Vacuum harrow dryer-Haihan drying equipment made for a customer in Shandong delivery is completed!

Working Principle:

      This machine is a novel horizontal intermittent vacuum drying equipment, the wet material evaporates by conduction, with scraper agitator constantly removes the material on the hot surface and pushes to form a circulating flow in the container, and the water evaporates and is pumped out by the vacuum pump.

Performance characteristics:
       ◎ The machine adopts large area sandwich heating method, large heat transfer surface, high thermal efficiency.
       ◎The machine is set with stirring, so that the material forms a continuous circulation state in the cylinder, which further improves the uniformity of the material's heating.
       ◎ The machine is set with stirring, so that it can smoothly dry slurry, paste and paste-like materials.

Adaptable materials:
       ◎ Pharmaceutical, food, chemical and other industries for the following materials drying:
       ◎ Applicable to slurry, paste, paste, powder materials;
       ◎The heat-sensitive materials which require low temperature drying;
       ◎Easy to oxidise, easy to explode, strong irritation, highly toxic materials;
       ◎ Require the recovery of organic solvent materials.

What are the advantages of vacuum harrow dryer:
     (1) Adaptability: Widely used, due to the use of rake vacuum dryer jacket heating, high vacuum exhaust, so almost all the different nature, different state of the material are adapted to, especially adapted to easy to explode, easy to oxidise, paste material drying.
     (2) Good product quality: Because of the drying process, the rake teeth are constantly rotating positively and negatively, the dried materials are stirred evenly, avoiding the overheating of the materials, and the moisture is easy to escape, and the shell gets the products with low temperature. Due to the fine particle size of the product, it can be packed without crushing.
     (3) Small steam consumption: Because the vacuum harrow dryer uses steam to pass into the jacket, using latent heat to heat the material, the amount of steam consumed to deal with each kilogram of finished product is small, generally 1.3-1.8kg of steam.
     (4) According to the different characteristics and requirements of the dry materials, the sealing system of the dryer can choose two kinds of packing seals and mechanical seals, and the special design ensures the sealing and service life.


     (5) Easy to operate: Vacuum harrow dryer is easy to operate, with less staff and low labour intensity. Due to the loss of material escape is reduced, improve environmental health. The main disadvantages of vacuum harrow drying are: complex structure, expensive. Because it is intermittent operation, drying time is long, low output; and because it is not easy to clear the material, so it is not suitable for the production of frequently changing varieties. At the same time, in order to ensure the vacuum degree, must often maintain the maintenance of the vacuum device.