由文献[1]P255可知，发酵罐通过机械搅拌叶片的直径为800，圆筒直

According to literature [1] P255, the diameter of the mechanical stirring blade is 800 and the diameter of the cylinder is 2400. We should consider the diameter of the spline shaft to strengthen the impact strength, so we choose the diameter of the stirring shaft as 100 It can be seen from the above calculations that the diameter of the agitating shaft of the shaft has been in accordance with the combination of torque and bending torque, so the following checks can be made on the critical speed.

As can be seen from the literature, the fermentation tank through the mechanical mixing blade diameter of 800, cylinder diameter of 2400, we should consider the diameter of the flower key shaft to strengthen the impact strength, so we selected the diameter of the mixing shaft in the design of 100, from the above calculation can be seen, the shaft mixing shaft diameter has met the combination of torque and bending torque, so the critical speed can be checked below.

It can be seen from the reference [1] p255 that the diameter of the fermentation tank's mechanical mixing blade is 800, and the diameter of the cylinder is 2400. We should consider the diameter of the spline shaft to enhance the impact strength. Therefore, we choose the diameter of the mixing shaft as 100 in the design. From the above calculation, we can see that the diameter of the mixing shaft of the shaft has met the combination of torque and bending torque respectively, so we can carry out the following for the critical speed Check.