JPH0747296A - Vertical type pulverizer - Google Patents
Vertical type pulverizerInfo
- Publication number
- JPH0747296A JPH0747296A JP19858793A JP19858793A JPH0747296A JP H0747296 A JPH0747296 A JP H0747296A JP 19858793 A JP19858793 A JP 19858793A JP 19858793 A JP19858793 A JP 19858793A JP H0747296 A JPH0747296 A JP H0747296A
- Authority
- JP
- Japan
- Prior art keywords
- rotary table
- raw material
- crushing roller
- crushing
- vertical
- 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.)
- Pending
Links
Landscapes
- Crushing And Grinding (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，回転テーブルと粉砕ロ
ーラとの協働により，セメント原料，スラグ，クリンカ
やセラミック，化学品等の原料を粉砕する竪型粉砕機に
係り，特に粉砕効率の向上を企図した竪型粉砕機に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical crusher for crushing raw materials such as cement raw materials, slag, clinker, ceramics and chemicals by the cooperation of a rotary table and a pulverizing roller, and particularly, it has a high pulverizing efficiency. The present invention relates to a vertical crusher intended for improvement.
【０００２】[0002]
【従来の技術】石灰石やスラグ，セメント原料などの原
料を細かく粉砕し粉体とする粉砕機の一種として，図４
に示すように，回転テーブルと粉砕ローラとを備えた竪
型粉砕機１が広く用いられている。この種の粉砕機は，
円筒状ケーシング１５の下部においてモータ２Ａにより
減速機２で駆動されて低速回転する円盤状の回転テーブ
ル３Ａと，その上面外周部を円周方向へ等分する箇所に
油圧などで圧接されて従動回転する複数個の粉砕ローラ
４とを備えている。2. Description of the Related Art FIG. 4 is a kind of crusher for pulverizing raw materials such as limestone, slag, and cement raw material into fine powder.
As shown in (1), a vertical crusher 1 having a rotary table and a crushing roller is widely used. This kind of crusher
At the lower part of the cylindrical casing 15, a disk-shaped rotary table 3A driven by a speed reducer 2 by a motor 2A to rotate at a low speed, and hydraulically pressure-contacted with a portion equally dividing the outer peripheral portion of its upper surface in the circumferential direction, and driven to rotate. And a plurality of crushing rollers 4.
【０００３】粉砕ローラ４はケーシング１５に軸６によ
って揺動自在に軸支されたアーム５とアーム７を介して
油圧シリンダ９のピストンロッド１０に連結されてお
り，油圧シリンダ９を作動させることにより，粉砕ロー
ラ４を回転テーブル３Ａ上に押圧して原料への粉砕圧力
を与えている。３Ｂは回転テーブル３Ａの外周縁に設け
られ原料層厚を調整するダムリング，１４は回転テーブ
ル３Ａ周囲のガス吹上用環状空間通路，１４Ａはガス供
給路，１３は羽根１３Ａにより粉砕された原料を分級す
る回転セパレータ，１６はガスと共に製品を取り出す排
出口，１７は原料投入シュートである。The crushing roller 4 is connected to a piston rod 10 of a hydraulic cylinder 9 through an arm 5 and an arm 7 which are pivotally supported by a shaft 6 in a casing 15, and by operating the hydraulic cylinder 9, The crushing roller 4 is pressed against the rotary table 3A to apply a crushing pressure to the raw material. 3B is a dam ring provided on the outer periphery of the rotary table 3A for adjusting the raw material layer thickness, 14 is a gas blowing annular space passage around the rotary table 3A, 14A is a gas supply passage, and 13 is a raw material crushed by blades 13A. A rotary separator for classification, 16 is an outlet for taking out a product together with gas, and 17 is a raw material charging chute.
【０００４】このような竪型粉砕機において，回転テー
ブルの中央部へ原料投入シュート１７で供給された原料
は，回転テーブル３Ａの回転によりテーブル半径方向の
遠心力を受けて回転テーブル３Ａ上を滑るときに回転テ
ーブル３Ａにより回転方向の力を受け，回転テーブル３
Ａとの間で滑って回転テーブル３Ａの回転数よりいくら
か遅い回転を行なう。以上２つの力，すなわち，半径方
向と回転方向の力とが合成され，原料は回転テーブル３
Ａ上を渦巻状の軌跡を描いて回転テーブル３Ａの外周部
へ移動する。この外周部には，ローラが圧接されて回転
しているので，渦巻線を描いた原料は粉砕ローラ４と回
転テーブル３Ａとの間へローラ軸方向とある角度をなす
方向から進入して噛み込まれて粉砕される。In such a vertical crusher, the raw material supplied to the central portion of the rotary table by the raw material chute 17 receives the centrifugal force in the radial direction of the rotary table 3A and slides on the rotary table 3A. Sometimes the rotary table 3A receives a force in the direction of rotation,
It slides with A and makes a rotation somewhat slower than the rotation speed of the rotary table 3A. The above two forces, that is, the radial direction force and the rotational direction force are combined, and the raw material is the rotary table 3.
A spiral locus is drawn on A to move to the outer peripheral portion of the rotary table 3A. Since the roller is pressed against the outer periphery and is rotating, the raw material in which the spiral is drawn enters between the crushing roller 4 and the rotary table 3A from a direction forming an angle with the roller axial direction and is bitten therein. It is crushed and crushed.
【０００５】一方，ケーシング１５の基部には熱風ダク
ト２０によって空気，あるいは熱風などのガスが導かれ
ており，このガスが回転テーブル３Ａの外周面とケーシ
ングの内周面との間の環状空間部１４から吹き上がるこ
とにより，粉砕された微粉体はガスに同伴されてケーシ
ング１５内を上昇し，上部に位置するセパレータ１３の
羽根１３Ａにより分級作用を受け，所定粒度の製品はガ
スと共に排出口１６から排出され次の工程へ送られる。On the other hand, a gas such as air or hot air is introduced into the base of the casing 15 by a hot air duct 20, and this gas is an annular space between the outer peripheral surface of the rotary table 3A and the inner peripheral surface of the casing. By being blown up from 14, the pulverized fine powder is entrained in the gas and rises in the casing 15, and is subjected to the classification action by the blades 13A of the separator 13 located at the upper part, and the product having a predetermined particle size is discharged together with the gas through the discharge port 16 And sent to the next process.
【０００６】[0006]
【発明が解決しようとする課題】このように，従来の竪
型粉砕機では回転テーブルの中央付近に供給された原料
は回転する回転テーブルの遠心力によって渦巻状の軌跡
を画いて回転テーブル外周に向かうが，このとき運良く
粉砕ローラに噛み込まれた原料が粉砕に与り，その他の
大部分の原料は回転テーブル外周に周設されたダムリン
グを通過し，その外側の環状空間通路へ落下し，環状空
間通路を上昇してくる高速の気流に吹き上げられて再び
回転テーブル上へ戻される。力学的なシミュレーション
を行なった結果では，回転テーブル中央に落下した原料
のうち粉砕ローラへ噛み込まれる量率は４ローラでは３
８％程度，２ローラにおいては２５％程度で，大部分の
原料は回転テーブルをオーバフローすることになり，噛
み込み率の低率により粉砕効率が低いという問題があっ
た。As described above, in the conventional vertical crusher, the raw material supplied near the center of the rotary table draws a spiral locus by the centrifugal force of the rotating rotary table, and is drawn on the outer periphery of the rotary table. However, at this time, the raw material that was bitten by the crushing roller participated in the pulverization at this time, and most of the other raw material passed through the dam ring around the rotary table and dropped into the annular space passage outside it. Then, it is blown up by the high-speed air current rising in the annular space passage and returned to the rotary table again. As a result of the dynamic simulation, the ratio of the amount of the raw material dropped in the center of the rotary table to the crushing roller was 3 with 4 rollers.
At about 8% and about 25% for two rollers, most of the raw material overflowed the rotary table, and there was a problem that the grinding efficiency was low due to the low biting rate.
【０００７】[0007]
【課題を解決するための手段】以上の課題を解決し，噛
み込み率を増加して粉砕効率を向上するために，本発明
では，回転テーブルの外周部上面に複数個の回転自在な
粉砕ローラを配置し，回転テーブル上に供給した原料を
粉砕ローラに所定の粉砕圧力を与えて回転テーブル上面
と粉砕ローラ周面との間で粉砕する竪型粉砕機におい
て，回転テーブルの外周に周設されたダムリングの内周
に沿設され，かつ，粉砕ローラの原料噛み込み側に垂直
な壁面を有する曲面板を上下方向昇降自在に配設した構
成とした。In order to solve the above problems and to increase the biting rate and improve the grinding efficiency, in the present invention, a plurality of rotatable grinding rollers are provided on the upper surface of the outer peripheral portion of the rotary table. In a vertical crusher for crushing the raw material supplied on the rotary table between the upper surface of the rotary table and the peripheral surface of the crushing roller by applying a predetermined crushing pressure to the crushing roller. In addition, a curved plate having a wall surface that is arranged along the inner circumference of the dam ring and that is vertical to the raw material biting side of the crushing roller is arranged to be vertically movable.
【０００８】[0008]
【作用】本発明においては，回転テーブル中央に落下し
てから渦巻線を画いて粉砕ローラと粉砕ローラとの間を
すり抜けて回転テーブル外周を逸流する原料は，粉砕ロ
ーラの回転上流側で，ダムリング内周に沿って配設され
た曲面板に当接し，曲面板内周面に沿って粉砕ローラ側
へ移動し，粉砕ローラへ噛み込まれて粉砕される。曲面
板は昇降自在に構成され，粉砕原料の種類，製品粒度に
相応して調整される原料層厚に適合するよう高さ調整さ
れる。In the present invention, the raw material that falls on the center of the rotary table, draws the spiral, passes through between the crushing rollers and flows out of the outer circumference of the rotary table, is the upstream side of the rotation of the crushing rollers. It comes into contact with a curved plate disposed along the inner circumference of the dam ring, moves to the crushing roller side along the inner circumferential surface of the curved plate, and is bitten by the crushing roller and crushed. The curved plate is constructed so that it can be moved up and down, and its height is adjusted to suit the raw material layer thickness adjusted according to the type of pulverized raw material and the product grain size.
【０００９】[0009]
【実施例】以下図面に基づいて本発明の実施例について
詳細に説明する。図１〜図３は本発明の実施例に係り，
図１は竪型粉砕機の要部平面図，図２は竪型粉砕機の要
部縦断面図，図３は竪型粉砕機の粉砕ローラ部の要部側
面図である。図において，回転テーブル３Ａ上の粉砕ロ
ーラ４の回転方向上流側には，ダムリング３Ｂの内周に
ほぼ沿った垂直な曲面を有する曲面板３０が配設され
る。曲面板３０の上端はＴ字状に水平に溶接１体化され
た取付板３０ａが取り付けられ，回転テーブル３Ａの中
心を通り回転テーブル３Ａの直径よりも長い水平な角材
からなるサポート３０ｂにボルト締結により着脱可能に
構成される。サポート３０ｂの両端は各々ミル外へ突出
し，図２に示すように，ケーシング１５に設けた透孔を
貫通し，ケーシング１５の外周壁に固設された垂直な上
下一対の油圧シリンダ４０の各々のピストンロッド先端
に接合される。曲面板３０の高さは１００〜３００ｍｍ
程度で，その範囲は拡がり角にして約４５゜程度とする
が，実情に応じて増減してもよい。図１，図２の実施例
では，２ローラの場合に２つの曲面板３０，３０を共通
のサポート３０ｂによって支持したが，４ローラの場合
にはサポート３０ｂを回転テーブル３Ａ上に懸け渡すス
ペース的な余裕が少ないので，各々の粉砕ローラ４，…
の直前の曲面板３０，…を個別に油圧ユニット４２と接
続された油圧シリンダ４０のロッドから水平にサポート
を張り出し，昇降するようにしてもよい。ケーシング１
５の貫通部は可撓製のゴム板や織布等でエヤーシールさ
れる。なお，上に述べた曲面板３０ならびにその昇降手
段である油圧シリンダ４０以外の竪型粉砕機１の構造は
図４に示すとおり従来技術で述べたものと同一であるか
ら，その詳細説明は省略する。Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 3 relate to an embodiment of the present invention,
1 is a plan view of a main part of a vertical crusher, FIG. 2 is a vertical sectional view of a main part of the vertical crusher, and FIG. 3 is a side view of a main part of a crushing roller part of the vertical crusher. In the figure, a curved plate 30 having a vertical curved surface substantially along the inner circumference of the dam ring 3B is arranged on the rotary table 3A on the upstream side in the rotation direction of the crushing roller 4. The upper end of the curved plate 30 is attached with a T-shaped horizontally welded mounting plate 30a, which is bolted to a support 30b made of a horizontal square member that passes through the center of the rotary table 3A and is longer than the diameter of the rotary table 3A. It is configured to be removable. Both ends of the support 30b respectively project outside the mill, penetrate through the through holes provided in the casing 15, and as shown in FIG. It is joined to the tip of the piston rod. The height of the curved plate 30 is 100 to 300 mm
The range of the spread angle is about 45 °, but it may be increased or decreased depending on the actual situation. In the embodiment of FIGS. 1 and 2, the two curved plates 30 and 30 are supported by the common support 30b in the case of two rollers, but in the case of four rollers, the support 30b is hung on the rotary table 3A. Since there is not much room, each grinding roller 4, ...
The curved plates 30, ... Immediately before the above may be individually extended horizontally from the rod of the hydraulic cylinder 40 connected to the hydraulic unit 42, and moved up and down. Casing 1
The penetrating portion of 5 is air-sealed with a flexible rubber plate or woven fabric. The structure of the vertical crusher 1 other than the above-mentioned curved plate 30 and the hydraulic cylinder 40 that is the lifting means is the same as that described in the prior art as shown in FIG. 4, and therefore its detailed description is omitted. To do.
【００１０】以上のように構成された本発明の竪型粉砕
機１においては，図１に示した回転テーブル３Ａの中心
上の仮想円Ｘに落下した原料のうち，領域Ｓ1 および領
域Ｓ 2 を渦巻状に流れる原料は各々粉砕ローラ４の上流
側に配設した曲面板３０，３０に当接し，曲面板３０の
内周に沿って下流側に流れ，粉砕ローラ４へ噛み込まれ
る。粉砕ローラ４の下流から曲面板３０の上流端までの
領域は主として粉砕された原料粉砕粉末が流れるが，勿
論未だ粉砕に与らない生の原料も流れ，環状空間通路１
４の上昇気流により反転して上方へ空気搬送され，粉末
は竪型粉砕機１の頂部に設置したセパレータ１３で分級
作用を受ける。また，粒径の大きい生の原料や最終製品
までに至らない粗粒は途中で失速して回転テーブル３Ａ
上へアットランダムに落下し，再度粉砕される。曲面板
３０は，図３に示すように，その下端が粉砕ローラ４の
上流側に形成される原料層厚の表面より原料層厚の１０
〜３０％程度沈下した状態に高さ調整し，粉砕条件の変
更に伴って原料層厚が変更したときには，それに連動し
て油圧シリンダ４０の作動により高さ調整する。Vertical crushing of the present invention constructed as described above
In the machine 1, the center of the rotary table 3A shown in FIG.
Of the raw materials that have fallen into the virtual circle X above, the area S1 And territory
Area S 2 The raw materials flowing in a spiral shape are each upstream of the crushing roller 4.
The curved plate 30, which is arranged on the side
It flows to the downstream side along the inner circumference and is caught in the crushing roller 4.
It From the downstream of the crushing roller 4 to the upstream end of the curved plate 30
The crushed raw material crushed powder mainly flows through the area, but
The raw material that has not been used for crushing also flows, and the annular space passage 1
Inverted by updraft of 4 and conveyed by air upward, powder
Is classified by the separator 13 installed at the top of the vertical crusher 1.
Be affected. In addition, raw materials with large particle size and final products
Coarse particles that do not reach the end stall on the way and turntable 3A
It randomly drops upwards and is crushed again. Curved plate
As shown in FIG. 3, the lower end 30 of
From the surface of the raw material layer formed on the upstream side, the raw material layer thickness of 10
Adjust the height so that it sinks about 30%, and change the grinding conditions.
In addition, when the raw material layer thickness changes,
The height is adjusted by the operation of the hydraulic cylinder 40.
【００１１】以上説明したように，本発明の竪型粉砕機
１は粉砕ローラの直前に曲面板を設けて，本来は回転テ
ーブルをオーバフローしていた原料を強制的に粉砕ロー
ラへ噛み込ませるので，噛み込み率が向上し，それにと
もなって粉砕効率がアップする。As described above, in the vertical crusher 1 of the present invention, the curved plate is provided immediately before the crushing roller so that the raw material, which originally overflowed the rotary table, is forcibly inserted into the crushing roller. , The bite rate is improved, and the crushing efficiency is increased accordingly.
【００１２】[0012]
【発明の効果】本発明によれば，粉砕ローラへの原料噛
み込み率を大幅に増大させ，粉砕効率が大幅に向上する
から，粉砕機の生産性が著しく向上する。As described above, according to the present invention, the rate of biting the raw material into the crushing roller is greatly increased and the crushing efficiency is greatly improved, so that the productivity of the crusher is significantly improved.
【図１】本発明の実施例に係る竪型粉砕機の要部平面図
である。FIG. 1 is a plan view of a main part of a vertical crusher according to an embodiment of the present invention.
【図２】本発明の実施例に係る竪型粉砕機の要部縦断面
図である。FIG. 2 is a longitudinal sectional view of a main part of a vertical crusher according to an embodiment of the present invention.
【図３】本発明の実施例に係る竪型粉砕機の粉砕ローラ
部の要部側面図である。FIG. 3 is a side view of a main part of a crushing roller portion of a vertical crusher according to an embodiment of the present invention.
【図４】従来の竪型粉砕機の全体縦断面図である。FIG. 4 is an overall vertical sectional view of a conventional vertical crusher.
１ 竪型粉砕機 ３Ａ 回転テーブル ３Ｂ ダムリング ４ 粉砕ローラ １３ セパレータ １４ 環状空間通路 １５ ケーシング １７ 原料投入シュート ３０ 曲面板 ３０ａ 取付板 ３０ｂ サポート ４０ 油圧シリンダ ４２ 油圧ユニット Ｓ1 領域 Ｓ2 領域 Ｘ 仮想円1 Vertical Grinder 3A Rotating Table 3B Dam Ring 4 Grinding Roller 13 Separator 14 Annular Space Passage 15 Casing 17 Raw Material Injecting Chute 30 Curved Plate 30a Mounting Plate 30b Support 40 Hydraulic Cylinder 42 Hydraulic Unit S 1 Area S 2 Area X Virtual Circle
Claims (1)
転自在な粉砕ローラを配置し，回転テーブル上に供給し
た原料を粉砕ローラに所定の粉砕圧力を与えて回転テー
ブル上面と粉砕ローラ周面との間で粉砕する竪型粉砕機
において，回転テーブルの外周に周設されたダムリング
の内周に沿設され，かつ，粉砕ローラの原料噛み込み側
に垂直な壁面を有する曲面板を上下方向昇降自在に配設
した竪型粉砕機。1. A plurality of rotatable crushing rollers are arranged on an upper surface of an outer peripheral portion of a rotary table, and the raw material supplied onto the rotary table is applied with a predetermined crushing pressure to the crushing roller to provide an upper surface of the rotary table and a peripheral surface of the crushing roller. In a vertical crusher that crushes between the crushing roller and the vertical crusher, a curved plate with a wall surface that is installed along the inner circumference of the dam ring around the outer circumference of the rotary table and that is perpendicular to the raw material biting side of the crushing roller is moved up and down. A vertical crusher that can be moved vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19858793A JPH0747296A (en) | 1993-08-10 | 1993-08-10 | Vertical type pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19858793A JPH0747296A (en) | 1993-08-10 | 1993-08-10 | Vertical type pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0747296A true JPH0747296A (en) | 1995-02-21 |
Family
ID=16393666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19858793A Pending JPH0747296A (en) | 1993-08-10 | 1993-08-10 | Vertical type pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009541027A (en) * | 2006-06-21 | 2009-11-26 | ポリシウス アクチェンゲゼルシャフト | Roller mill |
-
1993
- 1993-08-10 JP JP19858793A patent/JPH0747296A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009541027A (en) * | 2006-06-21 | 2009-11-26 | ポリシウス アクチェンゲゼルシャフト | Roller mill |
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