1. According to the shape of the end face of the rotor, it can be divided into oval, cylindrical and Mitsubishi. Depending on the shape of the rotor, the effect is different, and an oval shape is ideal. Compared with the oval type, the shear force of the circular type is not as large as that of the oval type, which cannot make the material fully mixed, and the effect of simultaneous dispersion is not as good as that of the oval type. The manufacturing process of the Mitsubishi type is too demanding, and now only Germany can produce it. But the price is also ridiculously expensive. Therefore, the elliptical row of rotors is now an ideal rotor shape.

2. It can be divided into tangent type and tooth and type according to whether the rotor teeth are combined or not. The tangential type refers to the elliptical rotor. It has a shearing effect with the wall of the secret room. The tooth and type are mainly for the Mitsubishi rotor, and the Mitsubishi rotor is the shear between the rotor and the rotor.

3. According to the speed of the rotor, it can be divided into slow speed, medium speed and high speed. The speed of the slow speed rotor is generally less than or equal to 20r/min. The rotor speed of medium speed is generally between 30r/min and 50r/min, and the high speed is generally the rotor speed above 60r/min.

4. According to whether the speed of the rotor changes, it can be divided into single-speed internal mixer, two-speed internal mixer, and variable-speed internal mixer. The so-called single-speed internal mixer means that the speed of the rotor has been adjusted when it comes out and cannot be changed, and the speed ratio between the two rotors is fixed. Two-speed internal mixer refers to a mixer equipped with two motors, so the cost of construction is much higher than that of a mixer with one motor, and the energy consumption is also much larger. Variable speed mixer means that there are 2 motors and the speed of the rotor driven by these two motors is also adjustable, so the cost process will be larger than the first two. Buying one of these mixers can buy at least 4-5 single-speed mixers. So it's not worth it.

5. According to the mixing capacity of internal mixer, it can be divided into large capacity, medium capacity, small capacity Internal mixer for capacity and experiment. The standard of large-capacity internal mixer is generally when the internal mixer capacity is above 370L, the medium-capacity internal mixer generally refers to 80L-270L internal mixer, and the small-capacity internal mixer is about 10L-50L internal mixer. . Experimental mixers are generally below 10L and are dedicated to sample preparation.

6. According to the rotor speed ratio, it can be divided into synchronous rotor and asynchronous rotor. Synchronous rotor means that the two rotors have the same speed, and asynchronous means that the speed of the two rotors is different, one is faster and the other is slower.