Environment-friendly pressure regulating valve of gas nitriding furnace

The utility model relates to the technical field of nitriding auxiliary pressure regulating valves, and discloses an environment-friendly gas nitriding furnace pressure regulating valve which comprises a valve body, a fixing plate and a cross beam, the left side of the valve body is fixedly connected with the fixing plate, the top of the fixing plate is fixedly connected with a supporting rod, the top of the supporting rod is fixedly connected with a hole limiting rod, and the top of the valve body is fixedly connected with a limiting rod. The periphery of the limiting rod is movably connected with a cross beam, the periphery of the cross beam is movably connected with a nesting block, the nesting block is fast in nesting, the device assembling effect is improved, when the gas pressure in the gas nitriding furnace is increased to a certain value, the valve is driven to jack upwards, meanwhile, a first spring is compressed, at the moment, the gap between the valve and the valve body is increased, and the prima