| 摘要 |
The present invention pertains to a drying machine and particularly, pertains to a tunnel-type drying machine for drying and treating viscous materials such as sewage sludge. To this end, sludge is crushed and the cell membranes of the sludge are ruptured by rotating a screw device for conveying sewage sludge, which is injected into the drying machine, right and left and controlling the rotational speed thereof so as to apply impact. The sludge is subjected to resonance in the drying machine via a pipe heater and a microwave radiation device while the sludge is conveyed in the drying machine. In addition, a high pressure air-discharging and isolating pocket is provided such that the condensation force of water is weakened using ultrasonic waves which are generated by an ultrasonic wave device so as to increase the surface strength and to discharge the object to be dried to the outside of the drying machine. Therefore, required costs for maintaining conventional facilities and sites as well as energy may be reduced while obtaining increased efficiency compared to the prior art, such that the drying machine can be used industrially. |
