EP2653231A1 - Broyeur à cylindres et procédé de fixation d'une position d'un cylindre dans un broyeur à cylindres - Google Patents

Broyeur à cylindres et procédé de fixation d'une position d'un cylindre dans un broyeur à cylindres Download PDF

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Publication number
EP2653231A1
EP2653231A1 EP12164952.9A EP12164952A EP2653231A1 EP 2653231 A1 EP2653231 A1 EP 2653231A1 EP 12164952 A EP12164952 A EP 12164952A EP 2653231 A1 EP2653231 A1 EP 2653231A1
Authority
EP
European Patent Office
Prior art keywords
roller
supporting arm
frame
fixing member
roller crusher
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.)
Withdrawn
Application number
EP12164952.9A
Other languages
German (de)
English (en)
Inventor
Julio Cesar Osti da Silva
Paulo Barscevicius
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.)
Metso Brasil Industria e Comercio Ltda
Original Assignee
Metso Brasil Industria e Comercio Ltda
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 Metso Brasil Industria e Comercio Ltda filed Critical Metso Brasil Industria e Comercio Ltda
Priority to EP12164952.9A priority Critical patent/EP2653231A1/fr
Priority to CN2013201995408U priority patent/CN203316181U/zh
Priority to PCT/IB2013/053096 priority patent/WO2013156965A1/fr
Publication of EP2653231A1 publication Critical patent/EP2653231A1/fr
Withdrawn legal-status Critical Current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
    • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
    • 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

Definitions

  • the present invention relates to a roller crusher comprising at least one roller mounted on a shaft.
  • the present invention further relates to a method of fixing a position of a roller in a roller crusher.
  • a common roller crusher such as that disclosed in EP-516 952 , consists of two essentially horizontal rollers, each mounted on a respective shaft.
  • the shaft is in turn supported by a frame, such that the rollers are placed at a suitable distance from each other.
  • the rollers rotate in opposite directions, towards each other, such that material to be ground is crushed and ground in the gap between the rollers.
  • this gap is automatically adjustable depending on the flow of material to be ground.
  • the rollers are worn differently depending on if they float, as mentioned above, or are non-pivotably secured to the frame.
  • the rollers need to be exchanged every now and then. This exchange is often complicated, both due to the mounting procedure and due to the rollers themselves.
  • the rollers are difficult to manage due to their heavy weight and large size.
  • a particular object of the invention is to provide a roller crusher, in which it is easy to remove a roller for exchanging or reconditioning.
  • Another object of the invention is to provide a roller crusher, in which it is possible to choose if a particular roller is to be fixed or floating.
  • a further object of the invention is to provide a method which makes it possible to fix a position of a roller in a roller crusher.
  • Yet another object is to provide a method which simplifies removal of a roller from a roller crusher.
  • Still another object is to provide a method which makes it possible to extend the useful life of a roller in a roller crusher.
  • a roller crusher comprising:
  • said first supporting arm comprises a first hole
  • said frame comprises a second hole
  • said first fixing member being arranged to be inserted in said first and second holes, when said holes are aligned with each other, for locking said first supporting arm in said fixed position.
  • aligned implies that the first and second holes are placed in such relation to each other that the fixing member is insertable through both holes. If the fixing member is straight, the holes will, when aligned, have to be placed with their central axes along a common straight line. However, if a curved fixing member is used, the holes need not be placed exactly on a common straight line.
  • the first supporting arm may be arranged to be locked in a vertical direction when said first and second holes are aligned and said first fixing member is inserted in said first and second holes. If the first supporting arm is locked in a direction such that a centre of gravity of the roller is located on a vertical axis extending through the point of attachment of the first supporting arm to the frame, the forces acting on the fixing member may be reduced to purely vertical forces from the gravity acting on the roller, enabling a simple design of the fixing member. If the supporting arm forms a straight line from the shaft to the point of attachment to the frame, then this is achieved if the supporting arm is locked in the vertical direction.
  • the first fixing member is arranged in said frame, said first supporting arm being arranged to abut said first fixing member for locking said first supporting arm in the fixed position. In this manner, there is no need to form a hole through the supporting arm. This may be particularly useful for locking the roll in a position in which it is pivoted such that its centre of gravity lies outside the point of attachment of the supporting arm to the frame.
  • the frame may comprise a second hole, said first fixing member being arranged to be inserted in said second hole. This may be a simple way of arranging the first fixing member on the frame, which makes it possible to easily remove the fixing member if so desired.
  • the roller crusher comprises two rollers arranged in parallel, between them forming a crushing gap.
  • the roller crusher may be a so called high pressure roller crusher or high pressure grinding roller.
  • the roller crusher further comprises a second supporting arm at a first end being rotatably attached to said shaft, and at a second end rotatably attached to said frame.
  • the second supporting arm may be attached to the same end of the roller shaft as the first supporting arm, or to the opposite end. The use of a second supporting arm may stabilize the roller in the fixed position.
  • the second supporting arm comprises a third hole
  • said frame comprises a fourth hole
  • said roller crusher further comprising a second fixing member adapted to be inserted in said third and fourth holes, when said holes are aligned with each other, for locking said supporting arm in a fixed position. In this manner, it is possible to fix the roller in a position chosen from a plurality of possible positions.
  • the roller may extend horizontally during crushing operation.
  • the method further comprises the steps of forming a first hole extending through said first supporting arm, forming a second hole extending through said frame, aligning said first and second holes (6, 7) by pivoting said first supporting arm, inserting the first fixing member through said first and second holes when they are aligned, thereby locking said first supporting arm in said fixed position.
  • the method may be embodied in the same ways as the roller crusher according to the first aspect.
  • the roller crusher 1 has two rollers 2, each mounted on a respective shaft 3.
  • the rollers 2 are arranged in parallel and extend essentially horizontally.
  • a supporting arm 4 is connected between the shaft 3 of the roller 2 and a frame 5 of the roller crusher 1.
  • the supporting arm 4 is rotatably connected to the shaft 3 of the roller 2, and at the other end, the supporting arm 4 is rotatably connected to the frame 5.
  • a first hole 6 is provided through the supporting arm 4.
  • a second hole 7 is provided through the frame 5.
  • the roller 2 When one of the rollers 2 needs to be exchanged or removed for reconditioning, the roller 2 has to be fixed in position in order to be manageable. To do this, the roller 2 to be fixed is moved such that the supporting arm 4 is vertically oriented, thereby aligning the first hole 6 in the supporting arm 4 with the second hole 7 in the frame 5. A fixing member 8 is inserted in the holes 6, 7, thereby fixing the supporting arm 4 in the vertical direction. Thus, the centre of gravity of the roller 2 is positioned on a vertical axis extending through the point of attachment of the first supporting arm 4 to the frame 5.
  • the fixing member 8 may be in the form of a bolt, optionally securable by a nut.
  • roller 2 Once the roller 2 is fixed in position, it may be gripped by a suitable lifting device and removed for exchanging or reconditioning.
  • roller crusher particularly in a so called high pressure roller crusher or high pressure grinding roller
  • one of the rollers is normally fixed and the other floating, so as to allow adjusting the width of the gap between the rollers 2.
  • both of the two rollers 2 are provided with supporting arms 4. However, if one and the same roller is always supposed to be fixed, it will be enough to arrange a supporting arm only on the other roller.
  • a second supporting arm 4' is arranged at the other end of each roller 2.
  • the use of such an additional supporting arm 4' adds to the stability of the arrangement.
  • the structure of the holes 6', 7' and the fixing member 8' is the same as that shown in Fig. 2 , only reversed.
  • the working principle is the same as that discussed above.
  • Fig. 5 a detail of another embodiment is shown.
  • a protruding pin 8" extends from the frame 5.
  • This pin 8" is useful for locking a roller in a position in which it is pivoted slightly away from the other roller of the roller crusher.
  • the supporting arm 4 will abut the pin 8", thereby locking the supporting arm in this position, since the weight of the roller may ensure that the supporting arm cannot inadvertently pivot away from the pin 8".
  • a first and second hole 6, 7 are provided for inserting a fixing member 8 for locking the roll in a position in which the centre of gravity of the roller is aligned with the point of attachment of the supporting arm 4 to the frame, and a pin 8" is provided for locking the roller 2 in a position in which it is pivoted away from or towards the other roller.
  • the pin 8" may be attached to the frame 5, e.g., by welding, but may instead be in the form of a bolt inserted in a hole in the frame, optionally securable by a nut.
  • a protruding pin attached to the frame may also be combined with a fixing member in the form of a bolt inserted in a second hole in the frame adjacent the protruding pin. Then, the supporting arm may be fixed between the pin and the bolt.
  • roller crushers having two parallel rollers have been described in the context of roller crushers having two parallel rollers. However, it is applicable also to other roller crushers, such as roller crushers having only one roller working in conjunction with a stationary member, such as a plate. It is also applicable to roller crushers having rollers oriented in directions other than horizontal, and to roller crushers having three or more rollers.
  • the relative positions of the first hole in the supporting arm and the second hole in the frame may be chosen accordingly.
  • the fixing member is in the form of a threaded bolt, securable by a nut.
  • the fixing member may instead be a smooth bolt or pin, or take any other form suitable for inserting in the first and second holes when they are aligned.
  • the supporting arm, the second hole in the frame, and the fixing member may be arranged in the roller crusher during manufacture, but may just as well be added on an existing roller crusher.
  • the supporting arm need not be straight, extending directly from the shaft to the frame, but could be angled, e.g., L-shaped. If the supporting arm is angled, it will not be vertically oriented when the centre of gravity of the roll is aligned with the point of attachment of the supporting arm to the frame. Still, if the supporting arm is attached to the shaft of the roller, an imaginary line extending from the attachment to the shaft to the attachment to the frame will be vertical when the roll is fixed in the position in which the centre of gravity of the roller is aligned with the point of attachment to the frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP12164952.9A 2012-04-20 2012-04-20 Broyeur à cylindres et procédé de fixation d'une position d'un cylindre dans un broyeur à cylindres Withdrawn EP2653231A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP12164952.9A EP2653231A1 (fr) 2012-04-20 2012-04-20 Broyeur à cylindres et procédé de fixation d'une position d'un cylindre dans un broyeur à cylindres
CN2013201995408U CN203316181U (zh) 2012-04-20 2013-04-19 辊式破碎机
PCT/IB2013/053096 WO2013156965A1 (fr) 2012-04-20 2013-04-19 Broyeur à cylindres, et procédé de détermination d'une position d'un cylindre dans un broyeur à cylindres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12164952.9A EP2653231A1 (fr) 2012-04-20 2012-04-20 Broyeur à cylindres et procédé de fixation d'une position d'un cylindre dans un broyeur à cylindres

Publications (1)

Publication Number Publication Date
EP2653231A1 true EP2653231A1 (fr) 2013-10-23

Family

ID=48536966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12164952.9A Withdrawn EP2653231A1 (fr) 2012-04-20 2012-04-20 Broyeur à cylindres et procédé de fixation d'une position d'un cylindre dans un broyeur à cylindres

Country Status (3)

Country Link
EP (1) EP2653231A1 (fr)
CN (1) CN203316181U (fr)
WO (1) WO2013156965A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112021021956A2 (pt) * 2019-05-09 2021-12-21 Metso Outotec Usa Inc Kit de recondicionamento de distribuidor de deflexão, método para montar um kit de recondicionamento de distribuidor de deflexão e britador de rolos

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449344A1 (de) * 1974-10-17 1976-04-22 Ver Flugtechnische Werke Oelmahlwerk mit einer automatischen stelleinrichtung
US4619408A (en) * 1983-02-25 1986-10-28 Sangati S.P.A. Control system for grinding mill
US5060874A (en) 1990-08-16 1991-10-29 Mclanahan Corporation Crusher
EP0516952A1 (fr) 1991-05-28 1992-12-09 Klöckner-Humboldt-Deutz Aktiengesellschaft Cylindre à revêtement résistant à l'usure, à utiliser dans des broyeurs à cylindres en particulier dans des broyeurs à cylindres à haute pression
US6502773B1 (en) * 1997-06-23 2003-01-07 Buhler Ag Feed sensor system and method of operation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449344A1 (de) * 1974-10-17 1976-04-22 Ver Flugtechnische Werke Oelmahlwerk mit einer automatischen stelleinrichtung
US4619408A (en) * 1983-02-25 1986-10-28 Sangati S.P.A. Control system for grinding mill
US5060874A (en) 1990-08-16 1991-10-29 Mclanahan Corporation Crusher
EP0516952A1 (fr) 1991-05-28 1992-12-09 Klöckner-Humboldt-Deutz Aktiengesellschaft Cylindre à revêtement résistant à l'usure, à utiliser dans des broyeurs à cylindres en particulier dans des broyeurs à cylindres à haute pression
US6502773B1 (en) * 1997-06-23 2003-01-07 Buhler Ag Feed sensor system and method of operation

Also Published As

Publication number Publication date
CN203316181U (zh) 2013-12-04
WO2013156965A1 (fr) 2013-10-24

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