Vacuum continuous spiral dryer is a kind of high-efficient and multi-functional drying equipment. Vacuum spiral continuous dryer adopts horizontal design, heated by conduction, materials are heated continuously in the process of transmission, according to the residence time of the materials, multi-axis linkage can be adopted to heat the materials, and the rotating speed of the host machine can be adjusted according to the speed of the materials flow during the operation of the equipment, and the materials will be discharged through the discharge port when the materials reach the drying requirements, and the water vapour or solvent gas can be condensed and recovered. Water vapour or solvent gas can be condensed and recovered.

Working Principle

  The material enters the dryer from the feeding port and moves along the heated cylinder under the push of the spiral blade. At the same time, the vacuum pump continuously draws away the air in the cylinder, so that a vacuum state is formed in the cylinder, which lowers the boiling point of water, so that the moisture in the material can be evaporated into water vapour quickly at a low temperature, and then be drawn out by the vacuum pump, so as to achieve the drying of the material.

Characteristic advantages

- High efficiency and energy saving: adopting vacuum drying technology, the moisture in the material can be quickly vaporised under low temperature, which not only has high drying efficiency, but also saves energy and reduces the running cost.

- Wide range of material processing: it is suitable for all kinds of materials, such as powder, granule, block, paste and so on, especially for the heat-sensitive, easy to oxidise, flammable and explosive materials drying effect is better.

- Good drying quality: drying under vacuum environment can avoid contacting with air, reduce the possibility of oxidation and deterioration, and at the same time, it can effectively prevent hardening of the material surface, and maintain the original shape, colour and nutrients of the material.

- Continuous and stable operation: it can realize continuous feeding and discharging, high production efficiency, stable and reliable operation, easy to realize automatic control, reduce manual intervention and labour intensity.

- Compact structure, small footprint: the overall structure of the equipment is designed to be compact, occupies little space, easy to install, and is suitable for a variety of production sites.

- Environmentally friendly and pollution-free: water vapour and odour produced during the drying process can be extracted through the vacuum system and recycled through condensation, reducing pollution to the environment and meeting environmental requirements.

Application Fields

  Widely used in chemical, pharmaceutical, food, electronic new materials, fertiliser and other industries, such as the chemical industry in a variety of powder, granular material drying, pharmaceutical industry in the drying of raw materials, intermediates, food industry in the drying of dehydrated vegetables, fruit powder, powdered milk, etc., electronic new materials industry in the drying of lithium battery cathode materials, electronic ceramics powder and so on.

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