EP0294609B1 - Broyeur à rouleaux - Google Patents

Broyeur à rouleaux Download PDF

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Publication number
EP0294609B1
EP0294609B1 EP88107638A EP88107638A EP0294609B1 EP 0294609 B1 EP0294609 B1 EP 0294609B1 EP 88107638 A EP88107638 A EP 88107638A EP 88107638 A EP88107638 A EP 88107638A EP 0294609 B1 EP0294609 B1 EP 0294609B1
Authority
EP
European Patent Office
Prior art keywords
roller
mill
grinding
casing
carrier
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
EP88107638A
Other languages
German (de)
English (en)
Other versions
EP0294609A3 (en
EP0294609A2 (fr
Inventor
Heinrich Dipl.-Ing. Henne
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 EP0294609A2 publication Critical patent/EP0294609A2/fr
Publication of EP0294609A3 publication Critical patent/EP0294609A3/de
Application granted granted Critical
Publication of EP0294609B1 publication Critical patent/EP0294609B1/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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/007—Mills with rollers pressed against a rotary horizontal disc
    • 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 type required in the preamble of claim 1 is known from EP-A-68 681 or US-A-974,180.
  • AT-B-49 174 discloses a mixing and grinding machine for grinding paints, lacquer, core sand, clay and the like, and for extracting oils and fats from the basic materials.
  • two rollers move on axes, which are guided on the one hand on columns in movable bearings and on the other hand are held in a truss piece.
  • the mixing and rubbing effect is created on the one hand by an eccentrically rotating grinding table and on the other hand by an additional shifting of the rollers to the right and left with each grinding table revolution.
  • roller mills are particularly well suited for the preparation of samples (e.g. laboratory samples), for the grinding of coal, coke, etc., for small furnaces and for other smaller grinding capacities, such as in the chemical industry.
  • the invention is therefore based on the object to provide a roller mill, in particular for smaller throughputs, of the type required in the preamble of claim 1, which is structurally relatively simple but very robust and features a structure that is less prone to failure and can be manufactured at relatively low costs.
  • roller mill according to the invention also referred to as a spring roller mill
  • This roller mill contains a mill housing 1 with a vertical axis 1 a, constructed approximately in the usual way, it being possible for this mill housing 1 to be stiffened on the outside by a type of support frame or support frame construction 2.
  • the roller mill is fixed and anchored with its mill housing 1 and the support frame 2 on a suitable foundation or a corresponding foundation frame 3.
  • a grinding plate 4 Arranged within the mill housing 1 is a grinding plate 4, which has an annular grinding path 5 on its upper side in a conventional manner and is supported on its underside by a rotatingly driven hub 6, which in turn is rotatably fixed to the upper end of the output shaft 7 of a mill drive gear 8 is attached (screwed on), which can be driven in a suitable manner, for example by an electric motor (not shown).
  • the substantially horizontally oriented grinding table 4 is thus driven in rotation during operation of the roller mill via the gear 8 and the hub 6 about the vertical housing axis 1 a, the grinding path 5 being coaxial revolves around the housing axis 1a.
  • two grinding rolls 9, 10, which are of essentially the same and conventional design, roll off and are adapted to the cross-section of the grinding track 5 on their outer circumferential side (cf. FIG. 2).
  • the two grinding rollers 9, 10 are assigned diametrically opposite areas of the grinding track 5.
  • the two grinding rollers 9, 10 are freely rotatable about their own axes 11 and 12 and essentially stationary, but are spring-mounted in the vertical direction relative to the grinding plate 4 by a common roller carrier 13.
  • the feed ground material is fed in a conventional manner centrally via a feed nozzle 14 and finished, sufficiently comminuted ground material can be removed via the outer edge of the grinding plate 4 and that this roller mill - as in solid lines shown - as a pure crushing mill or - as supplemented by a dot-dash line in FIG. 1 - as a roller mill with an immediately constructed (static or dynamic) wind sifter 15, which wind sifter is in pneumatic conveying connection with the outer peripheral region of the grinding plate 4, as is known per se is.
  • the two coaxial grinding rollers 9, 10 are rigidly connected to one another by their axes 11 and 12 and are also rigidly connected to the roller carrier 13.
  • the roller carrier 13 passes through the mill housing 1 diametrically above the grinding table 4, wherein it has a spherical cap-shaped design 16 at its one, first end 13a, with which this first End 13a is mounted in a spherical joint plain bearing shell 17, which in turn is supported by at least one spring assembly, preferably by a plurality of spring assemblies 18 in a bearing housing 19 in the manner of a shock absorber.
  • the bearing housing 19 is expediently attached (for example screwed on) to the outside of the mill housing 1 and vertically adjustable to compensate for wear.
  • the opposite second end 13b of the roller carrier 13 is guided out of the mill housing 1 in a sealed manner and is vertically movable and adjustable and is also preferably resiliently supported on the foundation frame 3 via a pull rod 20.
  • the pull rod 20 is assigned a pressure medium cylinder, preferably a hydraulic cylinder 21, which serves both for the vertical adjustability of the second roller carrier end 13b and as a spring element therefor. It goes without saying that the drawbar can also be adjusted mechanically can be, and it can be associated with a conventional mechanical spring device.
  • this second roller carrier end 13b can be sealed by an elastic seal 23 in the region of the housing leadthrough.
  • the outermost section of the second roller carrier end 13b is - as shown in FIGS. 3 and 4 - spherical cap-shaped (at 13b '), this outermost section likewise being mounted in a second ball-joint slide bearing shell 24 which is provided at the upper end of the pull rod 20 .
  • the roller carrier 13 which is formed separately in this case, is - as can be seen particularly in FIG. 3 - arranged essentially at right angles to the common (essentially horizontal) geometric axis 25 of the two grinding rollers 9, 10.
  • This grinding roller carrier 13 is designed in the region of the vertical housing axis 1a with an approximately frame-like central part 13c in such a way that a central, vertical material passage opening 26 results.
  • both grinding roller axes 11, 12 are rigidly attached to opposite (preferably flattened) outer sides of the frame-like roller carrier middle part 13c, i.e. they can be flange-mounted or directly cast on there.
  • the material passage opening 26 formed by the frame-like central part 13c offers the advantage that material to be ground supplied via the feed nozzle 14 can be supplied exactly in the middle onto the grinding plate (and a distributor plate or the like present there).
  • the two grinding rollers 9, 10 are preferably mounted on their associated axes 11, 12 via roller bearings 27, as is indicated purely schematically in FIG. 3 for the grinding roller 9.
  • These roller bearings 27 preferably have long-term grease lubrication with special roller bearing grease. While lubricating oil is used in the high-performance roller mills described above for various reasons (e.g. because of the relatively high price for special roller bearing grease), the relatively small amount of grease required for the grinding rollers 9, 10 allows the use of the special roller bearing grease, in this case also on the sealing air sealing, which is otherwise customary, can be dispensed with. An easy one Relubrication of the roller bearings 27 is easily possible via a conventional relubrication hole in the axis.
  • FIGS. 5 and 6 While a particularly preferred embodiment of the roller mill according to the invention has been explained with reference to FIGS. 1 to 4, some particularly simple training options for the roller mill will be discussed below with reference to FIGS. 5 and 6 based on the illustration in FIG. For the sake of simplicity, these further exemplary embodiments are illustrated in FIGS. 5 and 6 only in a very simplified manner in the plan, parts which are essentially the same are provided with the same reference numerals as in the previous example, so that their further explanation can be omitted.
  • FIG. 5 initially illustrates only one embodiment variant, in particular for the formation of the roller carrier 30.
  • roller carrier 30 for both grinding rollers 9, 10, which runs at right angles to the geometric grinding roller axis 25.
  • a continuous, common grinding roller axis 31 is provided for both grinding rollers 9, 10, which crosses the roller carrier 30 and is rigidly connected to it at the crossing point 32, preferably welded with the aid of additional insert pieces 33 or screwed.
  • the two ends of this grinding roller carrier can be configured and supported in the same way, as is illustrated and described in particular with reference to FIGS. 3 and 4.
  • the two grinding rollers 9, 10 roll within the mill housing 1 essentially in the same way on the grinding table grinding track 5 as in the first exemplary embodiment.
  • the two grinding rollers 9, 10 are freely rotatably mounted on a continuous, common grinding roller axis 40, which at the same time also forms the roller carrier.
  • This roller support grinding roller axis 40 can then in turn be formed and supported or supported at its outer ends in exactly the same way as is illustrated and described in the first exemplary embodiment and in particular with reference to FIGS. 3 and 4.
  • roller mill With the roller mill according to the invention, adequate damping of the grinding impacts (via grinding rollers, roller carriers and the resilient bearings at their ends) is thus ensured in any case. It can also be provided that the bearing supports for the roller carrier ends are slightly adjusted by a corresponding adjustment device when the level changes due to wear of the grinding rollers on their circumference or on the grinding plate can be what can be achieved for example by spindle devices or the like.
  • FIG. 7 finally shows a variant of the roller mill described with reference to FIGS. 1 to 4. Since this embodiment variant is constructed in the same way in most construction elements, as explained in detail above with reference to FIGS. 1 to 4, the same parts of this exemplary embodiment can be provided with the same reference symbols in FIG. 7, so that they are not described again in detail .
  • the roller mill according to FIG. 7 again contains a mill housing 1 with a vertical axis 1a, a support frame 2 firmly mounted on a foundation frame 3, the grinding table 4 driven in the same way, and grinding rollers 9, 10 rolling thereon, with rigidly connected axes 11, 12 and also a rigidly connected roller carrier 13 '.
  • This roller carrier 13 ' is essentially of the same design as in the first example according to FIGS. 1 to 4, but in the present case is guided out of the mill housing 1 in a sealed manner at its two opposite ends 13a and 13b.
  • the first roller carrier end 13'a - in a modification of the first example - at the upper end 28a of a simple support rod 28 articulated, the lower end 28b of which is articulated on the mill foundation (foundation frame 3).
  • the joints at the upper end 28a and at the lower end 28b of this support rod 28 can be designed as simple joints, for example in the form of claw joints or the like with joint pins.
  • the second roller carrier end 13'b is preferably in turn formed and supported in exactly the same manner as was explained in detail above in particular with reference to FIGS. 3 and 4, ie this second roller carrier end 13'b is due to the spherical bushing 22 led out of the mill housing 1 and reliably sealed in the area of this housing bushing by the elastic seal 23.
  • Such an elastic seal 23 can also be provided, if necessary, on the opposite side of the housing for the sealed passage of the first roller support end 13'a.
  • This embodiment variant according to FIG. 7 can also be used to construct somewhat larger roller mill designs in a particularly advantageous manner in order to introduce the forces occurring from both ends of the roller carrier 13 'directly into the foundation (foundation frame 3). While here the support rod 28 can be made essentially rigid (possibly mechanically somewhat adjustable), the second roller carrier end 13'b is in turn supported by the vertically spring-movable, adjustable pull rod 20.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Claims (15)

  1. Broyeur à meules, comprenant
    a) une enveloppe (1) dont l'axe (1a) est vertical,
    b) une table de broyage (4) disposée à l'intérieur de l'enveloppe du broyeur, comportant un chemin annulaire de broyage (5), rotative autour de l'axe vertical de l'enveloppe et supportée du côté inférieur par un moyeu (6) pouvant être entraîné en rotation,
    c) deux meules (9, 10) diamétralement opposées, roulant sur la table de broyage (4), librement rotatives autour de leur axe propre (11, 12, 31, 40) et supportées par un porte-meules (13, 13') de manière à occuper une position sensiblement fixe, mais toutefois à être mobiles verticalement de manière élastique par rapport à la table de broyage (4),
    d) les deux meules (9, 10) orientées coaxialement l'une par rapport à l'autre étant reliées de manière rigide l'une à l'autre ainsi qu'au porte-meules (13, 13') par leur axe (11, 12, 31, 40),
       caractérisé par les particularités suivantes :
    e) le porte-meules (13, 13'), qui est disposé diamétralement en travers de l'enveloppe (1) du broyeur au-dessus de la table (4) de broyage, ressort à au moins une extrémité (13b, 13'b) de l'enveloppe (1) du broyeur en passant par un joint d'étanchéïté et en étant supporté de manière à être mobile et déplaçable verticalement.
  2. Broyeur à meules selon la revendication 1, caractérisé en ce que la première extrémité (13a) du porte-meules (13, 30, 40) est montée par articulation et élastiquement sur l'enveloppe (1) du broyeur et sa seconde extrémité (13b) diamétralement opposée ressort de l'enveloppe du broyeur et prend appui de manière étanche.
  3. Broyeur à meules selon la revendication 2, caractérisé en ce que la première extrémité (13a) du porte-meules (13) est conformée en calotte sphérique et montée dans un coussinet de palier d'articulation à rotule (17) qui prend appui de son côté dans un logement de palier (19) par l'entremise d'au moins un bloc-ressort (18).
  4. Broyeur à meules selon la revendication 1, caractérisé en ce qu'au moins l'une (13b, 13'b) des extrémités du porte-meules (13, 13') ressort de l'enveloppe (1) du broyeur en passant par une traversée bombée (22) et est étanchéïfiée dans la région de cette traversée de l'enveloppe par un joint élastique (23).
  5. Broyeur à meules selon la revendication 4, caractérisé en ce que la partie extrême de l'extrémité (13b, 13'b) du porte-meules qui ressort de l'enveloppe (1) du broyeur prend appui par l'intermédiaire d'un coussinet d'articulation à rotule (13b', 24) sur l'extrémité supérieure d'un tirant élastique réglable (20) dont l'extrémité inférieure peut se fixer sur la fondation (3) du broyeur.
  6. Broyeur à meules selon la revendication 5, caractérisé en ce que le tirant (20) est réglable mécaniquement.
  7. Broyeur à meules selon la revendication 5, caractérisé en ce que le tirant (20) est combiné avec un cylindre (21) à fluide sous pression qui constitue l'élément élastique et de réglage.
  8. Broyeur à meules selon la revendication 1, caractérisé en ce que les deux meules (9, 10) sont montées librement rotatives sur un axe continu commun (40) qui forme également le porte-meules.
  9. Broyeur à meules selon la revendication 1, caractérisé en ce que le porte-meules (13, 30) réalisé individuellement est orienté perpendiculairement à l'axe (25) des meules.
  10. Broyeur à meules selon la revendication 9, caractérisé en ce qu'un axe commun continu (31), qui est prévu pour les deux meules (9, 10), croise le porte-meules (30) et est solidarisé avec ce dernier au point de croisement (32).
  11. Broyeur à meules selon la revendication 9, caractérisé en ce que le porte-meules (13) est conformé en cadre dans la région de l'axe vertical (1a) de l'enveloppe et présente une ouverture centrale verticale (26) de passage de la matière et en ce que un axe court, en forme de bout d'arbre (11, 12) est prévu pour chaque meule (9, 10), les deux axes (11, 12) des meules étant solidarisés avec les côtés extérieurs opposés de la partie médiane (13c) en forme de cadre du porte-meules.
  12. Broyeur à meules selon la revendication 1, caractérisé en ce que les meules (9, 10) sont montées sur leur axe au moyen de roulements à rouleaux (27) et les roulements à rouleaux possèdent une lubrification de longue durée par une grasse spéciale à roulements.
  13. Broyeur à meules selon la revendication 1, caractérisé en ce que le moyeu (6) de la table de broyage est monté solidaire en rotation sur l'extrémité supérieure de l'arbre de sortie (7) d'une transmission (8) de la commande du broyeur.
  14. Broyeur à meules selon la revendication 4, caractérisé en ce que les deux extrémités opposées (13'a, 13'b) du porte-meules (13') ressortent de manière étanche de l'enveloppe (1) du broyeur, la première extrémité (13'a) étant supportée à articulation à l'extrémité supérieure (28a) d'une simple tringle d'appui (28) dont l'extrémité inférieure (28b) prend appui par articulation sur la fondation (3) du broyeur, tandis que la seconde extrémité (13'b) du porte-meules ressort de l'enveloppe du broyeur par une traversée bombée (22) de l'enveloppe et par le joint élastique d'étanchéïté (23).
  15. Broyeur à meules selon la revendication 1, caractérisé en ce que la circonférence extérieure de la table de broyage (4) est entourée d'une admission annulaire (29) d'air de séparation et de transport qui est raccordée à une canalisation (29a) d'admission d'air et en ce qu'un séparateur à air (15) est monté directement sur l'enveloppe (1) du broyeur et est en communication pneumatique de transfert avec l'admission d'air (29).
EP88107638A 1987-06-04 1988-05-11 Broyeur à rouleaux Expired - Lifetime EP0294609B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3718781 1987-06-04
DE19873718781 DE3718781A1 (de) 1987-06-04 1987-06-04 Rollenmuehle

Publications (3)

Publication Number Publication Date
EP0294609A2 EP0294609A2 (fr) 1988-12-14
EP0294609A3 EP0294609A3 (en) 1989-11-29
EP0294609B1 true EP0294609B1 (fr) 1992-01-02

Family

ID=6329082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107638A Expired - Lifetime EP0294609B1 (fr) 1987-06-04 1988-05-11 Broyeur à rouleaux

Country Status (3)

Country Link
US (1) US4909450A (fr)
EP (1) EP0294609B1 (fr)
DE (2) DE3718781A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039021A (en) * 1990-04-23 1991-08-13 Foster Wheeler Energy Corporation Pulverizing mill having external loading arm mehcanism
DE4209458A1 (de) * 1992-03-24 1993-09-30 Krupp Polysius Ag Wälzmühle
DE4209459A1 (de) * 1992-03-24 1993-09-30 Krupp Polysius Ag Wälzmühle
US6213415B1 (en) * 1999-09-13 2001-04-10 W.R. Grace & Co.-Conn. Process for improving grinding of cement clinker in mills employing rollers
WO2001054819A1 (fr) * 2000-01-28 2001-08-02 Pacific Edge Holdings Pty Ltd Procede pour valoriser des materiaux a base de charbon de rang bas
GB2420992B (en) * 2004-04-19 2008-05-21 William Graham Bell Industrial apparatus
DE102004042316B4 (de) * 2004-09-01 2008-11-20 Siemens Ag Spindellagervorrichtung
DE102008010652B3 (de) * 2008-02-22 2009-11-05 Polysius Ag Kraftübertragungssystem und Rollenmühle
WO2010055437A1 (fr) * 2008-11-13 2010-05-20 Flsmidth A/S Broyeur à rouleaux pour le broyage de matière particulaire
CN102271815B (zh) * 2009-01-30 2013-10-30 Fl史密斯公司 一种辊磨机
DE102011014592A1 (de) * 2011-03-21 2012-09-27 Loesche Gmbh Wälzmühle
US10758912B1 (en) * 2019-04-11 2020-09-01 Gene P. Guthmiller Material processing system

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Publication number Priority date Publication date Assignee Title
US522982A (en) * 1894-07-17 aordon
DE233990C (fr) *
US563145A (en) * 1896-06-30 duffield
DE134384C (fr) * 1901-04-23 1902-08-28
US974180A (en) * 1909-07-13 1910-11-01 Raymond C Penfield Dry-pan.
AT49174B (de) * 1910-03-07 1911-07-25 Vulkan Koeln Ag Misch- und Verreibungsmaschine.
FR430377A (fr) * 1910-06-11 1911-10-14 Michel David Malaxeur à mortier
GB1507010A (en) * 1976-07-27 1978-04-12 Smidth & Co As F L Roller mill
US4072276A (en) * 1977-04-07 1978-02-07 Foster Wheeler Energy Corporation Pulverizer with caster roller assembly
GB2100617A (en) * 1981-06-26 1983-01-06 Smidth & Co As F L Edge-runner mill
GB2118457B (en) * 1982-04-13 1985-05-22 Smidth & Co As F L Edge runner mills
CH658801A5 (de) * 1982-10-29 1986-12-15 Maag Zahnraeder & Maschinen Ag Walzenschuesselmuehle.
GB2193115A (en) * 1986-08-01 1988-02-03 Smidth & Co As F L Roller mill

Also Published As

Publication number Publication date
US4909450A (en) 1990-03-20
DE3867320D1 (de) 1992-02-13
EP0294609A3 (en) 1989-11-29
DE3718781A1 (de) 1988-12-15
EP0294609A2 (fr) 1988-12-14

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