由苏联科学院北方分院矿业研究所和中央锡金属科学研究院研制的缝隙振动筛,适用于分级入磨的大块物体,其中一块的重量达5～6吨。筛子(图1)由主架1、安装在主架上的焊接的可动部分2,焊接的固定部分3组成。固定部分由螺钉固定在主架上,而可动部分借助螺钉4移动。金属的振动板5可以自由的装在固定架上,在下面配置振动器6,起动是通过换向传动轴7和电动机8。 Slit shale shakers, developed by the Institute of Mining Industry, Northern Branch of the Soviet Academy of Sciences, and the Central Institute of Tin Research, are suitable for grading large objects with a weight of 5-6 tons. The screen (Figure 1) consists of a main frame 1, a welded movable part 2 mounted on the main frame, and a welded fixed part 3. The fixed portion is fixed to the main frame by a screw, and the movable portion is moved by the screw 4. The metal vibrating plate 5 is freely mounted on the holder, and the vibrator 6 is disposed below, and is started by reversing the propeller shaft 7 and the motor 8.