公开(公告)号：US20020125349A1

公开(公告)日：2002-09-12

申请号：US10092607

申请日：2002-03-08

Applicant: ITW GEMA AG

Inventor： Hanspeter Michael

IPC: B05B005/00

CPC classification number: B05B5/032 ,  B05B5/1608

Abstract: The invention relates to a high-voltage powder spray gun, in particular for spraying metallic powders. The rear terminal segment (60) of a powder tube (38) and the front terminal segment (58) of a hookup tube (56) are inserted far enough in axial and sealing manner to subtend between their overlap ends (69, 78) a powder-tight, electrically insulating expanse (76) to preclude electrical leakage currents. An electrically conducting bush (42) runs over the outer overlap end (78) of the hookup-tube/powder-tube connection to shunt any electric charges that might issue at the outer overlap end (78) between the hookup tube (56) and the powder tube (38). This powder spray gun preferably also is fitted with an electrically grounded shielding sheath (90), preferably a helical compression spring, which is configured radially away above the outer overlap end (88), said sheath being configured between the rear terminal segment of the hookup tube (56) and the front end of powder hose (84) slipped over said rear terminal segment. This configuration prevents arcing on the hand of an operator in the event electric charges were to issue between the powder hose (84) and the hookup tube (56).

Abstract translation: 本发明涉及一种高压粉末喷枪，特别是用于喷涂金属粉末。 粉末管（38）的后端子段（60）和连接管（56）的前端子段（58）以轴向和密封方式插入足够远以在它们的重叠端（69,78）之间对置 粉末密封，电绝缘（76），以排除漏电流。 导电衬套（42）在连接管/粉末管连接的外部重叠端（78）上延伸，以分流可能在连接管（56）和连接管（56）之间的外部重叠端（78）处发生的任何电荷 粉末管（38）。 该粉末喷枪优选地还配备有电接地屏蔽护套（90），优选地是螺旋形压缩弹簧，其被配置成径向地远离外部重叠端部（88），所述护套被配置在连接器的后端子段 管（56）和粉末软管（84）的前端滑过所述后端子段。 这种配置在粉末软管（84）和连接管（56）之间发生电荷的情况下，可以防止操作者的手电弧。