EP3356048B1 - Rotor pour un dispositif de broyage - Google Patents

Rotor pour un dispositif de broyage Download PDF

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Publication number
EP3356048B1
EP3356048B1 EP16770965.8A EP16770965A EP3356048B1 EP 3356048 B1 EP3356048 B1 EP 3356048B1 EP 16770965 A EP16770965 A EP 16770965A EP 3356048 B1 EP3356048 B1 EP 3356048B1
Authority
EP
European Patent Office
Prior art keywords
rotor
flange
disk
recesses
retaining
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.)
Active
Application number
EP16770965.8A
Other languages
German (de)
English (en)
Other versions
EP3356048A1 (fr
Inventor
Dieter Lompa
Rainer Kirchmann
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.)
KHD Humboldt Wedag AG
Original Assignee
KHD Humboldt Wedag 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 KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Publication of EP3356048A1 publication Critical patent/EP3356048A1/fr
Application granted granted Critical
Publication of EP3356048B1 publication Critical patent/EP3356048B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/04—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters hinged to the rotor; Hammer mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/16—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters hinged to the rotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C2013/2808—Shape or construction of beater elements the beater elements are attached to disks mounted on a shaft

Definitions

  • the invention relates to a rotor for a device for comminuting feed material, comprising a drive shaft, a plurality of rotor disks seated on the drive shaft and comminution tools arranged in the region of the outer circumference of the rotor disks;
  • the invention further relates to a device for comminuting feed material.
  • Rotors are used in devices for comminuting feedstock for coarse or fine comminution or disagglomeration of the feedstock by impact, shear or impact forces.
  • comminution tools such as knives, hammers or blow bars.
  • the most radially supplied to the rotating rotor feed material is detected and crushed by the crushing tools of the rotor, often in conjunction with statically arranged in the housing of the device elements such as baffles (stator).
  • Impact hammer mills for example, are used in the course of cement production for processing (comminution and simultaneous drying) of the raw meal.
  • blow bars thereby pendulum ie pivotally arranged on axle rods hammers are provided as comminution tools in the frequent case, which align themselves with rotation under centrifugal force and impact or. Exert impact forces on particles of the feed material.
  • Embodiments of impact hammer mills are described, for example, in the publications DE 24 16 499 C3 and DE 10 2006 033 300 A1 taught.
  • Another embodiment of such Hammer mill with swinging on a rotor hammer elements is in the German patent application DE 198 48 866 A1 disclosed.
  • the rotor discs are thereby loosely pushed onto the shaft and laterally secured, for example with stops against displacement, so that in particular the simplest, quickest possible assembly or disassembly of individual, worn discs is possible. Due to the given play in the connection of the disks to the shaft, however, there is a danger of the rotor disks from being thrown out of their intended equilibrium or operating position, especially in the case of the high torques typical for impact hammer mills and not only radially occurring forces upon impact with the feed particles damage to the discs can lead to shaft breakage. Also, a lateral hiking of the discs can not be ruled out.
  • a rotor according to the preamble of claim 1 is disclosed in the German Offenlegungsschrift DE 2 145 868 A1 disclosed.
  • the shaft is divided within the rotor.
  • the projecting into the rotor interior ends of the two shaft parts is held by a sleeve axially movable in alignment with each other. It is an impact mill with only two rotor disks.
  • the object of the invention is therefore to provide a rotor for a device for comminuting feed material, in which the risk of a rupture of the rotor disks and a lateral wander of the rotor disks is reduced.
  • the object of the invention is achieved by a rotor for a device for comminuting feed material with the features of claim 1. Further advantageous embodiments are specified in the subclaims to claim 1 and a corresponding apparatus for comminuting feed material in claim 6.
  • At least one retaining flange for connecting the rotor disk to the drive shaft is provided in the rotor for each rotor disk, wherein the at least one retaining flange is inseparably connected to the drive shaft and is detachably connected to the rotor disk.
  • the retaining flanges are permanently connected by welding with the shaft.
  • each rotor disk of the rotor is detachably connected to at least one retaining flange.
  • This connection takes place the transmission of torque from the drive shaft to the rotor disk.
  • the solubility of the compound in this case allows a rapid, separate replacement of individual rotor discs, which are exposed to heavy wear during operation, in particular due to the multiple impact of particles of the feed.
  • each individual rotor disk is protected against lateral migration.
  • the person skilled in the art will choose the strength of the connection according to the forces and torques occurring during typical operation of the rotor in the comminution device.
  • the rotor disks are connected to the respective retaining flanges by screw connection.
  • the compound according to the invention can be produced by the use of one or more connecting parts designed as discs, brackets, plates or the like elements laterally overlap the shaft-hub connection of the rotor disc and retaining flange and are bolted to the retaining flange and the rotor disc.
  • retaining flanges and rotor disks are then joined together sufficiently firmly but releasably connected in an indirect manner.
  • the inventive compound of each disc with at least one retaining flange, realized by screw, no loose-fitting rotor discs are present in the rotor.
  • the retaining flanges are formed annularly around the shaft and each rotor disk is held by exactly one retaining flange.
  • the rotor disk has a circular hub bore for the connection to the retaining flange.
  • each rotor disk thereby has a radial inner side, that is to say an inner boundary surface lying toward the shaft-in the geometrically idealized case of a circular ring cylinder-the inner lateral surface. It is envisaged that in this shaft-hub system, the rotor disk rests with its radial inner side or surface on the radial outer side or surface of the associated retaining flange.
  • shaft (retaining flange) and hub (rotor disk) can be a clearance clearance with little play in the case of crushing devices in which only small forces and torques occur during operation.
  • backlash-free connections in the form of transition fits are to be preferred for the sake of avoiding rupture of the rotor disks. Only in exceptional cases of particularly great forces and moments will an over-fitting be realized; their press fit in particular the disadvantage of a complex assembly / disassembly of the rotor disks.
  • connection element The actual non-positive connection between the rotor discs and the corresponding respective retaining flanges is made in this embodiment of the invention by a screw, are firmly bolted to the rotor disc and retaining flange each with one and the same connection element.
  • This may in particular be a laterally arranged plate which covers both the rotor disk and the associated retaining flange in the area of the mating surfaces lying one on top of the other.
  • a connecting plate in the form of a concentric with the rotor disk arranged annular disk on one side of the rotor disk, wherein the plate for reasons of ease of assembly consists of several separate parts, for example, consists of two Halbnikringusionn. It makes sense to use on the other side of disc or flange to further secure the screw analogous another multi-piece connection plate and tighten nuts.
  • each retaining flange distributed over its outer circumference recesses (flange recesses), which are similar to tuning forks or gears radially outward and open to the side surfaces. Between each two adjacent recesses remain in the outer peripheral region of the retaining flange web-like parts of the retaining flange, referred to as flange webs.
  • the rotor disk associated with the respective retaining flange has recesses (disk recesses) and disk webs distributed over its inner circumference.
  • flange recesses and ribs correspond to the disc recesses and ribs, so that in the fully assembled rotor, ie in the operating state, the radial outer sides of the flange webs and the radial (inwardly toward the shaft) sides of the respective disk webs as centering surfaces with the already described fit to each other. Accordingly, the recesses of rotor disk and retaining flange adjoin one another and form common recesses.
  • the rotor disks and retaining flanges are each of the same type, so that they coincide in shape and size, ie each congruent to each other.
  • both the flange recesses are congruent to each other, as well as the disc recesses to each other.
  • the flange recesses, and thus also the disk recesses and the flange and disk webs evenly distributed on the circumference of each retaining flange or each rotor disk. With regard to this distribution there is therefore rotational symmetry or radial symmetry.
  • the recesses are offset from each other by an angle of 60 ° with respect to a rotation about the axis of rotation of the shaft.
  • the flange recesses are only slightly larger in their (all dimensions) areal extent along the outer radial circumference are given as the along the outer periphery given (areal) expansion of a flange web.
  • the longitudinal extent of the recesses of the flanges or discs by about 0.5% to a maximum of 10% greater than to choose the extension of the webs (based on the maximum dimension).
  • the rotor according to the invention is suitable for all kinds of feedstock chopping machines whose crushing operation is based on the rotation of a rotor-milled rotor, often in cooperation with a stator provided correspondingly in or as the casing of the apparatus.
  • a rotor in one of the embodiments according to the invention within the comminution unit of known per se, With the rotor principle working comminution devices, the invention also includes devices for comminuting feed material having a rotor according to the invention in one of the described embodiments.
  • an advantageous embodiment of the invention provides that the comminution tools are in the form of hammers.
  • the hammers are pivotally arranged on axle rods which, usually parallel to the drive shaft, pierce the rotor disks.
  • An important embodiment of the device for comminuting feed material which comprises a rotor according to the invention, provides that the comminution tools of the rotor are designed as hammers, blow bars or similar known impact tools and that the rotor is assigned an impact hammer mill stator.
  • the rotor according to the invention is therefore part of an impact hammer mill, whose comminution unit comprises not only the rotor but also a stator which is typical for impact hammer mills.
  • the stator has impact elements fixedly arranged in an additional impact space, such as e.g. Impingement strips, to which the particles of the charge of transport collected by the hammers of the rotor are hurled and thereby (pre-) shredded.
  • FIG. 1 a rotor 1 according to the invention for a device for comminuting feed material, for example for an impact hammer mill used in cement production, is shown. Not shown are the shredding tools. However, axial holes 3 arranged in the outer region of the rotor disks 2, which are provided for axle rods, on which pivotable comminution tools, in particular hammers, are arranged in the region between the rotor disks 2, can be seen. Upon rotation of the rotor 1, the hammers pivot following the centrifugal force in a radially outward position in which they protrude beyond the outer edge of the disc and act on crushing particles of the feedstock.
  • the rotor disks 2 are arranged on a drive shaft 4. Each rotor disk 2 is arranged on an annular retaining flange 5.
  • FIG. 3 shows in a schematic representation of the retaining flanges 5 on the drive shaft 4.
  • FIG. 2 is in a rotation axis of the drive shaft 4 containing longitudinal section through the rotor 1 from FIG. 1
  • a connecting element 6 designed as a connecting plate is arranged on each side. Both rotor disk 2 and the associated retaining flange 5 are by means of screws 7 and nuts 8 on the connecting elements 6 bolted.
  • a backlash-free connection is produced between the rotor disk 2 and the retaining flange 5, via which the forces and torques are transmitted and during operation of the rotor 1 no beating of the rotor disks 2 and no lateral migration of the rotor disks 2 along the drive shaft 4th can occur.
  • the connecting elements 6 are given in the illustrated embodiment as circular ring disks, which are designed in two parts for easy assembly.
  • FIG. 4 shows a connected via a retaining flange 5 with the drive shaft 4 rotor disk 2 in cross-sectional view.
  • Arrangements according to the invention for problem-free mounting of the rotor disks 2 in this operating position are limited to those in the inner region FIGS. 5 and 6 represented with the respective enlargements of the areas X and Y.
  • the retaining flange 5 has in this case along its outer circumference uniformly distributed flange recesses 9 and flange webs 10 between each two adjacent flange recesses 9.
  • the rotor disk 2 also has correspondingly uniformly distributed disk recesses 11 and disk webs 12 along its inner circumference.
  • the recesses 9, 11 are slightly larger in terms of their extent along the circumference than the webs 10, 12, so that in the position of rotor disk 2 and retaining flange 5 to each other, as in FIG. 5 is shown, a clearance is given.
  • FIG. 5 shown position shows the relative to the rotation angle about the rotation axis of the shaft 4 rotated position of the rotor disk 2 to the retaining flange 5.
  • flange recesses 9 and disk webs 12 and flange webs 10 and disk recesses 11 opposite. This allows a largely low-friction, blockade-free sliding of the rotor disks 2 via or on the retaining flanges 5 in the axial direction during assembly of the rotor disks 2.
  • FIG. 5 shows FIG. 6 the position of rotor disks 2 and retaining flanges 5 in the fully assembled state, ie in the operating state.
  • This is achieved by the rotor disk 2 from the mounting position ( FIG. 5 ) is rotated so far that the flange webs 10, the corresponding disc webs 12 and thus the flange recesses 9 are the corresponding disc recesses 11 opposite. In the illustrated embodiment with 6 recesses (and 6 webs) this corresponds to a rotation through an angle of 30 °.
  • the top surfaces of the disk webs 12 and flange webs 10 lie on one another as mating surfaces or centering surfaces ( FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (7)

  1. Rotor (1) pour un dispositif destiné au broyage d'un matériau chargé, comprenant
    - un arbre d'entraînement (4),
    - une pluralité de disques de rotor (2) reposant sur l'arbre d'entraînement (4) et
    - des outils de broyage disposés dans la région de la périphérie extérieure des disques de rotor (2),
    dans lequel, pour chaque disque de rotor (2), au moins une bride de retenue (5) est prévue pour la liaison du disque de rotor (2) à l'arbre d'entraînement (4), dans lequel l'au moins une bride de retenue (5) est reliée de manière non amovible à l'arbre d'entraînement (4) et est reliée de manière amovible au disque de rotor (2), dans lequel
    - pour chaque disque de rotor (2), exactement une bride de retenue (5) est prévue, dans lequel la bride de retenue (5) est réalisée de manière annulaire autour de l'arbre d'entraînement (4), caractérisé en ce que
    - chaque disque de rotor (2) repose avec ajustement sur le côté extérieur radial de la bride de retenue (5) correspondante par son côté intérieur radial fourni par un alésage de moyeu, et en ce que
    - chaque disque de rotor (2) et la bride de retenue (5) correspondante sont reliés l'un à l'autre par force au moyen d'une liaison par vissage respective par rapport à au moins un élément de liaison (6).
  2. Rotor (1) selon la revendication 1,
    caractérisé en ce que
    les brides de retenue (5) sont reliées à l'arbre d'entraînement (4) par une liaison soudée.
  3. Rotor (1) selon l'une des revendications 1 ou 2,
    caractérisé en ce que
    - chaque bride de retenue (5) comprend des évidements ouverts (9) répartis sur la périphérie extérieure, deux évidements de bride adjacents (9) laissant à chaque fois entre eux une nervure de bride (10),
    - le disque de rotor (2) associé à la bride de retenue (5) respective comprend des évidements de disque ouverts (11) et des nervures de disque (12) correspondant aux évidements de bride (9) et aux nervures de bride (10) et répartis sur sa périphérie intérieure, les côtés radiaux des nervures de bride (10) et des nervures de disque (12) correspondantes reposant les uns sur les autres avec ajustement en tant que surfaces de centrage à l'état monté du rotor (1), et en ce que
    - pour la simplification d'une étape de montage consistant en la poussée axiale du disque de rotor (2) sur la bride de retenue (5) associée, les étendues, données le long de la périphérie, des évidements de bride (9) sont dimensionnées de telle sorte que dans au moins une position du disque de rotor (2), tournée par rapport à l'état monté, par rapport à la bride de retenue (5), une nervure de disque (12) d'étendue plus faible donnée le long de la périphérie est située en regard de chaque évidement de bride (9).
  4. Rotor (1) selon la revendication 3,
    caractérisé en ce que
    - les disques de rotor (2) sont congruents les uns aux autres,
    - les brides de retenue (5) sont congruentes les unes aux autres,
    - les évidements de bride (9) sont répartis uniformément sur la périphérie de chaque bride de retenue (5) et sont congruents les uns aux autres,
    - les évidements de disque (11) sont congruents les uns aux autres, et en ce que
    - l'étendue, donnée le long de la périphérie extérieure, d'un évidement de bride (9) est supérieure, de préférence est supérieure dans une faible mesure (d'environ 0,5 % à environ 10 %), à l'étendue, donnée le long de la périphérie extérieure, d'une nervure de bride (10).
  5. Rotor (1) selon l'une des revendications 1 à 4,
    caractérisé en ce que
    des marteaux sont prévus en tant qu'outils de broyage, les marteaux étant disposés de manière pivotante sur des tiges axiales traversant les disques de rotor (2).
  6. Dispositif destiné au broyage d'un matériau chargé,
    caractérisé en ce que
    le dispositif de broyage comprend un rotor (1) selon l'une des revendications 1 à 5.
  7. Dispositif de broyage selon la revendication 6,
    caractérisé en ce que
    - les outils de broyage du rotor (1) sont réalisés sous forme de marteaux et
    - un stator de broyeur à marteaux à percussion est associé au rotor (1).
EP16770965.8A 2015-09-29 2016-09-28 Rotor pour un dispositif de broyage Active EP3356048B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015012588.5A DE102015012588B4 (de) 2015-09-29 2015-09-29 Rotor für eine Zerkleinerungsvorrichtung
PCT/EP2016/073140 WO2017055365A1 (fr) 2015-09-29 2016-09-28 Rotor pour un dispositif de broyage

Publications (2)

Publication Number Publication Date
EP3356048A1 EP3356048A1 (fr) 2018-08-08
EP3356048B1 true EP3356048B1 (fr) 2019-07-24

Family

ID=57003525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16770965.8A Active EP3356048B1 (fr) 2015-09-29 2016-09-28 Rotor pour un dispositif de broyage

Country Status (6)

Country Link
US (1) US10786815B2 (fr)
EP (1) EP3356048B1 (fr)
CN (1) CN108025311B (fr)
DE (1) DE102015012588B4 (fr)
RU (1) RU2705267C1 (fr)
WO (1) WO2017055365A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2718191C1 (ru) * 2019-08-16 2020-03-31 Владимир Петрович Папулов Механизм управления сцепной муфтой
CN112916131A (zh) * 2019-12-07 2021-06-08 况永刚 升级粉碎机

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
GB159925A (en) * 1919-11-07 1921-03-07 Frederick Seymour Improved process and apparatus for pulverizing or fine grinding
GB336776A (en) * 1928-11-15 1930-10-23 Paul Arthur Hirsch Improved pulverizing machine
US3235189A (en) * 1963-10-15 1966-02-15 Riley Stoker Corp Pulverizer
US3533565A (en) * 1968-09-19 1970-10-13 Reuben A Weiner Hammermill with side-by-side rotating hammer systems
DE2145868C3 (de) * 1971-09-14 1979-01-04 Hazemag Dr. E. Andreas Gmbh & Co, 4400 Muenster Rotor für von heißen Trocknungsgasen durchströmte Prallmühlen
US3724767A (en) * 1971-10-07 1973-04-03 Piqua Eng Inc Shredder-grinder machine having an improved rotor
DE2416499C3 (de) 1974-04-04 1980-06-26 Emil Dipl.-Ing. 5232 Bettgenhausen Polus Prallhammermuhle
DE3938725A1 (de) * 1989-11-23 1991-05-29 Lindemann Maschfab Gmbh Rotor fuer eine zerkleinerungsmaschine und schutzkappen fuer den rotor
SU1772321A1 (ru) * 1990-06-27 1992-10-30 Kemer T I Pishchevoj Promy Potop moлotkoboй дpoбилkи
US5154363A (en) * 1990-08-31 1992-10-13 Eddy William A Reciprocating action miller
CN2299657Y (zh) * 1997-06-16 1998-12-09 张进明 盘座组合迫碎式针筒粉碎机
DE19848866A1 (de) 1998-10-23 2000-04-27 Krupp Foerdertechnik Gmbh Hammerbrecher
DE10219482B4 (de) * 2002-04-30 2004-05-27 Netzsch-Feinmahltechnik Gmbh Rührwerksmühle
EP1716346B1 (fr) * 2004-02-19 2008-03-05 Ernst Grob Ag Profil de dent d'un arbre cannele
DE102006033300B4 (de) 2006-07-17 2017-08-31 Ejk Engineering Gmbh Prallhammermühle
DE102008013232A1 (de) 2008-03-07 2009-09-17 Pallmann Maschinenfabrik Gmbh & Co Kg Vorrichtung zum Zerkleinern von Aufgabegut mit einem Rotor
EP2471600B1 (fr) * 2011-07-22 2013-07-03 HAZEMAG & EPR GmbH Rotor d'un concasseur à marteaux
MX361972B (es) * 2012-11-07 2018-12-19 Heritage Hd Llc Trituradora de impacto de eje vertical.

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
US10786815B2 (en) 2020-09-29
EP3356048A1 (fr) 2018-08-08
RU2705267C1 (ru) 2019-11-06
DE102015012588B4 (de) 2017-12-28
US20180280985A1 (en) 2018-10-04
WO2017055365A1 (fr) 2017-04-06
DE102015012588A1 (de) 2017-03-30
CN108025311A (zh) 2018-05-11
CN108025311B (zh) 2020-07-03

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