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我县一些大理石厂(矿)的产品之一是大理石经破碎后成为不同型号的“米石”。操作虽为半机械化,但设备简陋,工人劳动程度大并大部在半敞开的露天车间作业,防护条件也差,尘毒污染严重,对工人及周围人群的健康影响较大。笔者于一九八七年在县大理石矿与厂家一起对破碎米石车间密闭扇风式除尘系统进行了改造试点,取得了明显效果及经济效益。一、原粉碎除尘系统由轴流式扇风机、引风管和一个粉尘沉降室组成:选用二千瓦轴流式扇风机一台接在破碎口下方,经直径0.4、长2米、弯度为110度的引风钢管进入边长为0.6水、长为2米的引
One of the products of some marble factories (mines) in our county is that marble has become a different type of “rice stone” after being crushed. Although the operation is semi-mechanized, the equipment is primitive, the workers are labor-intensive and most of them operate in the semi-open open-air workshop. The protective conditions are also poor. The dust pollution is serious and the health of the workers and surrounding people is greatly affected. In 1987, the author carried out a pilot reform on the closed fan wind-type dedusting system in the broken stone workshop with the marble factory in the county and achieved remarkable results and economic benefits. First, the original crushing dust removal system consists of axial fan, induced draft tube and a dust settling chamber: the choice of two kilowatts of axial fan fan connected to the mouth below the broken mouth, the diameter of 0.4, length 2 meters, camber of 110 The degree of wind into the steel side of 0.6 water, length of 2 meters lead