Description

1.Filter for damp discharge
2.Filter for fresh air
3.Heater
4.Drying dolly
5.Sub-high(high)
6.Flow leading piece
7.Centrifugal fan
8.Pressing mechanism for air suction

?The fresh air is sucked through fan and then filtered through primary, secondary and high efficiency. Therefore the purification reaches one hundred thousand grades. Through steam heat exchanger, the temperature of air is raised to certain temperature. The heated air is purified through filter again and then flows to every layer through left glow divider. It makes the hot air pass through the raw material to be dried evenly. The damp air is sucked from the inclined air channel under the drying tray. Parts of damp air are exhausted out off the oven through centrifugal fan and the other is circled and heated too. In this way the purpose can be realized.

Features  

1. Because the hot air of each circle is filtered through sub-high or high efficiency filter, it can avoid effectively that the carried raw material in the air is deteriorated and polluted during the period of re-circle and re-heating. It is in conformity with the requirements of "GMP" fully.
2. Compared with laminar flow type oven, the dry capacity is higher. The thickness of raw material to be dried is more than three times.
3. The dry area is large and the efficiency is high. Compared with level flow type oven, the capacity is more than **6 times. The cost is lower.
4. It is suitable for all kinds of raw materials having the shape of granule or block drying.
5. It is easy in operation and quick in clean and exchange and low in trouble.
6. There are air filters at inlet and outlet. The raw material to be dried can not be polluted and the quality of raw materials to be dried can not be damaged.
7. The heat source may be steam or electric heater.