[go: up one dir, main page]

EP0294609A2 - Broyeur à rouleaux - Google Patents

Broyeur à rouleaux Download PDF

Info

Publication number
EP0294609A2
EP0294609A2 EP88107638A EP88107638A EP0294609A2 EP 0294609 A2 EP0294609 A2 EP 0294609A2 EP 88107638 A EP88107638 A EP 88107638A EP 88107638 A EP88107638 A EP 88107638A EP 0294609 A2 EP0294609 A2 EP 0294609A2
Authority
EP
European Patent Office
Prior art keywords
roller
grinding
mill
housing
axis
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
EP88107638A
Other languages
German (de)
English (en)
Other versions
EP0294609B1 (fr
EP0294609A3 (en
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

Links

Images

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 patent claim 1.
  • Roller mills of the required type are sufficiently known from practice in various embodiments. These roller mills are usually designed with two or three rollers or pairs of rollers. They are generally used for relatively high throughput rates, in particular for the comminution of coal (in coal grinding plants) and cement materials (for the production of raw cement flour or for the fine comminution of cement clinker).
  • the grinding rollers can be held individually and independently of one another by one or more roller carriers, as is also known, inter alia, from W. Duda, "Cement-Data-Book", 3rd edition, volume 1, 1985, p .228 to 243.
  • relatively large forces occur during the grinding work, which is why a relatively high level of design effort must be used solely for the design and mounting of the individual grinding rolls and for the roller carrier (s) and the design and mounting of the grinding table.
  • the invention has for its object to provide a roller mill of the type required in the preamble of claim 1, which is characterized by a relatively small throughput by a structurally relatively simple, but very robust and less prone to failure structure and thereby can be manufactured at a relatively low cost.
  • the two grinding rollers which are aligned coaxially and with a correspondingly large axial distance from one another, are rigidly connected to one another by their axis and are also rigidly connected to the roller carrier.
  • the grinding force of the grinding rollers in relation to the grinding path of the grinding plate can be diametrically through from the outside through the mill housing crossing roller carriers are applied.
  • This roller carrier is articulated and resiliently mounted on the mill housing at its first end and is guided out of the mill housing in a sealed manner at its opposite second end and is supported here in a vertically adjustable manner.
  • the mode of operation can in principle correspond to that of the known (large) roller mills; this also applies in principle to the rest of the general structure, according to which the actual Lichen roller mill still a static or dynamic air classifier can be constructed in a conventional manner.
  • 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 aligned 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 co rotates axially to 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 relative to the grinding plate 4 in the vertical direction 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 area of the housing bushing.
  • the outermost section of the second roller carrier end 13b is - as shown in FIGS. 3 and 4 - formed in the shape of a spherical cap (at 13b '), this outermost section also 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 one Multiple relubrication of the roller bearing 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.
  • FIG. 5 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 with the aid of additional insert pieces 33 is welded 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 plate 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 has been 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.
  • a suitable (static or dynamic) wind classifier 15 can be constructed directly on the mill housing 1.
  • FIG. 7 in which the winch sifter 15 is shown in solid lines.
  • the outer circumference of the grinding plate 4 is then appropriately surrounded by an annular view and transport air supply 29, to which an air line (29a) leading this view air and transport air (arrows 29b) is connected in a manner known per se.
  • the air classifier 15 is in a pneumatic conveying connection with the air supply 29 in the outer peripheral region of the grinding plate 4, as is indicated by the dashed arrows 29b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
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
DE19873718781 DE3718781A1 (de) 1987-06-04 1987-06-04 Rollenmuehle
DE3718781 1987-06-04

Publications (3)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009103762A1 (fr) * 2008-02-22 2009-08-27 Polysius Ag Système de transmission de force avec un cylindre hydraulique et un palier de pression
WO2010055437A1 (fr) * 2008-11-13 2010-05-20 Flsmidth A/S Broyeur à rouleaux pour le broyage de matière particulaire
WO2012126590A2 (fr) 2011-03-21 2012-09-27 Loesche Gmbh Broyeur à galets

Families Citing this family (9)

* 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
DE4209459A1 (de) * 1992-03-24 1993-09-30 Krupp Polysius Ag Wälzmühle
DE4209458A1 (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
US20110272512A1 (en) * 2009-01-30 2011-11-10 Flsmidth A/S Roller Mill
US10758912B1 (en) * 2019-04-11 2020-09-01 Gene P. Guthmiller Material processing system

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US522982A (en) * 1894-07-17 aordon
US563145A (en) * 1896-06-30 duffield
DE233990C (fr) *
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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009103762A1 (fr) * 2008-02-22 2009-08-27 Polysius Ag Système de transmission de force avec un cylindre hydraulique et un palier de pression
US8398008B2 (en) 2008-02-22 2013-03-19 Polysius Ag Force transfer system comprising a hydraulic cylinder and a thrust bearing
WO2010055437A1 (fr) * 2008-11-13 2010-05-20 Flsmidth A/S Broyeur à rouleaux pour le broyage de matière particulaire
WO2012126590A2 (fr) 2011-03-21 2012-09-27 Loesche Gmbh Broyeur à galets
DE102011014592A1 (de) * 2011-03-21 2012-09-27 Loesche Gmbh Wälzmühle
WO2012126590A3 (fr) * 2011-03-21 2012-12-06 Loesche Gmbh Broyeur à galets
US8925844B2 (en) 2011-03-21 2015-01-06 Loesche Gmbh Roller mill

Also Published As

Publication number Publication date
DE3718781A1 (de) 1988-12-15
EP0294609B1 (fr) 1992-01-02
DE3867320D1 (de) 1992-02-13
US4909450A (en) 1990-03-20
EP0294609A3 (en) 1989-11-29

Similar Documents

Publication Publication Date Title
CH627951A5 (de) Walzenstuhl fuer die schrotung und vermahlung von getreide.
DE3145655C1 (de) Schuesselmuehlengetriebe
DE2721706A1 (de) Kardangelenk und gelenkkreuz dafuer
EP0294609B1 (fr) Broyeur à rouleaux
EP2125228B1 (fr) Broyeur à rouleaux
DE2730166C3 (de) Walzenstuhl für die Vermahlung und Schrotung von Getreide
DE2842816A1 (de) Siebeinrichtung
DE2530401C2 (fr)
DE3815218A1 (de) Luftstrom-mahlanlage
DE3221011C2 (fr)
DE3520937A1 (de) Waelzmuehle
EP0658379B1 (fr) Broyeur à rouleau
DE102013017134A1 (de) Vorrichtung zum Bearbeiten von schüttfähigem Aufgabegut
DE3323718C2 (fr)
DE3409710A1 (de) Waelzmuehle
DE1163121B (de) Kugelquetschmuehle
DE8805656U1 (de) Breitbandwalzwerk mit Druckelementen
EP1138391A1 (fr) Dispositif de broyage, pulvérisation et dispersion de matière à broyer fluide
EP0256147A1 (fr) Broyeur à disques
DE6947529U (de) Fliehkraftringrollenmuehle.
EP0677329A1 (fr) Broyeur annulaire à boulets
DE3049080A1 (de) Presswalze, deren durchbiegung einstellbar ist
DE106932C (fr)
DE102005025711B4 (de) Vorrichtung zum Anstellen der Vertikalwalzen eines Stauchgerüstes
DE102022121387A1 (de) Hochdruckwalzenpresse mit Seitenwandanordnung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT

RHK1 Main classification (correction)

Ipc: B02C 15/14

17P Request for examination filed

Effective date: 19900116

17Q First examination report despatched

Effective date: 19910611

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19920102

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19920102

Ref country code: FR

Effective date: 19920102

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3867320

Country of ref document: DE

Date of ref document: 19920213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920511

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19920511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19930202