Sliding Closure for a Metallurgical Vessel

Abstract

A sliding closure for a metallurgical vessel comprises an elongated refractory slide plate ( 2 ), which is exchangeably arranged in a metal frame ( 1 ) and the longitudinal direction (L) of which corresponds to the direction of displacement of the sliding closure. Also provided are means ( 3 ) for bracing the slide plate ( 2 ) in the metal frame ( 1 ), which comprise a wedge shoe ( 10 ) that is loaded by a spring ( 9 ) and can be adjusted transversely in relation to the direction of displacement of the sliding closure. This wedge shoe ( 10 ) is operatively connected to a counterpart ( 11 ), which can be brought into connection with the slide plate ( 2 ) and acts on the slide plate ( 2 ) in its longitudinal direction (L). The oscillating movements of the movable slide plate taking place during operation are absorbed and the bracing device ensures satisfactory bracing of this slide plate at any time.

1 . A sliding closure for a metallurgical vessel comprising an elongated refractory slide plate ( 2 ), which is exchangeably arranged in a metal frame ( 1 ) and the longitudinal length (L) of which corresponds to the direction of displacement of the sliding closure, with means ( 3 ) for bracing the slide plate ( 2 ) in the metal frame ( 1 ), characterised in that the means ( 3 ) for bracing the slide plate ( 2 ) comprise a wedge shoe ( 10 ) that is loaded by a spring ( 9 ) and can be adjusted transversely in relation to the direction of displacement of the sliding closure, which is operatively connected to a counterpart ( 11 ), which can be brought into connection with the slide plate ( 2 ) and acts on the slide plate ( 20 ) in its longitudinal direction (L). 
   
   
       2 . The sliding closure according to  claim 1 , characterised in that the counterpart ( 11 ) is displaceably moved in the metal frame ( 1 ) in the longitudinal direction of the slide plate ( 2 ), the wedge shoe ( 10 ) acing on the counterpart ( 11 ) via the wedge surface ( 18 ) and via guide surfaces ( 32 ) being supported on a transverse wall ( 21 ) of the metal frame ( 1 ) arranged transversely to the longitudinal direction of the slide plate ( 2 ). 
   
   
       3 . The sliding closure according to  claim 2 , characterised in that the counterpart ( 11 ) is moved displaceably in side walls ( 16 ,  17 ) of a substantially U-shaped recess ( 20 ) of the metal frame ( 1 ), and the wedge shoe ( 10 ) is supported on the transverse wall ( 21 ) connecting the side walls ( 16 ,  17 ) of the recess ( 20 ). 
   
   
       4 . The sliding closure according to  claim 2 , characterised in that the wedge shoe ( 10 ) is in screw connection with an adjustable screw ( 26 ) moved transversely to the longitudinal direction (L) of the slide plate ( 2 ) in an opening ( 25 ) of the metal frame ( 1 ) and by means of which it can be adjusted against the force of the spring ( 9 ) and the counterpart ( 11 ) can thus be brought into a position releasing the slide plate ( 2 ). 
   
   
       5 . The sliding closure according to  claim 4 , characterised in that in order to adjust the wedge shoe ( 10 ) against the force of the spring ( 9 ) the adjustable screw ( 26 ) screwed into the wedge shoe ( 10 ) can be manipulated in a direction of rotation until a screw head ( 29 ) comes to rest on a ledge surface ( 30 ) of the opening ( 25 ), and that upon manipulating the adjustable screw ( 26 ) in the other direction of rotation the wedge shoe ( 10 ) is adjustable in the direction of force of the spring ( 9 ), upon laying the counterpart ( 1 ) on the slide plate ( 2 ) the latter being braceable by the spring force while lifting the screw head ( 29 ) from the ledge surface ( 30 ). 
   
   
       6 . The sliding closure according to  claim 4 , characterised in that the adjustable screw ( 26 ) is screwed into a threaded hole ( 27 ) of a pin ( 28 ) inserted into the wedge shoe ( 10 ) and arranged at right angles to the adjustable screw ( 26 ). 
   
   
       7 . The sliding closure according to  claim 4 , characterised in that the spring ( 9 ) acting on the wedge shoe is arranged co-axially to the adjustable screw ( 26 ) and is supported between the wedge shoe ( 10 ) and one of the side walls ( 16 ,  17 ) of the substantially U-shaped recess ( 20 ) of the metal frame ( 1 ). 
   
   
       8 . The sliding closure according to  claim 1 , characterised in that the set angle of the wedge shoe is between 3 and 15°.