EP0386520B1 - Gutbettwalzenmühle - Google Patents

Gutbettwalzenmühle Download PDF

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Publication number
EP0386520B1
EP0386520B1 EP90103272A EP90103272A EP0386520B1 EP 0386520 B1 EP0386520 B1 EP 0386520B1 EP 90103272 A EP90103272 A EP 90103272A EP 90103272 A EP90103272 A EP 90103272A EP 0386520 B1 EP0386520 B1 EP 0386520B1
Authority
EP
European Patent Office
Prior art keywords
walls
material bed
roll
guide walls
vertical
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
EP90103272A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0386520A3 (de
EP0386520A2 (de
Inventor
Norbert Dipl.-Ing. Patzelt
Gotthardt Dipl.-Ing. Blasczyk
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
Priority to AT90103272T priority Critical patent/ATE93165T1/de
Publication of EP0386520A2 publication Critical patent/EP0386520A2/de
Publication of EP0386520A3 publication Critical patent/EP0386520A3/de
Application granted granted Critical
Publication of EP0386520B1 publication Critical patent/EP0386520B1/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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/286—Feeding devices

Definitions

  • a feed hopper for non-generic egg-shaped briquette presses is known.
  • this feed hopper two movable slides are provided opposite one another, the spacing of which can be adjusted simultaneously and parallel to one another with the aid of rack and pinion drives.
  • the flow rate of the - generally soft - briquette mass should be able to be regulated quickly. Little can be found in this publication about the more precise design of the associated egg-shaped briquette presses.
  • a material bed roller mill of the type required in the preamble of claim 1 is, for example, from DE-A-35 35 406 known.
  • two opposing, slide-like covers are provided, which can be shifted in a straight line against each other in order to change the material feed width and / or the height of the material column on the rollers can.
  • These slide-like covers give the filling shaft a funnel shape at its lower end with an outlet opening that can be changed in cross section.
  • the invention has for its object to improve a material bed roller mill of the type required in the preamble of claim 1 in such a way that, with a relatively simple structural design, the pressure which is established by the mill column above the rollers can be used as much as possible for material bed comminution even with fluctuating supply of mill material .
  • guide walls are arranged vertically and, while maintaining their vertical position transversely to the vertical central plane of the material bed roller mill, and optionally also individually and therefore independently of one another.
  • the regrind flow fed to the nip is laterally so through the adjustable, vertical guide walls limited that a minimum height of the regrind column that is formed can be maintained both with smaller and with larger amounts of regrind. Since the adjustable guide walls retain their vertical position even with a transverse adjustment, the regrind pressure, which is formed by the regrind column above the rollers, can be fully utilized for comminution of the crop bed in the area of the roller gap.
  • the regrind column laterally delimited by the guide walls is aligned symmetrically to the vertical center plane of the material bed roller mill. This is generally expedient if the drive motors of the two grinding rollers have the same power consumption due to a corresponding composition of the material to be ground.
  • the regrind is of different origin and / or has a very different grain size (if, for example, uncrushed fresh material and recycled semolina are fed together to the filling chute), it can happen that the two grinding rollers are loaded to different extents when the regrind column is fed symmetrically to the nip , so that the drive motors of the two grinding rollers have a different power consumption.
  • the regrind column can then, for example, by transverse adjustment of only one guide wall asymmetrical to the vertical center plane of the roller mill be set so that the power consumption of the drive motors of both rollers is balanced again.
  • FIGS. 1, 2 and 3 each show schematically held, largely similar cross-sectional views through a material bed roller mill according to the invention, in which three figures of the drawing. only vertical guide walls of the hopper each occupy different positions.
  • the material bed roller mill contains two rollers 1, 2 which are arranged next to one another and are pressed against one another with high grinding force, of which the roller 1 is designed as a fixed roller and the roller 2 as a loose roller.
  • the loose roller 2 is movably mounted in the direction of the double arrow 3 and thus in the direction of the fixed roller 1, as is known per se. Both rollers 1, 2 are preferably driven against each other by a separate drive motor, which is not illustrated in detail here.
  • the two vertical guide walls 7a and 7b opposite each other on both sides of the vertical center plane 8 extend parallel to the roller axes 1a, 2a and essentially over the entire axial length (perpendicular to the plane of the drawing of FIGS. 1-3) of the rollers 1 and 2.
  • Both guide walls 7a, 7b can be adjusted jointly or individually and independently of one another in the transverse direction to the vertical central plane 8, ie in the direction of the double arrows 9a, 9b, depending on requirements and design. In this way, a more or less wide symmetrical regrind column 6 or 6a (FIGS. 1 and 2) or asymmetrical regrind column 6b (FIG.
  • the millbase column 6, 6a, 6b is always laterally delimited by vertically running guide walls 7a, 7b, in order thereby to utilize the full pressure generated by the millbase column above the rollers 1, 2 for comminution of the material bed.
  • the height H (FIG.
  • each of the two vertical guide walls 7a, 7b is arranged directly above an associated roller 1 or 2.
  • the lower longitudinal edge 7a 'or 7b' of each guide wall 7a or 7b has a substantially constant minimum distance a from the outer circumferential side 1b, 2b of the associated roller.
  • the filling chute 5 has a chute base body 10, which in the lower, vertical chute section 5a has two stationary chute walls 11a, 11b, which are spaced apart on both sides of the vertical central plane 8 and run parallel to the roller axes 1a, 2a , between which the two vertical guide walls 7a, 7b are arranged so as to be transverse (arrows 9a, 9b).
  • These two stationary shaft walls 11a, 11b also end at a short distance (approximately distance a in FIG. 1) above the outer circumferential side 1b or 2b of the associated roller 1 or 2.
  • transverse distance between these two stationary shaft walls 11a, 11b is so great dimensioned such that the guide walls 7a, 7b, which can move transversely between them, can be adjusted to a maximum width B of the millbase column (approximately millbase column 6 in FIG. 1).
  • the shaft base body 10 also has a funnel-shaped extension in the area of the upper ends 7a ′′, 7b ′′ of the vertical guide walls 7a, 7b — viewed in cross section of the roller mill (cf. representations in FIGS. 1-3), which essentially consists of two preferably equally large, symmetrical to the vertical center plane 8 downward (converging) inclined walls 12a and 12b is formed. These two inclined walls 12a, 12b connect approximately to the upper ends of the stationary shaft walls 11a, 11b. Above the funnel-shaped extension formed in this way, the manhole base body 10 can also have a container-like upper part 10 'with essentially straight side walls in the manner of a storage container.
  • an essentially flat slide wall 13a or 13b is fixed, preferably rigidly connected, which is assigned to one of the inclined walls 12a or 12b of the shaft base body 10.
  • Each of these essentially flat slide walls 13a, 13b is inclined in the same way as the inclined walls 12a, 12b, and each slide wall 13a or 13b is guided and adjustable in the same direction as the double arrows 14a, 14b in or on the associated inclined wall 12a or 12b .
  • each slide wall 13a, 13b can be assigned a suitable adjusting device, not illustrated in more detail, which can be designed for slides in a manner known per se in order to adjust the necessary or desired adjustment options of the vertical guide walls 7a, 7b ( jointly or individually and independently of each other).
  • the slide walls 13a, 13b explained have the advantage that they can extend the inclined walls 12a, 12b of the shaft base body 10 in the direction of the vertical central plane 8 (as an additional inclined funnel guide for the material flow to be supplied).
  • suitable additional adjustment means can also be provided on the lower end sections of the vertical guide walls 7a, 7b, which, in particular with relatively large height dimensions of the vertical guide walls 7a, 7b, for maintaining the vertical position of these guide walls 7a, 7b also worry in this lower section.
  • additional adjustment means could expediently be coupled to the adjustment devices for the slide walls 13a, 13b. It is also understood that other suitable means for transverse adjustment of the vertical guide walls 7a, 7b can also be provided.
  • FIG. 1 shows the greatest clear width B of the ground material column 6 with the vertical guide walls 7a and 7b practically completely displaced outwards. 1, this results in a millbase column 6 with maximum width B that is symmetrical with respect to the vertical center plane 8 of the material bed roller mill or that is symmetrical with respect to the roller gap 4.
  • the two vertical guide walls 7a and 7b are adjusted by an equal amount against the vertical center plane 8, so that here again a regrind column 6a symmetrical with respect to the vertical center plane 8, but of relatively small width B 1 results.
  • FIGS. 1, 2 and 3 reveals that any settings and orientations of the mill column to be fed to the roll nip 4 are possible.
  • the asymmetrical supply of the regrind to the nip 4 is selected to a correspondingly large extent if the power consumption of the drive motor from one roller is higher than that of the other roller, so that this asymmetrical setting of the regrind stream is more pronounced on the outer circumferential side of the one Roller can be steered that the power consumption of the drive motors is the same for both rollers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Metal Rolling (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
EP90103272A 1989-03-10 1990-02-20 Gutbettwalzenmühle Expired - Lifetime EP0386520B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90103272T ATE93165T1 (de) 1989-03-10 1990-02-20 Gutbettwalzenmuehle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3907830A DE3907830A1 (de) 1989-03-10 1989-03-10 Gutbettwalzenmuehle
DE3907830 1989-03-10

Publications (3)

Publication Number Publication Date
EP0386520A2 EP0386520A2 (de) 1990-09-12
EP0386520A3 EP0386520A3 (de) 1991-05-29
EP0386520B1 true EP0386520B1 (de) 1993-08-18

Family

ID=6376046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103272A Expired - Lifetime EP0386520B1 (de) 1989-03-10 1990-02-20 Gutbettwalzenmühle

Country Status (7)

Country Link
US (1) US5096131A (es)
EP (1) EP0386520B1 (es)
AT (1) ATE93165T1 (es)
BR (1) BR9001130A (es)
DE (2) DE3907830A1 (es)
ES (1) ES2044265T3 (es)
ZA (1) ZA901230B (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228058C2 (de) * 1992-08-24 1995-04-20 Kloeckner Humboldt Deutz Ag Anlage und Verfahren zur Druckbehandlung körnigen Gutes
DE10233811B4 (de) * 2002-07-25 2013-05-29 Khd Humboldt Wedag Gmbh Zweiwalzenmaschine zur Druckbehandlung körnigen Gutes
DE102005045591A1 (de) * 2005-09-23 2007-03-29 Polysius Ag Vorrichtung zum Sichten von Aufgabegut
DK176687B1 (da) * 2007-07-10 2009-02-23 Smidth As F L Valsepresse til formaling af partikelformet materiale
EP2313199B1 (de) * 2008-07-02 2017-09-06 Bühler AG Vorrichtung und verfahren zur herstellung von mehl und/oder griess
DK2307144T3 (da) * 2008-07-09 2014-01-13 Khd Humboldt Wedag Gmbh Doseringsanlæg med to uafhængigt af hinanden varierbare drejeventiler
RU2014105512A (ru) * 2011-07-14 2015-08-20 Зе Юниверсити оф Мельбурн Усовершенствования способов сжатия материалов и/или удаления из них влаги
EP2666543B1 (en) * 2012-05-23 2020-04-08 Sandvik Intellectual Property AB Vertical shaft impact crusher feed tube
DE102013022206B4 (de) 2013-12-17 2015-07-30 Khd Humboldt Wedag Gmbh Materialflussklappe für Aufgabevorrichtung einer Rollenpresse
EP3229967B1 (en) 2014-12-10 2019-05-01 FLSmidth A/S An apparatus for grinding particulate material
AU2016341877B2 (en) * 2015-10-19 2019-12-19 Cold Jet, Llc Blast media comminutor
JP2022072254A (ja) * 2020-10-29 2022-05-17 セイコーエプソン株式会社 粗砕装置
CN113117807B (zh) * 2021-04-20 2022-06-24 长沙星成物流有限公司 一种有色金属冶炼废渣综合化环保处理工艺

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR345743A (fr) * 1904-08-20 1904-12-09 De La Buire Trémie distributrice à réglage rapide pour presses à boulets
DE1070903B (es) * 1958-03-24 1959-12-10
US3174696A (en) * 1962-05-11 1965-03-23 Deere & Co Roller mill
DE3407534A1 (de) * 1984-03-01 1985-09-05 Klöckner-Humboldt-Deutz AG, 5000 Köln Walzenmuehle zur druckzerkleinerung sproeden mahlgutes
DE3535406A1 (de) * 1985-10-03 1987-04-09 Krupp Polysius Ag Verfahren und anlage zur zerkleinerung von mahlgut

Also Published As

Publication number Publication date
ZA901230B (en) 1990-11-28
US5096131A (en) 1992-03-17
DE59002354D1 (de) 1993-09-23
ES2044265T3 (es) 1994-01-01
ATE93165T1 (de) 1993-09-15
EP0386520A3 (de) 1991-05-29
EP0386520A2 (de) 1990-09-12
DE3907830A1 (de) 1990-09-13
BR9001130A (pt) 1991-03-05

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