Self-operated pressure regulating valve without packing structure

The utility model belongs to the technical field of valves. The utility model relates to a pressure regulating valve, in particular to a filler-free structure self-operated pressure regulating valve.The valve comprises a valve body, a valve seat, a valve core, a valve rod, a valve cover and an actuating mechanism, a middle flow inlet is formed in the valve body; the valve seat is fixedly connected to the middle flow inlet; the valve seat is provided with an adjusting flow inlet; the valve cover is fixedly connected to the upper end of the valve body; the valve rod is inserted into the valve cover; a sealing ring is arranged between the upper end of the valve cover and the valve rod; the valve element is arranged at the lower end of the valve rod and corresponds to the adjusting flow inlet, the upper end of the valve rod exceeds the valve deck, the upper end of the valve rod is sleeved with a spring seat, a spring seat groove is formed in the outer edge of the spring seat, an executingmechanism is arranged at