The inner liner of the original crushing chamber is circular, but now it is transformed into a 32~64 polygon with an angle of 5° to 10°. After experimentation, we found that no material formation will occur after such a transformation, and the crushing effect can be increased. After the material hits the inner wall, its direction of movement changes, which effectively increases the probability of contact between the material and the blade.
The blade structure is modified: it is changed to a combination of the lower plate structure knife group and the upper fan-shaped crushing knife. The crushing knife is divided into 3 layers, each layer is equipped with 3 blades, and the oblique angle of the blades is about 10°. Doing so can improve the effect of material drying, crushing and ascending movement. For viscous materials, it can reduce the wall sticking phenomenon and effectively increase the crushing effect.
Transformation of the feed system of the flash dryer:
The inside of the seal pretends to be a labyrinth seal. The length of the labyrinth seal is about 120mm, and the original axial seal gap design is 5mm. After thermal expansion, the gap is as small as 2mm.
Pretend a spacer ring in the middle of the original packing seal cavity. In this way, the sealed cavity can be divided into 2 parts. The sealing operating pressure will be higher than the working wind pressure of the flash main engine. This can prevent hot air and materials from leaking from the labyrinth seal.
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