铸件打箱后的旧型砂必须过筛,才能重新配用。干筛时尘土飞扬,喷水后砂子变牯容易堵塞网孔,用普通筛砂机筛不下来。为了改善劳动条件和提高生产率,我们试制成功一台“双震摆式筛砂机”。经一年半的使用,效果良好,解决了用机器筛湿砂的问题。工作原理该机器由一台1.1千瓦的电动机做动力,用三角皮带轮两级减速后,由偏心盘通过固定连杆带动筛子作双震摆运动,它的结构见示意图1。它综合 Casting sand after the old sand box must be sifted in order to re-use. When the dry sieve dusty, spray water after the sand becomes easy to plug the mesh, with ordinary sieve sieve down. In order to improve the working conditions and improve productivity, we successfully trial a “double-shock tilting sand screening machine.” After a year and a half of the use of good results, the problem of using machine sieve wet sand. Working principle The machine is powered by a 1.1 kilowatt electric motor. After decelerating with a V-belt pulley two stages, the eccentric disk drives the sieve to make double-double pendulum movement through a fixed connecting rod. Its structure is shown in the schematic diagram. It is integrated