The invention discloses a penetrating type reverse-flow
drying device. The penetrating type reverse-flow
drying device comprises a
heat exchanger, an
air heater, a driving drum, a driven drum, a
sieve plate type conveying
steel belt and a dryer body, wherein an
air blower is connected with one side of the upper end of the
heat exchanger, the
air heater is connected with one side of the lower end of the
heat exchanger, the driving drum is connected with a double-stage cycloidal-pin wheel speed
reducer through a transmission chain, a material conveying
system is formed by the driving drum and the driven drum through the
sieve plate type conveying
steel belt, a feeding hopper is arranged at one end of the material conveying
system, a discharging hopper is arranged at the other end of the material conveying
system, the
sieve plate type conveying
steel belt penetrates through the dryer body, the dryer body is of a sealed structure, a plurality of axial fans are reasonably distributed on the top face and the bottom face of the dryer body, one side of the dryer body is connected with an outlet of the
air heater, the other side of the dryer body is connected with an suction fan, and an air outlet of the suction fan is connected with an inlet
pipe arranged at the bottom of the heat exchanger. The penetrating type reverse-flow
drying device is simple in structure and good in practicability, can achieve rapid and efficient drying of materials, is low in
energy consumption and has broad prospects.