WO2016104224A1 - 竪型ローラミル - Google Patents

竪型ローラミル Download PDF

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Publication number
WO2016104224A1
WO2016104224A1 PCT/JP2015/084962 JP2015084962W WO2016104224A1 WO 2016104224 A1 WO2016104224 A1 WO 2016104224A1 JP 2015084962 W JP2015084962 W JP 2015084962W WO 2016104224 A1 WO2016104224 A1 WO 2016104224A1
Authority
WO
WIPO (PCT)
Prior art keywords
scraper
raw material
roller mill
vertical roller
scraper body
Prior art date
Application number
PCT/JP2015/084962
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
信雄 時岡
文典 安藤
大輔 笠井
伸一 宮川
Original Assignee
川崎重工業株式会社
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 川崎重工業株式会社 filed Critical 川崎重工業株式会社
Priority to EP15872793.3A priority Critical patent/EP3238824B1/en
Publication of WO2016104224A1 publication Critical patent/WO2016104224A1/ja

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    • 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
    • B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
    • 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

Definitions

  • the present invention relates to a vertical roller mill that crushes by crushing a raw material between a crushing roller and a rotary table.
  • the raw material supplied on the center of the rotary table moves radially outward by the centrifugal force generated by the rotation of the rotary table, and is supplied onto the annular grinding surface formed on the rotary table.
  • a separator is provided above the rotary table inside the mill casing, and raw materials (coarse powder) coarser than a desired particle size (particle size) are classified by the separator and refluxed to the center of the rotary table.
  • the raw material (coarse powder) recirculated onto the center of the rotary table is supplied onto the pulverized surface of the rotary table by the centrifugal force of the rotary table together with the raw material charged from the raw material charging chute.
  • the raw material supplied on the circular crushing surface of the rotary table is rotated and moved by the rotary operation of the rotary table, and is caught between a plurality of crushing rollers and the rotary table.
  • Each of the plurality of grinding rollers is elastically pressed toward the grinding surface of the rotary table by a roller pressing mechanism having a hydraulic cylinder or the like.
  • the raw material caught between the crushing roller and the rotary table is crushed by the pressing force of the crushing roller.
  • a scraper is provided on the biting side of the grinding roller.
  • the scraper is installed above a predetermined distance from the grinding surface of the rotary table, and is fixed to a support beam above the rotary table.
  • the scraper leveles the raw material to make the layer thickness uniform before the raw material is caught in the gap between the grinding roller and the rotary table, thereby reducing mill vibration during grinding due to fluctuations in the raw material layer thickness. To do.
  • the layer thickness of the raw material supplied on the crushing surface of the rotary table varies depending on the production type, the production amount, the operation parameters (raw material input amount, etc.), and the scraper has an optimum height corresponding to the layer thickness.
  • the present invention has been made in view of the above-mentioned problems of the prior art, and even when the layer thickness of the raw material supplied on the pulverizing surface of the rotary table varies, the scraper is changed according to the variation of the layer thickness.
  • An object of the present invention is to provide a vertical roller mill whose height position is automatically adjusted.
  • a vertical roller mill includes a rotary table having a pulverizing surface, a pulverizing roller for biting and pulverizing a raw material between the pulverizing surface, A scraper for adjusting the layer thickness of the raw material supplied to the crushing roller, wherein the scraper is spaced apart above the crushing surface, and the scraper main body is separated from the crushing surface.
  • the second aspect of the present invention is characterized in that, in the first aspect, the mobilization means is configured to suspend the scraper body so as to be swingable around a horizontal axis.
  • the scraper body has a contact surface with the raw material, and the contact surface faces obliquely downward in a stationary state of the scraper body. It is characterized by that.
  • the fourth aspect of the present invention is characterized in that, in the third aspect, the contact surface of the scraper body forms an angle of 15 ° to 75 ° with respect to a vertical surface.
  • the fifth aspect of the present invention is characterized in that, in any one of the first to fourth aspects, the resistance applying means has a weight for urging the scraper body downward.
  • the sixth aspect of the present invention is characterized in that, in the fifth aspect, the weight of the weight is adjustable.
  • the scraper further includes a movable range regulating means for regulating an operable range of the scraper body.
  • the eighth aspect of the present invention is characterized in that, in the seventh aspect, the movable range restricting means is configured to be capable of adjusting a lowermost position and an uppermost position of the scraper body.
  • the ninth aspect of the present invention is characterized in that in any one of the first to eighth aspects, a dust cover provided around the mobilization means is further provided.
  • the scraper body has a contact surface with the raw material, and a lower portion of the contact surface is formed thick. It is characterized by that.
  • a vertical roller mill in which the height position of the scraper is automatically adjusted according to the variation of the layer thickness even when the layer thickness of the raw material supplied on the grinding surface of the rotary table varies.
  • the purpose is to do.
  • the longitudinal cross-sectional view which showed schematic structure of the vertical roller mill by one Embodiment of this invention.
  • positioning of the movable scraper in the vertical roller mill shown in FIG. The front view which showed the movable scraper of the vertical roller mill shown in FIG.
  • the side view which showed the movable scraper of the vertical roller mill shown in FIG. The side view for demonstrating operation
  • action of the movable scraper of the vertical roller mill shown in FIG. The schematic diagram for demonstrating the effect
  • the vertical roller mill 1 includes a plurality of (this book) that squeezes the raw material between the rotary table 2 and the rotary table 2 where the raw material is supplied to the center of the upper surface.
  • this book a plurality of (this book) that squeezes the raw material between the rotary table 2 and the rotary table 2 where the raw material is supplied to the center of the upper surface.
  • the turntable 2 is driven to rotate about the vertical rotation axis L0.
  • the plurality of grinding rollers 3 are arranged at equiangular intervals on a virtual circumference centered on the vertical rotation axis L0 of the turntable 2.
  • Each of the plurality of crushing rollers 3 is pressed toward the annular crushing surface 2a of the turntable 2 shown in FIG. 2 by a roller pressing mechanism 4 having a drive source such as a hydraulic cylinder.
  • the vertical roller mill 1 includes a rotary drive source 5 and a speed reducer 6 for the rotary table 2, and the rotary table 2 is installed above the speed reducer 6.
  • the rotary table 2 and the grinding roller 3 are covered with a mill casing 7.
  • the supply of the raw material to the turntable 2 is performed through a raw material supply chute 8 disposed through the mill casing 7.
  • the raw material supply chute 8 extends along the vertical rotation axis L ⁇ b> 0 of the turntable 2.
  • a separator 9 is provided above the rotary table 2. Of the raw materials released radially outward from the turntable 2 by centrifugal force, the raw materials pulverized more finely than a predetermined particle size (particle size) pass through the hot air duct (not shown) to the inside of the mill casing 7. Is blown up by the hot air supplied to the separator 9 and transferred to the separator 9.
  • the separator 9 is rotationally driven by a separator driving device 10 composed of an electric motor or the like, and among the raw materials blown up by hot air, only the raw material (fine powder) finer than the desired particle size (particle size) is placed on the upper portion of the mill casing 7. It discharges from the provided fine powder discharge duct (not shown). On the other hand, the raw material (coarse powder) coarser than the desired particle size (particle size) is classified by the separator 9 and returned to the rotary table 2 through the funnel-shaped member (inner cone) 11, and the pulverizing roller 3 and the rotary table are collected. 2 and is crushed again.
  • a separator driving device 10 composed of an electric motor or the like
  • the vertical roller mill 1 includes a recovery casing 12 for recovering a raw material that has not been blown up by hot air among the raw materials released around the rotary table 2 by the centrifugal force accompanying the rotation of the rotary table 2.
  • the recovery casing 12 has an outer diameter larger than that of the turntable 2 and has an annular shape as a whole. The raw material recovered in the recovery casing 12 is returned to the turntable 2 via an external circulation line (not shown) and pulverized again.
  • the vertical roller mill 1 includes three crushing rollers 3, and the layer thickness of the raw material supplied to the crushing rollers 3 for each of the three crushing rollers 3.
  • a scraper 13 for adjusting the above is installed.
  • the scraper 13 is provided on a support beam 14 installed inside the mill casing 7.
  • the scraper 13 includes a scraper body 15 that is spaced above the grinding surface 2a of the rotary table 2, and a raw material on the grinding surface 2a.
  • the scraper body 15 comes into contact with the main body 15, it has resistance against movement of the scraper main body 15 in a direction away from the grinding surface 2 a and a mobilization means 16 for enabling the scraper body 15 to move away from the grinding surface 2 a.
  • Resistance providing means 17 (FIG. 4) for applying.
  • the moving means 16 is configured to suspend the scraper body 15 so as to be swingable around a horizontal axis. That is, the mobilization means 16 has a turning shaft 18 extending in the horizontal direction, and the turning shaft 18 is supported by a bearing 19 provided on the support beam 14 so as to be turnable.
  • the swing shaft 18 is provided with a plurality of movable support members 20 extending in the vertical direction, and the movable support member 20 can swing around the swing shaft 18.
  • a scraper body 15 is provided at the lower end of the movable member 20, and the scraper body 15 can swing together with the movable support member 20.
  • the contact surface 15 a with the raw material of the scraper body 15 faces obliquely downward when the scraper body 15 is stationary (in the lowest position). More specifically, the contact surface 15a of the scraper body 15 forms an angle of 15 ° to 75 °, preferably 45 ° with respect to the vertical surface. In consideration of wear due to contact with the raw material, the lower portion of the contact surface 15a of the scraper body 15 is formed thick.
  • the resistance applying means 17 of the scraper 13 has a weight 21 that urges the scraper body 15 downward.
  • the weight 21 is detachably attached to the lower end portion of the movable support member 20 with a bolt 22.
  • the weight 21 is formed by superposing a plurality of plates, and the weight of the weight 21 can be adjusted by changing the number and type of the plates.
  • the scraper 13 further has a movable range restricting means 23 for restricting the operable range of the scraper body 15.
  • the movable range restricting means 23 includes a first stopper member 24 for defining the lowest position of the scraper body 15 and a second stopper member 25 for defining the uppermost position of the scraper body 15.
  • the first stopper member 24 is capable of releasing the bolt support piece 24a provided on the upper surface of the support beam 14, the stopper bolt 24b screwed into the bolt hole formed in the bolt support piece 24a, and the stopper bolt 24b.
  • the tip of the stopper bolt 24b is in contact with the upper end of the movable support member 20 positioned above the pivot shaft 18 in the stationary state of the movable support member 20 shown in FIG. Thereby, the movable support member 20 is restricted from rotating in the counterclockwise direction in FIG.
  • the tip of the stopper bolt 24 b is brought into contact with the upper end of the movable support member 20.
  • the movable support member 20 is configured to be stationary. Thereby, when the movable support member 20 is in a stationary state, the raw material contact surface 15a of the scraper body 15 is inclined by 15 ° to 75 °, preferably 45 °, toward the grinding roller 3 with respect to the vertical direction.
  • the second stopper member 25 is capable of releasing the bolt support piece 25a provided on the lower surface of the support beam 14, the stopper bolt 25b screwed into the bolt hole formed in the bolt support piece 25a, and the stopper bolt 25b.
  • a dust cover 26 shown in FIG. 7 is provided around the movable means 16 (18, 19) of the scraper 13. Providing the dust cover 26 prevents dust from adhering around the swivel axis 18 of the scraper 13, thereby preventing malfunction of the scraper 13.
  • the scraper body 101 of the conventional scraper 100 is fixedly installed by a fixing bolt 103 via a fixing support member 102 on the biting side of the grinding roller 3.
  • the distance D between the lower end of the scraper body 101 and the grinding surface 2a of the rotary table 2 is always constant. That is, even when the layer thickness T of the raw material on the upstream side of the scraper 100 varies, the separation distance D between the lower end of the scraper body 101 and the grinding surface 2a of the turntable 2 does not change.
  • the scraper body 15 is suspended by the movable support member 20 so as to be swingable around the turning shaft 18. Yes.
  • the scraper body 15 is pressed by the raw material that moves as the rotary table 2 rotates, if the pressing force exceeds the resistance force by the weight 21, the scraper body 15 together with the movable support member 20 moves around the pivot shaft 18. Rotate to. By this rotation operation, the separation distance D between the lower end of the scraper body 15 and the grinding surface 2a of the rotary table 2 is increased.
  • the amount of angular displacement around the swivel axis 18 of the movable support member 20 and the scraper body 15 is increased by increasing the layer thickness T of the raw material on the upstream side of the scraper 13.
  • the distance D between the lower end of the scraper body 15 and the grinding surface 2a of the rotary table 2 is further increased.
  • the lower end of the scraper main body 15 and the grinding surface 2a of the rotary table 2 follow the fluctuation of the layer thickness T of the raw material on the upstream side of the scraper 13.
  • the separation distance D changes.
  • the height position of the scraper body 15 is automatically adjusted to the optimum position according to the layer thickness of the raw material.
  • the raw material contact surface 15a of the scraper body 15 is inclined with respect to the vertical surface, whereby the raw material contacts the grinding surface 2a of the turntable 2 with the raw material contact surface 15a. Pressed in the direction and compressed. A part of the air contained in the raw material is expelled by the compression action of the raw material by the raw material contact surface 15a.
  • the raw material pulverization operation by the pulverizing roller 3 can be stabilized and the pulverization efficiency can be increased.
  • the inclination angle of the raw material contact surface 15a of the scraper body 15 with respect to the vertical surface can achieve the above-described raw material degassing and consolidation effects, and can sufficiently secure the movable range of the scraper main body 15 to ensure the necessary adjustment range. It is preferable to determine this.
  • the vertical roller mill 1 having three crushing rollers 3 has been described.
  • the number of crushing rollers is not limited, and there are four or more crushing rollers. Also good.
  • the weight 21 is used as the resistance applying means 17 of the scraper 13.
  • a resilient means such as a spring member or an air damper can be used.
  • the movable support member 20 having a bent shape is used, but instead of this, a straight shape movable support member is used, and the raw material contact surface of the scraper body 15 in a stationary state is used. 15a may be oriented in the vertical direction.
  • the raw material contact surface 15a of the scraper main body 15 is inclined with respect to the vertical surface by rotating the scraper main body 15 together with the movable support member by the pressing force from the raw material, so that the raw material contact surface 15a compresses the raw material. Degassing from the raw materials and consolidation effect can be expected.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
PCT/JP2015/084962 2014-12-22 2015-12-14 竪型ローラミル WO2016104224A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15872793.3A EP3238824B1 (en) 2014-12-22 2015-12-14 Vertical roller mill

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014259383A JP6656805B2 (ja) 2014-12-22 2014-12-22 竪型ローラミル
JP2014-259383 2014-12-22

Publications (1)

Publication Number Publication Date
WO2016104224A1 true WO2016104224A1 (ja) 2016-06-30

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ID=56147576

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Application Number Title Priority Date Filing Date
PCT/JP2015/084962 WO2016104224A1 (ja) 2014-12-22 2015-12-14 竪型ローラミル

Country Status (4)

Country Link
EP (1) EP3238824B1 (zh)
JP (1) JP6656805B2 (zh)
CN (2) CN105709884B (zh)
WO (1) WO2016104224A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020523192A (ja) * 2017-06-13 2020-08-06 ロエシェ ゲーエムベーハー 竪型ローラミル
CN115301352A (zh) * 2022-08-12 2022-11-08 李珍 一种环氧树脂的制备方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6656805B2 (ja) * 2014-12-22 2020-03-04 川崎重工業株式会社 竪型ローラミル
CN109692731A (zh) * 2019-02-22 2019-04-30 安徽海螺川崎节能设备制造有限公司 一种水泥立磨
DE102019210047B3 (de) 2019-07-08 2020-06-18 Thyssenkrupp Ag Vertikal-Rollenmühle
CN112742545A (zh) * 2021-02-04 2021-05-04 南京西普水泥工程集团有限公司 一种刮料板
CN113171831B (zh) * 2021-04-23 2022-12-09 江西鑫吉食品有限公司 一种食品生产加工用原料粉碎过筛设备

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPS614549A (ja) * 1984-06-18 1986-01-10 川崎重工業株式会社 スクレ−パ付竪型ミル
JPH03254842A (ja) * 1990-03-06 1991-11-13 Ube Ind Ltd 竪型粉砕機
JPH09103697A (ja) * 1995-10-11 1997-04-22 Babcock Hitachi Kk ローラミル
JPH10118509A (ja) * 1996-10-18 1998-05-12 Kurimoto Ltd 竪型ミル
JP2014091109A (ja) * 2012-11-06 2014-05-19 Mitsubishi Heavy Ind Ltd ローラミル装置

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Publication number Priority date Publication date Assignee Title
JPH074545B2 (ja) * 1990-01-23 1995-01-25 宇部興産株式会社 竪型粉砕機
CN101125306A (zh) * 2007-10-09 2008-02-20 辽宁重机设备技术有限公司 辊式中速磨机
CN102302968B (zh) * 2011-07-06 2013-04-24 郝志刚 立式磨机及其刮板装置的安装机构
JP5906782B2 (ja) * 2012-02-13 2016-04-20 宇部興産機械株式会社 竪型粉砕機
CN102784694B (zh) * 2012-08-16 2015-05-20 郝志刚 立式磨机
JP6656805B2 (ja) * 2014-12-22 2020-03-04 川崎重工業株式会社 竪型ローラミル

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS614549A (ja) * 1984-06-18 1986-01-10 川崎重工業株式会社 スクレ−パ付竪型ミル
JPH03254842A (ja) * 1990-03-06 1991-11-13 Ube Ind Ltd 竪型粉砕機
JPH09103697A (ja) * 1995-10-11 1997-04-22 Babcock Hitachi Kk ローラミル
JPH10118509A (ja) * 1996-10-18 1998-05-12 Kurimoto Ltd 竪型ミル
JP2014091109A (ja) * 2012-11-06 2014-05-19 Mitsubishi Heavy Ind Ltd ローラミル装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020523192A (ja) * 2017-06-13 2020-08-06 ロエシェ ゲーエムベーハー 竪型ローラミル
CN115301352A (zh) * 2022-08-12 2022-11-08 李珍 一种环氧树脂的制备方法
CN115301352B (zh) * 2022-08-12 2024-05-10 上海固柯科技有限公司 一种环氧树脂的制备方法

Also Published As

Publication number Publication date
JP6656805B2 (ja) 2020-03-04
EP3238824B1 (en) 2019-11-13
CN105709884A (zh) 2016-06-29
CN105709884B (zh) 2019-03-26
EP3238824A1 (en) 2017-11-01
CN205599248U (zh) 2016-09-28
EP3238824A4 (en) 2018-09-19
JP2016117042A (ja) 2016-06-30

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