JPH0584448A - Vertical grinder - Google Patents
Vertical grinderInfo
- Publication number
- JPH0584448A JPH0584448A JP31871591A JP31871591A JPH0584448A JP H0584448 A JPH0584448 A JP H0584448A JP 31871591 A JP31871591 A JP 31871591A JP 31871591 A JP31871591 A JP 31871591A JP H0584448 A JPH0584448 A JP H0584448A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- rotary table
- vibration mode
- raw material
- variable speed
- 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)
- Disintegrating Or Milling (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,石灰石,スラグ,クリンカ,セメン
ト原料や化学品などの原料を粉砕する竪型粉砕機に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical crusher for crushing raw materials such as limestone, slag, clinker, cement raw materials and chemicals in cooperation with a rotary table and a pulverizing roller.
【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5
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の下部において定速モータ2K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. 5 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 is driven by the speed reducer 2K by the constant speed motor 2K and rotates at a low speed, and is pressed by hydraulic pressure or the like to a portion equally dividing the outer peripheral portion of the upper surface in the circumferential direction. And a plurality of crushing rollers 4 which are driven to rotate.
【0003】粉砕ローラ4はケーシング15に回転軸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出す排
出口,17は原料投入シュートである。The crushing roller 4 has a casing 15 and a rotating shaft 6
Is connected to a piston rod 10 of a hydraulic cylinder 9 via an arm 5 and an arm 7 which are swingably supported by, and by operating the hydraulic cylinder 9, the crushing roller 4 is pressed onto the rotary table 3A. To give crushing pressure to the raw materials. 3B is a dam ring provided on the outer peripheral edge 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 feeding chute 17 receives the centrifugal force in the radial direction of the rotary table 3A and slides on the rotary table 3A. At times, the rotary table 3A receives a force in the rotation direction, and the rotary table 3A
It slides with A and performs 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 the crushing roller 4 and the rotary table 3A from a direction forming an angle with the roller axial direction and is bitten. It is crushed and crushed.
【0005】一方,ケーシング15の基部にはダクトに
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1
5内を上昇し,上部に位置するセパレータ13の羽根1
3A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, at the base of the casing 15, gas such as air or hot air is introduced by a duct,
This gas blows up from the annular space portion 14 between the outer peripheral surface of the rotary table 3A and the inner peripheral surface of the casing, so that the pulverized fine powder is entrained in the gas and the casing 1
5, the blade 1 of the separator 13 that is located in the upper part
The product having a predetermined particle size is subjected to the classification action by 3A and is discharged together with the gas from the discharge port 16 and sent to the next step.
【0006】[0006]
【発明が解決しようとする課題】上記のごとき従来の竪
型粉砕機においては,粉砕機の回転テーブル3A上に落
下した原料が首尾よく粉砕ローラ4へ当接して噛込まれ
るためには,原料に適度の摩擦係数が必要であり,表面
がつるつるした滑らかな性状を有する摩擦係数の小さな
原料の場合には粉砕ローラ4を回転テーブル3Aに向け
て強く押し付けても両者の間に介在する原料は脇へ逃げ
て有効な粉砕力を原料に与えることができない。こうし
た摩擦係数の小さな原料は概ね含有水分が少ないので,
予め原料含有水分を適正な値に調整することによって摩
擦係数を上昇させねばならない。こうした原料含有水分
が少なく摩擦係数の小さい原料のうち,特に比較的被粉
砕性の悪い物性を有する原料を超微粉砕する場合には,
ミル振動が頻発することが多く,振動値(振幅)が特に
大きい場合には機器の損傷や運転不能に陥って止むなく
運転休止に追い込まれることがあった。In the conventional vertical crusher as described above, in order for the raw material dropped on the rotary table 3A of the pulverizer to be successfully brought into contact with the pulverizing roller 4 and to be bitten, the raw material is In the case of a raw material having a smooth surface with a smooth surface and a small friction coefficient, even if the crushing roller 4 is strongly pressed toward the rotary table 3A, the raw material interposed between the two is It is not possible to escape to the side and give effective crushing power to the raw material. Raw materials with a small coefficient of friction generally contain less water, so
The coefficient of friction must be increased by adjusting the water content of the raw material to an appropriate value in advance. Of these raw materials with low water content and low friction coefficient, especially those with relatively poor pulverizability,
Mill vibration often occurs, and when the vibration value (amplitude) is particularly large, the equipment may be damaged or operation may stop, and the machine may be forced to suspend operation.
【0007】このように運転中ミル振動値が通常の値で
ある片振幅50μmよりもはるかに大きな値となり,し
かもこの状態が継続するときには,早急にミル振動値を
低下させるための何らかの措置を講じなければならな
い。その手段としては,たとえば,粉砕機へ供給する原
料を一時的に減少させるとか,ミル通風量を増加させ
る,あるいは,原料に水分を加える,ミル運転を停止す
る等の対応策がとられていた。しかしながら,原料の供
給量減少やミル運転休止は処理能力の低下を招き,ミル
通風量の増加は製品の粒度が粗大化して製品品質が低下
し,水分添加による摩擦係数の改善は製品水分が増加し
て製品品質の悪化を招くなどいずれも2次的な悪影響を
与えることになっていた。As described above, when the vibration value of the mill during operation becomes much larger than the normal value of 50 μm of one-sided amplitude, and when this state continues, some measure is taken to reduce the vibration value of the mill immediately. There must be. As a means for that, for example, the raw material supplied to the crusher is temporarily reduced, the air flow of the mill is increased, water is added to the raw material, or the mill operation is stopped. .. However, a decrease in the supply of raw materials and suspension of mill operation lead to a decrease in processing capacity. An increase in air flow through the mill results in coarser product grain size, resulting in lower product quality. Improving the friction coefficient by adding moisture increases product moisture. Then, the quality of the product is deteriorated, which in turn has a secondary adverse effect.
【0008】また,竪型粉砕機の振動は大別すると,一
過性振動と自励性振動とに分けられ,一過性振動は図6
に示すように単発的で振幅も小さく短時間で収束する。
これに対して,自励性振動は“びびり振動”とも呼ば
れ,図7に示すように,一旦振動が始まると,かなりの
時間持続し振幅も大きく,機器の破損や粉砕効率の低下
を招き,極端な場合は運転不能に陥る事態となる。The vibrations of the vertical crusher are roughly classified into transient vibrations and self-excited vibrations. The transient vibrations are shown in FIG.
As shown in, the amplitude is small and the amplitude is small and converges in a short time.
On the other hand, the self-excited vibration is also called “chatter vibration”, and as shown in FIG. 7, once the vibration starts, it lasts for a considerable time and the amplitude is large, which causes damage to the equipment and lowers the grinding efficiency. , In extreme cases, it becomes impossible to operate.
【0009】[0009]
【課題を解決するための手段】以上のような課題を解決
するために,本発明の竪型粉砕機においては,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,該粉砕ローラを該回転テーブルへ押圧する油圧力
可変の油圧手段を備え,該回転テーブル中央部に供給し
た原料を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,ケーシングに振動計を装着
するとともに,回転テーブル駆動用の電動機を可変速電
動機とし,前記振動計によって記録した振動波形(振動
モード)と予め設定した数種類の振動波形(振動モー
ド)とを比較して指定した振動波形(振動モード)とほ
ぼ合致したとき,該可変速電動機の回転数を低下させる
制御装置を備えた構成とした。In order to solve the above problems, in the vertical crusher of the present invention, a plurality of rotatable crushing rollers are arranged on the upper surface of the outer peripheral portion of the rotary table. A vertical pulverizer equipped with hydraulic means for varying the oil pressure for pressing the crushing roller against the rotary table and crushing the raw material supplied to the central part of the rotary table between the upper surface of the rotary table and the peripheral surface of the crushing roller is A vibrometer was attached and the motor for driving the rotary table was a variable speed motor, and the vibration waveform recorded by the vibrometer (vibration mode) was compared with several preset vibration waveforms (vibration mode) and designated. When the vibration waveform (vibration mode) substantially matches, the control device is provided to reduce the rotation speed of the variable speed motor.
【0010】[0010]
【作用】本発明の竪型粉砕機においては,竪型粉砕機の
ケーシングに装着した振動計で刻々計測された振動波形
(振動モード)と予め設定した振動モードとを比較し,
指定した振動モードにほぼ合致したときのみ,可変速電
動機のコントローラに指令を発して回転数を低下させる
ことによって振動値の低減を図る。振動対策を必要とす
る指定モードは,いわゆる自励性振動(びびり振動)で
あり,それ以外の振幅の小さい一過性の振動に対しては
アクションを採らないでもやがて鎮静化するので問題は
ない。In the vertical crusher of the present invention, the vibration waveform (vibration mode) measured momentarily by the vibrometer attached to the casing of the vertical crusher is compared with the preset vibration mode,
The vibration value is reduced by issuing a command to the controller of the variable-speed motor to reduce the rotation speed only when the specified vibration mode is approximately met. The designated mode that requires vibration countermeasures is so-called self-excited vibration (chatter vibration), and other transient vibrations with small amplitude will be calmed down without action, so there is no problem. ..
【0011】[0011]
【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4は本発明の実施例に係る竪
型粉砕機を示し,図1は竪型粉砕機のフローシート,図
2は制御装置の制御ブロック線図,図3は1実施例を示
す制御系統図,図4は他の実施例を示す制御系統図であ
る。図において,1は竪型粉砕機,2Aは回転テーブル
駆動用の可変速電動機,2Bは可変速電動機2A用のコ
ントローラ,9Aは粉砕ローラ4緊張用の油圧手段であ
る油圧シリンダ9の油圧ユニット,9Bは圧力計,60
は原料コンベヤ,70は原料ホッパ,80はコンスタン
トフィード・ウェア,80aは同用可変速電動機,80
bはコンスタントフィード・ウェア80の秤量機,90
は集塵装置,100は吸引ファン,140は振動計,1
50は制御装置であり,制御装置150には,図2に示
すように,内部に設定器,制御器(調節器と操作器),
増幅器が収納されている。竪型粉砕機1本体の各機器は
従来技術で説明したとおりのものであり,その説明を省
略する。Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 4 show a vertical crusher according to an embodiment of the present invention, FIG. 1 is a flow sheet of the vertical crusher, FIG. 2 is a control block diagram of a control device, and FIG. 3 shows one embodiment. Control system diagram, FIG. 4 is a control system diagram showing another embodiment. In the figure, 1 is a vertical crusher, 2A is a variable speed electric motor for driving a rotary table, 2B is a controller for the variable speed electric motor 2A, 9A is a hydraulic unit of a hydraulic cylinder 9 which is a hydraulic means for tensioning the crushing roller 4, 9B is a pressure gauge, 60
Is a raw material conveyor, 70 is a raw material hopper, 80 is a constant feed ware, 80a is a variable speed electric motor for the same, 80
b is a constant feed ware 80 weighing machine, 90
Is a dust collector, 100 is a suction fan, 140 is a vibrometer, 1
Reference numeral 50 denotes a control device, and the control device 150 includes a setting device, a control device (regulator and operation device), as shown in FIG.
The amplifier is stored. Each device of the main body of the vertical crusher 1 is as described in the related art, and its description is omitted.
【0012】次に,制御装置150の作動について説明
する。図2に示すように,タイマで設定された時間間隔
毎に刻々測定される振動計140の測定結果,可変速電
動機2Aの回転数,粉砕ローラ4緊張用油圧シリンダ9
の圧力計9Bの緊張圧力の情報が電気信号に変換されて
制御装置150へ入力される。この3つの情報(振動
値,回転数,緊張圧力)のうち振動波形(振動モード)
と予め設定器に入力されている指定の振動モードとを比
較器で比較し,測定の振動モードが指定の振動モードに
合致したときには,制御器を介して可変速電動機2Aの
回転数を制御して回転テーブル3Aの回転数を増減す
る。設定器には指定振動モード,標準回転数,標準緊張
油圧を入れておく。制御器は調節器と操作器とから構成
され,調節器は振動モードや振動値(最大振幅)と設定
値との差異に応じて回転テーブル駆動用の可変速電動機
2Aの回転数の増減の幅を指示するもので,その制御動
作には比例動作(P動作),積分動作(I動作),微分
動作(D動作),比例積分動作(PI動作),比例微分
動作(PD動作)等,振動値の変化の状況に応じて使い
分けることができる。調節器は,以上のほか,振動の設
定値に対する測定値の越え方に応じて回転数を減少させ
る幅や緊張油圧を減少させる幅を指示する役割も有す
る。操作器はこの調節器からの指示に基づいて可変速電
動機2Aのコントローラ2Bや油圧ユニット9Aへ動作
指令を伝達する。図中の矢印のついた線は信号の流れを
示す。Next, the operation of the controller 150 will be described. As shown in FIG. 2, the measurement result of the vibrometer 140, which is measured at every time interval set by the timer, the rotation speed of the variable speed motor 2A, the crushing roller 4, and the tensioning hydraulic cylinder 9
Information of the tension pressure of the pressure gauge 9B is converted into an electric signal and input to the control device 150. Vibration waveform (vibration mode) of these three information (vibration value, rotation speed, tension pressure)
And a specified vibration mode input to the setting device in advance are compared by a comparator, and when the measured vibration mode matches the specified vibration mode, the rotational speed of the variable speed electric motor 2A is controlled via the controller. To increase or decrease the rotation speed of the turntable 3A. The specified vibration mode, standard rotation speed, and standard tension hydraulic pressure are put in the setter. The controller is composed of an adjuster and an operating device, and the adjuster is a range of increase / decrease of the rotation speed of the variable speed electric motor 2A for driving the rotary table according to the difference between the vibration mode and the vibration value (maximum amplitude) and the set value. Vibrations such as proportional action (P action), integral action (I action), derivative action (D action), proportional integral action (PI action), proportional derivative action (PD action), etc. It can be used properly according to the change situation of the value. In addition to the above, the controller also has a role of instructing the width of decreasing the rotational speed and the width of decreasing the tension hydraulic pressure according to how the measured value exceeds the set value of vibration. The operation unit transmits an operation command to the controller 2B of the variable speed electric motor 2A and the hydraulic unit 9A based on the instruction from the controller. The lines with arrows in the figure show the flow of signals.
【0013】図3は本発明の1実施例を示す制御系統の
流れを示し,運転中タイマによって指示された時間間隔
で,振動計測が行なわれ,振動値や振動モードが設定値
と比較され,一致またはほぼ一致するときには,可変速
電動機2Aの回転数を減少する。また,測定振動モード
が指定振動モードと一致せず,振動値が低いときには回
転数が標準値より低いとき回転数を増加し,標準回転数
に達していればそのままの運転を継続する。以上のよう
に振動が激しいときには回転数を低減して振動の鎮静化
を図り,振動が収まった時点で回転数をもとの標準値に
戻すのが,図3に示す制御方法である。FIG. 3 shows a flow of a control system showing one embodiment of the present invention. Vibration measurement is performed at a time interval designated by a running timer, and a vibration value and a vibration mode are compared with a set value. When they match or almost match, the rotation speed of the variable speed electric motor 2A is decreased. When the measured vibration mode does not match the specified vibration mode and the vibration value is low and the rotation speed is lower than the standard value, the rotation speed is increased, and if the standard rotation speed is reached, the operation is continued as it is. As described above, when the vibration is severe, the rotation speed is reduced to reduce the vibration, and when the vibration is stopped, the rotation speed is returned to the original standard value, which is the control method shown in FIG.
【0014】一方,図4は他の実施例を示し,振動の発
生に伴って回転数のほかに緊張油圧をもコントロールす
る制御を示す制御系統図である。すなわち,測定した振
動波形,振動値を指定の振動モードと比較し,指定モー
ドと一致またはほぼ一致するとき油圧シリンダ9の緊張
油圧が指定の範囲より低ければ回転テーブル駆動用の可
変速電動機2Aの回転数を減少し,緊張油圧が指定範囲
より低くなければ油圧力を減少する。一方,振動値が低
く振動モードが指定のものと異なるときには,緊張油圧
が指定範囲以下であれば油圧力を増加し,緊張油圧が指
定範囲内であれば回転数の低下をカバーして増加させ
る。図4の場合の制御は,振動の発生に際しては油圧力
と回転数の2項目の操作を行ない,振動の程度に応じて
油圧力変更操作と回転数変更操作を使い分けるもので,
粉砕原料の種類に応じて振動の鎮静化に効果のある方を
主体に制御する。上記の振動モードの指定モードは,い
ずれも,図7に示したような自励性振動モードとする
が,このほかにも中程度の振動モードを指定して,これ
に対する操作を実施しても良い。On the other hand, FIG. 4 shows another embodiment, and is a control system diagram showing a control for controlling not only the rotational speed but also the tension hydraulic pressure as the vibration occurs. That is, the measured vibration waveform and the measured vibration value are compared with the designated vibration mode. Decrease the rotation speed and reduce the hydraulic pressure unless the tension hydraulic pressure is lower than the specified range. On the other hand, when the vibration value is low and the vibration mode is different from the specified one, the hydraulic pressure is increased if the tension hydraulic pressure is below the specified range, and if the tension hydraulic pressure is within the specified range, the decrease in rotational speed is covered and increased. .. The control in the case of FIG. 4 is to perform two operations of oil pressure and rotation speed when vibration occurs, and to selectively use oil pressure changing operation and rotation speed changing operation according to the degree of vibration.
Depending on the type of crushed raw material, the one that is effective in suppressing vibration is mainly controlled. The specified vibration mode is the self-excited vibration mode as shown in FIG. 7, but in addition to this, even if a moderate vibration mode is specified and an operation for this is performed, good.
【0015】上記2つの制御操作における供給原料の増
減は,いずれもミル内圧力損失に応じて供給量を加減す
る。これは,ミル内差圧となるようコンスタントフィー
ド・ウェア80の可変速電動機80aの回転数を増減す
るものである。The increase and decrease of the feed material in the above two control operations both adjust the supply amount according to the pressure loss in the mill. This is to increase or decrease the rotation speed of the variable speed electric motor 80a of the constant feed wear 80 so that the differential pressure in the mill is achieved.
【0016】以上のようなフィードバック機構を有する
自動制御を実施することにより,振動値が急激に増加し
て,しかもこの状態が継続されるときには,速やかにこ
の状態を改善するために油圧力を低下したり,回転数を
下げたりすることによって,原料の噛込みや粉砕作用が
改善され,もとの安定した運転状態にもどすことができ
る。By performing the automatic control having the feedback mechanism as described above, when the vibration value sharply increases and this state is continued, the oil pressure is reduced in order to promptly improve this state. By lowering the rotation speed or lowering the rotation speed, the biting and crushing action of the raw material is improved, and the original stable operating state can be restored.
【0017】[0017]
【発明の効果】以上の説明から明らかなように,本発明
の竪型粉砕機においては,運転中に振動値が大きくなっ
てこれが継続しやがて運転不能に陥る前に,自動的に回
転テーブル回転数を変更して異常振動の継続を抑制し,
もとの安定した運転状態に復帰する。また,異常振動が
停止したあと,自動的に標準の操作状態に戻すことによ
って粉砕量の低下を防止し,長期安定連続運転が確保さ
れ,メインテナンス性,運転操作性,生産効率が改善さ
れる。As is apparent from the above description, in the vertical crusher of the present invention, the rotary table is automatically rotated before the vibration value becomes large during operation and the vibration value continues and eventually becomes inoperable. Change the number to suppress the continuation of abnormal vibration,
Return to the original stable operating condition. In addition, after abnormal vibration is stopped, it automatically returns to the standard operating state to prevent a reduction in the crushing amount, ensuring long-term stable continuous operation, and improving maintenance, operability, and production efficiency.
【図1】本発明の実施例を示す竪型粉砕機のフローシー
トである。FIG. 1 is a flow sheet of a vertical crusher showing an embodiment of the present invention.
【図2】本発明の実施例に係る制御装置の制御ブロック
線図である。FIG. 2 is a control block diagram of the control device according to the embodiment of the present invention.
【図3】本発明の竪型粉砕機の1実施例を示す制御系統
図である。FIG. 3 is a control system diagram showing one embodiment of a vertical crusher of the present invention.
【図4】本発明の竪型粉砕機の他の実施例を示す制御系
統図である。FIG. 4 is a control system diagram showing another embodiment of the vertical crusher of the present invention.
【図5】従来の竪型粉砕機の全体縦断面図である。FIG. 5 is an overall vertical sectional view of a conventional vertical crusher.
【図6】従来の竪型粉砕機の振動状態(一過性振動)図
である。FIG. 6 is a vibration state (transient vibration) diagram of a conventional vertical crusher.
【図7】従来の竪型粉砕機の振動状態(自励性振動)図
である。FIG. 7 is a vibration state (self-excited vibration) diagram of a conventional vertical crusher.
1 竪型粉砕機 2 減速機 2A 可変速電動機 2K 定速電動機 3A 回転テーブル 4 粉砕ローラ 5 アーム 9 油圧シリンダ 9A 油圧ユニット 9B 圧力計 15 ケーシング 60 原料コンベヤ 70 原料ホッパ 80 コンスタントフィード・ウェア 80a 可変速電動機 80b 秤量機 90 集塵装置 100 吸引ファン 140 振動計 150 制御装置 1 Vertical Grinder 2 Reducer 2A Variable Speed Motor 2K Constant Speed Motor 3A Rotary Table 4 Grinding Roller 5 Arm 9 Hydraulic Cylinder 9A Hydraulic Unit 9B Pressure Gauge 15 Casing 60 Raw Material Conveyor 70 Raw Material Hopper 80 Constant Feed Wear 80a Variable Speed Electric Motor 80b Weighing machine 90 Dust collector 100 Suction fan 140 Vibrometer 150 Controller
Claims (1)
転自在な粉砕ローラを配置し,該粉砕ローラを該回転テ
ーブルへ押圧する油圧力可変の油圧手段を備え,該回転
テーブル中央部に供給した原料を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, ケーシングに振動計を装着するとともに,回転テーブル
駆動用の電動機を可変速電動機とし,前記振動計によっ
て記録した振動波形(振動モード)と予め設定した数種
類の振動波形(振動モード)とを比較して指定した振動
波形(振動モード)とほぼ合致したとき,該可変速電動
機の回転数を低下させる制御装置を備えてなる竪型粉砕
機。1. A rotary table is provided with a plurality of rotatable crushing rollers on an upper surface of an outer peripheral portion thereof, and a hydraulic means having a variable oil pressure for pressing the crushing rollers against the rotary table is provided, and is supplied to a central portion of the rotary table. In a vertical crusher that crushes the raw material between the upper surface of the rotary table and the peripheral surface of the crushing roller, a vibrometer was installed in the casing, and the motor for driving the rotary table was a variable speed electric motor. A vibration waveform (vibration mode) is compared with several preset vibration waveforms (vibration mode), and when the vibration waveform (vibration mode) substantially matches the specified vibration waveform, a control device that reduces the rotation speed of the variable speed motor is provided. A vertical crusher equipped.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31871591A JPH0584448A (en) | 1991-09-27 | 1991-09-27 | Vertical grinder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31871591A JPH0584448A (en) | 1991-09-27 | 1991-09-27 | Vertical grinder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0584448A true JPH0584448A (en) | 1993-04-06 |
Family
ID=18102169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31871591A Pending JPH0584448A (en) | 1991-09-27 | 1991-09-27 | Vertical grinder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0584448A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007007593A (en) * | 2005-07-01 | 2007-01-18 | Ube Machinery Corporation Ltd | Operating method of vertical pulverizer and vertical pulverizer |
JP2008178837A (en) * | 2007-01-26 | 2008-08-07 | Ube Machinery Corporation Ltd | Vertical grinder and its control method |
US8443867B2 (en) | 2009-12-28 | 2013-05-21 | Bridgestone Corporation | Casting method and casting device for cast-metal object |
CN104918707A (en) * | 2013-01-16 | 2015-09-16 | 西门子公司 | Drive control method and drive system operating according to said method |
-
1991
- 1991-09-27 JP JP31871591A patent/JPH0584448A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007007593A (en) * | 2005-07-01 | 2007-01-18 | Ube Machinery Corporation Ltd | Operating method of vertical pulverizer and vertical pulverizer |
JP2008178837A (en) * | 2007-01-26 | 2008-08-07 | Ube Machinery Corporation Ltd | Vertical grinder and its control method |
US8443867B2 (en) | 2009-12-28 | 2013-05-21 | Bridgestone Corporation | Casting method and casting device for cast-metal object |
CN104918707A (en) * | 2013-01-16 | 2015-09-16 | 西门子公司 | Drive control method and drive system operating according to said method |
US10118181B2 (en) | 2013-01-16 | 2018-11-06 | Siemens Aktiengesellschaft | Drive control method and drive system operating according to said method |
US10556238B2 (en) | 2013-01-16 | 2020-02-11 | Siemens Aktiengesellschaft | Drive control method and drive system operating according to said method |
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