The YPK three-bladed straight-paddle impeller is a radial flow impeller. When a baffle is present, it creates an up-and-down circulating flow. It generally operates under transitional flow conditions. At low speeds, its function is similar to that of a two-bladed flat paddle, while at high speeds, it exhibits a certain degree of shear force. It is suitable for unit operations such as mixing, dissolving, dispersing, heat transfer, and liquid-phase reactions.