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目前国内生产的鼓风机,对于冲天炉化铁均不理想。罗茨风机的风压高而风量小,离心风机的风量大而风压低,故只能按最低参数选取,因而一般选择较大型号,这不仅增添设备投资,搬运安装不便,使用噪音大,而且耗电量也较大。如一般2～3吨/时冲天炉用罗茨风机为7～8,马达功率31.5～55瓩,或用离心风机6～8,马达功率22～40瓩,甚至有用75瓩的。湖北柴油机厂设计制造的叶轮直径φ460(相当于41/2)离心风机,很适合2～2.5吨/时冲天炉使用,冷风熔炼最高达2.8吨/时,马达功率只有7瓩,使用13年只大修过一次。该机的特点是:风量风压配合较好,结构简单,重量轻,制造容易,耗电少,使用可靠。该机目前已在我省许多单位使用,地县工厂仿造的尤多,外省亦仿制不少,并有改进的不同型号。我省已建议有关部门定型生产。
Blowers currently produced in China are not ideal for cupola. Roots blower wind pressure is high and the air volume is small, centrifugal fan air volume and wind pressure is low, it can only be selected according to the lowest parameters, which generally choose a larger model, which not only adds equipment investment, handling and installation inconvenience, the use of noise, and Power consumption is also larger. Such as the general 2 to 3 tons / hour cupola Roots blower 7 to 8, the motor power of 31.5 to 55 瓩, or centrifugal fans 6 to 8, the motor power of 22 to 40 瓩, and even useful 75 瓩. Designed and manufactured by Hubei Diesel Engine Factory, the impeller diameter φ460 (equivalent to 41/2) centrifugal fan is suitable for 2 ~ 2.5 t / a cupola. The maximum cooling power is 2.8 t / h, the motor power is only 7 瓩, Overhauled once. The machine is characterized by: wind pressure with better, simple structure, light weight, easy to manufacture, less power consumption, the use of reliable. The aircraft is currently used in many units in our province, prefectural factory imitation more than the other provinces have a lot of imitation, and improved different models. Our province has suggested that the relevant departments stereotypes production.