Tap hole plugging device
AssigneePaul Wurth S.A.
InventorsVictor Kremer, Emile Lonardi, Philippe Malivoir
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Abstract
Device for plugging a tap hole comprising an expulsion piston fitted in a plugging chamber, a first double-acting hydraulic actuator positioned behind the piston and a first channel passing through the piston for the passage of a piercing rod, and the first actuator. The device further comprises a second double-acting hydraulic actuator positioned behind the first actuator, equipped with a second channel for the passage of a rod, a control means for imposing a to-and-fro movement on the second actuator, and a first gripping means movable by the second actuator. This first gripping means makes it possible to grip and release a rod in order to push it, by successive travels, through the two channels in the direction of the plugging nose-piece.
Claims13
Apparatus for plugging a tap hole comprising:
- an elongated housing;
- a plugging nose-piece at one end of said housing, said plugging nose-piece having a discharge orifice, and said plugging nose-piece having a plugging axis;
- a first chamber in said housing for receiving tap-hole clay;
- an expulsion piston in said plugging chamber for the expulsion of the tap-hole clay;
- first actuator means positioned in said housing along said plugging axis, said first actuator means being connected to said expulsion piston so as to be able to move said expulsion piston in the first chamber between a rear position and the plugging nose-piece, and vice versa;
- first control means for causing movement of said first actuator means and said expulsion piston;
- a first channel for the passage of a piercing rod, said first channel passing through said expulsion piston and said first actuator means, said first channel being along said plugging axis;
- second actuator means positioned in said housing along said plugging axis, said second actuator means having a second channel for the passage of a piercing rod, said second channel being along said plugging axis;
- second control means for causing said second actuator means to move between a rear end-of-travel position and a front end-of-travel position and vice versa;
- and
- first gripping means for gripping and releasing a piercing rod introduced into said second channel, said first gripping means being carried by said second actuator means and being moved along said plugging axis by said second actuator means to push the piercing rod, by successive travels of the said second actuator means between its rear end-of-travel position and its front end-of-travel position, along the plugging axis through the said second channel and the said first channel in the direction of the plugging nose-piece.
Dependencies are inferred from the claim text.