在工业生产中,不进行吸声减噪处理的罗茨鼓风机,噪声是超过国家规定标准的。一般噪声强度达100～110分贝,对车间操作工人身心健康影响很大。罗茨鼓风机的噪声,主要来源于空气的振动,使之与机器相连接的管道产生切变应力,形成横波;在风机的出口,由于风机主动轮、从动轮的转子不间断地压缩流体,使其产生容变应力而振动,形成纵波。横波与 In industrial production, noise reduction is not carried out Roots blower noise is more than the national standard. General noise intensity of 100 to 110 dB, a great impact on the physical and mental health of workshop workers. Roots blower noise, mainly from the air vibration, so that the pipeline connected with the machine shear stress, the formation of shear waves; at the fan exit, due to the fan drive wheel, driven wheel rotor uninterrupted compression of the fluid so that Its capacity to produce stress and vibration, the formation of longitudinal waves. With the wave and