JPH044026B2 - - Google Patents
Info
- Publication number
- JPH044026B2 JPH044026B2 JP10332087A JP10332087A JPH044026B2 JP H044026 B2 JPH044026 B2 JP H044026B2 JP 10332087 A JP10332087 A JP 10332087A JP 10332087 A JP10332087 A JP 10332087A JP H044026 B2 JPH044026 B2 JP H044026B2
- Authority
- JP
- Japan
- Prior art keywords
- rolls
- roll
- crushed
- crushing
- crushing chamber
- 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 description 31
- 230000000452 restraining effect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000007596 consolidation process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007907 direct compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 235000011868 grain product Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Landscapes
- Crushing And Grinding (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は岩石、鉱石等を破砕するロールクラツ
シヤに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a roll crusher for crushing rocks, ores, etc.
従来の技術
ロールクラツシヤにおいて、第５図及び第６図
に示すように、互いに対向し且つ互いに逆方向に
回転する一対のロール２，３を有し、これら一対
のロールの間に形成される空間である破砕室６内
に岩石、鉱石等の被破砕物を供給口５を介して供
給し、その供給された被破砕物を上記一対のロー
ル２，３で巻き込みながら圧縮破砕する形式のも
のがある。2. Description of the Related Art As shown in FIGS. 5 and 6, a roll crusher has a pair of rolls 2 and 3 that face each other and rotate in opposite directions. There is a type in which materials to be crushed, such as rocks and ores, are supplied into a crushing chamber 6 through a supply port 5, and the supplied materials are compressed and crushed while being rolled up by the pair of rolls 2 and 3. .
この種のロールクラツシヤでは、第７ａ図及び
第７ｂ図に示すように破砕室（鎖線で示す領域）
６の長手方向側面６ａ，６ｂが一対のロール２，
３の外周表面によつて区画形成され、一方その端
面６ｃ，６ｄが上記一対のロール２，３の個々の
両端面２ａ，２ｂ及び３ａ，３ｂの間に形成され
る開口と一致する。但し、図示した破砕室６は説
明の便宜のための図であつて、常に図示の領域と
なるとは限らず、破砕条件に応じて適宜の空間領
域に変動する。 In this type of roll crusher, the crushing chamber (area indicated by chain lines) is
The longitudinal side surfaces 6a and 6b of 6 are a pair of rolls 2,
3, and its end surfaces 6c, 6d coincide with the openings formed between the respective end surfaces 2a, 2b and 3a, 3b of the pair of rolls 2, 3. However, the illustrated crushing chamber 6 is a diagram for convenience of explanation, and does not always correspond to the illustrated area, but changes to an appropriate spatial area depending on the crushing conditions.
ところで従来のロールクラツシヤにおいて、破
砕室６の端面開口６ｃ，６ｄから被破砕物が溢れ
出るのを防止するために、チークプレート（頬
板）と呼ばれる側板ライナを備えたものがある。
このロールクラツシヤでは、ロール２，３による
破砕作業中、破砕室端面開口６ｃ，６ｄの下端部
（この部分では被破砕物に加わる圧力が高い）を
介して被破砕物が破砕室６の外部へ押し出される
のを防止するのに十分な機能を持つておらず、よ
つて両ロール２，３に加わる圧力がロール中央部
では高く、両端部では低くなるという理象が起こ
つていた。 By the way, some conventional roll crushers are equipped with side plate liners called cheek plates in order to prevent objects to be crushed from overflowing from the end openings 6c and 6d of the crushing chamber 6.
In this roll crusher, during the crushing operation by the rolls 2 and 3, the material to be crushed is pushed out of the crushing chamber 6 through the lower end portions of the crushing chamber end face openings 6c and 6d (the pressure applied to the material to be crushed is high in this part). As a result, the pressure applied to both rolls 2 and 3 is high at the center of the rolls and low at both ends.
このような状態のままで破砕作業を繰り返して
行なうと、両ロール２，３は偏摩耗により第１０
図に示すように中央部が小径で両端部が大径であ
る不均一な摩耗形状となるおそれがあつた。この
ような偏摩耗が生ずると、セツトすなわちロール
間隙を軸方向に均一に維持することができなくな
り、砕砂の生産のような比較的小さいセツトで被
破砕物を砕く場合には、ロールの両端部ではロー
ルが接する状態になつても、中央部ではなおセツ
トが大き過ぎるようになる。このロールの偏摩耗
はロールクラツシヤの最大の欠点として古くから
良く知られた現象であり、このような状態になる
と効果的な破砕は実行できなくなり、このため
に、ロール表面を研磨してセツトを軸方向に均一
に戻すという手間のかかる整備作業が必要であつ
た。 If the crushing work is repeated in this state, both rolls 2 and 3 will be worn unevenly and the 10th roll will be damaged.
As shown in the figure, there was a risk of an unevenly worn shape with a small diameter at the center and large diameters at both ends. When such uneven wear occurs, it becomes impossible to maintain a uniform set or roll gap in the axial direction, and when crushing materials in relatively small sets, such as in the production of crushed sand, both ends of the rolls Then, even if the rolls come into contact, the set will still be too large in the center. This uneven wear of the rolls is a phenomenon that has been well known for a long time as the biggest drawback of roll crushers. When this condition occurs, effective crushing becomes impossible, and for this reason, the roll surface is polished and the set is rotated. It required time-consuming maintenance work to return it to the correct direction.
又、ロール間のセツトを比較的大きくしてロー
ルとロールとの間に複数の被破砕物粒子を介在さ
せることにより、それら被破砕物粒子を相互に干
渉（圧縮）させて破砕効果をより一層高めるとい
う、いわゆる干渉破砕効果を利用した破砕方法が
本出願人により既に提案されている（特願昭62−
8140号）。この破砕方法においては、ロール２及
び３の間の間隙（破砕間隙）が被破砕物の80％が
通過する粒度の0.6〜1.8倍と比較的広く設定さ
れ、更に被破砕物の破砕室６内における通過量が
破砕機の理論通過容量（ロール幅×ロール周速×
ロール間隙）の0.5〜0.8倍の範囲になるように被
破砕物の供給量が制限される。この方法によれ
ば、破砕室６内において被破砕物粒子が相互に圧
縮し合い、単にロール２，３からの直接の圧縮に
より破砕を行なつた場合に比べて、細粒産物の破
砕処理能力が飛躍的に向上し、更に破砕産物粒子
の形状を良形（立方形状の角のとれた粒形）にす
ることができる。この破砕方法において、上述の
ようにロールの中央部と両端部との間で偏摩耗を
生じてセツトの差が大きくなると、セツトの小さ
過ぎる部分では理論通過容量が小さくなるため
に、圧密度、すなわち被破砕物の通過量の理論通
過容量に対する割合が大きくなり過ぎて過大な圧
密状態を生じ、セツトの大き過ぎる部分では圧密
度が不足して被破砕物相互間の干渉圧縮力が低く
なつてしまう。その結果、所期の目的である破砕
効果の向上が十分に達成できないというおそれが
あつた。 In addition, by making the set between the rolls relatively large and interposing a plurality of particles of the crushed material between the rolls, the particles of the crushed material are allowed to interfere (compress) with each other, thereby further enhancing the crushing effect. The applicant has already proposed a crushing method that utilizes the so-called interference crushing effect.
No. 8140). In this crushing method, the gap between the rolls 2 and 3 (crushing gap) is set to be relatively wide, 0.6 to 1.8 times the particle size through which 80% of the material to be crushed passes, and the inside of the crushing chamber 6 for the material to be crushed is The passing amount is the theoretical passing capacity of the crusher (roll width x roll circumferential speed x
The amount of material to be crushed is limited to a range of 0.5 to 0.8 times the roll gap). According to this method, the particles of the material to be crushed are mutually compressed in the crushing chamber 6, and compared to the case where crushing is simply performed by direct compression from the rolls 2 and 3, the crushing processing capacity of fine grain products is improved. In addition, the shape of the crushed product particles can be made into a good shape (cubic shape with rounded corners). In this crushing method, as mentioned above, if uneven wear occurs between the center and both ends of the rolls and the difference in set becomes large, the theoretical passing capacity becomes small in the part where the set is too small, resulting in a reduction in the degree of consolidation. In other words, the ratio of the amount of material passing through to be crushed to the theoretical passing capacity becomes too large, resulting in an excessively compacted state, and in areas where the set is too large, the degree of consolidation is insufficient and the interference compressive force between objects to be crushed becomes low. Put it away. As a result, there was a fear that the intended objective of improving the crushing effect could not be sufficiently achieved.
本発明が解決しようとする問題点
本発明は上記の点に鑑み、破砕室内における長
手方向（ロールの軸方向）に関する圧力分布を均
一にして、ロールの偏摩耗を防止することを、解
決すべき問題点とする。Problems to be Solved by the Present Invention In view of the above points, the present invention aims to solve the problem of preventing uneven wear of the rolls by making the pressure distribution uniform in the longitudinal direction (in the axial direction of the rolls) in the crushing chamber. This is a problem.
問題点を解決するための手段及びその作用
上記の問題点を解決するための手段、すなわち
本発明は、互いに対向する一対のロールを有し、
これらのロールの間に形成される空間である破砕
室内に被破砕物を供給し、その供給された被破砕
物を互いに逆方向回転する上記一対のロールによ
つて巻き込みながら破砕するロールクラツシヤで
あつて、いずれか一方のロールの端面に固定され
て該ロールと共に回転し、該ロールの外径よりも
少なくともロール間破砕間隙だけ大きい外径を有
し、上記破砕室の端部開口を塞ぐよう配置される
フランジと、上記破砕室の端部開口のうち上記フ
ランジによつて塞がれる領域以外の領域を塞ぐよ
う配置され、該破砕室の端部開口から被破砕物が
溢れ出るのを防止する固定配置された抑え部材と
を有するロールクラツシヤである。Means for Solving the Problems and Their Effects Means for solving the above problems, that is, the present invention has a pair of rolls facing each other,
A roll crusher that supplies a material to be crushed into a crushing chamber, which is a space formed between these rolls, and crushes the supplied material while being rolled up by the pair of rolls that rotate in opposite directions. , is fixed to the end face of one of the rolls and rotates together with the roll, has an outer diameter larger than the outer diameter of the roll by at least the inter-roll crushing gap, and is arranged so as to close the end opening of the crushing chamber. a flange arranged to cover an area of the end opening of the crushing chamber other than the area covered by the flange, and a fixing that prevents the material to be crushed from overflowing from the end opening of the crushing chamber. It is a roll crusher having a restraining member arranged therein.
実施例
第１図及び第２図は一実施例を示している。こ
れらの図において第７図に示した従来装置と同一
部材は同一符号で示してある。この実施例が従来
のロールクラツシヤと異なるのは、破砕室６の両
端面開口６ｃ，６ｄ（第７ｂ図参照）を塞ぐこと
により被破砕物が破砕室から溢流するのを防止す
る抑え部材としてのチークプレート１１の他に、
該端面開口６ｃ，6dの被破砕物に加わる圧力の
高い下端部を介して、被破砕物が破砕室６の外部
へ押し出されるのを防止するフランジ１２を設け
たことである。このフランジ１２は、一方のロー
ル３の両端面に固定されて該ロール３と共に回転
する。又、フランジ１２の外径は、ロール３の外
径よりも少なくともロール間破砕間隙（すなわち
セツト）だけ大きくなつている。このフランジ１
２はロール３と一体となつて回転するので、ロー
ル２，３の間で高い圧力で圧縮破砕される被破砕
物との間で相対的なズレが少ない。その結果、フ
ランジ１２の摩耗が少なくて済み、長時間運転し
てロール２，３の摩耗が進行しても、両ロール
２，３に加わる圧力を軸方向に均一に維持すると
いうフランジ１２の機能が失なわれず、よつてロ
ール２，３の偏摩耗を長期間に亘つて防止するこ
とができる。Embodiment FIGS. 1 and 2 show an embodiment. In these figures, the same members as those in the conventional device shown in FIG. 7 are designated by the same reference numerals. This embodiment differs from the conventional roll crusher in that it is used as a restraining member that prevents the material to be crushed from overflowing from the crushing chamber by blocking the openings 6c and 6d on both end faces of the crushing chamber 6 (see Figure 7b). In addition to cheek plate 11,
A flange 12 is provided to prevent the object to be crushed from being pushed out of the crushing chamber 6 through the lower end portions of the end face openings 6c and 6d, where the pressure applied to the object is high. This flange 12 is fixed to both end faces of one roll 3 and rotates together with the roll 3. Further, the outer diameter of the flange 12 is larger than the outer diameter of the roll 3 by at least the inter-roll crushing gap (ie, set). This flange 1
2 rotates integrally with the roll 3, so there is little relative displacement between the rolls 2 and 3 and the material to be crushed under high pressure. As a result, the flange 12 has a function of maintaining uniform pressure applied to both rolls 2 and 3 in the axial direction even if wear of the rolls 2 and 3 progresses due to long-term operation. Therefore, uneven wear of the rolls 2 and 3 can be prevented for a long period of time.
尚、被破砕物の供給口５には固定ゲート７及び
スライドゲート８が設けられている。スライドゲ
ート８には、第３図に示すようにロツド９が接続
されていて、このロツド９を矢印AA′の如く移動
させることにより、固定ゲート７とスライドゲー
ト８との間に空間の間隔を調節できる。これによ
り、供給口５から破砕室６へ送られる被破砕物の
量を調節できる。スライドゲート８の先端が彎曲
形状となつていて、供給口５の断面形状が破砕室
６の両端部領域で広く、中央部領域で狭くなつて
いるのは、供給口５の側壁部（すなわち破砕室６
の両端部）に対する被破砕物の供給が摩擦等のた
めに不足するのを防止し、破砕室６の長手方向全
域に被破砕物を均一に供給して偏摩耗を防止する
ためである。 Note that a fixed gate 7 and a slide gate 8 are provided at the supply port 5 for the material to be crushed. A rod 9 is connected to the slide gate 8 as shown in FIG. 3, and by moving the rod 9 in the direction of arrow AA', the space between the fixed gate 7 and the slide gate 8 can be increased. Can be adjusted. Thereby, the amount of material to be crushed sent from the supply port 5 to the crushing chamber 6 can be adjusted. The tip of the slide gate 8 is curved, and the cross-sectional shape of the supply port 5 is wide at both end regions of the crushing chamber 6 and narrow at the center region, which is due to the side wall of the supply port 5 (i.e., the crushing room 6
This is to prevent the supply of the material to be crushed to the both ends of the crushing chamber 6 from being insufficient due to friction, etc., and to uniformly supply the material to be crushed over the entire longitudinal direction of the crushing chamber 6 to prevent uneven wear.
又、供給口５の長手方向の長さＬは、第３図及
び第４図に示すように、ロール３の両フランジ１
２間の長さにほぼ等しく、ロール２の軸方向長さ
Ｌよりわずかに長い長さに設定されている。これ
は、上記のようにスライドゲート８の先端を彎曲
形状にすることと相まつて、ロール２，３の全長
に亘つて被破砕物を均一に供給するためである。
第２図における符号BEは、ロール２，３を支持
するための軸受である。 Further, the length L in the longitudinal direction of the supply port 5 is determined by the length L in the longitudinal direction of both flanges 1 of the roll 3, as shown in FIGS. 3 and 4.
The length is set to be approximately equal to the length between the rolls 2 and slightly longer than the axial length L of the rolls 2. This is because the tip of the slide gate 8 is curved as described above, and the material to be crushed is uniformly supplied over the entire length of the rolls 2 and 3.
Reference numeral BE in FIG. 2 is a bearing for supporting the rolls 2 and 3.
発明の効果
以上のように本発明によれば、被破砕物がロー
ルの圧縮力によつてロールの軸方向に破砕室から
押し出されるのを、摩耗の少ないフランジによつ
て防止するので、ロールにかかる圧力及び破砕室
内における被破砕物粒子相互間に作用する圧縮力
が長手方向（ロール軸方向）の全域に亘つて長期
間均一となり、その結果、長期間に亘つてロール
の偏摩耗を防止することができる。Effects of the Invention As described above, according to the present invention, the material to be crushed is prevented from being pushed out of the crushing chamber in the axial direction of the rolls by the compressive force of the rolls, so the flanges with less wear are prevented. This pressure and the compressive force acting between the particles of the crushed material in the crushing chamber are uniform over a long period of time over the entire lengthwise direction (roll axis direction), and as a result, uneven wear of the rolls is prevented over a long period of time. be able to.
第１図は一実施例の側断面図、第２図は該実施
例の平面断面図、第３図は該実施例の上面図、第
４図は第１図における−線に従つた断面図、
第５図及び第６図は従来のロールクラツシヤの断
面図、第７ａ図及び第７ｂ図は破砕室を示す斜視
図、第８図はロールの摩耗状態を示す図式図であ
る。
２，３……ロール、６……破砕室、２ａ，２
ｂ，３ａ，３ｂ……ロール端面、６ｃ，６ｄ……
破砕室開口、４，１４……抑え部材。
FIG. 1 is a side sectional view of one embodiment, FIG. 2 is a plan sectional view of the embodiment, FIG. 3 is a top view of the embodiment, and FIG. 4 is a sectional view taken along the - line in FIG. 1. ,
5 and 6 are cross-sectional views of a conventional roll crusher, FIGS. 7a and 7b are perspective views showing the crushing chamber, and FIG. 8 is a schematic view showing the state of wear of the rolls. 2, 3...Roll, 6...Crushing chamber, 2a, 2
b, 3a, 3b...roll end surface, 6c, 6d...
Crushing chamber opening, 4, 14... suppressing member.
Claims (1)
のロールの間に形成される空間である破砕室内に
被破砕物を供給し、該被破砕物を上記一対のロー
ルによつて巻き込みながら圧縮破砕するロールク
ラツシヤにおいて、 いずれか一方のロールの端面に固定されて該ロ
ールと共に回転し、該ロールの外径よりも少なく
ともロール間破砕間隙だけ大きい外径を有し、上
記破砕室の端部開口を塞ぐよう配置されるフラン
ジと、 上記破砕室の端部開口のうち上記フランジによ
つて塞がれる領域以外の領域を塞ぐように配置さ
れ、該破砕室の端部開口から被破砕物が溢れ出る
のを防止する固定配置された抑え部材と、 を有することを特徴とするロールクラツシヤ。 ２ 上記被破砕物を供給するための被破砕物供給
口を有し、この被破砕物供給口のロール軸方向の
長さが上記各抑え部材間の内法寸法にほぼ等しい
ことを特徴とする特許請求の範囲第１項に記載の
ロールクラツシヤ。 ３ 上記被破砕物を供給するための供給路の少な
くとも一部が、破砕室の両端部に対応する領域で
広く、そして中央部に対応する領域で狭いことを
特徴とする特許請求の範囲第１項又は第２項に記
載のロールクラツシヤ。 ４ 上記被破砕物を供給するための供給路の少な
くとも一部の開口面積の大きさが調節可能である
ことを特徴とする特許請求の範囲第１項から第３
項のいずれか１つに記載のロールクラツシヤ。[Scope of Claims] 1. It has a pair of rolls facing each other, supplies a material to be crushed into a crushing chamber which is a space formed between these rolls, and supplies the material to be crushed by the pair of rolls. In a roll crusher that compresses and crushes while rolling the roll, it is fixed to the end face of one of the rolls, rotates together with the roll, has an outer diameter larger than the outer diameter of the roll by at least the crushing gap between the rolls, and has an outer diameter larger than the outer diameter of the roll by at least the crushing gap between the rolls. a flange disposed to close an end opening; a flange disposed so as to close an area other than the area covered by the flange of the end opening of the crushing chamber; A roll crusher comprising: a fixedly placed restraining member that prevents objects from overflowing; 2. It has a crushed material supply port for supplying the crushed material, and the length of the crushed material supply port in the roll axis direction is approximately equal to the internal dimension between the respective restraining members. A roll crusher according to claim 1. 3. Claim 1, wherein at least a part of the supply path for supplying the material to be crushed is wide in regions corresponding to both ends of the crushing chamber and narrow in a region corresponding to the center part. The roll crusher according to item 1 or 2. 4. Claims 1 to 3, characterized in that the size of the opening area of at least a portion of the supply path for supplying the material to be crushed is adjustable.
The roll crusher according to any one of the clauses.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62103320A JPS63270556A (en) | 1987-04-28 | 1987-04-28 | Roll crusher |
| PCT/JP1988/000416 WO1988008330A1 (en) | 1987-04-28 | 1988-04-27 | Roll crusher and method of crushing using the same |
| EP88903931A EP0328647B1 (en) | 1987-04-28 | 1988-04-27 | Roll crusher and method of crushing using the same |
| KR1019920700536A KR920010350B1 (en) | 1987-04-28 | 1988-04-27 | Roll crusher |
| EP92114046A EP0514953B1 (en) | 1987-04-28 | 1988-04-27 | Roll crusher and crushing method in use for the roll crusher |
| DE3855619T DE3855619T2 (en) | 1987-04-28 | 1988-04-27 | Roll crusher and crushing process using the same |
| KR1019880701466A KR920003077B1 (en) | 1987-04-28 | 1988-04-27 | Roll crusher and method of crushing using the same |
| DE88903931T DE3885442T2 (en) | 1987-04-28 | 1988-04-27 | ROLL CRUSHERS AND CRUSHING METHOD USING THE SAME. |
| AU16895/88A AU604324B2 (en) | 1987-04-28 | 1988-04-27 | Roll crusher and method of crushing using the same |
| AU62539/90A AU632621B2 (en) | 1987-04-28 | 1990-09-14 | Roll crusher and crushing method in use for the roll crusher |
| US07/590,562 US5088651A (en) | 1987-04-28 | 1990-09-28 | Roll crusher and crushing method in use for the roll crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62103320A JPS63270556A (en) | 1987-04-28 | 1987-04-28 | Roll crusher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63270556A JPS63270556A (en) | 1988-11-08 |
| JPH044026B2 true JPH044026B2 (en) | 1992-01-27 |
Family
ID=14350904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62103320A Granted JPS63270556A (en) | 1987-04-28 | 1987-04-28 | Roll crusher |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63270556A (en) |
-
1987
- 1987-04-28 JP JP62103320A patent/JPS63270556A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63270556A (en) | 1988-11-08 |
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