JPH0511499B2 - - Google Patents
Info
- Publication number
- JPH0511499B2 JPH0511499B2 JP62060864A JP6086487A JPH0511499B2 JP H0511499 B2 JPH0511499 B2 JP H0511499B2 JP 62060864 A JP62060864 A JP 62060864A JP 6086487 A JP6086487 A JP 6086487A JP H0511499 B2 JPH0511499 B2 JP H0511499B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- bull ring
- ring
- bull
- present
- 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
Links
- 244000309464 bull Species 0.000 claims description 25
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 241000239290 Araneae Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 101100326341 Drosophila melanogaster brun gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Crushing And Grinding (AREA)
Description
【発明の詳細な説明】
この発明は、竪形非接触式遠心ローラミルのブ
ルリングに関し、ローラとブルリングの寿命を延
長すると共に長時間初期の粉砕能力を維持させる
ことができるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bull ring for a vertical non-contact type centrifugal roller mill, and is capable of extending the life of the rollers and the bull ring and maintaining the initial crushing capacity for a long time.
（従来技術）
粉砕微粉に金属成分が混入するのを避けるため
にローラ周面及びブルリングをセラミツク被覆す
ると共にローラをブルリングに対して非接触で運
転する装置（特願昭61−217012）が提供されてい
る。(Prior art) In order to avoid metal components from being mixed into the pulverized fine powder, there is a device (Japanese Patent Application No. 61-217012) in which the circumferential surface of the roller and the bull ring are coated with ceramic and the roller is operated without contacting the bull ring. provided.
この装置においてローラとブルリングとの離間
距離は、例えば粒径0.8〓の硅砂を粉砕する場合
約0.5〓に調節されて運転されるが、数十時間経
過すると、第２図のようにローラ外周部の中央部
２０が消耗し、この結果ローラ両側縁に環状つば
部２１，２２が形成されると共にブルリング内周
面中央部２３も凹面２４に変形して粉砕能力が次
第に低下してくる。 In this device, the distance between the rollers and the bull ring is adjusted to about 0.5〓 when pulverizing silica sand with a grain size of 0.8〓, for example. The center portion 20 of the bull ring is worn out, and as a result, annular collar portions 21 and 22 are formed on both sides of the roller, and the center portion 23 of the inner peripheral surface of the bull ring is also deformed into a concave surface 24, gradually reducing the crushing ability.
この種のローラの自転速度はスパイダー回転数
の約３倍の500〜1500rpmであつてブルングの変
形量に比して当然ローラの変形量の方が大きくな
る。 The rotation speed of this type of roller is 500 to 1500 rpm, which is about three times the spider rotation speed, and the amount of roller deformation is naturally larger than the amount of deformation of the Brun.
この変形状態は、ローラの素材及び被粉砕物と
は関係がなく鉄製ロールにおいても共通である。 This deformed state has nothing to do with the material of the roller or the object to be crushed, and is common to iron rolls as well.
そこで従来は、摩耗が進行する都度、ローラの
両側の環状つぼ部２１，２２を研磨して使用して
いるが、この間装置を停止すると共に再度組立調
整作業をしなければならず装置の運転効率は低い
ものであつた。 Conventionally, the annular pots 21 and 22 on both sides of the roller are ground and used each time the wear progresses, but during this time the device must be stopped and the assembly and adjustment work must be done again, reducing the efficiency of the device's operation. was low.
また、接触式ローラミルにおいてローラ及びブ
ルリングの中間部の偏摩耗を改善するためブルリ
ング内周面とローラ面を曲率の異なる球面として
形成されたローラミルが提案（実開昭61−8443）
されているが、この装置は被粉砕物が比較的柔ら
かい物質の場合には当初は効果があるが、面圧分
布を長時間に亘つて一定に維持することが困難で
ある上、一旦変形した場合は従来例と同様の状態
になつてしまい根本的な解決にはならないもので
ある。 In addition, in order to improve the uneven wear of the middle part of the roller and bull ring in a contact type roller mill, a roller mill was proposed in which the inner peripheral surface of the bull ring and the roller surface were formed as spherical surfaces with different curvatures (Utility Model Application No. 61-8443).
Although this device is initially effective when the material to be crushed is relatively soft, it is difficult to maintain a constant surface pressure distribution over a long period of time, and once the material is deformed, In this case, the situation will be the same as in the conventional case, and there will be no fundamental solution.
（発明の目的）
本発明は上記の不可避的な偏摩耗をなくして、
ローラの連続運転時間を延長し、装置の稼働効率
を高めることを目的とするものである。(Object of the invention) The present invention eliminates the above-mentioned unavoidable uneven wear,
The purpose is to extend the continuous operation time of the rollers and increase the operating efficiency of the device.
（解決手段）
本発明者はローラとブルリングの形状について
種々の実験を行つた結果ブルリングの内周形状を
第３図の如く構成することによつて上記目的を達
成できることを確認した。(Solution Means) As a result of conducting various experiments regarding the shapes of the roller and the bull ring, the present inventor confirmed that the above object can be achieved by configuring the inner peripheral shape of the bull ring as shown in FIG.
即ち、本発明装置はブルリングの厚さをローラ
高さより厚く構成して中間部をローラ円筒面と対
面させ粉砕有効面積を大きくすると共に該ブルリ
ング内周面の上下両側縁に環状のフランジを突設
させることによつて粉砕能力を向上させて更にロ
ーラが損耗した場合でも簡単な間隙調整によつて
初期性能を復活できるようにしたものである。 That is, in the apparatus of the present invention, the thickness of the bull ring is made thicker than the height of the roller so that the middle part faces the cylindrical surface of the roller to increase the effective crushing area. The protruding arrangement improves the crushing ability, and even if the rollers become worn out, the initial performance can be restored by simple gap adjustment.
（実施例）
本発明ローラミルのブルリング１は、鋼製のベ
ースリング２の内面に弧状のセラミツク板を連接
したセラミツクリング３が添着されて構成されて
いる。(Embodiment) A bull ring 1 of a roller mill according to the present invention is constructed by attaching a ceramic ring 3 in which arc-shaped ceramic plates are connected to the inner surface of a base ring 2 made of steel.
耐してセラミツクリングは、ローラ１５の高さ
より厚く構成すると共に中間部６をローラ外側面
１５ａに対面させ上下の両縁４，５を中間部６よ
り内方に突出させて環状のフランジ７，８とす
る。 The ceramic ring is constructed to be thicker than the height of the roller 15, and has an annular flange 7, with the intermediate portion 6 facing the roller outer surface 15a and the upper and lower edges 4, 5 protruding inwardly from the intermediate portion 6. 8.
中間部６とフランジ端縁の段差は、直径300〓
のブルリングの場合約５〓である。 The difference in height between the middle part 6 and the edge of the flange is 300 mm in diameter.
In the case of a bull ring, it is about 5〓.
１０は回転軸、１１はスパイダ、１２はジヤー
ナル、１３は弾圧装置、１４は最小間隙調節装置
であつて、ローラ１５がセラミツクリング３に接
触しないように調節されている。 10 is a rotating shaft, 11 is a spider, 12 is a journal, 13 is a pressure device, and 14 is a minimum gap adjustment device, which is adjusted so that the roller 15 does not come into contact with the ceramic ring 3.
１６はローラ軸、１７は芯金、１８はロール外
側面のセラミツク製の胴部である。 16 is a roller shaft, 17 is a core metal, and 18 is a ceramic body on the outer surface of the roll.
上記本発明装置において被粉砕物原料はブルリ
ングの下方から下方フランジ８の屈曲部を通つて
ローラ１５とブルリング１の中間部６の間隙Ｇに
供給されて主として中間部において粉砕され上方
フランジ７によつてミル胴の中心に向けて吹き上
げられる。 In the apparatus of the present invention, the raw material to be crushed is supplied from below the bull ring through the bent part of the lower flange 8 to the gap G between the roller 15 and the middle part 6 of the bull ring 1, and is mainly crushed in the middle part, and is crushed at the upper flange 7. The air is blown up towards the center of the mill barrel.
なお、粉砕物は下方フランジ上に滞留すること
はない。 Note that the crushed material does not remain on the lower flange.
本発明ブルリングを装置したミルは粉砕能力が
30％以上向上することが確認された。 The mill equipped with the bull ring of the present invention has a high crushing capacity.
It was confirmed that the improvement was over 30%.
この理由は必ずしも明確ではないが、ブルリン
グの上下のフランジ７，８によつて被粉砕物のブ
ルリング中間部６における滞留時間が長くなるこ
とによるものと推測される。 Although the reason for this is not necessarily clear, it is presumed that the residence time of the material to be crushed in the middle portion 6 of the bull ring becomes longer due to the upper and lower flanges 7 and 8 of the bull ring.
また本発明が適用された装置のローラ１５は、
長時間運転によつても第２図のようには消耗変形
せず円筒体が全体に摩耗して直径が小さくなるだ
けであり、ローラ外周面は初期の形態を保持して
いるのである。 Further, the roller 15 of the device to which the present invention is applied is
Even after long-term operation, the cylindrical body does not undergo wear and deformation as shown in FIG. 2, but the cylindrical body wears out as a whole and its diameter becomes smaller, and the outer circumferential surface of the roller maintains its initial shape.
従つてローラ１５が摩耗しても間隙Ｇが大きく
なるだけであるから間隙調節装置１４を所定の間
隔に調節することによつて簡単に初期状態が再現
され効率のよい粉砕が維持されるのである。 Therefore, even if the rollers 15 wear out, the gap G only increases, so by adjusting the gap adjustment device 14 to a predetermined interval, the initial state can be easily reproduced and efficient pulverization can be maintained. .
本発明においてはローラが摩耗してもローラ巾
（高さ）の全長に亙つて粉砕が行われるから長時
間使用しても粉砕効率の著しい低下が無い他、長
時間ローラを研磨しないで済むから装置の稼働効
率は格段に向上する。 In the present invention, even if the rollers wear out, pulverization is performed over the entire length of the roller width (height), so there is no significant drop in pulverization efficiency even when used for a long time, and there is no need to polish the rollers for a long time. The operating efficiency of the equipment is greatly improved.
第１図は本発明ブルリングを装着した竪形ロー
ラミルの一部断面図、第２図は従来のローラ及び
ブルリングの消耗態称を示す説明図、第３図は本
発明の効果を示す説明図である。
Fig. 1 is a partial cross-sectional view of a vertical roller mill equipped with the bull ring of the present invention, Fig. 2 is an explanatory diagram showing how conventional rollers and bull rings are worn out, and Fig. 3 is an explanation showing the effects of the present invention. It is a diagram.
Claims (1)
運転され、ローラ外側面が円筒面である竪形遠心
ローラミルにおいて、ブルリングの厚さをローラ
高さより厚く構成して中間部をローラ円筒面と対
面させると共に該ブルリング内周面の上下両側縁
に環状のフランジを突設させたことを特徴とする
竪形非接触式遠心ローラミルのブルリング。1. In a vertical centrifugal roller mill in which the crushing roller is operated without contacting the bull ring and the outer surface of the roller is a cylindrical surface, the thickness of the bull ring is configured to be thicker than the height of the roller so that the middle part faces the cylindrical surface of the roller. A bull ring for a vertical non-contact centrifugal roller mill, characterized in that annular flanges are protruded from both upper and lower edges of the inner peripheral surface of the bull ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6086487A JPS63224745A (en) | 1987-03-16 | 1987-03-16 | Bull ring for vertical type centrifugal roller mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6086487A JPS63224745A (en) | 1987-03-16 | 1987-03-16 | Bull ring for vertical type centrifugal roller mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63224745A JPS63224745A (en) | 1988-09-19 |
| JPH0511499B2 true JPH0511499B2 (en) | 1993-02-15 |
Family
ID=13154681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6086487A Granted JPS63224745A (en) | 1987-03-16 | 1987-03-16 | Bull ring for vertical type centrifugal roller mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63224745A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS618443B2 (en) * | 1977-02-01 | 1986-03-14 | Fanuc Ltd |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0611108Y2 (en) * | 1984-06-19 | 1994-03-23 | 三菱マテリアル株式会社 | Ring roll mill |
-
1987
- 1987-03-16 JP JP6086487A patent/JPS63224745A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS618443B2 (en) * | 1977-02-01 | 1986-03-14 | Fanuc Ltd |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63224745A (en) | 1988-09-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |