梯溜筛阳泉矿务局机电总厂研制出一种用于原煤分级筛选的梯溜筛（专利号：９４２０６６５３．７），它解决了现有的原煤分级筛选机经常出现的＂糊网＂或堵塞网孔的问题，特征是底座与支架一端通过销铰接，另一端通过销铰接有调整筛面陡度的支撑装置，筛体的上层筛面和下层... Elevators ladder Yangquan Mining Bureau Machinery and Electrical Plant developed a sieve for the classification of raw coal slides sieve (Patent No .: 94206653.7), which solved the existing coal grading machine often appear “paste net” or The problem of blocking the mesh is characterized in that one end of the base and the bracket is hinged by a pin, the other end is hinged with a support device for adjusting the steepness of the screen surface by the pin, the upper sieve surface and the lower layer of the sieve body ...