The vacuum belt dryer is a contact type vacuum drying device with continuous feeding and continuous discharging. The liquid to be dried directly enters the interior of the dryer under high vacuum through the conveying mechanism, and several pieces are spread in the dryer. On the drying belt, a special rubber roller driven by the motor drives the drying belt to move along the direction of the dryer cylinder at a set speed. Each of the drying belts is provided with three independent heating plates and one cooling plate, and the drying belt is The heating plate and the cooling plate are closely fitted to transfer the energy required for drying to the material in contact with heat transfer.
When the drying belt moves from one end of the cylinder to the other end, the material has been dried and cooled, and when the drying belt is folded back, the dried cake is peeled off from the drying belt, and is broken down by a lifting device that moves up and down. In the device, the pulverized material is discharged through two air-glot type discharge hoppers. Since the material is directly dried under high vacuum for a period of time (usually 30-60 minutes), the particles obtained after drying have a certain degree of crystallization effect, and at the same time, there are micropores inside from the microstructure.
After directly pulverizing to the required particle size, the flowability of the particles is very good, and it can be directly compressed or filled with a capsule, and at the same time, since the particles have a microscopic loose structure, the fast solubility is excellent. Moreover, the appearance of the granules is good, and for the instant (granules) products, the grade of the products can be greatly improved. The belt vacuum dryer continuously feeds and continuously discharges at both ends of the fuselage.