Device for improving PSA hydrogen production yield and recovering carbon dioxide

The utility model relates to the technical field of hydrogen production equipment, in particular to a device for improving PSA (Pressure Swing Adsorption) hydrogen production yield and recovering carbon dioxide, which comprises hydrogen production equipment, a carbon dioxide collecting box is communicated with the inside of the hydrogen production equipment, a hydrogen delivery pipe is communicated with the inside of the hydrogen production equipment, and a plurality of pressure gauges are fixedly mounted in the hydrogen production equipment. A sealing structure is arranged on the surface of the hydrogen conveying pipe, the sealing structure comprises a sealing gasket, the surface of the sealing gasket is in sliding connection with the hydrogen conveying pipe, a pressing plate is fixedly installed on the surface of the sealing gasket, a plug pin is rotationally connected into the pressing plate, and the plug pin is in threaded connection with the interior of the hydrogen production equipment; and a round hole