EP0110535A2 - Verfahren und Gerät zum Auswechseln einer Mahlwalze in einer vertikalen Walzenmühle - Google Patents

Verfahren und Gerät zum Auswechseln einer Mahlwalze in einer vertikalen Walzenmühle Download PDF

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Publication number
EP0110535A2
EP0110535A2 EP19830306272 EP83306272A EP0110535A2 EP 0110535 A2 EP0110535 A2 EP 0110535A2 EP 19830306272 EP19830306272 EP 19830306272 EP 83306272 A EP83306272 A EP 83306272A EP 0110535 A2 EP0110535 A2 EP 0110535A2
Authority
EP
European Patent Office
Prior art keywords
roller
mill
mill housing
cable
grinding
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Withdrawn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
EP19830306272
Other languages
English (en)
French (fr)
Inventor
Erik Reinhardt
Luis Petersen
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.)
FLSmidth and Co AS
Original Assignee
FLSmidth and Co AS
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 FLSmidth and Co AS filed Critical FLSmidth and Co AS
Publication of EP0110535A2 publication Critical patent/EP0110535A2/de
Withdrawn legal-status Critical Current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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/007—Mills with rollers pressed against a rotary horizontal disc

Definitions

  • the invention relates to a method of and apparatus for replacing a grinding roller in a vertical roller.mill comprising grinding rollers rolling on a horizontal grinding table, and a mill housing having a side opening level with the rollers for removal or insertion of a grinding roller in the mill.
  • a mill is hereinafter referred to as of the kind described.
  • a method of replacing a roller in a mill of the kind described is characterised in that the roller to be replaced is placed in front of the side opening of the mill housing, released from its mounting and then hoisted vertically by means of at least one first cable suspended from at least one hoist at the top of the mill, whereupon a second cable suspended outside the mill and above the side opening is connected to the roller and drawn taut while the first cable is subsequently slackened and the roller thus swung out through the side opening until it only hangs on the second cable outside the mill housing, and in that a new roller is mounted in the mill by the same method.used for removing a roller, but carried out in reverse order.
  • This method enables the hoist for lifting the roller to be placed in the top of the mill housing at a position which can easily be reinforced if necessary, or where the mill housing is already strong enough for carrying a grinding roller.- It is thus unnecessary to provide stiffening and reinforcing measures around the side opening in the mill housing or to dismount large parts of the mill housing and, possibly a built-in separator, for removing a roller. Furthermore, the swinging out of the grinding roller and the swinging in of a new roller can be made in a completely controlled way which is advantageous, also for reasons of security.
  • the invention also includes an apparatus for carrying out the above method, characterised in that at least one hydraulic cylinder is secured to the top of the mill housing in a position substantially in the vertical centre plane of a grinding roller located in front of the side opening of the mill housing, and in that a piston rod, or an extension of the piston rod, of the cylinder extends down into the interior of the mill housing and has means for the attachment of the first cable.
  • the hoisting apparatus comprises two hydraulic cylinders. which may then be disposed adjacent to the circumference of the mill housing.
  • the or each cylinder is mounted on a ceiling of the mill housing in a rocker bearing so that the axis of the cylinder and the piston rod can. continuously adapt to the direction of pull in the first cable.
  • the mill has a grinding table 1 which is rotatable about a vertical axis. Rolling on the grinding table 1 are three grinding rollers 2 which are rotatable about stationary horizontal shafts 3. The three rollers are secured to a common central frame 4 by means of flanges 5. The rollers are urged downwards against the grinding table by means of pull or pressure means, not shown.
  • the mill is, in a manner known per se, encased by a mill housing 6, and at the top of the mill housing is a stationary, built-in separator 7.
  • the mill housing is provided with a side opening 8 level with the grinding rollers and having a size necessary for removing and inserting a grinding roller.
  • a roof 9 of the mill housing On a roof 9 of the mill housing are mounted two hydraulic cylinders 10, the piston rods of which project into the housing.
  • the cylinders are mounted in positions substantially in the centre plane of a roller placed ⁇ in front of the side opening of the housing.
  • the hoisting apparatus in the form of the hydraulic cylinders, is operated in the following way:-The grinding roller to be removed from the mill housing is placed as shown in Figures 1 and 2 in front of the opening 8 of the housing. This is achieved by disconnecting the means for holding the roller axes stationary and also the means for urging the rollers downwards; and rotating the grinding table with the rollers resting and carried on the table. The grinding roller is then released from the central frame 4 and steel wires 11 fastened at one of their ends to the piston rods of the hydraulic cylinders 10 are secured at their other ends to the grinding roller 2, or as shown, form part of a continuous wire passing through a loop which is secured to the roller.
  • the steel wires 11 are then effectively payed out and, by the pull from the steel wire 13 the roller is swung out through the side opening 8 from the position 2a to a position 2b in which the roller is supported by both the inside steel wire 11 and the outside steel wire 13.
  • the outside steel wire 13 takes over more and more of the roller weight until the roller is suspended perpendicularly under the crane hook 12 in position 2c. In this position the steel wire 11 can be removed from the roller after which the roller can be lowered down onto a truck or carried away suspended from the crane hook 12.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP19830306272 1982-11-23 1983-10-17 Verfahren und Gerät zum Auswechseln einer Mahlwalze in einer vertikalen Walzenmühle Withdrawn EP0110535A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8233313 1982-11-23
GB8233313 1982-11-23

Publications (1)

Publication Number Publication Date
EP0110535A2 true EP0110535A2 (de) 1984-06-13

Family

ID=10534428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830306272 Withdrawn EP0110535A2 (de) 1982-11-23 1983-10-17 Verfahren und Gerät zum Auswechseln einer Mahlwalze in einer vertikalen Walzenmühle

Country Status (1)

Country Link
EP (1) EP0110535A2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608192A1 (de) * 1986-03-12 1987-09-17 Pfeiffer Ag Geb Walzenausbauvorrichtung
GB2449681A (en) * 2007-05-31 2008-12-03 Southwestern Corp Ltd A method of adding additional grinding elements to a grinding mill
GB2451299A (en) * 2007-10-05 2009-01-28 Internat Innovative Technologi Multi-sectional roller mill
CN103447789A (zh) * 2013-05-31 2013-12-18 上海宝冶集团有限公司 立式磨机磨辊辊套的更换方法
WO2017186971A1 (en) * 2016-04-29 2017-11-02 General Electric Technology Gmbh System, method and apparatus for servicing a pulverizer

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608192A1 (de) * 1986-03-12 1987-09-17 Pfeiffer Ag Geb Walzenausbauvorrichtung
GB2449681A (en) * 2007-05-31 2008-12-03 Southwestern Corp Ltd A method of adding additional grinding elements to a grinding mill
GB2449681B (en) * 2007-05-31 2009-11-11 Southwestern Corp Ltd Adapting a grinding mill to introduce a grinding element
GB2451299A (en) * 2007-10-05 2009-01-28 Internat Innovative Technologi Multi-sectional roller mill
GB2451299B (en) * 2007-10-05 2009-07-22 Internat Innovative Technologi Multi-sectional roller mill
US8360351B2 (en) 2007-10-05 2013-01-29 Graham Dixon Multi-sectional roller mill
CN103447789A (zh) * 2013-05-31 2013-12-18 上海宝冶集团有限公司 立式磨机磨辊辊套的更换方法
CN103447789B (zh) * 2013-05-31 2016-08-10 上海宝冶集团有限公司 立式磨机磨辊辊套的更换方法
WO2017186971A1 (en) * 2016-04-29 2017-11-02 General Electric Technology Gmbh System, method and apparatus for servicing a pulverizer
CN109219483A (zh) * 2016-04-29 2019-01-15 通用电器技术有限公司 用于保养粉碎机的***、方法和设备
KR20190041967A (ko) * 2016-04-29 2019-04-23 제네럴 일렉트릭 테크놀러지 게엠베하 미분탄기를 수리하는 시스템, 방법 및 장치
US10343173B2 (en) 2016-04-29 2019-07-09 General Electric Technology Gmbh System, method and apparatus for servicing a pulverizer
US11679964B2 (en) 2016-04-29 2023-06-20 General Electric Technology Gmbh System, method and apparatus for servicing a pulverizer

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19841119

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PETERSEN, LUIS

Inventor name: REINHARDT, ERIK