Welding torch insert with gas mixer - has extra mixing nozzle directly, or spaced from, behind known injection nozzle

摘要

The mixing nozzle (6) behind the injection nozzle (1) has star slit rows (4), formed at its periphery, twice distanced and then continued in an offset manner. The nozzle threaded shaft is in working connection with an extra advance mixing chamber (5) via a cross-bore (7). Pref. the mixing nozzle has, at its front portion, a two-hand thread (3) at the periphery and/or centre bore. Behind the injection nozzle, pref. in the advance mixing chamber, is filled with a turbine-like mixing screw driven by the pre-mixed gas. The bore (8) of the welding nozzle (2) of the insert (9) may be widened up to a preset depth. ADVANTAGE - Improved mixing ratio of welding gas and oxygen, forming conventional flame conc..