| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid injection device capable of dynamically and easily forming a plurality of liquid layers.SOLUTION: A liquid injection device 1 includes: a liquid storing tank 30 having a liquid injection hole 37 at the bottom; a float 10; and a rod 20 standing on the float 10, capable of entering and exiting the liquid injection hole 37 from the lower part of the liquid storing tank 30, which leads a liquid L2 flowing out from the liquid injection hole 37 to the float 10 through the surface and injects the liquid through the float 10. The liquid L2 having a small specific gravity is injected on a liquid L1 having a large specific gravity, so that the momentum of inflow of the liquid L2 having a small specific gravity is suppressed. Consequently a layer of the liquid L2 having a small specific gravity can be formed on the liquid L1 having a large specific gravity. |
