EP2098297B1 - Rotor et dispositif de broyage de matériaux de chargement - Google Patents

Rotor et dispositif de broyage de matériaux de chargement Download PDF

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Publication number
EP2098297B1
EP2098297B1 EP09002956.2A EP09002956A EP2098297B1 EP 2098297 B1 EP2098297 B1 EP 2098297B1 EP 09002956 A EP09002956 A EP 09002956A EP 2098297 B1 EP2098297 B1 EP 2098297B1
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EP
European Patent Office
Prior art keywords
rotor
discs
power transmission
rotor according
transmission elements
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
EP09002956.2A
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German (de)
English (en)
Other versions
EP2098297A3 (fr
EP2098297A2 (fr
Inventor
Hartmut Pallmann
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.)
Pallmann Maschinenfabrik GmbH and Co KG
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Pallmann Maschinenfabrik GmbH and Co KG
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Publication of EP2098297A3 publication Critical patent/EP2098297A3/fr
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Publication of EP2098297B1 publication Critical patent/EP2098297B1/fr
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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
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/146—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with a rotor comprising a plurality of axially contiguous disc-like segments each having at least one radially extending cutting element
    • 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

Definitions

  • the invention relates to a rotor for comminuting feed material according to the preamble of patent claim 1 and to a device having such a rotor according to the preamble of patent claim 14.
  • the rotor is essentially composed of a shaft and rotor disks arranged thereon, over the circumference of which the comminution tools are distributed.
  • the crushing tools can be formed by knives, rigid or pendulum suspended hammers, shearing tools or the like.
  • the rotor is assigned a stator which is equipped with counter-blades, baffles or screen surfaces, or another rotor whose rotor disks interact with the rotor disks of the first rotor.
  • the feed material is fed radially to the rotor, where it is detected by the comminution tools and comminuted in cooperation with the stator tools or the second rotor.
  • the a generic device are diverse in nature and range from plastics of any kind on sheets, textiles and electronic waste to composite materials and scrap tires.
  • a large mechanical resistance is opposed to the rotor during the comminution operation, so that the transmission of power from the drive shaft to the rotor disks is of great importance.
  • a modular rotor structure with a certain number of rotatably mounted on the shaft rotor disks plays in view of the assembly of the rotor but also when replacing damaged or used rotor discs a large role, since the rotor can be broken down into smaller components, if necessary, on the one hand easier to handle and to replace the other targeted.
  • a rotor structure is especially used in conjunction with a frictionally generated Frictional connection between the drive shaft and rotor disks at the end requires that the driving force is transmitted safely and without slippage from one rotor disk to the next.
  • a device for crushing elastomers whose comminuting unit is formed by two rotors which are corrugated over their circumference.
  • the rotors are essentially each formed by a hollow cylinder whose axial ends are screwed to coaxial support disks, which in turn each sit rotationally fixed on a driven stub shaft.
  • the rotor thus has no continuous drive shaft.
  • a similarly constructed rotor is from the DE 199 28 034 A1 also known, in which instead of a continuous shaft only stub shafts are attached to the end faces of the rotor. Moreover, the rotor is formed by coaxially assembled discs, which are connected to each other axially via longitudinal latch.
  • the US 5,381,973 also discloses axial centering pins in the contact area of two adjacent rotor disks, which ensure that the individual rotor disks are seated in exactly the same position relative to one another on the drive shaft. This is important in the assembly of the rotor because the provided in the outer peripheral portion through holes must be exactly aligned axially so that later the waves can be easily inserted for pendulum suspension of the hammers. It is also proposed to replace the centering pins with temporary longitudinal rods until the rotor disks are finally connected to one another by weld seams.
  • a device for crushing of waste which has a horizontally disposed within a housing rotor.
  • the rotor consists of two solid cylindrical parts, which are non-rotatably mounted on a drive shaft and are combined by means of axial clamping rods to form a whole.
  • axial clamping rods In the lateral surface of the rotor depressions are arranged for the pivotable attachment of rackets, which get in the course of rotation, the crushing of the garbage.
  • the object of the invention is to improve known rotors and devices in view of the disadvantages described above, in particular, a rotor according to the invention should allow a compact design, a precise crushing and safe and economical operation.
  • the power transmission from the drive shaft to the rotor disks is generated by a frictional connection.
  • the available frictional surface and the contact pressure in the contact surface can be adjusted in this way by suitable design selection, the maximum transferable force.
  • the maximum transferable force corresponds to the force that does not cause any damage to the comminution device in the event of a sudden change in the speed of the rotor. If this force is exceeded, for example, if foreign matter in the feed material block the rotor, so it comes thanks to the invention even before damage to the rotor to a slip between the Rotor disks and the drive shaft. This has the enormous advantage for the operator of devices according to the invention to considerably reduce the risk of damage.
  • the invention additionally comprises force transmitting elements acting in the tangential direction and axially acting clamping elements to the drive torque in precise relative position of the rotor disks to each other from one rotor disk to the next Rotor disc to be transferred.
  • the frictional engagement elements of a device according to the invention are advantageously arranged in the interior of the outer rotor disks, so that a minimum overall length results in the axial direction, which overall is conducive to a compact construction of devices according to the invention.
  • drive shafts according to the invention can be dispensed with complementary form-fitting surfaces to achieve a positive connection between the drive shaft and rotor discs, it is possible according to the invention drive shafts simpler, faster and thus more economical to manufacture.
  • the frictional engagement elements consist of commercially available clamping sets. These therefore further contribute to the reduction of manufacturing costs.
  • the size of the forces to be transmitted can be preset.
  • the clamping elements acting in the axial direction are formed by a shaft nut which, when it is screwed onto the shaft, tensions the rotor disks against an annular stop or a further shaft nut at the other end of the shaft.
  • An especially preferred embodiment of the invention provides axial clamping anchors that penetrate the rotor disks in the axial direction and thus in the interior of the rotor lie. Since the clamping anchors can be countersunk in the anchoring region in the end faces of the rotor, a minimum length of the rotor is favored here, so that this embodiment can be combined in a special way with the above-mentioned clamping sets in order to achieve a compact design.
  • the power transmission elements each consist of a three-dimensional body, which is arranged in one of two adjacent rotor disks in the contact joint complementarily shaped cavity. In this way, a toothing of two rotor disks is achieved in order to enable the transmission of the drive torque.
  • the three-dimensional body can be formed, for example, by a bolt, a disk or a strip.
  • FIGS. 1a . 2a and 2b show a first embodiment of a rotor 1 according to the invention, for example, is suitable for effecting the comminution of feed material of various kinds within a shredder or a granulator.
  • a suitable for the use of the rotor 1 device is for example in the DE 102006056542 A1 whose contents are to be considered by reference as having been disclosed.
  • FIG. 1a shown rotor 1 has a continuous drive shaft 2 with a longitudinal axis 3, the free ends are intended to be rotatably supported in axle bearings of a device, not shown.
  • the drive shaft 2 is acted upon by a drive torque for generating a rotational movement.
  • the end faces 5 are under contact with each other.
  • the rotor disks 4 have a circular shape, with a central opening 6, which corresponds approximately to the outer diameter of the drive shaft 2 and thus allows the seat of the rotor disks 4 on the shaft 2.
  • the outer circumference 7 of the rotor discs 4 is provided with not shown processing tools, which may be formed for example of knives, strips, checker plates, fangs, shearing tools, pendulum or rigid hammers and the like.
  • FIG. 1a It can be seen that the individual rotor discs 4 are axially clamped together via a plurality of tie rods 8 to form a rigid unit, wherein the tie rods 8 are arranged axially parallel in a uniform circumferential distance on a circumferential circle lying concentrically to the longitudinal axis 3.
  • the radial distance of the tie rods 8 to the longitudinal axis 3 may be such that the tie rods 8 are located centrally between the edge of the opening 6 and the outer periphery 7.
  • the tie rods 8 are in the outer half of the rotor disks 4.
  • the necessary for generating the clamping force clamping nuts 9 lie completely in recesses on the rotor end faces 10th
  • FIG. 1b shows that the inner rotor discs 4 'may also be formed annular disc-shaped with a large central opening 6', that the rotor discs 4 'only with their flat end faces 5' together and without direct contact with the drive shaft 2.
  • Such a rotor 1 draws through material and weight savings and easier assembly.
  • force transmission elements are respectively arranged in the contact joints of two rotor disks 4, 4'.
  • FIGS. 3a to 3c show two different embodiments of suitable power transmission elements.
  • the force transmission elements of holes 11 are formed, which are introduced from the end faces 5, 5 'in the axial direction in the rotor disks 4, 4'.
  • the holes 11 of two adjacent rotor disks 4, 4 ' are axially opposite.
  • bolts 12 are inserted form-fitting as power transmission elements.
  • the power transmission elements according to FIG. 3b consist of circular recesses 13 in the end faces 5, 5 'of the rotor disks 4, 4', which in turn are axially opposite each other in pairs.
  • the frictional connection is completed by means of disks 12, which completely completes the cavity formed by two recesses 13 fill out.
  • the disks 12 can be slightly tapered from the center plane, starting at their free end, in order to facilitate assembly or disassembly.
  • the power transmission takes place via the peripheral surfaces of the recesses and discs, which cooperate for this purpose.
  • FIG. 2b A possible arrangement of the force transmission elements with respect to the longitudinal axis 3 is made Fig. 2b seen.
  • the power transmission elements can be located with the tie rods 8 on a circumferential circle and each can be arranged centrally between two tie rods 8.
  • the force transmission elements consist of annular grooves in the end faces 5, 5 ', which cooperate with complementary shaped rings.
  • the advantage of this variant lies in the possibility of being able to arrange the annular grooves and rings in each case concentrically around a tie rod 8, which results in a very space-saving design, which is particularly important for rotors with small diameters.
  • the force transmission elements consist of radially extending grooves in the end face of a rotor disk, engage in the complementarily shaped radially extending strips in the associated end face of an adjacent rotor disk.
  • FIG. 4a shows the relevant area in a partial section.
  • the rotor disks 4 each have a recess 16 in the region of the opening 6 starting from the rotor end side 10.
  • the recess 16 is for receiving one or determined a plurality of clamping sets 15.
  • Each clamping set 15 comprises a pressure sleeve 17 with an outer pressure ring 18, which rests against the rotor disk 4 and a radially spaced inner pressure ring 19, which rests on the circumference of the drive shaft 2.
  • Both pressure rings 18 and 19 have over their axial length a conically thickened in the central region wall, so that there is a double concave annular space.
  • FIG. 4b shown embodiment of a rotor 1 differs from the previously described only by the use of two clamping sets 15, which are arranged one behind the other in the axial direction.
  • two clamping sets 15 By using a plurality of clamping sets 15, it is possible to increase the maximum transmissible driving force from the drive shaft 2 to the rotor disk 4.

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

Claims (14)

  1. Rotor pour un dispositif de broyage de matériau d'alimentation avec un arbre d'entraînement (2) sur lequel sont disposés un nombre prédéterminé de disques de rotor (4, 4') solidaires en rotation sur la circonférence (7) desquels sont disposés des outils de broyage, caractérisé en ce qu'entre les disques de rotor (4, 4') formant les extrémités axiales du rotor (1) et l'arbre d'entraînement (2) sont disposés des éléments de connexion par friction transmettant un couple et en ce que dans les surfaces de contact de deux disques de rotor (4, 4') adjacents sont disposés des éléments de transmission de force et en ce que les disques de rotor (4, 4') sont serrés entre eux par des éléments de serrage à action axiale.
  2. Rotor selon la revendication 1, caractérisé en ce que les éléments de connexion par friction comprennent au moins un jeu de serrage (15).
  3. Rotor selon la revendication 1 ou 2, caractérisé en ce que plusieurs jeux de serrage (15) pour le préréglage du couple à transmettre sont disposés axialement l'un derrière l'autre.
  4. Rotor selon l'une des revendications 1 à 3, caractérisé en ce que les éléments de serrage sont formés de tirants d'ancrage (8) qui pénètrent axialement les disques de rotor (4, 4').
  5. Rotor selon la revendication 4, caractérisé en ce que les tirants d'ancrage (8) sont disposés sur un cercle circonférentiel commun autour de l'axe longitudinal (3).
  6. Rotor selon la revendication 5, caractérisé en ce que les tirants d'ancrage (8) sont disposés selon un écart radial par rapport à l'axe longitudinal (3) tel que les tirants d'ancrage (8) se situent au milieu entre la circonférence extérieure (7) et le bord de l'ouverture centrale (6) des disques de rotor (4, 4').
  7. Rotor selon l'une des revendications 1 à 6, caractérisé en ce que les têtes des tirants d'ancrage (8) sont noyées dans les faces frontales (5) des disques de rotor (4) terminaux.
  8. Rotor selon l'une des revendications 1 à 3, caractérisé en ce que les éléments de serrage comprennent un écrou d'arbre à une extrémité du rotor (1) et une butée axiale à l'autre extrémité du rotor (1) et que les disques de rotor (4, 4') peuvent être serrés contre la butée axiale à l'aide de l'écrou d'arbre.
  9. Rotor selon l'une des revendications 1 à 8, caractérisé en ce que les éléments de transmission de force comprennent des axes (12), des anneaux, des listeaux ou des disques (14) qui, partant des surfaces de contact entre deux disques adjacents (4, 4') s'étendent dans des encoches complémentaires (11, 13) dans l'un comme dans l'autre des disques de rotor (4, 4').
  10. Rotor selon la revendication 9, caractérisé en ce que les éléments de transmission de force se rétrécissent en direction de leurs extrémités axiales.
  11. Rotor selon la revendication 9 ou 10, caractérisé en ce que les éléments de transmission de force sont disposés sur un cercle circonférentiel commun autour de l'axe longitudinal (3).
  12. Rotor selon l'une des revendications 9 à 11, caractérisé en ce que les éléments de transmission de force se situent, en direction tangentielle, respectivement au milieu de deux tirants d'ancrage (8) adjacents.
  13. Rotor selon l'une des revendications 9 à 11, caractérisé en ce que les éléments de transmission de force ont une forme annulaire et entourent respectivement un tirant d'ancrage (8) concentriquement.
  14. Dispositif pour le broyage d'un matériau d'alimentation avec une unité de broyage caractérisé en ce que l'unité de broyage comprend un rotor (1) conformément aux revendications 1 à 13.
EP09002956.2A 2008-03-07 2009-03-02 Rotor et dispositif de broyage de matériaux de chargement Active EP2098297B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008013232A DE102008013232A1 (de) 2008-03-07 2008-03-07 Vorrichtung zum Zerkleinern von Aufgabegut mit einem Rotor

Publications (3)

Publication Number Publication Date
EP2098297A2 EP2098297A2 (fr) 2009-09-09
EP2098297A3 EP2098297A3 (fr) 2011-06-15
EP2098297B1 true EP2098297B1 (fr) 2015-01-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09002956.2A Active EP2098297B1 (fr) 2008-03-07 2009-03-02 Rotor et dispositif de broyage de matériaux de chargement

Country Status (5)

Country Link
US (1) US8066212B2 (fr)
EP (1) EP2098297B1 (fr)
CA (1) CA2657441C (fr)
DE (1) DE102008013232A1 (fr)
DK (1) DK2098297T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015012588A1 (de) 2015-09-29 2017-03-30 Khd Humboldt Wedag Gmbh Rotor für eine Zerkleinerungsvorrichtung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102689364B (zh) * 2012-06-15 2014-12-10 莱州大正石材机械有限公司 一种多锯片锯石机专用锯体
CN104722383A (zh) * 2013-12-24 2015-06-24 何石柏 一种可以随意更换耐磨合金锤的破碎机磙子
AT15563U1 (de) * 2016-11-18 2018-01-15 Eschlböck-Maschinenbau Ges M B H Vorrichtung zum Zerspanen von Holz
CN112871274B (zh) * 2020-12-22 2022-06-17 周文兵 一种破碎机对辊及工业石料破碎机
CN114669362B (zh) * 2022-04-05 2023-09-01 武汉华材表面科技有限公司 一种辊面满面柱钉的辊压机辊套及其制造方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015012588A1 (de) 2015-09-29 2017-03-30 Khd Humboldt Wedag Gmbh Rotor für eine Zerkleinerungsvorrichtung
WO2017055365A1 (fr) 2015-09-29 2017-04-06 Khd Humboldt Wedag Gmbh Rotor pour un dispositif de broyage

Also Published As

Publication number Publication date
DE102008013232A1 (de) 2009-09-17
US20090224089A1 (en) 2009-09-10
CA2657441C (fr) 2012-05-15
EP2098297A3 (fr) 2011-06-15
DK2098297T3 (en) 2015-04-27
CA2657441A1 (fr) 2009-09-07
EP2098297A2 (fr) 2009-09-09
US8066212B2 (en) 2011-11-29

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