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针对煤炭粒度检测过程中存在的问题,提出了一种新筛分结构并对其结构进行设计采用特殊击打式筛板来减小筛分时间,并采用提高筛板网孔精度的方法提高筛分精度试验证明,对于5～100mm范围内的工业用煤,该系统可以在3～4min内同时筛分出6个粒级,筛分精度大于90%,筛分损失率小于2%,筛分原煤量达到100kg,能够满足工业煤炭粒度精确检验的需求。
Aiming at the problems existing in the process of coal particle size detection, a new screening structure was proposed and its structure was designed. Special screening sieve plate was adopted to reduce the screening time. Mesh sieve was used to improve the screening accuracy Sub-precision test shows that for the industrial coal in the range of 5 ~ 100mm, the system can simultaneously sieve 6 fractions within 3 ~ 4min, the screening accuracy is greater than 90%, the screening loss rate is less than 2%, and the screening The amount of raw coal to 100kg, to meet the needs of industrial coal particle size test.