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十五年来,苏联工业为煤炭矿井、矿山、冶金和化工联合企业成批生产了4.5型离心式通风机。该机风压达8000帕,风量达560米~3/秒。4.5型通风机是苏联第一批大型双吸设备之一,它具有工作轮直径为4.8米的重型转子,转速为120转/分,传动功率达4000千瓦。目前国内各工业部门使用约100台这种通风机。顿巴斯、沃尔库特、西乌克兰等煤矿,克里沃罗格和诺里尔斯克等金属矿山,切列波维茨、尼日涅塔吉尔、日丹诺夫及其他冶金厂,大型铸造、轧钢和化工企业均使用这种通风机。个别通风机的使用时间达20年。根据上述情况,可对这类机器的使用经验加以总结,这
For 15 years, the Soviet Union has produced batch-type 4.5 centrifugal fans for coal mines, mining, metallurgy and chemical conglomerates. The machine air pressure up to 8000 Pa, the air volume of 560 meters ~ 3 / sec. The Type-4 ventilator is one of the first large-scale double suction equipment in the Soviet Union. It has a heavy duty rotor with a work wheel diameter of 4.8 meters, a speed of 120 rev / min and a transmission power of 4,000 kilowatts. At present, about 100 sets of such ventilators are used by various industrial sectors in China. Such as coal mines such as Donbass, Volkut and Western Ukraine, metal mines such as Kryvo Roog and Norilsk, Cherepovets, Niger Tagil, Zhdanov and other metallurgical plants, large Foundry, steel rolling and chemical companies are using this fan. The use of individual fans up to 20 years. Based on the above, the experience of using such machines can be summarized