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V type pitched paddleBeing V shape which made by lifting those blades with constant angle from impeller center to blade edge, whose lifting angle adjusted along the tank bottom head shape.Since installed close to the tank bottom, which can prevent the sedimentation of slurry particles more effectively than a standard paddle impeller.And the V type pitched paddle impeller also has the advantage of being able to agitate up to a low liquid level.The impeller is a simple shape and easy to fabricate, and they are the same good feature as pitched paddle impeller.•ApplicationLiquid-liquid mixing, low liquid level agitation, and solid-liquid suspension operations in general, prevention of slurry sedimentationSingle stage (standard)Most common impellers of high discharge and low shearing type deriving from marine propellers. The high-velocity axial flow containing swirls is associated with a wake flow that creates a large circulating flow.•ApplicationLiquid-liquid mixing, low-density slurry suspension, mixing of other low-viscosity materials excluding aeration agitation.Single or double stage (standard)A paddle-blades impeller consisting of rectangular blades that are fitted at an angle to create an axial flow having radial components. Easy to fabricate because of the simple structure and suitable for use involving large d/D ratios. The discharge has low pressure unlike the propeller type impellers.•ApplicationLiquid-liquid mixing, solid and liquid suspension in general, prevention of slurry sedimentation3-bladed propeller (for medium speeds)Pitched paddle (for low speeds)Open pitched paddleA variation of the paddle type impeller. Usually used for highly viscous materials that cannot be treated with the paddle type and for non-Newtonian fluids. The blades have rectangular holes, which during rotation, cause local plunges on the blade surface in radial and axial directions. This generates very strong kneading action for agitation and mixing.•ApplicationViscous solid and liquid mixing83枚プロペラ(中速用)ピッチドパドル(低速用)V型ピッチドパドル４枚ピッチドパドルのブレードを中心から半径方向に迫り上げたV型をしており、槽底の形状に合わせて角度を調整します。槽底近くに設置することで、一般的なパドル翼よりもスラリー粒子の堆積を抑制できます。また、低液位まで撹拌できるメリットもあります。形状がシンプルで製作が容易な点はピッチドパドルと同様です。●用途液-液混合、低液位撹拌、固-液懸濁操作一般、スラリーの沈降防止オープンピッチドパドルパドル形の変形タイプであり、用途は主にパドルで処理できない高粘度物や、非ニュートン流体などです。液中を角穴のあいたブレードが回転するとき、半径方向、軸方向のブレード面で局部巻込みが生まれます。そして強い練り作用によって撹拌、混合を行ないます。●用途粘調性固−液混合一・二段装備標準長方形の板ブレードからなる櫂型翼で、角度を付けることによって輻流をともなった軸流を作りだします。構造が簡単で製作も容易です。d/D値の大きい用途に適します。プロペラと異なり吐出流は低圧です。●用途液−液混合、固−液懸濁操作一般、スラリーの沈降防止。一段装備標準最も一般的なインペラで、船舶用プロペラに由来する高吐出、低剪断形です。旋回成分を含んだ高速軸流は、伴流を起こして槽内に大きな循環流を作りだします。●用途液−液混合、低濃度スラリーの懸濁。そのほか通気撹拌を除く低粘度一般。代表的インペラの紹介Typical Impellers