Automatic backwash type electro-hydraulic reversing valve for thin coal seam hydraulic bracket

The invention discloses an automatic backwash type electro-hydraulic reversing valve for a thin coal seam hydraulic bracket. The automatic backwash type electro-hydraulic reversing valve for the thincoal seam hydraulic bracket comprises a valve body as well as a valve body liquid inlet, a valve body liquid return port, a backwash outlet and a plurality of electromagnetic pilot valves which are arranged on the valve body; multiple pairs of electro-hydraulic reversing valve core assemblies, a first backwash control valve core assembly, a second backwash control valve core assembly, one filter element assembly and one liquid return shutoff valve core assembly are arranged in the valve body; each electro-hydraulic reversing valve core assembly, each backwash control valve core assembly, the filter element assembly and the liquid return shutoff valve core assembly are arranged in respective valve cavity; and each electromagnetic pilot valve controls one pair of electro-hydraulic reversingvalve core assembly to act