Discussion on the use of divider of mechanized coal sampling and sample preparation equipment
YANG Yong-cheng
YAN Shu-sheng
LU Ying
LOU Xin-hua
LI Shu-gang
Abstract：This paper discussed the importance of divider in mechanized coal sampling and sample preparation equipment and the reasonable division method which could ensure the division precision of divider,several existing typical types of irrational divider utilization methods were analyzed as well,and combined with GB/T 19494—2004 Mechanical sampling of coal and GB 474—2008 Method for preparation of coal sample, the notices in rotary divider and scraper divider utilization were indicated, which meant that the system errors caused by higher level feeding periodicity should be controlled,the various forms of full cross-section adoption should be ensured;every single machine of sampling and sample preparation system should be reasonably matched,and the process of sampling and sample preparation system should be optimized.Studies had shown that:a set of qualified divider should not only have a reasonable structure, but also have a reasonable matching for each single machine,therefore,the division error could be avoided obviously,and a smaller deviation and higher precision of sampling and sample preparation equipment could be ensured.
Keywords：coalmechanized coal samplingdividersampling and sample preparation systemprecisionsystem errors
Publication Date：2016-01-01
Pages：4( 8-11 )