| 摘要 |
PURPOSE: A grouting injector is provided to shorten an injected section to the ground maximally, to prevent solidification of chemicals before washing, to simplify on washing works and to improve work efficiency on injecting chemicals. CONSTITUTION: The grouting injector comprises: a pipe coupling(110) provided with a male screw part(112); a grouting rod(120) provided with a female screw part(122); a connection pipe(130) provides with a hanging projection(131), a cross section(132), a hollow(133) and an extension part(135); a chemical blending pipe(140) provided with a hollow(141), a chemical inflow hole(142), upper and lower closed ring parts(143,144), a chemical exhaust hole(145), a chemical inflow hole(146), a blending passage(147) and a fitting pipe(148); a lower coupling(150) provided with a mixing hollow(152) and a chemical injecting hole(153); a piston rod(160) provided with a head part(161), a water way groove(164), a closed ring(165), a concave part(166) and a fixed ring(167); and a perforated pipe part(170) preventing the piston rod(160) from falling out downward and having a tip part(171).
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