Do you know these six agitated vacuum dryers

Agitated vacuum dryer can be divided into the following six main types according to its structure and working principle:

• Structure: composed of horizontal cylinder, stirring shaft, rake teeth, transmission system and sealing device. Cylinder for the jacket structure, the jacket into the heating medium (such as steam, hot water or hot oil).
• Working principle: the material is added from the upper part of the cylinder, the rake teeth on the stirring shaft rotate the material positively and negatively, so that the material is heated in contact with the wall of the cylinder, and at the same time, the vacuum device draws away the vaporized water vapor to promote drying.
• Characteristics: Suitable for the drying of silt slurry, paste, powder and high viscosity materials, especially suitable for low temperature drying of heat-sensitive materials.
• Application: Widely used in pharmaceutical, chemical, food and other industries, such as vitamins, antibiotics and other heat-sensitive materials drying.

• Structure: It consists of fixed cylindrical container, rotating shaft and paddle. The paddle can be hollow design, through the heating medium.
• Working principle: the paddle rotates to make the material contact with the heating wall and paddle, heating the material through conduction and convection, and drying rapidly under vacuum environment.
• Characteristics: High heat transfer efficiency, suitable for dealing with high viscosity and easy to caking materials.
• Application: Suitable for chemical, pharmaceutical, food and other industries, especially the need for rapid drying occasions.

• Structure: It adopts conical jacket and hollow screw belt design, and the screw belt has the function of stirring and mixing.
• Working principle: the screw belt rotates to make the material fully contact with the heating wall, and at the same time, it operates at low temperature under the vacuum environment to realize high efficient drying.
• Features: large loading coefficient, no dead-end discharge, suitable for handling flammable and explosive, organic solvent and heat-sensitive materials.
• Application: suitable for drying loose powdery and granular solid materials.

• Structure: It is composed of vertical plate heating device and stirring system.
• Working principle: the materials are heated uniformly by stirring in the vertical plate heating device, and the drying is completed in the vacuum environment at the same time.
• Features: compact structure, suitable for mass production.
• Application: Suitable for chemical, pharmaceutical and other industries, especially where high efficiency drying is required.

• Structure: composed of drying chamber, heating and cooling system, conveyor belt and pumping system.
• Working principle: liquid or slurry materials are placed on the conveyor belt and dried by heating and cooling devices.
• Features: suitable for continuous drying, high drying efficiency.
• Application: suitable for food, chemical and other industries, such as liquid, slurry material drying.

• Structure: combining microwave heating technology and vacuum drying technology.
• Working principle: microwave directly penetrate the internal heating of the material, while in the vacuum environment to reduce the boiling point, reduce the destruction of heat-sensitive components.
• Features: fast drying speed, suitable for heat-sensitive materials.
• Application: suitable for pharmaceutical, food and other industries.

The above are the main types of Agitated vacuum dryer, each type is suitable for different materials and process requirements according to its structure and working principle. The selection of suitable stirred vacuum dryer needs to be based on the characteristics of the material, drying requirements and production scale comprehensive consideration.