JP2766847B2 - Stirrer - Google Patents
StirrerInfo
- Publication number
- JP2766847B2 JP2766847B2 JP30094493A JP30094493A JP2766847B2 JP 2766847 B2 JP2766847 B2 JP 2766847B2 JP 30094493 A JP30094493 A JP 30094493A JP 30094493 A JP30094493 A JP 30094493A JP 2766847 B2 JP2766847 B2 JP 2766847B2
- Authority
- JP
- Japan
- Prior art keywords
- stirring
- blade
- stirring blade
- stirrer
- stage
- 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 - Lifetime
Links
Landscapes
- Accessories For Mixers (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、攪拌装置、特にグラス
ライニング加工に好適な攪拌装置に関する。更に詳しく
は、低粘度域及び中粘度域での液の混合、固体粒子の液
中への懸濁と分散、相互に不溶な２液の分散接触、液中
への気体の分散、攪拌液の除熱あるいは加熱などの攪拌
を行う混合機あるいは反応機として用いられるグラスラ
イニング加工の容易な攪拌装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirrer, particularly to a stirrer suitable for glass lining. More specifically, mixing of liquids in the low-viscosity region and medium-viscosity region, suspension and dispersion of solid particles in the liquid, dispersion contact of two mutually insoluble liquids, dispersion of gas in the liquid, The present invention relates to a stirrer which is easily used for a glass lining process and is used as a mixer or a reactor for stirring such as heat removal or heating.
【０００２】[0002]
【従来の技術】近年、化学工業や薬品工業，食品工業等
で必要とされている低粘度から高粘度の液体と固体、液
体と液体、液体と気体の効率的な混合，溶解，反応等に
対応できる攪拌装置が要求されている。これらの要求に
応えるものとして、パドル翼，タービン翼，プロペラ
翼，ブルマージン翼，ゲート翼，格子翼などを備えた攪
拌装置が開発されている。しかしながらこれらの攪拌装
置は、多くの場合、攪拌翼の上と下とに分かれた２つの
上下方向の循環流を形成する。このような上下循環流が
存在する流況のもとでは液組成が一つの循環流から次の
循環流へと段階的に移行しながら交換されるので全域の
混合は極めて非効率的であった。その結果、混合特性を
向上させるため高速攪拌を必要とし、多大の消費動力を
要するという問題点を有していた。そこで、これらの問
題点を解決するものとして、特開昭６１−２００８４
２号公報には、攪拌軸に、攪拌槽の底壁面に下端部を摺
接させて槽底部に配置されたボトムパドルと、前記ボト
ムパドルより上位部分に、アーム部分と該アーム部分と
直角方向に延びるストリップから構成される格子翼を装
着すると共に、攪拌槽の側壁面に下部から上部まで軸方
向に沿う複数本の邪魔板を間隔をおき配設した攪拌機が
開示されている。また、特開平５−４９８９０号公報
には、竪型円筒状の攪拌槽内中心部に回転軸を垂設し、
この回転軸に長方形状の複数のパドル翼を上下多段に装
着すると共に、最下段のパドル翼を攪拌槽の底面に近接
させて配置し、かつ、上段に位置する各パドル翼を上下
で隣接する下段のパドル翼に対して９０度未満の交差角
度で回転方向に先行させて配置した攪拌装置が開示され
ている。2. Description of the Related Art In recent years, low-viscosity liquids and solids, liquids and liquids, liquids and liquids, and efficient mixing, dissolving, and reaction of liquids and gases have been required in the chemical, pharmaceutical, and food industries. There is a need for a stirrer that can be used. In order to meet these requirements, a stirrer equipped with a paddle blade, a turbine blade, a propeller blade, a bulmar blade, a gate blade, a lattice blade, and the like has been developed. However, these stirrers often form two vertical circulations, one above and one below. Under such a vertical flow, the liquid composition was exchanged while shifting stepwise from one circulation flow to the next, so that mixing over the entire area was extremely inefficient. . As a result, there has been a problem that high-speed stirring is required to improve the mixing characteristics, and a large amount of power is consumed. In order to solve these problems, Japanese Patent Laid-Open No. 61-20084
No. 2 discloses a bottom paddle disposed on the bottom of the stirring tank by sliding the lower end of the bottom wall of the stirring tank on the stirring shaft, and an arm portion and a portion perpendicular to the arm portion above the bottom paddle. In addition, a stirrer is disclosed in which a lattice blade composed of strips extending from the stirrer is mounted, and a plurality of baffles are arranged at intervals on the side wall surface of the stirrer from the lower part to the upper part in the axial direction. In Japanese Patent Application Laid-Open No. 5-49890, a rotating shaft is vertically provided at the center of a vertical cylindrical stirring tank.
A plurality of rectangular paddle blades are mounted on the rotating shaft in upper and lower stages, and the lowermost paddle blades are arranged close to the bottom of the stirring tank, and each paddle blade located in the upper stage is vertically adjacent to each other. A stirrer is disclosed that precedes the lower paddle blade in the rotational direction at an intersection angle of less than 90 degrees.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、上段攪拌翼が略長方形で下段攪拌翼の左右
方向の翼径が略同一なため下段攪拌翼からの上昇流が上
段攪拌翼の吐出流で阻害され、混合特性に欠け完全混合
に時間を要し槽内での滞留時間が長く、生産性に欠ける
という問題点を有していた。また、短時間に完全混合を
行おうとすると攪拌翼の回転数を上げねばならず、更
に、翼面積が大きいため多大の動力を消費するという問
題点を有していた。However, in the above-mentioned conventional construction, since the upper stirring blade is substantially rectangular and the diameter of the lower stirring blade in the left-right direction is substantially the same, the upward flow from the lower stirring blade is discharged from the upper stirring blade. However, there was a problem that the mixing was impeded by the flow, the mixing characteristics were poor, time was required for complete mixing, the residence time in the tank was long, and the productivity was low. In addition, in order to perform complete mixing in a short time, the number of rotations of the stirring blade must be increased, and further, there is a problem that a large power is consumed due to a large blade area.
【０００４】本発明は上記従来の問題点を解決するもの
で、下段攪拌翼からの上昇流が上段攪拌翼の吐出流によ
る影響をほとんど受けることなく液面付近まで速やかに
上昇させるとともに、液面付近の液を一気に槽底部まで
運び槽内全体を短時間で均一な混合を達成することが可
能で、更に、槽底部のデッドスペースをなくし槽全域に
わたる循環流を形成することができ、その結果低速回
転、低消費動力で短時間に完全混合ができ、更に形状が
シンプルなのでグラスライニングにも容易に対応できる
低原価で量産性に優れた攪拌装置を提供することを目的
とする。The present invention solves the above-mentioned conventional problems. The rising flow from the lower stirring blade is quickly raised to near the liquid level almost without being affected by the discharge flow of the upper stirring blade. The liquid in the vicinity can be transported to the bottom of the tank at a stretch, and the entire inside of the tank can be uniformly mixed in a short time.Furthermore, the dead space at the bottom of the tank can be eliminated and a circulation flow can be formed over the entire area of the tank. It is an object of the present invention to provide a low-cost, mass-productive agitator that can be completely mixed in a short time with low-speed rotation and low power consumption and has a simple shape, so that it can easily cope with glass lining.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するため
に本発明の攪拌装置は、次の構成を有している。請求項
１に記載の攪拌装置は、竪型円筒状の攪拌槽と、前記攪
拌槽内の中心部に槽外から回転自在に垂設された攪拌軸
と、前記攪拌軸に装着された１乃至複数の略台形状に形
成されかつ下部中央部に凹部を備えた上段攪拌翼と、前
記上段攪拌翼と直交状に交差して装着された略長方形状
に形成されかつ上部中央部に凹部を備えた下段攪拌翼
と、前記下段攪拌翼に一体に又は別個に連設され回転方
向に対し逆向きに傾斜して装着されかつ前記攪拌軸を中
心として対称位置に切り込み部が形成された後退翼と、
を備えた構成を有している。請求項２に記載の攪拌装置
は、請求項１において、前記上段攪拌翼の最大径（ａ）
と前記下段攪拌翼の最大径（ｄ）の比が０．１＜ａ／ｄ
≦１である構成を有している。請求項３に記載の攪拌装
置は、請求項１又は２の内いずれか１において、前記上
段攪拌翼の最大径（ａ）と上端部線の接線と側端線の接
線の交点間の距離（ｃ）との比が０．０５＜ｃ／ａ＜１
である構成を有している。。請求項４に記載の攪拌装置
は、請求項１乃至３の内いずれか１において、上記上段
攪拌翼の最大径（ａ）と前記上段攪拌翼の前記凹部の開
口幅（ｂ）との比が０．１≦ｂ／ａ＜１であり、及び／
又は前記下段攪拌翼の最大径（ｄ）と前記下段攪拌翼の
凹部の開口幅（ｅ）との比が０．１≦ｅ／ｄ＜１である
構成を有している。請求項５に記載の攪拌装置は、請求
項１乃至４の内いずれか１において、前記上段攪拌翼の
前記凹部の深さ（ｊ）と前記下段攪拌翼の前記凹部の深
さ（ｋ）の和と、前記各凹部の最深部間の距離ｌとの比
が０．１≦ｌ／（ｊ＋ｋ）＜２である構成を有してい
る。請求項６に記載の攪拌装置は、請求項１乃至５の内
いずれか１において、前記後退翼の傾斜角αが５°＜α
＜７５°である構成を有している。請求項７に記載の攪
拌装置は、請求項１乃至６の内いずれか１において、前
記攪拌軸の少なくとも上段、下段の攪拌翼装着部と前記
上段攪拌翼、前記下段攪拌翼及び前記後退翼の外周に積
層されたグラスライニング層を備えた構成を有してい
る。In order to achieve this object, a stirring device according to the present invention has the following arrangement. The stirrer according to claim 1, wherein the stirrer has a vertical cylindrical stirring tank, a stirring shaft rotatably suspended from the outside of the tank at the center of the stirring tank, and 1 to 4 attached to the stirring shaft. A plurality of upper stirring blades formed in a substantially trapezoidal shape and provided with a recess in the lower central portion, and provided with a recessed portion formed in a substantially rectangular shape mounted orthogonally to the upper stirring blade and intersecting the upper stirring blade. A lower-stage stirring blade, and a retreating blade integrally or separately connected to the lower-stage stirring blade, mounted to be inclined in a direction opposite to the rotation direction, and formed with a cut portion at a symmetric position about the stirring shaft. ,
Is provided. The stirrer according to claim 2 is the stirrer according to claim 1, wherein a maximum diameter (a) of the upper stage impeller is set.
And the ratio of the maximum diameter (d) of the lower stage impeller is 0.1 <a / d.
≦ 1. According to a third aspect of the present invention, in the stirrer according to any one of the first and second aspects, a distance between an intersection of a maximum diameter (a) of the upper stirring blade, a tangent of an upper end line, and a tangent of a side end line ( c) is 0.05 <c / a <1
It has the following configuration. . According to a fourth aspect of the present invention, in the stirrer according to any one of the first to third aspects, a ratio of a maximum diameter (a) of the upper stage impeller to an opening width (b) of the recess of the upper stage impeller is set. 0.1 ≦ b / a <1, and / or
Alternatively, a ratio of a maximum diameter (d) of the lower stirring blade to an opening width (e) of a concave portion of the lower stirring blade is 0.1 ≦ e / d <1. According to a fifth aspect of the present invention, in the stirring device according to any one of the first to fourth aspects, the depth (j) of the recess of the upper stirring blade and the depth (k) of the recess of the lower stirring blade are determined. The ratio of the sum to the distance l between the deepest portions of the concave portions is 0.1 ≦ l / (j + k) <2. According to a sixth aspect of the present invention, in the stirrer according to any one of the first to fifth aspects, the inclination angle α of the swept wing is 5 ° <α.
<75 °. The stirrer according to claim 7 is the stirrer according to any one of claims 1 to 6, wherein at least the upper and lower stirring blade mounting portions of the stirring shaft and the upper stirring blade, the lower stirring blade, and the retreating blade. It has a configuration provided with a glass lining layer laminated on the outer periphery.
【０００６】ここで、上段攪拌翼、下段攪拌翼及び後退
翼の稜線や角部は湾曲状に形成されるのが望ましい。流
体抵抗の軽減化、形状のシンプル化を図るとともにグラ
スライニングを行った際にガラスの剥離を防止するため
である。Here, it is desirable that the ridges and corners of the upper-stage stirring blade, the lower-stage stirring blade, and the retreating blade are formed in a curved shape. This is because the fluid resistance is reduced and the shape is simplified, and the glass is prevented from peeling when the glass lining is performed.
【０００７】[0007]
【作用】この構成によって、上段攪拌翼が略台形状で上
側が狭く形成されているのでその分吐出力を弱くするこ
とができる。その結果、下段攪拌翼からの上昇流が妨げ
られることなく、槽底部の液等を液面付近まで短時間で
上昇させることができる。また、上段攪拌翼のｃ／ａ比
を変えることにより下段攪拌翼からの上昇流を妨げない
ように吐出量のバランスをコントロールすることができ
る。後退翼が傾斜角αが５°〜７５°で傾斜しているの
で、コンタミ等を生ずることなく槽底部の液等の吐出力
を大きくすることができる。また、この吐出流は壁面を
伝わって上昇流となり、槽上部の液を一気に槽底部にま
で運ぶ循環流を形成することができるので槽内全体の均
一な混合を短時間で図ることができ混合特性を向上させ
ることができる。通常、上段攪拌翼の形状が台形である
場合、上部液は、下方に進むにつれて徐々に遠心力の影
響を受けやすくなり、その結果、槽底部への液の移動が
遅れるが、上段攪拌翼の下部中央部及び下段攪拌翼の上
部中央部に各々凹部が形成されているので、攪拌軸の回
転によりこれらの凹部に低圧部が発生し、液は低圧側へ
移動していくので、遠心力の影響を軽減化することがで
き円滑に槽上部の液を槽底部まで移動させることができ
る。その結果、効率の良い槽全域にわたる循環流を円滑
に形成することができるので低速回転で完全混合を行う
ことができる。上段攪拌翼と下段攪拌翼の翼間距離を極
めて狭くまたは０に形成したので各攪拌翼による上下方
向の循環流の生成を防ぎ液間の界面の発生を防止したこ
とにより、槽上部と槽下部の液の伝達を速やかに行うこ
とができる。この液の伝達は槽全体に及ぶ大きな循環流
を作り出すので、消費動力を著しく軽減化できる。攪拌
軸を中心として、後退翼間に間隙を形成しているので軸
真下の液不動部に圧力差を生じさせるので軸直下まで液
の混合をスムーズに行いデッドスペースを生じることが
なく、短時間で全体の均一混合化を向上させることがで
きる。攪拌翼や後退翼の形状が湾曲状に形成され、か
つ、シンプルなので強固なグラスライニングの施工が簡
単に行うことができ、また上下二段の翼の交差角度を９
０度に配置したので機械的なバランスがとれ運転中の事
故を極めて少なくすることができる。With this configuration, the upper-stage agitating blade is formed in a substantially trapezoidal shape and the upper side is formed narrower, so that the discharging force can be reduced correspondingly. As a result, the liquid and the like at the bottom of the tank can be raised to near the liquid level in a short time without obstructing the upward flow from the lower stirring blade. Further, by changing the c / a ratio of the upper stirring blade, the discharge amount balance can be controlled so as not to hinder the upward flow from the lower stirring blade. Since the swept wing is inclined at an inclination angle α of 5 ° to 75 °, the discharge force of the liquid or the like at the bottom of the tank can be increased without causing contamination or the like. In addition, this discharge flow becomes a rising flow along the wall surface, and a circulating flow that carries the liquid at the top of the tank to the bottom of the tank at a stretch can be formed, so that uniform mixing in the entire tank can be achieved in a short time. The characteristics can be improved. Usually, when the shape of the upper stirring blade is trapezoidal, the upper liquid gradually becomes more susceptible to the centrifugal force as it goes downward, and as a result, the movement of the liquid to the bottom of the tank is delayed. Since concave portions are formed in the lower central portion and the upper central portion of the lower stirring blade, respectively, low pressure portions are generated in these concave portions by rotation of the stirring shaft, and the liquid moves to the low pressure side, so that the centrifugal force is reduced. The influence can be reduced and the liquid at the top of the tank can be smoothly moved to the bottom of the tank. As a result, an efficient circulating flow over the entire tank can be smoothly formed, so that complete mixing can be performed at a low rotation speed. The distance between the upper and lower stirring blades was made extremely small or zero, preventing the generation of vertical circulating flow by each stirring blade and preventing the generation of an interface between liquids. The liquid can be transmitted quickly. This liquid transmission creates a large circulating flow over the entire vessel, which can significantly reduce power consumption. Since a gap is formed between the retreating wings with the stirring shaft as the center, a pressure difference is generated in the liquid immovable part immediately below the shaft, so that the liquid is mixed smoothly just below the shaft and no dead space is generated, and the With this, the entire uniform mixing can be improved. The shape of the agitating blade and the retreating blade is formed in a curved shape and is simple, so that a strong glass lining can be easily constructed.
Since it is arranged at 0 degrees, mechanical balance can be maintained and accidents during operation can be extremely reduced.
【０００８】[0008]
【実施例】以下本発明の一実施例について、図面を参照
しながら説明する。図１は本発明の一実施例における攪
拌装置の上段，下段攪拌翼を平面状に表した模式図であ
り、図２は本発明の一実施例における攪拌装置の攪拌翼
の要部斜視図であり、図３は本発明の一実施例における
攪拌装置の要部断面斜視図である。図中、１は攪拌軸、
２は攪拌軸１に装着された略台形状に形成された上段攪
拌翼、３は上段攪拌翼２の下端部の中央部を攪拌軸１を
頂点として略三角状又は略台形状，略円弧状に切り込ま
れた上段攪拌翼凹部、４は攪拌軸１に上段攪拌翼２と直
交状に攪拌軸１に装着された略長方形状に形成された下
段攪拌翼、５，５′は下段攪拌翼４と一体に形成されて
攪拌軸１の回転方向に対して逆方向に折曲げ形成された
後退翼である。後退翼５，５′は下部攪拌翼４と一体に
形成する代わりに別個作製し下段攪拌翼４の下面に固定
するようにしてもよい。６は下段攪拌翼２の上端部の中
央部を攪拌軸２を頂点として逆三角形状又は逆台形状，
逆円弧状に切り込まれた下段攪拌翼凹部、７は攪拌軸１
を中心として所定角度で又は略台形状に切り込まれた後
退翼切り込み部、８は竪型円筒状に形成された攪拌槽、
９はジャケット、１０は必要に応じて攪拌槽８の壁部の
縦方向に対し平行又は垂直に配置される１乃至複数本の
各種の形状からなるバッフル、１１はモータである。ａ
は上段攪拌翼２の下部の最大径、ｂは上段攪拌翼凹部３
の下面の開口幅、ｃは上段攪拌翼２の上端部線の接線と
側端線の接線の交点間の距離、ｄは下段攪拌翼４の最大
径、ｅは下段攪拌翼凹部６の上面の開口幅、ｆは上段攪
拌翼２の全長、ｇは下段攪拌翼４の全長、ｈは後退翼５
の垂直線上の長さ、ｉはｇとｈの和、ｊは上段攪拌翼凹
部３の深さ、ｋは下段攪拌翼凹部６の深さ、ｌは上段攪
拌翼凹部３と下段攪拌翼凹部６の最深部間の距離、αは
攪拌軸１の回転方向と逆方向に折曲げ形成された後退翼
５，５′の傾斜角である。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing the upper and lower stirring blades of the stirring device according to one embodiment of the present invention in a plan view, and FIG. 2 is a perspective view of a main part of the stirring blade of the stirring device according to one embodiment of the present invention. FIG. 3 is a cross-sectional perspective view of a main part of a stirrer according to an embodiment of the present invention. In the figure, 1 is a stirring shaft,
Reference numeral 2 denotes a substantially trapezoidal upper stirring blade mounted on the stirring shaft 1, and reference numeral 3 denotes a substantially triangular or substantially trapezoidal shape or a substantially arcuate shape with the stirring shaft 1 as a vertex at the center of the lower end of the upper stirring blade 2. The upper stirring blade recess 4 is cut into a lower stirring blade formed in a substantially rectangular shape and attached to the stirring shaft 1 at right angles to the upper stirring blade 2 on the stirring shaft 1, and 5, 5 'are lower stirring blades. 4 are swept back blades formed integrally with the stirrer 4 and bent in a direction opposite to the rotation direction of the stirring shaft 1. The retreating blades 5 and 5 ′ may be separately formed instead of being formed integrally with the lower stirring blade 4 and fixed to the lower surface of the lower stirring blade 4. 6 is an inverted triangular or inverted trapezoidal shape with the center of the upper end of the lower stage impeller 2 as the apex of the stirring shaft 2;
The lower stirring blade recess cut into an inverted arc shape, 7 is the stirring shaft 1
A retreating wing cut portion cut into a predetermined angle or substantially trapezoidal shape around the center, 8 is a stirring tank formed in a vertical cylindrical shape,
Reference numeral 9 denotes a jacket, 10 denotes one or a plurality of baffles of various shapes arranged parallel or perpendicular to the longitudinal direction of the wall of the stirring tank 8 as required, and 11 denotes a motor. a
Is the maximum diameter of the lower portion of the upper stirring blade 2, and b is the recess 3 of the upper stirring blade.
, C is the distance between the intersections of the tangents of the upper end line and the side end line of the upper stirring blade 2, d is the maximum diameter of the lower stirring blade 4, and e is the upper surface of the lower stirring blade recess 6. The opening width, f is the total length of the upper stirring blade 2, g is the total length of the lower stirring blade 4, h is the retreating blade 5
, I is the sum of g and h, j is the depth of the upper stirring blade recess 3, k is the depth of the lower stirring blade recess 6, l is the upper stirring blade recess 3 and the lower stirring blade recess 6. Is the inclination angle of the swept wings 5, 5 'formed in a direction opposite to the rotation direction of the stirring shaft 1.
【０００９】ここで、上段攪拌翼凹部３の開口幅（ｂ）
と上段攪拌翼２の最大径（ａ）との比はｂ／ａ＝０．９
〜０．１、好ましくはｂ／ａ＝０．８〜０．３、更に好
ましくはｂ／ａ＝０．８〜０．５に形成されるのが望ま
しい。ｂ／ａが０．８より大きくなるに従い下段攪拌翼
４の上昇流を妨げる傾向が顕著になりだし、また、ｂ／
ａが０．５より小さくなるにつれ攪拌翼の内側と外側で
の圧力差の劣弱化が顕在化してくるのでいずれも好まし
くない。上段攪拌翼２の最大径（ａ）と上段攪拌翼２の
上端部線の接線と側端線の接線の交点間の距離（ｃ）と
の比は、ｃ／ａ＝０．９５〜０．４０、好ましくはｃ／
ａ＝０．９〜０．４５、更に好ましくはｃ／ａ＝０．８
〜０．４５に形成されるのが望ましい。ｃ／ａが０．８
より大きくなるに従い遠心方向への吐出流の影響を受け
スムーズな循環流の形成が不良となる傾向が顕著になり
だし、また、ｃ／ａが０．４５より小さくなるにつれ上
部液の攪拌不足の傾向が顕在化してくるのでいずれも好
ましくない。下段攪拌翼４の最大径（ｄ）と下段攪拌翼
凹部６の開口幅（ｅ）の比はｅ／ｄ＝０．９〜０．４、
好ましくはｅ／ｄ＝０．８５〜０．５、更に好ましくは
ｅ／ｄ＝０．８〜０．６に形成されるのが望ましい。ｄ
／ｅが０．８より大きくなるに従い下段攪拌翼４の上昇
流を妨げる傾向が顕著になりだし、また、ｅ／ｄが０．
６より小さくなるにつれ圧力差が弱くなりかつグラスラ
イニングの施工性の困難性や上段攪拌翼２からの液の伝
達が悪くなる傾向が顕在化してくるのでいずれも好まし
くない。上段攪拌翼２の最大径（ａ）と下段攪拌翼４の
最大径（ｄ）の比はａ／ｄ＝０．９５〜０．３、好まし
くはａ／ｄ＝０．９〜０．４、更に好ましくはａ／ｄ＝
０．９〜０．５に形成されるのが望ましい。ａ／ｄが
０．９より大きくなるに従い下段攪拌翼４からの吐出流
の上昇力の低下の傾向が顕著になりだし、また、ａ／ｄ
が０．５より小さくなるにつれ下段攪拌翼４への液の伝
達能力が低下し、完全混合に時間を要す傾向が顕在化し
てくるのでいずれも好ましくない。上段攪拌翼２の全長
（ｆ）と上段攪拌翼凹部３の深さ（ｊ）との比はｊ／ｆ
＝０．５〜０．１、好ましくはｊ／ｆ＝０．３〜０．
１、更に好ましくはｊ／ｆ＝０．２〜０．１に形成され
るのが望ましい。ｊ／ｆが０．２より大きくなるに従い
完全混合に時間を要す傾向が認められ、また、ｊ／ｆが
０．１よりも小さいと上段攪拌翼２の内側と外側の圧力
差が小さくなり、消費動力が増加する傾向が顕著化して
くるので好ましくない。下段攪拌翼４の全長（ｇ）と下
段攪拌翼凹部６の深さ（ｋ）との比はｋ／ｇ＝０．５〜
０．１、好ましくはｋ／ｇ＝０．４〜０．１、更に好ま
しくはｋ／ｇ＝０．３〜０．２に形成されるのが望まし
い。ｋ／ｇが０．３より大きくなるに従い完全混合に時
間を要す傾向が認められ、また、ｋ／ｇが０．２より小
さくなるに従い攪拌抵抗が増大し消費動力が増加する傾
向があるのでいずれも好ましくない。下段攪拌翼４の全
長（ｇ）と後退翼５，５′の垂直線上の長さ（ｈ）の比
はｈ／ｇ＝０．５〜０．１、好ましくはｈ／ｇ＝０．５
〜０．３に形成されるのが望ましい。ｈ／ｇが０．５よ
り大きくなると下段攪拌翼４の吐出量が減少していくの
で好ましくなく、ｈ／ｇが０．３より小さくなるにつ
れ、上下攪拌翼の液の伝達能力が低下するのでいずれも
好ましくない。後退翼５，５′の傾斜角αは５°＜α＜
７５°、好ましくは１０°＜α＜６０°、更に好ましく
は１５°＜α＜５０°に形成されるのが望ましい。αが
５０°より大きくなるにつれ消費動力は小さくなるもの
の吐出力が低下する傾向があり、αが１５°より小さく
なるにつれ消費動力が増大し吸い込み力も低下する傾向
があるので、いずれも好ましくない。上段攪拌翼凹部３
の深さＪと下段攪拌翼凹部６の深さｋの和と、前記各凹
部３，６の最深部間の距離ｌは、０．１≦ｌ／（ｊ＋
ｋ）＜２、好ましくは１≦ｌ／（ｊ＋ｋ）＜１．５に上
段攪拌翼２、下段攪拌翼４が攪拌軸１に装着されるのが
望ましい。各翼間での循環流が生成するのを防止するた
めである。尚、液体と液体の混合の場合は、ｌ／（ｊ＋
ｋ）＝１が望ましい。また、上段攪拌翼２と下段攪拌翼
４の翼間距離を０とすることにより攪拌翼による個々の
循環流の発生を防止し、槽全体の速やかな循環流を形成
することができる。Here, the opening width (b) of the recess 3 of the upper stirring blade is described.
And the maximum diameter (a) of the upper stirring blade 2 is b / a = 0.9.
０．１0.1, preferably b / a = 0.8-0.3, more preferably b / a = 0.8-0.5. As b / a becomes larger than 0.8, the tendency of obstructing the upward flow of the lower stirring blade 4 becomes remarkable.
As a becomes smaller than 0.5, weakening of the pressure difference between the inside and outside of the stirring blade becomes apparent, which is not preferable. The ratio between the maximum diameter (a) of the upper stirring blade 2 and the distance (c) between the intersection of the tangent of the upper end line and the tangent of the side end line of the upper stirring blade 2 is c / a = 0.95-0. 40, preferably c /
a = 0.9 to 0.45, more preferably c / a = 0.8
Preferably, it is formed to be ~ 0.45. c / a is 0.8
As the size increases, the tendency of the formation of a smooth circulating flow to become poor due to the influence of the discharge flow in the centrifugal direction becomes remarkable, and as c / a becomes smaller than 0.45, insufficient stirring of the upper liquid occurs. Either is not preferable because the tendency becomes obvious. The ratio of the maximum diameter (d) of the lower stirring blade 4 to the opening width (e) of the lower stirring blade recess 6 is e / d = 0.9 to 0.4,
Preferably, e / d = 0.85 to 0.5, and more preferably, e / d = 0.8 to 0.6. d
As / e becomes larger than 0.8, the tendency of obstructing the upward flow of the lower stirring blade 4 becomes remarkable, and e / d becomes 0.1.
As the pressure becomes smaller than 6, the pressure difference becomes weaker, the workability of the glass lining becomes difficult, and the tendency for the liquid to be transmitted from the upper stage impeller 2 becomes worse. The ratio of the maximum diameter (a) of the upper stirring blade 2 to the maximum diameter (d) of the lower stirring blade 4 is a / d = 0.95 to 0.3, preferably a / d = 0.9 to 0.4, More preferably, a / d =
Preferably, it is formed in the range of 0.9 to 0.5. As the value of a / d becomes larger than 0.9, the tendency of the rising force of the discharge flow from the lower stirring blade 4 to decrease becomes remarkable.
Is smaller than 0.5, the ability to transfer the liquid to the lower stage impeller 4 is reduced, and a tendency to require a longer time for complete mixing becomes apparent. The ratio of the total length (f) of the upper stirring blade 2 to the depth (j) of the upper stirring blade recess 3 is j / f.
= 0.5-0.1, preferably j / f = 0.3-0.0.
1, more preferably j / f = 0.2-0.1. As j / f is larger than 0.2, it takes a longer time for complete mixing. When j / f is smaller than 0.1, the pressure difference between the inside and outside of the upper stirring blade 2 becomes small. However, power consumption tends to increase, which is not preferable. The ratio of the total length (g) of the lower stirring blade 4 to the depth (k) of the lower stirring blade recess 6 is k / g = 0.5 to
0.1, preferably k / g = 0.4-0.1, more preferably k / g = 0.3-0.2. As k / g is greater than 0.3, it takes a longer time to complete mixing, and as k / g is less than 0.2, stirring resistance increases and power consumption tends to increase. Neither is preferred. The ratio of the total length (g) of the lower stirring blade 4 to the length (h) on the vertical line of the retreating blades 5, 5 'is h / g = 0.5 to 0.1, preferably h / g = 0.5.
Preferably, it is formed to a thickness of 0.3. When h / g is larger than 0.5, the discharge amount of the lower stirring blade 4 decreases, which is not preferable. As h / g becomes smaller than 0.3, the liquid transmission capacity of the upper and lower stirring blades decreases. Neither is preferred. The inclination angle α of the swept wings 5, 5 ′ is 5 ° <α <
It is desirable that the angle be 75 °, preferably 10 ° <α <60 °, and more preferably 15 ° <α <50 °. As α becomes larger than 50 °, the power consumption decreases, but the discharge power tends to decrease. As α becomes smaller than 15 °, the power consumption increases and the suction force also tends to decrease. Upper stage stirring blade recess 3
Is the sum of the depth J and the depth k of the lower stirring blade recess 6 and the distance l between the deepest portions of the recesses 3 and 6 is 0.1 ≦ l / (j +
k) <2, preferably 1 ≦ l / (j + k) <1.5, the upper stage impeller 2 and the lower stage impeller 4 are desirably mounted on the stirring shaft 1. This is to prevent generation of a circulating flow between the blades. In the case of mixing liquid and liquid, 1 / (j +
k) = 1 is desirable. Further, by setting the distance between the upper stage impeller 2 and the lower stage impeller 4 to 0, it is possible to prevent the generation of individual circulating flows by the stirring blades and to form a rapid circulating flow of the entire vessel.
【００１０】（実験例１）上記のように構成された本実
施例の攪拌翼について、以下その攪拌槽での攪拌翼の動
力性能を求めた。図４は本実施例の攪拌翼と比較例とし
て特開平５−４９８９０号公報に開示された攪拌翼を用
いて測定したＮｐ−Ｒｅ線図である。縦軸のＮｐは攪拌
槽の条件を一定にした場合における攪拌翼による液の動
力性能を表す指標の一つで動力数といわれ、Ｎｐ＝Ｐne
t ×１０3 ／ρ・ｎ3 ・ｄ5で表される。また横軸のＲ
ｅは槽条件を一定にした場合における攪拌翼による液の
乱れ状態を表す指標でＲｅ＝ｎ・ｄ2 ・ρ／μで表され
る。ここで、Ｐnet は正味攪拌所要動力（ＫＷ），ρは
液密度（kg／ｍ3 ），ｎは攪拌翼回転数（ｒｐｓ），ｄ
は翼径（ｍ），μは液粘度（kg-1sec -1）である。実験
条件は、攪拌槽内径（Ｄ）が１３０mmの攪拌槽（バッフ
ル無し）を用い、使用液粘度が１００ｃｐ〜１×１０5
ｃｐの溶液を用いて行った。実施例１は下段攪拌翼の翼
径が８４mm（０．６Ｄ）、上段攪拌翼のｃ／ａが０．
５、上段攪拌翼と下段攪拌翼のａ／ｄ＝０．７３で翼高
（ｈ）が１２０mm、翼間距離（Ｌ）が０mm、交差角度が
９０°の攪拌翼を用いた。比較例１は良好な動力特性及
び混合特性を与えるとされている翼条件、すなわち、下
段攪拌翼の翼径が８０mm（０．６Ｄ）、翼高（ｈ）が１
１８．５mm、翼間距離（Ｌ）が１８．４５mm、交差角度
が４５°で形成したものを用いた。この図４から明らか
ように、本実施例の攪拌装置ではＲｅ＝５００のとき動
力数はＮｐｘ＝１．３であるのに対し、比較例１の動力
数Ｎｐｙ＝０．９であり、動力値を求めると実施例１で
は０．１３ＫＷ、比較例１では０．１６ＫＷとなり、実
施例１は比較例１に対し約８０％しか消費せず動力効率
が著しく優れていることがわかった。(Experimental Example 1) With respect to the stirring blade of the present embodiment having the above-described configuration, the power performance of the stirring blade in the stirring tank was determined. FIG. 4 is an Np-Re diagram measured using the stirring blade of the present embodiment and a stirring blade disclosed as a comparative example in JP-A-5-49890. Np on the vertical axis is one of indexes indicating the power performance of the liquid by the stirring blade when the condition of the stirring tank is kept constant, and is called the power number, and Np = Pne
It is represented by t × 10 3 / ρ · n 3 · d 5 . Also, R on the horizontal axis
“e” is an index representing the state of turbulence of the liquid caused by the stirring blade when the tank conditions are kept constant, and is expressed by Re = n · d 2 · ρ / μ. Here, Pnet is the net required stirring power (KW), ρ is the liquid density (kg / m 3 ), n is the rotation speed of the stirring blade (rps), d
Is the blade diameter (m), and μ is the liquid viscosity (kg -1 sec -1 ). The experimental conditions were as follows: a stirring tank having an inner diameter (D) of 130 mm (no baffle) was used, and the viscosity of the used liquid was 100 cp to 1 × 10 5.
This was performed using a cp solution. In Example 1, the blade diameter of the lower stirring blade was 84 mm (0.6 D), and the c / a of the upper stirring blade was 0.1 mm.
5. A stirring blade having an a / d of 0.73 for the upper stirring blade and the lower stirring blade, a blade height (h) of 120 mm, a distance between blades (L) of 0 mm, and a crossing angle of 90 ° was used. In Comparative Example 1, the blade conditions are considered to provide good power characteristics and mixing characteristics, that is, the blade diameter of the lower stirring blade is 80 mm (0.6D), and the blade height (h) is 1
18.5 mm, a blade-to-blade distance (L) of 18.45 mm, and an intersection angle of 45 ° were used. As is apparent from FIG. 4, in the stirring apparatus of the present embodiment, the power number is Npx = 1.3 when Re = 500, whereas the power number Npy = 0.9 in Comparative Example 1, and the power value is Was found to be 0.13 KW in Example 1 and 0.16 KW in Comparative Example 1, indicating that Example 1 consumes only about 80% of Comparative Example 1 and has a remarkably excellent power efficiency.
【００１１】（実験例２）次に、実施例１の攪拌翼と、
従来例として従来例の中で混合特性が最も優れていると
される比較例１の攪拌翼を用い二液混合試験を行った。
図５は二液混合試験の評価方法を示す模式図であり、図
５（ａ）は混合前の状態図であり、図５（ｂ）は混合中
の状態図である。図中、１２は内径がＤ＝１３０mm、高
さＨ＝１４０mmの攪拌槽、１３は水飴に青絵の具で着色
し水で希釈した粘度がμ＝１×１０4 ｃｐ（２４℃），
比重がｓｇ＝１．４の水溶液１リットルからなる第１溶
液、１４は粘度がμ＝１０ｃｐ，比重がｓｇ＝０．８の
灯油１リットルからなる第２溶液、１５は青色の混合溶
液の混合高さを混合％と表示した混合率標線表示部であ
り、Ｍｏは混合前の第１溶液１３と第２溶液１４の界
面、Ｍｉは回転数ｎを変化させることにより液全体の青
色部の高さを表示する境界面である。実験方法は攪拌槽
１２に前述の実施例１と比較例１の攪拌翼（図示せず）
を各々装着した後、第１溶液１３を入れ、次いで第２溶
液１４を混合が生じないようにゆっくり攪拌槽１２に入
れて静置した後、各攪拌翼を起動させて回転数を上げ各
々所定の混合率に合わせ定常状態になったときの攪拌翼
の消費動力を測定した。その結果を（表１）に示した。(Experimental example 2) Next, the stirring blade of the embodiment 1
As a conventional example, a two-liquid mixing test was performed using the stirring blade of Comparative Example 1, which is considered to have the best mixing characteristics among the conventional examples.
FIG. 5 is a schematic diagram showing an evaluation method of the two-liquid mixing test, FIG. 5 (a) is a state diagram before mixing, and FIG. 5 (b) is a state diagram during mixing. In the figure, 12 is a stirring tank having an inner diameter of D = 130 mm and a height of H = 140 mm, and 13 is a syrup colored with blue paint and diluted with water to have a viscosity μ = 1 × 10 4 cp (24 ° C.),
A first solution consisting of 1 liter of an aqueous solution having a specific gravity of sg = 1.4, a second solution consisting of 1 liter of kerosene having a viscosity of μ = 10 cp and a specific gravity of sg = 0.8, and 15 being a mixture of a blue mixed solution This is a mixing ratio mark display portion in which the height is indicated as mixing%, Mo is the interface between the first solution 13 and the second solution 14 before mixing, and Mi is the blue portion of the entire liquid by changing the rotation speed n. This is the boundary surface that displays the height. The experimental method was such that the stirring blades (not shown) of Example 1 and Comparative Example 1 were placed in the stirring tank 12.
, Each is charged with the first solution 13, and then the second solution 14 is slowly placed in the stirring tank 12 so that mixing does not occur. The power consumption of the stirring blade at the time of the steady state was measured in accordance with the mixing ratio of. The results are shown in (Table 1).
【表１】 この（表１）から明らかように、本実施例１によれば比
較例１に対し、動力の消費が６７〜９０％で特に１００
％混合では比較例に対し６７％の低速回転で完全混合で
きるとともに省エネルギー効果も優れていることがわか
った。また、完全混合までの所要時間は比較例１に対し
７％しか要さないことがわかった。このことから本実施
例１の攪拌翼は極めて混合特性が優れていることがわか
った。[Table 1] As is clear from Table 1, according to the first embodiment, the power consumption is 67 to 90% and especially 100% compared to the comparative example 1.
It was found that in the case of% mixing, complete mixing was possible at a low speed of 67% as compared with the comparative example, and the energy saving effect was also excellent. It was also found that the time required for complete mixing required only 7% of Comparative Example 1. From this, it was found that the stirring blade of Example 1 had extremely excellent mixing characteristics.
【００１２】（実験例３）次に、スラリー浮上試験を行
った。図６はスラリー浮上試験の測定結果を示す図であ
る。縦軸はスラリーとして用いた硝子ビーズの浮上高さ
（％）、横軸は周速（ｍ／sec ）である。実験方法は、
粒径が０．１７７〜０．２５０mm，比重が２．２３から
なる硝子ビーズ１kgと水１．５５リットル（硝子ビーズ
は４０重量％）とを前記攪拌槽に入れ、次いで攪拌翼を
所定の回転数で攪拌し硝子ビーズが層となって浮上した
浮上高さ及びトルクを求めた。尚、浮上高さ１００％は
ガラスビーズの層が液面まで浮上したことを表す。攪拌
翼としては、前述の実施例１，比較例１と、比較例２と
して、最適の翼条件に加工した２段平パドル（翼幅８．
７mm，翼径７２mm，翼中心間距離７０mm）を用いた。そ
の結果を図６、（表２）に示した。(Experimental Example 3) Next, a slurry floating test was performed. FIG. 6 is a diagram showing the measurement results of the slurry floating test. The vertical axis indicates the flying height (%) of the glass beads used as the slurry, and the horizontal axis indicates the peripheral speed (m / sec). The experimental method is
1 kg of glass beads having a particle size of 0.177 to 0.250 mm and a specific gravity of 2.23 and 1.55 liters of water (40% by weight of glass beads) are put into the stirring tank, and then the stirring blade is rotated at a predetermined speed. The mixture was stirred by number and the flying height and torque at which the glass beads floated as a layer were determined. The flying height of 100% indicates that the glass bead layer floated to the liquid surface. As the stirring blade, the above-mentioned Example 1, Comparative Example 1, and Comparative Example 2 were used as the two-stage flat paddle (blade width 8.
7 mm, wing diameter 72 mm, wing center distance 70 mm). The results are shown in FIG. 6 (Table 2).
【表２】 この図６、（表２）から明らかように、本実施例１の攪
拌翼は他の攪拌翼よりも低速回転でのガラスビーズの浮
上を可能としかつ低動力であるので省エネルギー効果が
優れていることがわかった。[Table 2] As is clear from FIG. 6 and (Table 2), the stirring blade of the first embodiment enables the floating of the glass beads at a low rotation speed and has lower power than the other stirring blades, so that the energy saving effect is excellent. I understand.
【００１３】（実験例４）次に結晶破砕試験を行い混合
特性を評価した。図７（ａ）は本発明の実施例１の攪拌
翼を用いた結晶破砕試験における結晶の粒度分布を表す
図であり、図７（ｂ）は比較例における結晶の粒度分布
を表す図である。試験方法は、前述の実施例１、比較例
１の攪拌翼を用い、前記攪拌槽に飽和状態の塩化ナトリ
ウム水溶液１．５リットルを入れ、該液中に粒径８００
μ〜６００μの塩化ナトリウム５００ｇを入れ一定回転
数で連続１５時間攪拌した後の粒径分布を測定した。こ
の図８から明らかなように、本実施例１によれば比較例
１の攪拌翼に比べほとんど粒子が破砕されずに回収され
たことにより、マイルドな攪拌が可能であることがわか
った。(Experimental Example 4) Next, a crystal crushing test was performed to evaluate the mixing characteristics. FIG. 7A is a diagram illustrating a crystal particle size distribution in a crystal crushing test using the stirring blade of Example 1 of the present invention, and FIG. 7B is a diagram illustrating a crystal particle size distribution in a comparative example. . The test method was as follows. Using the stirring blades of Example 1 and Comparative Example 1, 1.5 liter of a saturated sodium chloride aqueous solution was put into the stirring tank, and a particle diameter of 800 liter was added to the liquid.
500 g of sodium chloride of μ to 600 μ was added, and the mixture was stirred at a constant rotation speed for 15 hours continuously, and the particle size distribution was measured. As is clear from FIG. 8, according to the first embodiment, the particles were recovered without being crushed as compared with the stirring blade of Comparative Example 1, and it was found that mild stirring was possible.
【００１４】（実験例５）次に、吸込み試験を行い、そ
の混合特性を評価した。試験方法は２リットル攪拌槽
（槽径１３０mm，液深１４０mm）及び１００リットル攪
拌槽（槽径５００mm，液深４５０mm）を用い水道水に発
泡スチロール（２リットル槽：２〜３mmの粒状物；１０
０リットル槽：４０mm×２５mm×４mmの板状物）を各々
３ｇ，２０ｇずつ浮遊させ回転数の変化による吸込み状
態、バッフルの有無による変化を写真撮影で検討した。
尚、比較例５は各々低粘度域で攪拌効果の高い３枚後退
翼（比較例３）、２段ピッチパドル（比較例４）を最適
の翼条件に加工したものを用いた。その結果を（表
３），（表４）に示した。（表３）は２リットル攪拌槽
を用いた結果であり、（表４）は１００リットル攪拌槽
を用いた結果である。(Experimental Example 5) Next, a suction test was performed to evaluate the mixing characteristics. The test method was as follows: using a 2 liter stirring tank (tank diameter 130 mm, liquid depth 140 mm) and a 100 liter stirring tank (tank diameter 500 mm, liquid depth 450 mm) in tap water with polystyrene foam (2 liter tank: 2-3 mm granular material;
(0 liter tank: 40 mm × 25 mm × 4 mm plate-like material) were suspended in 3 g and 20 g, respectively, and the suction state due to the change in the rotation speed and the change due to the presence or absence of the baffle were examined by photography.
In Comparative Example 5, three retreating blades (Comparative Example 3) and a two-stage pitch paddle (Comparative Example 4) each having a high stirring effect in a low viscosity region were processed under optimum blade conditions. The results are shown in (Table 3) and (Table 4). (Table 3) shows the results using a 2-liter stirring tank, and (Table 4) shows the results using a 100-liter stirring tank.
【表３】 [Table 3]
【表４】 この（表３），（表４）から明らかなように、本実施例
によれば従来攪拌効果が高いとされた他の攪拌翼に比べ
て極めて低速回転で吸込みかつ均一分散させることがわ
かった。[Table 4] As is clear from Tables 3 and 4, according to the present embodiment, it was found that suction and uniform dispersion were performed at an extremely low rotation speed as compared with other stirring blades which were conventionally considered to have a high stirring effect. .
【発明の効果】以上のように本発明によれば、下段攪拌
翼からの上昇流が上段攪拌翼の吐出流による影響をほと
んど受けることなく液面付近まで速やかに上昇させるこ
とができ、液面付近の液を一気に槽底部まで運び槽内全
体を短時間で均一な混合を達成することが可能で、更
に、槽底部のデッドスペースをなくし槽全域にわたる循
環流を形成することができ、その結果、低速回転、低消
費動力で短時間に完全混合を行うことができるととも
に、更に形状がシンプルなのでグラスライニングにも容
易に対応できる低原価で量産性に優れた攪拌装置を実現
できるものである。As described above, according to the present invention, the rising flow from the lower stirring blade can be quickly raised to near the liquid surface almost without being affected by the discharge flow of the upper stirring blade. The liquid in the vicinity can be transported to the bottom of the tank at a stretch, and the entire inside of the tank can be uniformly mixed in a short time.Furthermore, the dead space at the bottom of the tank can be eliminated and a circulation flow can be formed over the entire area of the tank. It is possible to realize a low-cost, mass-productive stirrer that can perform complete mixing in a short time with low rotation speed and low power consumption, and can easily cope with glass lining because of its simple shape.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の一実施例における攪拌装置の上段，下
段攪拌翼を平面状に表した模式図FIG. 1 is a schematic diagram showing upper and lower stirring blades of an agitating device according to an embodiment of the present invention in a plan view.
【図２】本発明の一実施例における攪拌装置の攪拌翼の
要部斜視図FIG. 2 is a perspective view of a main part of a stirring blade of a stirring device according to an embodiment of the present invention.
【図３】本発明の一実施例における攪拌装置の要部断面
斜視図FIG. 3 is a perspective view showing a cross section of a main part of a stirring device according to an embodiment of the present invention.
【図４】本実施例の攪拌翼と比較例の攪拌翼のＮｐ−Ｒ
ｅ線図FIG. 4 shows the Np-R of the stirring blade of the present embodiment and the stirring blade of the comparative example.
e diagram
【図５】（ａ）二液混合試験の評価方法を示す模式図で
あり、混合前の状態図 （ｂ）二液混合試験の評価方法を示す模式図であり、混
合中の状態図5 (a) is a schematic diagram showing an evaluation method of a two-liquid mixing test, and is a state diagram before mixing; FIG. 5 (b) is a schematic diagram showing an evaluation method of a two-liquid mixing test, and is a state diagram during mixing.
【図６】スラリー浮上試験の測定結果を示す図FIG. 6 is a diagram showing measurement results of a slurry floating test.
【図７】（ａ）本実施例の攪拌翼を用いた結晶破砕試験
における結晶の粒度分布を表す図 （ｂ）比較例の攪拌翼を用いた結晶破砕試験における結
晶の粒度分布を表す図FIG. 7A is a diagram illustrating a crystal particle size distribution in a crystal crushing test using a stirring blade of the present example. FIG. 7B is a diagram illustrating a crystal particle size distribution in a crystal crushing test using a stirring blade of a comparative example.
１ 攪拌軸 ２ 上段攪拌翼 ３ 上段攪拌翼凹部 ４ 下段攪拌翼 ５，５′ 後退翼 ６ 下段攪拌翼凹部 ７ 後退翼切り込み部 ８ 攪拌槽 ９ ジャケット １０ バッフル １１ モータ １２ 攪拌槽 １３ 第１溶液 １４ 第２溶液 １５ 混合率標線表示部 ａ 上段攪拌翼の下部の最大径 ｂ 上段攪拌翼凹部の下面の開口幅 ｃ 上段攪拌翼の上端部線の接線と側端線の接線の交点
間の距離 ｄ 下段攪拌翼の最大径 ｅ 下段攪拌翼凹部の上面の開口幅 ｆ 上段攪拌翼の全長 ｇ 下段攪拌翼の全長 ｈ 後退翼の垂直線上の長さ ｉ ｇとｈの和 ｊ 上段攪拌翼凹部の深さ ｋ 下段攪拌翼凹部の深さ ｌ 上段攪拌翼の下面頂部と下段攪拌翼の上面頂部の交
差距離 α 攪拌軸の回転方向と逆方向に折曲げ形成された後退
翼の傾斜角度REFERENCE SIGNS LIST 1 stirring shaft 2 upper stirring blade 3 upper stirring blade recess 4 lower stirring blade 5, 5 ′ retreating blade 6 lower stirring blade recess 7 retreating blade notch 8 stirring tank 9 jacket 10 baffle 11 motor 12 stirring tank 13 first solution 14 first 2 Solution 15 Mixing ratio mark display area a Maximum diameter of lower part of upper stirring blade b Opening width of lower surface of upper stirring blade recess c Distance between intersection of tangent of upper end line of upper stirring blade and tangent of side end line d The maximum diameter of the lower stirring blade e The opening width of the upper surface of the lower stirring blade recess f The total length of the upper stirring blade g The total length of the lower stirring blade h The vertical length of the retreating blade i The sum of ig and h j The depth of the upper stirring blade recess K Depth of the lower part of the lower stirring blade l Intersection distance between the top of the lower surface of the upper stirring blade and the top of the upper surface of the lower stirring blade α Angle of inclination of the swept blade bent in the direction opposite to the rotation direction of the stirring shaft
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B01F 7/00 - 7/32──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) B01F 7/00-7/32
Claims (7)
中心部に槽外から回転自在に垂設された攪拌軸と、前記
攪拌軸に装着された１乃至複数の略台形状に形成されか
つ下部中央部に凹部を備えた上段攪拌翼と、前記上段攪
拌翼と直交状に交差して装着された略長方形状に形成さ
れかつ上部中央部に凹部を備えた下段攪拌翼と、前記下
段攪拌翼に一体に又は別個に連設され回転方向に対し逆
向きに傾斜して装着されかつ前記攪拌軸を中心として対
称位置に切り込み部が形成された後退翼と、を備えたこ
とを特徴とする攪拌装置。1. A vertical cylindrical stirring tank, a stirring shaft rotatably provided at the center of the stirring tank from outside the tank, and one or more substantially trapezoidal shapes mounted on the stirring shaft. An upper-stage agitating blade formed with a concave portion in the lower central portion, and a lower-stage agitating blade formed in a substantially rectangular shape and mounted with a cross at right angles to the upper-stage agitating blade and having a concave portion in the upper central portion. A retreating blade integrally or separately connected to the lower-stage stirring blade, mounted to be inclined in a direction opposite to the rotation direction, and formed with a cut portion at a symmetric position about the stirring shaft. A stirring device.
段攪拌翼の最大径（ｄ）の比が０．１＜ａ／ｄ≦１であ
ることを特徴とする請求項１に記載の攪拌装置。2. The ratio of the maximum diameter (a) of the upper stirring blade to the maximum diameter (d) of the lower stirring blade is 0.1 <a / d ≦ 1. Stirrer.
線の接線と側端線の接線の交点間の距離（ｃ）との比が
０．０５＜ｃ／ａ＜１であることを特徴とする請求項１
又は２の内いずれか１に記載の攪拌装置。3. The ratio of the maximum diameter (a) of the upper stirring blade to the distance (c) between the intersections of the tangents of the upper end line and the side end line is 0.05 <c / a <1. 2. The method according to claim 1, wherein
Or the stirrer according to any one of 2.
段攪拌翼の前記凹部の開口幅（ｂ）との比が０．１≦ｂ
／ａ＜１であり、及び／又は前記下段攪拌翼の最大径
（ｄ）と前記下段攪拌翼の凹部の開口幅（ｅ）との比が
０．１≦ｅ／ｄ＜１であることを特徴とする請求項１乃
至３の内いずれか１に記載の攪拌装置。4. The ratio of the maximum diameter (a) of the upper stirring blade to the opening width (b) of the recess of the upper stirring blade is 0.1 ≦ b.
/ A <1 and / or the ratio of the maximum diameter (d) of the lower stirring blade to the opening width (e) of the recess of the lower stirring blade is 0.1 ≦ e / d <1. The stirrer according to any one of claims 1 to 3, wherein
と前記下段攪拌翼の前記凹部の深さ（ｋ）の和と、前記
各凹部の最深部間の距離ｌとの比が０．１＜ｌ／（ｊ＋
ｋ）＜２であることを特徴とする請求項１乃至４の内い
ずれか１に記載の攪拌装置。5. A depth (j) of the concave portion of the upper stirring blade.
And the ratio of the sum l of the depth (k) of the concave portion of the lower stirring blade to the distance l between the deepest portions of the concave portions is 0.1 <l / (j +
5. The stirring device according to claim 1, wherein k) <2.
°であることを特徴とする請求項１乃至５の内いずれか
１に記載の攪拌装置。6. The swept wing has an inclination angle α of 5 ° <α <75.
The stirrer according to any one of claims 1 to 5, wherein the angle is °.
拌翼装着部と前記上段攪拌翼、前記下段攪拌翼及び前記
後退翼の外周に積層されたグラスライニング層を備えた
ことを特徴とする請求項１乃至６の内いずれか１に記載
の攪拌装置。7. A stirrer according to claim 7, further comprising a stirrer blade mounting portion at an upper stage and a lower stage of said stirrer shaft, and a glass lining layer laminated on outer peripheries of said upper stage stirrer, said lower stage stirrer and said retreating blade. Item 7. The stirring device according to any one of Items 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30094493A JP2766847B2 (en) | 1993-11-05 | 1993-11-05 | Stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30094493A JP2766847B2 (en) | 1993-11-05 | 1993-11-05 | Stirrer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07124456A JPH07124456A (en) | 1995-05-16 |
| JP2766847B2 true JP2766847B2 (en) | 1998-06-18 |
Family
ID=17890981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30094493A Expired - Lifetime JP2766847B2 (en) | 1993-11-05 | 1993-11-05 | Stirrer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2766847B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962041A (en) * | 2014-04-09 | 2014-08-06 | 江苏省溧阳市云龙设备制造有限公司 | Plate-type stirring blade and glass lining stirrer |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3330523B2 (en) * | 1997-09-11 | 2002-09-30 | 神鋼パンテツク株式会社 | Stirred tank for storing yeast liquid and method for producing fermented foods such as beer using the stirred tank |
| JP3632827B2 (en) | 1998-11-11 | 2005-03-23 | リンテック株式会社 | Stirrer |
| JP4628232B2 (en) * | 2005-09-28 | 2011-02-09 | 佐竹化学機械工業株式会社 | Slurry impeller |
| JP5169290B2 (en) * | 2007-02-20 | 2013-03-27 | 株式会社カネカ | Method for producing polymer powder |
| JP2009018274A (en) * | 2007-07-13 | 2009-01-29 | Tlv Co Ltd | Heating/cooling apparatus |
| JP5947654B2 (en) * | 2011-09-30 | 2016-07-06 | 株式会社神鋼環境ソリューション | Stirrer |
| KR101277652B1 (en) * | 2012-02-29 | 2013-06-21 | 현대제철 주식회사 | Impeller |
| CN103084094B (en) * | 2013-02-22 | 2014-06-25 | 张创 | Special high-efficiency double-layer variable-angle stirrer for producing glue water |
| US9248420B2 (en) * | 2013-12-16 | 2016-02-02 | Pall Corporation | High turndown impeller |
| CN105642166B (en) * | 2016-03-21 | 2018-03-02 | 平顶山市国邦新材料有限公司 | A kind of liftable stirring-type silicon carbide slurry homogenizing tank |
| KR102299129B1 (en) * | 2021-03-11 | 2021-09-13 | 주식회사 아리푸드 | food stirring device |
-
1993
- 1993-11-05 JP JP30094493A patent/JP2766847B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962041A (en) * | 2014-04-09 | 2014-08-06 | 江苏省溧阳市云龙设备制造有限公司 | Plate-type stirring blade and glass lining stirrer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07124456A (en) | 1995-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2766847B2 (en) | Stirrer | |
| JP2516730B2 (en) | Stirrer | |
| EP0470493B1 (en) | Mixing apparatus | |
| EP0347618B1 (en) | Mixing apparatus | |
| WO2017185431A1 (en) | Gas-liquid dispersion mixing device equipped with annular sector-shaped concave surface impeller blade | |
| Dohi et al. | Power consumption and solid suspension performance of large-scale impellers in gas–liquid–solid three-phase stirred tank reactors | |
| JPH0549890A (en) | Agitator | |
| US6331071B2 (en) | Stirring device | |
| CN1113685C (en) | Vertical agitating apparatus | |
| CN108339445B (en) | Combined paddle stirring device | |
| CN2483079Y (en) | Liquid/gas or liquid/gas/solid phase agitating reactor having combined agitating blade | |
| CN113557079B (en) | Stirring vane assembly and stirring tank | |
| JP3224498B2 (en) | Stirrer | |
| JPH1024230A (en) | Agitator | |
| JPH0248027A (en) | Agitating pot with radially fed agtator and at least one buffer and method for mixing liquid by using agtating pot | |
| JP2704488B2 (en) | Stirring method | |
| KR100534290B1 (en) | Method and apparatus for mixing | |
| JPH08281089A (en) | Vertical type stirring machine | |
| CN101549261A (en) | Improved-blade type disc turbine stirring device | |
| KR20190025590A (en) | Containers for particle generation AND Particle generation method Using them | |
| JPH04215829A (en) | Stirring apparatus | |
| CN211329340U (en) | Inner coil pipe reaction kettle | |
| JP4635149B2 (en) | Stirrer | |
| JP4220168B2 (en) | Stirring apparatus and stirring method for liquid containing solid particles | |
| JPH0824609A (en) | Stirring apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980127 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080410 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090410 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100410 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100410 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110410 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110410 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120410 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130410 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140410 Year of fee payment: 16 |
|
| EXPY | Cancellation because of completion of term |