Lance holder with lock for curved lances, in particular curved oxygen lances

摘要

Lance holder comprises: a clamping head (5) having a fixing part (6) bordering the lance tube and a sleeve-shaped clamping part (7) slidable on the fixing part; a sleeve sealing ring (8) clamping the lance tube and sealingly influencing through the fixing part; a backburn safety device (9); and a check valve applied via a cylindrical spring. The sleeve-shaped clamping part is extended in flow direction of the oxygen gas through an outer housing of the clamping head designed in the form of a sliding sleeve and forms a pre-fixing part. Lance holder comprises: a clamping head (5) having a fixing part (6) bordering the lance tube and a sleeve-shaped clamping part (7) slidable on the fixing part; a sleeve sealing ring (8) clamping the lance tube and sealingly influencing through the fixing part; a backburn safety device (9); and a check valve applied via a cylindrical spring. The sleeve-shaped clamping part is extended in flow direction of the oxygen gas through an outer housing of the clamping head designed in the form of a sliding sleeve and forms a pre-fixing part; or the lance holder comprises a lance manipulator leading the lance tube, which is provided with the sliding sleeve arranged at a distance and the pre-fixing part that is not mechanically connected to the fixing part. The fixing part is associated with at least three pressing elements in the form of beads and/or 2-5 additional beads. The sleeve-shaped clamping part is connected with the outer housing formed as a double sleeve and the pressure piston arranged in the outer housing. The double sleeve includes a multiple of pressure springs, annular pressure pistons, and a pressure chamber operative via a pressurizing medium connection.