JPH03270739A - Roller of vertical roller mill - Google Patents
Roller of vertical roller millInfo
- Publication number
- JPH03270739A JPH03270739A JP6905690A JP6905690A JPH03270739A JP H03270739 A JPH03270739 A JP H03270739A JP 6905690 A JP6905690 A JP 6905690A JP 6905690 A JP6905690 A JP 6905690A JP H03270739 A JPH03270739 A JP H03270739A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- tire
- gap
- vertical
- head
- 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
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Crushing And Grinding (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、セメントクリンカや高炉スラグ等の粉砕に
用いる竪型ローラミルに関するもので、更に述べれば、
竪型ローラミルのローラに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a vertical roller mill used for pulverizing cement clinker, blast furnace slag, etc.
This relates to the rollers of a vertical roller mill.
従来の技術
竪型ローラミルでは、機台に支承された粉砕テーブルと
粉砕ローラとの間に噛み込んだセメントクリンカ等の被
粉砕原料を挟圧力によって破砕している。しかし、この
ローラは、稼働時間が長くなるに従い、摩耗して粉砕部
位がテーブル中心側に移るため、粉砕能力が低下してし
まう、そこでこのローラを新しいものと交換しなければ
ならないが、費用の点で新品のローラと取り替えるのは
問題がある。そこでローラ本体にタイヤを嵌着して円錐
台状のローラを形成し、該ローラが摩耗した時にはこの
タイヤのみを交換するようにしている。In conventional vertical roller mills, raw materials to be crushed, such as cement clinker, caught between a crushing table supported on a machine stand and a crushing roller are crushed by squeezing force. However, as the operating time of this roller increases, it wears out and the crushing part moves toward the center of the table, reducing the crushing capacity.Therefore, this roller must be replaced with a new one, which is costly. Therefore, there is a problem in replacing the roller with a new one. Therefore, a tire is fitted onto the roller body to form a truncated conical roller, and when the roller becomes worn out, only this tire is replaced.
発明が解決しようとする課題
従来例の竪型ローラミルでは、長時間稼働していると、
仕事量の大きい部分、即ち、テーブルの外周側及びロー
ラの底部側の摩耗が仕事量の小さい部分、即ち、テーブ
ル内周側及びローラの頭部側に比べ著しく大きくなるの
で、テープル内周側及びローラの頭部側が残存し、仕事
量の大きい部分の仕事量の大きい部分のローラとテーブ
ルの接近を阻害するようになる。Problems to be solved by the invention In conventional vertical roller mills, when operating for a long time,
The wear on the parts with a large amount of work, i.e., the outer circumference of the table and the bottom of the roller, is significantly greater than the parts with a small amount of work, i.e., the inner circumference of the table and the head of the roller. The head side of the roller remains, obstructing the approach of the roller in the portion where the amount of work is large and the table.
そのため、ローラとテーブルは常にテーブル外周側に向
って両者の空隙が狭くなる構造を維持する必要があるに
もかかわらず、テーブルの外周側とローラの底側との空
隙よりもテーブルの内周側とローラの頭部との空隙の方
が狭くなり、粉砕能力が低下してしまう。Therefore, although it is necessary to always maintain a structure in which the gap between the roller and table narrows toward the outer circumference of the table, the inner circumference of the table is smaller than the gap between the outer circumference of the table and the bottom of the roller. The gap between the roller head and the roller head becomes narrower, and the crushing ability decreases.
この発明は、上記事情に鑑み、ローラが摩耗しても、そ
の頭部側がテーブルの内周側に接触しないようにすると
ともに主として粉砕仕事をする部位がテーブルの中心側
へ移ることを極力少なくすることを目的とする。In view of the above circumstances, this invention prevents the head side of the roller from coming into contact with the inner peripheral side of the table even if it wears out, and minimizes the movement of the part that primarily performs the crushing work toward the center of the table. The purpose is to
課題を解決するための手段
この発明は、ローラ本体にタイヤを嵌着して円錐台状の
ローラを形成した竪型ローラミルにおいて、該タイヤの
底部側に許容摩耗部を形成したことを特徴とする竪型ロ
ーラミルのローラにより、前記目的を達成しようとする
ものである。Means for Solving the Problems The present invention is a vertical roller mill in which a tire is fitted onto a roller body to form a truncated conical roller, characterized in that an allowable wear portion is formed on the bottom side of the tire. The purpose is to achieve the above object by using the rollers of a vertical roller mill.
作用
テーブル上に、ローラを傾斜して配設し、タイヤの底部
側をテーブルの外周に当接させ、又その頭部側とテーブ
ルの内周側との間に所定形状の空隙を形成する。このロ
ーラミルを稼働すると仕事量の大きいタイヤの底部側が
摩耗し、許容摩耗部が消耗してしまう。しかし、この時
タイヤの頭部側とテーブルの内周側との間には、大きく
空隙が存在しているので両者が接触することはない。A roller is arranged at an angle on the working table, the bottom side of the tire is brought into contact with the outer periphery of the table, and a gap of a predetermined shape is formed between the head side and the inner periphery of the table. When this roller mill is operated, the bottom side of the tire, which has a large amount of work, wears out, and the allowable wear area is consumed. However, since there is a large gap between the head side of the tire and the inner peripheral side of the table at this time, the two do not come into contact with each other.
実施例
この発明の実施例を添付図面により説明するが、同一図
面符号はその名称も機能も同一である。Embodiments An embodiment of the present invention will be described with reference to the accompanying drawings, in which the same reference numerals have the same names and functions.
竪型ローラミルＭは、第３図に示す様に上面が水平状の
テーブル１と該テーブル上に、傾斜して設けられた円錐
台状のローラ２とからｉ戒されている。As shown in FIG. 3, the vertical roller mill M consists of a table 1 whose upper surface is horizontal and a truncated conical roller 2 which is inclined and provided on the table.
このローラ２は回転軸３付ロ一ラ本体４と、タイヤ５と
からｉｔされている。This roller 2 is made up of a roller body 4 with a rotating shaft 3 and tires 5.
このタイヤ５は第１図に示す様に、その底部５ａ側を頭
部５ｂ側より肉厚にして許容摩耗部６が形成されている
。この許容摩耗部６の厚さはローラが設定量消耗した時
に、ローラの頭部５ｂ側がテーブル１に接触しない程度
に形成する。As shown in FIG. 1, this tire 5 has a bottom 5a side that is thicker than a head 5b side to form a permissible wear portion 6. The allowable wear portion 6 is formed to have a thickness such that the head 5b side of the roller does not come into contact with the table 1 when the roller is worn down by a set amount.
タイヤ５の外周面５Ｃには、被粉砕原料の噛込みを良く
するために、軸方向のリブ７が配設されている。An axial rib 7 is provided on the outer circumferential surface 5C of the tire 5 in order to improve the biting of the raw material to be crushed.
このリブ７は、長リブ７ａと短リブ７ｂとから構成され
、外周方向に間隔をおいて順次配設されている。The ribs 7 are composed of long ribs 7a and short ribs 7b, which are sequentially arranged at intervals in the outer circumferential direction.
この実施例の作動につき説明すると、タイヤ５を嵌着し
たローラ２をテーブルｌ上に傾斜せしめて載置し、タイ
ヤ５の頭部５ｂ側の外周面５ｃとテーブル１の中心ＩＣ
側（内周側とも言う）との間に所定の空隙８を形成する
。この空隙８は、タイヤ５の頭部５ｂ側、即ち、テーブ
ル１の内周ｌｃ側が、タイヤ５の底部５ａ側、即ちテー
ブルｌの外周ｌａ側より大きくなっている。この状態に
おいて竪型ローラミルＭを稼働し、被粉砕原料をテーブ
ル１とローラ２との間に供給すると該原料は挟圧力によ
り粉砕される。この粉砕作業が長く続くと、次第にタイ
ヤ５の底部５ａ側が摩耗を始め、許容摩耗部６が消耗し
てしまう、この時、タイヤの頭部５ｂ側はテーブルの内
周ｌｃ側に接触せず、両者間には空隙があるので、粉砕
が行なわれ、かつ、摩耗が進む部分、即ち、ローラ２の
底部５ａ側とテーブルの外周ｌａ側との接近が阻害され
ることはない。To explain the operation of this embodiment, the roller 2 on which the tire 5 is fitted is placed on the table l in an inclined manner, and the outer peripheral surface 5c of the tire 5 on the head 5b side and the center IC of the table 1 are
A predetermined gap 8 is formed between the side (also referred to as the inner peripheral side). The gap 8 is larger on the head 5b side of the tire 5, that is, on the inner circumference lc side of the table 1, than on the bottom 5a side of the tire 5, that is, on the outer circumference la side of the table l. In this state, when the vertical roller mill M is operated and the raw material to be crushed is fed between the table 1 and the rollers 2, the raw material is crushed by the clamping force. If this grinding operation continues for a long time, the bottom 5a side of the tire 5 will gradually start to wear out, and the allowable wear part 6 will be worn out. At this time, the head 5b side of the tire will not come into contact with the inner circumference lc side of the table, Since there is a gap between them, the approach between the part where pulverization is performed and wear progresses, that is, the bottom 5a side of the roller 2 and the outer circumference la side of the table is not obstructed.
なお、テーブルにおいてもテーブル外周側レイナーに同
じく許容摩耗部が形成されると一層好適である。In addition, it is more preferable that a permissible wear portion is similarly formed on the outer peripheral side reiner of the table.
発明の効果
この発明に係る竪型ローラミルのローラはタイヤの底部
側に許容摩耗部を形成したので、タイヤの底部側が摩耗
して許容摩耗部が消耗してもタイヤの頭部側とテーブル
の内周側とが接触することはない。Effects of the Invention The rollers of the vertical roller mill according to the present invention have a permissible wear part on the bottom side of the tire, so even if the bottom part of the tire wears out and the permissible wear part wears out, the rollers on the head side of the tire and the inside of the table There is no contact with the circumferential side.
従って、粉砕が行なわれ、かつ、摩耗が進むローラの部
分が、テーブルと接近するのを阻害されることはないの
で、効率の良い粉砕作業を行なうことができる。Therefore, the portion of the roller where pulverization is performed and which is subject to further wear is not prevented from approaching the table, so that efficient pulverization work can be performed.
第１図〜第３図はこの発明の実施例を示す図で、第１図
はタイヤの縦断面図、第２図は底面図、第３図は、使用
状態を示す縦断面図である。
１・・・テーブル
２・・・ローラ
５・・・タイヤ
５ａ・・・底部
５ｂ・・・頭部
６・・・許容摩耗部1 to 3 are views showing embodiments of the present invention, in which FIG. 1 is a longitudinal sectional view of the tire, FIG. 2 is a bottom view, and FIG. 3 is a longitudinal sectional view showing the tire in use. 1...Table 2...Roller 5...Tire 5a...Bottom part 5b...Head part 6...Permissible wear part
Claims (3)
を形成した竪型ローラミルにおいて、該タイヤの底部側
に許容摩耗部を形成したことを特徴とする竪型ローラミ
ルのローラ。(1) A vertical roller mill in which a truncated cone-shaped roller is formed by fitting a tire onto a roller body, characterized in that a permissible wear portion is formed on the bottom side of the tire.
ことを特徴とする請求項第１記載の竪型ローラミルのロ
ーラ。(2) The roller of a vertical roller mill according to claim 1, wherein an axial rib is provided on the outer peripheral surface of the tire.
長リブと短リブとからなることを特徴とする請求項第２
記載の竪型ローラミルのローラ。(3) Claim 2, characterized in that the ribs consist of long ribs and short ribs arranged in sequence at intervals in the outer circumferential direction.
The rollers of the vertical roller mill described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6905690A JP2931913B2 (en) | 1990-03-19 | 1990-03-19 | Vertical roller mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6905690A JP2931913B2 (en) | 1990-03-19 | 1990-03-19 | Vertical roller mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03270739A true JPH03270739A (en) | 1991-12-02 |
| JP2931913B2 JP2931913B2 (en) | 1999-08-09 |
Family
ID=13391535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6905690A Expired - Lifetime JP2931913B2 (en) | 1990-03-19 | 1990-03-19 | Vertical roller mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2931913B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518192A (en) * | 1994-03-15 | 1996-05-21 | Kabushiki Kaisha Kobe Seiko Sho | Vertical roller mill |
| US5834870A (en) * | 1994-04-28 | 1998-11-10 | Hitachi, Ltd. | Oil impregnated porous bearing units and motors provided with same |
| JP2017094284A (en) * | 2015-11-25 | 2017-06-01 | 宇部興産機械株式会社 | Vertical mill |
-
1990
- 1990-03-19 JP JP6905690A patent/JP2931913B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518192A (en) * | 1994-03-15 | 1996-05-21 | Kabushiki Kaisha Kobe Seiko Sho | Vertical roller mill |
| US5834870A (en) * | 1994-04-28 | 1998-11-10 | Hitachi, Ltd. | Oil impregnated porous bearing units and motors provided with same |
| JP2017094284A (en) * | 2015-11-25 | 2017-06-01 | 宇部興産機械株式会社 | Vertical mill |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2931913B2 (en) | 1999-08-09 |
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