Highly Efficient Fluid Injection Apparatus

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PURPOSE : A highly efficient fluid injection device is provided to be economical and increase soil remediation efficiency by reducing consumption of a fluid for soil remediation, and be capable of smoothly injecting the fluid into soil by preventing loss of pressure. CONSTITUTION : A highly efficient fluid injection device comprises : a hydraulic pressure generating unit positioned on the surface of the earth; an extension rod(10) which is formed in an upper part, is inserted into soil, is extendable, and is hollow; an expansion part(20) which is connected to a lower portion of the extension rod such that the expansion part is in communication with the extension rod, and which is radially expanded by the hydraulic pressure generating unit to prevent a fluid moved into soil from moving upward; and an injection rod(30) which is extendably connected to a lower portion of the expansion part and has a plurality of injection parts circumferentially formed such that the injection parts are vertically spaced apart from one another in a predetermined distance to discharge the fluid by a hydraulic pump. The expansion part comprises clamping parts, an insertion part, an injection hole(23), an expansion ring(24) and a fluid injection pipe(25). © KIPO 2006