage air classifier
US4409097A (en) * 1981-10-16 1983-10-11 Omya Gmbh Improved pivotable centrifugal classifier and method of classifying
EP0221246A2 (fr) * 1985-11-07 1987-05-13 Krupp Polysius Ag Séparateur pneumatique
DE3814458A1 (de) * 1988-04-28 1989-11-09 Krupp Polysius Ag Windsichter

Patent Citations (5)

* 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
US3767045A (en) * 1970-03-18 1973-10-23 Siempelkamp Gmbh & Co Closed circuit multi-stage air classifier
US4409097A (en) * 1981-10-16 1983-10-11 Omya Gmbh Improved pivotable centrifugal classifier and method of classifying
EP0221246A2 (fr) * 1985-11-07 1987-05-13 Krupp Polysius Ag Séparateur pneumatique
DE3814458A1 (de) * 1988-04-28 1989-11-09 Krupp Polysius Ag Windsichter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
ATE164331T1 (de) 1998-04-15
EP0534483A3 (en) 1994-10-26
DE4132339C2 (de) 1993-12-02
EP0534483B1 (fr) 1998-03-25
DE59209249D1 (de) 1998-04-30
DE4132339A1 (de) 1993-04-08

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