Tap hole plugging gun for metallurgical ovens

Abstract

The taphole plug gun for metallurgical furnace, comprises a pressure cylinder (2), which is suited for the reception of clay masses and has a lockable filling opening (3) for the mass and a compaction ram for pressing out the clay mass from a mouthpiece of the pressure cylinder pressed against the taphole of the furnace, and a pivotable safety flap (4) for locking the filling opening of the pressure cylinder for the clay mass. The safety flap comprises a stop (8) for the compaction ram, where the stop is swiveled during opening the flap for braking unintentional forward stroke of the ram. The taphole plug gun for metallurgical furnace, comprises a pressure cylinder (2), which is suited for the reception of clay masses and has a lockable filling opening (3) for the clay mass and a compaction ram for pressing out the clay mass from a mouthpiece of the pressure cylinder pressed against the taphole of the furnace, and a pivotable safety flap (4) for locking the filling opening of the pressure cylinder for the clay mass. The safety flap comprises a stop (8) for the compaction ram, where the stop is swiveled during opening the flap for braking an unintentional forward stroke of the compaction ram for pre-compacting and ejection of the clay mass in the cylinder chamber (9) of the pressure cylinder and is swung out during closing the flap from the cylinder chamber. A roller segment is directed towards outside in the locking position of the safety flap towards outside on one of the long sides of the safety flap that is arched corresponding to the cover of the pressure cylinder and that interferes in the locking position in the filling opening of the pressure cylinder for the clay mass in positive-locking manner. The roller segment is pivoted in open position of the safety flap in the cylinder chamber of the pressure cylinder and forms the stop for the compaction ram. The roller segment comprises a bearing bore for the swiveling axis of the safety clap parallel to middle axis of the pressure cylinder directed for the clay mass. The bearing bore is arranged in clevis at the cover of the pressure cylinder. A handle is arranged in the area of the other long side of the safety flap directed parallel to the middle axis of the pressure cylinder and a hook gripping to the handle is arranged for locking the safety flap in its locking position.

Description

technical field [0001] The present invention relates to a tap hole pluggun for a metallurgical furnace, the tap hole pluggun has a pressure cylinder for containing a filling material and a plugging piston for the filling material. The closed filling port and the plugging piston are used to press the filling material out from the mouthpiece of the pressure cylinder pressed against the outlet of the metallurgical furnace. Background technique [0002] An outlet plug lance of the type disclosed in DE 30 07072 C2 is used to close the openings of the outlets of reduction furnaces or melting furnaces, such as blast furnaces or blast furnaces for obtaining crude iron, and for melting non-ferrous metals, ferroalloys, etc. Low shaft furnace. During the plugging operation step, the front of the plug gun is pressed against the furnace with high force using a pivot device, maintaining the contact pressure on the plug gun until the elastomeric filling pressed through the plug gun into t...

AI Technical Summary

Problems solved by technology

[0003] In known outlet plug guns, there is a danger during manual filling of the filler material into the cylinder cavity of the pressure cylinder due to incorrect handling by the melter or co-worker that the plugging piston can unintendedly be directed towards the pressure cylinder nozzle Smelter's hands and arms could be seriously injured

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