Gas cylinder valve assembly

A gas cylinder valve assembly, comprising:

• a valve body and a valve rod, an end of the valve body is configured to connect with a gas cylinder, a first end face of the valve body facing the gas cylinder is configured with a fluid channel, a second end face of the valve body departing from the gas cylinder is defined with a cavity, the cavity is in communication with the fluid channel, a first stepped surface is provided at a connection between the cavity and the fluid channel, the valve rod comprises a limit section, a seal section and a drive section, the valve rod is connected with an elastic element, when the valve rod passes through the fluid channel and the cavity in sequence, the limit section and the seal section are located in the fluid channel, an elastic force of the elastic element drives an end face of the seal section facing the drive section to abut against the first stepped surface to form a first seal, the drive section is located in the cavity, an end of the drive section away from an end of the seal section protrudes from the second end face of the valve body, a circumferential outer wall of the valve rod in the cavity is defined with a cutting slot, and a breaking zone is formed at a position corresponding to the cutting slot,
• wherein the valve body is connected with a column, the column is coaxially connected to the end of the valve body, the end face of the column facing the valve rod is defined with a hole, the hole is in communication with the fluid channel,
• wherein a spring clamp is connected to the circumferential outer wall of the valve rod protruding from the valve body, and when a gas pressure drives the valve rod to slide, the end face of the seal section facing the drive section is detached from the first stepped surface and an end face of the spring clamp abuts against an outer wall of the valve body, thereby preventing an outer wall of the seal section from contacting the end face of the column facing the valve rod, such that the cavity, the fluid channel and the hole are in communication with each other,
• wherein, after the valve rod is broken at the breaking zone, the end face of the column facing the valve rod is configured to abut against the circumferential outer wall of the valve rod to form a second seal.