Methanol injector for marine dual-fuel engine

The utility model discloses a marine dual-fuel engine methanol injector which comprises an upper end cover, a pressure regulating rod, an upper valve body, a needle valve seat, a lower threaded sleeve, an upper valve rod, a lower needle valve, an electromagnetic coil, a pressure regulating spring, an upper spring seat, an upper push rod and a lower needle valve rotating device, wherein the upper push rod comprises a clutch mechanism and a rotating mechanism; the clutch mechanism comprises an upper end face ratchet wheel, a lower end face ratchet wheel and an upper end face ratchet wheel reset spring, the upper end face ratchet wheel is in clearance fit with the lower end of the pressure adjusting rod, the lower end face ratchet wheel is fixed to the top end of the lower needle valve, the plane bearing is supported at the upper end of the upper push rod, and the pressure adjusting spring is supported between the upper spring seat and the plane bearing. The upper end face ratchet wheel reset spring is supported