PLASMA TORCH

摘要

PURPOSE:To eliminate a trouble in the attaching and detaching operation for a long period and to simplify the change of a head part by composing the connection part of a torch holder part and torch head part by a connection ring and hollow screw. CONSTITUTION:A connection ring 12 is advanced so as to cover the insulating cradle 22 of a head part 2 in a torch holder part 1 and torch head part 2 at the using time, then the socket 9 of the electric connection shaft of a shaft center and electric connection shaft 15 are engaged. Then with its turning it is integrated with its further advance by positioning a reaction gas feed connection pin 10 and pin socket 11. Thereafter the torch holder part 1 and torch head part 2 are strongly integrated by turning an attaching and detaching hollow screw 18 after the left-most end part of the torch holder part 1 reaching the attaching and detaching hollow screw part 18. The electrically sure connection state is thus obtd. and the water tightness and air tightness are sufficiently kept by the 0 ring 23 provided at each place as well and it becomes sufficiently resistant even for long time use.