| 摘要 |
A refilled type cask of butane gas widely used as a fuel of a portable gas burner is provided. The refillable butane gas cask includes a gas cask body having upper and lower parts sealed with upper and lower caps, an inlet pipe having an upper projecting portion welded to the center of the upper cap so as to protrude outside the upper cap and having a female screw formed at the interior of the projecting portion, a spring inserted into the inside of the inlet pipe, a nozzle safely seated at the upper portion of the spring, a packing inserted into the nozzle, a nozzle cap having a throughhole formed to be fitted into the upper portion of the nozzle and having a male screw engaged with the female screw of the inlet pipe at the lower portion of the nozzle, and a seating valve fitted around the upper portion of the projecting portion disposed at the upper portion of the inlet pipe. A disposable gas case can be configured to be refillable and a packing can be simply replaced separately when the packing is worn or deformed. Thus, environmental pollution arising due to used gas casks can be prevented and the resources can be efficiently recycled. |
