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The authors indicate that the failure of hydraulic systems of shearers can drop greatly, its’ reliability and service life can be increased by the use of a field oil contamination analyser and filter device to control the oil contamination of the hydraulic systems of shearers. Experimental provement of silting theory contamination analyser are carried out.The filter effect of portable hydraulic driving oil filter model YLJ 21 is examinationed in laboratory and field experiment. From January to August 1992, on site experimental research using a silting theory contamination analyser and oil filter model YLJ 21 to control the oil contamination was carried out in the Datong Coal Mining Bureau.
The authors indicate that the failure of hydraulic systems of shearers can drop greatly, its’ reliability and service life can be increased by the use of a field oil contamination analyzer and filter device to control the oil contamination of the hydraulic systems of shearers. Experimental provement of silting theory contamination analyzer is carried out. The filter effect of portable hydraulic driving oil filter model YLJ 21 is examinationed in laboratory and field experiment. From January to August 1992, on site experimental research using a silting theory contamination analyzer and oil filter model YLJ 21 to control the oil contamination was carried out in the Datong Coal Mining Bureau.