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报道:局部扇风机是煤矿井下通风主要设备,广泛分布于井下巷道。在运转过程中产生强烈的气流噪声、机械噪声和电磁噪声,是煤矿井下主要噪声源,影响信号传递,危害职工健康。为此,采用沈阳市噪声控制设备厂生产的ZK-1-Ⅷ型消声器进行了治理,效果较好。经测试未治理局扇噪声为103dB(A),治理后为85dB(A)达到了国家卫生标准,未治理局扇噪声中、高频部分明显高出
Report: Local fan is the main equipment underground ventilation, widely distributed in underground tunnels. During operation, strong air flow noise, mechanical noise and electromagnetic noise are generated, which are the main noise sources in coal mines, affecting the signal transmission and endangering the health of workers. To this end, the use of noise control equipment factory in Shenyang City ZK-1-VIII muffler for governance, the effect is better. The tested fanless noises were 103dB (A) and 85dB (A) after treatment, meeting the national health standards. In the case of fanless noises of the government bureau, the high frequency part was significantly higher