我厂针对原来筛砂机存在的噪声大、效率低、机件易磨损的缺点,于1985年设计制造了一种筛砂机,见图1。设计时试图从以下三个方面予以改进:(1)由于铸造车间环境较差,手工铲砂时超负荷现象比较严重,所以机架及其他零件要有足够的刚度,同时可以降低噪声。(2)增加一条送砂胶带,把筛下的型砂送出机外或直接送入砂桶内。(3)对吊筛框装置进 I plant for the original screen sand there is noisy, low efficiency, easy wear parts, in 1985, design and manufacture of a sand screen machine, shown in Figure 1. At the time of design, attempts are made to improve the following three aspects: (1) Due to the poor environment of the foundry and the overload of manual shoveling, the frame and other parts should have sufficient rigidity and meanwhile reduce the noise. (2) Add a sand belt to send the sand out of the machine or directly into the sand bucket. (3) into the hanging screen frame device