EP1153661B1 - Mühlensichter - Google Patents

Mühlensichter Download PDF

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Publication number
EP1153661B1
EP1153661B1 EP01106480A EP01106480A EP1153661B1 EP 1153661 B1 EP1153661 B1 EP 1153661B1 EP 01106480 A EP01106480 A EP 01106480A EP 01106480 A EP01106480 A EP 01106480A EP 1153661 B1 EP1153661 B1 EP 1153661B1
Authority
EP
European Patent Office
Prior art keywords
guide
mill classifier
horizontal
classifier according
flow
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
EP01106480A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1153661A1 (de
Inventor
Markus Dipl.-Phys. Schmitt
Winfried Dr.-Ing. Ruhkamp
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.)
Loesche GmbH
Original Assignee
Loesche 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 Loesche GmbH filed Critical Loesche GmbH
Publication of EP1153661A1 publication Critical patent/EP1153661A1/de
Application granted granted Critical
Publication of EP1153661B1 publication Critical patent/EP1153661B1/de
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
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • 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
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/32—Passing gas through 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier

Definitions

  • the invention relates to a mill classifier, in particular a roller mill classifier, according to the preamble of the claim 1.
  • DE 36 17 746 A1 discloses a roller mill with an attached Classifier known which a fixed Leitklappenkranz and a concentrically arranged, rotating Has lamellae basket. Between the classifier housing and the Leitklappenkranz is a cylindrical Annular space formed, which leads to an increase in speed of the laden with the grain to be examined fluid should lead.
  • the fixed baffles of the Leitklappenkranzes are to the tangential flow of the rotating Lamellare in the direction of rotation and the slats of the Display basket set in the opposite direction, whereby the visual result should be improved.
  • EP 0 204 412 B1 discloses a mill classifier, whose rotating lamellar viewing basket is adjustable Leitschaufelsystem is concentrically surrounded.
  • the vane system consists of two or more nozzle sets, which are arranged one above the other on stationary rings and are independently adjustable.
  • the lamellae used in the aforementioned mill classifiers or inguinal rotor usually has a number of strips which is at least twice as high as the standard classifiers, which has a cone-shaped inguinal rotor screwed on a double cone rotor, slanted Have visible strips.
  • the guide damper has adjustable and flow-optimized Leaflets, which one rising from the mill Regrind fluid flow to a tangential to radial Flow of rotor blades, which are vertical and not are arranged more obliquely and a radial dimensioning have, forces.
  • the proposed selective separator Advantageously, not only rotor bars as in Lesche-Kumblel- / basket-classifier LKS, but also its classifier housing and classifier top, drive and drive shaft on. The space for the rising regrind fluid flow thus narrows over the height of the Leitklappenkranzes, causing the particle flow in the flow channels of the Leitklappenkranzes in is accelerated.
  • the invention has for its object to provide a mill classifier for an ascending Mahlgut fluid mixture, in particular a Wälzmühlenseer, which ensures a high selectivity and a homogenization of the flow of the rotor blades on their height at a comparatively low production costs.
  • the invention is based on the idea, one possible uniform radial velocity over the height of the Rotor strips by a horizontal subdivision of the flow channels to reach the static diffuser. tries have shown that an arrangement of horizontal intermediate rings on inguinal rotor to no change in the admission the upper portions of the rotor strips leads.
  • This semolina cloud passes under Gravity effect the viewing area or viewing gap of top down over its entire height before entering the flow-calmed semolina cone below the baffles falls. While passing the journalspaltes is the Gr manewolke but constantly from the fluid, which from the grinding chamber upwards and through the flow channels of the Leitklappenkranzes flows, blown again. With flow channels of the Leitklappenkranzes without a horizontal subdivision this blowing happens with a distinct vertical Flow component in the flow channels of the guide flaps, which are directed upwards and only slightly inwards is. However, this vertical flow component hinders significantly the free fall of the concentrated semolina cloud.
  • the horizontal baffles to the Flaps attached, welded, for example.
  • the baffles At least on their Wear side to form wear-resistant and, for. with a wear-resistant material, armor or coating to provide.
  • the horizontal baffles are evenly spaced attached to each other on the baffles.
  • the required Fines may be beneficial to the horizontal Baffles with one up or down to arrange decreasing distance.
  • the horizontal Baffles each at two adjacent vanes of a Flow channel fixed, in particular welded become.
  • baffles In Leitklappenkränzen with adjustable arranged vanes it is advantageous to the horizontal baffles to be attached to the baffles in a flying manner.
  • the baffles in each case only on one side of the guide flaps horizontally be arranged, it is for a changeable angular adjustment of the baffles useful, the baffles form such that an adjustment distance to the adjacent Guide flap is present.
  • the horizontal Baffles mounted on both sides of a deflector, flying where both baffles are the same or different Width may have.
  • baffles of two adjacent baffles in such a way that they are with their free edge areas overlap.
  • the attachment of the overlapping baffles should be done at the adjacent vanes so that they are in the overlap area only with a small Distance, but against each other adjustable superimposed.
  • the horizontal Subdivision of the flow channels of the Leitklappenkranzes with Help made by horizontal guide rings or ring segments become.
  • the horizontal guide rings or ring segments can then at the leading edges, for example, flow pipes, the flow-optimized vanes are attached.
  • An adjustment of the baffles is by horizontal Recesses which are complementary to the guide rings or Ring segments, for example, slit-like design can, guaranteed.
  • Fig. 1 shows a rolling mill classifier 2, which in a Roller mill (not shown) integrated or on this can be put on.
  • the roller mill classifier 2 is a selective sifter, which is a rod sifter with an upstream baffle system is.
  • the rolling mill classifier 2 essentially has one Housing 30, an upper housing part 31 with outlet nozzle for Fine material 34, a strip rotor 6 with vertically arranged Rotor strips 7 and a concentric with the strip rotor. 6 arranged Leitklappenkranz 4, between which a Classifying space 17 is formed.
  • the Rotor bars 7 of the cylindrical guide rotor 6 are almost the same height as the guide flaps 5 of the Leitklappenkranzes 4 on.
  • the guide flaps 5 of the Leitklappenkranzes 4 are optimized flow trained and can be up for a tangential radial outflow are adjusted about a vertical axis 9 (see also Fig. 2).
  • As horizontal guidance devices are baffles 8 in a substantially horizontal orientation attached to the baffles 5.
  • baffles 8 in a substantially horizontal orientation attached to the baffles 5.
  • each five horizontal baffles 8 formed in each of two vanes 5 Flow channels 13 arranged and form six sub-channels 23 for a fanned flow of the rotor strips. 7
  • the flow channels 13 and sub-channels 23 go from the figures 2 to 4, in which training variants of the horizontal Guides or baffles 8 and their arrangement represented in the region of the Leitklappenkranzes 4 are.
  • Fig. 2 shows a plan view of a section of a horizontal section through the mill classifier 2.
  • a base plate 18 On a base plate 18 are adjustable, flow-optimized baffles 5 arranged and surrounded to a Leitklappenkranz 4 a strip rotor 6 concentric.
  • the rotor strips 5 of the inguinal rotor 6 can as Z-bars according to the lower Part of Fig. 2 or as radially oriented flat bars formed of lesser radial extent than the Z-strips be (see upper part in Fig. 2).
  • the guide flaps 5 each have a flow pipe as a rounded Leading edge 10 and a vertical baffle 11 on which tangentially to the leading edge 10 with the help fasteners 16, e.g. mounting flanges, is attached.
  • the guide flaps 5 are around a vertical Axis 9 adjustable and form flow channels 13 with a Diffuser effect. It is based on the already cited German Patent Application 199 61 837.2 referenced which component of the present application.
  • FIG. 2 An approximately in the middle of Fig. 2 illustrated flow channel 13, in a first variant, has a horizontal Guide plate 8, which on the vertical guide plates 11th the adjacent guide flaps 5 is welded.
  • Arrangement of the horizontal baffles 8 requires a fixed arrangement of the guide flaps, which thus not adjusted can be (see also Fig. 3).
  • baffles 8 each formed on both sides of the guide flaps 5 and overlap in an overlap area 14.
  • the baffles 5 for a required adjusted tangential to radial outflow become.
  • Fig. 3 shows a partial view of the middle flow channel 13 to arrow A of Fig. 2, but with fixed Leader 5.
  • the leaflets 5 are on a base plate Welded 18 and have stacked, horizontal baffles 8, which the flow channel Divide 13 into several sub-channels 23.
  • the lower upstream sides 15 of the horizontal baffles 8 are resistant to wear educated.
  • FIG. 4 shows a partial view according to arrow B in FIG. 2 again and shows a flow channel 13, which of pivotable, flow-optimized baffles 5 formed is.
  • baffles 5 are the horizontal baffles 8 on both sides of Leitklappen 5 and not shown here vertical Guiding plates 11 attached and with an adjustment 12th formed to the respective adjacent guide flap 5.
  • vertical Guiding plates 11 attached and with an adjustment 12th formed to the respective adjacent guide flap 5.
  • the horizontal baffles 8 are so on the baffles 5 or their vertical baffles 11 attached, In particular, they welded with a small Distance over each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Disintegrating Or Milling (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Seasonings (AREA)
EP01106480A 2000-05-09 2001-03-22 Mühlensichter Expired - Lifetime EP1153661B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10022536A DE10022536A1 (de) 2000-05-09 2000-05-09 Mühlensichter
DE10022536 2000-05-09

Publications (2)

Publication Number Publication Date
EP1153661A1 EP1153661A1 (de) 2001-11-14
EP1153661B1 true EP1153661B1 (de) 2005-08-10

Family

ID=7641291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106480A Expired - Lifetime EP1153661B1 (de) 2000-05-09 2001-03-22 Mühlensichter

Country Status (5)

Country Link
EP (1) EP1153661B1 (es)
AT (1) ATE301500T1 (es)
DE (2) DE10022536A1 (es)
DK (1) DK1153661T3 (es)
ES (1) ES2246266T3 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038776A1 (de) 2008-08-12 2010-02-25 Loesche Gmbh Verfahren zur Sichtung eines Mahlgut-Fluid-Gemisches und Mühlensichter
CN104994968A (zh) * 2013-02-15 2015-10-21 蒂森克虏伯工业解决方案股份公司 一种分级机及操作分级机的方法

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI483787B (zh) * 2007-09-27 2015-05-11 Mitsubishi Hitachi Power Sys A grading device and an upright pulverizing device having the classifying device and a coal fired boiler device
CN101259467B (zh) * 2008-04-25 2012-01-25 中信重工机械股份有限公司 一种用于水泥原料、熟料及矿渣立式辊磨的选粉机
FR2936171B1 (fr) * 2008-09-19 2011-07-15 Broyeurs Poittemill Ingenierie Selecteur de particules a flux d'air avec etancheite renforcee
DE102016121925A1 (de) 2016-11-15 2018-05-17 Neuman & Esser Gmbh Mahl- Und Sichtsysteme Sichter, Mühle und Verfahren zum Sichten eines Gas-Feststoff-Gemischs
DE102016121927B3 (de) * 2016-11-15 2018-01-18 Neuman & Esser Gmbh Mahl- Und Sichtsysteme Sichter und Mühle mit einem Sichter
CN108057508B (zh) * 2017-12-14 2020-11-24 成都建筑材料工业设计研究院有限公司 风送干式磁选机
DE202018101770U1 (de) 2018-03-29 2018-04-09 Khd Humboldt Wedag Gmbh Stabkorbsichter mit Ausblasöffnungen im Gehäuse
DE202018101767U1 (de) 2018-03-29 2018-04-10 Khd Humboldt Wedag Gmbh Stabkorbsichter mit in Einlasskanal integrierten Prallblechen
DE202018101769U1 (de) 2018-03-29 2018-04-10 Khd Humboldt Wedag Gmbh Stabkorbsichter mit Auslassöffnungen im Gehäuse
CN109482487B (zh) * 2018-12-26 2023-08-04 保定中狼服饰材料有限公司 一种羽绒加工筛分装置
CN115254360B (zh) * 2022-07-18 2023-09-05 湛江市恒润机械有限公司 一种顶部进料与多层分级阶梯式超微粉碎装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597537A (en) * 1982-09-14 1986-07-01 Onoda Cement Company, Ltd. Vertical mill
GB2176134A (en) 1985-06-03 1986-12-17 Smidth & Co As F L Separator for sorting particulate material
DE3617746A1 (de) * 1986-05-27 1987-12-10 Pfeiffer Ag Geb Luftstrom-mahlanlage
DE3622413C2 (de) * 1986-07-03 1995-08-03 Krupp Polysius Ag Sichter
GB9827670D0 (en) * 1998-12-17 1999-02-10 Erozlu Metin Classifier
DE19961837A1 (de) 1999-12-21 2001-06-28 Loesche Gmbh Mühlensichter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038776A1 (de) 2008-08-12 2010-02-25 Loesche Gmbh Verfahren zur Sichtung eines Mahlgut-Fluid-Gemisches und Mühlensichter
JP2011530404A (ja) * 2008-08-12 2011-12-22 ロエシェ ゲーエムベーハー 土壌物質−流体混合物の分級方法および粉砕分級機
DE102008038776B4 (de) * 2008-08-12 2016-07-07 Loesche Gmbh Verfahren zur Sichtung eines Mahlgut-Fluid-Gemisches und Mühlensichter
CN104994968A (zh) * 2013-02-15 2015-10-21 蒂森克虏伯工业解决方案股份公司 一种分级机及操作分级机的方法
CN104994968B (zh) * 2013-02-15 2018-10-26 蒂森克虏伯工业解决方案股份公司 一种分级机及操作分级机的方法

Also Published As

Publication number Publication date
EP1153661A1 (de) 2001-11-14
DE10022536A1 (de) 2001-11-29
ATE301500T1 (de) 2005-08-15
DK1153661T3 (da) 2005-12-12
DE50107012D1 (de) 2005-09-15
ES2246266T3 (es) 2006-02-16

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