Plug part and socket part for releasably connecting a pipe bend of a water cooled welding torch with a hose assembly and connection device with such a plug part and socket part

摘要

The invention relates to a plug part (21) for releasably connecting a pipe bend (19) of a water cooled welding torch (7) with a at a hose pack (20) arranged in the socket part (34), comprising a cylindrical tube member (22) having an axially extending channel (23 ) for a welding wire (9) and a protective gas (5) and with at least two cooling channels (29, 30) for reciprocating return of a cooling liquid, and arranged with a rotatably on the tubular element (22) the cap nut (24) with an internal thread for connection with a corresponding external thread on the socket part (34) and such a female part (34). For the production of an optimal connection between the tube sheet (19) and tube package (20) is the mouth (4 6) of the one cooling channel (29) outside of the cylindrical tube element (22) and the mouth (461) of the other cooling channel (30) inside the cylindrical tubular element (22) and in the end piece (35) is arranged a connecting channel (42) between the at least two cooling channels (40, 40 ') of the socket part (34).