JP2010042377A - Stirring apparatus - Google Patents

Stirring apparatus Download PDF

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JP2010042377A
JP2010042377A JP2008209625A JP2008209625A JP2010042377A JP 2010042377 A JP2010042377 A JP 2010042377A JP 2008209625 A JP2008209625 A JP 2008209625A JP 2008209625 A JP2008209625 A JP 2008209625A JP 2010042377 A JP2010042377 A JP 2010042377A
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solution
blade member
stirring
flat plate
plate blade
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JP5134468B2 (en
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Tetsuya Takagi
徹也 高木
Shinsuke Sugiura
紳介 杉浦
Koji Toyooka
孝司 豊岡
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Nitto Denko Corp
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Nitto Denko Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a stirring apparatus in which a circulating flow circulates without being segmentalized in a vertical direction of a stirring tank while using a paddle blade having a simple shape to carry out efficiently a vertical circulation mixing of a solution. <P>SOLUTION: Stirring blades 5 attached to a rotary shaft 4 include a first flat-plate blade 7 formed in a tapered form so as to narrow in width from an outer end 7A toward the rotary shaft 4, and at the same time attached to the rotary shaft 4 at an inclined angle raising the solution 2 to the rotating direction of the rotary shaft 4, and a second flat-plate blade 8 formed in a tapered form so as to narrow in width from the outer end 8A toward the rotary shaft 4 at the upper position of the first flat-plate blade 7, at the same time attached to the rotary shaft 4 at an inclined angle raising the solution 2 to the rotating direction of the rotary shaft 4, and formed more shortly than the blade diameter of the first flat-plate blade 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は撹拌装置に関し、特に、循環流が撹拌槽の上下方向において分断されることなく効率良く溶液の上下循環混合を行うことが可能な撹拌装置に関するものである。   The present invention relates to an agitation device, and more particularly to an agitation device capable of efficiently performing up-and-down circulation mixing of a solution without dividing a circulating flow in the vertical direction of an agitation tank.

従来より、撹拌槽内に投入される溶液の粘度に対応して、種々の撹拌翼を使用して溶液の撹拌を行う多くの撹拌装置が提案されている。
この種の撹拌装置では、パドル翼等の小型翼を多段で使用する場合が多く、この種の撹拌装置では、特許第３７０９４１４号公報に記載されているように、翼回転数を高くして翼から半径方向に吐出される溶液の流量を多くすることにより、溶液が槽壁に衝突して上方及び下方に回って再び翼に戻る循環流動を発生させて撹拌槽内における溶液の撹拌混合を行っている。
特許第３７０９４１４号公報（第２ページ、図１４） Conventionally, many stirring devices have been proposed that stir a solution using various stirring blades in accordance with the viscosity of the solution put into the stirring tank.
In this type of agitation device, small wings such as paddle blades are often used in multiple stages. In this type of agitation device, as described in Japanese Patent No. 3709414, the blade rotation speed is increased. By increasing the flow rate of the solution discharged radially from the tank, the solution collides with the tank wall, generates a circulating flow that returns upward and downward, and returns to the blades, thereby stirring and mixing the solution in the stirring tank ing.
Japanese Patent No. 3709414 (second page, FIG. 14)

しかしながら、前記した撹拌装置にて使用される小型翼がパドル翼である場合には、パドル翼の上部から吐出される溶液と下部から吐出される溶液とが互いに衝突しあい、この結果、上下に仕切られた領域が発生してしまうことから、撹拌槽全体に渡って大きな循環流動を発生させることは困難となり、溶液の撹拌混合上問題がある。
尚、小型翼としては、バトル翼の他に、タービン翼やリボン翼が存在するが、いずれもその複雑な形状・構造に起因して、吐出力が不足したり、洗浄が困難である等の問題がある。 However, when the small blade used in the agitator is a paddle blade, the solution discharged from the upper part of the paddle blade and the solution discharged from the lower part collide with each other, and as a result, the upper and lower partitions Therefore, it becomes difficult to generate a large circulation flow over the entire stirring tank, which causes a problem in stirring and mixing the solution.
In addition to the battle blades, there are turbine blades and ribbon blades as small blades, all of which are due to their complicated shape and structure, and the discharge force is insufficient or cleaning is difficult. There's a problem.

本発明は前記従来の問題点を解消するためになされたものであり、単純な形状を有するパドル翼を使用しつつ循環流が撹拌槽の上下方向において分断されることなく循環して効率良く溶液の上下循環混合を行うことが可能な撹拌装置を提供することを目的とする。   The present invention has been made in order to solve the above-mentioned conventional problems, and uses a paddle blade having a simple shape and circulates the circulating flow without being divided in the vertical direction of the stirring tank to efficiently circulate the solution. An object of the present invention is to provide a stirrer capable of performing up-and-down circulation mixing.

前記目的を達成するため請求項１に係る撹拌装置は、溶液が投入される撹拌槽と、前記撹拌槽の中心部に配設された回転軸と、前記回転軸に取り付けられた撹拌翼とを備えた撹拌装置において、前記撹拌翼は、少なくとも、外端部から前記回転軸に向かって幅狭となるようにテーパ状に形成されるとともに回転軸の回転に基づき溶液を上昇させる傾斜角度で回転軸に取り付けられた第１平板翼部材と、前記第１平板翼部材の上方位置で、外端部から前記回転軸に向かって幅狭となるようにテーパ状に形成されるとともに回転軸の回転に基づき溶液を上昇させる傾斜角度で回転軸に取り付けられ、第１平板翼部材の翼径よりも短く形成された第２平板翼部材とを備えたことを特徴とする。   In order to achieve the above object, a stirrer according to claim 1 includes a stirring tank into which a solution is charged, a rotating shaft disposed in a central portion of the stirring tank, and a stirring blade attached to the rotating shaft. In the stirring device provided, at least the stirring blade is tapered so as to become narrower from the outer end toward the rotating shaft, and rotates at an inclination angle that raises the solution based on the rotation of the rotating shaft. A first flat plate blade member attached to the shaft, and a taper formed so as to become narrower from the outer end toward the rotary shaft at a position above the first flat plate blade member, and rotation of the rotary shaft And a second flat plate blade member that is attached to the rotary shaft at an inclination angle that raises the solution and is shorter than the blade diameter of the first flat plate blade member.

また、請求項２に係る撹拌装置は、請求項１の撹拌装置において、前記回転軸の下部に設けられた平板状のボトム翼部材を備えたことを特徴とする。   According to a second aspect of the present invention, there is provided the stirring device according to the first aspect, further comprising a flat bottom blade member provided at a lower portion of the rotating shaft.

前記した請求項１に係る撹拌装置では、回転軸に取り付けられた撹拌翼は、少なくとも、外端部から回転軸に向かって幅狭となるようにテーパ状に形成されるとともに回転軸の回転方向に対して溶液を上昇させる傾斜角度で回転軸に取り付けられた第１平板翼部材、及び、第１平板翼部材の上方位置で、外端部から前記回転軸に向かって幅狭となるようにテーパ状に形成されるとともに回転軸の回転方向に対して溶液を上昇させる傾斜角度で回転軸に取り付けられ、第１平板翼部材の翼径よりも短く形成された第２平板翼部材とを備えているので、先ず、第２平板翼部材を介して撹拌槽の槽壁から回転軸に沿って撹拌槽の中心に向かう溶液の流れが形成され、次いで、かかる溶液の流れが第１平板翼部材を介して回転軸に沿って撹拌槽の下部まで停滞することなく伝達される。これにより、溶液の循環流が撹拌槽の上下方向において分断されることなく循環して効率良く溶液の上下循環混合を行うことが可能となる。   In the stirring device according to claim 1, the stirring blade attached to the rotating shaft is formed in a tapered shape so as to become narrower from the outer end portion toward the rotating shaft, and the rotation direction of the rotating shaft. The first flat plate blade member attached to the rotary shaft at an inclination angle that raises the solution with respect to the first flat plate blade member, and at a position above the first flat plate blade member, so as to become narrower from the outer end toward the rotary shaft. A second flat plate blade member formed in a taper shape and attached to the rotation shaft at an inclination angle that raises the solution with respect to the rotation direction of the rotation shaft, and formed shorter than the blade diameter of the first flat plate blade member. Therefore, first, a flow of the solution is formed from the tank wall of the stirring tank to the center of the stirring tank along the rotation axis via the second flat plate blade member, and then the flow of the solution is the first flat plate blade member. The bottom of the stirring tank along the axis of rotation through In it transmitted without stagnation. Thereby, the circulating flow of the solution can be circulated without being divided in the vertical direction of the stirring tank, so that the solution can be efficiently circulated and mixed up and down.

また、請求項２及び請求項３に係る撹拌装置では、回転軸の下部に設けられた平板状のボトム翼部材を備えているので、撹拌槽の下部まで循環されてきた溶液の流れは、撹拌槽の槽壁に沿って上側に上昇されていく。これにより、第１平板翼部材、第２平板翼部材及びボトム翼部材により、溶液を撹拌槽内で上下循環して効率良く混合することが可能となる。   Moreover, in the stirring apparatus according to claim 2 and claim 3, since the flat bottom blade member provided at the lower part of the rotating shaft is provided, the flow of the solution circulated to the lower part of the stirring tank is stirred. Ascending along the tank wall of the tank. As a result, the first flat plate blade member, the second flat plate blade member, and the bottom blade member can efficiently circulate the solution in the stirring tank and mix them efficiently.

以下、本発明に係る撹拌装置について、本発明を具体化した実施形態に基づき図面を参照しつつ詳細に説明する。
先ず、図１に基づき本実施形態に係る撹拌装置の構成について説明する。図１は撹拌装置を模式的に示す説明図である。
図１において、撹拌装置１は、各種の溶液２が投入される撹拌槽３が備えられている。撹拌槽３に投入される溶液２としては、例えば、ポリマー溶液に各種添加剤を添加して粘着剤を生成する溶液が使用される。 DESCRIPTION OF EMBODIMENTS Hereinafter, a stirrer according to the present invention will be described in detail with reference to the drawings based on embodiments embodying the present invention.
First, based on FIG. 1, the structure of the stirring apparatus which concerns on this embodiment is demonstrated. FIG. 1 is an explanatory view schematically showing a stirring device.
In FIG. 1, the stirring device 1 includes a stirring tank 3 into which various solutions 2 are charged. As the solution 2 put into the stirring tank 3, for example, a solution in which various additives are added to the polymer solution to generate an adhesive is used.

撹拌槽３の中心部には、回転軸４が配設されている。回転軸４には、図示しないモータが連結されており、回転軸４はモータを介して回転される。
回転軸４には、３つの翼部材から構成される撹拌翼５が取り付けられている。撹拌翼５は、ボトム翼部材６、第１平板翼部材７及び第２平板翼部材８から構成されている。 A rotating shaft 4 is disposed at the center of the stirring tank 3. A motor (not shown) is connected to the rotating shaft 4, and the rotating shaft 4 is rotated via the motor.
A stirring blade 5 composed of three blade members is attached to the rotating shaft 4. The stirring blade 5 includes a bottom blade member 6, a first flat blade member 7, and a second flat blade member 8.

具体的に、回転軸４の下部には、撹拌槽３の底部の湾曲面に対応する湾曲形状に形成されたボトム翼部材６が固設されている。かかるボトム翼部材６の上部には、補助翼９が設けられている。   Specifically, a bottom blade member 6 formed in a curved shape corresponding to the curved surface of the bottom of the stirring tank 3 is fixed to the lower portion of the rotating shaft 4. An auxiliary wing 9 is provided on the top of the bottom wing member 6.

また、回転軸４の上下方向における略中央位置には、第１平板翼部材７が取り付けられている。第１平板翼部材７は、図１に示すように、撹拌槽３の槽壁３Ａに近接する外端部７Ａから回転軸４に向かって幅狭となるようにテーパ状に形成されている。
また、第１平板翼部材７は、図２に示すように、回転軸４の回転に基づき、溶液２を上昇させる傾斜角度で回転軸４に取り付けられている。ここに、回転軸４に対する第１平板翼部材７の傾斜角度は、図２に示すように、回転軸４の回転方向Ａに対して、垂直状態から若干上向きとなるように決定されている。 A first flat plate blade member 7 is attached to a substantially central position in the vertical direction of the rotating shaft 4. As shown in FIG. 1, the first flat plate blade member 7 is formed in a tapered shape so as to become narrower toward the rotation shaft 4 from the outer end portion 7 </ b> A adjacent to the tank wall 3 </ b> A of the stirring tank 3.
As shown in FIG. 2, the first flat plate blade member 7 is attached to the rotary shaft 4 at an inclination angle that raises the solution 2 based on the rotation of the rotary shaft 4. Here, as shown in FIG. 2, the inclination angle of the first flat plate blade member 7 with respect to the rotation shaft 4 is determined to be slightly upward from the vertical state with respect to the rotation direction A of the rotation shaft 4.

更に、第１平板翼部材７の上方位置で、回転軸４には、第２平板翼部材８が取り付けられている。第２平板翼部材８は、第１平板翼部材７と同様、図１に示すように、外端部８Ａから回転軸４に向かって幅狭となるようにテーパ状に形成されており、また、図２に示すように、回転軸４の回転に基づき、溶液２を上昇させる傾斜角度で回転軸４に取り付けられている。ここに、回転軸４に対する第２平板翼部材８の傾斜角度は、第１平板翼部材７と同様、図２に示すように、回転軸４の回転方向Ａに対して、垂直状態から若干上向きとなるように決定されている。
ここに、第２平板翼部材８の翼径は、第１平板翼部材７の翼径よりも短く形成されている。 Further, a second flat plate blade member 8 is attached to the rotary shaft 4 at a position above the first flat plate blade member 7. Like the first flat plate blade member 7, the second flat plate blade member 8 is formed in a tapered shape so as to become narrower from the outer end portion 8A toward the rotary shaft 4, as shown in FIG. As shown in FIG. 2, the rotary shaft 4 is attached to the rotary shaft 4 at an inclination angle that raises the solution 2 based on the rotation of the rotary shaft 4. Here, the inclination angle of the second flat plate blade member 8 with respect to the rotating shaft 4 is slightly upward from the vertical state with respect to the rotation direction A of the rotating shaft 4 as shown in FIG. It is decided to become.
Here, the blade diameter of the second flat plate blade member 8 is formed shorter than the blade diameter of the first flat plate blade member 7.

続いて、前記のように構成された撹拌装置１に設けられた撹拌翼５を使用して撹拌槽３内に投入された溶液の撹拌を行う場合に、撹拌翼５による撹拌性能を検証すべく、図１に示す本実施形態の撹拌装置１と同様の構成を有する解析モデルに基づき、撹拌槽３内における溶液の数値流動シミュレーション解析を行った。
このとき、数値流動シミュレーションは、次の条件下で行った。
解析ソフトプログラム：ＦＬＵＥＮＴ６．２（ＡＮＳＹＳ．ＩＮＣ社製造）
回転軸の回転数：７０ｒｐｍ
溶液の粘度：１Ｐａ・ｓ
溶液密度：１ｇ／ｃｍ3 Then, when stirring the solution thrown in the stirring tank 3 using the stirring blade 5 provided in the stirring apparatus 1 comprised as mentioned above, in order to verify the stirring performance by the stirring blade 5 Based on an analysis model having the same configuration as that of the stirring device 1 of this embodiment shown in FIG. 1, numerical flow simulation analysis of the solution in the stirring tank 3 was performed.
At this time, the numerical flow simulation was performed under the following conditions.
Analysis software program: FLUENT 6.2 (manufactured by ANSYS. INC)
Number of rotations of rotating shaft: 70rpm
Solution viscosity: 1 Pa · s
Solution density: 1 g / cm 3

前記した条件下で数値流動シミュレーションを行ったところ、図３に示すシミュレーション結果が得られた。
ここに、図３は回転軸方向に平行で回転軸を含む断面における速度ベクトルを示す説明図である。 When the numerical flow simulation was performed under the above-described conditions, the simulation result shown in FIG. 3 was obtained.
FIG. 3 is an explanatory diagram showing velocity vectors in a cross section including the rotation axis and parallel to the rotation axis direction.

図３から明かなように、先ず、第２平板翼部材８を介して撹拌槽３の槽壁３Ａから回転軸４に沿って撹拌槽３の中心に向かう溶液２の流れが形成され、次いで、かかる溶液２の流れが第１平板翼部材７を介して回転軸４に沿って撹拌槽３の下部まで停滞することなく伝達されることが分かる。これにより、溶液２の循環流が撹拌槽３の上下方向において分断されることなく循環して効率良く溶液の上下循環混合を行うことが可能となるものである。   As apparent from FIG. 3, first, the flow of the solution 2 from the tank wall 3 </ b> A of the stirring tank 3 toward the center of the stirring tank 3 is formed along the rotation axis 4 via the second flat plate blade member 8, and then It can be seen that the flow of the solution 2 is transmitted along the rotating shaft 4 to the lower part of the stirring tank 3 through the first flat plate blade member 7 without stagnation. Accordingly, the circulating flow of the solution 2 can be circulated without being divided in the vertical direction of the stirring tank 3 so that the vertical circulation mixing of the solution can be performed efficiently.

また、回転軸４の下部に設けられた平板状のボトム翼部材６を介して、撹拌槽３の下部まで循環されてきた溶液２の流れは、撹拌槽３の槽壁３Ａに沿って上側に上昇されていくことが分かる。これにより、第１平板翼部材７、第２平板翼部材８及びボトム翼部材６により、溶液２を撹拌槽３内で上下循環して効率良く混合することが可能となる。   Further, the flow of the solution 2 circulated to the lower part of the stirring tank 3 through the flat bottom blade member 6 provided at the lower part of the rotating shaft 4 flows upward along the tank wall 3A of the stirring tank 3. You can see that it rises. Thus, the first flat plate blade member 7, the second flat plate blade member 8, and the bottom blade member 6 can efficiently circulate the solution 2 in the stirring tank 3 and mix it efficiently.

前記にて説明したように、本実施形態に係る撹拌装置１では、回転軸４に取り付けられた撹拌翼５は、外端部７Ａから回転軸４に向かって幅狭となるようにテーパ状に形成されるとともに回転軸４の回転方向に対して溶液２を上昇させる傾斜角度で回転軸４に取り付けられた第１平板翼部材７、及び、第１平板翼部材７の上方位置で、外端部８Ａから回転軸４に向かって幅狭となるようにテーパ状に形成されるとともに回転軸４の回転方向に対して溶液２を上昇させる傾斜角度で回転軸４に取り付けられ、第１平板翼部材７の翼径よりも短く形成された第２平板翼部材８とを備えているので、先ず、第２平板翼部材８を介して撹拌槽３の槽壁３Ａから回転軸４に沿って撹拌槽３の中心に向かう溶液２の流れが形成され、次いで、かかる溶液２の流れが第１平板翼部材７を介して回転軸４に沿って撹拌槽３の下部まで停滞することなく伝達される。これにより、溶液２の循環流が撹拌槽３の上下方向において分断されることなく循環して効率良く溶液の上下循環混合を行うことが可能となる。   As described above, in the stirring device 1 according to this embodiment, the stirring blade 5 attached to the rotating shaft 4 is tapered so as to become narrower from the outer end portion 7A toward the rotating shaft 4. A first flat plate blade member 7 formed and attached to the rotary shaft 4 at an inclination angle that raises the solution 2 with respect to the rotation direction of the rotary shaft 4, and an outer end at a position above the first flat plate blade member 7. The first flat plate blade is formed in a tapered shape so as to become narrower from the portion 8A toward the rotating shaft 4 and attached to the rotating shaft 4 at an inclination angle that raises the solution 2 with respect to the rotating direction of the rotating shaft 4. Since the second flat plate blade member 8 formed shorter than the blade diameter of the member 7 is provided, first, stirring is performed along the rotation axis 4 from the tank wall 3A of the stirring tank 3 via the second flat plate blade member 8. A flow of solution 2 toward the center of tank 3 is formed, and then such solution 2 Stream is transmitted without stagnation to the bottom of the stirred tank 3 along the rotary shaft 4 through the first flat plate wing member 7. Thus, the circulating flow of the solution 2 is circulated without being divided in the vertical direction of the stirring tank 3, and it is possible to efficiently perform the vertical circulating mixing of the solution.

また、回転軸４の下部に設けられた平板状のボトム翼部材６を備えているので、撹拌槽３の下部まで循環されてきた溶液２の流れは、撹拌槽３の槽壁３Ａに沿って上側に上昇されていく。これにより、第１平板翼部材７、第２平板翼部材８及びボトム翼部材６により、溶液２を撹拌槽３内で上下循環して効率良く混合することが可能となる。
尚、本発明は前記実施形態に限定されるものではなく、本発明の要旨の範囲内で種々の改良、変形が可能であることは勿論である。
例えば、前記実施形態では、平板翼部材として第１平板翼部材７及び第２平板翼部材８の２枚の平板翼部材が回転軸４に取り付けられているが、この種の平板翼部材は、３枚、更にそれ以上取り付けられても良い。 Moreover, since the flat bottom blade member 6 provided at the lower part of the rotating shaft 4 is provided, the flow of the solution 2 circulated to the lower part of the stirring tank 3 is along the tank wall 3A of the stirring tank 3. It is raised to the upper side. Thus, the first flat plate blade member 7, the second flat plate blade member 8, and the bottom blade member 6 can efficiently circulate the solution 2 in the stirring tank 3 and mix it efficiently.
In addition, this invention is not limited to the said embodiment, Of course, various improvement and deformation | transformation are possible within the range of the summary of this invention.
For example, in the above-described embodiment, the two flat plate blade members of the first flat plate blade member 7 and the second flat plate blade member 8 are attached to the rotary shaft 4 as the flat plate blade member. Three or more may be attached.

撹拌装置を模式的に示す説明図である。It is explanatory drawing which shows a stirring apparatus typically. 撹拌翼を模式的に示す斜視図である。It is a perspective view which shows a stirring blade typically. 回転軸方向に平行で回転軸を含む断面における速度ベクトルを示す説明図である。It is explanatory drawing which shows the velocity vector in the cross section which is parallel to a rotating shaft direction and contains a rotating shaft.

符号の説明Explanation of symbols

１ 撹拌装置
２ 溶液
３ 撹拌槽
４ 回転軸
５ 撹拌翼
６ ボトム翼部材
７ 第１平板翼部材
８ 第２平板翼部材 DESCRIPTION OF SYMBOLS 1 Stirring apparatus 2 Solution 3 Stirrer tank 4 Rotating shaft 5 Stirring blade 6 Bottom blade member 7 First flat plate blade member 8 Second flat plate blade member

Claims (2)

溶液が投入される撹拌槽と、
前記撹拌槽の中心部に配設された回転軸と、
前記回転軸に取り付けられた撹拌翼とを備えた撹拌装置において、
前記撹拌翼は、少なくとも、
外端部から前記回転軸に向かって幅狭となるようにテーパ状に形成されるとともに回転軸の回転に基づき溶液を上昇させる傾斜角度で回転軸に取り付けられた第１平板翼部材と、
前記第１平板翼部材の上方位置で、外端部から前記回転軸に向かって幅狭となるようにテーパ状に形成されるとともに回転軸の回転に基づき溶液を上昇させる傾斜角度で回転軸に取り付けられ、第１平板翼部材の翼径よりも短く形成された第２平板翼部材とを備えたことを特徴とする撹拌装置。 A stirred tank into which the solution is charged;
A rotating shaft disposed in a central portion of the stirring tank;
In a stirring device comprising a stirring blade attached to the rotating shaft,
The stirring blade is at least
A first flat plate blade member formed in a tapered shape so as to become narrower from the outer end toward the rotation shaft and attached to the rotation shaft at an inclination angle that raises the solution based on the rotation of the rotation shaft;
At a position above the first flat plate blade member, a taper is formed so as to become narrower from the outer end toward the rotation axis, and the rotation axis is inclined at an inclination angle that raises the solution based on the rotation of the rotation axis. A stirrer comprising: a second flat plate blade member attached and formed shorter than the blade diameter of the first flat plate blade member. 前記回転軸の下部に設けられた平板状のボトム翼部材を備えたことを特徴とする請求項１に記載の撹拌装置。 The stirring device according to claim 1, further comprising a flat bottom blade member provided at a lower portion of the rotating shaft.
JP2008209625A 2008-08-18 2008-08-18 Stirrer Active JP5134468B2 (en)

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KR20180122659A (en) * 2016-08-10 2018-11-13 코니카 미놀타 가부시키가이샤 Method for producing optical film
CN109261012A (en) * 2018-10-17 2019-01-25 华南农业大学 Pesticide automatic blending device and control method
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Publication number Priority date Publication date Assignee Title
CN103585775A (en) * 2012-08-18 2014-02-19 成都措普科技有限公司 Novel scraping plate concentrating device
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