S150型气动砂轮是常用的打磨工具,在工作时发出很大的噪音。长期使用的直接操作者都患有不同程度的耳聋,同时对工作环境产生严重的噪声污染。因此,不少单位制作了不同型式的气动砂轮消声器。如上海环保局推广的抗性消声器;西安劳动局推广的迷宫式消声器等。这些消声器都具有一定的消声效果,但均未对砂轮装上消声器后功率消耗作出分析。我们先是仿造上海环保局推广的抗性消声器,因 S150 pneumatic grinding wheel is commonly used grinding tools, make a lot of noise at work. Long-term use of direct operators are suffering from varying degrees of deafness, while the working environment has a serious noise pollution. Therefore, many units made different types of pneumatic wheel muffler. Such as the Shanghai Environmental Protection Agency to promote the resistance muffler; Xi’an Labor Bureau to promote the labyrinth muffler. These mufflers have a certain noise reduction effect, but did not analyze the power consumption of the wheel fitted with a muffler. We first imitate the Shanghai Environmental Protection Agency to promote the resistance muffler, because