EP0173065A2 - Broyeur à cylindres - Google Patents

Broyeur à cylindres Download PDF

Info

Publication number
EP0173065A2
EP0173065A2 EP85109043A EP85109043A EP0173065A2 EP 0173065 A2 EP0173065 A2 EP 0173065A2 EP 85109043 A EP85109043 A EP 85109043A EP 85109043 A EP85109043 A EP 85109043A EP 0173065 A2 EP0173065 A2 EP 0173065A2
Authority
EP
European Patent Office
Prior art keywords
rolling mill
mill according
guide vane
vane ring
deflector
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.)
Withdrawn
Application number
EP85109043A
Other languages
German (de)
English (en)
Other versions
EP0173065A3 (fr
Inventor
Heinrich Dipl.-Ing. Henne
Gotthardt Dipl.-Ing. Blasczyk
Hubert Dipl.-Ing. Eickholt
Ludger Ing. Grad. 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 EP0173065A2 publication Critical patent/EP0173065A2/fr
Publication of EP0173065A3 publication Critical patent/EP0173065A3/fr
Withdrawn legal-status Critical Current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
    • B02C23/18—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
    • 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 roller mill according to the preamble of claim 1.
  • a roller mill of the required type is known from DE-AS 19 38 772.
  • a classifying part is arranged above a grinding part, which contains a grinding track and rolling elements rolling thereon, the classifying chamber of which is in flow communication with the grinding part, an air stream coming from the grinding part being loaded with comminuted material through an air flow on the upper outer periphery of the classifying chamber provided guide vane ring (as a passage connection) in the viewing space.
  • the not yet comminuted ground material (coarse material) is to be separated and returned to the grinding path through the funnel arranged below.
  • an impeller rotating about a vertical shaft is arranged in the area above the guide vane ring and is axially traversed by the fine air stream flowing up to the suction nozzle, with the aim of securing the fine material conveyed upward with the air stream.
  • the invention has for its object to improve a roller mill of the type required in the preamble of claim 1 in such a way that especially when sifting the regrind he a further increased selectivity, a greater fineness of the finished goods and an even better adjustable grain width can be achieved.
  • the rotating element above the viewing space and the guide vane ring is designed in the form of a deflector rotor in the manner mentioned, the air flow loaded with fine material and flowing upward to the extraction nozzle is not axially, but in contrast to the known embodiment explained above first passed through the rotating element approximately radially inwards.
  • the coarse particles still contained in the fine material are partially exposed to an impact and partly to a centrifugal effect, causing them to fall into the lower part of the visible space and thus into the coarse material hopper and from there to the grinding path for further comminution.
  • the visual selectivity and the fineness range of the finished goods can be influenced by several expedient refinements and developments of the deflector rotor:
  • the outer circumferential openings of the deflector rotor can be delimited by baffles arranged at uniform circumferential distances from one another, which can advantageously be wing-like and adjustable.
  • the deflector rotor can have a closed bottom at its axially lower end or a bottom with openings which are adjustable in size, wherein it is in each case open at its axially upper end.
  • the guide vane ring is arranged at the upper end of the funnel having the largest diameter, while the deflector rotor, which is smaller in diameter than the guide vane ring, is located in a classifier housing part with a reduced diameter located above this guide vane ring is arranged.
  • This measure contributes to the fact that the visible air flow loaded with the F is fed in a favorable and reliable manner to the openings provided on the outer circumference of the deflector rotor.
  • roller mill according to the invention will be explained in more detail with reference to the largely schematic single drawing figure, the deflector rotor provided therein being illustrated in two different embodiments in the right and left half of the drawing.
  • roller mill 1 illustrated in the drawing is, for example, a spring roller mill; Of course, other suitable forms of the actual roller mill, e.g. Ball ring mill, find use.
  • the roller mill 1 essentially contains a lower grinding part 2 with a mill housing 3 and a classifying part 4 with an outer classifier housing 5 (e.g. flanged on) on this grinding part.
  • the grinding part 2 can be equipped in the usual way with an approximately annular grinding track 6 and rolling elements 7 (in this case in the form of spring rollers) which move relative to the grinding track 6 and thereby roll on this grinding track.
  • the grinding track 6 is rotated by a conventional drive with gear 8.
  • Air (arrows 11) is introduced into the grinding part 2 of the roller mill 1 from below via an air supply duct 9 present on the outer circumference of the grinding part 2 and an (lower) guide vane ring 10 arranged around the grinding path 6, so that regrind that falls outwards from the edge of the grinding path this air flow can be conveyed upwards into the classifying part 4 (pneumatic).
  • the classifier part 4 contains an outer, annular conveying space 12, which on the outside of the classifier housing 5 and on the inside essentially be a funnel 13 is bordered.
  • This funnel 13 in turn delimits downward a viewing space 14 arranged above the grinding part 2 or the grinding path 6, which also has a guide vane ring 15 on the outer circumference, which has a passage connection between the grinding part 2 or the grinding path 6 and the viewing space 14 forms the air flow loaded with regrind (arrows 11a).
  • the lower end 13a of the coarse material hopper 13 opens out centrally above the grinding track 6, in which area (inside or outside the lower funnel end 13a) a feed device 25 for fresh ground material coming from outside can also open out.
  • a basket-type deflector rotor 16 is arranged, which has a multiplicity of uniformly distributed openings 17 on its outer circumference and is arranged at the lower end of a vertically oriented rotary shaft 18, so that the entire structure is arranged and arranged by this deflector rotor 16 Air flow loaded with fine material (arrows 11b) passes through this deflector rotor 16.
  • This deflector rotor can - as will be explained in more detail below with reference to the left and right halves 16 and 16 '- can be designed in different ways.
  • the rotary shaft 18 of the deflector rotor 16 is supported at its upper end 18a by an outer bearing 19 in the sifter housing 5 and is supported at its lower end 18b in a lower bearing 20 which is supported by means of - optionally spring-loaded - radial tie rods 21 is centered and braced in the upper part of the classifier housing 5.
  • the upper rotary shaft end 18a is also coupled to a drive 22 which is preferably adjustable in speed.
  • the guide vane ring 15 is located at the upper end 13b of the coarse material hopper 13 with the largest diameter, and the deflector rotor 16, which is kept smaller in diameter than the guide vane ring 15, is arranged in an upper classifier housing part 5a, which is located above of L EIT blade ring 15 is located and has a contrast reduced diameter.
  • the annular space surrounding the outer circumference of the deflector rotor 16 is designed by this upper classifier housing part 5a in such a way that the air stream laden with fine material (arrows 11b) can be reliably fed to the outer circumferential openings 17 of the deflector rotor.
  • the axially upper end of the deflector rotor 16 is designed to be open in any case and is in open flow connection with the suction nozzle 23 formed on the upper classifier housing part 5a.
  • the guide vanes 15a of the visible space guide vane ring 15 are preferably adjustable in their angle of attack, for which purpose they are connected to a common adjusting device 24 arranged on the outside of the classifier housing 5.
  • the deflector rotor can be designed in various ways.
  • the outer circumference of the deflector rotor 16 has an approximately cylindrical shape.
  • the outer peripheral openings 17 are arranged at a uniform circumferential distance from one another.
  • wing-shaped guide plates 26 b e - which are approximately the same as the guide vanes 15a of the guide vane ring 15 and can preferably also be adjustable in their angle of attack.
  • the axially upper end of the deflector rotor 16 is open, the axially lower end can have a completely closed or - as indicated in the right half of the drawing figure - a perforated bottom 27, the openings 27a of which, for example, are in the manner of an aperture can be adjusted in size.
  • the bottom 27 is otherwise embodied approximately in the form of a flat disk which runs essentially at right angles to the axis of the vertical rotary shaft 18. Possibly. the openings 27a can also be adjustable from the outside.
  • the deflector rotor 16 offers three different setting options for the separation limit and sharpness, namely through the variable speed, through the adjustment of the guide plates 26 (and thus the openings 17) and the more or less strong opening or closing of the bottom openings 27.
  • the caution effect of the ground material can also be very adapted to this easily adjustable indulgence effect by adjusting the guide vanes 15a of the guide vane ring 15 accordingly.
  • the deflector rotor 16 ' is designed with an approximately frustoconical outer circumference, the truncated cone base with the smaller diameter facing the visible space 14 and the truncated cone base with the larger diameter facing the suction nozzle 23.
  • the guide plates 26 'delimiting the outer circumferential openings 17' in the same way are therefore arranged inclined downwards.
  • a completely closed base 28 is provided at the axially lower end of the deflector rotor 16 ′, which is designed in the form of a cone sloping towards the outer circumference.
  • This conically sloping bottom 28 proves to be particularly favorable for roller mill designs which are used as coal mills.
  • a truncated cone-shaped base can be provided with openings that are adjustable in size.
  • the deflector rotor thus forms a rotating viewing element, through which the after-effect with regard to the fineness and selectivity of the finished goods (fine goods) can be influenced several times, where in addition to this improved indulgence effect, an improved precaution is added by the adjustability of the guide vane ring 15.
  • deflector rotor (16, 16 ') is arranged above the guide vane ring (15), there is also the possibility within the scope of the invention of this deflector rotor (16, 16') at the same height as the guide vane ring (15) within it To arrange the vane ring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP85109043A 1984-08-31 1985-07-19 Broyeur à cylindres Withdrawn EP0173065A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8425837U DE8425837U1 (de) 1984-08-31 1984-08-31 Wälzmühle
DE8425837U 1984-08-31

Publications (2)

Publication Number Publication Date
EP0173065A2 true EP0173065A2 (fr) 1986-03-05
EP0173065A3 EP0173065A3 (fr) 1987-08-26

Family

ID=6770311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109043A Withdrawn EP0173065A3 (fr) 1984-08-31 1985-07-19 Broyeur à cylindres

Country Status (6)

Country Link
US (1) US4694994A (fr)
EP (1) EP0173065A3 (fr)
DE (1) DE8425837U1 (fr)
ES (1) ES8700833A1 (fr)
IN (1) IN163400B (fr)
ZA (1) ZA855574B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2599276A1 (fr) * 1986-05-27 1987-12-04 Pfeffer Ag Geb Installation de mouture a courant d'air.
EP0283682A2 (fr) * 1987-03-24 1988-09-28 Mitsubishi Jukogyo Kabushiki Kaisha Broyeur à galets
DE3921986C1 (fr) * 1989-07-04 1990-10-25 Loesche Gmbh, 4000 Duesseldorf, De
US5244157A (en) * 1989-07-04 1993-09-14 Loesche Gmbh Air flow rolling mill
EP0829303A1 (fr) * 1996-09-13 1998-03-18 DEUTZ Aktiengesellschaft Broyeur à anneau et rouleau pour le broyage par pression de matériau granulé
WO1999010101A1 (fr) * 1997-08-22 1999-03-04 Transfield Pty. Ltd. Enlevement (a partir du charbon) d'elements non combustibles, dans des broyeurs
DE19806895C2 (de) * 1998-02-19 2002-10-24 Pfeiffer Ag Geb Verfahren und Vorrichtung zum Optimieren des Mahlbettes von Walzenschüsselmühlen
WO2009016681A2 (fr) 2007-08-02 2009-02-05 Saeco Ipr Limited Support avec une double surface de repos pour des tasses et d'autres récipients dans des machines pour la production de boissons

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8425837U1 (de) * 1984-08-31 1984-11-22 Krupp Polysius Ag, 4720 Beckum Wälzmühle
DE3717976A1 (de) * 1987-05-27 1988-12-08 Krupp Polysius Ag Verfahren und anlage zur zerkleinerung von mahlgut
DE3839419A1 (de) * 1988-11-22 1990-05-23 Krupp Polysius Ag Vorrichtung zur materialzufuehrung zu einem anlagenteil
US5079819A (en) * 1990-01-16 1992-01-14 Parham Robert L Method of repairing one-piece pulverizing roller assembly
US4996757A (en) * 1990-01-16 1991-03-05 Parham Robert L Method of repairing a one-piece roller assembly
US5242123A (en) * 1991-05-20 1993-09-07 Parham Robert L Cast plunger can and spring compressor
DE4323587C2 (de) * 1993-07-14 1996-07-18 Loesche Gmbh Verfahren und Einrichtung zum Zerkleinern von Material unterschiedlicher Körnung
US5873156A (en) * 1993-10-13 1999-02-23 Sure Alloy Steel Corporation Coal pulverizer and method of improving flow therein
US5819947A (en) * 1996-01-29 1998-10-13 Sure Alloy Steel Corporation Classifier cage for rotating mill pulverizers
US6290071B1 (en) * 1999-12-21 2001-09-18 General Steel And Supply Company Air separator system
DE10141414B4 (de) * 2001-08-23 2004-03-04 Loesche Gmbh Wälzmühle, Luftstrom-Wälzmühle, und Verfahren zur Vermahlung von Stoffen mit magnetisierbaren, insbesondere eisenhaltigen Bestandteilen, beispielsweise Schlacken
WO2006024315A1 (fr) * 2004-09-02 2006-03-09 Claudius Peters Technologies Gmbh Procede de traitement d'un siccatif au carbone pour produire des electrodes
DE102009012353C5 (de) * 2009-03-09 2013-08-22 ThyssenKrupp Resource Technologies AG Rollenmühle
DE102009015037B4 (de) * 2009-03-26 2011-03-31 Loesche Gmbh Wälzmühle
JP6570273B2 (ja) * 2015-03-11 2019-09-04 株式会社栗本鐵工所 分級機能付粉砕装置
US10016762B2 (en) * 2015-06-16 2018-07-10 Arvos Raymond Bartlett Snow Llc Vertical bowl mill for producing coarse ground particles
CN106902926B (zh) * 2017-04-26 2019-01-22 郑州大学 一种碾碎式风选机
CN117753515B (zh) * 2024-02-22 2024-04-30 航天氢能新乡气体有限公司 一种煤块的自动磨煤机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1806980A (en) * 1931-05-26 Ptjlvebizeb
FR1223652A (fr) * 1958-02-12 1960-06-20 Babcock & Wilcox France Perfectionnements aux broyeurs
DE2019005A1 (en) * 1970-04-21 1971-11-18 Loesche KG, Hartzerkleinerungs- u. Zementmaschinen KG, 4000 Düsseldorf Gravel mill quartz separator
DE2628241A1 (de) * 1976-06-24 1978-01-05 Pfeiffer Ag Geb Luftstrom-sichter
DE1938772C3 (de) * 1969-07-30 1980-06-12 Krupp Polysius Ag, 4720 Beckum Walzmuhle
DE8425837U1 (de) * 1984-08-31 1984-11-22 Krupp Polysius Ag, 4720 Beckum Wälzmühle
US4597537A (en) * 1982-09-14 1986-07-01 Onoda Cement Company, Ltd. Vertical mill

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1806980A (en) * 1931-05-26 Ptjlvebizeb
FR1223652A (fr) * 1958-02-12 1960-06-20 Babcock & Wilcox France Perfectionnements aux broyeurs
DE1938772C3 (de) * 1969-07-30 1980-06-12 Krupp Polysius Ag, 4720 Beckum Walzmuhle
DE2019005A1 (en) * 1970-04-21 1971-11-18 Loesche KG, Hartzerkleinerungs- u. Zementmaschinen KG, 4000 Düsseldorf Gravel mill quartz separator
DE2628241A1 (de) * 1976-06-24 1978-01-05 Pfeiffer Ag Geb Luftstrom-sichter
US4597537A (en) * 1982-09-14 1986-07-01 Onoda Cement Company, Ltd. Vertical mill
DE8425837U1 (de) * 1984-08-31 1984-11-22 Krupp Polysius Ag, 4720 Beckum Wälzmühle

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2599276A1 (fr) * 1986-05-27 1987-12-04 Pfeffer Ag Geb Installation de mouture a courant d'air.
DE3617746A1 (de) * 1986-05-27 1987-12-10 Pfeiffer Ag Geb Luftstrom-mahlanlage
EP0283682A2 (fr) * 1987-03-24 1988-09-28 Mitsubishi Jukogyo Kabushiki Kaisha Broyeur à galets
EP0283682A3 (en) * 1987-03-24 1989-04-05 Mitsubishi Jukogyo Kabushiki Kaisha Roller mill
DE3921986C1 (fr) * 1989-07-04 1990-10-25 Loesche Gmbh, 4000 Duesseldorf, De
US5244157A (en) * 1989-07-04 1993-09-14 Loesche Gmbh Air flow rolling mill
EP0829303A1 (fr) * 1996-09-13 1998-03-18 DEUTZ Aktiengesellschaft Broyeur à anneau et rouleau pour le broyage par pression de matériau granulé
WO1999010101A1 (fr) * 1997-08-22 1999-03-04 Transfield Pty. Ltd. Enlevement (a partir du charbon) d'elements non combustibles, dans des broyeurs
DE19806895C2 (de) * 1998-02-19 2002-10-24 Pfeiffer Ag Geb Verfahren und Vorrichtung zum Optimieren des Mahlbettes von Walzenschüsselmühlen
WO2009016681A2 (fr) 2007-08-02 2009-02-05 Saeco Ipr Limited Support avec une double surface de repos pour des tasses et d'autres récipients dans des machines pour la production de boissons

Also Published As

Publication number Publication date
US4694994A (en) 1987-09-22
IN163400B (fr) 1988-09-17
ZA855574B (en) 1986-03-26
EP0173065A3 (fr) 1987-08-26
ES8700833A1 (es) 1986-11-16
ES546541A0 (es) 1986-11-16
DE8425837U1 (de) 1984-11-22

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Inventor name: LOHNHERR, LUDGER, ING. GRAD.

Inventor name: EICKHOLT, HUBERT, DIPL.-ING.

Inventor name: HENNE, HEINRICH, DIPL.-ING.

Inventor name: BLASCZYK, GOTTHARDT, DIPL.-ING.