Patent ID: 7455201
Filing Date: 2008-11-25
Classification: B22D

Abstract:
1. A slide gate valve unit comprising: a fixed plate combined with a base frame secured to the lower surface of the bottom wall of a molten metal container; a slide case supported for sliding under the fixed plate, internally provided with a slide plate and suspending a shoot nozzle; and a drive means for controlling the discharge of a molten metal by moving the slide case so as to align a nozzle hole formed in the slide plate with a nozzle hole formed in the fixed plate and so as to disconnect the nozzle hole of the slide plate from the nozzle hole of the fixed plate; wherein right and left pressing members having a U-shaped cross section receive protrusions protruding from sides of the base frame and the lower surfaces of side parts of the slide case, elastic members are extended between upper parts of the pressing members and the upper surfaces of the protrusions of the base frame and side parts of the slide case are supported on the upper surfaces of the lower parts of the pressing members, and the resilience of the elastic members pushes the pressing members upward so that the slide case is pushed upward by the lower parts of the pressing members to press the sliding surface of the sliding plate against the sliding surface of the fixed plate by a predetermined pressure.