EP3313576B1 - Broyeur à rouleaux à lit de matériau - Google Patents

Broyeur à rouleaux à lit de matériau Download PDF

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Publication number
EP3313576B1
EP3313576B1 EP16736390.2A EP16736390A EP3313576B1 EP 3313576 B1 EP3313576 B1 EP 3313576B1 EP 16736390 A EP16736390 A EP 16736390A EP 3313576 B1 EP3313576 B1 EP 3313576B1
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EP
European Patent Office
Prior art keywords
rocker
roller
roller mill
bed
mill according
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EP16736390.2A
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German (de)
English (en)
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EP3313576A1 (fr
Inventor
Dirk Hoffmann
Ralf Frankenberger
Hardy Lessmeister
Lukas SCHMITT
Karl-Heinz Schütte
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Gebr Pfeiffer Se
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Gebr Pfeiffer Se
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    • 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
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • 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
    • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
    • B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/02—Codes relating to disintegrating devices adapted for specific materials for reinforced concrete

Definitions

  • the present invention relates to a high-bed roller mill, comprising two juxtaposed, in a ground state axially parallel aligned and counter-rotating rollers, which form a nip between them.
  • Such high-bed roll mills also called roll presses, are used for example in the cement industry to grind cement raw material, cement clinker and granulated blastfurnace slag.
  • a nip or grinding gap is provided between the two grinding rollers of the high-bed roller mill.
  • the material to be shredded is located above the nip.
  • the two rollers driven in opposite directions cause the material to be shredded pulled through the nip, it is pressure-loaded and thus crushed.
  • the two grinding rollers must be pressed with very high forces radially in the direction of the nip, so that the desired Goodbettzerkleintation sets.
  • one roller is designed as a hard roller and the other as a loose roller.
  • the pressure necessary for comminuting the material to be ground is applied to the idler roll by way of articulated hydraulic cylinders.
  • a frame is provided. Since the forces acting on the rollers, especially in very hard mineral materials are large, the requirements for the stability of the frame are very high. This results in that Gutbett roller mills have a complex frame construction.
  • a high-bed roller mill comprising two juxtaposed, in a ground state axially parallel aligned and counter-rotating rollers forming a nip between them, a foundation, two roll holders, in each of which a roller is rotatably mounted, each Roller holder is pivotally mounted to the foundation, and a nip acting on the tensioner, which is arranged outside the nip and connects both roll holders together, each roll holder two Swing, which are formed as separate components, each arranged at one end of a roller and are deflected independently, at least one rocker is able to perform at least two of the following movements: pivotal movement about an axis parallel to the roll axis, rotational movement about the longitudinal axis the rocker, rotational movement about an axis parallel to the longitudinal axis of the rocker, rotational movement about an axis perpendicular to the longitudinal axis of the rocker.
  • the ground state of the good bed roller mill is to be understood
  • the good-bed roller mill according to the invention has a comparatively simple and inexpensive construction, since the force-absorbing frame construction known Gutbett roller mills is replaced by a roller guide, which is essentially composed of two swing mounts and two roller mounts.
  • the good-bed roller mill according to the invention is also comparatively compact, so that the good-bed roller mill according to the invention requires a comparatively small footprint.
  • the compact design also reduces the weight and handling of the individual components.
  • the smooth running of the machine during operation is also increased by the comparatively low inertial mass of the components.
  • the formation of the wings as separate components has the advantage that the rollers, for example, for maintenance work on the surface of the roller, are easily accessible from the side facing away from the refining gap. A time-consuming and costly removal of the rollers is not mandatory.
  • the separation of the roll holder in two wings means a decoupling of the movement of the individual wings, so that the expansion of the nip can be reduced in the passage of an oversized or too hard ground material on a part of the roll width. As a result, the milling quality across the nip width is improved and the energy consumption per milled ton is reduced.
  • At least one rocker of a roll support is capable of rotational movement about an axis perpendicular to the longitudinal axis of the rocker and perpendicular to the longitudinal axis of the roll. In this movement possibility, a comparatively high proportion of the forces occurring during the milling process due to skewing of bending rolls can be prevented.
  • At least one rocker is mounted spherically.
  • the clamping device comprises two clamping units and each clamping unit is connected to two opposite wings. In this way, a regulation of the nip across the width and thus a further improvement of the grinding quality can be achieved.
  • the clamping device comprises a clamping cylinder and the connection points of the clamping cylinder are rotatably mounted on the rockers.
  • the clamping cylinder can be performed even without elaborate joints in the cylinder interior.
  • the clamping device comprises a clamping cylinder and at least one end of each clamping cylinder is detachably connected to a rocker. This allows access to the rollers or nip for maintenance and malfunction.
  • each rocker is pivotable relative to the foundation from an operating position to a maintenance position.
  • each rocker by at least 15 °, preferably up to 90 ° relative to the foundation hinged in the sense of hinged in order to obtain a free access to a roller and to optionally replace the roller can.
  • each rocker a surface or device is provided, on which the rocker can be stored when unfolding.
  • Add-on parts, such as gearbox, can be stored in the devices during Ausklappvorgang.
  • the cylinders of the clamping device can be used as auxiliary elements in the process of unfolding.
  • Cylindrical roller or sliding bearings are preferably used for the storage of the rollers, since they are relatively cheap and have a high load rating based on the volume of construction.
  • each roll holder has at least one receptacle for locking bolts, so that each roll can be used as a Loswalze and locking roller to obtain the most uniform wear of the rolls.
  • Fig. 1 shows a good-bed roller mill 10 in a perspective view obliquely from above.
  • the good-bed roller mill 10 comprises two juxtaposed, axially parallel aligned rollers 12, 14 which are rotatably mounted.
  • the rollers 12, 14 are individually driven by means of drive units 16, 18 and rotate in a known manner in opposite directions.
  • a clamping device with clamping cylinders 20, 22, such as hydraulic cylinders is provided.
  • the tensioning device is arranged outside, in particular above the roller gap formed by the rollers 12, 14.
  • a foundation 11 comprises two parallel and spaced strip-shaped rocker receivers 24, 26, which are aligned substantially perpendicular to the axis of the rollers 12, 14.
  • two roller holders 28,30 are arranged, in each of which a roller 12, 14 is rotatably mounted.
  • Each roller holder 28, 30 has two formed as separate components rockers 32, 34 and 36, 38, which are each rotatably and pivotally attached to the rocker mounts 24, 26.
  • the rockers 32, 34 and 36, 38 are independently deflectable.
  • Each rocker 32, 34, 36, 38 comprises two substantially C-shaped plate members 40, 42, which are arranged parallel and at a distance from each other.
  • the upper and lower portions of the two C-shaped plate members 40, 42 are connected to each other by means of an upper pivot axis 44 and a lower pivot axis 46 (see Fig. 3 ).
  • rocker seats 24 In the rocker seats 24, 26 holes are provided through which passes through the lower rocker axis 46. In this way, a hinge connection between the foundation, in particular the rocker receptacle 24, 26 with the corresponding rockers 32, 34, 36, 38 is formed. In order to achieve a possible low-friction pivoting of the rockers 32, 34, 36, 38 with respect to the rocker seat 24, 26, not shown, maintenance-free spherical plain bearings are provided.
  • Each clamping cylinder 20, 22 has at its two end portions a bore through which passes through the upper rocker axis 44. This creates a joint connection between a rocker 32, 34, 36, 38 and an end portion of the clamping cylinder 20, 22. Although not shown, so hinge bearings are provided to achieve a low-friction pivotal movement between clamping cylinder 20, 22 and rockers 32, 34, 36, 38.
  • the two clamping cylinders 20, 22 are detachably connected to the wings 32, 34, 36, 38.
  • each a rocker seat 24, 26, the two attached to the rocker seat 24 and 26 rockers 32, 36 and 34, 38 and the associated clamping cylinder 20 and 22 two consecutively arranged frame in which the two rollers 12 , 14 are arranged.
  • the rollers 12, 14 each have a roller body 50 and a shaft 52 (see Fig. 3 ).
  • the rockers 32, 34, 36, 38 are arranged at both rollers 12, 14 respectively on both sides of the roller body 50 on the shaft 52, wherein the rollers 12, 14 are each rotatably mounted in the concave portion of each rocker 32, 34, 36, 38.
  • the bearings of the rollers 12, 14 by means of suitable bearings, such as roller bearings and / or plain bearings.
  • suitable bearings such as roller bearings and / or plain bearings.
  • multi-row cylindrical roller bearings, multi-row tapered roller bearings or radial plain bearings are suitable.
  • Fig. 4 shows the good bed roller mill 10 in a maintenance position.
  • the clamping cylinders 20, 22 of the wings 32, 34, 36, 38 are removed.
  • the rockers 32, 34, 36, 38 are pivoted outwardly or folded outwards, so that the rollers 12, 14 are freely accessible to perform maintenance on the rollers or to replace them.
  • the clamping cylinders 20, 22 can be decoupled on one side.
  • Fig. 4 shows the rockers 32, 34, 36, 38 by a large angle, in particular by an angle> 15 °, preferably up to an angle of 90 °, with respect to the rocker seat 24, 26 are pivoted.
  • Fig. 5 shows the good bed roller mill 10 in a ground state.
  • the two rollers 12, 14 have a uniform nip 54 across the width of the roller 12, 14.
  • the two clamping cylinders 20, 22 are in their normal position.
  • the material to be ground is placed above the nip 54 on the two rollers 12, 14. Due to the friction on the roll surface, the material to be ground is pulled into the nip 54 and comminuted in the nip 54.
  • the wings 32, 36 and 34, 38, the clamping cylinders 20, 22 and the rocker seats 24, 26 absorb the force exerted by the ground material in the nip 54 on the rollers 12, 14, and ensure that the nip 54 does not change significantly during the grinding process.
  • nip 54 which is greater than the nip and intended to be crushed. If a largest grain or foreign matter is very hard and can not be crushed by the rollers 12, 14, the distance between the rollers 12, 14 must be increased, for example, to avoid damage to the rollers 12, 14.
  • the clamping cylinder 20, 22 are deflected, ie extended to let the material too large or too hard to pass.
  • the wings 32, 36 and 34, 38 are deflected in this case.
  • Each of the rockers 32, 34 and 36, 38 is capable of pivotal movement about an axis parallel to the roll axis.
  • the pivotal movement about the axis parallel to the roll axis ensures that the distance between the rolls 12, 14 can be increased or decreased.
  • the clamping cylinders 20, 22 provide a counter-directed force, so that the distance between the rollers 12, 14 remains almost the same.
  • each rocker 32, 34 and 36, 38 is able to rotate about its longitudinal axis or an axis parallel to its longitudinal axis.
  • the entire rocker 32, 34 and 36, 38 rotate as a rigid body about a rotation axis.
  • the wings 32, 34 and 36, 38 laterally elastically dodge or pivot about an axis perpendicular to the roll axis and its longitudinal axis.
  • pan and rotation movements can occur here superimposed.
  • the rockers 32, 34 and 36, 38 are not rigid, but by means of a hinge connection with the foundation, in particular the swing seats 24, 26 are connected and beyond rotatable, optionally in itself rotatable, the wings 32, 34 and 36 respectively , 38 at least partially follow the bending of the roll axis due to a largest grain or foreign matter and thus absorb some of the forces that occur during the deflection of the rolls 12, 14.
  • the force that occurs due to a roll deflection on the roller bearing between roller 12, 14 and rocker 32, 34 and 36, 38 is significantly reduced compared to a rigid connection between Rocker and foundation, where all the force that occurs due to a roll deflection, is transferred to the bearing between the rocker and roller.
  • FIG. 7 shows a second embodiment of a high-bed roller mill 110 in a perspective view obliquely from above.
  • illustrated embodiment of a high-bed roller mill 110 differs from that in the FIGS. 1 to 6 illustrated embodiments of a high-bed roller mill 10 characterized in that the rockers and the foundation are designed differently.
  • the two substantially C-shaped plate elements 140, 142 are connected to each other at least in sections at their rear side.
  • an upper swing arm 148 is provided, on which the respective clamping cylinders 120, 122 are arranged articulated.
  • the rocker receptacles 124, 126 each include a bottom plate 160 and two perpendicular to the bottom plate 160 spaced side walls 162, between which two opposite wings 132, 136 and 134, 138 rotatably mounted in the rocker seat 124, 126 about a lower pivot axis 146 are.
  • a bore 164 are provided in the rocker arms 132 and 134 and in the rocker receptacles 124 and 126, through which a locking bolt 166 can be performed, so that in the in Fig. 7 illustrated embodiment, the left roller 114 is formed as a fixed roller and the right roller 112 as a Loswalze.
  • FIG. 8 shows a third embodiment of a high-bed roller mill 210, which differs from the previously shown Gutbett roller mills in that both rollers 212, 214 can be used either as Loswalze or as a fixed roller.
  • both rollers 212, 214 can be used either as Loswalze or as a fixed roller.
  • a further bore 268 for receiving a locking pin in the rocker seat 226 and in the rocker 238 is provided.
  • the two counter-rotating rollers are operated in a deep-rolling / idler-roller pairing.
  • the good bed roller mill can be operated with the help of additional elements with two Loswalzen.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)

Claims (11)

  1. Broyeur à cylindres à lit de matière, comprenant deux cylindres (12, 14 ; 112, 114 ; 212, 214) agencés en juxtaposition, orientés avec parallélisme axial dans une condition initiale, tournant dans des directions opposées et réservant entre eux un interstice (54) ; une structure d'assise (11) ; deux supports (28, 30) dans lesquels un cylindre respectif (12, 14 ; 112, 114 ; 212, 214) est monté à rotation, chaque support (28, 30) de cylindre étant fixé de manière pivotante à ladite structure d'assise (11) ; et un dispositif de serrage qui agit sur ledit interstice (54) entre cylindres, est implanté à l'extérieur dudit interstice (54) entre cylindres, et relie l'un à l'autre les deux supports de cylindres, chaque support (28, 30) de cylindre étant muni de deux bras oscillants (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) réalisés en tant qu'éléments structurels distincts, respectivement disposés à une extrémité d'un cylindre (12, 14 ; 112, 114 ; 212, 214) et pouvant effectuer des excursions pivotantes indépendamment l'un de l'autre, caractérisé par le fait qu'au moins un bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) d'un support (28, 30) de cylindre est en mesure d'exécuter au moins deux, parmi les mouvements suivants : mouvement pivotant autour d'un axe, parallèlement à l'axe du cylindre ; mouvement rotatoire autour de l'axe longitudinal dudit bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) ; mouvement rotatoire autour d'un axe, parallèlement audit axe longitudinal du bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) ; mouvement rotatoire autour d'un axe, perpendiculairement audit axe longitudinal dudit bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238).
  2. Broyeur à cylindres à lit de matière, selon la revendication 1, caractérisé par le fait qu'au moins un bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) d'un support (28, 30) de cylindre est en mesure d'exécuter un mouvement rotatoire autour d'un axe, perpendiculairement à l'axe longitudinal dudit bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) et perpendiculairement à l'axe longitudinal du cylindre (12, 14 ; 112, 114 ; 212, 214).
  3. Broyeur à cylindres à lit de matière, selon la revendication 1 ou 2, caractérisé par le fait qu'au moins un bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) d'un support (28, 30) de cylindre est monté de manière sphérique.
  4. Broyeur à cylindres à lit de matière, selon l'une des revendications précédentes, caractérisé par le fait que le dispositif de serrage inclut deux unités de serrage, et chaque unité de serrage est reliée à deux bras oscillants (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) opposés.
  5. Broyeur à cylindres à lit de matière, selon l'une des revendications précédentes, caractérisé par le fait qu'au moins un bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) est relié à la structure d'assise (11) et/ou au dispositif de serrage, au moyen d'une liaison articulée.
  6. Broyeur à cylindres à lit de matière, selon l'une des revendications précédentes, caractérisé par le fait que le dispositif de serrage inclut un vérin de serrage (20, 22), et les points de rattachement dudit vérin de serrage (20, 22) aux bras oscillants (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) sont fixés de manière rotative.
  7. Broyeur à cylindres à lit de matière, selon l'une des revendications précédentes, caractérisé par le fait que le dispositif de serrage inclut un vérin de serrage (20, 22), et au moins une extrémité dudit vérin de serrage (20, 22) est reliée de manière libérable à un bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238).
  8. Broyeur à cylindres à lit de matière, selon l'une des revendications précédentes, caractérisé par le fait que chaque bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) peut pivoter, par rapport à la structure d'assise (11), d'un emplacement de service à un emplacement d'entretien.
  9. Broyeur à cylindres à lit de matière, selon la revendication 8, caractérisé par le fait que chaque bras oscillant (32, 34, 36, 38 ; 132, 134, 136, 138 ; 234, 238) peut pivoter, par rapport à la structure d'assise (11), d'au moins 15° et, de préférence, d'un angle mesurant jusqu'à 90°.
  10. Broyeur à cylindres à lit de matière, selon l'une des revendications précédentes, caractérisé par le fait que des paliers à rouleaux cylindriques, ou des paliers lisses, sont prévus pour le montage des cylindres (12, 14 ; 112, 114 ; 212, 214) et/ou des vérins de serrage (20, 22 ; 120, 122).
  11. Broyeur à cylindres à lit de matière, selon l'une des revendications précédentes, caractérisé par le fait que chaque support de cylindre est pourvu d'au moins un logement affecté à des boulons (166 ; 264) de blocage à demeure.
EP16736390.2A 2015-06-23 2016-06-15 Broyeur à rouleaux à lit de matériau Active EP3313576B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015110033.9A DE102015110033A1 (de) 2015-06-23 2015-06-23 Gutbett-Walzenmühle
PCT/EP2016/063684 WO2016207039A1 (fr) 2015-06-23 2016-06-15 Broyeur à rouleaux à lit de matériau

Publications (2)

Publication Number Publication Date
EP3313576A1 EP3313576A1 (fr) 2018-05-02
EP3313576B1 true EP3313576B1 (fr) 2019-03-27

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Application Number Title Priority Date Filing Date
EP16736390.2A Active EP3313576B1 (fr) 2015-06-23 2016-06-15 Broyeur à rouleaux à lit de matériau

Country Status (9)

Country Link
US (1) US11007533B2 (fr)
EP (1) EP3313576B1 (fr)
JP (1) JP6749350B2 (fr)
CN (1) CN107820448B (fr)
BR (1) BR112017023727B1 (fr)
DE (1) DE102015110033A1 (fr)
DK (1) DK3313576T3 (fr)
TR (1) TR201906052T4 (fr)
WO (1) WO2016207039A1 (fr)

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SE541957C2 (en) 2017-11-10 2020-01-14 Metso Sweden Ab A deflection distributor refitting kit, a method for mounting and a roller crusher comprising such kit
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CN107820448A (zh) 2018-03-20
TR201906052T4 (tr) 2019-05-21
DK3313576T3 (da) 2019-06-17
JP2018518364A (ja) 2018-07-12
WO2016207039A1 (fr) 2016-12-29
JP6749350B2 (ja) 2020-09-02
DE102015110033A1 (de) 2016-12-29
BR112017023727A2 (pt) 2018-07-31
US11007533B2 (en) 2021-05-18
CN107820448B (zh) 2019-12-17
BR112017023727B1 (pt) 2021-06-29
EP3313576A1 (fr) 2018-05-02
US20180272355A1 (en) 2018-09-27

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