Vacuum Dryer Introduction A vertical stirring vacuum dryer is one type of semi-continuous or continuous vacuum dryer. The raw material is fed into the dryer by a customized feeder, the boiling point is decreased under vacuum drying, the plates in the drying chamber continuously stir the raw material to increase the drying speed, and the humid air is removed by a vacuum pump. It's a suitable dryer for drying temperature-sensitive materials, toxic materials, and materials that are easily oxidized or require solvent recovery. There are three types: atmospheric pressure, airtight, and vacuum a) Atmospheric type: cylinder or octagon, integrated, and folio. The primary pipe for the heating medium's inlet and outlet might be within or outside the shell. b) Airtight type: cylindrical shell with a 5Kpa internal pressure rating; heating medium inlet and outlet main pipes can be inside or outside the shell. c) Vacuum type: cylindrical shell with 0.1Mpa design pressure for external pressure, heating medium inlet, and main pipe outlet in the shell.Vacuum Dryer website:http://www.aoto-machine.com/drying-machines/vacuum-dryer/