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近几十年来国内许多铸造车间在采用风力吸送物料代替机械运送方面有了很大的发展。采用风力吸送,通常使用高压风机作为空气动力的来源。由于高压风机转速较高,风叶在高遮旋转时使空气强烈振动就产生了噪声。这种高声强的空气动力噪声不仅对人体的健康有害,而且给周围环境带来了不良影响。因此控制高压风机的噪声,具有重要的意义。一、高庄风机噪声的产生及其性质高压风机发出的噪声主要是由旋转的风叶造成的。风叶噪声是由旋转噪声和涡流噪
In recent decades, many domestic foundries have made great progress in adopting wind-driven materials instead of mechanical conveying. Use of wind suction, usually using high-pressure air blower as a source of aerodynamics. As the high-pressure fan speed is high, the fan blades in the high turn when the air is strong vibration caused noise. This high aerodynamic noise is not only harmful to the health of the human body, but also has an adverse effect on the surrounding environment. Therefore, the control of high-pressure fan noise, has important significance. A, high Zhuang fan noise generation and its nature High-pressure fan noise is mainly caused by the rotating fan. Fan noise is caused by the rotation noise and vortex noise