| 摘要 |
<p>The subject invention is related to a gas injection device with back-flow leaking liquid discharge, comprising a chamber, a gas inlet conduit, a gas outlet conduit, and a liquid discharging conduit, wherein the gas outlet conduit and the liquid discharging conduit are provided with a check valve, respectively. When a gas is passed to the chamber through the gas inlet conduit, the check valve of the gas outlet conduit is open for the gas to be passed into a liquid and the check valve of the liquid discharging conduit is closed. While the gas has stopped injecting into the liquid, the check valve of the gas outlet is closed to prevent the liquid from back flow. The small amount of back-flow leaking liquid accumulated in the chamber can open the check valve of the liquid discharging conduit to discharge the leaking liquid from the chamber.</p> |
