| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To smoothly pass an injection nozzle and a hose for washing through the bent sections of a pipe even when there are several bent sections in the intermediate section of the pipe such as a drain pipe, a sewer or the like. <P>SOLUTION: In a nozzle device for washing the inside of the pipe in which the injection nozzle 1 is installed at the front end of the flexible hose connected to a high-pressure pump through a connecting fitting 3, wash water W is injected in the oblique backward direction from a plurality of orifices 1a formed to the outer circumferential surface of the injection nozzle 1, and propulsive force is generated in the injection nozzle 1 by the injection force while the inside of the pipe P is washed by wash water W injected from the injection nozzle 1, the front end section of the hose 2 and its neighboring section are covered with a guide pipe 4 being formed in a coil spring shape, having flexibility and being made of a metal, and one end section of the guide pipe 4 is fixed onto the connecting fitting 3 while the other end section of the guide pipe 4 is fixed onto the outer circumferential surface of the hose 2 through a fixture 6. <P>COPYRIGHT: (C)2003,JPO</p> |
