| 摘要 |
PROBLEM TO BE SOLVED: To provide an injector for cleaning a polluted soil and having excellent operability. SOLUTION: This injector 1 is composed of a slender cylinder 2 and a nozzle 3 detachably installed in one terminal of the cylinder 2. The nozzle 3 is composed of a cylinder part 31 and a cone part 32 formed into a frustum shape. The cone part 32 is formed so as to have 75-105°angle in the side view. The nozzle 3 has a tip pilot hole 322 communicating with a tip nozzle hole 321 formed at the tip of the cone part 32, in the wall thickness of the cone part 32, and two or more side guide holes 324 communicating with two or more side nozzle holes 323 formed at an interval on the side surface of the cone part 32, at 45-90°from the extended direction of the nozzle 3, and formed in the wall thickness of the cone part 32. COPYRIGHT: (C)2005,JPO&NCIPI
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