HIGH-PRESSURE WASHING GUN UNIT FOR REMOVING COATING FILM AND HOOD FOR HIGH-PRESSURE WASHING GUN FOR REMOVING COATING FILM

To provide a technique which decreases a scattering amount of washing water after ejection and/or a scattering amount of coating film pieces stripped from a basis material of a structure by collision with washing water, as the technique of stripping the existing coating film from the basis material of the structure by high-pressure ejection of washing water.SOLUTION: A hood 300 is mounted on a tip part of a washing gun 110 which performs high-pressure ejection of washing water and, thereby, a scattering amount of washing water which is ejected in mist state and/or a scattering amount of washing water which is brought into collision with a surface of the structure and is rebounded therefrom is decreased. The hood 300 has a tip part 304, and the tip part 304 is divided into a plurality of movable pieces 320 by a plurality of slits 310 which are extended in an ejection direction from a tip face thereof. Each movable piece 320 can be elastically deformed in a cantilever form. The washing gun 110 sweeps the surface of the structure in such a state that the hood 300 is closely attached to the surface of the structure in the whole circumference of the tip part 304.SELECTED DRAWING: Figure 21 【課題】洗浄水を高圧噴射して構造物の素地から既存塗膜を剥離して洗浄する技術であって、噴射後の洗浄水の飛散量および／または洗浄水との衝突によって構造物の素地から剥離された塗膜片の飛散量を減少させるものを提供する。【解決手段】洗浄水を高圧噴射する洗浄ガン１１０の先端部にフード３００を装着し、それにより、ミスト状で噴射された洗浄水の飛散量および／または構造物の表面に衝突してそこから跳ね返る洗浄水の飛散量を減少させる。そのフード３００は、先端部３０４を有し、その先端部３０４は、それの先端面から噴射方向に延びる複数本のスリット３１０によって複数の可動片３２０に分割されている。各可動片３２０は、片持ち状で弾性変形可能である。洗浄ガン１１０は、フード３００が先端部３０４の全周で構造物の表面に密着する状態でその表面を掃射する。【選択図】図２１