The rotational puddle mixer is a standardized puddle mixing instrument. Its structure features a rotational design, consisting of a base, support, motor, mixing drum, mixing shaft, and mixing blades. The instrument is flexible and convenient to use, with the main shaft speed being infinitely variable, ensuring stable speed and high starting torque. The control section uses advanced digital control circuitry, which ensures the stability of the characteristic working curve and minimizes the influence of the mixing medium. It is a standardized puddle mixing instrument widely used in oilfield laboratories, geology, metallurgy, and universities, research institutes.