The single cone vacuum dryer is mainly composed of a drive system, a motor reducer, a frame, bearings, a conical cylinder (with a jacket), a stirring screw, a sampling valve, a packing seal, and other components. The equipment adopts a direct connection between the motor reducer and the mixing screw belt, with variable frequency speed regulation and a speed of 0-20rpm. The screw belt and the mixing shaft are welded in a specific mold to ensure uniform clearance between the screw belt and the barrel wall, ensuring stable operation; Flexible graphite packing is used for sealing between the mixing shaft and the head, effectively preventing the entry of external impurities. Below is a brief introduction to the operating characteristics of a single cone vacuum dryer.

1. Filtration stage: Separation of product and mother liquor (vacuum filtration). The thickness of the filter cake can reach 200-500mm

2. Washing stage: further purification of filter cake, cleaning of residual mother liquor, and pre dehydration. Mix the filter cake and washing solution with a stirring blade to form a slurry,

3. The suspension filter cake was thoroughly washed.

4. Drying stage: After the filter cake is dehydrated, it is loosened by rotation. At the same time, the steam inside the jacket heats the inner wall, and the filter cake is heated and heated by heat conduction. The moisture quickly evaporates to achieve the drying effect. Accelerate the evaporation rate by vacuuming the device. By adding treated hot nitrogen and other media to remove the evaporated moisture, the drying of materials can be accelerated and the drying effect can be improved.

Note: Installing a stirring device on the equipment can complete the crystallization process under certain conditions, achieving integrated operation. And it can make it easier for the filter cake and washing solution to mix thoroughly during the washing stage, resulting in more thorough cleaning.