Different classification of Rotating cylinder drying machine
Rotating cylinder drying machine is a rotary drum type drying device.Its structure is inclined rotating metal cylinder, cylinder is filled with different forms of heat exchange device.
Rotating cylinder drying machine classification:
1.According to the different heat transfer modes
(1)the direct heat transfer gas and the material in the barrel directly contact. This is a commonly used type. In the device, according to the material and flow direction can be divided into countercurrent and cocurrent
(2)the indirect heat transfer gas is not directly contacted with material. This dryer is also called double barrel type rotating cylinder drying machine. Hot gases through the inner tube, material passes through the annular space between the two cylinder
(3)compound heat transfer gas and material with direct contact heat transfer and indirect heat transfer in two cases. The drying machine is a kind of double barrel drum drying machine
2.According to the different structure types
(1)Single cylinder type
(2)Double tube type
Currently used is the direct heat transfer in single cylinder rotary drum dryer.
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