Principle of work:

◆The air steam passes through the surface of raw material only in traditional level chamber drier . The disadvantage is that the coefficient of heat transfer is low and the utilization factor is poor and the drying time so long . Moreover because of the defect of structure , it can not be in conformity with the requirements of “GMP” . In order to overcome the shortcoming , we designed and developed the penetrating air stream box type drier on the basis of absorbing abroad advanced technology . The principle of work is shown in the figure listed below ；

◆The fresh air is sucked through fan and then filterd through primary , secondary and high efficiency . Therefore the purification reaches to one hundred thousand grades . Through steam heat exchanger , the temperature of air is raised to certain temperature . The heated 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 centrifuge fan and the other is circle and heated still . In this way the purpose can be realized .

Features:

• 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 deteriouated and polluted during the period of re-circle and re-heating . It is in conformity with the requriemetns of “GMP” fully .

• Compared with laminar flow type oven , the dry capacity is higher . The thickness of raw material to be dried is more than times .

• The dry area is large and the efficiency is high . Compared with level flow type oven , the capacity is more 3-6 times . The cost is lower .

• It is suitable for all kinds of raw materials having the shape of granule of block drying .

• It is easy is operation and quick in clean and exchange and low in trouble .

• 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 .

• The heat source may be steam or electric heater .

Model

& Size

Dry amount

each time

(kg)

Equipped

power

(kw)

Steam

consume

Area

of heat

(m2)

Amount

of air

m3/h

Temperature

difference between

up and low

℃

Size of

drying
tray

Quantity
of
drying
tray

Weight

(kg)

Overall

dimen-sions