US 11,654,480 B2
Sliding closure for a metallurgical vessel, preferably a distributor vessel for a continuous casting facility
Beat Heinrich, Zurich (CH); and Thomas Amstutz, Sins (CH)
Assigned to Refractory Intellectual Property GmbH & Co. KG, Vienna (AT)
Appl. No. 17/255,752
Filed by Refractory Intellectual Property GmbH & Co. KG, Vienna (AT)
PCT Filed Apr. 23, 2019, PCT No. PCT/EP2019/060299
§ 371(c)(1), (2) Date Dec. 23, 2020,
PCT Pub. No. WO2020/001825, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 18179932 (EP), filed on Jun. 26, 2018.
Prior Publication US 2021/0268581 A1, Sep. 2, 2021
Int. Cl. B22D 41/24 (2006.01); B22D 41/34 (2006.01); B22D 41/40 (2006.01)
CPC B22D 41/24 (2013.01) [B22D 41/34 (2013.01); B22D 41/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A slide closure for a metallurgical vessel having an upper inner sleeve, comprising:
a housing fastenable to a bottom of the vessel, the housing comprising a cover and an insertion frame,
an upper closure plate in the cover of the housing, the upper closure plate being below the upper inner sleeve and having an opening alignable with an outlet of the upper inner sleeve,
a lower closure plate in the insertion frame of the housing, the lower closure plate being below the upper closure plate and having an opening,
a displaceable closure plate longitudinally displaceable between the upper closure plate and the lower closure plate, the displaceable closure plate having an opening selectively alignable with the opening in the upper closure plate and the opening in the lower closure plate to operatively provide a flow channel from the upper inner sleeve through the lower closure plate,
a first compensation unit for tensioning the upper, lower and displaceable closure plates against one another, the first compensation unit comprising a first set of spring arrangements that act on a tensile load between the cover and another part of the housing, and
a second compensation unit for pressing the upper, lower and displaceable closure plates in an upward direction toward the upper inner sleeve, the second compensation unit comprising a second set of spring arrangements that press the insertion frame in a direction toward the lower closure plate, and
wherein the cover is at a top of the housing and the insertion frame is on a bottom of the housing, the cover and the insertion frame being separate from one another.