Noise reduction method of engine cylinder head sand shaker

The invention discloses a noise reduction method of an engine cylinder head sand shaker. The noise reduction method comprises the steps of (S1) building an outer anechoic chamber which is used for containing the sand shaker; (S2) laying a first sound absorption layer which is made of a first sound absorption material on a wall body of the outer anechoic chamber; and (S3) arranging sound absorption wedges on the wall body of the outer anechoic chamber. According to the noise reduction method of the engine cylinder head sand shaker, noise pollution which is generated during operation of the sand shaker can be reduced. 本发明公开了一种发动机缸盖震砂机的降噪方法，包括步骤：S1、建造用于容纳震砂机的外消声室；S2、在外消声室的墙体上铺设由第一吸音材料制成的第一吸音层；S3、在外消声室的墙体上设置吸声尖劈。本发明的发动机缸盖震砂机的降噪方法，可以减少震砂机工作时产生的噪音污染。