The invention relates to a sliding closure for a metallurgical vessel, comprising at least two fireproof closure plates (3, 4, 5) that can be pressed against each other and can each be clamped in a plate frame (7, 8, 9) by means of clamping jaws (10, 11, 12) that can be actuated by means of an eccentric unit (15). In order to actuate the clamping jaws (10, 11, 12), the eccentric units (15) are each provided with a rotary part (151), which has an upper and lower eccentric (28 and 29) and a centering pin (30), which is supported in the plate frame (7, 8, 9), wherein the one eccentric (28) acts on the clamping jaw (10, 11, or 12). Advantageously, the upper eccentric (29) interacts with a part (34) of the plate frame (7, 8, 9) in such a way that the upper eccentric is pressed against said part (34) in a clamping direction in the outer region (36) of the upper eccentric when the clamping jaw (10, 11, 12) is released. Thus, a plate exchange can be performed safely.

The invention relates to a sliding closure for a metallurgical vessel, comprising at least two fireproof closure plates (3, 4, 5) that can be pressed against each other and can each be clamped in a plate frame (7, 8, 9) by means of clamping jaws (10, 11, 12) that can be actuated by means of an eccentric unit (15). In order to actuate the clamping jaws (10, 11, 12), the eccentric units (15) are each provided with a rotary part (151), which has an upper and lower eccentric (28 and 29) and a centering pin (30), which is supported in the plate frame (7, 8, 9), wherein the one eccentric (28) acts on the clamping jaw (10, 11, or 12). Advantageously, the upper eccentric (29) interacts with a part (34) of the plate frame (7, 8, 9) in such a way that the upper eccentric is pressed against said part (34) in a clamping direction in the outer region (36) of the upper eccentric when the clamping jaw (10, 11, 12) is released. Thus, a plate exchange can be performed safely.

Slide closure for a vessel containing molten metal includes a slide housing and a slide unit that can be displaced longitudinally towards the slide housing, at least one refractory closure plate can respectively be inserted into the slide housing. The closure plates can be pressed against one another by the slide unit being braced against the slide housing. The closure plates can respectively be fixed or centered therein by a placement device having a displaceable positioning element. These placement devices are respectively designed such that upon bracing the slide unit against the slide housing, placing of the positioning element and clamping or centering of the respective closure plate is brought about therein. Therefore, despite easier operation, increased operating reliability is guaranteed because the closure plates are clamped and centered mechanically.

Slide closure for a vessel containing molten metal includes a slide housing and a slide unit that can be displaced longitudinally towards the slide housing, at least one refractory closure plate can respectively be inserted into the slide housing. The closure plates can be pressed against one another by the slide unit being braced against the slide housing. The closure plates can respectively be fixed or centered therein by a placement device having a displaceable positioning element. These placement devices are respectively designed such that upon bracing the slide unit against the slide housing, placing of the positioning element and clamping or centering of the respective closure plate is brought about therein. Therefore, despite easier operation, increased operating reliability is guaranteed because the closure plates are clamped and centered mechanically.

Slide closure for a vessel that operatively contains molten metal, comprising: a slide housing including a recess receiving a first refractory closure plate; a slide unit including an opening receiving a second refractory closure plate; wherein at least one clamping mechanism is arranged to start the clamping of the corresponding refractory closure plate via an actuation of the at least one clamping mechanism when the slide unit is displaced relative to the slide housing and the first and the second refractory closure plates are distant apart from each other, essentially before the first and the second faces of the respective first and the second refractory closure plates are in contact under pressure.

This connection device (D) comprises a shaft (17) which is mobile in translation, a piston (19) integral with the shaft (17), a sleeve (35) which extends around the shaft (17), this sleeve being movable between a rear position and a forward position, and locking members housed in the sleeve (35), each locking member being movable relative to the sleeve between a locking configuration and a release configuration. The shaft (17) is movable between a disconnected position in which the shaft (17) does not oppose movement of the locking members to their release configuration, and the sleeve (35) is in the forward position, and a connected position in which the shaft (17) opposes movement of the locking members into their release configuration and the sleeve (35) is in the rear position, through an intermediate position, in which the shaft (17) opposes movement of the locking members into their release configuration and the sleeve (35) is in the forward position.

This connection device (D) comprises a shaft (17) which is mobile in translation, a piston (19) integral with the shaft (17), a sleeve (35) which extends around the shaft (17), this sleeve being movable between a rear position and a forward position, and locking members housed in the sleeve (35), each locking member being movable relative to the sleeve between a locking configuration and a release configuration. The shaft (17) is movable between a disconnected position in which the shaft (17) does not oppose movement of the locking members to their release configuration, and the sleeve (35) is in the forward position, and a connected position in which the shaft (17) opposes movement of the locking members into their release configuration and the sleeve (35) is in the rear position, through an intermediate position, in which the shaft (17) opposes movement of the locking members into their release configuration and the sleeve (35) is in the forward position.

Slide gate for a metallurgical vessel, in particular a ladle, including a slide gate housing attachable to a metallurgical vessel, a head plate accommodated in the slide gate housing and having a passage opening for a metallic melt, a slide frame mounted in the slide gate housing so as to be displaceable in a direction relative to the head plate, and a slide plate accommodated in the slide frame and having a passage opening, characterized in that a device for compensating the contact pressure of the slide plate against the head plate is arranged between the slide gate housing and the slide frame, wherein the compensating device includes at least one carrier body mounted in the slide gate housing so as to be rotatable about at least one axis of rotation, and at least one spring element, via which the carrier body is coupled to the slide frame.

A sliding gate device includes a fixed plate fixed to a molten steel container, a sliding plate for opening/closing a nozzle hole, a sliding device moving a case holding the sliding plate, and a contact pressure control mechanism switching between a contact pressure applied state and a no-contact-pressure applied state for the fixed plate and the sliding plate. The contact pressure control mechanism has a support bar member moving relative to the fixed plate, a joining block tool switching between a joined state where the support bar member and the case cooperate with each other, and a joining-released state where the support bar member and the case do not cooperate with each other, and a spring member generating a force applying a contact pressure according to a position of the support bar member.

A sliding gate device includes a fixed plate fixed to a molten steel container, a sliding plate for opening/closing a nozzle hole, a sliding device moving a case holding the sliding plate, and a contact pressure control mechanism switching between a contact pressure applied state and a no-contact-pressure applied state for the fixed plate and the sliding plate. The contact pressure control mechanism has a support bar member moving relative to the fixed plate, a joining block tool switching between a joined state where the support bar member and the case cooperate with each other, and a joining-released state where the support bar member and the case do not cooperate with each other, and a spring member generating a force applying a contact pressure according to a position of the support bar member.