WO2011145527A1 - 竪型ミル - Google Patents
竪型ミル Download PDFInfo
- Publication number
- WO2011145527A1 WO2011145527A1 PCT/JP2011/061079 JP2011061079W WO2011145527A1 WO 2011145527 A1 WO2011145527 A1 WO 2011145527A1 JP 2011061079 W JP2011061079 W JP 2011061079W WO 2011145527 A1 WO2011145527 A1 WO 2011145527A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roller
- crushing
- pulverizing
- grinding
- biomass
- Prior art date
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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
- B02C15/004—Shape or construction of rollers or balls
-
- 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 present invention relates to a vertical mill for pulverizing and pulverizing solids such as biomass.
- Biomass is an organic substance resulting from photosynthesis, and includes wood, vegetation, agricultural crops, and moss.
- One method of using this biomass as a fuel is to pulverize and pulverize biomass solids and supply it to a pulverized coal-fired boiler for use as a fuel. This is known as a single pulverization method in which coal and biomass are separately pulverized, and a mixed pulverization method in which coal and biomass are mixed and then pulverized. In any system, a biomass crusher for crushing biomass solids is required.
- the coal was pulverized using a vertical roller mill, but the biomass solids are stretchable, so the pulverization is worse than coal, and the vertical roller mill for coal has a predetermined size. It is difficult to grind. Therefore, conventionally, a biomass solid is pulverized using a pulverizer such as a hammer mill or a cutter mill.
- a pulverizer such as a hammer mill or a cutter mill.
- the method of pulverizing biomass solids using a hammer mill, cutter mill, etc. requires a lot of power and not only deteriorates the pulverization efficiency, but also shortens the life and requires maintenance in a short period of time. Have difficulty.
- the biomass pulverization apparatus described in Patent Document 1 pulverizes biomass solids supplied on a rotation-driven pulverization table by a roller that operates in conjunction with the rotation of the table, and blows up from below.
- the biomass pulverized product is conveyed upward by an air current and classified into coarse powder and fine powder.
- the biomass crushing apparatus described in Patent Document 2 is based on the distance between the roller and the table, so that the pressing force of the roller and the rotation speed of the table are within a certain range that promotes the mutual grinding between the biomass chips. Is to control.
- the biomass solids are fibrous and soft, and it is difficult to efficiently pulverize the biomass solids only with the compressive force of the roller, which requires a lot of power and time, and the pulverization efficiency is not good. There is.
- This invention solves the subject mentioned above, and aims at providing the vertical mill which can improve a grinding
- a vertical mill according to the present invention is disposed in a housing so as to be supported so as to be capable of driving and rotating with a rotation axis along a vertical direction, and opposed to the upper side of the crushing table.
- a crushing roller that can rotate in conjunction with rotation of the crushing table, and a roller swing mechanism that can swing the crushing roller along the surface of the crushing table and in a direction different from the rotation direction of the crushing table. are provided.
- the roller swinging mechanism can swing the pulverizing roller using a pulverizing position of the pulverizing roller in the pulverizing table or a radially outer position of the pulverizing table as a fulcrum from the pulverizing position. It is characterized by that.
- a support shaft having a base end portion supported by the housing and a tip end portion facing the rotation axis of the crushing table is provided, and a connecting shaft extending substantially vertically along the tip end portion of the support shaft A base end portion of the swing shaft is swingably connected through the shaft, and the crushing roller is rotatably supported at a tip portion of the swing shaft.
- the pulverizing roller oscillates by oscillating the oscillating shaft with respect to the support shaft, and the pulverizing roller can be easily oscillated.
- the roller swing mechanism has an actuator capable of swinging the grinding roller.
- the crushing roller can be easily swung by the actuator.
- the actuator can be constituted by a hydraulic cylinder, an air cylinder, a motor, or the like.
- the roller swinging mechanism includes an urging member that urges the pulverizing roller to the upstream side in the rotation direction of the pulverizing table.
- the pulverizing roller swings downstream in the rotational direction when the rotational force of the pulverizing table is transmitted.
- the rotational force of the pulverizing table decreases due to the pulverization state of the solid matter, the urging force of the urging member It will swing to the upstream side in the rotation direction, and the grinding roller can be easily swinged with a simple configuration.
- FIG. 1 is a plan view illustrating a crushing roller in a vertical mill according to Embodiment 1 of the present invention.
- FIG. 2 is a front view illustrating a grinding roller in the vertical mill of the first embodiment.
- FIG. 3 is a schematic configuration diagram illustrating the vertical mill of the first embodiment.
- FIG. 4 is a plan view illustrating a grinding roller in a vertical mill according to a second embodiment of the present invention.
- FIG. 1 is a plan view showing a grinding roller in a vertical mill according to a first embodiment of the present invention
- FIG. 2 is a front view showing a grinding roller in a vertical mill of the first embodiment
- FIG. It is a schematic block diagram showing a vertical mill.
- the crushing table 13 is arranged at the lower part of the housing 11.
- the crushing table 13 is disposed at the center position of the housing 11 so as to face the lower end of the biomass supply pipe 12. Further, the crushing table 13 is connected to a lower portion of a rotating shaft 14 having a rotation axis along the vertical direction, and is rotatably supported by the housing 11.
- a worm wheel 15 as a drive gear is fixed to the rotary shaft 14, and a worm gear 16 of a drive motor (not shown) mounted on the housing 11 is engaged with the worm wheel 15. Therefore, the crushing table 13 can be driven to rotate by the drive motor via the worm gear 16, the worm wheel 15, and the rotating shaft 14.
- the connecting shaft 24 is preferably along a direction substantially orthogonal to the surface of the grinding table 13 (table liner 17) facing the outer peripheral surface of the grinding roller 18, whereby the grinding roller 18 and the grinding table 13 are described later. It can swing while ensuring a predetermined gap.
- the position of the connecting shaft 24 that connects the support shaft 21 and the swing shaft 23 is the swing center of the crushing roller 18, and this swing center is preferably close to the crushing position of the crushing roller 18 in the crushing table 13.
- the crushing roller 18 can apply an appropriate shearing force to solids such as biomass.
- the crushing roller 18 crushes the biomass solids with the crushing table 13 (table liner 17), and a predetermined amount is provided between the surface of the crushing roller 18 and the surface of the crushing table 13 (table liner 17). It is necessary to secure a gap. Therefore, by defining the support shaft 21 at a predetermined rotational position by the hydraulic cylinder 26, there is a predetermined gap between the surface of the pulverizing roller 18 and the surface of the pulverizing table 13 where biomass solids can be taken and pulverized. Secured.
- the crushing roller 18 can be swung on the crushing table 13, that is, twisted.
- the crushing roller 18 can swing to positions 18a to 18b represented by a two-dot chain line in FIG. 1, and a swing angle ⁇ about the center O is set.
- the rocking center of the grinding roller 18 is set at a grinding position by the grinding roller 18, that is, a contact position between the grinding roller 18 and the grinding table 13.
- the rocking center of the crushing roller 18 has a support shaft 21 and a rocking shaft 23 that are located radially outside the crushing table 13 from the crushing position by the crushing roller 18.
- the connecting shaft 24 to be connected is set.
- the connecting shaft 24 is provided on the pulverizing position side of the pulverizing roller 18 from the intermediate position of the axial length of the support shaft 21 and the swing shaft 23 combined.
- the crushing roller 18 has a truncated cone shape with a small diameter on the tip side and the surface of the crushing roller 18 is flat.
- the present invention is not limited to this shape.
- the grinding roller 18 may have a tire shape.
- a plurality of (three) crushing rollers 18 are provided and arranged at equal intervals along the rotation direction of the crushing table 13. In this case, the number and arrangement of the crushing rollers 18 may be appropriately set according to the size of the crushing table 13, the crushing roller 18, and the like.
- the housing 11 is provided with an inlet port 31 at the lower part located on the outer periphery of the crushing table 13 and through which primary air is fed. Further, the housing 11 is provided with an outlet port 32 for discharging the pulverized biomass located on the outer periphery of the biomass supply pipe 12 at the top.
- the housing 11 is provided with a rotary separator 33 as a classification device for classifying the pulverized biomass below the outlet port 32.
- the rotary separator 33 is provided on the outer periphery of the biomass supply pipe 12 and can be driven and rotated by a driving device 34.
- the housing 11 is provided with a foreign matter discharge pipe 35 at the bottom.
- the foreign matter discharge pipe 35 is configured to drop and discharge foreign matters (spillage) such as gravel and metal pieces mixed in the biomass solid matter from the outer peripheral portion of the crushing table 13.
- the crushing table 13 is supported in the housing 11 so as to be capable of driving and rotating with a rotation axis along the vertical direction, and the crushing table 13 is crushed facing the upper side of the crushing table 13.
- a crushing roller 18 that can rotate in conjunction with the rotation of the table 13 is disposed, and a roller swinging mechanism 19 that can swing the crushing roller 18 along the surface of the crushing table 13 and in a direction different from the rotation direction is provided. ing.
- the roller swing mechanism 19 swings the grinding roller 18 with the grinding position of the grinding roller 18 on the grinding table 13 or the radially outer position on the grinding table 13 from this grinding position as a fulcrum. It is characterized by being possible. Therefore, a shearing force can be efficiently applied to the solid matter such as biomass by the grinding roller 18, and the solid matter can be efficiently pulverized by cutting the fiber of the biomass.
- the base end portion of the support shaft 21 is supported by the housing 11, the front end portion faces the rotational axis of the crushing table 13, and the front end portion thereof is connected via the connecting shaft 24.
- the base end portion of the swing shaft 23 is swingably connected, and the crushing roller 18 is rotatably supported at the distal end portion of the swing shaft 23. Therefore, the crushing roller 18 is swung by rocking the rocking shaft 23 with respect to the support shaft 21, and the crushing roller 18 can be supported so as to be swingable easily.
- the roller swing mechanism 19 hydraulic cylinders (actuators) 41 and 42 capable of swinging the crushing roller 18 are provided. Accordingly, the crushing roller 18 can be easily swung by the hydraulic cylinders 41 and 42.
- the actuator constituting the roller swing mechanism 19 is not limited to the hydraulic cylinders 41 and 42 but may be an air cylinder, or may be configured using a motor and a cam mechanism.
- the crushing roller 18 swings while rotating, can apply a shearing force while pressing the solid material, and cuts and crushes the fiber and the like.
- the solid matter crushed by the crushing roller 18 rises while being dried by the primary air fed into the housing 11 from the inlet port 31.
- the raised pulverized solid matter is classified by the rotary separator 33, and the coarse powder drops and is returned to the pulverization table 13 again to be pulverized again.
- the fine-grained powder passes through the rotary separator 33, rides on the air current, and is discharged from the outlet port 32. Further, spillage such as gravel and metal pieces mixed in solid matter such as biomass falls outward from the outer peripheral portion by the centrifugal force of the crushing table 13 and is discharged by the foreign matter discharge pipe 35.
- the crushing table 13 is supported in the housing 11 so as to be capable of driving and rotating with a rotation axis along the vertical direction, and the crushing table 13 is crushed facing the upper side of the crushing table 13.
- a crushing roller 18 that can rotate in conjunction with the rotation of the table 13 is disposed, and a roller oscillating mechanism 51 that can oscillate the crushing roller 18 along the surface of the crushing table 13 and in a direction different from the rotation direction is provided. ing.
- the tension springs 52 may be disposed on both sides of the support shaft 21 and the swing shaft 23 in the horizontal direction, and the biasing force of the tension springs 52 disposed on the upstream side in the rotation direction of the crushing table 13 may be set large. . Further, as described in the first embodiment, the hydraulic cylinders 41 and 42 and the tension spring 52 may be used in combination.
- grooves and uneven portions may be formed on the outer peripheral surface of the crushing roller 18 using ceramics or wear-resistant steel.
- the vertical mill according to the present invention improves the pulverization efficiency by efficiently pulverizing solids such as biomass by enabling the pulverization roller to swing along the surface of the pulverization table and in a direction different from the rotation direction. It can be applied to an apparatus for pulverizing solids such as biomass.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
12 バイオマス供給管
13 粉砕テーブル
17 テーブルライナ
18 粉砕ローラ
19,51 ローラ揺動機構
21 支持軸
23 揺動軸
24 連結軸
26 油圧シリンダ
41,42 油圧シリンダ(アクチュエータ)
52 引張スプリング(付勢部材)
Claims (5)
- ハウジング内に鉛直方向に沿った回転軸心をもって駆動回転可能に支持される粉砕テーブルと、
該粉砕テーブルの上方に対向して配置されると共に該粉砕テーブルの回転に連動して回転可能な粉砕ローラと、
前記粉砕ローラを前記粉砕テーブルの表面に沿うと共に前記粉砕テーブルの回転方向とは異なる方向に揺動可能なローラ揺動機構と、
を備えることを特徴とする竪型ミル。 - 前記ローラ揺動機構は、前記粉砕テーブルにおける前記粉砕ローラの粉砕位置またはこの粉砕位置より前記粉砕テーブルにおける径方向外側位置を支点として前記粉砕ローラを揺動可能であることを特徴とする請求項1に記載の竪型ミル。
- 基端部が前記ハウジングに支持されて先端部が前記粉砕テーブルの回転軸心を向く支持軸が設けられ、該支持軸の先端部に略鉛直方向に沿う連結軸を介して揺動軸の基端部が揺動自在に連結され、該揺動軸の先端部に前記粉砕ローラが回転自在に支持されることを特徴とする請求項1または2に記載の竪型ミル。
- 前記ローラ揺動機構は、前記粉砕ローラを揺動可能なアクチュエータを有することを特徴とする請求項1から3のいずれか一つに記載の竪型ミル。
- 前記ローラ揺動機構は、前記粉砕ローラを前記粉砕テーブルの回転方向の上流側に付勢する付勢部材を有することを特徴とする請求項1から4のいずれか一つに記載の竪型ミル。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/698,117 US8602339B2 (en) | 2010-05-19 | 2011-05-13 | Vertical mill |
CN201180024496.0A CN103068488B (zh) | 2010-05-19 | 2011-05-13 | 立式磨机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010115484A JP2011240275A (ja) | 2010-05-19 | 2010-05-19 | 竪型ミル |
JP2010-115484 | 2010-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011145527A1 true WO2011145527A1 (ja) | 2011-11-24 |
Family
ID=44991633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/061079 WO2011145527A1 (ja) | 2010-05-19 | 2011-05-13 | 竪型ミル |
Country Status (4)
Country | Link |
---|---|
US (1) | US8602339B2 (ja) |
JP (1) | JP2011240275A (ja) |
CN (1) | CN103068488B (ja) |
WO (1) | WO2011145527A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113631273A (zh) * | 2019-04-04 | 2021-11-09 | 德国莱歇公司 | 用于力传递的杠杆系统 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10668476B2 (en) * | 2016-08-03 | 2020-06-02 | General Electric Technology Gmbh | Enclosures for vertical pulverizer systems |
CN109926164A (zh) * | 2019-04-27 | 2019-06-25 | 南京凯盛国际工程有限公司 | 一种新型摇臂磨辊结构 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001070813A (ja) * | 1999-09-06 | 2001-03-21 | Kurimoto Ltd | 竪型ミルのローラ支持構造 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5875977A (en) * | 1998-05-13 | 1999-03-02 | Combustion Engineering, Inc. | Technique for improving the response time of pulverized coal boilers |
CN2369763Y (zh) * | 1999-02-08 | 2000-03-22 | 朱四维 | 离心立式磨机 |
US6824088B2 (en) * | 2001-05-04 | 2004-11-30 | Foster Wheeler Energy Corporation | Roller mill |
US6871808B2 (en) * | 2002-04-16 | 2005-03-29 | Chef'n Corporation | Apparatus for grinding material, such as spice or grain |
US7028934B2 (en) * | 2003-07-31 | 2006-04-18 | F. L. Smidth Inc. | Vertical roller mill with improved hydro-pneumatic loading system |
CN2808295Y (zh) * | 2005-12-31 | 2006-08-23 | 郝天成 | 立式磨机 |
JP4939145B2 (ja) | 2006-08-21 | 2012-05-23 | 三菱重工業株式会社 | バイオマス粉砕装置およびその制御方法 |
DE102006050205B4 (de) * | 2006-10-25 | 2013-03-21 | Gebr. Pfeiffer Ag | Sicherheitssystem für Wälzmühlen |
CN201033309Y (zh) * | 2007-05-14 | 2008-03-12 | 江苏恒远机械制造有限公司 | 研磨用立式磨机 |
US20090127362A1 (en) * | 2007-11-16 | 2009-05-21 | Flsmidth A/S | Roller mill for comminuting solid materials |
JP5594941B2 (ja) | 2008-06-04 | 2014-09-24 | 三菱重工業株式会社 | バイオマス粉砕装置、及び該装置の制御方法 |
-
2010
- 2010-05-19 JP JP2010115484A patent/JP2011240275A/ja not_active Withdrawn
-
2011
- 2011-05-13 CN CN201180024496.0A patent/CN103068488B/zh not_active Expired - Fee Related
- 2011-05-13 WO PCT/JP2011/061079 patent/WO2011145527A1/ja active Application Filing
- 2011-05-13 US US13/698,117 patent/US8602339B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001070813A (ja) * | 1999-09-06 | 2001-03-21 | Kurimoto Ltd | 竪型ミルのローラ支持構造 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113631273A (zh) * | 2019-04-04 | 2021-11-09 | 德国莱歇公司 | 用于力传递的杠杆系统 |
Also Published As
Publication number | Publication date |
---|---|
JP2011240275A (ja) | 2011-12-01 |
US20130056569A1 (en) | 2013-03-07 |
CN103068488A (zh) | 2013-04-24 |
CN103068488B (zh) | 2014-11-26 |
US8602339B2 (en) | 2013-12-10 |
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