Belt Dryer
refers to a kind of continuous drying equipment for batch
production. This belt dryer is for drying products such as
pigments, foodstuffs and chemical or pharmaceutical products.
This belt dryer is composed of several independent zones. Each
zone includes circulation fan, heating device and fresh air
system for independent use or for sharing. Operation data such as
the quantity of drying medium, temperature, circulation volume of
off gas etc. could be controlled separately. The belt dryer is
easy in operation with no leakage of powder during drying process
due to the sealed chamber.
Working
Principle
Products
are put on the conveying belt. The belt is made of stainless
steel screen and is fixed on the brace rod. Stainless steel
baffler plates are also furnished at both sides of the belt to
prevent leakage of the products. Belt will be moved inside the
dryer by motor. Belt dryer is composed of several independent
heating zones which could be further divided into two or more
drying sections with different air volume, heat exchange area and
air-passing mode. In the first section, circulation air speed and
temperature should be higher with bigger heat exchange area, and
air will be passed through products from down to up because in
the 1st section, the product has large moisture content and is
heavy. The second section is for drying products with less
moisture content and weight. In this section, hot air will be
passed from up to down. The temperature of each zone will be
automatically controlled. Products will be collected by hopper
after belt dryer and will be discharged by screw
discharger.
