JP3562640B2 - Agitation heat transfer type drying equipment with blower blades - Google Patents
Agitation heat transfer type drying equipment with blower blades Download PDFInfo
- Publication number
- JP3562640B2 JP3562640B2 JP2001151122A JP2001151122A JP3562640B2 JP 3562640 B2 JP3562640 B2 JP 3562640B2 JP 2001151122 A JP2001151122 A JP 2001151122A JP 2001151122 A JP2001151122 A JP 2001151122A JP 3562640 B2 JP3562640 B2 JP 3562640B2
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- Prior art keywords
- heat transfer
- drying chamber
- blade
- rotating shaft
- drying
- 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
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- Accessories For Mixers (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Description
【0001】
【発明の属する技術分野】
本発明は内周に伝熱面を有する乾燥室と、乾燥室内周の伝熱面に沿って原料を巻き上げて乾燥させる撹拌翼とからなる撹拌伝熱式乾燥装置に関する。
【0002】
【従来の技術】
従来の撹拌伝熱式乾燥装置は、原料を投入する内部が円筒形状の乾燥室と、原料に伝熱する乾燥室の円筒形内壁の伝熱面と、その伝熱面に伝熱する伝熱手段と、乾燥室の底面中央に配設されて原料を巻き上げて伝熱面に接触させる撹拌翼とからなる。このような乾燥装置は特許公報第2958869号などにより公知である。
【0003】
従来の撹拌伝熱式乾燥装置は、乾燥室の底面が平坦なため、乾燥室からの原料の回収及び乾燥品の排出に手間を要し、乾燥室の洗浄も容易ではないという問題があった。又、乾燥室の底面が伝熱面ではないため、乾燥室の容積に比して乾燥能力が小さいという問題があった。
【0004】
【発明が解決しようとする課題】
本発明は上記問題を解決するためになされたものであり、その課題は、乾燥室からの原料の回収及び乾燥品の排出並びに乾燥室の洗浄が容易であり、かつ乾燥室の容積に比して乾燥能力が大きく、乾燥効率の高い撹拌伝熱式乾燥装置を提供することにある。
【0005】
【課題を解決するための手段】
前記課題を達成するため、本発明が採用する手段は、乾燥室の上部を円筒形状に、下部を円錐形状に形成し、その乾燥室の上部及び下部の円筒状及び円錐状内壁面を伝熱面に形成し、乾燥室の下部に原料投入口を、乾燥室の中央部の円筒状面に乾燥品の排出口をそれぞれ設け、円錐状面下部には残品の排出口を設け、乾燥室の中央に原料を撹拌しながら伝熱面に沿って持ち上げる撹拌翼と、その上方に下降渦流を発生させる送風翼とを同軸に設けたことにある。伝熱面は周知のように、乾燥室を囲むジャケットにより形成する。
【0006】
撹拌翼と送風翼の共通の回転軸は乾燥室の上下において軸受けし、その回転軸を駆動するモータは天井の上に配置することが好ましい。
【0007】
下部の撹拌翼は、軸心に関して対称な複数の羽根、例えば4枚の羽根からなり、各羽根は回転軸下端部から円錐内面状伝熱面に沿って回転方向とは逆向きのらせん状に延長しついで円筒内面状伝熱面に沿って同じく回転方向とは逆向きのらせん状に延長する撹拌羽根であり、その外周縁は乾燥室下部の円錐内面状伝熱面及び円筒内面状伝熱面に接触しない程度に近接する。
【0008】
上部の送風翼は、両吸い込み上下吹き出し形とし、乾燥室の排気口は送風翼よりも高い位置に設けることが好ましい。
【0009】
【発明の実施の形態】
本発明の乾燥装置を図面に示す実施例に基づいて説明する。図1は本発明実施例の乾燥装置の縦断面図、図2は図1の送風翼の正面図、図3は図2のIII−III線矢視図である。
【0010】
図1に示すように、乾燥装置の乾燥室1は架台2の上に立設される。乾燥室1は円筒形状の上部3と下方に先細る円錐形状の下部4とからなり、上部3と下部4はジャケット5に囲まれる。ジャケット5は図外の熱源から蒸気等の熱媒体を導入する入口6と排出する出口7とを有する。これにより、乾燥室1の上部及び下部内壁面は円筒内面状伝熱面8及び円錐内面状伝熱面9となる。
【0011】
乾燥室1の下部に原料投入口10が、中央部に乾燥品排出口11がそれぞれ設けられる。乾燥室1の中央に上下に貫通する回転軸12を配設する。回転軸12は乾燥室1の上部3及び下部4に設けた軸受13,14により軸支し、上部3の天井に設けたモータ15により回転駆動する。
【0012】
図1ないし図3に示すように、回転軸12の中央部及び下端部にそれぞれ中央ボス16及び下部ボス17を固定し、中央ボス16から4本のアーム18を等中心角で半径方向に突出させる。回転軸12の下半部に4枚の羽根20からなる撹拌翼19を取り付ける。各羽根20は回転軸12に等中心角に配置し、その下端部を下部ボス17に、上端部をアーム18にそれぞれ固定する。各羽根20は下部ボス17から外周縁が乾燥室1の円錐内面状伝熱面9に接触はしないが近接して回転方向とは逆向きのらせん状に円筒内面状伝熱面8まで延長し、そこから外周縁が円筒内面状伝熱面8に接触はしないが近接して回転方向とは逆向きのらせん状に延長してアーム18に至る。各羽根20の下端部と上端部を上から見た中心角は直角より少し大きい角度である。
【0013】
回転軸12の上半部に送風翼21を固定する。送風翼21は両吸い込み上下吹き出し形である。乾燥室1の天井に近い壁面に排気口22を設ける。
【0014】
次に、図1に示す乾燥装置の動作を説明する。
【0015】
先ず、矢印Aで示すように、原料を原料投入口10から乾燥室1内に投入し、モータ15を起動して回転軸12を矢印B方向に回転させる。又、同時に蒸気をジャケット5に導入して伝熱面8,9を加熱する。
【0016】
回転軸12と共に上の送風翼21と下の撹拌翼19が回転し、撹拌翼19の羽根20は原料を伝熱面9,8に沿って下から上へ、伝熱面8,9により加熱しながら持ち上げる。羽根20の上端部まで持ち上げられた原料は乾燥室1の下部の円錐内面状の伝熱面9へ落下し、再び羽根20により下から上へ伝熱面9,8で加熱されながら、持ち上げられる。原料は落下したとき、円錐内面状の伝熱面9に叩きつけられて、円錐状伝熱面9から強力な伝熱を受けて乾燥が促進する。
【0017】
乾燥室1の上部の送風翼21の上半のファンは、矢印Cで示すように、原料から蒸発した水分を排気口22から排出し、下半のファンは、矢印Dで示すように、高温の下降渦流を発生して原料を乾燥させる。
【0018】
投入した原料が乾燥した乾燥品となったとき、矢印Eで示すように、排出口11を開き、乾燥品を回収する。残品は乾燥室1の下部4の内面が下方に先細る円錐状であるから、残品排出口23より残った乾燥品は容易に残らず排出することができる。
【0019】
乾燥室1の上部3の内壁面は円筒形状であり、下部4の内壁面は下方に先細る円錐形状であるから、内部の残滓は上から残品排出口23へ洗い流すことができる。したがって、乾燥室1の洗浄は至極容易である。
【0020】
【発明の効果】
上記の通り、本発明の乾燥装置は、従来の乾燥室の底面が平坦で伝熱面を形成していなかったものとは異なり、乾燥室が円筒形状の上部と、下方に先細る円錐形状の下部からなり、円筒形状の上部内壁面だけでなく、円錐形状の下部内壁面も伝熱面に形成され、乾燥室の上部に送風翼が下部の撹拌翼と同軸に配設されているから、次のような優れた効果を奏する。
1.乾燥室の円錐形状の下部に設けた残品排出口を利用することにより、従来、困難であった乾燥室内に残った原料及び乾燥品の回収・排出も、残滓の洗浄水による洗い出しも容易かつ確実に実施することができる。
2.乾燥室の円錐形状の下部内面も伝熱面であるから、伝熱面が拡大し、乾燥能力が増大する。
3.乾燥室の上部に設けた送風翼が高温の下降渦流を発生して、原料水分の蒸発を促進させるから、乾燥効率が向上する。
【図面の簡単な説明】
【図1】本発明実施例の乾燥装置の縦断面図、
【図2】図1の送風翼の正面図、
【図3】図2のIII−III線矢視図、
【符号の説明】
1:乾燥室
2:架台
3:上部
4:下部
5:ジャケット
6:入口(熱媒体)
7:出口(熱媒体)
8:伝熱面(円筒内面状)
9:伝熱面(円錐内面状)
10:原料投入口
11:排出口
12:回転軸
13,14:軸受
15:モータ
16:中央ボス
17:下部ボス
18:アーム
19:撹拌翼
20:羽根
21:送風翼
22:排気口
23:残品排出口[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a stirring heat transfer type drying apparatus including a drying chamber having a heat transfer surface on the inner periphery, and a stirring blade for winding up and drying the raw material along the heat transfer surface around the drying chamber.
[0002]
[Prior art]
Conventional stirring heat transfer type drying equipment has a cylindrical drying chamber into which the raw material is charged, a heat transfer surface on the cylindrical inner wall of the drying chamber that transfers heat to the raw material, and a heat transfer surface that transfers heat to the heat transfer surface. And a stirring blade disposed in the center of the bottom of the drying chamber to wind up the raw material and contact the heat transfer surface. Such a drying apparatus is known, for example, from Japanese Patent Publication No. 2958869.
[0003]
The conventional agitated heat transfer type drying apparatus has a problem that since the bottom surface of the drying chamber is flat, it takes time to collect raw materials from the drying chamber and discharge dried products, and it is not easy to clean the drying chamber. . Further, since the bottom surface of the drying chamber is not a heat transfer surface, there is a problem that the drying capacity is small compared to the volume of the drying chamber.
[0004]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-mentioned problems, and its object is to recover the raw materials from the drying chamber, discharge the dried product, and wash the drying chamber, and to reduce the volume of the drying chamber. The present invention is to provide a stirring heat transfer type drying device having high drying ability and high drying efficiency.
[0005]
[Means for Solving the Problems]
Means adopted by the present invention to achieve the above object is to form the upper part of the drying chamber into a cylindrical shape and the lower part into a conical shape, and to transfer heat to the upper and lower cylindrical and conical inner wall surfaces of the drying chamber. The drying chamber is provided with a raw material input port at the bottom of the drying chamber, a dry product outlet at the cylindrical surface at the center of the drying chamber, and a residual product outlet at the bottom of the conical surface. A stirring blade for raising the raw material along the heat transfer surface while stirring the raw material and a blowing blade for generating a downward vortex are provided coaxially at the center. The heat transfer surface is formed by a jacket surrounding the drying chamber, as is well known.
[0006]
It is preferable that a common rotation axis of the stirring blade and the blower blade is supported above and below the drying chamber, and a motor for driving the rotation axis be disposed on a ceiling.
[0007]
The lower stirring blade is composed of a plurality of blades symmetrical with respect to the axis, for example, four blades, and each blade has a spiral shape opposite to the rotation direction along the conical inner surface heat transfer surface from the lower end of the rotation shaft. It is a stirring blade that extends and then spirals along the inner heat transfer surface of the cylinder in the same direction as the direction of rotation. The outer periphery of the stirring blade is a conical inner heat transfer surface and a lower heat transfer surface at the bottom of the drying chamber. Close enough to not touch the surface.
[0008]
It is preferable that the upper blowing blade is of a double suction upper and lower blowing type, and the exhaust port of the drying chamber is provided at a position higher than the blowing blade.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
A drying apparatus according to the present invention will be described based on an embodiment shown in the drawings. 1 is a longitudinal sectional view of a drying apparatus according to an embodiment of the present invention, FIG. 2 is a front view of the blower blade of FIG. 1, and FIG. 3 is a view taken along line III-III of FIG.
[0010]
As shown in FIG. 1, a drying chamber 1 of a drying device is erected on a
[0011]
A
[0012]
As shown in FIGS. 1 to 3, a
[0013]
A
[0014]
Next, the operation of the drying apparatus shown in FIG. 1 will be described.
[0015]
First, as shown by an arrow A, a raw material is charged into the drying chamber 1 from the raw
[0016]
The
[0017]
The upper half fan of the
[0018]
When the input raw material becomes a dried product, the outlet 11 is opened as shown by an arrow E, and the dried product is collected. Since the inner surface of the
[0019]
Since the inner wall surface of the
[0020]
【The invention's effect】
As described above, the drying apparatus of the present invention is different from the conventional drying chamber in which the bottom surface is flat and does not form a heat transfer surface, and the drying chamber has a cylindrical upper portion and a conical shape tapering downward. Since it consists of the lower part, not only the cylindrical upper inner wall surface, but also the conical lower inner wall surface is formed on the heat transfer surface, and the blowing blade is arranged coaxially with the lower stirring blade at the upper part of the drying chamber, It has the following excellent effects.
1. By using the leftover discharge port provided in the lower part of the conical shape of the drying chamber, it is easy and easy to collect and discharge the raw materials and dried products remaining in the drying chamber, and to wash out the residue with washing water, which was difficult in the past. It can be implemented reliably.
2. Since the inner surface of the conical lower portion of the drying chamber is also a heat transfer surface, the heat transfer surface is enlarged, and the drying capacity is increased.
3. The blowing blades provided at the upper part of the drying chamber generate a high-temperature descending vortex to promote the evaporation of the raw material moisture, so that the drying efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a drying apparatus according to an embodiment of the present invention,
FIG. 2 is a front view of the blower of FIG. 1;
FIG. 3 is a view taken along line III-III in FIG. 2;
[Explanation of symbols]
1: Drying room 2: Stand 3: Upper part 4: Lower part 5: Jacket 6: Inlet (heat medium)
7: Exit (heat medium)
8: Heat transfer surface (cylindrical inner surface)
9: Heat transfer surface (conical inner surface)
10: raw material input port 11: discharge port 12: rotating
Claims (2)
Priority Applications (1)
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JP2001151122A JP3562640B2 (en) | 2001-05-21 | 2001-05-21 | Agitation heat transfer type drying equipment with blower blades |
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JP2001151122A JP3562640B2 (en) | 2001-05-21 | 2001-05-21 | Agitation heat transfer type drying equipment with blower blades |
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JP2002350053A JP2002350053A (en) | 2002-12-04 |
JP3562640B2 true JP3562640B2 (en) | 2004-09-08 |
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JP2001151122A Expired - Fee Related JP3562640B2 (en) | 2001-05-21 | 2001-05-21 | Agitation heat transfer type drying equipment with blower blades |
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Cited By (1)
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KR101169711B1 (en) * | 2009-10-14 | 2012-07-30 | 김태규 | Sterilizing Drying Apparatus |
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JP4584737B2 (en) * | 2005-02-25 | 2010-11-24 | 株式会社神鋼環境ソリューション | Evaporative stirring tank operation method |
KR100755012B1 (en) * | 2006-10-18 | 2007-09-06 | 전근식 | Stock farm waste matter drying machine |
JP5222183B2 (en) * | 2009-03-03 | 2013-06-26 | 正夫 金井 | Continuous dryer |
KR101395605B1 (en) | 2013-11-08 | 2014-05-16 | (주) 오카도라코리아 | Rotational type drying apparatus for directly using hot air |
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CN111189307A (en) * | 2019-12-27 | 2020-05-22 | 湖州奥捷节能保温建材有限公司 | Drying device is used in production of real bionical composite insulation material of stone |
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2001
- 2001-05-21 JP JP2001151122A patent/JP3562640B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101169711B1 (en) * | 2009-10-14 | 2012-07-30 | 김태규 | Sterilizing Drying Apparatus |
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