EP0329995A2 - Broyeur à cylindres - Google Patents

Broyeur à cylindres Download PDF

Info

Publication number
EP0329995A2
EP0329995A2 EP89101836A EP89101836A EP0329995A2 EP 0329995 A2 EP0329995 A2 EP 0329995A2 EP 89101836 A EP89101836 A EP 89101836A EP 89101836 A EP89101836 A EP 89101836A EP 0329995 A2 EP0329995 A2 EP 0329995A2
Authority
EP
European Patent Office
Prior art keywords
sintered metal
plate
roller mill
grinding gap
roller
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Withdrawn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
EP89101836A
Other languages
German (de)
English (en)
Other versions
EP0329995A3 (fr
Inventor
Heinz Dipl.-Ing. Grachtrup
Otto Dipl.-Ing. Heinemann
Helmut Krumme
Helmut Dipl.-Ing. Lücke
Werner Dipl.-Ing. Schössler
Karl Dipl.-Ing. Von Greiffenstern
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 EP0329995A2 publication Critical patent/EP0329995A2/fr
Publication of EP0329995A3 publication Critical patent/EP0329995A3/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Withdrawn legal-status Critical Current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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/283—Lateral sealing shields

Definitions

  • the invention relates to a roller mill, in particular for pressure comminution of regrind, according to the preamble of claim 1.
  • the regrind to be comminuted under high pressure in the roller gap is fed to this grinding gap from above with the aid of a feed chute.
  • the generally good cross-section of the feed chute with two shaft end walls assigned to the two opposite roller end faces ensures that the grinding gap formed by the grinding rollers is covered as close as possible on the end face.
  • each shaft end wall carries a detachably fastened support plate on which a plate-shaped wear part made of suitable wear material, in particular sintered metal, is provided on the end face covering the gusset area of the grinding gap, so that there is a kind of wear-resistant armor in it Gusset areas results.
  • a plate-shaped wear part made of suitable wear material in particular sintered metal
  • the invention is based on the object, in particular in a roller mill to design the manhole with its end walls and the carrier plates carried by it with the plate-shaped wearing parts so that, with a relatively simple construction, a quick and cost-saving possibility of replacement plate-shaped wearing parts and an extremely reliable attachment of these wearing parts to the associated carrier plates is guaranteed.
  • the individual wearing parts are no longer formed by large-area sintered metal plates, as in the known designs described above, but by a large number of small-area sintered metal plates, which are attached to one another in a mosaic-like manner and which are individually detachably screwed to the associated carrier plate. Since each of these small sintered metal platelets forms only a relatively small contact surface, they can be attached to the carrier plate extremely reliably by the associated fastening screw. If only a part of the total area formed by all sintered metal plates on a carrier plate is worn out to such an extent that an exchange is necessary, then only the largely or completely worn individual sintered metal plates need to be replaced, while the remaining sintered metal plates are replaced Carrier plate can remain in place. Such an exchange or replacement of worn sintered metal platelets is therefore extremely material-saving and therefore cost-saving.
  • the individual sintered metal plates can be exchanged extremely easily and quickly using the associated fastening screws.
  • roller mill for example the housing, the roller bearing, the drive of the rollers, etc.
  • the roller mill illustrated and described below should in particular be one in which pressure reduction of regrind, in particular of relatively brittle regrind, which is known per se, can be carried out.
  • the roller mill contains two rollers, which are only indicated by dash-dotted lines, namely a so-called loose roller 1 and a so-called fixed roller 2, which rotate in opposite directions according to the directional arrows 1a and 2a.
  • These two rollers 1, 2 form a grinding gap 3 in the area between themselves and their respective upper lateral surfaces.
  • the roller mill contains a feed chute 4 which feeds the regrind to be comminuted to the grinding gap 3 from above and which has two spaced-apart and essentially parallel to the roller axes 1b and 2b has longitudinal walls 5 and 6 as well as two end walls 7 and 8 running approximately at right angles thereto, which are designed for the frontal covering (sealing) of the grinding gap 3 and are assigned to the roller end faces (cf. roller end faces 1c and 1d in FIG. 2).
  • a feed chute 4 which feeds the regrind to be comminuted to the grinding gap 3 from above and which has two spaced-apart and essentially parallel to the roller axes 1b and 2b has longitudinal walls 5 and 6 as well as two end walls 7 and 8 running approximately at right angles thereto, which are designed for the frontal covering (sealing) of the grinding gap 3 and are assigned to the roller end faces (cf. roller end faces 1c and 1d in FIG. 2).
  • each shaft end wall 7, 8 is constructed in the same way, whereby these two end walls - in adaptation to the loose roller side and fixed roller side - can be designed as mirror images of one another.
  • Each shaft end wall 7, 8, however, has a similar carrier plate 9, releasably attached to it, on the lower end portion of which a plate-shaped wear part 10 covering the gusset area 3a of the grinding gap 3 is provided.
  • each wear part 10 is essentially formed by a multiplicity of small-area sintered metal plates 11, which are placed close together in a mosaic-like manner. These sintered metal plates 11 all have a rectangular plan or a rectangular surface pointing towards the end faces of the rolls. These sintered metal plates 11 are arranged in a form-fitting manner in a recess 12 of the carrier plate 9 in such a way that they form a flat, tightly closed Form cover surface 11a for the grinding gap gusset region 3a, this cover surface 11a lying essentially flush with the side surfaces 9a of the carrier plate 9 surrounding it.
  • a fastening screw 13 is fastened to the rear side 11b of each sintered metal plate 11 facing away from the grinding gap gusset area 3a or the cover surface 11a, by means of which each sintered metal plate 11 is detachably (individually) connected to the carrier plate 9.
  • the fastening screw 13 is soldered flat with its screw head 13a to the rear 11b of the associated sintered metal plate 11 in such a way that the threaded shaft 13b of the fastening screw 13 projects from the rear side of the plate 11b approximately at right angles.
  • each fastening screw 13 engages through an associated, suitable hole 14 in the carrier plate 9 so far that a fastening nut 15 can be screwed onto the threaded shaft 13b on the rear side of the carrier plate 9 in order to reliably but firmly secure the associated sintered metal plate 11 to be detachably fastened to the carrier plate 9 in its recess 12, which can be seen particularly well from FIGS. 3 and 4.
  • each plug member is height-adjustable by means of adjusting screws 17 and by means of fastening screws 18 (double arrow 19) on the associated shaft end wall 7, 8 or an associated, separate end wall part 7a or 8a.
  • each end wall part 7a or 8a on its outside has a claw-like holder 20 firmly connected to it, in which an approximately perpendicular elongated hole or an approximately vertically extending slot 21 is incorporated, through which the fastening screw 18 extends so that it moves in the direction thereof the double arrow 19 can be moved.
  • the adjusting screws 17 can also be supported on the claw-like holder 20 in such a way that when these adjusting screws 17 are turned, a sensitive, reliable, approximately vertically directed height adjustment of the plug elements 16 together with the carrier plates 9 attached thereto can be achieved in the direction of the double arrow 19, as a result of which - as will be explained in more detail below - the carrier plates 9 with the sintered metal plates 11 can be positioned relative to the end faces of the rollers.
  • the lower end 16a is each — in this case U-shaped carrier-like design Plug member 16 is inserted into a sheath-like plug pocket 22 provided in the associated shaft end wall 7, 8 or its end wall part 7a or 8a and - as will be explained - guided in the direction of the double arrow 19 so as to be slidable.
  • the plug pocket 22 is formed by a channel-shaped and approximately U-shaped recess in cross section (see FIG.
  • this plug pocket 22 is located at the lower end of the end wall parts 7a and 8a, whereby these lower ends can be integral parts of these end wall parts 7a, 8a.
  • the carrier plate 9 with the sintered metal The lower end 16a of the plug element 16, which carries the plate 11, tapers in a wedge shape as shown in FIGS. 2 and 3 in the direction of the associated end face of the roller (1c or 1d in FIG. 2). At the same wedge angle (angle ⁇ in FIG. 2) as the lower connector organ end 16a, the associated connector pockets 22 also taper in a wedge shape in the direction of the associated roller end faces.
  • a rear cover plate 22a of each plug pocket 22 extends in a wedge-shaped manner in the manner mentioned, while each lower connector end 16a with its lower U-leg ends 16a 'tapers downwards in the manner mentioned and thereby slidably moves on the rear cover plate 22a of the associated one Support plug pocket 22, this cover plate 22a then each form a type of guide plate for the lower connector organ ends 16a and their U-leg ends 16a '. Accordingly, if the connector elements 16 are adjusted in the direction of the double arrow 19, the carrier plate 9 with the sintered metal plates 11 attached to it can be moved against the associated end faces of the rollers 1, 2 and vice versa by a downward movement of the connector elements 16.
  • each connector element 16 and in particular the sintered metal plates 11 carried by it and the carrier plate 9 can be extremely sensitive to the associated end faces of the rotating ones Rolls are set, the distance between the cover surface 11a of the sintered metal plates 11 to the roll end faces should be such that the grinding gap cover formed on the one hand does not rub against the roll end faces, but on the other hand does not form too large a gap to the roll end faces (in order to maintain the desired sealing effect).

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP89101836A 1988-02-26 1989-02-02 Broyeur à cylindres Withdrawn EP0329995A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3806159A DE3806159A1 (de) 1988-02-26 1988-02-26 Walzenmuehle
DE3806159 1988-02-26

Publications (2)

Publication Number Publication Date
EP0329995A2 true EP0329995A2 (fr) 1989-08-30
EP0329995A3 EP0329995A3 (fr) 1990-03-28

Family

ID=6348285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89101836A Withdrawn EP0329995A3 (fr) 1988-02-26 1989-02-02 Broyeur à cylindres

Country Status (3)

Country Link
US (1) US4915311A (fr)
EP (1) EP0329995A3 (fr)
DE (1) DE3806159A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060255197A1 (en) * 2005-05-13 2006-11-16 Mcivor Robert E End closures
WO2014093280A1 (fr) * 2012-12-12 2014-06-19 Flsmidth A/S Dispositif pour déchiquetage de matériau
AU2013396239A1 (en) * 2013-06-28 2016-01-21 Flsmidth A/S Wear apparatus for grinding rolls and methods thereof
DE102014102989A1 (de) * 2014-03-06 2015-09-10 Thyssenkrupp Ag Rollenpresse
DE102018113440A1 (de) * 2018-06-06 2019-12-12 Maschinenfabrik Köppern Gmbh & Co. Kg Walzenpresse
CN114887710A (zh) * 2022-05-12 2022-08-12 成都利君实业股份有限公司 一种耐磨挡板及其加工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795663A (en) * 1928-04-02 1931-03-10 Mcgregor Alexander Grant Crushing roll
US3332630A (en) * 1963-06-21 1967-07-25 Verdier Andre Louis Roll-equipped machines, in particular grinders and calenders
DE3635762A1 (de) * 1986-10-21 1988-04-28 Krupp Polysius Ag Walzenmuehle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1702618U (de) * 1955-01-07 1955-07-14 Voegele Ag J Dichtungsbacken fuer walzwerke zur verreibung von farb- und aehnlichen pasten.
CH624313A5 (fr) * 1977-06-24 1981-07-31 Buehler Ag Geb
DE3705051A1 (de) * 1987-02-18 1988-09-01 Kloeckner Humboldt Deutz Ag Walzwerk, insbesondere walzenpresse oder walzenmuehle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795663A (en) * 1928-04-02 1931-03-10 Mcgregor Alexander Grant Crushing roll
US3332630A (en) * 1963-06-21 1967-07-25 Verdier Andre Louis Roll-equipped machines, in particular grinders and calenders
DE3635762A1 (de) * 1986-10-21 1988-04-28 Krupp Polysius Ag Walzenmuehle

Also Published As

Publication number Publication date
EP0329995A3 (fr) 1990-03-28
DE3806159A1 (de) 1989-09-07
US4915311A (en) 1990-04-10

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