Portable carbon dioxide adapter system

A portable carbon dioxide adapter system, comprising:

• a first collar assembly for connecting to a liquid carbon dioxide source;
• a gasifying/flow adjusting assembly having one end connected to the first collar assembly, wherein the gasifying/flow adjusting assembly converts liquid carbon dioxide into gaseous carbon dioxide and has a volume-adjustable hollow inner cavity configuration;
• a second collar assembly connected to the other end of the gasifying/flow adjusting assembly;
• a drill bit assembly for opening the liquid carbon dioxide source;
• and
• an injection nozzle valve assembly for abutting against a gas inflow valve of a gas-injection object so as to inject the gaseous carbon dioxide;
• wherein, the drill bit assembly comprises a hollow drill bit holder and a drill-bit type opener having a spiral groove shape;
• and
• wherein, the injection nozzle valve assembly comprises a nozzle valve rod, an embedded sealing ring, an end sealing collar, an end locking cap, and a tension spring;
• the nozzle valve rod slidably passes through a central through-hole of the second collar assembly, a first end of the nozzle valve rod being provided with a hollow nozzle hole and a second end thereof being a solid screw and being provided in a diameter direction of the nozzle valve rod with a gas inflow hole in communication with the hollow nozzle hole;
• the embedded sealing ring is disposed closer to the first end than the gas inflow hole;
• the end sealing collar is mounted on the solid screw and is secured through the end locking cap;
• a first end of the tension spring is snapped to the end locking cap, and a second end thereof abuts against an end face of the gasifying/flow adjusting assembly.