Why is the current change of the mixing motor not significant?
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A 15KW motor is connected to a reducer, and a paddle mixer is installed below it. Why is the current drawn by the motor almost the same when the liquid level in the reactor is 2 meters high as it is when it is 3 meters high? There are also fluctuations in the current even when the liquid level remains constant. Where do these fluctuations mainly come from?
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The variation in stirring current is mainly related to the shaft power required for stirring. The stirring power P is given by P=Nρ*ρ*N3*d5; in short, it depends on the fifth power of the impeller diameter, the third power of the rotation speed, the density of the liquid, as well as the power constant Nρ； The power coefficient Nρ is related to the structure of the reactor (such as the type of impeller, the presence of baffles, the presence of guide cylinders, etc.). If the reactor has only one layer of stirring, the current may not change.