EP2640521B1 - Rohrmühle - Google Patents

Rohrmühle Download PDF

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Publication number
EP2640521B1
EP2640521B1 EP11701970.3A EP11701970A EP2640521B1 EP 2640521 B1 EP2640521 B1 EP 2640521B1 EP 11701970 A EP11701970 A EP 11701970A EP 2640521 B1 EP2640521 B1 EP 2640521B1
Authority
EP
European Patent Office
Prior art keywords
concrete element
stator yoke
tube mill
electric motor
rotor
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
EP11701970.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2640521A1 (de
Inventor
Horst KÜMMLEE
Peter Petereit
Frank Seibicke
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP2640521A1 publication Critical patent/EP2640521A1/de
Application granted granted Critical
Publication of EP2640521B1 publication Critical patent/EP2640521B1/de
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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/24—Driving mechanisms

Definitions

  • the invention relates to a tube mill.
  • regrind such as Ore chunks are often used in tube mills.
  • the material to be ground is placed in a tubular, rotatably arranged body and, upon rotation of the body, either by its own gravity or by adding ground elements, e.g. Balls, grind.
  • the axis of rotation of the body has a horizontal orientation.
  • the mill body is designed as a rotor of an electric motor, which further comprises a stator with at least two different excitation systems.
  • a tube mill wherein the tube mill has a body rotatably arranged about a rotation axis, wherein ground material for comminution into the body einbringbar ist, wherein the tube mill for rotating driving the body comprises an electric motor, wherein the electric motor having a rotatably connected to the body connected to the rotor body and a rotor disposed around the rotor Statorjoch, wherein the tube mill at least a half of the circumference of Statorsjochs having circumferential concrete element, wherein the stator yoke is connected to the concrete element such that forces acting on the stator yoke are transmitted to the concrete element.
  • the invention makes it possible to reduce deformations of the stator yoke of the electric motor which occur during operation of the electric motor when the electric motor is arranged around the body of the tube mill and drives the body of the tube mill. Furthermore, the invention also allows the reduction of static deformation of the stator yoke.
  • the concrete element at the desired site of the tube mill can be cast in concrete, very large tube mills can be realized and assembled at the site in a simple manner.
  • the concrete element consists of several segments, because then the concrete element can be assembled in a simple manner at the site of the mill of the segments.
  • the segments are for this purpose e.g. connected by screw connections.
  • the concrete element is integrally formed, since then the concrete element is particularly stable and resilient.
  • the concrete element is arranged circumferentially around the entire circumference of the stator yoke, since then the vibrations of the stator yoke are particularly greatly reduced.
  • the invention proves to be particularly applicable to large tube mills, i. Tube mills, whose driving electric motor has an electric power of greater than 5 MW, as advantageous.
  • FIG. 1 is a rear view of a tube mill 1 according to the invention is shown in the form of a schematic perspective view.
  • the tube mill 1 has a tubular order a rotation axis R rotatably arranged body 4, wherein the rotation axis R has a horizontal orientation.
  • FIG. 2 is shown in the form of a schematic perspective view of a front view of the tube mill 1 according to the invention. Same elements are in FIG. 2 provided with the same reference numerals as in FIG. 1 ,
  • ground material for comminution in the body 4 can be introduced via an opening.
  • the tube mill 1 for rotationally driving the body 4 has an electric motor 2 which directly, i. without interposed between the electric motor 2 and body 4 gear, the body 4 rotatably drives and is designed as a ring motor.
  • the electric motor 2 has a housing 8 and winding shields 20. Furthermore, the electric motor 2 on cooler, with the sake of clarity, only a cooler 9 in FIG. 1 is provided with a reference numeral. Furthermore, the tube mill 1 according to the invention on supporting elements 5, on which the body 4 is rotatably mounted.
  • the electric motor 2 has a stationary arranged stator which comprises the dormant arranged essential elements of the electric motor 2 and a rotor which comprises the rotating about the rotation axis R elements of the electric motor 2, on.
  • the essential elements of the stator are attached directly or indirectly to a concrete element 3.
  • FIG. 3 is the concrete element 3 and the stator 7 of the electric motor 2 shown in the form of a schematic perspective view. Same elements are in FIG. 3 provided with the same reference numerals as in FIG. 1 and FIG. 2 ,
  • FIG. 4 is the concrete element 3 and the stator 7 of the electric motor 2 without housing 8, cooler 9 and winding shields 20 shown in the form of a schematic perspective view.
  • the stator 7 of the electric motor 2 has as essential Element on an annular stator yoke 10.
  • the stator yoke 10 consists in the context of the embodiment of Statorjochsegmenten, wherein for the sake of clarity, only two Statorjochsegmente 10a and 10b are provided with a reference numeral.
  • the stator yoke segments are joined together to form the annular stator yoke 10.
  • the circumference of the stator yoke 10 is in FIG. 4 provided with the reference symbol U.
  • the stator yoke 10 may be formed solid or, for example, consist of successively arranged electrically mutually insulated sheets arranged.
  • the stator yoke 10 is made of a magnetically conductive material such as a ferromagnetic material (eg, iron).
  • Statorjoch 10 has recesses in which a stator winding is arranged, the sake of clarity in FIG. 4 not shown.
  • the stator winding generates a magnetic field which rotatably drives the rotor of the electric motor 2 and thus the body 4 attached to the rotor of the electric motor.
  • the tube mill 1 has the concrete element 3 revolving around at least half of the circumference U of the stator yoke 10, the stator yoke 10 being connected to the concrete element 3 in such a way that forces acting on the stator yoke 10 are transmitted to the concrete element 3 , As a result, a good reduction in the vibrations of the stator yoke is achieved.
  • a very good reduction of the vibrations is achieved when the concrete element 3 is arranged circumferentially around at least three quarters of the circumference of the stator yoke.
  • An optimal reduction of the vibrations is achieved if, as shown in the exemplary embodiment, the concrete element 3 is arranged circumferentially around the entire circumference U of the stator yoke 10.
  • the distance AS extending in the radial direction RR from the concrete element 3 to the axis of rotation R is preferably constant, i. the recess for receiving the stator yoke 10 through the concrete element preferably has a part-circular or circular shape.
  • the concrete element 3 is made of concrete or reinforced concrete.
  • the concrete element 3 is constructed of reinforced concrete, i. it has a steel reinforcement arranged inside the concrete element.
  • the concrete element 3 absorbs the forces transmitted to the stator yoke 10 during operation of the tube mill by the rotor of the electric motor and discharges them into the ground.
  • a very rigid supporting structure preferably having a large mass, is realized, which can absorb large forces without being excited to vibrate.
  • the concrete element may, as in the embodiment, be integrally formed, or else, as in FIG. 4 indicated by dashed lines, be composed of several segments, the segments may be bolted together, for example.
  • FIG. 4 are the segment boundaries of the segments 3a, 3b, 3c and 3d, 3e, from which the concrete element 3 may consist, for example, indicated by dashed lines.
  • channels are arranged in the concrete element 3 through the concrete element.
  • fans are arranged.
  • FIG. 4 For the sake of clarity, only one channel 11 and one fan 12 are provided with a reference numeral.
  • FIG. 5 is shown in a form of a schematic representation of a section through the tube mill 1 according to the invention.
  • the same elements are provided with the same reference numerals as in FIG. 1 to FIG. 4 ,
  • the body 4 has a lateral surface 4c and two funnel-shaped end parts 4a and 4b.
  • the body 4 Grist 13 for example, through the opening 6, can be introduced.
  • FIG. 6 is the in FIG. 5 Area marked A is shown enlarged.
  • the same elements are provided with the same reference numerals as in 1 to FIG. 5 , It should be noted that, for the sake of clarity, the steel reinforcement of the concrete element 3 (reinforced concrete) arranged in the interior of the concrete element 3 FIG. 5 and FIG. 6 not shown.
  • the housing 8 of the electric motor 2 is also attached to the concrete element 3 in the context of the embodiment. It should be noted here that in FIG. 6 the fan 12 and the radiator 9 are shown symbolically very highly schematized. The outer terminals of the radiator 9 are connected to cooling lines through which a cooling liquid is pumped through the radiator 9.
  • the air is moved by the electric motor 2 during operation of the fan 12 and flows past the radiator 9, where it is cooled. Accordingly, the air is pumped through the other channels of the concrete element, by means of the fans arranged in the channels.
  • the stator yoke 10 is connected to the concrete element 3 in such a way that forces acting on the stator yoke 10 are transmitted to the concrete element 3. The forces are thereby transmitted to the stator yoke 10 during operation of the tube mill 1 from the rotor 18 via the magnetic field acting between the rotor 18 and the stator yoke 10 and transmitted from the stator yoke 10 to the concrete element 3.
  • the stator yoke 10 is mechanically or directly connected to the concrete element 3 for this purpose. If the stator yoke 10 is directly connected to the concrete element 3, then the stator yoke 10 is directly connected to the concrete element by means of e.g. Fastened screw.
  • stator yoke 10 is indirectly connected to the concrete element 3, then the stator yoke 10 is connected to the concrete element 3 via at least one fastening element.
  • the fastening element can in this case e.g. in the form of a steel ring arranged between the stator yoke and the concrete element, the stator yoke being formed by means of e.g. Screw is fastened to the steel ring and the steel ring, e.g. is fastened by means of screw connections on the concrete element.
  • stator yoke 10 is fastened to the concrete element 3 via fastening elements 14a, 14b, 14c.
  • the fastening element 14a is designed as a steel ring encircling the stator yoke 10, which is fastened to the concrete element 3.
  • the stator yoke 10 has recesses in which a stator winding 21 is arranged, wherein in FIG. 6 only the laterally protruding from the stator yoke 10 winding heads of the stator winding 21 can be seen.
  • the electric motor 2 has a rotor 18, which comprises the elements of the electric motor 2 rotating about the rotation axis R.
  • the rotor 18 has as an essential element on a rotor yoke 16, which consists of a magnetically conductive material, such as a ferromagnetic material, and may be constructed solid or arranged one behind the other against each other electrically insulated sheets.
  • the rotor yoke 16 has recesses in which a rotor winding 17 is arranged, wherein in FIG.
  • the rotor 18 is direct, i. without intermediate gear, connected to the body 4.
  • the electric motor 2 is thus designed as a so-called ring motor.
  • the concrete element does not necessarily, as in the embodiment, a rectangular outer contour must have, but may have any outer contour.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Crushing And Grinding (AREA)
EP11701970.3A 2011-01-25 2011-01-25 Rohrmühle Active EP2640521B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/050950 WO2012100818A1 (de) 2011-01-25 2011-01-25 Rohrmühle

Publications (2)

Publication Number Publication Date
EP2640521A1 EP2640521A1 (de) 2013-09-25
EP2640521B1 true EP2640521B1 (de) 2014-10-29

Family

ID=44625070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11701970.3A Active EP2640521B1 (de) 2011-01-25 2011-01-25 Rohrmühle

Country Status (9)

Country Link
US (1) US9233373B2 (pt)
EP (1) EP2640521B1 (pt)
CN (1) CN103338866B (pt)
AU (1) AU2011357265B2 (pt)
BR (1) BR112013018372B1 (pt)
CA (1) CA2825449C (pt)
ES (1) ES2523775T3 (pt)
MX (1) MX2013008584A (pt)
WO (1) WO2012100818A1 (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011088660A1 (de) * 2011-12-15 2013-06-20 Siemens Aktiengesellschaft Elektrische Maschine mit Gehäuse- und Statorsegmenten
FR2994107B1 (fr) * 2012-08-03 2015-06-19 Ge Energy Power Conversion Technology Ltd Appareil a tambour rotatif comprenant un tambour rotatif et au moins un moteur electrique d'entrainement du tambour, avec un stator s'etendant en regard d'une partie seulement de la circonference du tambour
CN104190507A (zh) * 2014-09-04 2014-12-10 河南工业大学 一种自驱动式锉磨机
EP3029806A1 (de) 2014-12-05 2016-06-08 Siemens Aktiengesellschaft Bauteil für eine elektrische Maschine
EP3046225A1 (de) 2015-01-16 2016-07-20 Siemens Aktiengesellschaft Elektrische rotierende Maschine mit einseitiger Kühlung und Verfahren zur einseitigen Kühlung
EP3280038A1 (de) 2016-08-03 2018-02-07 Siemens Aktiengesellschaft Antriebsvorrichtung

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1458120A (en) * 1918-06-08 1923-06-05 Allischalmers Mfg Company Magnet and dynamo-electric-machine structure
DE1179629B (de) * 1962-05-12 1964-10-15 Siemens Ag Gehaeuse fuer elektrische Maschinen, insbesondere Elektromotoren, aus Zementmoertel oder Beton
GB1381583A (en) * 1973-04-06 1975-01-22 Smidth & Co As F L Rotary drums
CN2150662Y (zh) 1993-01-16 1993-12-22 天津市起重电机厂 耐振电动机
JPH0723541A (ja) 1993-06-30 1995-01-24 Toshiba Corp 回転子巻線端部の支持固定装置
DE10114294A1 (de) * 2001-03-23 2002-09-26 Kloeckner Humboldt Wedag Antriebseinrichtung für eine Rohrmühle
GB0113700D0 (en) 2001-06-06 2001-07-25 Evolving Generation Ltd Electrical machine and rotor therefor
US6719227B2 (en) * 2001-11-16 2004-04-13 General Electric Canada Inc. Grinding mill and methods for fabricating same
JP4655595B2 (ja) 2004-11-17 2011-03-23 パナソニック株式会社 電動機
DE102006017933B4 (de) 2006-04-18 2008-01-24 Siemens Ag Elektrische Maschine mit Magnetlager und Fanglager
DE102006019873B3 (de) 2006-04-28 2007-10-18 Siemens Ag Fanglager für eine elektrische Maschine sowie elektrische Maschine mit zumindest einem derartigen Fanglager
DE102007005131B3 (de) 2007-02-01 2008-01-31 Siemens Ag Ringmotor
EP2061137A1 (de) 2007-11-19 2009-05-20 Siemens Aktiengesellschaft Vorrichtung zur Maschinenanbindung eines Scheibenmotors

Also Published As

Publication number Publication date
CN103338866B (zh) 2015-05-13
CA2825449A1 (en) 2012-08-02
BR112013018372B1 (pt) 2020-07-14
US9233373B2 (en) 2016-01-12
MX2013008584A (es) 2013-10-07
EP2640521A1 (de) 2013-09-25
AU2011357265B2 (en) 2015-04-02
US20130306773A1 (en) 2013-11-21
AU2011357265A1 (en) 2013-08-01
BR112013018372A2 (pt) 2016-10-11
ES2523775T3 (es) 2014-12-01
WO2012100818A1 (de) 2012-08-02
CN103338866A (zh) 2013-10-02
CA2825449C (en) 2015-10-06

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