| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid injection gun capable of selectively injecting a liquid to respective levels of liquid in a vessel. SOLUTION: A nozzle 20 capable of changing the projecting quantity is provided at a base part 10, a cylinder part 151 is provided along the axis direction of the nozzle 20 at the base part 10, a 1st stopper 153 is provided at a middle part in the height direction of the cylinder part 151, the upper end and the lower end are respectively used as a 2nd stopper part 133 and a 3rd stopper 155, a fixed piston 25a fixed to the nozzle 20 and a movable piston 30 to freely slide to the nozzle 20 are housed in the cylinder part 151 to be movable and air supply holes 156, 157 and 158 for selectively pressing each piston 25 and 30 to both directions by air are provided at the base part 10. The liquid is injected to a prescribed level of liquid by selectively changing the positions of both the pistons 25 and 50 corresponding to the supply position of air and changing the height position of the lower end of the fixed piston 25, that is, three positiond of the nozzle 20. COPYRIGHT: (C)2004,JPO&NCIPI
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