JP2005288246A - Agitation blade - Google Patents

Agitation blade Download PDF

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JP2005288246A
JP2005288246A JP2004104613A JP2004104613A JP2005288246A JP 2005288246 A JP2005288246 A JP 2005288246A JP 2004104613 A JP2004104613 A JP 2004104613A JP 2004104613 A JP2004104613 A JP 2004104613A JP 2005288246 A JP2005288246 A JP 2005288246A
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inclined surface
upward
downward
stirred
stirring
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Tomoyoshi Adachi
智好 安達
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an agitation blade by which the object to be agitated can be agitated efficiently even when the object to be agitated has high viscosity and the power to be imposed on a rotary shaft part in the axial direction of rotation is made small. <P>SOLUTION: This agitation blade 1 is constituted so that an upward slope 16A upward with respect to the upstream side of the rotational direction of the rotary shaft part and a downward slope 14A downward with respect to the upstream side of the rotational direction of the rotary shaft part are formed alternately on each of blades 3A, 3B, which are respectively extended outward from the outer periphery of the rotary shaft part 2 in the radial direction (shown by arrow E) of the rotary shaft part, in the radial direction. The area of the upward slope 16A, the angle of the upward slope 16A with respect to the rotational direction of the rotary shaft part, the area of the downward slope 14A and the angle of the downward slope 14A with respect to the rotational direction of the rotary shaft part are set so that the amount of the object which is to be agitated and is sent upward by the upward slopes 16A of the blades 3A, 3B is almost equal to that of the object which is to be agitated and is sent by the downward slopes 14A of the blades 3A, 3B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、例えば飲料水、練り食品原料、染料溶液、塗料、各種反応液といった被撹拌物の撹拌に使用される撹拌羽根に関するものである。   The present invention relates to a stirring blade used for stirring an object to be stirred such as drinking water, kneaded food material, dye solution, paint, and various reaction liquids.

従来、この種の撹拌羽根が、例えば下記の特許文献１に開示されている。下記文献開示の撹拌羽根はモータ駆動軸と連結される回転軸部を備え、この回転軸部の外周に３枚の翼が放射状に延設され、回転方向に対して傾斜した傾斜面が各翼に形成されたものである。各翼の傾斜面は全て同じ向きに傾斜している。かかる撹拌羽根は例えば手持ち式の撹拌機に取り付けて使用されることがある。   Conventionally, this kind of stirring blade is disclosed, for example, in Patent Document 1 below. The agitating blade disclosed in the following document includes a rotating shaft portion connected to a motor drive shaft, and three blades extend radially on the outer periphery of the rotating shaft portion, and an inclined surface inclined with respect to the rotation direction is provided for each blade. It is formed. The inclined surfaces of each wing are all inclined in the same direction. Such a stirring blade may be used by being attached to, for example, a hand-held stirrer.

特開２００３−２８４９３４号公報JP 2003-284934 A

上記従来の撹拌羽根は各翼の傾斜面が全て同じ向きに傾斜しているので、各翼による被撹拌物の送り方向は下向きまたは上向きのいずれか一方向であった。そのため、手持ち式撹拌機による送り力の反力が人力よりも大きい場合は、手で抑えきれずに翼が被撹拌物中で浮き上がったり、逆に沈み込むことがある。そのため、浮き上がった翼により被撹拌物が撹拌容器から飛び散って周囲を汚したり、沈み込んだ翼が撹拌容器の底部と接触して破損したりすることがあった。
他方、従来の撹拌羽根は一方向の送りであるために撹拌効率が悪く、特に高粘度の被撹拌物を撹拌する場合は未混合の塊状部分や継粉（ママコ）部分が撹拌容器内で舞い上がるだけで十分に混ざらないことがあった。また、撹拌羽根を高速回転させたとしても、よりいっそうの撹拌の高速化や高度化ができなかった。 In the conventional stirring blade, since the inclined surfaces of the blades are all inclined in the same direction, the feed direction of the object to be stirred by each blade is either one of the downward direction and the upward direction. Therefore, when the reaction force of the feed force by the hand-held stirrer is greater than human power, the wings may float in the object to be stirred without being able to be suppressed by hand, or may sink. For this reason, the object to be stirred may scatter from the stirring vessel due to the lifted blades, and the surroundings may become dirty, or the submerged blades may come into contact with the bottom of the stirring vessel and be damaged.
On the other hand, since the conventional stirring blades are fed in one direction, the stirring efficiency is poor. Especially when stirring a highly viscous object to be stirred, the unmixed lump or spatter (mamako) part soars in the stirring vessel. There were times when it was not mixed well. Further, even if the stirring blades were rotated at a high speed, further increase in the speed and advancement of stirring could not be achieved.

本発明は、上記した従来の問題点に鑑みてなされたものであって、高粘度の被撹拌物であっても効率よく撹拌することが可能で、回転軸部にかかる回転軸心方向の力が小さな撹拌羽根の提供を目的とするものである。   The present invention has been made in view of the above-described conventional problems, and can efficiently stir even a high-viscosity object to be stirred. Is intended to provide a small stirring blade.

上記目的を達成するために、本発明に係る撹拌羽根は、回転軸部の外周に軸部径方向外向きに延設された翼に、軸部回転方向上流側に向かって上向きの上向き傾斜面と、軸部回転方向上流側に向かって下向きの下向き傾斜面とを軸部径方向に交互に形成した構成にしてある。   In order to achieve the above-mentioned object, the stirring blade according to the present invention has an upward inclined surface that faces upward on the upstream side in the rotational direction of the shaft portion on a blade extending radially outward of the shaft portion on the outer periphery of the rotational shaft portion. And downward inclined surfaces that face downward toward the upstream side in the rotation direction of the shaft portion are formed alternately in the shaft portion radial direction.

また、前記した構成において、翼の上向き傾斜面により上方へ送られる被撹拌物の送り量と、翼の下向き傾斜面により下方へ送られる被撹拌物の送り量とが略同量となるように、上向き傾斜面の面積および軸部回転方向に対する傾斜角度と、下向き傾斜面の面積および軸部回転方向に対する傾斜角度とが設定されたものである。   Further, in the above-described configuration, the feed amount of the agitated object sent upward by the upward inclined surface of the blade is substantially equal to the feed amount of the agitated object sent downward by the downward inclined surface of the blade. The inclination angle with respect to the area of the upward inclined surface and the shaft portion rotation direction, and the area of the downward inclined surface and the inclination angle with respect to the shaft portion rotation direction are set.

そして、前記した構成において、翼の上向き傾斜面の面積および軸部回転方向に対する傾斜角度と、翼の下向き傾斜面の面積および軸部回転方向に対する傾斜角度とが、被撹拌物の粘度に応じて設定されたものである。   In the configuration described above, the area of the upward inclined surface of the blade and the inclination angle with respect to the rotation direction of the shaft portion, and the area of the downward inclination surface of the blade and the inclination angle with respect to the rotation direction of the shaft portion depend on the viscosity of the object to be stirred. It is set.

本発明に係る撹拌羽根によれば、回転軸部の回転により被撹拌物を上向き傾斜面で上方へ送り下向き傾斜面で下方へ送るので、上下２方向の送りにより被撹拌物を効率よく撹拌することができる。加えて、下向き傾斜面に生じる上向きの反力と上向き傾斜面に生じる下向きの反力は互いに相殺されるので、回転軸部にかかる回転軸心方向の力を小さくすることができ、手持ち式撹拌機などに好適に用いることができる。従って、撹拌の効率化を実現することができる。
そして、本発明の撹拌羽根による撹拌方式は単に重力を利用した自然反転撹拌でない。すなわち、本発明の撹拌羽根は、上向き傾斜面または下向き傾斜面の傾斜角度と被撹拌物の粘度とを適宜選定して、撹拌羽根回転方向に対する上下方向または左右方向への被撹拌物の送り量を決定することにより、撹拌容器の内側壁および被撹拌物中の摩擦力を強制的に増大化させることができる。これにより、強力な撹拌が実現できる。 According to the agitation blade according to the present invention, the material to be stirred is fed upward on the inclined surface by the rotation of the rotating shaft portion, and is sent downward on the downward inclined surface. Therefore, the material to be stirred is efficiently stirred by feeding in two vertical directions. be able to. In addition, since the upward reaction force generated on the downward inclined surface and the downward reaction force generated on the upward inclined surface cancel each other, the force in the direction of the rotation axis applied to the rotation shaft portion can be reduced, and hand-held agitation It can be suitably used for a machine. Therefore, the efficiency of stirring can be realized.
And the stirring method by the stirring blade of this invention is not the natural inversion stirring using only gravity. That is, the stirring blade of the present invention appropriately selects the inclination angle of the upward inclined surface or the downward inclined surface and the viscosity of the object to be stirred, and feeds the object to be stirred in the vertical direction or the horizontal direction with respect to the rotating direction of the stirring blade. By determining the above, it is possible to forcibly increase the frictional force in the inner wall of the stirring vessel and the object to be stirred. Thereby, powerful stirring can be realized.

また、上向き傾斜面による被撹拌物の送り量と下向き傾斜面による被撹拌物の送り量とが略同量となるように、上向き傾斜面および下向き傾斜面が形成されている場合は、この撹拌羽根を用いた撹拌容器内で被撹拌物を平定に保ちながら十分に撹拌することができる。また、回転軸部にかかる回転軸心方向の力をよりいっそう小さくすることができる。   Further, when the upward inclined surface and the downward inclined surface are formed so that the amount of the material to be stirred by the upward inclined surface and the amount of the material to be stirred by the downward inclined surface are substantially the same, this stirring is performed. It is possible to sufficiently stir the object to be stirred in a stirring container using blades while keeping it constant. Further, the force in the direction of the rotation axis applied to the rotation shaft portion can be further reduced.

そして、撹拌処理対象となる被撹拌物の粘度に応じて、上向き傾斜面と下向き傾斜面のそれぞれの面積および傾斜角度が設定されている場合は、被撹拌物の粘度を考慮して上向き傾斜面による送り量と下向き傾斜面による送り量を使用者の所望量に調整した撹拌羽根を用いることができる。例えば、混合しにくい高粘度の被撹拌物を撹拌する場合、下向き傾斜面による下方への送り量を上向き傾斜面による上方への送り量よりも数倍多くして容器底面へ押し付けるように上向き傾斜面と下向き傾斜面を設計することと同様に、撹拌羽根の回転方向、傾斜面の数、および傾斜面の傾斜角度を適宜選定することにより、高粘度の被撹拌物であっても確実に撹拌することができる。   And according to the viscosity of the object to be stirred, when the area and the inclination angle of the upward inclined surface and the downward inclined surface are set, the upward inclined surface in consideration of the viscosity of the object to be stirred It is possible to use a stirring blade in which the feed amount due to and the feed amount due to the downward inclined surface are adjusted to a user's desired amount. For example, when stirring a highly viscous material that is difficult to mix, the downward feed amount due to the downwardly inclined surface is several times greater than the upward feed amount due to the upwardly inclined surface, and the upwardly inclined surface is pressed against the container bottom surface. As with the design of the surface and the downward sloping surface, it is possible to reliably stir even high-viscosity objects by appropriately selecting the rotation direction of the stirring blades, the number of inclined surfaces, and the inclination angle of the inclined surfaces. can do.

本発明の最良の実施形態を図面に基づいて説明する。尚、以下に述べる実施形態は本発明を具体化した一例に過ぎず、本発明の技術的範囲を限定するものでない。ここに、図１は本発明の一実施形態に係る撹拌羽根の外観図、図２は前記撹拌羽根の正面図、図３は前記撹拌羽根を示す図であって、（ａ）は図２におけるＡ−Ａ線矢視断面図、（ｂ）は図２におけるＢ−Ｂ線矢視断面図である。
各図において、この実施形態に係る撹拌羽根１は、回転軸部２の外周に２つの翼３Ａ，３Ｂを回転軸部２の径方向（矢印Ｅで示す軸部径方向）外向きに延設したものである。 The best embodiment of the present invention will be described with reference to the drawings. The embodiment described below is merely an example embodying the present invention, and does not limit the technical scope of the present invention. 1 is an external view of a stirring blade according to an embodiment of the present invention, FIG. 2 is a front view of the stirring blade, FIG. 3 is a view showing the stirring blade, and FIG. AA arrow sectional drawing, (b) is a BB arrow sectional drawing in FIG.
In each figure, the stirring blade 1 according to this embodiment has two blades 3A and 3B extending outwardly in the radial direction of the rotary shaft 2 (shaft radial direction indicated by arrow E) on the outer periphery of the rotary shaft 2. It is what.

回転軸部２は、薄肉の軸基部４と厚肉部５とが一体で平面視正方形状に形成されている。軸基部４と厚肉部５の境界部分は段部８となっている。そして、段部８を含む回転軸部２の平面中央部に、後述するモータの駆動軸１１を連結するための軸穴６が上下貫通して形成されている。この場合、軸穴６の穴心が回転軸部２の回転軸心Ｃとなっている。軸基部４と厚肉部５の隅部には、それぞれ雌ネジ穴７，７が設けられている。一方、駆動軸１１の下端部近傍に設けられた係合部９の下面には段部１０が形成されている。駆動軸１１はその先端が回転軸部２の軸穴６を通されて段部１０が回転軸部２の段部８と係合することにより、回転軸部２に対し位置決めされる。そして、駆動軸１１の係合部９の上下貫通穴２４，２４を通されたボルト１２，１２が回転軸部２の雌ネジ穴７，７に螺止されることにより、撹拌羽根１が駆動軸１１に一体に固定される。   The rotating shaft 2 has a thin shaft base 4 and a thick portion 5 that are integrally formed in a square shape in plan view. A boundary portion between the shaft base portion 4 and the thick portion 5 is a stepped portion 8. And the shaft hole 6 for connecting the drive shaft 11 of the motor mentioned later is formed in the plane center part of the rotating shaft part 2 containing the step part 8 up and down. In this case, the hole center of the shaft hole 6 is the rotation axis C of the rotation shaft portion 2. Female screw holes 7 and 7 are provided at the corners of the shaft base 4 and the thick portion 5, respectively. On the other hand, a step portion 10 is formed on the lower surface of the engaging portion 9 provided near the lower end portion of the drive shaft 11. The front end of the drive shaft 11 is passed through the shaft hole 6 of the rotating shaft portion 2 and the stepped portion 10 is engaged with the stepped portion 8 of the rotating shaft portion 2, whereby the drive shaft 11 is positioned with respect to the rotating shaft portion 2. Then, the agitation blade 1 is driven by screwing the bolts 12, 12 passed through the upper and lower through holes 24, 24 of the engaging portion 9 of the drive shaft 11 into the female screw holes 7, 7 of the rotary shaft portion 2. The shaft 11 is fixed integrally.

翼３Ａには、回転軸部２側から軸部径方向外向きに順に、水平板部１３、傾斜板部１４、境界板部１５、および傾斜板部１６が設けられている。傾斜板部１４は水平板部１３からヒネリ部１７を経て形成され、その下面が回転軸部２の回転方向（矢印Ｓで示す軸部回転方向）の上流側（矢印Ｓとは反対方向）に向かって下向きの下向き傾斜面１４Ａとなっている。傾斜板部１６は傾斜板部１４の外方に垂直板状の境界板部１５を介して平板状に延設され、その上面が回転方向上流側に向かって上向きの上向き傾斜面１６Ａとなっている。翼３Ｂにも、翼３Ａと同様に、前記の傾斜板部１４と前記の傾斜板部１６が回転軸部２の径方向に交互に形成されている。   The blade 3A is provided with a horizontal plate portion 13, an inclined plate portion 14, a boundary plate portion 15, and an inclined plate portion 16 in order from the rotary shaft portion 2 side outward in the shaft portion radial direction. The inclined plate portion 14 is formed from the horizontal plate portion 13 through the ridge portion 17, and the lower surface thereof is on the upstream side (the direction opposite to the arrow S) in the rotation direction of the rotation shaft portion 2 (the shaft portion rotation direction indicated by the arrow S). The downward inclined surface 14A is directed downward. The inclined plate portion 16 extends in a flat plate shape outside the inclined plate portion 14 via a vertical plate-like boundary plate portion 15, and its upper surface becomes an upward inclined surface 16 </ b> A that faces upward toward the upstream side in the rotational direction. Yes. Similarly to the blade 3 </ b> A, the blades 3 </ b> B are alternately formed with the inclined plate portions 14 and the inclined plate portions 16 in the radial direction of the rotary shaft portion 2.

翼３Ａにおける下向き傾斜面１４Ａは回転軸部２の外周から径方向距離ｒで示す位置までの間（径方向寸法＝ｒ−回転軸部２の半径）に形成され、上向き傾斜面１６Ａは径方向距離ｒ（例えば１６５ｍｍ）で示す位置から径方向距離Ｒ（例えば２１０ｍｍ）で示す翼先端までの間（径方向寸法＝Ｒ−ｒ、例えば４５ｍｍ）に形成されている。また、翼３Ｂにおける下向き傾斜面１４Ａも回転軸部２の外周から径方向距離ｒで示す位置までの間に形成され、上向き傾斜面１６Ａも径方向距離ｒで示す位置から径方向距離Ｒで示す翼先端までの間（径方向寸法＝Ｒ−ｒ）に形成されている。すなわち、各翼３Ａ，３Ｂの各上向き傾斜面１６Ａ，１６Ａはそれぞれ回転軸心Ｃから回転軸部２の径方向同じ距離の位置に配置されており、各下向き傾斜面１４Ａ，１４Ａもそれぞれ回転軸心Ｃから回転軸部２の径方向同じ距離の位置に配置されている。   The downward inclined surface 14A of the blade 3A is formed from the outer periphery of the rotating shaft 2 to the position indicated by the radial distance r (radial dimension = r−radius of the rotating shaft 2), and the upward inclined surface 16A is in the radial direction. It is formed between a position indicated by a distance r (for example, 165 mm) and a blade tip indicated by a radial distance R (for example, 210 mm) (radial dimension = R−r, for example, 45 mm). Further, the downward inclined surface 14A of the blade 3B is also formed between the outer periphery of the rotating shaft 2 and the position indicated by the radial distance r, and the upward inclined surface 16A is also indicated by the radial distance R from the position indicated by the radial distance r. It is formed between the blade tips (radial dimension = R−r). That is, the upward inclined surfaces 16A and 16A of the blades 3A and 3B are arranged at the same distance in the radial direction of the rotary shaft portion 2 from the rotational axis C, respectively, and the downward inclined surfaces 14A and 14A are also rotational shafts. They are arranged at the same distance from the center C in the radial direction of the rotary shaft 2.

上記のように構成された撹拌羽根１は、図４および図５に示すように、例えば染料水溶液（被撹拌物Ｆ）を撹拌する撹拌装置２０に用いられる。撹拌装置２０は有底円筒状の撹拌容器２１内に撹拌羽根１を配備したものであり、撹拌羽根１は垂直向きに配置されたモータ２２の駆動軸１１の先端に固設されている。
そこで、モータ２２が駆動すると、撹拌羽根１が約１００ＲＰＭで回転（矢印Ｓ方向）する。すると、被撹拌物Ｆは翼３Ａ，３Ｂの下向き傾斜面１４Ａ，１４Ａにより下方に送られ、上向き傾斜面１６Ａ，１６Ａにより上方に送られる。これにより、下向き傾斜面１４から送り出された被撹拌物Ｆは矢印Ｈのように撹拌容器２１の底面近くで反転して傾斜板部１６ヘ向かう。一方、傾斜板部１６から送り出された被撹拌物Ｆは矢印Ｊのように水面近くで反転して傾斜板部１４へ戻る。 As shown in FIGS. 4 and 5, the stirring blade 1 configured as described above is used in, for example, a stirring device 20 that stirs an aqueous dye solution (stirred object F). The stirring device 20 has a stirring blade 1 disposed in a bottomed cylindrical stirring vessel 21, and the stirring blade 1 is fixed to the tip of a drive shaft 11 of a motor 22 arranged in a vertical direction.
Therefore, when the motor 22 is driven, the stirring blade 1 rotates (in the direction of arrow S) at about 100 RPM. Then, the object to be stirred F is sent downward by the downward inclined surfaces 14A and 14A of the blades 3A and 3B, and is sent upward by the upward inclined surfaces 16A and 16A. Thereby, the to-be-stirred object F sent out from the downward inclined surface 14 is reversed near the bottom surface of the stirring vessel 21 as indicated by an arrow H and heads toward the inclined plate portion 16. On the other hand, the to-be-stirred object F sent out from the inclined plate portion 16 is reversed near the water surface as indicated by an arrow J and returns to the inclined plate portion 14.

従って、この撹拌羽根１によれば、翼３Ａ，３Ｂによる上下還流作用および周方向回転作用によって被撹拌物Ｆを撹拌容器２１内で広く移動させて十分に撹拌することができる。このことは、傾斜板部１４と傾斜板部１６の境目である境界板部１５の回転軌跡（１点鎖線Ｌ）上方の液面に、多数の小渦Ｇ，Ｇ，Ｇ，・・・を生じた現象からも明らかである。このように、被撹拌物Ｆの送り方向が上下２方向であるので撹拌効率が良く、被撹拌物Ｆが高粘度であっても十分に混合することができる。   Therefore, according to this stirring blade 1, the to-be-stirred object F can be moved widely in the stirring container 21 by the up-and-down reflux action and the circumferential rotation action by the blades 3A and 3B, and can be sufficiently stirred. This means that a large number of small vortices G, G, G,... Are formed on the liquid surface above the rotation locus (one-dot chain line L) of the boundary plate 15 that is the boundary between the inclined plate 14 and the inclined plate 16. It is clear from the phenomenon that occurred. Thus, since the feed direction of the material to be stirred F is two directions up and down, the stirring efficiency is good, and even if the material to be stirred F has a high viscosity, it can be sufficiently mixed.

尚、この撹拌羽根１の場合、境界板部１５の回転軌跡を表わす１点鎖線Ｌで囲まれた平面円形状の領域内で下降する被撹拌物Ｆの量が、前記の１点鎖線Ｌと、翼３Ａ，３Ｂの先端の回転軌跡を表わす１点鎖線Ｎとに囲まれたリング帯状の領域内で上昇する被撹拌物の量とほぼ同量となるように、各翼３Ａ，３Ｂの上向き傾斜面１６Ａ，１６Ａの面積および回転方向に対する傾斜角度θ（例えば３５度）と、各翼３Ａ，３Ｂの下向き傾斜面１４Ａ，１４Ａの面積および回転方向に対する傾斜角度θ（例えば３５度）が設定されている。
すなわち、下向き傾斜面１４Ａの面積は回転軸部２の外周から境界板部１５までの径方向距離と下向き傾斜面１４Ａの幅Ｐ（例えば５０ｍｍ）とに基づいて求められ、上向き傾斜面１６Ａの面積は傾斜板部１６の径方向寸法（Ｒ−ｒ）と上向き傾斜面１６Ａの幅Ｑ（例えば５０ｍｍ）とに基づいて求められる。そして、下向き傾斜面１４Ａによる被撹拌物Ｆの送り量は、前記で求めた下向き傾斜面１４Ａの面積および傾斜角度θの正弦値を変数とする積分関数から求められる。また、上向き傾斜面１６Ａによる被撹拌物Ｆの送り量も、上向き傾斜面１６Ａの面積および傾斜角度θの正弦値を変数とする積分関数から求められる。 In the case of the stirring blade 1, the amount of the stirring object F that falls in the planar circular region surrounded by the one-dot chain line L representing the rotation trajectory of the boundary plate portion 15 is the above-described one-dot chain line L. The blades 3A and 3B face upward so that the amount of the object to be stirred rises in the ring-band region surrounded by the one-dot chain line N representing the rotation trajectory of the tips of the blades 3A and 3B. An inclination angle θ (for example, 35 degrees) with respect to the area and the rotation direction of the inclined surfaces 16A, 16A and an inclination angle θ (for example, 35 degrees) with respect to the area and the rotation direction of the downward inclined surfaces 14A, 14A of the blades 3A, 3B are set. ing.
That is, the area of the downward inclined surface 14A is obtained based on the radial distance from the outer periphery of the rotating shaft 2 to the boundary plate portion 15 and the width P (for example, 50 mm) of the downward inclined surface 14A, and the area of the upward inclined surface 16A. Is obtained based on the radial dimension (Rr) of the inclined plate portion 16 and the width Q (for example, 50 mm) of the upward inclined surface 16A. Then, the feed amount of the object F to be stirred by the downward inclined surface 14A is obtained from an integral function using the area of the downward inclined surface 14A and the sine value of the inclination angle θ obtained as described above as variables. Further, the feed amount of the object F to be stirred by the upward inclined surface 16A can also be obtained from an integral function using the area of the upward inclined surface 16A and the sine value of the inclination angle θ as variables.

従って、この撹拌羽根１では、下向き傾斜面１４Ａにより下降する被撹拌物Ｆの送り量と上向き傾斜面１６により上昇する被撹拌物Ｆの送り量がほぼ等しいので、被撹拌物Ｆが十分に撹拌されているにも拘わらず、被撹拌物Ｆの液面は小渦Ｇの部分以外で比較的平定になっている。そして、下向き傾斜面１４Ａに生じる上向きの反力と上向き傾斜面１６Ａに生じる下向きの反力は互いに相殺されるので、回転軸部２にかかる回転軸心Ｃ方向の力は極めて小さくなり、駆動軸１１およびモータ２２への力はほとんど生じない。これにより、撹拌羽根１を例えば手持ち式撹拌機に用いた場合でも上下動することなく安定するため、手で抑えきれずに翼３Ａ，３Ｂが浮き上がったり、あるいは逆に沈み込んだりすることがない。従って、被撹拌物Ｆが撹拌容器２１から飛び出して周囲を汚したりせず、翼３Ａ，３Ｂが撹拌容器２１の底部と接触して破損したりしない。   Therefore, in this stirring blade 1, since the feed amount of the stirred object F that is lowered by the downward inclined surface 14A is substantially equal to the feed amount of the stirred object F that is raised by the upward inclined surface 16, the stirred object F is sufficiently stirred. In spite of this, the liquid level of the object to be stirred F is relatively flat except for the small vortex G. Since the upward reaction force generated on the downward inclined surface 14A and the downward reaction force generated on the upward inclined surface 16A cancel each other, the force in the direction of the rotational axis C applied to the rotary shaft portion 2 becomes extremely small, and the drive shaft 11 and almost no force on the motor 22. Thereby, even when the stirring blade 1 is used for a hand-held stirrer, for example, it is stabilized without moving up and down, so that the blades 3A and 3B are not lifted up or are not subducted. . Therefore, the object to be stirred F does not jump out of the stirring container 21 and contaminate the surroundings, and the blades 3A and 3B do not come into contact with the bottom of the stirring container 21 and are not damaged.

尚、上記の実施形態では、全ての翼の上向き傾斜面により上方へ送られる被撹拌物の送り量と、全ての翼の下向き傾斜面により下方へ送られる被撹拌物の送り量とが略同量となるように、上向き傾斜面の面積および回転方向に対する傾斜角度と、各翼の下向き傾斜面の面積および回転方向に対する傾斜角度θを設定したが、本発明の撹拌羽根はそれに限定されるものでない。
例えば、図６に示すように、下向き傾斜面１４Ａの面積が撹拌羽根１よりも広い傾斜板部１４を有する撹拌羽根１ａを適用することができる。すなわち、傾斜板部１４は下向き傾斜面１４Ａの回転方向の幅Ｐが同じで、回転軸心Ｃから境界板部１５までの径方向距離ｒ１が撹拌羽根１における径方向距離ｒよりも長く設定されている。これに伴って、境界板部１５から翼先端までの傾斜板部１６ａの径方向寸法（Ｒ−ｒ１）が短くなっている。すなわち、傾斜板部１６ａの上向き傾斜面１６Ａの面積は撹拌羽根１における傾斜板部１６のものよりも狭くなっている。 In the above-described embodiment, the feed amount of the agitated object sent upward by the upward inclined surface of all the blades is substantially the same as the feed amount of the agitated object sent downward by the downward inclined surface of all the blades. The area of the upward inclined surface and the inclination angle with respect to the rotation direction, and the area of the downward inclined surface of each blade and the inclination angle θ with respect to the rotation direction were set so that the amount of the stirring blade of the present invention is limited thereto. Not.
For example, as shown in FIG. 6, a stirring blade 1 a having an inclined plate portion 14 in which the area of the downward inclined surface 14 </ b> A is wider than the stirring blade 1 can be applied. That is, the inclined plate portion 14 has the same rotational width P of the downward inclined surface 14A, and the radial distance r1 from the rotation axis C to the boundary plate portion 15 is set to be longer than the radial distance r of the stirring blade 1. ing. Accordingly, the radial dimension (R-r1) of the inclined plate portion 16a from the boundary plate portion 15 to the blade tip is shortened. That is, the area of the upward inclined surface 16A of the inclined plate portion 16a is narrower than that of the inclined plate portion 16 in the stirring blade 1.

かかる撹拌羽根１ａは、撹拌装置２０ａの撹拌容器２１内の奥底部に配置して高粘性の被撹拌物Ｆの撹拌混合に用いると好都合である。すなわち、下向き傾斜面１４Ａの面積を広くし上向き傾斜面１６Ａの面積を狭くしたことにより、下向きの送り量が上向きの送り量よりも多くなるので、高粘性の被撹拌物Ｆを撹拌容器２１の底面に強制的に押し付けて効率よく混練することができ、被撹拌物Ｆ中に塊状部分や継粉部分があったとしても、これらを迅速に無くことができる。このように、処理対象となる被撹拌物の粘度に応じて、上向き傾斜面１４Ａの面積および回転方向に対する傾斜角度θと、下向き傾斜面１６Ａの面積および回転方向に対する傾斜角度θとを適宜に選定することにより、より確実に撹拌効率の向上化を図ることができる。   Such a stirring blade 1a is conveniently disposed at the bottom of the stirring container 21 of the stirring device 20a and used for stirring and mixing the highly viscous stirring object F. That is, since the downward feed amount becomes larger than the upward feed amount by increasing the area of the downward inclined surface 14A and reducing the area of the upward inclined surface 16A, the highly viscous to-be-stirred object F is mixed into the stirring vessel 21. It can be forcibly pressed against the bottom surface and kneaded efficiently, and even if there is a lump or spatter in the material to be stirred F, these can be eliminated quickly. As described above, the area of the upward inclined surface 14A and the inclination angle θ with respect to the rotation direction, and the area of the downward inclined surface 16A and the inclination angle θ with respect to the rotation direction are appropriately selected according to the viscosity of the object to be stirred. By doing so, it is possible to improve the stirring efficiency more reliably.

また、上記では境界板部１５を介して傾斜板部１４と傾斜板部１６，１６ａを配置したが、図７に示す撹拌羽根１ｂのように、ヒネリ部１７とは逆向きに捻ったヒネリ部２３を介して傾斜板部１４と傾斜板部１６ａを設けても構わない。あるいは、図８（ａ），（ｂ）に示す撹拌羽根１ｃのように、ヒネリ部１７のない平板状の傾斜板部１４ａを回転軸部２に直に固設したものであってもよい。   Further, in the above description, the inclined plate portion 14 and the inclined plate portions 16 and 16a are arranged via the boundary plate portion 15. However, as in the stirring blade 1b shown in FIG. The inclined plate portion 14 and the inclined plate portion 16a may be provided via 23. Alternatively, as in the stirring blade 1c shown in FIGS. 8 (a) and 8 (b), a flat inclined plate portion 14a having no ridge portion 17 may be directly fixed to the rotary shaft portion 2.

そして、各翼３Ａ，３Ｂに傾斜板部１４，１４ａと傾斜板部１６，１６ａをそれぞれひとつずつ設けたものを例示したが、本発明はそれに限るものでなく、図９に示す撹拌羽根１ｄのように、各翼３Ａ，３Ｂに傾斜板部１４ａと傾斜板部１６を交互に配置しこれらを２組設けたもの、あるいは３組以上設けたものであってよい。かかる構成の場合、或る下向き傾斜面１４Ａにより下向きに送られた被撹拌物、または、或る上向き傾斜面１６Ａにより上向きに送られた被撹拌物は、隣の上向き傾斜面１６Ａまたは下向き傾斜面１４Ａで上向きまたは下向きに送られる。従って、撹拌羽根１〜１ｃのように各翼３Ａ，３Ｂの先端近傍から回転軸部２近傍の間で被撹拌物が上下に大きく周回混合される場合と比べて、被撹拌物が各翼３Ａ，３Ｂの長手方向に細かく周回して混合されるので、撹拌効率が高くなる。尚、前記の構成で、平板状の傾斜板部１４ａに替えてヒネリ部１７を有する傾斜板部１４を用いることが可能であるのは言うまでもない。   And although what each provided the inclination board part 14 and 14a and the inclination board part 16 and 16a to each blade 3A, 3B was illustrated, this invention is not limited to it, The stirring blade 1d shown in FIG. As described above, the inclined plate portions 14a and the inclined plate portions 16 may be alternately arranged on each of the blades 3A and 3B, and two sets thereof may be provided, or three or more sets may be provided. In such a configuration, an object to be stirred sent downward by a certain downwardly inclined surface 14A or an object to be stirred upward sent by an upwardly inclined surface 16A is an adjacent upwardly inclined surface 16A or downwardly inclined surface. 14A is sent upward or downward. Therefore, compared to the case where the object to be stirred is greatly swirled up and down between the vicinity of the tip of each blade 3A, 3B and the vicinity of the rotary shaft 2 as in the stirring blades 1 to 1c, the object to be stirred is each blade 3A. , 3B is finely circulated and mixed in the longitudinal direction, so that the stirring efficiency is increased. In addition, it cannot be overemphasized that it is possible to use the inclined board part 14 which has the ridge part 17 instead of the flat inclined board part 14a with the said structure.

これまでに述べた撹拌羽根は上向き傾斜面および下向き傾斜面を有する翼を２枚備えたものを例示したが、図１０に示すように、上向き傾斜面および下向き傾斜面を有する３枚の翼３Ａ，３Ｂ，３Ｃを回転軸部２の外周に回転軸心Ｃを中心として放射状（例えば放射角１２０度）に延設した撹拌羽根１ｅであってもよい。あるいは、前記の翼４枚以上を回転軸部の外周に延設した撹拌羽根も本発明に含まれる。更には、前記の翼１枚を回転軸部の外周に延設したものでもよい。   The agitation blades described so far are exemplified by those having two blades having an upward inclined surface and a downward inclined surface. However, as shown in FIG. 10, three blades 3A having an upward inclined surface and a downward inclined surface are provided. , 3B, 3C may be stirring blades 1e extending radially around the rotation axis C around the rotation shaft portion 2 (for example, a radiation angle of 120 degrees). Or the stirring blade which extended four or more said blades to the outer periphery of the rotating shaft part is also contained in this invention. Furthermore, the above-described one blade may be extended on the outer periphery of the rotating shaft portion.

また、上記では撹拌羽根１〜１ｅを平面に見て時計回り（矢印Ｓ方向）に回転させるように構成したが、上向き傾斜面と下向き傾斜面をそれぞれ撹拌羽根１〜１ｅのものとは回転方向に対し逆向きに傾斜させ、かつ、回転軸部を平面視反時計回りに回転させるようにした撹拌羽根も本発明に含まれる。
そして、撹拌羽根の翼先端を鋭利な刃状に形成しておくと、高粘度の被撹拌物を低速回転でせん断性よく撹拌することができる。 In the above description, the stirring blades 1 to 1e are configured to rotate clockwise (in the direction of the arrow S) when seen in a plane. However, the upward inclined surface and the downward inclined surface are the rotation directions of the stirring blades 1 to 1e, respectively. In contrast, the present invention also includes an agitating blade that is inclined in the opposite direction and is rotated counterclockwise in a plan view.
And if the blade tip of the stirring blade is formed in a sharp blade shape, it is possible to stir the high-viscosity object to be stirred with good shearing performance at low speed.

上述した各撹拌羽根１〜１ｅを高速で回転することにより、被撹拌物やその溶媒中に空洞（キャビテーション）を発生させるとともに、高速流となっている被撹拌物中に空洞を分散させることができる。かかる空洞の発生と消滅に伴って生じる衝撃波は被撹拌物全体に及び、その結果、被撹拌物の微細化、乳化、洗浄、研磨、あるいは微細化による新しい機能を被撹拌物に発現させるほか、新しい物理化学的反応を発生させて撹拌の高度化が得られる。加えて、被撹拌物中の撹拌対象粒子や溶媒に対し、温度、圧力、および電磁波などのように制御可能な条件を付加することにより、撹拌のよりいっそうの高度化を実現することができる。尚、衝撃波の被撹拌物中における衝撃波の発生分布を制御するために、撹拌羽根の回転速度や傾斜面の数を適宜に選定するとよい。   By rotating the stirring blades 1 to 1e described above at a high speed, cavities are generated in the object to be stirred and its solvent, and the cavities are dispersed in the object to be stirred that is in a high-speed flow. it can. The shock wave generated with the generation and disappearance of such cavities extends to the entire object to be stirred, and as a result, a new function is exhibited in the object to be stirred by the refinement, emulsification, washing, polishing, or refinement of the object to be stirred. New physicochemical reactions can be generated, resulting in higher agitation. In addition, by adding controllable conditions such as temperature, pressure, and electromagnetic waves to the particles to be stirred and the solvent in the object to be stirred, it is possible to realize further advancement of stirring. In addition, in order to control the generation distribution of the shock wave in the object to be stirred, the rotation speed of the stirring blade and the number of inclined surfaces may be appropriately selected.

尚、本発明の撹拌羽根は、モータ駆動軸および回転軸部の軸心を水平方向に向けた横向きの姿勢で撹拌容器内に配備してもよい。その場合、本発明の撹拌羽根に形成された上向き傾斜面の向きを示す「上向き」は、水平方向の一方向（例えば、左方向）を指し、下向き傾斜面の向きを示す「下向き」は、水平方向の他の方向（例えば、右方向）を意味する。   Note that the stirring blade of the present invention may be disposed in the stirring container in a lateral orientation in which the axis of the motor drive shaft and the rotating shaft portion are horizontally oriented. In that case, “upward” indicating the direction of the upward inclined surface formed on the stirring blade of the present invention refers to one direction in the horizontal direction (for example, the left direction), and “downward” indicating the direction of the downward inclined surface is It means another direction in the horizontal direction (for example, right direction).

本発明の一実施形態に係る撹拌羽根の外観図である。It is an external view of the stirring blade which concerns on one Embodiment of this invention. 前記撹拌羽根の正面図である。It is a front view of the said stirring blade. 前記撹拌羽根を示す図であって、（ａ）は図２におけるＡ−Ａ線矢視断面図、（ｂ）は図２におけるＢ−Ｂ線矢視断面図である。It is a figure which shows the said stirring blade, Comprising: (a) is AA arrow sectional drawing in FIG. 2, (b) is BB arrow sectional drawing in FIG. 前記撹拌羽根を使用した撹拌装置の側面構成図である。It is a side block diagram of the stirring apparatus using the said stirring blade. 前記撹拌装置の平面図である。It is a top view of the said stirring apparatus. 本発明の別の実施形態に係る撹拌羽根を使用した撹拌装置の側面構成図である。It is a side block diagram of the stirring apparatus using the stirring blade which concerns on another embodiment of this invention. 本発明の更に別の実施形態に係る撹拌羽根の平面図である。It is a top view of the stirring blade which concerns on another embodiment of this invention. 本発明の他の実施形態に係る撹拌羽根を示したものであり、（ａ）は平面図、（ｂ）は（ａ）におけるＤ−Ｄ線矢視断面図である。The stirring blade which concerns on other embodiment of this invention is shown, (a) is a top view, (b) is DD sectional view taken on the line in (a). 本発明の更に他の実施形態に係る撹拌羽根の正面図である。It is a front view of the stirring blade which concerns on other embodiment of this invention. 本発明のなおさら他の実施形態に係る撹拌羽根の平面図である。It is a top view of the stirring blade which concerns on the further another embodiment of this invention.

符号の説明Explanation of symbols

１，１ａ，１ｂ，１ｃ，１ｄ，１ｅ 撹拌羽根
２ 回転軸部
３Ａ，３Ｂ，３Ｃ 翼
１１ 駆動軸
１４，１４ａ 傾斜板部
１４Ａ 下向き傾斜面
１６，１６ａ 傾斜板部
１６Ａ 上向き傾斜面
Ｃ 回転軸心
Ｅ，Ｈ，Ｊ，Ｓ 矢印
Ｆ 被撹拌物
Ｐ，Ｑ 幅
Ｒ，ｒ，ｒ１ 距離
θ 傾斜角度 1, 1a, 1b, 1c, 1d, 1e Stirring blade 2 Rotating shaft portions 3A, 3B, 3C Blade 11 Drive shaft 14, 14a Inclined plate portion 14A Downward inclined surface 16, 16a Inclined plate portion 16A Upward inclined surface C Rotation axis E, H, J, S Arrow F Stirred object P, Q Width R, r, r1 Distance θ Inclination angle

Claims (3)

回転軸部の外周に軸部径方向外向きに延設された翼に、軸部回転方向上流側に向かって上向きの上向き傾斜面と、軸部回転方向上流側に向かって下向きの下向き傾斜面とを軸部径方向に交互に形成したことを特徴とする撹拌羽根。 A blade extending outward in the axial direction of the shaft portion on the outer periphery of the rotating shaft portion, an upwardly inclined surface that faces upward toward the upstream side in the rotational direction of the shaft portion, and a downwardly inclined surface that faces downward toward the upstream side in the rotational direction of the shaft portion Are alternately formed in the axial direction of the shaft portion. 翼の上向き傾斜面により上方へ送られる被撹拌物の送り量と、翼の下向き傾斜面により下方へ送られる被撹拌物の送り量とが略同量となるように、上向き傾斜面の面積および軸部回転方向に対する傾斜角度と、下向き傾斜面の面積および軸部回転方向に対する傾斜角度とが設定されている請求項１に記載の撹拌羽根。 The area of the upward inclined surface and the amount of the stirred object sent upward by the upward inclined surface of the blade and the amount of the stirred object sent downward by the downward inclined surface of the blade are substantially the same. The stirring blade according to claim 1, wherein an inclination angle with respect to the rotation direction of the shaft portion, an area of the downward inclined surface, and an inclination angle with respect to the rotation direction of the shaft portion are set. 翼の上向き傾斜面の面積および軸部回転方向に対する傾斜角度と、翼の下向き傾斜面の面積および軸部回転方向に対する傾斜角度とが、被撹拌物の粘度に応じて設定されている請求項１に記載の撹拌羽根。 The area of the upward inclined surface of the wing and the inclination angle with respect to the rotation direction of the shaft portion, and the area of the downward inclination surface of the wing and the inclination angle with respect to the rotation direction of the shaft portion are set according to the viscosity of the object to be stirred. The stirring blade described in 1.
JP2004104613A 2004-03-31 2004-03-31 Agitation blade Pending JP2005288246A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170040356A (en) * 2014-08-13 2017-04-12 베르살리스 에스.피.에이. Rotor and stirring device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170040356A (en) * 2014-08-13 2017-04-12 베르살리스 에스.피.에이. Rotor and stirring device
JP2017529992A (en) * 2014-08-13 2017-10-12 ベルサリス、ソシエタ、ペル、アチオニＶｅｒｓａｌｉｓ Ｓ．Ｐ．Ａ． Rotor and stirring device
KR102408877B1 (en) 2014-08-13 2022-06-13 베르살리스 에스.피.에이. Rotor and stirring device

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