无锡建材仪器机械厂铸造车间原来的除尘系统除尘效果不理想,主要存在下列问题:1.风机出口加上电动机等产生的噪声达110aB(A),距风机20米处有一幢办公楼,严重影响办公、开会学习和职工身体健康。2.风机出口排出粉尘严重,周围树叶上、窗户,办公桌上均是层层灰尘。3.每年要调换风机2～3台,电机要修理两次,维修费用8600元。 The main problems of the dust removal system in the foundry workshop of Wuxi Building Material Instrument & Machinery Factory are as follows: 1. The noise generated by the blower outlet plus the motor reaches 110aB (A), and there is an office building 20 meters away from the fan, which seriously affects Office, meeting to learn and staff health. 2. Fan exit serious dust emissions, around the leaves, windows, desk are layers of dust. 3 to replace the fan 2 to 3 units each year, to repair the motor twice, the maintenance cost of 8600 yuan.