JP3329043B2 - Classifier - Google Patents
ClassifierInfo
- Publication number
- JP3329043B2 JP3329043B2 JP33312093A JP33312093A JP3329043B2 JP 3329043 B2 JP3329043 B2 JP 3329043B2 JP 33312093 A JP33312093 A JP 33312093A JP 33312093 A JP33312093 A JP 33312093A JP 3329043 B2 JP3329043 B2 JP 3329043B2
- Authority
- JP
- Japan
- Prior art keywords
- classifying
- classification
- rotor
- coarse powder
- powder
- 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.)
- Expired - Fee Related
Links
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Crushing And Grinding (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はセメント原料のクリンカ
ー、ボイラ、セメント高炉、各種工業炉に使用する微粉
炭、小麦、トーモロコシ等の穀粉の分級のための分級装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a classifier for classifying flour such as pulverized coal, wheat, corn and the like, which is used in clinker, boiler, cement blast furnace and various industrial furnaces of cement raw materials.
【０００２】[0002]
【従来の技術】先ず図４に於て、従来の竪型ミル及び分
級装置について略述する。2. Description of the Related Art First, referring to FIG. 4, a conventional vertical mill and a classifier will be briefly described.
【０００３】ミルａの頂部ｂ中央からパイプｃを通して
原料粉体が直下のテーブルｄに供給される。[0003] Raw material powder is supplied from a center of the top b of the mill a to a table d immediately below through a pipe c.
【０００４】該テーブルｄの外周部には、テーブルｄと
同芯状にテーブルセグメントｅがあり、該セグメントｅ
には大径タイヤ型特殊鋼製ローラｆが載置されている。At the outer periphery of the table d, there is a table segment e concentric with the table d.
Is mounted with a large diameter tire type special steel roller f.
【０００５】テーブルｄの回転と共に原料粉体は前記セ
グメントｅに流入し、前記ローラｆによって粉砕され
る。With the rotation of the table d, the raw material powder flows into the segment e and is pulverized by the roller f.
【０００６】粉砕された微粉は側面下部に設けられた送
風口ｇから流入する一次空気によって吹き上げられ頂部
に達する。[0006] The pulverized fine powder is blown up by primary air flowing from an air blow port g provided at a lower portion of the side surface and reaches a top portion.
【０００７】頂部には粗粉と微粉を分級する装置ｈがあ
り、分級された微粉は頂部ｂより送出され、粗粉は落下
して原料粉体と混じ、再び粉砕機に達して再粉砕され
る。At the top, there is a device h for classifying coarse powder and fine powder. The classified fine powder is sent out from the top b, and the coarse powder falls and mixes with the raw material powder, reaches the pulverizer again and is reground. You.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、従来の
竪型ミルに於ては、一次空気によって上昇する粉砕され
た粒子と下降する原料粉体が接触し、原料粉体の一部が
吹き上げられて粉砕された粒子に混じ、分級装置ｈに入
ったり、或いは分散装置がないため、粉砕された粒子同
士が再び凝集して粗大粒子となり、そのため分級装置ｈ
の分級効率が著しく低減され、分級性能にも限界があっ
た。However, in the conventional vertical mill, the pulverized particles rising by the primary air come into contact with the descending raw material powder, and a part of the raw material powder is blown up. Since it is mixed with the pulverized particles and enters the classifier h or there is no dispersing device, the pulverized particles aggregate again to form coarse particles, so that the classifier h
The classification efficiency was remarkably reduced, and the classification performance was limited.
【０００９】本発明はかかる欠点を解決し、分級性能の
高い分級装置を提供することを目的としたものである。An object of the present invention is to solve such a drawback and to provide a classifier having a high classification performance.
【００１０】[0010]
【課題を解決するための手段】本発明は下部ケーシング
に分級原料供給口を有すると共に上部ケーシングに微粉
回収口を有する分級装置に於て、下部ケーシングの内側
中央部に設けた皿状の凹部に、下面に分散板を有し上部
外周に分級羽根を有する分級ロータを、下部ケーシング
と該ロータとの間に微少の隙間を維持して回転し得るよ
うに嵌入し、上部ケーシングに粗粉を排出し且つ該粗粉
の排出方向と逆方向にエアを導入する排出口を設けたこ
とを特徴とする分級装置にかかるものである。SUMMARY OF THE INVENTION The present invention relates to a classifying apparatus having a classifying material supply port in a lower casing and a fine powder collecting port in an upper casing. A classifying rotor having a dispersion plate on the lower surface and classifying blades on the upper outer periphery is fitted so as to be able to rotate while maintaining a small gap between the lower casing and the rotor, and coarse powder is discharged to the upper casing. And a discharge port for introducing air in a direction opposite to the discharge direction of the coarse powder.
【００１１】[0011]
【作用】供給口から供給された分級原料は、回転する分
級ロータの下面に設けられた分散板で二次分散され、分
級ロータと下部ケーシングの間の狭い隙間を通過するこ
とによって三次分散され、再凝集した粗大粒子も再び分
散されて細かくなる。The classified raw material supplied from the supply port is secondarily dispersed by a dispersion plate provided on the lower surface of the rotating classification rotor, and tertiary dispersed by passing through a narrow gap between the classification rotor and the lower casing. The re-agglomerated coarse particles are again dispersed and become fine.
【００１２】又粗粉の排出に際して、二次エアを対向さ
せて流すことにより、粗粉に付着した微粉を剥離して回
収するので、微粉の回収率は向上する。Further, when discharging the coarse powder, the secondary air is caused to flow in opposition to separate and collect the fine powder attached to the coarse powder, so that the recovery rate of the fine powder is improved.
【００１３】粗粉の排出口を別に設け、粗粉を粉砕機に
戻すことが出来るので、分級原料と粗粉との干渉がなく
なり、粗粉が分級原料に随伴されて再び分級装置に戻る
ことがない。A separate outlet for coarse powder can be provided to return the coarse powder to the pulverizer, so that interference between the classified raw material and the coarse powder is eliminated, and the coarse powder is accompanied by the classified raw material and returns to the classifier again. There is no.
【００１４】以上のようにして分級装置の分級効率が著
しく向上する。As described above, the classification efficiency of the classification device is significantly improved.
【００１５】[0015]
【実施例】以下、本発明の実施例を図面を参照しつつ説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１６】図１乃至図３は本発明の一実施例であり、
上部ケーシング１の側部上方に微粉の回収口２を設け、
側部下方に粗粉の排出口３を設ける。FIGS. 1 to 3 show an embodiment of the present invention.
A fine powder collection port 2 is provided above a side portion of the upper casing 1,
An outlet 3 for coarse powder is provided below the side.
【００１７】該粗粉の排出口３は、上部より二次エアを
バルブ４を介して分級室５内に流入させ、粗粉は下より
排出してパイプ６により粉砕機に戻す構造とする。The coarse powder discharge port 3 has a structure in which secondary air flows into the classifying chamber 5 from above through a valve 4, and the coarse powder is discharged from below and returned to the crusher by a pipe 6.
【００１８】該排出口３は上部ケーシング１に沿った細
い通路７を介して分級室と連結せしめる。The outlet 3 is connected to a classification chamber through a narrow passage 7 along the upper casing 1.
【００１９】分級装置の下部ケーシング８内側中央に、
皿状の凹部９を設け、該凹部９の中心に分級原料供給口
１０を穿設する。At the center inside the lower casing 8 of the classifier,
A dish-shaped recess 9 is provided, and a classification material supply port 10 is formed at the center of the recess 9.
【００２０】該凹部９に分級ロータ１１を嵌入せしめる
が、該分級ロータ１１は中央部が高いテーパを持った円
板状とし、下面中央部に分散板１２を等間隔で中心より
放射状に配列する。A classifying rotor 11 is fitted into the concave portion 9. The classifying rotor 11 is formed in a disk shape having a high taper at a central portion, and dispersing plates 12 are arranged radially from the center at equal intervals at a lower central portion. .
【００２１】更に上部外周に分級羽根１３を同じく等間
隔、放射状に配列する。Further, the classifying blades 13 are arranged radially at equal intervals on the upper outer periphery.
【００２２】該分級羽根１３には上部に櫛状の凹凸を設
け、該凸部１４が上部ケーシング１に設けたリング状溝
１５に嵌合して回転できるようにする。The classifying blades 13 are provided with comb-like irregularities on the upper portion, and the convex portions 14 are fitted into ring-shaped grooves 15 provided on the upper casing 1 so as to be rotatable.
【００２３】前記分級ロータ１１には中心にロータ軸１
６を設け、該ロータ軸１６は前記分級ロータ１１の下部
の分散板１２が所要の間隔で前記下部ケーシング８の凹
部９に嵌入し、且つ下部ケーシング８と前記分級ロータ
１１の間に微小の隙間を有するように、軸受１７にて軸
支する。The classifying rotor 11 has a rotor shaft 1 at its center.
The rotor shaft 16 is provided with a dispersion plate 12 below the classifying rotor 11 inserted into the concave portion 9 of the lower casing 8 at a required interval, and a small gap between the lower casing 8 and the classifying rotor 11. And is supported by the bearing 17.
【００２４】前記ロータ軸１６の上部ケーシング１外に
突出する端部にプーリ１８を取付け、更にプーリ１８に
ベルト等を介してモータ１９を連結せしめ、前記分級ロ
ータ１１を回転可能とする。A pulley 18 is attached to the end of the rotor shaft 16 protruding outside the upper casing 1, and a motor 19 is connected to the pulley 18 via a belt or the like, so that the classifying rotor 11 can be rotated.
【００２５】以下作動を説明する。The operation will be described below.
【００２６】粉砕機で粉砕された分級原料は、気流に随
伴されて分級装置下部ケーシング８中央の分級原料供給
口１０より分級装置内に流入する。The classified material pulverized by the pulverizer flows into the classifier through the classified material supply port 10 at the center of the lower casing 8 of the classifier along with the airflow.
【００２７】分級ロータ１１を回転させることにより、
流入した分級原料は分級ロータ１１の下面に配置された
分散板１２にあたり、二次分散される。更に分級ロータ
１１が回転しているので分散板１２によって遠心力を与
えられ、外周方向に進む。By rotating the classifying rotor 11,
The flowed classification raw material hits the dispersion plate 12 arranged on the lower surface of the classification rotor 11, and is secondarily dispersed. Further, since the classifying rotor 11 is rotating, a centrifugal force is applied by the dispersion plate 12, and the classifying rotor 11 advances in the outer peripheral direction.
【００２８】分級装置下部ケーシング８と分級ロータ１
１の間には、微小の隙間しかないので、粉体は該隙間を
通るに際して三次分散され、更に分級ロータ１１外周か
ら上部の分級羽根１３に廻り込む。分級羽根１３によっ
て分級された微粉のみが中心部に進み、上昇して回収口
２より回収される。Classification device lower casing 8 and classification rotor 1
Since there is only a small gap between the two, the powder is tertiary dispersed when passing through the gap, and further circulates from the outer periphery of the classification rotor 11 to the upper classification blade 13. Only the fine powder classified by the classification blade 13 advances to the center, rises, and is collected from the collection port 2.
【００２９】粗粉は分級羽根１３に分級され弾かれて上
部ケーシング１の外周に沿って旋回するが、外周部には
排出口３が設けられてあり、粗粉は細い通路７を通って
該排出口３に達し落下する。The coarse powder is classified and repelled by the classifying blades 13 and revolves along the outer periphery of the upper casing 1. The discharge port 3 is provided in the outer peripheral portion, and the coarse powder passes through the narrow passage 7. It reaches the outlet 3 and falls.
【００３０】その際排出口３上部より該通路を通って分
級室５内に向ってエアが導入され、該エアと粗粉は通路
７内で対向的に流れるので、粗粉に付着した微粉は粗粉
と共に分級装置外に排出されることがなく、粗粉より剥
離されて、分級室５内に戻り、回収口２より回収され
る。At this time, air is introduced into the classification chamber 5 from the upper part of the discharge port 3 through the passage, and the air and the coarse powder flow in the passage 7 oppositely. It is not discharged to the outside of the classification device together with the coarse powder, but is separated from the coarse powder, returned to the classification room 5 and recovered from the recovery port 2.
【００３１】上記のようにして粗粉のみが排出されるの
で、微粉のロスが少なくなる。Since only coarse powder is discharged as described above, loss of fine powder is reduced.
【００３２】排出口３より排出された粗粉は、パイプ６
で粉砕機に送られ分級原料と接触、干渉することがない
ので、分級原料に伴なわれて分級原料供給口１０に再供
給されることがない。The coarse powder discharged from the discharge port 3 is
Is not sent to the pulverizer, and does not come into contact with and interfere with the classified raw material, so that it is not re-supplied to the classified raw material supply port 10 with the classified raw material.
【００３３】尚、本発明の分級装置は、上述の実施例に
のみ限定されるものではなく、本発明の要旨を逸脱しな
い範囲内において種々変更を加え得ることは勿論であ
る。Incidentally, the classification device of the present invention is not limited to the above-described embodiment, and it goes without saying that various changes can be made without departing from the scope of the present invention.
【００３４】[0034]
【発明の効果】以上説明したように、本発明の分級装置
によれば、下記の如き種々の優れた効果を奏し得る。As described above, according to the classification device of the present invention, the following various excellent effects can be obtained.
【００３５】分級ロータの下面に分散板を設け、下部
ケーシングと分級ロータの隙間を狭くしたので、分級原
料は分級装置に入ると、分散板で二次分散され、狭い隙
間で三次分散されるため、粉砕後再凝集した粒子も分散
されて微粉に戻り、その後分級されるので分級効率が著
しく向上し、分級精度が大となる。Since a dispersion plate is provided on the lower surface of the classification rotor to narrow the gap between the lower casing and the classification rotor, when the classification material enters the classification device, it is secondarily dispersed by the dispersion plate and tertiarily dispersed by the narrow gap. Also, the particles reagglomerated after the pulverization are dispersed and returned to fine powder, and then classified, so that the classification efficiency is remarkably improved and the classification accuracy is increased.
【００３６】分離された粗粉を回収する際、二次エア
を対向的に流すことにより、粗粉に付着した微粉も剥離
し回収できるので、回収効率が向上する。When the separated coarse powder is collected, fine powder adhering to the coarse powder can be separated and removed by flowing the secondary air in a facing manner, so that the collection efficiency is improved.
【００３７】排出粗粉はパイプで粉砕機に戻され、分
級原料と接触、干渉することがないので、排出粗粉が再
び分級装置に供給されることがない。The discharged coarse powder is returned to the pulverizer by a pipe and does not come into contact with and interfere with the classified raw material, so that the discharged coarse powder is not supplied to the classification device again.
【図１】本発明の一実施例の側断面図である。FIG. 1 is a side sectional view of one embodiment of the present invention.
【図２】図１のＡ−Ａ方向矢視図である。FIG. 2 is a view in the direction of arrows AA in FIG. 1;
【図３】図１のＢ−Ｂ方向矢視図である。FIG. 3 is a view taken in the direction of arrows BB in FIG. 1;
【図４】従来の竪型ミルの側断面図である。FIG. 4 is a side sectional view of a conventional vertical mill.
１ 上部ケーシング ２ 回収口 ３ 排出口 ５ 分級室 ６ パイプ ７ 通路 ８ 下部ケーシング ９ 凹部 １０ 分級原料供給口 １１ 分級ロータ １２ 分散板 １３ 分級羽根 １６ ロータ軸 １７ 軸受 DESCRIPTION OF SYMBOLS 1 Upper casing 2 Recovery port 3 Discharge port 5 Classification chamber 6 Pipe 7 Passage 8 Lower casing 9 Depression 10 Classification material supply port 11 Classification rotor 12 Dispersion plate 13 Classification blade 16 Rotor shaft 17 Bearing
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−56281（ＪＰ，Ａ) 特開 平５−51484（ＪＰ，Ａ) 特開 平６−134401（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B07B 1/00 - 15/00 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-56281 (JP, A) JP-A-5-51484 (JP, A) JP-A-6-134401 (JP, A) (58) Field (Int.Cl. 7 , DB name) B07B 1/00-15/00
Claims (1)
ると共に上部ケーシングに微粉回収口を有する分級装置
に於て、下部ケーシングの内側中央部に設けた皿状の凹
部に、下面に分散板を有し上部外周に分級羽根を有する
分級ロータを、下部ケーシングと該ロータとの間に微少
の隙間を維持して回転し得るように嵌入し、上部ケーシ
ングに粗粉を排出し且つ該粗粉の排出方向と逆方向にエ
アを導入する排出口を設けたことを特徴とする分級装
置。1. A classifying apparatus having a classifying material supply port in a lower casing and a fine powder collecting port in an upper casing, wherein a dispersion plate is provided on a lower surface in a dish-shaped concave portion provided in an inner central portion of the lower casing. A classifying rotor having classifying blades on the upper outer periphery is fitted so as to be able to rotate while maintaining a small gap between the lower casing and the rotor, and the coarse powder is discharged to the upper casing and the coarse powder is discharged. A classifier having a discharge port for introducing air in a direction opposite to the direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33312093A JP3329043B2 (en) | 1993-12-27 | 1993-12-27 | Classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33312093A JP3329043B2 (en) | 1993-12-27 | 1993-12-27 | Classifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07185466A JPH07185466A (en) | 1995-07-25 |
| JP3329043B2 true JP3329043B2 (en) | 2002-09-30 |
Family
ID=18262520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33312093A Expired - Fee Related JP3329043B2 (en) | 1993-12-27 | 1993-12-27 | Classifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3329043B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624304B (en) * | 2015-01-06 | 2017-02-22 | 西南石油大学 | Impact shear grinding rock crusher |
-
1993
- 1993-12-27 JP JP33312093A patent/JP3329043B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07185466A (en) | 1995-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5094391A (en) | Pneumatic classifier | |
| JP2792576B2 (en) | Vertical crusher | |
| US7028847B2 (en) | High efficiency two-stage dynamic classifier | |
| JP3329043B2 (en) | Classifier | |
| JPH0751629A (en) | Classifier for vertical roller mill | |
| JPS641182B2 (en) | ||
| JP2755338B2 (en) | Crushing equipment | |
| JPH06142615A (en) | Classifying equipment | |
| JP3482669B2 (en) | Classifier | |
| JPH0576793A (en) | Pulverizing equipment | |
| JP2839117B2 (en) | Vertical crusher | |
| JPH0739772A (en) | Roller mill having rotary classifier built therein | |
| JP3147143B2 (en) | Vertical crusher | |
| JP2570708Y2 (en) | Vertical crusher | |
| JP2897903B2 (en) | Classifier | |
| JPH04256449A (en) | Vertical crusher | |
| JPH01270982A (en) | Air separator | |
| JPH05277445A (en) | Free vortex type centrifugal classifier of vertical mill | |
| JPH11276920A (en) | Method and device for pulverizing and classifying granular raw material by vertical mill | |
| JPH0551484U (en) | Three-way classifier | |
| JPS62176556A (en) | Sorter for powdered and granular body of vertical type crusher | |
| JPH03221158A (en) | Vertical mill | |
| JPH06142613A (en) | Classifying device | |
| JP2005205266A (en) | Pulverizer | |
| JPH06269738A (en) | Classifying equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080719 Year of fee payment: 6 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080719 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090719 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090719 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100719 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110719 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110719 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120719 Year of fee payment: 10 |
|
| LAPS | Cancellation because of no payment of annual fees |