我矿张思明同志创造了木箱筛分防尘器(如图所示).试验结果证明,既能防止粉尘飞场,也能保证筛分质量.它的制作方法很简单,根据筛面直径,作一无底木箱.其箱宽稍大于筛面直径,箱长大于宽度的一倍左右.然后在箱的前后壁上各钻二孔,横穿过两 Comrade Zhang Siming of our mine created a wooden box screening dust filter (as shown in the figure). The test results prove that it can not only prevent the dust flying field, but also guarantee the screening quality. Its production method is very simple, according to the diameter of the screen surface, As a bottomless wooden box, its box width is slightly larger than the screen surface diameter, and the box length is more than double the width. Then two holes are drilled on the front and rear walls of the box, across the two.