工作原理及应用范围

直热式热风炉，是利用外界自然风在热风炉周壁循环预热后进入炉腔，在风机负压下进行工作的原理，以达到燃煤充分、节约能耗的效果，它主要应用于对产品外观要求不严格的热源行业。热风炉在风机的负压下，外界风由炉腔顶部进入炉腔，在炉腔内进行预热，进入炉膛，然后热空气进入回转滚筒。

   The directly heated air furnace applies the principle that the natural wind preheated firstly around the furnace bottom before entering the furnace chamber,works under the negative pressure of the fan,to get the effect of complete coal combustion and reducing energy consumption.It is mainly used in heat source industrywhich has no strict requirement for the product appearance.Under the negative pressure of fans,the outside wind enters the furnace and is preheated there before entering the hearth,then the hot air enters the rotary durm.

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