JP2681854B2 - Crushing equipment - Google Patents

Crushing equipment

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Publication number
JP2681854B2
JP2681854B2 JP9036992A JP9036992A JP2681854B2 JP 2681854 B2 JP2681854 B2 JP 2681854B2 JP 9036992 A JP9036992 A JP 9036992A JP 9036992 A JP9036992 A JP 9036992A JP 2681854 B2 JP2681854 B2 JP 2681854B2
Authority
JP
Japan
Prior art keywords
ball mill
vertical crusher
crushing
air flow
raw material
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
Application number
JP9036992A
Other languages
Japanese (ja)
Other versions
JPH05245406A (en
Inventor
肇 浅川
貴志 佐々木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ube Corp
Original Assignee
Ube Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP9036992A priority Critical patent/JP2681854B2/en
Publication of JPH05245406A publication Critical patent/JPH05245406A/en
Application granted granted Critical
Publication of JP2681854B2 publication Critical patent/JP2681854B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明はセメントクリンカや高炉
スラグなど各種化学品の原料の粉砕設備に係り,竪型粉
砕機とボールミルによる粉砕が効率良く行なわれ,消費
動力が少なく,負荷変動に直ちに対応できる粉砕設備に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crushing facility for raw materials of various chemical products such as cement clinker and blast furnace slag, which is efficiently crushed by a vertical crusher and a ball mill, consumes less power, and immediately responds to load fluctuations. Regarding crushing equipment that can be used.

【0002】[0002]

【従来の技術】従来,セメントクリンカや高炉スラブな
どの化学品を粉砕する粉砕設備は,ボールミルが使用さ
れ,たとえば,図6に示すように,ホッパ100の原料
をコンスタントフィード・ウエア200で切り出して,
ボールミル1000へ供給し,粉砕産物をサイクロンセ
パレータ1100まで抽気ファン1300(1200は
風量制御弁)により空気搬送し,サイクロンセパレータ
1100で分級して粗粉を循環経路1400を介してボ
ールミル1000へ戻して再粉砕し,微粉のみ製品とし
て取出す,いわゆる,クローズド・サーキット(閉回
路)運転で生産する。この場合には,ボールミル100
0のみで最終製品とするため,ボールミル1000は2
室以上に区分し,順次大径から小径の粉砕媒体(ボー
ル)で粉砕することが必要であり,ボールミルの構造が
複雑になるばかりでなく,また,粉砕動力が大きいとい
う欠点もあった。
2. Description of the Related Art Conventionally, a ball mill has been used as a crushing facility for crushing chemicals such as cement clinker and blast furnace slab. For example, as shown in FIG. 6, the raw material of the hopper 100 is cut out by a constant feed wear 200. ,
It is supplied to the ball mill 1000, and the pulverized product is pneumatically conveyed to the cyclone separator 1100 by an extraction fan 1300 (1200 is an air volume control valve), classified by the cyclone separator 1100, and the coarse powder is returned to the ball mill 1000 via the circulation path 1400 to be recycled. It is crushed and only fine powder is taken out as a product, which is produced by a so-called closed circuit operation. In this case, the ball mill 100
Ball mill 1000 has 2
It is necessary to divide into more than one chamber and grind with a grinding medium (ball) with a large diameter to a small diameter one by one, which not only complicates the structure of the ball mill but also has a drawback that the grinding power is large.

【0003】一方,粉砕効率がボールミルよりも優れて
おり,比較的粗い製品を生産するのに適している竪型粉
砕機1を予備粉砕機にして使用する,たとえば,図7に
示す粉砕設備も従来から使用されており,この場合に
は,ホッパ100の原料をコンスタントフィード・ウエ
ア200で竪型粉砕機1へ供給し,粉砕産物をすべて排
出してボールミル1000へ供給して2次粉砕する。2
次粉砕後の粉粒体はサイクロンセパレータ1100へ輸
送機300を介して運搬し,分級したあと粗粉をボール
ミル1000へ戻して再粉砕するとともに微粉は集塵装
置600で回収して製品とする。700は風量制御弁,
800は抽気ファンである。図7の粉砕設備も図6と同
様に閉回路運転であるが,原料を予備粉砕するためボー
ルミル1000は1室でよく,ボールミル自体の設備費
は安価であるが,予備粉砕機として竪型粉砕機1が必要
であるからトータルの設備費は図6のものより大である
が,ランニングコストは低いという利点がある。
On the other hand, the vertical crusher 1 which has a higher crushing efficiency than the ball mill and is suitable for producing a relatively coarse product is used as a preliminary crusher. For example, the crushing equipment shown in FIG. 7 is also used. It has been used conventionally, and in this case, the raw material of the hopper 100 is supplied to the vertical crusher 1 by the constant feed wear 200, and all the crushed products are discharged and supplied to the ball mill 1000 for secondary crushing. 2
The powder particles after the subsequent pulverization are conveyed to the cyclone separator 1100 via the transporter 300, and after being classified, the coarse powder is returned to the ball mill 1000 to be re-pulverized, and the fine powder is collected by the dust collector 600 to be a product. 700 is an air volume control valve,
800 is an extraction fan. The crushing equipment of FIG. 7 also operates in a closed circuit as in FIG. 6, but the ball mill 1000 needs only one chamber for preliminarily crushing the raw material, and the equipment cost of the ball mill itself is low, but it is a vertical crusher as a preliminary crusher. Since the machine 1 is required, the total equipment cost is higher than that of FIG. 6, but there is an advantage that the running cost is low.

【0004】[0004]

【発明が解決しようとする課題】従来のボールミルのみ
による粉砕設備ではボールミルが2室以上に区分し,各
々粉砕媒体であるボール径を変えて2段粉砕を行なう必
要があり,構造が複雑となって設備費が大きくなるばか
りでなく,消費動力も大きく電力原単位(kwh/t)
が高くなり効率的な粉砕が困難であった。また,図7の
ように,竪型粉砕機を予備粉砕機として使用し,仕上粉
砕機としてボールミルを使用する粉砕設備においては,
ボールミルのみの粉砕設備に比べて省エネルギ効果はあ
るけれども,竪型粉砕機における粉砕産物を全量ボール
ミルへ投入するので,竪型粉砕機の粉砕で既に最終製品
の粒度に達した微粉までが,ボールミルでの粉砕作用を
受けることになり,過粉砕となって最終製品の中へ混入
することになり,粉砕効率の点でも最終製品の品質の点
でも不都合を生じる。さらに,竪型粉砕機とボールミル
とを連結して粉砕する粉砕設備では,ボールミルの負荷
が変動してボールミルの負荷が過大となったり逆に過小
となったときに,その状況に対応して竪型粉砕機の排出
量を制御して原料の流れをバランス良くコントロールす
ることが困難であった。
In the conventional crushing equipment using only the ball mill, the ball mill is divided into two or more chambers, and it is necessary to perform the two-step crushing by changing the diameter of the ball as the crushing medium, which complicates the structure. Not only increases equipment costs but also consumes a large amount of electricity, which is a basic unit of electric power (kwh / t)
However, it was difficult to efficiently pulverize. Further, as shown in FIG. 7, in the pulverizing equipment that uses the vertical pulverizer as the preliminary pulverizer and the ball mill as the finishing pulverizer,
Although it has an energy saving effect compared to the ball mill only, the whole amount of the crushed products from the vertical crusher is put into the ball mill, so even the fine powder that has already reached the final product particle size by crushing with the vertical crusher can be used in the ball mill. As a result, the powder is subjected to the crushing action in the above, and it becomes over-crushed and is mixed into the final product, which causes problems in terms of the crushing efficiency and the quality of the final product. Furthermore, in the crushing equipment that crushes by connecting the vertical crusher and the ball mill, when the load of the ball mill fluctuates and the load of the ball mill becomes excessive or, on the contrary, becomes too small, It was difficult to control the flow of raw materials in good balance by controlling the discharge amount of the die crusher.

【0005】[0005]

【課題を解決するための手段】以上述べたような課題を
解決して,粉砕機の負荷変動に即応し安定した連続操業
が可能でランニングコストの低い粉砕設備を得るため
に,本発明の粉砕設備においては,原料ホッパとコンス
タントフィード・ウエアとからなる原料輸送設備と,頂
部に回転式セパレータを内蔵する竪型粉砕機と,該竪型
粉砕機から排出された粉粒体の輸送機と,該粉粒体を竪
型粉砕機へ戻す循環経路と,該竪型粉砕機における分級
後の微粉を集塵機へ移送する微粉経路と,集塵機と,吸
引ファンならびに該吸引ファンの風量制御弁と,該集塵
機で捕集された微粉を供給され粉砕するボールミルと,
該ボールミルの粉砕産物を分級するエアセパレータと,
該エアセパレータの分級後の粗粉を該ボールミルへ戻す
循環経路と,抽気ファンならびに該抽気ファンの風量制
御弁とからなる粉砕設備であって,前記ボールミルの運
転動力値が予め設定された値を越えたときに前記吸引フ
ァンの風量制御弁に操作指令を発して風量を変更させる
制御装置を備えた構成とした。
[Means for Solving the Problems] In order to solve the above-mentioned problems and to obtain a crushing facility which can respond to the load fluctuation of the crusher, can perform stable continuous operation, and has a low running cost, In the equipment, a raw material transportation equipment consisting of a raw material hopper and a constant feed wear, a vertical crusher having a rotary separator built in the top, and a transporter of powder particles discharged from the vertical crusher, A circulation path for returning the powder or granular material to the vertical crusher, a fine powder path for transferring the fine powder after classification in the vertical crusher to a dust collector, a dust collector, a suction fan and an air flow control valve for the suction fan, A ball mill that feeds and pulverizes the fine powder collected by the dust collector,
An air separator for classifying the pulverized products of the ball mill,
A crushing equipment comprising a circulation path for returning the coarse powder after classification of the air separator to the ball mill, an extraction fan and an air flow control valve of the extraction fan, and the operation power value of the ball mill is set to a preset value. When the air flow rate is exceeded, a control device for issuing an operation command to the air flow control valve of the suction fan to change the air flow is provided.

【0006】[0006]

【作用】本発明の粉砕設備においては,ボールミルに負
荷変動が生じて,たとえば,負荷が急に増大したときに
は,ボールミル駆動用電動機の電力計の指示値の電気信
号が制御装置へ送られ,予め設定された上限値と比較さ
れこの値を越えた場合その程度に応じて制御装置から吸
引ファンの上流に設置した風量制御弁へ開度を下げる指
令信号が発信され,吸引風量が滅少する。これによっ
て,微粉経路を流れる竪型粉砕機から排出される微粉量
が減少する結果,ボールミルへ供給される原料量は減少
しボールミル負荷過重の状態が解消される。逆に,ボー
ルミルの負荷が下がり過ぎて制御装置に予め入力してい
る下限値以下に電力値が下がったときには,吸引ファン
風量は増加され,ボールミルへの供給原料を増加する。
In the crushing equipment of the present invention, when the load on the ball mill fluctuates and, for example, the load suddenly increases, an electric signal of the indicated value of the wattmeter of the electric motor for driving the ball mill is sent to the control device in advance. When this value is compared with the set upper limit value and the value exceeds this value, the controller sends a command signal to decrease the opening degree to the air volume control valve installed upstream of the suction fan according to the degree, and the suction air volume decreases. As a result, the amount of fine powder discharged from the vertical pulverizer flowing through the fine powder path is reduced, and as a result, the amount of raw material supplied to the ball mill is reduced and the overloaded state of the ball mill is eliminated. On the contrary, when the load of the ball mill is too low and the electric power value is lower than the lower limit value input in advance to the control device, the suction fan air volume is increased and the feed material to the ball mill is increased.

【0007】[0007]

【実施例】以下図面に基づいて本発明の粉砕設備の詳細
について説明する。図1〜図5は本発明に係る実施例を
示し,図1は粉砕設備のフローシート,図2は粉砕設備
の制御系統図,図3は制御装置のブロック線図,図4は
竪型粉砕機の全体縦断面図,図5は竪型粉砕機の要部縦
断面図である。図において,100は原料ホッパ,20
0はコンスタントフィード・ウエア,1は竪型粉砕機,
300はバケットエレベータ等の輸送機,400は輸送
機300と竪型粉砕機1とを連結する循環経路で通常の
ベルトコンベヤやシュートなどが用いられる。500は
微粉経路,600は集塵機,700は風量制御弁,80
0は吸引ファン,1000はボールミル,1100はサ
イクロンセパレータ,1200は風量制御弁,1300
は抽気ファン,1400は循環経路である。また,20
00はボールミル1000の駆動用電動機1000aな
らびに風量制御弁700の駆動部に連結された制御装
置,60は竪型粉砕機1に各々取付けられた圧力計60
a,60bの圧力差を計測する差圧計で制御装置210
0を経由して,コンスタントフィード・ウエア200の
可変速電動機200aのコントローラに接続される。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The crushing equipment of the present invention will be described in detail below with reference to the drawings. 1 to 5 show an embodiment according to the present invention, FIG. 1 is a flow sheet of a crushing equipment, FIG. 2 is a control system diagram of the crushing equipment, FIG. 3 is a block diagram of a control device, and FIG. 4 is vertical crushing. FIG. 5 is a vertical sectional view of an essential part of the vertical crusher. In the figure, 100 is a raw material hopper, 20
0 is constant feed wear, 1 is a vertical crusher,
300 is a transportation machine such as a bucket elevator, 400 is a circulation path connecting the transportation machine 300 and the vertical crusher 1, and a normal belt conveyor or chute is used. 500 is a fine powder path, 600 is a dust collector, 700 is an air flow control valve, 80
0 is a suction fan, 1000 is a ball mill, 1100 is a cyclone separator, 1200 is an air volume control valve, 1300.
Is an extraction fan, and 1400 is a circulation path. Also, 20
00 is a control device connected to the driving motor 1000a of the ball mill 1000 and the drive unit of the air volume control valve 700, and 60 is a pressure gauge 60 attached to each vertical crusher 1.
The control device 210 is a differential pressure gauge that measures the pressure difference between a and 60b.
0 is connected to the controller of the variable speed electric motor 200a of the constant feed wear 200.

【0008】本発明の粉砕設備で使用される竪型粉砕機
1は,図4に示すように,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。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圧を調整する
ダムリング,14は回転テーブル3A周囲の環状空間通
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はガスとともに製品を取出すガス
排出口,17は原料投入シュートである。また,60a
と60bは竪型粉砕機1内の圧力検出口に取付けられた
圧力計である。
The vertical crusher 1 used in the crushing equipment of the present invention is, as shown in FIG. 4, a disk-shaped rotation which is driven at a low speed by a speed reducer 2 by a motor 2A in a lower portion of a cylindrical casing 15. The table 3A is provided with a plurality of crushing rollers 4 which are pressed against each other by hydraulic pressure or the like and are driven to rotate at locations where the outer peripheral portion of the upper surface is equally divided in the circumferential direction. The crushing roller 4 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 a shaft 15 on a casing 15, and by operating the hydraulic cylinder 9, 4 turntable 3A
It is pressed upwards to give crushing pressure to the raw material. 3B is a dam ring provided on the outer peripheral edge of the rotary table 3A for adjusting the layer pressure of the raw material, 14 is an annular space passage around the rotary table 3A, 13 is a rotary separator for classifying the raw material pulverized by the blades 13A, 16 is a gas separator. A gas outlet 17 for taking out the product is a raw material input chute. Also, 60a
Reference numerals 60b are pressure gauges attached to the pressure detection ports in the vertical crusher 1.

【0009】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. Sometimes the rotary table 3A receives a force in the direction of rotation,
A slides with A and makes a rotation somewhat slower than the rotation speed of the turntable 3A. The above two forces, that is, the force in the radial direction and the force in the rotational direction are synthesized, and the raw material is
A moves to the outer periphery of the turntable 3A in a spiral locus on A. Since a roller is pressed against this outer peripheral portion and rotated, the raw material describing the spiral enters the crushing roller 4 and the rotary table 3A from a direction forming an angle with the roller axis direction and is caught. Rarely crushed.

【0010】一方,ケーシング15の基部にはダクト1
4A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15の内周面との間の環状空間通路14から吹上がる
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,所定粒度の粉粒体
はガスとともに排出口16から排出され次の工程へ送ら
れる。
On the other hand, the duct 1 is provided at the base of the casing 15.
A gas such as air or hot air is guided by 4A, and this gas blows up from an annular space passage 14 between the outer peripheral surface of the rotary table 3A and the inner peripheral surface of the casing 15, thereby crushing fine powder. Rises inside the casing 15 together with the gas, and the separator 13
The powder particles having a predetermined particle size are discharged together with the gas from the discharge port 16 and sent to the next step by being classified by the blades 13A.

【0011】また,図5に示すように,回転テーブル3
Aの外周下側には,回転テーブル3Aをオーバフローし
て環状空間通路14へ落下した原料を集めて機外へ排出
するための排出シュート40が設けられ,ベルトコンベ
ヤ50により搬送される。40aは回転テーブル3Aに
取付けられたスクレーパである。
Further, as shown in FIG. 5, the rotary table 3
Below the outer periphery of A, a discharge chute 40 for collecting and discharging the raw materials that have overflowed the rotary table 3A and dropped into the annular space passage 14 to the outside of the machine, is conveyed by the belt conveyor 50. 40a is a scraper attached to the rotary table 3A.

【0012】以上のように構成された本発明の竪型粉砕
機1の作動について説明する。原料投入シュート17か
ら供給された原料は,回転する回転テーブル3Aの遠心
力により渦巻状に外周側へ向かって移動し,粉砕ローラ
4と回転テーブル3Aとの間に噛込んで粉砕される。原
料のうち粉砕ローラ間を通り抜けた粒子は,ダムリング
3Bを越え回転テーブル3Aをオーバフローするが,微
粉は環状空間通路14を上昇して来る上昇気流でセパレ
ータ13へ運ばれ,あるいはその途中で自由落下し,再
び回転テーブルへ戻され,回転方向下流にある次の粉砕
テーブル3Aに噛込まれて粉砕される。また,上昇気流
に打ち克って重力により落下した比較的粒径の大きい粗
粒はスクレーパ40aに掻き寄せられ,排出シュート4
0を経由してベルトコンベヤ50にて機外へ搬送される
か,あるいは直接排出シュート40から下流の輸送機3
00へ移送される。
The operation of the vertical crusher 1 of the present invention having the above-described structure will be described. The raw material supplied from the raw material charging chute 17 spirally moves toward the outer peripheral side by the centrifugal force of the rotating rotary table 3A, and is caught between the crushing roller 4 and the rotary table 3A to be crushed. The particles of the raw material that have passed between the crushing rollers overflow the dam ring 3B and overflow the rotary table 3A, but the fine powder is carried to the separator 13 by the ascending airflow rising in the annular space passage 14, or is free in the middle thereof. It drops, is returned to the rotary table again, and is crushed by being bitten by the next crushing table 3A located downstream in the rotation direction. Further, the coarse particles having a relatively large particle diameter that have overcome the rising air current and dropped due to gravity are scraped by the scraper 40a, and the discharge chute 4
0 is conveyed to the outside of the machine by the belt conveyor 50 or is directly transported from the discharge chute 40 to the transport machine 3 downstream.
Transferred to 00.

【0013】次に,本発明の粉砕設備の作動について説
明する。ホッパ100の原料はコンスタントフィード・
ウエア200によって切り出され,竪型粉砕機1に供給
されて粉砕され,粗粒は輸送機300,循環経路400
を経由して再度竪型粉砕機1で粉砕される。粉砕された
微粉は吸引ファン800に導かれた気体とともに微粉経
路500を経て,集塵機600で捕集された後ボールミ
ル1000へ供給され,2次粉砕される。粉砕された粉
体は抽気ファン1300によってボールミル出口を流れ
る空気に随伴してエアセパレータ1100へ入り,分級
後の粗粉は循環経路1400を経て再びボールミル10
00における粉砕作用を受け,分級後の微粉は捕集され
て製品とされる。竪型粉砕機1の微粉はすべてボールミ
ル1000の供給原料となるので,分級点は竪型粉砕機
のみで最終製品とする場合に比べて粗くし,大部分の粗
粒は外部循環させるため,通常の竪型粉砕機の場合(全
量竪型粉砕機内蔵のセパレータで分級後の微粉として排
出する内部循環方式)に比べて上昇気流流量は少なくし
ておく。
Next, the operation of the crushing equipment of the present invention will be described. The material of hopper 100 is constant feed
It is cut out by the wear 200, supplied to the vertical crusher 1 and crushed, and the coarse particles are transported by the transport machine 300 and the circulation path 400.
And is pulverized again by the vertical pulverizer 1. The pulverized fine powder passes through the fine powder path 500 together with the gas guided to the suction fan 800, is collected by the dust collector 600, is then supplied to the ball mill 1000, and is secondarily pulverized. The pulverized powder enters the air separator 1100 along with the air flowing through the outlet of the ball mill by the extraction fan 1300, and the coarse powder after the classification passes through the circulation path 1400 and the ball mill 10 again.
The fine powder after classification is collected into a product by being subjected to a crushing action in 00. Since all of the fine powder of the vertical crusher 1 becomes the feed material for the ball mill 1000, the classification point is made coarser than the case where only the vertical crusher is used as the final product, and most of the coarse particles are circulated externally. Compared with the vertical crusher of (the internal circulation method in which all the particles are discharged as fine powder after classification with a separator built in the vertical crusher), the ascending air flow rate is set smaller.

【0014】本発明の粉砕設備では竪型粉砕機1とボー
ルミル1000とがシリーズとして連結されており,竪
型粉砕機1の過負荷に対しては原料供給量を直ちに減ら
して対応可能であるが,ボールミル1000に負荷変動
が生じて過負荷となった場合には,竪型粉砕機への原料
供給量を減らしてもタイムラグが有るので間に合わず緊
急時の対応としては不適当である。そこで,本発明にお
ける粉砕設備においては,次のような制御を行なう。図
2に示すように,ボールミル1000に負荷変動,たと
えば,過負荷となった場台,過負荷状態をキャッチする
手段として刻々変化するボールミル駆動用の電力値(k
w値)を採用する。すなわち,刻々計測する電力の測定
値は制御装置2000へ送信される。制御装置2000
の作動について説明すると,図3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電力値の測定
結果が電気信号に変換されて制御装置2000へ入力さ
れ,この情報(ボールミル駆動用電動機の電力値)と予
め設定器に入力されている上限および下限の設定値と比
較され,設定値の範囲を逸脱している場合には制御器を
介して吸引ファン800の手前の風量制御弁700の弁
開度を制御して竪型粉砕機通風量を変更する。制御器は
調節器と操作器とから構成され,調節器は測定値と設定
値との差異に応じて弁開度の変更割合の幅を指示するも
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,ボールミルの負
荷変動の頻度や程度に応じて使い分けることができる。
操作器はこの調節器からの指示に基づいて風量制御弁7
00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。このようにして,ボールミル1000
が過負荷となったとき,風量制御弁700がその過負荷
の程度に応じて閉方向に弁開度が変更され,竪型粉砕機
1の通風量が減少する結果,集塵機600の捕集微粉の
量が減ってボールミル供給量が減少しボールミル過負荷
は改善される。逆にボールミルの負荷が一定限度以下の
場合にもボールミル供給量が増加してこの状態が改善さ
れる。
In the crushing equipment of the present invention, the vertical crusher 1 and the ball mill 1000 are connected in series, and an overload of the vertical crusher 1 can be dealt with by immediately reducing the raw material supply amount. In the case where the ball mill 1000 is overloaded due to load fluctuations, there is a time lag even if the amount of raw material supplied to the vertical crusher is reduced, and it is not suitable for emergency situations. Therefore, the following control is performed in the crushing equipment of the present invention. As shown in FIG. 2, the ball mill 1000 has a power value for driving the ball mill (k that changes momentarily as a means for catching load fluctuations such as an overloaded stand and an overloaded state).
w value) is adopted. That is, the measured value of the power measured moment by moment is transmitted to the control device 2000. Control device 2000
As shown in FIG. 3, the measurement result of the electric power value measured at every time interval set by the timer is converted into an electric signal and input to the control device 2000, and this information (ball mill driving (The electric power value of the electric motor for driving) is compared with the upper and lower set values inputted in advance to the setter, and if the set value is out of the range, the air flow control in front of the suction fan 800 is performed via the controller. The valve opening of the valve 700 is controlled to change the ventilation amount of the vertical crusher. The controller is composed of a controller and a controller. The controller indicates the range of the rate of change of the valve opening according to the difference between the measured value and the set value, and the control operation is proportional to the operation (P Motion), integral motion (I motion), differential motion (D motion), proportional integral motion (PI)
Motion), proportional differential motion (PD motion), etc., depending on the frequency and degree of load fluctuation of the ball mill.
Based on the instructions from this controller, the controller controls the air volume control valve 7
The operation command is transmitted to 00. The line with the arrow in the figure indicates the signal flow. In this way, the ball mill 1000
When the load is overloaded, the air flow control valve 700 changes the valve opening in the closing direction according to the degree of overload, and as a result, the air flow rate of the vertical crusher 1 decreases, and as a result, the dust collected by the dust collector 600 is collected. And the ball mill supply is reduced and ball mill overload is improved. On the contrary, even when the load of the ball mill is below a certain limit, the supply amount of the ball mill increases and this state is improved.

【0015】以上のようなボールミル1000の負荷変
動が設定限度範囲を逸脱したときボールミル1000へ
の供給量が変更されるが,それに伴って竪型粉砕機1の
運転状態を変更する必要がある。すなわち,竪型粉砕機
1の上下端の圧力差を差圧計60で検知し,この差圧を
前記した制御装置2000と同様な働きを持つ制御装置
2100を介してコンスタントフィード・ウエア200
の供給量を制御して変更することによりボールミルの負
荷変動に対応して竪型粉砕機1の運転状態を適正にコン
トロールすることができる。制御装置2100は制御装
置2000と一緒にして代用することも出来る。
When the load fluctuation of the ball mill 1000 deviates from the set limit range as described above, the supply amount to the ball mill 1000 is changed, and the operating state of the vertical crusher 1 must be changed accordingly. That is, the pressure difference between the upper and lower ends of the vertical crusher 1 is detected by the differential pressure gauge 60, and the constant pressure wear 200 is detected through the control device 2100 having the same function as the control device 2000 described above.
It is possible to properly control the operating state of the vertical crusher 1 in response to load fluctuations of the ball mill by controlling and changing the supply amount of. The controller 2100 can be substituted with the controller 2000.

【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,ボールミルの負荷が急
に増加したり,逆に負荷が軽くなって運転に余力が生じ
たりしたとき,上記の自動操作により直ちにもとの安定
した運転状態にもどすことができるほか,粉砕機を定格
状態で使用する時間が持続するから粉砕効率が向上す
る。また,ボールミルの粉砕媒体が小径化できるととも
に,リダクション・レシオ(粉砕比)が小さくなるから
ボールミルの能力が向上する。
By performing the automatic control having the feedback mechanism as described above, when the load of the ball mill suddenly increases or, conversely, when the load becomes light and there is a surplus in the operation, the automatic operation described above is performed. In addition to being able to immediately return to the original stable operating condition, the crushing efficiency is improved because the crusher is used for the rated time. In addition, the diameter of the ball mill grinding media can be reduced, and the reduction ratio (grinding ratio) is reduced, improving the ball mill's performance.

【0017】[0017]

【発明の効果】以上の説明から明らかなように,本発明
の粉砕設備においては,ボールミルの負荷変動に自動的
に対応して供給量を増減することによりもとの安定した
運転に復帰するから運転操作性が向上するとともに,ボ
ールミル能力がアップし,粉砕効率が向上する。また,
2次粉砕機であるボールミルへ供給する原料粒度を1次
粉砕機(予備粉砕機)である竪型粉砕機のセパレータで
コントロールできるため,最終製品の過粉砕を防止で
き,所望の粒度構成の最終製品が得やすい。
As is apparent from the above description, in the crushing equipment of the present invention, the original stable operation is restored by automatically increasing or decreasing the supply amount in response to the load fluctuation of the ball mill. The operability is improved, the ball mill capacity is improved, and the grinding efficiency is improved. Also,
The particle size of the raw material supplied to the ball mill, which is the secondary crusher, can be controlled by the separator of the vertical crusher, which is the primary crusher (preliminary crusher). The product is easy to obtain.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施例に係る粉砕設備のフローシート
である。
FIG. 1 is a flow sheet of a crushing facility according to an embodiment of the present invention.

【図2】本発明の実施例に係る粉砕設備の制御系統図で
ある。
FIG. 2 is a control system diagram of the crushing equipment according to the embodiment of the present invention.

【図3】本発明の実施例に係る粉砕設備の制御装置のブ
ロック線図である。
FIG. 3 is a block diagram of a control device for a crushing facility according to an embodiment of the present invention.

【図4】本発明の実施例に係る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 vertical crusher according to an embodiment of the present invention.

【図5】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. 5 is a longitudinal sectional view of a main part of a vertical crusher according to an embodiment of the present invention.

【図6】従来の粉砕設備のフローシートである。FIG. 6 is a flow sheet of a conventional crushing facility.

【図7】従来の粉砕設備のフローシートである。FIG. 7 is a flow sheet of a conventional crushing facility.

【符号の説明】[Explanation of symbols]

1 竪型粉砕機 3A 回転テーブル 4 粉砕ローラ 40 排出シュート 40a スクレーパ 50 ベルトコンベヤ 60 差圧計 60a 圧力計 60b 圧力計 100 原料ホッパ 200 コンスタントフィード・ウエア 200a 可変速電動機 300 輸送機 400 循環経路 500 微粉経路 600 集塵機 700 風量制御弁 800 吸引ファン 1000 ボールミル 1000a 電動機 1100 エアセパレータ 1200 風量制御弁 1300 抽気ファン 1400 循環経路 2000 制御装置 2100 制御装置 1 Vertical grinding machine 3A Rotary table 4 Grinding roller 40 Discharging chute 40a Scraper 50 Belt conveyor 60 Differential pressure gauge 60a Pressure gauge 60b Pressure gauge 100 Raw material hopper 200 Constant feed wear 200a Variable speed electric motor 300 Transport machine 400 Circulation path 500 Fine powder path 600 Dust collector 700 Air volume control valve 800 Suction fan 1000 Ball mill 1000a Electric motor 1100 Air separator 1200 Air volume control valve 1300 Extraction fan 1400 Circulation path 2000 Controller 2100 Controller

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 原料ホッパとコンスタントフィード・ウ
エアとからなる原料輸送設備と,頂部に回転式セパレー
タを内蔵する竪型粉砕機と,該竪型粉砕機下部から排出
された粉粒体の輸送機と,該粉粒体を竪型粉砕機へ戻す
循環経路と,該竪型粉砕機における分級後の微粉を集塵
機へ移送する微粉経路と,集塵機と,吸引ファンならび
に該吸引ファンの風量制御弁と,該集塵機で捕集された
微粉を供給され粉砕するボールミルと,該ボールミルの
粉砕産物を分級するエアセパレータと,該エアセパレー
タの分級後の粗粉を該ボールミルへ戻す循環経路と,抽
気ファンならびに該抽気ファンの風量制御弁とからなる
粉砕設備であって,前記ボールミルの運転動力値が予め
設定された値を越えたときに前記吸引ファンの風量制御
弁に操作指令を発して風量を変更させる制御装置を備え
た粉砕設備。
1. A raw material transportation facility comprising a raw material hopper and constant feed wear, a vertical crusher having a rotary separator built in the top thereof, and a transporter for powder particles discharged from the lower portion of the vertical crusher. A circulation path for returning the powder or granular material to the vertical crusher, a fine powder path for transferring fine powder after classification in the vertical crusher to a dust collector, a dust collector, a suction fan and an air flow control valve for the suction fan A ball mill for supplying and pulverizing the fine powder collected by the dust collector, an air separator for classifying the pulverized product of the ball mill, a circulation path for returning coarse powder after classification of the air separator to the ball mill, an extraction fan, and A crushing facility comprising an air flow control valve of the extraction fan, which issues an operation command to the air flow control valve of the suction fan when the operating power value of the ball mill exceeds a preset value. Crushing equipment equipped with a control device that changes the air flow rate.
JP9036992A 1992-02-28 1992-02-28 Crushing equipment Expired - Fee Related JP2681854B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9036992A JP2681854B2 (en) 1992-02-28 1992-02-28 Crushing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9036992A JP2681854B2 (en) 1992-02-28 1992-02-28 Crushing equipment

Publications (2)

Publication Number Publication Date
JPH05245406A JPH05245406A (en) 1993-09-24
JP2681854B2 true JP2681854B2 (en) 1997-11-26

Family

ID=13996645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9036992A Expired - Fee Related JP2681854B2 (en) 1992-02-28 1992-02-28 Crushing equipment

Country Status (1)

Country Link
JP (1) JP2681854B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5559522B2 (en) * 2009-12-04 2014-07-23 株式会社スギノマシン Atomizer
CN114870958B (en) * 2022-06-10 2024-05-07 广东家美陶瓷有限公司 Electronic control system, control method and ball milling pulping method of ceramic continuous ball mill

Also Published As

Publication number Publication date
JPH05245406A (en) 1993-09-24

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