| 摘要 |
PURPOSE: An injection device for a fast-setting hardener having double pipes is provided to uniformly mix two kinds of grout materials injected into outer and inner pipes with each other. CONSTITUTION: An injection device for a fast-setting hardener having double pipes comprises a first nipple(110), an inner pipe(100), a second nipple(210), and an outer pipe(220). A first grout material is injected into the first nipple. The inner pipe is connected to the first nipple. A second grout material is injected into the second nipple. The outer pipe is connected to the second nipple. A rotation tip(230) is formed on the inner bottom of the outer pipe and simultaneously rotates the first and second grout materials. |
