| 摘要 |
PURPOSE: An air jetting device is provided to efficiently remove impurities from the inside of a pipe by intensively jetting air to the inside of the pipe. CONSTITUTION: An air jetting device for removing impurities from the inside of a pipe is composed of a cylindrical case(1) having screw units(2), a piston type nozzle(3) for jetting air, a spring(6) disposed between the case and the nozzle, and a stopper(7). The rear of the nozzle is disposed at the inside of the case. The front of the nozzle protrudes outside the case. The spring returns the nozzle to the rear of the case after air jet. The stopper has a hole(8) through which the nozzle passes, and a screw hole coupled to the screw unit of the case.
|
