The suitable hot air furnace is very important factor for the efficiency of the wood shavings dryer/wood chips dryer, and it will influence the production efficiency of the wood shavings dryer/wood chips dryer significantly.

For the wood shavings dryer/wood chips dryer, no spark is allowed to go into the rotaryt cylinder, as the spark may cause explosion.

So, the hot air furnace at least to make sure that no spark goes into the rotary cylinder.

For the traditional hot air furnace which use coal as fuel, it is not suitable for the wood shavings dryer/wood chips dryer. Some suppliers suggest that put one heat exchanger inside the hot air furnace. The air is inside the heat exchanger, and the fire is outside the heat exchanger. The air is heated by the fire, and the air is clean air without spark. But the fatal problems of the heat exchanger is that it has a very low heat efficiency, and it will be a big loss of the energy.

Dingli Machinery developed one new type hot air furnace which solve the problem perfectly. Inside our hot air furnace, there are several rooms, some is for the burning of the fuel, some is for getrting rid of the spark, some are for gather the ash. The hot air with no spark goes into the wood shavings dryer. What is more, Dingli Machinery new type hot air furnace is much less expensive than the other type furnace in the market, and it is much more simple fine design.