Usually, the centerline of the stirring tank of the stirring equipment coincides with the centerline of the stirring shaft, but there are also situations where the two axes are perpendicular to each other, form a central angle with each other, and are parallel to each other, which are called side entry type and oblique type respectively. Inlet type and offset type agitation equipment Side entry agitator is often used in super large flat bottom stirring tank. For example, when mixing oil and a small amount of additives in an oil tank of thousands of cubic meters, it is most convenient to use a side entry agitator for installation. Inclined agitators are mostly used for small portable agitators.
When there is no baffle and other accessories in the cylindrical stirring tank, if the axis of the stirring shaft coincides with the center line of the cylinder, and the liquid to be stirred is low viscosity, the liquid in the middle of the tank will form a so-called solid turning part. bad mixing zone. The solid rotating part is a liquid column whose diameter is about seven tenths of the diameter of the impeller, and this part of the liquid rotates at the same angular velocity as the impeller.
Therefore, there is no shear between the fluid units inside the liquid column, and it is difficult to exchange mass between the liquid inside and outside the liquid column. In order to eliminate its unfavorable influence on mixing, the method of adding accessory baffles can usually be used. However. When the rotational speed of the stirrer is constant, the addition of the baffle can increase the stirring power consumption by 3 to 8 times. The method of biasing the agitator can also achieve the effect of eliminating the solid co-rotating part, and the increased power consumption is very small.
I believe that after reading the content introduced in the above article, you will be able to use the mixing equipment much more smoothly, and you don't have to worry about encountering difficulties.
