| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an injection gun for a liquid injection device, which can discharge into a storage container and recover any liquid having adhered to and left in the insides of a valve body and a nozzle part after the injection of liquid into the container, reliably and promptly by an air blow.SOLUTION: An injection gun for a liquid injection device comprises: a valve body 13 having a liquid injection port 12 in the side face part of an internal flow passage 11; a nozzle part 14 having a valve seat 15 and connected to the lower part of the internal flow passage 11 of the valve body 13; a stopper valve 16 supported vertically movably by the valve body 13 so that it closes at the dropping time to block the liquid flow to the nozzle part 14 and opens at the rising time to allow the liquid flow from the internal flow passage 11 to the nozzle part 14; and an air blow passage 18 for blowing the air into the nozzle part 14 while blocking the liquid flow to the nozzle part 14. The air blow passage 18 is vertically formed along the inside of the stopper valve 16, and an air blow port 25 to the air blow passage 18 is formed in the side face part of the valve body 13.</p> |
