PURPOSE: A slide gate of a compression release system is provided to improve convenience of operation, and to increase confidence of functions maintaining surface pressure under driving. CONSTITUTION: A slide gate of a compression release system includes a base frame(110), a suspension frame(120), a slide frame(130), and a surface pressure spring(150). The slide gate of the compression release system further includes a slide wheel unit(160), an oblique block(170), and a sliding protrusion(180). A first valve plate is mounted on the bottom of the base frame. The suspension frame is attached on the base frame. A second valve plate is mounted on the top of the slide frame. The slide frame is installed at the suspension frame and the base frame inside.

The present invention concerns a sliding gate valve plate for a molten metal gate valve having: - an upper surface, - a lower surface, said upper and lower surfaces being planar and parallel to one another, - a connecting outer surface connecting the upper surface to the lower surface and - a pouring channel fluidly connecting the upper surface (2) to the lower surface (3), said pouring channel having a pouring axis of symmetry (Xp), wherein the upper and lower surfaces have geometries defined by the following ratios: R1 = LOl1/LOu1, comprised between 50 and 95%, preferably between 57 and 92%, more preferably between 62.5 and 90%, R2 = LOl2/LOu2, comprised between 50 and 95%, preferably between 57 and 92%, more preferably between 62.5 and 90%, R3 = LAl1/LAu1, greater than or equal to 75%, preferably greater of equal to 90%, more preferably greater of equal to 95%, R4 = LAl2/LAu2, greater than or equal to 75%, preferably greater of equal to 90%, more preferably greater of equal to 95% LOu1 and LOu2 are two segments meeting at the pouring axis of symmetry, Xp, and which together form the upper longitudinal extent, LOu, defined as is the longest segment connecting two points of a perimeter of the upper surface and intersecting the pouring axis of symmetry (Xp); LAu1 and LAu2 are two segments meeting at the pouring axis of symmetry, Xp, and which together form the upper latitudinal extent, LAu, defined as the extent normal to and intersecting both the pouring axis of symmetry, Xp, and the upper longitudinal extent, and similarly, LOl1 and LOl2 are two segments meeting at the pouring axis of symmetry, Xp, and which together form the lower longitudinal extent, LOl, defined as is the longest segment connecting two points of a perimeter of the lower surface and intersecting the pouring axis of symmetry (Xp); LAl1 and LAl2 are two segments meeting at the pouring axis of symmetry, Xp, and which together form the upper latitudinal extent, LAl, defined as the extent normal to and intersecting both the pouring axis of symmetry, Xp, and the lower longitudinal extent.

Sliding gate valve plate

The invention discloses a steel-ladle sliding gate nozzle mechanism achieving uniform pressure construction. The steel-ladle sliding gate nozzle mechanism comprises a base body, wherein an upper sliding plate is arranged in the base body through a jacking device, a connecting rod is connected to the top of the base body through a supporting sleeve, and a first oil cylinder is connected to the connecting rod through a bracket; a second oil cylinder is connected to the bottom of the base body, and an upper gate nozzle is connected to the upper sliding plate; a support body is axially connected to the base body, and a sliding block body is arranged in the support body through a sliding block ejector; first springs are fixed to the support body through spring pull rods and a spring supportingplate, and the spring pull rods make contact with the base body through rail wheels. A rail matched with each rail wheel is arranged on the base body, a lower sliding plate is arranged in the slidingblock body, a lower gate nozzle is arranged on the lower sliding plate, and a lower gate nozzle sleeve is arranged on the lower gate nozzle. According to the steel-ladle sliding gate nozzle mechanismachieving uniform pressure construction, the defects in the prior art can be overcome, the stability of mud seams is guaranteed, the safety of steelmaking is improved, and potential safety hazards areavoided.

Steel-ladle sliding gate nozzle mechanism achieving uniform pressure construction

The present invention relates to a device to prevent loosening of surface pressure of a slide gate, capable of preventing surface pressure applied between fixed and slide plates from being unintentionally loosened by vibration and the like. According to the present invention, the device comprises a spacer block disposed in a slide gate, which is installed in a ladle to adjust a flow rate of molten metal supplied to a tundish, to be hinge-fixed to be fixed and supporting plates with a stopper shaft when the fixed plate is in surface contact with the slide plates, so as to clamp the fixed and slide plates in order to maintain surface pressure. The stopper shaft is restricted in a hinge-fixed state while receiving outward elastic force of an elastic member. Accordingly, the spacer block is maintained in a clamped state.

Loose preventing apparatus of surface pressing for slide gate

Slide gate using a compressive-release machine

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Slide gate using a compressive-release machine

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Sliding gate valve plate

Steel-ladle sliding gate nozzle mechanism achieving uniform pressure construction

Loose preventing apparatus of surface pressing for slide gate