Greenhouse gas standard gas atmospheric pressure feeding system

The utility model discloses a greenhouse gas standard gas atmospheric pressurizing system which comprises an air filter, a steel cylinder to be pressed, a first adsorption pipe, a second adsorption pipe and a third adsorption pipe, the right side of the air filter is communicated with a connecting pipeline, and the left side of the air filter is movably sleeved with a filter plate; a limiting mechanism is riveted to the left side of the top of the air filter, a brushing and sweeping mechanism is riveted to the bottom of the air filter, the bottom end of a connecting pipeline communicates with a sampling pump through a three-way valve, the air outlet end of the sampling pump communicates with a water-vapor separator, and the air outlet end of the water-vapor separator communicates with a pressure check valve; and the air outlet end of the pressure check valve is communicated with an oil-water separator. Through cooperation of the support, the electric push rod, the movable plate, the servo motor and the cleani