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在钢铁企业中,球磨机是一种使用普遍的机械设备。它是发电厂、耐火材料厂、炼铁厂及炼钢厂较大的噪声源。球磨机的噪声是由于滚筒内的金属球与筒壁衬板及被加工原料之间撞击而产生的机械噪声。滚筒转动时,筒内钢球沿筒壁衬板循抛物线方向运动,如图1。钢球与衬板及原料撞击和磨擦,使筒壁振动,产生强烈的撞击声,声音沿着衬板、筒壁向壁外辐射,成为球磨机的主要噪声源,如图2。
In the iron and steel industry, ball mill is a kind of universal mechanical equipment. It is a larger noise source for power plants, refractory plants, ironworks and steel mills. Ball mill noise is due to the drum within the metal ball and the cylinder liner and the processing of raw materials generated between the impact of mechanical noise. When the drum rotates, the steel ball in the drum moves along the wall lining board along the parabolic direction, as shown in Figure 1. Ball impact with the liner and the raw materials and friction, so that the cylinder wall vibration, resulting in a strong percussion sound along the liner, wall radiation to the wall to become the ball mill’s main source of noise, as shown in Figure 2.