JPH11197525A - Vertical mill - Google Patents
Vertical millInfo
- Publication number
- JPH11197525A JPH11197525A JP575998A JP575998A JPH11197525A JP H11197525 A JPH11197525 A JP H11197525A JP 575998 A JP575998 A JP 575998A JP 575998 A JP575998 A JP 575998A JP H11197525 A JPH11197525 A JP H11197525A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- gap
- point
- hydraulic cylinder
- rotary table
- 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.)
- Granted
Links
Landscapes
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、石灰石、セメン
ト原料等を回転テーブルとローラの間隙に挟み込み、そ
の圧縮・剪断作用により粉砕する竪型ミルに関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical mill in which limestone, cement raw material and the like are sandwiched in a gap between a rotary table and a roller and pulverized by a compressing / shearing action.
【０００２】[0002]
【従来の技術】竪型ミルの粉砕部では、図４に示すよう
に、モータ等の駆動手段により水平回転する回転テーブ
ル１の上方にローラ２が設けられている。このローラ２
は揺動ブロック３に回転軸４を介して取り付けられ、揺
動ブロック３はその両側から突出した支持軸５によりケ
ーシング（図示省略）に回動自在に支持されている。揺
動ブロック３には上方に突出するアーム部６が設けら
れ、このアーム部６にはケーシングに取り付けられた油
圧シリンダ７の先端部が係合している。油圧シリンダ７
の内部には、ピストン７ａを介して小油圧室７ｂと大油
圧室７ｃとが形成され、ピストン７ａが移動して油圧シ
リンダ７が伸縮すると、揺動ブロック３が支持軸５を中
心に回動してローラ２が昇降し、ローラ２と回転テーブ
ル１の間隙が変化する。支持軸５の変位角は変位計８に
より検出され、その検出値は油圧シリンダ７を制御する
油圧制御機構Ｓの制御装置９に送られる。2. Description of the Related Art In a pulverizing section of a vertical mill, as shown in FIG. 4, a roller 2 is provided above a rotary table 1 which is horizontally rotated by driving means such as a motor. This roller 2
Is mounted on a swing block 3 via a rotary shaft 4, and the swing block 3 is rotatably supported by a casing (not shown) by support shafts 5 protruding from both sides thereof. The swing block 3 is provided with an arm 6 projecting upward, and a tip of a hydraulic cylinder 7 attached to the casing is engaged with the arm 6. Hydraulic cylinder 7
Is formed with a small hydraulic chamber 7b and a large hydraulic chamber 7c via a piston 7a. When the piston 7a moves and the hydraulic cylinder 7 expands and contracts, the swing block 3 rotates about the support shaft 5. Then, the roller 2 moves up and down, and the gap between the roller 2 and the rotary table 1 changes. The displacement angle of the support shaft 5 is detected by a displacement meter 8, and the detected value is sent to a control device 9 of a hydraulic control mechanism S that controls the hydraulic cylinder 7.
【０００３】油圧制御機構Ｓは、油タンク１０からポン
プ１１に吸い込んだ油をチェック弁１２を介して油圧シ
リンダ７の小油圧室７ｂ又は大油圧室７ｃの一方へ選択
的に送り込み、他方の油を油タンク１０へ排出する機能
と、前記油の流路を閉止する機能とを有する切換弁１３
を備えている。The hydraulic control mechanism S selectively sends the oil sucked into the pump 11 from the oil tank 10 to one of the small hydraulic chamber 7b or the large hydraulic chamber 7c of the hydraulic cylinder 7 via the check valve 12, and the other oil. Valve 13 having a function of discharging oil to the oil tank 10 and a function of closing the oil flow path
It has.
【０００４】前記切換弁１３と小油圧室７ｂの間には、
切換弁１３側から順に、パイロットチェック弁１４、流
量調整弁１５、１６及び電磁弁１７が設けられ、流量調
整弁１５、１６のバイパス用として電磁弁１８が設けら
れている。流量調整弁１５、１６は油の流量を絞り込
み、その急激な変動を防止するものである。電磁弁１８
は、通常、閉じておく。また、切換弁１３と大油圧室７
ｃとの間には、切換弁１３側から順に、パイロットチェ
ック弁１９及び電磁弁２０が設けられている。図中、２
１はアキュムレータである。[0004] Between the switching valve 13 and the small hydraulic chamber 7b,
A pilot check valve 14, flow control valves 15, 16 and a solenoid valve 17 are provided in this order from the switching valve 13 side, and a solenoid valve 18 is provided for bypassing the flow control valves 15, 16. The flow control valves 15 and 16 are used to restrict the flow rate of the oil and prevent the oil from suddenly changing. Solenoid valve 18
Is usually kept closed. Also, the switching valve 13 and the large hydraulic chamber 7
The pilot check valve 19 and the solenoid valve 20 are provided between the switching check valve 13 and the switching valve 13 in this order. In the figure, 2
1 is an accumulator.
【０００５】上記のような竪型ミルの運転開始時などに
は、ローラ２と回転テーブル１の間隙を油圧制御機構Ｓ
により所定の値に調整する必要がある。なお、この間隙
には、目標値を中心として上限値と下限値とが設定され
（例えば、目標値＝５ｍｍ、上限値＝５．５ｍｍ、下限
値＝４．５ｍｍ）、調整後の間隙がこの範囲内に収まる
ようにしなければならない。その調整手順を、時間の経
過に対するローラ２と回転テーブル１の間隙の変化を表
した図３を用いて説明する。At the start of operation of the vertical mill as described above, the gap between the roller 2 and the rotary table 1 is changed by the hydraulic control mechanism S.
Needs to be adjusted to a predetermined value. In this gap, an upper limit and a lower limit are set around the target value (for example, target value = 5 mm, upper limit = 5.5 mm, lower limit = 4.5 mm). It must be within range. The adjustment procedure will be described with reference to FIG. 3, which illustrates a change in the gap between the roller 2 and the rotary table 1 over time.
【０００６】上記間隙の調整を行うには、まず、ローラ
２を回転テーブル１上に載置し、その間隙を０とする
（点Ｐ）。次に、ポンプ１１を駆動し、切換弁１３を切
り換え、チェック弁１２、切換弁１３、パイロットチェ
ック弁１４、流量調整弁１５、１６及び電磁弁１７を介
して小油圧室７ｂに給油すると共に、大油圧室７ｃ内の
油を、電磁弁２０、チェック弁１９及び切換弁１３を介
して油タンク１０に排出する。In order to adjust the gap, first, the roller 2 is placed on the turntable 1 and the gap is set to 0 (point P). Next, the pump 11 is driven, the switching valve 13 is switched, and oil is supplied to the small hydraulic chamber 7b via the check valve 12, the switching valve 13, the pilot check valve 14, the flow control valves 15, 16 and the solenoid valve 17, The oil in the large hydraulic chamber 7c is discharged to the oil tank 10 via the solenoid valve 20, the check valve 19, and the switching valve 13.
【０００７】このことにより、小油圧室７ｂの油圧が上
昇してピストン７ａが後退し、揺動ブロック３の上方へ
の回動に伴いローラ２が上昇して、ローラ２と回転テー
ブル１の間隙が拡大する。そして、上記間隙が下限値
（点Ｑ）に達した時点で、切換弁１３を切り換えて油の
流路を閉止し、小油圧室７ｂへの給油と、大油圧室７ｃ
からの排油を停止する。As a result, the hydraulic pressure in the small hydraulic chamber 7b rises, the piston 7a retreats, and the roller 2 rises with the upward rotation of the swing block 3, so that the gap between the roller 2 and the rotary table 1 is increased. Expands. Then, when the gap reaches the lower limit (point Q), the switching valve 13 is switched to close the oil flow path, to supply oil to the small hydraulic chamber 7b and the large hydraulic chamber 7c.
Stop draining oil from.
【０００８】ところで、切換弁１３を閉止状態として
も、ローラ２は慣性により暫く上昇をつづけるが、図３
（Ａ）に示すように、その後の停止時における回転テー
ブル１との間隙が上限値以下であれば（点Ｒ）、図示省
略したストッパボルトを締め付けてローラ２の下降を制
限し、調整作業を終了する。By the way, even when the switching valve 13 is closed, the roller 2 keeps rising for a while due to inertia.
As shown in (A), if the gap with the turntable 1 at the time of the subsequent stop is equal to or less than the upper limit value (point R), the lowering of the roller 2 is restricted by tightening a stopper bolt (not shown), and the adjustment work is performed. finish.
【０００９】しかし、図３（Ｂ）に示すように、ローラ
２の停止時における回転テーブル１との間隙が上限値を
越えていれば（点Ｒ1 ）、間隙の再調整を行わなければ
ならない。この場合、切換弁１３を切り換え、大油圧室
７ｃに給油すると共に、小油圧室７ｂから排油してピス
トン７ａを前進させ、ローラ２を下降させる。そして、
間隙が上限値（点Ｔ）になれば、切換弁１３を切り換
え、油の流路を閉止してローラ２の下降を停止させる。However, as shown in FIG. 3B, if the gap between the rotary table 1 and the roller 2 when the roller 2 stops exceeds the upper limit (point R 1 ), the gap must be readjusted. . In this case, the switching valve 13 is switched to supply oil to the large hydraulic chamber 7c, drain oil from the small hydraulic chamber 7b, advance the piston 7a, and lower the roller 2. And
When the gap reaches the upper limit value (point T), the switching valve 13 is switched, the oil flow path is closed, and the lowering of the roller 2 is stopped.
【００１０】[0010]
【発明が解決しようとする課題】ところで、上記再調整
作業において、停止状態のローラ２を下降させるべく切
換弁１３を切り換え、ピストン７ａが動きだすと、ピス
トン７ａとシリンダ内壁との摩擦が静摩擦から動摩擦に
変化し抵抗が少なくなること、さらに、流量調整弁１
５、１６の前後の圧力差が大きく、油の流量を十分に絞
り込むことができないことから、ローラ２は急激に下降
する。In the re-adjustment work, when the switching valve 13 is switched to lower the stopped roller 2, and the piston 7a starts to move, the friction between the piston 7a and the inner wall of the cylinder changes from static friction to dynamic friction. And the resistance is reduced.
Since the pressure difference between before and after 5 and 16 is large and the flow rate of the oil cannot be sufficiently reduced, the roller 2 drops rapidly.
【００１１】ここで、上記のように流量調整弁１５、１
６の前後に大きな圧力差が生じるのは、大油圧室７ｃの
油圧が十分に大きくなってピストン７ａが動きだすとパ
イロットチェック弁１４が開き、流量調整弁１５、１６
のパイロットチェック弁１４側の圧力はすぐに解放され
るのに対し、小油圧室７ｂ側の圧力は高くなっているか
らである。Here, as described above, the flow control valves 15, 1
The large pressure difference between before and after 6 is caused by the fact that when the hydraulic pressure in the large hydraulic chamber 7c becomes sufficiently large and the piston 7a starts to move, the pilot check valve 14 opens and the flow control valves 15, 16
The pressure on the pilot check valve 14 side is immediately released, while the pressure on the small hydraulic chamber 7b side is high.
【００１２】このため、ローラ２と回転テーブル１の間
隙が上限値（点Ｔ）に達した時点で切換弁１３を閉止状
態に切り換えても、ローラ２はすぐには停止せず、間隙
が下限値を下回った状態（点Ｕ1 ）で停止する。For this reason, even if the switching valve 13 is switched to the closed state when the gap between the roller 2 and the rotary table 1 reaches the upper limit (point T), the roller 2 does not stop immediately, and the gap becomes lower. It stops when the value falls below the value (point U 1 ).
【００１３】そこで、この状態を解消するため、ローラ
２を再び上昇させるべく小油圧室７ｂに給油し、ピスト
ン７ａが動きだすと、上記のような摩擦の変化に加え、
小油圧室７ｂの圧力の急速な低下により流量調整弁１
５、１６の前後に大きな圧力差が生じる。このため、間
隙の下限値（点Ｑ’）で油の流路を閉止しても、ローラ
２はすぐには停止せず、回転テーブル１との間隙が上限
値を越えた状態（点Ｒ2）で停止する。Therefore, in order to eliminate this condition, oil is supplied to the small hydraulic chamber 7b in order to raise the roller 2 again, and when the piston 7a starts to move, in addition to the above-mentioned change in friction,
Due to the rapid decrease in pressure in the small hydraulic chamber 7b, the flow control valve 1
A large pressure difference occurs around 5 and 16. Therefore, even if the oil flow path is closed at the lower limit of the gap (point Q ′), the roller 2 does not stop immediately, and the gap with the rotary table 1 exceeds the upper limit (point R 2). ) To stop.
【００１４】このように、一度間隙調整に失敗すると、
ローラ２の昇降を繰り返しても、間隙を許容範囲内に収
束させることが難しくなる。Thus, once the gap adjustment fails,
Even if the roller 2 is repeatedly moved up and down, it is difficult to make the gap converge within an allowable range.
【００１５】この問題は、流量調整弁１５、１６とし
て、流量変動を抑制する圧力補償機能付きのものを使用
しても、ジャンピング現象が発生することから、十分に
解消することはできない。[0015] This problem cannot be sufficiently solved even if a flow control valve 15 or 16 having a pressure compensating function for suppressing flow fluctuation is used because a jumping phenomenon occurs.
【００１６】そこで、この発明は、ローラと回転テーブ
ルの間隙を確実に調整できる竪型ミルを提供することを
課題とする。Accordingly, an object of the present invention is to provide a vertical mill capable of reliably adjusting a gap between a roller and a rotary table.
【００１７】[0017]
【課題を解決するための手段】上記課題を解決するた
め、この発明では、油圧シリンダを制御してローラと回
転テーブルの間隙を調整する油圧シリンダ制御機構に、
前記間隙が目標値の許容差以内に収まらなかった場合、
その偏差を拡大した後、前記間隙を再度調整する機能を
備えたのである。According to the present invention, there is provided a hydraulic cylinder control mechanism for controlling a hydraulic cylinder to adjust a gap between a roller and a rotary table.
If the gap did not fall within the tolerance of the target value,
After the deviation is enlarged, a function of adjusting the gap again is provided.
【００１８】この機能によると、ローラの昇降速度が緩
やかに安定した状態で油圧シリンダの駆動を停止し、ロ
ーラと回転テーブルの間隙が上限値と下限値の間に収ま
った状態でローラを停止させることができる。According to this function, the operation of the hydraulic cylinder is stopped in a state where the ascending and descending speed of the roller is gently and stably, and the roller is stopped in a state where the gap between the roller and the rotary table is between the upper limit and the lower limit. be able to.
【００１９】[0019]
【発明の実施の形態】以下、図４に示す機器で構成され
た竪型ミルについて、ローラ２と回転テーブル１の間隙
を油圧制御機構Ｓで調整する際、ローラ２が間隙の上限
値を越えて停止した場合における再調整の制御形態を図
１を用いて説明する。BEST MODE FOR CARRYING OUT THE INVENTION In the vertical mill constituted by the equipment shown in FIG. 4, when the gap between the roller 2 and the rotary table 1 is adjusted by the hydraulic control mechanism S, the roller 2 exceeds the upper limit of the gap. A control form of readjustment in the case where the operation stops will be described with reference to FIG.
【００２０】いま、上限値を越えた点Ｒ1 でローラ２が
停止したとき、切換弁１３は閉止状態にある。この状態
から切換弁１３を切り換え、再び小油圧室７ｂに給油す
ると共に、大油圧室７ｃから排油してピストン７ａを後
退させ、ローラ２を上昇させる。[0020] Now, when the roller 2 at a point R 1 exceeding the upper limit is stopped, the switching valve 13 is in a closed state. From this state, the switching valve 13 is switched to supply oil to the small hydraulic chamber 7b again, and to drain oil from the large hydraulic chamber 7c to retreat the piston 7a and raise the roller 2.
【００２１】そして、この状態をタイマにより約５〜１
０秒継続した後、切換弁１３を切り換え、油の流路を閉
止してローラ２の上昇を停止させる。このとき、ローラ
２は、ピストン７ａとシリンダ内壁との静摩擦から動摩
擦への変化等により、最初は急激に上昇するが、次第に
上昇速度が緩やかになり、上限値を大きく越えた点Ｓで
停止する。なお、タイマの設定時間は、ローラ２の上昇
速度が緩やかに安定する時間に適宜調整する。Then, this state is checked by a timer for about 5-1.
After the continuation of 0 seconds, the switching valve 13 is switched to close the oil flow path and stop raising the roller 2. At this time, the roller 2 initially rises sharply due to a change from static friction to dynamic friction between the piston 7a and the inner wall of the cylinder, but gradually rises gradually, and stops at a point S which greatly exceeds the upper limit. . The set time of the timer is appropriately adjusted to a time at which the rising speed of the roller 2 is gradually stabilized.
【００２２】次に、切換弁１３を切り換え、大油圧室７
ｃに給油すると共に、小油圧室７ｂから排油してピスト
ン７ａを前進させ、ローラ２を下降させる。ローラ２は
最初急激に下降するが、ピストン７ａのシリンダ内壁に
対する抵抗が一定となり、小油圧室７ｂの油圧の低下と
共に流量調整弁１５、１６の前後の圧力差が小さくなる
と、次第に緩やかに下降することとなる。この状態でロ
ーラ２が上限値（点Ｔ）に達したとき、切換弁１３を切
り換えて油の流路を閉止すると、ローラ２は下限値を越
えることなく、点Ｕで停止する。Next, the switching valve 13 is switched so that the large hydraulic chamber 7
c, the oil is discharged from the small hydraulic chamber 7b, the piston 7a is advanced, and the roller 2 is lowered. The roller 2 first descends sharply, but gradually descends gradually when the resistance of the piston 7a to the inner wall of the cylinder becomes constant and the pressure difference between the flow regulating valves 15 and 16 decreases as the hydraulic pressure in the small hydraulic chamber 7b decreases. It will be. When the roller 2 reaches the upper limit value (point T) in this state, the switching valve 13 is switched to close the oil flow path, and the roller 2 stops at the point U without exceeding the lower limit value.
【００２３】なお、図３（Ｂ）の点Ｕ1 のように、ロー
ラ２が下限値を越えて停止した場合には、ローラ２をさ
らに下降させた後、再度上昇させるようにするとよい。[0023] Note that as the point U 1 of FIG. 3 (B), when the roller 2 is stopped exceeds the lower limit value, after the roller 2 is further lowered, better to raise again.
【００２４】また、間隙を零点又はその付近に縮小した
後、再調整するようにしてもよい。Further, after the gap is reduced to or near the zero point, the gap may be readjusted.
【００２５】上記調整作業は、竪型ミルに備えられた複
数のローラ２のそれぞれについて行う。The above adjustment work is performed for each of the plurality of rollers 2 provided in the vertical mill.
【００２６】このような機能を油圧制御機構Ｓに組み込
むと、例えば、ローラ２と回転テーブル１の間隙を５ｍ
ｍから７ｍｍに変更する場合など、従来はローラ２を微
量正確に昇降させることができないために困難であった
調整作業を確実に行うことができる。When such a function is incorporated in the hydraulic control mechanism S, for example, the gap between the roller 2 and the rotary table 1 is set to 5 m.
For example, when the roller 2 is changed from m to 7 mm, it is possible to reliably perform an adjustment operation that has conventionally been difficult because the roller 2 cannot be moved up and down with a minute amount of precision.
【００２７】また、図２に示すように、点Ｓでローラ２
を停止させるため、上記タイマーに代えて変位計８を使
用し、ローラ２が上限値からｙｍｍ上昇した点Ｖで切換
弁１３を切り換えて油の流路を閉止するようにしてもよ
い。この場合にも、図１に示すタイマー方式の場合と同
様の機能を得ることができる。Further, as shown in FIG.
In order to stop the oil flow, the displacement meter 8 may be used instead of the timer, and the switching valve 13 may be switched at the point V at which the roller 2 has risen by y mm from the upper limit value to close the oil flow path. In this case, the same function as in the case of the timer method shown in FIG. 1 can be obtained.
【００２８】[0028]
【発明の効果】以上説明したように、この発明に係る竪
型ミルでは、油圧シリンダを制御してローラと回転テー
ブルの間隙を調整する油圧シリンダ制御機構に、前記間
隙が目標値の許容差以内に収まらなかった場合、その偏
差を拡大した後、前記間隙を再度調整する機能を備えた
ので、ローラの昇降速度が緩やかに安定した状態で油圧
シリンダの駆動を停止し、ローラと回転テーブルの間隙
が上限値と下限値の間に収まった状態でローラを停止さ
せることができ、ローラと回転テーブルの間隙を確実に
調整できる。As described above, in the vertical mill according to the present invention, the hydraulic cylinder control mechanism for controlling the hydraulic cylinder to adjust the gap between the roller and the rotary table has the gap within the tolerance of the target value. If it does not fit in, the function of adjusting the gap again after expanding the deviation is provided, so that the drive of the hydraulic cylinder is stopped in a state where the ascent and descent speed of the roller is moderately stable, and the gap between the roller and the rotary table is reduced. Can be stopped in a state where is within the upper limit value and the lower limit value, and the gap between the roller and the rotary table can be reliably adjusted.
【図１】この発明に係る竪型ミルの間隙調整状況を示す
図FIG. 1 is a diagram showing a gap adjustment state of a vertical mill according to the present invention.
【図２】同上の他の方式による間隙調整状況を示す図FIG. 2 is a diagram showing a gap adjustment state according to another method of the above.
【図３】（Ａ）従来の竪型ミルの間隙調整成功状況を示
す図 （Ｂ）同上の失敗状況を示す図FIG. 3 (A) is a diagram showing a successful clearance adjustment of a conventional vertical mill;
【図４】竪型ミルの粉砕部の機器構成を示す図FIG. 4 is a diagram showing a device configuration of a crushing unit of a vertical mill.
１ 回転テーブル ２ ローラ ７ 油圧シリンダ ８ 変位計 ９ 制御装置 １０ 油タンク １１ ポンプ １３ 切換弁 １５、１６ 流量調整弁 DESCRIPTION OF SYMBOLS 1 Rotary table 2 Roller 7 Hydraulic cylinder 8 Displacement meter 9 Control device 10 Oil tank 11 Pump 13 Switching valve 15, 16 Flow control valve
Claims (1)
駆動に伴い昇降するローラを設け、このローラと回転テ
ーブルの間隙を油圧シリンダ制御機構により所定の値に
調整し、その間隙に原料を挟み込んで粉砕する竪型ミル
において、 前記油圧シリンダ制御機構に、ローラと回転テーブルの
間隙が目標値の許容差以内に収まらなかった場合、その
偏差を拡大した後、前記間隙を再度調整する機能を備え
たことを特徴とする竪型ミル。1. A roller which rises and lowers with the driving of a hydraulic cylinder is provided above a rotary table, and a gap between the roller and the rotary table is adjusted to a predetermined value by a hydraulic cylinder control mechanism. In the vertical mill for pulverizing, the hydraulic cylinder control mechanism has a function of adjusting the gap again after enlarging the deviation when the gap between the roller and the rotary table does not fall within the tolerance of a target value. A vertical mill characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00575998A JP3145350B2 (en) | 1998-01-14 | 1998-01-14 | Vertical mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00575998A JP3145350B2 (en) | 1998-01-14 | 1998-01-14 | Vertical mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11197525A true JPH11197525A (en) | 1999-07-27 |
| JP3145350B2 JP3145350B2 (en) | 2001-03-12 |
Family
ID=11620061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00575998A Expired - Fee Related JP3145350B2 (en) | 1998-01-14 | 1998-01-14 | Vertical mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3145350B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008043926A (en) * | 2006-08-21 | 2008-02-28 | Mitsubishi Heavy Ind Ltd | Biomass grinding apparatus and its control method |
| JP2016107205A (en) * | 2014-12-05 | 2016-06-20 | 株式会社Ihi | Grinding device |
| WO2018123697A1 (en) * | 2016-12-29 | 2018-07-05 | 株式会社アーステクニカ | Vertical mill |
-
1998
- 1998-01-14 JP JP00575998A patent/JP3145350B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008043926A (en) * | 2006-08-21 | 2008-02-28 | Mitsubishi Heavy Ind Ltd | Biomass grinding apparatus and its control method |
| JP2016107205A (en) * | 2014-12-05 | 2016-06-20 | 株式会社Ihi | Grinding device |
| WO2018123697A1 (en) * | 2016-12-29 | 2018-07-05 | 株式会社アーステクニカ | Vertical mill |
| JP2018108557A (en) * | 2016-12-29 | 2018-07-12 | 株式会社アーステクニカ | Vertical mill |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3145350B2 (en) | 2001-03-12 |
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