JPH0137972B2 - - Google Patents
Info
- Publication number
- JPH0137972B2 JPH0137972B2 JP58105619A JP10561983A JPH0137972B2 JP H0137972 B2 JPH0137972 B2 JP H0137972B2 JP 58105619 A JP58105619 A JP 58105619A JP 10561983 A JP10561983 A JP 10561983A JP H0137972 B2 JPH0137972 B2 JP H0137972B2
- Authority
- JP
- Japan
- Prior art keywords
- mill
- pressing
- bowl
- supply
- indicating
- 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
Links
- 239000000463 material Substances 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims 6
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 27
- 238000000227 grinding Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、鉛直軸を有するバウルミル
(bowlmill)に係る。本発明のバウルミルに於い
て、バウルは粉砕すべき材料を該バウルの表面に
押圧する押圧手段に対して相対的に回転してお
り、該押圧手段は、粉砕すべき材料に応じて制御
手段により制御されており、押圧手段とバウルと
の間の距離すなわち材料層の高さの検出手段と材
料の供給量の検出手段とが含まれる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bowlmill having a vertical axis. In the bowl mill of the present invention, the bowl rotates relative to the pressing means for pressing the material to be crushed onto the surface of the bowl, and the pressing means is controlled by the control means depending on the material to be crushed. and includes means for detecting the distance between the pressing means and the bowl, ie the height of the material layer, and means for detecting the amount of material supplied.
本出願人によるフランス特許出願公開
第2424065号は、鉛直軸を有する回転バウルと油
圧シリンダによつて粉砕すべき材料に押付けられ
る振り子式サスペンシヨン付のローラとを備えた
ミルを開示している。該特許のミルは、粉砕すべ
き材料に応じてローラの圧力を変更し得るか又は
粉砕中に所定法則に従つてローラの圧力を変更し
得る調整制御回路を含んでおり、更に、油圧シリ
ンダの圧力及び位置の検出手段と検出手段から与
えられたデータに応答し粉砕すべき材料及び任意
に所定法則に従つて油圧シリンダの圧力を決定す
る油圧シリンダの調圧デバイスとを含む。 French patent application No. 2424065 in the name of the applicant discloses a mill with a rotating bowl having a vertical axis and a roller with pendulum suspension which is pressed against the material to be ground by a hydraulic cylinder. The mill of that patent includes a regulating control circuit that can vary the pressure of the rollers depending on the material to be milled or according to a predetermined law during milling, and furthermore includes a control circuit of the hydraulic cylinders. It includes pressure and position sensing means and a hydraulic cylinder pressure regulating device responsive to the data provided by the sensing means to determine the material to be crushed and optionally the pressure in the hydraulic cylinder according to a predetermined law.
しかし乍ら、ミルの1つの作動サイクル中に粒
度及び脆性の如き特性に変化を生じ易い材料が前
記の如きミルによつて処理される場合もしばしば
生じる。粉砕すべき材料がミル内で事実上新しい
性質に達する時点を予想することができないた
め、極めて不利な条件下でミルの作動が継続され
る恐れがある。特に、脆性の小さい材料の性質が
変化して脆性の大きい材料となるときにローラが
材料中にはまりこみ抜けなくなる恐れがある。こ
れにより振動が生じるか又はミルの作動の急激な
停止が生じることもある。従つてローラを抜き出
しローラの位置を再度調整しないとミルの作動を
再開することができない。逆に、脆性の大きい材
料が脆性の小さい材料に変化した場合、ミルが十
分に作動していないことに気付いてミルの調整を
変更するまでの間脆性の小さい材料の十分な粉砕
が行なわれないことになる。 However, it often occurs that materials are processed by such mills that are subject to changes in properties such as particle size and brittleness during one operating cycle of the mill. Since it is not possible to predict the point at which the material to be ground will reach virtually new properties in the mill, the mill may continue to operate under extremely unfavorable conditions. In particular, when the properties of a less brittle material change to become a more brittle material, there is a risk that the roller may become stuck in the material and become unable to come out. This may cause vibrations or even an abrupt stop of the mill's operation. Therefore, the mill cannot resume operation unless the rollers are removed and the roller positions are readjusted. Conversely, if a more brittle material changes to a less brittle material, the less brittle material will not be sufficiently ground until the mill realizes that it is not working well and changes the mill settings. It turns out.
本発明の目的は、前記の如き欠点を除去し、粉
砕すべき材料の特性がミル内での処理中に変化す
るときに該特性に自動的に適応することができ従
つて特性が経時的に変化する材料を処理する場合
にも事故の発生及び運転の停止が完全に阻止され
るバウルミルを提供することである。 The object of the invention is to eliminate the drawbacks mentioned above and to be able to automatically adapt to the properties of the material to be ground as they change during processing in the mill, so that the properties change over time. To provide a bowl mill that can completely prevent accidents and stoppage of operation even when processing changing materials.
本発明のミルの特徴は、ミルによつて吸収され
た動力の検出手段とミルに導入される材料のフイ
ード量の検出手段と前記の2つの検出手段のデー
タに応答しミルのフイード量の関数たる材料層の
高さの変化を所定法則に従つて維持する手段とを
含むことである。 The mill of the present invention is characterized by a means for detecting the power absorbed by the mill, a means for detecting the feed amount of material introduced into the mill, and a function of the feed amount of the mill in response to the data of the two aforementioned detecting means. and means for maintaining the height variation of the material layer according to a predetermined law.
材料層の高さの調整に関する所定法則は好まし
くは最大フイード量の30%から100%の範囲で直
線形である。 The predetermined law for adjusting the height of the material layer is preferably linear in the range from 30% to 100% of the maximum feed volume.
本発明による回転式バウルと回転ローラとを備
えた砕炭ミルの1つの具体例及び被処理フイード
量の関数たる石炭層の高さの調整法則の1つの具
体例を夫々示す添付図面に基いて本発明の具体例
を非限定的に以下に説明する。 Based on the attached drawings, which respectively show an embodiment of a coal crushing mill with a rotating bowl and rotating rollers according to the invention and an embodiment of the regulation law of the height of the coal seam as a function of the amount of feed to be processed. Specific examples of the present invention will be described below in a non-limiting manner.
第1図に於いて、回転軸2と有する回転式バウ
ルミル1は、1つだけ図示された符号4の如きテ
ーパ状ローラの誘導路を形成する傾斜縁部3を有
する。ローラ4はピボツト軸6に関して回動する
心軸5によつて担持されている。心軸5の末端7
はピストン10を有する油圧シリンダ9のラム8
に枢着されている。 In FIG. 1, a rotary bowl mill 1 having a rotating shaft 2 has an inclined edge 3 forming a guide path for tapered rollers, only one of which is shown, reference numeral 4. The roller 4 is carried by an axle 5 which rotates about a pivot axis 6. End 7 of shaft 5
is the ram 8 of the hydraulic cylinder 9 with the piston 10
It is pivoted to.
ホツパ11に収納された粉砕すべき石炭はエン
ドレスコンベアベルト12に供給される。ベルト
12の駆動ローラ13はモータ14により駆動さ
れる。スクレーパ15によつてベルト上の石炭が
一定の厚みに揃えられる。ベルト上の石炭はミル
の軸上方に開口する鉛直シユート16に落下す
る。石炭は次に回転式バウルの周縁に投出され、
ローラと誘導路との間を通過して粉砕される。 The coal to be crushed stored in the hopper 11 is supplied to an endless conveyor belt 12. The drive roller 13 of the belt 12 is driven by a motor 14. The scraper 15 aligns the coal on the belt to a constant thickness. The coal on the belt falls into a vertical chute 16 that opens above the axis of the mill. The coal is then dumped onto the periphery of a rotating bowl;
It passes between the roller and the guideway and is crushed.
油圧シリンダ9の圧力は制御デバイス17によ
り制御される。デバイス17は特に、作動流体タ
ンクとポンプと調圧器とを含むが、これらはいず
れも公知のデバイスであるから図示しない。制御
デバイス17は導管18によつて油圧シリンダ9
に接続されておりまた制御調整アセンブリ19に
接続されている。 The pressure in the hydraulic cylinder 9 is controlled by a control device 17. Device 17 includes, among other things, a working fluid tank, a pump, and a pressure regulator, all of which are known devices and are therefore not shown. The control device 17 is connected to the hydraulic cylinder 9 by a conduit 18.
and to the control and regulation assembly 19.
制御調整アセンブリ19は、ローラ13の回転
速度によつて決定される石炭のフイード量を測定
するセンサ20とローラ4の心軸5の近傍に配置
されており該ローラと誘導路との間の石炭層の高
さを測定するセンサ21とによつて夫々示される
石炭のフイード量及び石炭層の高さを示す信号を
受信する。アセンブリ19は更に、ミルの軸駆動
モータ23に接続されておりミルによつて吸収さ
れた動力を測定するセンサ22にも接続されてい
る。最後に、ラム8に作用する液体圧力を測定す
るセンサ24にも接続されている。 A control and regulation assembly 19 is arranged in the vicinity of the axis 5 of the roller 4 and a sensor 20 for measuring the amount of coal feed determined by the rotational speed of the roller 13 and the coal feed rate between the roller and the guideway. A signal indicating the coal feed amount and the height of the coal seam, respectively indicated by a sensor 21 measuring the seam height, is received. Assembly 19 is further connected to a sensor 22 which is connected to the mill's shaft drive motor 23 and which measures the power absorbed by the mill. Finally, it is also connected to a sensor 24 which measures the liquid pressure acting on the ram 8.
例えばマイクロプロセツサから成る制御調整ア
センブリ19は、制御デバイス17を介してラム
8に作用させる圧力をセンサ20によつて示され
た石炭フイード量に従つて調整しており、該調整
は、第2図の石炭フイード量D(公称フイード量
に対する%)と石炭層の高さH(mm)との間に直
線関係に対応する石炭層の高さがセンサ21によ
つて測定されるように行なわれる。前記直線関係
は公称フイード量の30から100%の範囲のフイー
ド量に関して有効であり、石炭層の高さは例えば
15から25mmの範囲である。 A control and regulation assembly 19, for example a microprocessor, regulates the pressure applied to the ram 8 via the control device 17 in accordance with the coal feed quantity indicated by the sensor 20, which regulation The height of the coal seam corresponding to the linear relationship between the coal feed amount D (% of the nominal feed amount) and the height H (mm) of the coal seam shown in the figure is measured by the sensor 21. . Said linear relationship is valid for feed quantities ranging from 30 to 100% of the nominal feed quantity, and the height of the coal seam is e.g.
It ranges from 15 to 25mm.
制御調整アセンブリ19は更に、センサ22が
示すミルにより吸収された動力に応答し、また、
センサ24が示すミル内での粉砕すべき石炭に作
用するローラの圧力に応答する。該アセンブリ
は、石炭層の高さと石炭フイード量とミルによる
吸収動力とローラの作用圧力との各々の変化の結
果としてローラと回転バウルとの間で粉砕中の石
炭の厚みと石炭フイード量との間に第2図同様の
直線関係が維持されるように各パラメータを釣合
わせる。また、石炭フイード量及びミルによる吸
収動力のうちいずれか一方が増加した場合に石炭
層の厚みが増加するようにローラと回転バウルと
の距離を増加させる。更に、センサ22と24と
はデイスプレイ式又はグラフイツク式の記録装置
に接続されてもよく、場合によつては、図示しな
い緊急停止手段に接続されてもよい。 Control and regulation assembly 19 is further responsive to the power absorbed by the mill as indicated by sensor 22;
Sensor 24 is responsive to the pressure of the rollers acting on the coal to be crushed within the mill. The assembly adjusts the thickness of the coal being crushed and the amount of coal feed between the rollers and the rotating bowl as a result of the respective changes in the height of the coal seam, the amount of coal feed, the power absorbed by the mill and the working pressure of the rollers. Each parameter is balanced so that a linear relationship similar to that shown in FIG. 2 is maintained between them. Further, the distance between the rollers and the rotating bowl is increased so that the thickness of the coal seam increases when either the amount of coal feed or the power absorbed by the mill increases. Furthermore, the sensors 22 and 24 may be connected to a display or graphic recording device and, if necessary, to an emergency stop means (not shown).
第1図に基いて説明したミルは本発明の好まし
い具体例を示すものであるが、本発明の全体範囲
を逸脱すること無く種々の変更が可能でありいく
つかの手段が技術的に等しい機能を果す別の手段
に代替され得ることが理解されよう。特に、粉砕
ロールに代えて転動ローラ、ボール等の使用が可
能である。ミルに対する石炭の供給がエンドレス
コンベアベルト以外の手段で行なわれてもよい。
また、ミルのバウルが固定されており粉砕手段が
可動であるように構成されることも可能である。 Although the mill described with reference to FIG. 1 represents a preferred embodiment of the invention, various modifications may be made without departing from the overall scope of the invention, and several means may have technically equivalent functionality. It will be understood that other means of accomplishing this may be substituted. In particular, it is possible to use rolling rollers, balls, etc. in place of the grinding roll. Coal feeding to the mill may be effected by means other than endless conveyor belts.
It is also possible to configure the mill so that the bowl is fixed and the grinding means are movable.
本発明装置は、特に石炭の粉砕に使用される
が、別の材料例えば鉱石、燐酸塩等の粉砕にも適
している。 The device according to the invention is used in particular for the grinding of coal, but is also suitable for grinding other materials such as ores, phosphates, etc.
第1図はミル及び粉砕中の石炭層の高さに応じ
たミル制御デバイスの説明図、第2図は石炭フイ
ード量とミル内の石炭層の高さとの間の直線状関
係を示すグラフである。
1……バウルミル、4……ローラ、5……心
軸、8……ラム、9……油圧シリンダ、10……
ピストン、11……ホツパ、12……ベルト、1
3……駆動ローラ、14……モータ、15……ス
クレーパ、16……シユート、17……制御デバ
イス、19……制御調整アセンブリ、20,2
1,22,24……センサ、23……軸駆動モー
タ。
Figure 1 is an illustration of the mill and the mill control device according to the height of the coal seam during crushing, and Figure 2 is a graph showing the linear relationship between the coal feed amount and the height of the coal seam in the mill. be. 1... Bowl mill, 4... Roller, 5... Mandrel, 8... Ram, 9... Hydraulic cylinder, 10...
Piston, 11...Hopper, 12...Belt, 1
3... Drive roller, 14... Motor, 15... Scraper, 16... Shoot, 17... Control device, 19... Control adjustment assembly, 20,2
1, 22, 24...Sensor, 23...Shaft drive motor.
Claims (1)
に供給する供給手段と、前記バウルの上方に配設
されており、前記供給された前記材料を前記バウ
ルの表面に向かつて押圧する押圧手段と、前記材
料を粉砕すべく前記バウルを回動させる回動手段
と、該回動手段の動力を検出する第1の検出手段
と、前記供給手段に取付けられており、前記材料
の供給量を検出する第2の検出手段と、前記押圧
手段の近傍に配置されており、前記押圧手段が前
記材料を押圧する部位における前記押圧手段の押
圧面と前記バウルの前記表面との距離を検出する
第3の検出手段と、前記第1、第2及び第3の検
出手段と前記押圧手段とに連結されており、前記
材料の前記供給量及び前記回動手段の前記動力の
うち、少くとも一方が増加した場合に前記距離が
増加するように前記押圧手段の押圧力を制御する
制御手段とを有する鉛直軸型バウルミル。 2 前記供給手段の前記材料の供給量が、前記供
給手段の最大供給量の30%から100%の間である
場合には、前記距離が前記供給手段の前記材料の
供給量に正比例して増加する特許請求の範囲第1
項に記載のバウルミル。[Scope of Claims] 1. A bowl, a supply means for supplying the material to be crushed into the bowl, and a supply means disposed above the bowl, for directing the supplied material toward the surface of the bowl. A pressing means for pressing the material, a rotating means for rotating the bowl to crush the material, a first detection means for detecting the power of the rotating means, and a first detecting means for detecting the power of the rotating means; a second detection means for detecting the amount of material supplied; and a second detection means disposed near the pressing means, the second detection means is arranged in the vicinity of the pressing means, and a contact between the pressing surface of the pressing means and the surface of the bowl at a portion where the pressing means presses the material. A third detection means for detecting a distance is connected to the first, second and third detection means and the pressing means, and the amount of the supply of the material and the power of the rotation means are and a control means for controlling the pressing force of the pressing means so that the distance increases when at least one of the pressing forces increases. 2. if the supply rate of said material of said supply means is between 30% and 100% of the maximum supply rate of said supply means, said distance increases in direct proportion to the supply rate of said material of said supply means; Claim 1
Baur mill as described in section.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8210312 | 1982-06-14 | ||
FR8210312A FR2528325A1 (en) | 1982-06-14 | 1982-06-14 | ROTARY TANK MILL |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS594451A JPS594451A (en) | 1984-01-11 |
JPH0137972B2 true JPH0137972B2 (en) | 1989-08-10 |
Family
ID=9274962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58105619A Granted JPS594451A (en) | 1982-06-14 | 1983-06-13 | Vertical shaft type ball mill |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0096852B1 (en) |
JP (1) | JPS594451A (en) |
AT (1) | ATE17447T1 (en) |
CA (1) | CA1190908A (en) |
DE (1) | DE3361842D1 (en) |
FR (1) | FR2528325A1 (en) |
ZA (1) | ZA834312B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1161154B (en) * | 1983-04-21 | 1987-03-11 | Carle & Montanari Spa | DEVICE FOR THE ADJUSTMENT AND SURVEILLANCE OF THE THICKNESS OF THE CHOCOLATE FILM IN CHOCOLATE REFINING MACHINES |
JPS60125260A (en) * | 1983-12-13 | 1985-07-04 | 宇部興産株式会社 | Control of powdering degree of crushed product in vertical roller mill |
JPS63162049A (en) * | 1986-12-26 | 1988-07-05 | 三菱鉱業セメント株式会社 | Method of operating vertical type mill |
JPS6432737U (en) * | 1987-08-25 | 1989-03-01 | ||
EP0647489B1 (en) * | 1993-09-24 | 2000-03-08 | Sintokogio Ltd. | Device for the removal of material adhering to the surfaces of foundry sand grains |
ES2261038B1 (en) * | 2004-10-15 | 2007-11-16 | Horst Lutzow | INTEGRAL CRUSHING MACHINE. |
JP4789019B2 (en) * | 2007-12-07 | 2011-10-05 | 新東工業株式会社 | Foundry sand recycling equipment |
CN103912528B (en) * | 2014-03-31 | 2016-08-31 | 金东纸业(江苏)股份有限公司 | Calcium carbonate dry grinding hydraulic system and control method thereof |
CN109174323A (en) * | 2018-08-09 | 2019-01-11 | 芜湖市昌瑞金属粉末有限公司 | A kind of slug grinding device |
CN114602609B (en) * | 2022-04-02 | 2023-03-21 | 天津水泥工业设计研究院有限公司 | Design method of striker plate for vertical grinding roller |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2424065A1 (en) * | 1978-04-24 | 1979-11-23 | Stein Industrie | Crusher with rotary vessel - has control system to vary pressure of rollers according to material being crushed |
DE3061720D1 (en) * | 1979-03-19 | 1983-03-03 | Smidth & Co As F L | Roller mill and method of operation |
FR2464750A2 (en) * | 1979-09-12 | 1981-03-20 | Stein Industrie | Rotating bowl crusher with suspended crushing roller - uses speed and input suction transducers to automatically empty bowl |
US4372496A (en) * | 1980-10-01 | 1983-02-08 | Combustion Engineering, Inc. | Electronic controller of hydraulic pressure for journal loading of bowl mill |
-
1982
- 1982-06-14 FR FR8210312A patent/FR2528325A1/en active Granted
-
1983
- 1983-06-09 AT AT83105662T patent/ATE17447T1/en not_active IP Right Cessation
- 1983-06-09 DE DE8383105662T patent/DE3361842D1/en not_active Expired
- 1983-06-09 EP EP83105662A patent/EP0096852B1/en not_active Expired
- 1983-06-13 CA CA000430282A patent/CA1190908A/en not_active Expired
- 1983-06-13 ZA ZA834312A patent/ZA834312B/en unknown
- 1983-06-13 JP JP58105619A patent/JPS594451A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
CA1190908A (en) | 1985-07-23 |
DE3361842D1 (en) | 1986-02-27 |
EP0096852A1 (en) | 1983-12-28 |
ATE17447T1 (en) | 1986-02-15 |
EP0096852B1 (en) | 1986-01-15 |
ZA834312B (en) | 1984-03-28 |
FR2528325A1 (en) | 1983-12-16 |
FR2528325B1 (en) | 1984-11-30 |
JPS594451A (en) | 1984-01-11 |
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