An inverted cone structure is set up in the fluidization section at the bottom of the flash drying chamber to gradually expand the drying gas flow section from bottom to top. The bottom airflow is relatively large and the upper airflow is relatively small, thereby ensuring that the large particles in the lower part are in a fluidized state. At the same time, the small particles in the upper part are also in a fluidized state, causing the hot air to rotate along the cone, increasing the wind speed at the bottom, reducing the length of the cantilever part of the mixing shaft, and increasing the safety and reliability of operation; the bearing can be placed outside the machine, It effectively prevents the bearing from working in high temperature areas, thus extending the service life of the bearing.
A scraper is installed on the mixing teeth. While the material is crushed by the mixing teeth, it is also thrown towards the machine wall and sticks to the wall. If it is not scraped off in time, it will cause the equipment to vibrate in severe cases and even cause the mixer to freeze and not rotate. A scraper is installed on the mixing teeth, which can peel off the material stuck to the machine wall in time to avoid sticking to the wall.
The number of revolutions of the stirring shaft is controlled by a stepless speed regulating motor. Choose different rotation speeds according to the product particle size requirements. The faster the stirring shaft rotates, the smaller the particle size of the product will be.
A classifier is installed on the upper part of the dryer. By changing the hole diameter of the classifier and the height of the classification section, the air flow rate is changed to control the size and quantity of particles leaving the dryer, the final moisture content and the residence time of the material in the drying section.
The rotation speed of the screw conveyor of the feeder is controlled by an inorganic speed regulating motor. Control the feeding speed according to the material properties and drying process parameters.
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