JPS6015763Y2 - Asphalt plant dryer - Google Patents
Asphalt plant dryerInfo
- Publication number
- JPS6015763Y2 JPS6015763Y2 JP6916781U JP6916781U JPS6015763Y2 JP S6015763 Y2 JPS6015763 Y2 JP S6015763Y2 JP 6916781 U JP6916781 U JP 6916781U JP 6916781 U JP6916781 U JP 6916781U JP S6015763 Y2 JPS6015763 Y2 JP S6015763Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotating
- aggregates
- dryer
- aggregate
- cylinder
- 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
Landscapes
- Road Paving Machines (AREA)
Description
【考案の詳細な説明】 本考案は、アスファルトプラントのドライヤに関する。[Detailed explanation of the idea] The present invention relates to a dryer for an asphalt plant.
従来のアスファルトプラントのドライヤは、回転筒に吹
き込む加熱バーナーの火炎部のまわりでは、加熱バーナ
ーの火炎部に骨材が直接接触して変質しないように、骨
材を回転筒の上層部にかき上げて攪拌せずに、下周部に
おいて攪拌して搬送するようにしていた。Conventional dryers for asphalt plants scrape aggregates up to the upper layer of the rotating cylinder around the flame part of the heating burner that blows into the rotating cylinder to prevent the aggregate from coming into direct contact with the flame part of the heating burner and deteriorating its quality. Instead of stirring at the bottom, the material was stirred and conveyed at the lower periphery.
そのため、骨材が回転筒の下周部に偏在し、回転筒の内
部空間を有効に利用して骨材を加熱しておらず、加熱バ
ーナーの火炎部のまわりの回転筒の表面温度が非常に高
温となって大量の熱が外部に放散しているものであつた
。As a result, the aggregate is unevenly distributed around the lower circumference of the rotating cylinder, and the internal space of the rotating cylinder is not used effectively to heat the aggregate, causing the surface temperature of the rotating cylinder around the flame part of the heating burner to become extremely low. It reached a high temperature and a large amount of heat was dissipated to the outside.
ところで、特開昭55−68906号公報には、L字状
のじゃま板を回転筒に周設して骨材等を旋回搬送する旨
が記載されている。By the way, Japanese Unexamined Patent Publication No. 55-68906 describes that an L-shaped baffle plate is provided around a rotating cylinder to transport aggregates and the like in a rotational manner.
しかし、同公報では、回転筒の下周部でじゃま板に骨材
等を搭載するときに骨材等が下周面にそって素通りしや
すくて非効率的であり、また回転筒の上層部では骨材等
が途中で落下して加熱バーナーに直接接触して変質しや
すく、また円筒状の火炎部を乱して骨材等の加熱乾燥効
率を低くするものであった。However, in the same publication, when loading aggregates etc. on the baffle plate at the lower circumference of the rotary cylinder, the aggregates etc. tend to pass along the lower circumferential surface, which is inefficient. In this method, aggregates and the like fall down on the way and come into direct contact with the heating burner and are likely to deteriorate in quality, and also disturb the cylindrical flame section, reducing the efficiency of heating and drying the aggregates and the like.
本考案は上記のような欠点に鑑みたもので、供給する骨
材等を回転筒の下周部で素通りするのを防止して旋回搬
送装置に搭載しやすく、搭載しやすいにもかかわらず回
転筒の上層部の途中で落下しに<<シて、骨材等を加熱
バーナーの火炎部のまわりの回転筒の全周にわたって火
炎部に骨材等をほとんど落下せずに旋回搬送するうにし
て、回転筒の内部空間を有効に利用できて骨材等を加熱
できるとともに、回転筒の内周部を旋回搬送する骨材等
にって回転筒を過熱するのを防止でき、骨材等の加熱効
率の著しい向上がはかれるアスファルトプラントのドラ
イヤを提供するにある。The present invention was developed in view of the above-mentioned drawbacks.It prevents the aggregates, etc. to be supplied from passing through the lower periphery of the rotating cylinder, making it easy to mount it on a rotating conveyor. The structure is such that the aggregates, etc. are rotated around the entire circumference of the rotating cylinder around the flame section of the heating burner without falling into the flame section, with the aggregates etc. falling in the middle of the upper layer of the cylinder. This makes it possible to effectively utilize the internal space of the rotary tube and heat the aggregates, etc., and prevent the rotary tube from being overheated due to the aggregates, etc. being conveyed by rotating around the inner circumference of the rotary tube. An object of the present invention is to provide a dryer for an asphalt plant in which the heating efficiency of the asphalt plant can be significantly improved.
以下、本考案を実施例にもとづいて説明する。The present invention will be explained below based on examples.
第1図〜第3図は本考案の一実施例のドライヤ1で、所
定の大きさの回転筒2を動装置3によって所定の速度で
回転自在に基台4に枢着し、その−側部に骨材を供給す
る供給シュート5を配設するとともに他側部に骨材加熱
用の加熱バーナー6を排出シュート7とを配設し、供給
シュート5から供される骨材を回転筒2内で攪拌搬送し
ながら、所定通りに加熱して排出シュート7から順次排
出できるようにしている。1 to 3 show a dryer 1 according to an embodiment of the present invention, in which a rotary cylinder 2 of a predetermined size is pivotally attached to a base 4 so as to be rotatable at a predetermined speed by a moving device 3, and the A supply chute 5 for supplying aggregate is disposed on one side, and a heating burner 6 for heating the aggregate and a discharge chute 7 are disposed on the other side, and the aggregate supplied from the supply chute 5 is transferred to the rotary cylinder 2. While being stirred and conveyed within the interior, the materials are heated in a predetermined manner so that they can be sequentially discharged from a discharge chute 7.
回転筒2の加熱バーナー6側の加熱バーナー6で吹き込
む火炎部8のまわりの内周部には、第1図、第2図のよ
うに骨材を内周面にそって旋回搬送する断面がほぼコ字
状の旋回搬送装置9をへこみ部10がそれぞれ内周面に
対向するようにして一定のピッチで内周部にそって周設
している。As shown in Figs. 1 and 2, the inner peripheral part around the flame part 8 blown by the heating burner 6 on the heating burner 6 side of the rotating cylinder 2 has a cross section for rotating and conveying the aggregate along the inner peripheral surface. A substantially U-shaped rotating conveyance device 9 is disposed around the inner circumferential portion at a constant pitch so that the recessed portions 10 respectively face the inner circumferential surface.
旋回搬送装置9は、骨材をかき上げやすくするために回
転筒2の回転方向側の側端部と内周面との間隔を広くし
、他端部と内周面との間隔を狭くして、第3図のように
内周面に適当な間隔で配設した固着台11に取付具12
を介してそれぞれ固着している。In order to make it easier to scrape up the aggregate, the rotating transport device 9 widens the distance between the side end of the rotary cylinder 2 in the direction of rotation and the inner circumferential surface, and narrows the distance between the other end and the inner circumferential surface. Then, as shown in FIG.
They are attached to each other through.
また、回転筒2の内周面には、第2図、第3図のように
旋回搬送装置9のそれぞれのへこみ部10に対向して攪
拌羽根13を周設し、骨材を内周面にそって旋回搬送装
置9で効率よく内周部を旋回搬送できるようにしている
。Furthermore, as shown in FIGS. 2 and 3, stirring blades 13 are provided around the inner circumferential surface of the rotary cylinder 2 so as to face the recessed portions 10 of the rotating conveyance device 9. The inner circumferential portion can be efficiently rotated and conveyed along the rotational conveyance device 9 along the inner circumferential portion.
しかして、骨材を供給シュート5から供給すると、骨材
は、回転筒2の中で攪拌されながら加熱バーナー6の方
へ順次搬送される。When the aggregate is supplied from the supply chute 5, the aggregate is sequentially conveyed toward the heating burner 6 while being stirred in the rotary cylinder 2.
加熱バーナー6側の火炎部8に搬送された骨材は、第2
図のように回転筒2の下周面と攪拌羽根13と旋回搬送
装置9とで形成されるラビリンスのような通路によって
順次旋回搬送装置9のへこみ部10に効率よく塔載し、
回転筒2の上周部に搬送されていく。The aggregate conveyed to the flame section 8 on the side of the heating burner 6 is
As shown in the figure, the column is efficiently loaded onto the concave portion 10 of the rotating conveyance device 9 in order through a labyrinth-like passage formed by the lower peripheral surface of the rotating cylinder 2, the stirring blade 13, and the rotating conveyance device 9.
It is transported to the upper circumference of the rotary cylinder 2.
この際、図のように旋回搬送装置9の回転方向の側端部
を回転筒2の内周面からやや遠く、反対側の他側端部を
回転筒2の内周面に近づけて配設しているため、骨材が
旋回搬送装置のへこみ部に入りやすく、下方に出にくく
できて、骨材の塔載量を多くできるものである。At this time, as shown in the figure, the side end of the rotating conveyance device 9 in the rotational direction is located a little far from the inner circumferential surface of the rotary tube 2, and the other end on the opposite side is arranged so as to be close to the inner circumferential surface of the rotary tube 2. As a result, the aggregate easily enters the recessed portion of the rotating conveyance device, making it difficult for the aggregate to come out downward, and the amount of aggregate to be loaded can be increased.
そして、火炎部8の端部上方の回転筒2の上周部を通過
するところで、旋回搬送装置9のへこみ部10に塔載し
ていた骨材が図のように下降旋回とともに順次下部に向
って落下していき、へこみ部10に残っていた骨材も回
転筒2が下周部へ旋回するにつれて順次落下していくも
のである。Then, at the point where it passes the upper circumference of the rotary cylinder 2 above the end of the flame section 8, the aggregate loaded in the recessed part 10 of the rotating conveyance device 9 rotates downward and sequentially toward the lower part as shown in the figure. The aggregate remaining in the recessed portion 10 also falls one after another as the rotary cylinder 2 rotates toward the lower circumference.
以上のような動作をくり返しながら、骨材を回転筒2の
内周部にそって、中央部の火炎部8にほとんど落下する
ことなく旋回搬送していき、他側部の排出シュート7か
ら順次排出していものである。While repeating the above-mentioned operations, the aggregate is conveyed in a circular motion along the inner periphery of the rotary tube 2 without falling into the flame section 8 in the center, and then sequentially from the discharge chute 7 on the other side. It is something to be excreted.
このように、骨材を火炎部のまわりの加熱筒の全周にそ
って旋回搬送できるため、加熱バーナーの火炎の輻射熱
や対流伝導熱で骨材が加熱されて、回転筒の内周部が過
熱されるのを防止でき、従来のように外部に無駄に熱放
散するのを防止できて、ドライヤの加熱効率の向上がは
かれるものである。In this way, the aggregate can be conveyed in a circular motion along the entire circumference of the heating tube around the flame section, so the aggregate is heated by the radiant heat of the flame of the heating burner and the convection conduction heat, and the inner circumference of the rotating tube is heated. It is possible to prevent overheating, prevent wasteful heat dissipation to the outside as in the conventional case, and improve the heating efficiency of the dryer.
実験結果によると、たとえば従来の回転筒では、第4図
の点線のように加熱バーナーの火炎部のまわりの表面温
度が350〜400℃にも熱せられていたものが、本実
施例によると実線のように150〜200℃となり、実
に約150〜200°Cもの低下がはかれるものである
。According to experimental results, for example, in a conventional rotating cylinder, the surface temperature around the flame part of the heating burner was heated to 350 to 400 degrees Celsius, as shown by the dotted line in Figure 4, but in this example, the surface temperature around the flame part of the heating burner was heated to 350 to 400 degrees Celsius, as shown by the solid line in this example. As shown in FIG.
また、骨材を回転筒の内周面そって旋回搬送するにもか
かわらず、加熱バーナーの火炎部に骨材がほとんど落下
しないようにしたため、骨材が火炎に直接接触してカー
ボンを発生し、不完全な燃焼:状態が発生するのを防止
できるものである。In addition, even though the aggregate is conveyed in a circular motion along the inner circumferential surface of the rotating cylinder, the aggregate hardly falls into the flame area of the heating burner, so the aggregate does not come into direct contact with the flame and generate carbon. , incomplete combustion: a condition that can be prevented from occurring.
第5図は本考案の旋回搬送装置9の他の実施例で、チャ
ンネル状の旋回搬送装置9の両側部に回転筒2の内周面
方向に突き出し可能に間隔調整部材14.15を取着具
16,17で取着するとともに、旋回搬送装置9の長さ
方向にわたってそれぞれ配設したものである。FIG. 5 shows another embodiment of the rotary conveyance device 9 of the present invention, in which interval adjustment members 14 and 15 are attached to both sides of the channel-shaped rotary conveyance device 9 so as to be able to protrude toward the inner peripheral surface of the rotary cylinder 2. They are attached using tools 16 and 17, and are arranged along the length of the rotating conveyance device 9, respectively.
本実施例では、骨材の供給量や加熱バーナーの火炎部の
膨出量等に合わせて旋回搬送装置を適宜に調整でき、ド
ライヤの加熱、乾燥能力に応じたものを容易に得ること
ができるものである。In this embodiment, the rotating conveyance device can be adjusted appropriately according to the amount of aggregate supplied, the amount of expansion of the flame part of the heating burner, etc., and it is possible to easily obtain a device that matches the heating and drying capacity of the dryer. It is something.
なお、旋回搬送装置を固着台に適宜の勾配のスペーサ等
を介して所定の傾斜角で固着するようにして、骨材の旋
回搬送状態を調整することもできるものである。Note that the rotating conveyance state of the aggregate can also be adjusted by fixing the rotating conveyance device to the fixing table at a predetermined inclination angle via a spacer or the like having an appropriate slope.
また、旋回搬送装置の構成部材の数量は、回転筒の直径
やドライヤの能力に応じて適宜の数とすることができる
ものである。Further, the number of constituent members of the rotating conveyance device can be set to an appropriate number depending on the diameter of the rotary cylinder and the capacity of the dryer.
なお、以上の実施例では、ドライヤに骨材を供給するも
のについて説明したが、ビチューメン等と骨材との混合
物等であってそ同様に適用できるものである。In the above embodiments, an explanation has been given of a device that supplies aggregate to a dryer, but it can also be applied to a mixture of bitumen or the like and aggregate.
以上のように本考案にあっては、ドライヤの回転筒の下
周部で骨材等を旋回搬送装置の断面がほぼコ字状のへこ
み部に入りやすく、かつ回転筒の下周面にそって素通り
しに<<シて、できるだけ多く等を旋回搬送装置に搭載
してかき上げて旋回できるようにするとともに、かき上
げた骨材等を回転筒の上周部の途中でできるだけ落下し
にくくして骨材等を火炎に直接接触して変質するのを回
避できるものである。As described above, in the present invention, aggregates, etc. can easily enter the recessed portion of the rotating conveyance device having a substantially U-shaped cross section at the lower circumference of the rotary tube of the dryer, and can be moved along the lower circumferential surface of the rotary tube. In addition to loading as many aggregates as possible onto the rotating conveyance device so that they can be scraped up and rotated, it is also possible to prevent the scraped up aggregates from falling as much as possible in the middle of the upper periphery of the rotating cylinder. This prevents aggregates from coming into direct contact with flames and deteriorating in quality.
そしてまた、骨材等を落下して加熱バーナーの円筒状の
火炎を乱すのを防止できて火炎部のまわりの回転筒の内
周部にそって旋回搬送でき、回転筒の内部空間を有利に
利用できて骨材等を有効に加熱でき、回転筒の内周部を
旋回搬送する骨材等によって回転筒が過熱するのを防止
できて、骨材等の加熱効率が著しい向上がはかれるもの
である。Furthermore, it is possible to prevent aggregates, etc. from falling and disturbing the cylindrical flame of the heating burner, and it is possible to carry them around the inner circumference of the rotating cylinder around the flame part, making the internal space of the rotating cylinder advantageous. It can be used to effectively heat aggregates, etc., and prevent the rotating tube from being overheated due to the aggregates, etc. being conveyed by rotating around the inner circumference of the rotating tube, and the heating efficiency of aggregates, etc. can be significantly improved. be.
第1図は本考案の一実施例の一部切欠した概略正面図、
第2図は同上の一部省略した拡大側断面図、第3図は同
上の旋回搬送装置部の拡大側断面図、第4図は同上の回
転筒の従来麗比較した温度分布図、第5図は同上の旋回
搬送装置部の他の実施例の拡大側断面図である。
1・・・・・・ドライヤ、2・・・・・・回転筒、6・
・・・・・加熱バーナー、訃・・・・・火炎部、9・・
・・・・旋回搬送装置、10・・・・・・へこみ部、1
3・・・・・・攪拌羽根。FIG. 1 is a partially cutaway schematic front view of an embodiment of the present invention;
Fig. 2 is an enlarged side cross-sectional view of the same as the above with a part omitted, Fig. 3 is an enlarged side cross-sectional view of the rotating conveyance unit of the same as the above, Fig. 4 is a temperature distribution diagram of the rotary cylinder of the same as the above, comparing the conventional temperature distribution. The figure is an enlarged side sectional view of another embodiment of the rotating conveyance device section same as above. 1...Dryer, 2...Rotating tube, 6.
... Heating burner, tail ... Flame part, 9...
... Rotating conveyance device, 10 ... Recessed part, 1
3... Stirring blade.
Claims (1)
筒の骨材加熱用の加熱バーナーの火炎部のまわりの内周
部に断面がほぼコ字状の旋回搬送装置をへこみ部側を内
周面に向けてかつ回転方向側の−の側端部を回転筒の内
周面からやや遠く、反対側の他の側端部を回転筒の内周
面に近づけて一定ピッチで均−状に周設し、ドライヤに
供給した骨材等をそれぞれの旋回搬送装置が回転筒の下
周部から旋回上昇するときにそれぞれのへこみ部に搭載
し、上層部を旋回通過して下周部へ旋回下降するときに
骨材等をそれぞれ順次落下自在に旋回搬送装置のへこみ
部のほぼ中央部に対向してへこみ部側がラビリンス状の
通路となるように攪拌羽根を回転筒の内周面にそれぞれ
突設したことを特徴とするアスファルトプラントのドラ
イヤ。A rotating conveyor device with a substantially U-shaped cross section is installed on the inner periphery of the rotating cylinder of the dryer, which rotates and dries the supplied aggregates, etc., around the flame section of the heating burner for heating the aggregates. The - side end facing the surface and on the rotation direction side is a little far from the inner circumferential surface of the rotating tube, and the other side end on the opposite side is close to the inner circumferential surface of the rotating tube, evenly at a constant pitch. When the rotating transport devices rotate upward from the lower periphery of the rotary cylinder, aggregates, etc. that have been supplied to the dryer are loaded into the respective recesses, pass through the upper layer, and then rotate to the lower periphery. Stirring blades are respectively protruded on the inner peripheral surface of the rotary cylinder so that the aggregates, etc. can fall one after another when descending, facing approximately the center of the recessed part of the rotating conveyor, so that the recessed part side forms a labyrinth-like passage. Asphalt plant dryer characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6916781U JPS6015763Y2 (en) | 1981-05-12 | 1981-05-12 | Asphalt plant dryer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6916781U JPS6015763Y2 (en) | 1981-05-12 | 1981-05-12 | Asphalt plant dryer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57184103U JPS57184103U (en) | 1982-11-22 |
JPS6015763Y2 true JPS6015763Y2 (en) | 1985-05-17 |
Family
ID=29865051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6916781U Expired JPS6015763Y2 (en) | 1981-05-12 | 1981-05-12 | Asphalt plant dryer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6015763Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005083641A (en) * | 2003-09-08 | 2005-03-31 | Tanaka Giken Kk | Drum structure of heating system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59123288U (en) * | 1983-02-09 | 1984-08-20 | ゼムコインタナショナル株式会社 | T-shaped blade for aggregate dryer |
-
1981
- 1981-05-12 JP JP6916781U patent/JPS6015763Y2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005083641A (en) * | 2003-09-08 | 2005-03-31 | Tanaka Giken Kk | Drum structure of heating system |
Also Published As
Publication number | Publication date |
---|---|
JPS57184103U (en) | 1982-11-22 |
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