Overview
　　The vacuum spiral dryer uses two sets of hollow spiral blades to circulate materials inside the equipment, releasing heat energy through thermal conduction to achieve the drying purpose in vacuum state. The structure and working principle determine high thermal efficiency, low energy consumption, high efficiency, small footprint, convenient operation, and greatly reduce production costs. Different materials and manufacturing processes can be selected according to the material characteristics and requirements, Can be equipped with various auxiliary equipment to meet customer production needs.
Principle
　　The vacuum spiral dryer is designed with an internal hollow blade structure, which allows the material to circulate and flow fully inside the box, increasing the contact heat energy of the material. The dried material is more uniform and has no dead corner residue. The heat energy is transmitted through the hollow blades and the wall surface of the box, and the material is enveloped and flows by the heat energy, with almost no loss of heat energy. The overall equipment adopts a sealed working mode to prevent dust, odor, and leakage. The later condensation and recovery device is used, Recycling of recyclable resources and pollutants to achieve pollution-free emissions, different heating media can be used according to the temperature requirements of the materials: steam, hot water, and thermal oil. Depending on the materials, the feeding method can be one-time or multiple times. After drying, the vacuum is discharged and the discharge valve is opened to discharge the material.
Characteristic
Energy saving: The heating area of the equipment increases, and the heat energy is fully absorbed by the materials, reducing the loss of heat energy.

Environmental protection: The equipment operates under vacuum and can recycle and reuse resources through a condensation recovery device, without polluting emissions.

High efficiency: Due to the increase in heating area of the equipment, the efficiency is greatly improved compared to conventional drying equipment, thereby saving energy consumption.

Dry material categories: liquid materials, powder materials.
Application

●Cannot accept high-temperature thermosensitive materials

●Easy to oxidize and deteriorate, flammable and explosive materials

●Materials for solvent recovery and hazardous gas emissions

Note: Some parameters may be adjusted according to different materials during design. The parameters are subject to change without prior notice.