EP0377826A2 - Séparateur pneumatique - Google Patents

Séparateur pneumatique Download PDF

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Publication number
EP0377826A2
EP0377826A2 EP89122490A EP89122490A EP0377826A2 EP 0377826 A2 EP0377826 A2 EP 0377826A2 EP 89122490 A EP89122490 A EP 89122490A EP 89122490 A EP89122490 A EP 89122490A EP 0377826 A2 EP0377826 A2 EP 0377826A2
Authority
EP
European Patent Office
Prior art keywords
distribution plate
rotor
crop
crop distribution
guide
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
EP89122490A
Other languages
German (de)
English (en)
Other versions
EP0377826A3 (fr
EP0377826B1 (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 relates to a classifier according to the preamble of claim 1.
  • a classifier according to the preamble of claim 1 is known for example from EP-A-0 221 246.
  • the crop distribution plate is located above the rotor, with the crop to be sifted through the ceiling of the classifier housing.
  • the goods, which are evened out by the crop distribution plate, are entered from above into the visual space located between the stationary guide apparatus and the rotor.
  • the invention has for its object to develop the classifier according to the preamble of claim 1 so that its construction is simplified and at the same time there is a reduction in the height of the classifier and the circulation bucket used for feeding the material to be classified.
  • the crop distribution plate is arranged underneath the rotor and diffuser in such a way that the material thrown off by the crop distribution disc reaches the flow of sight air flowing into the diffuser.
  • the arrangement of the crop distribution plate underneath the rotor and the diffuser significantly simplifies the design.
  • the elimination of a good distribution plate on the upper side of the rotor results in a significant simplification of the seal between the rotor and the duct used for discharging the fine air laden with fine air. Since the material to be sifted is no longer fed through the ceiling of the classifier housing, the devices used to adjust the guide vanes of the guide apparatus can be arranged on the ceiling of the classifier housing without difficulty.
  • the arrangement of the crop distribution plate below the rotor and diffuser also reduces the height of the classifier. Due to the outside and much deeper connection of the material feed device, the outer circulation bucket used for feeding the material to be classified can also be kept shorter. Finally, it is advantageous that a simple standardization of the design is possible for classifiers with and without crop distribution plate, since the essential components, such as guide vane attachment and adjustment, crop feeder channel and outer housing, are the same in both cases.
  • the arrangement of a nozzle that increases the gas velocity of the classifying air flow in the zone in which the product thrown off by the product distribution plate enters the classifying air flow ensures reliable pneumatic transport of the product to 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 are adjustable 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 device 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 attached to a cone 15 serving 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 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 good distribution plate 13 corresponds to the embodiment described in EP-A-0 221 246.
  • the material is in the radial direction to the outside in the spreading plate 16 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).
  • a nozzle 35 penetrated by the classifying air flow with a high gas velocity and low pressure loss is provided. In this way, the material thrown by the material distribution plate 13 is reliably fed to the diffuser 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 drawing shows the other advantages of the classifier according to the invention: - Between the rotor 2 and the channel 12 there is a simple seal by means of a cylindrical connecting piece 31 spanning the rotor at a short distance. - The guide vanes 8 can be actuated in a simple manner by means of the adjusting devices 9 attached to the ceiling of the housing 1. - The arrangement of the crop distribution plate 13 and the spreading plate 16 below the diffuser 7 and rotor 2 results in a significant reduction in the height of the classifier.
  • 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 further 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)
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 true EP0377826A2 (fr) 1990-07-18
EP0377826A3 EP0377826A3 (fr) 1991-07-03
EP0377826B1 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025458A1 (de) * 1990-08-10 1992-02-13 Leschonski Kurt Dr Ing Verfahren und vorrichtung zum spiralwindsichten in sichtern mit beschaufelten rotoren
CN103381387A (zh) * 2012-05-02 2013-11-06 阿尔斯通技术有限公司 可调式磨机分类器
DE102016203420A1 (de) * 2016-03-02 2017-09-07 Thyssenkrupp Ag Sichter zum Sichten eines Materialstroms

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2014117031A1 (fr) 2013-01-24 2014-07-31 Lp Amina Llc Dispositif de classification
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308949A (en) * 1964-01-02 1967-03-14 Pfeiffer Barbarossawerke Sifter of the circulating air type
FR2567777A1 (fr) * 1984-07-17 1986-01-24 Kloeckner Humboldt Deutz Ag Separateur pneumatique a cyclones pour la separation de matiere de granulometries differentes, notamment de ciment
DE3533484A1 (de) * 1984-03-21 1987-03-26 Krupp Polysius Ag Umluftsichter
EP0221246A2 (fr) * 1985-11-07 1987-05-13 Krupp Polysius Ag Séparateur pneumatique

Family Cites Families (8)

* 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
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
DE3521638C2 (de) * 1985-06-15 1994-03-31 Kloeckner Humboldt Deutz Ag Streuwindsichter zum Sichten von feinkörnigem Gut
DE8606061U1 (de) * 1986-03-05 1986-04-17 Krupp Polysius Ag, 4720 Beckum Vorrichtung zum feinverteilten Einstreuen von Gut in den Sichtraum eines Windsichters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308949A (en) * 1964-01-02 1967-03-14 Pfeiffer Barbarossawerke Sifter of the circulating air type
DE3533484A1 (de) * 1984-03-21 1987-03-26 Krupp Polysius Ag Umluftsichter
FR2567777A1 (fr) * 1984-07-17 1986-01-24 Kloeckner Humboldt Deutz Ag Separateur pneumatique a cyclones pour la separation de matiere de granulometries differentes, notamment de ciment
EP0221246A2 (fr) * 1985-11-07 1987-05-13 Krupp Polysius Ag Séparateur pneumatique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025458A1 (de) * 1990-08-10 1992-02-13 Leschonski Kurt Dr Ing Verfahren und vorrichtung zum spiralwindsichten in sichtern mit beschaufelten rotoren
CN103381387A (zh) * 2012-05-02 2013-11-06 阿尔斯通技术有限公司 可调式磨机分类器
EP2659988A1 (fr) 2012-05-02 2013-11-06 Alstom Technology Ltd Classificateur de laminoir réglable
DE102016203420A1 (de) * 2016-03-02 2017-09-07 Thyssenkrupp Ag Sichter zum Sichten eines Materialstroms

Also Published As

Publication number Publication date
US5055182A (en) 1991-10-08
DE3900779A1 (de) 1990-07-19
DE58907239D1 (de) 1994-04-21
BR9000014A (pt) 1990-10-09
ES2050771T3 (es) 1994-06-01
ZA899459B (en) 1990-09-26
EP0377826A3 (fr) 1991-07-03
EP0377826B1 (fr) 1994-03-16

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