High pressure gate valve
AssigneeSalina Vortex Corporation
InventorsLee Young, Shawn Werner
Life of this patent
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Abstract
A high-pressure gate valve for control of bulk materials includes a main body with an opening for passing bulk material, an upper body, a slideable blade, and lifting structure configured to raise the blade in a planar motion, perpendicular to the primary direction of travel and seal it against the upper body when the blade is extended. An actuating cylinder coupled with a rear edge of the blade extends and retracts the blade. A rear portion of the valve is enclosed to protect the rear edge of the blade, the actuating cylinder, and the coupling between the two.
Claims16
A gate valve for controlling the flow of material, said valve comprising:
- a housing defining an opening through which said material passes;
- a slideable blade moveable relative to said housing between an open position and a closed position to control material flow through said opening;
- lifting structure for raising said blade in a planar motion in a direction perpendicular to the direction of travel of the blade as said blade moves into its closed position whereby said blade sealingly engages said housing;
- and
- an actuator coupled with said blade to move said blade between said open and closed positions.
A seal for surrounding a component which component is subject to a force which is perpendicular to the seal, said seal being positioned in a rigid housing and comprising:
- an elastomeric material complemental in shape to the shape of said housing;
- a continuous closed air passage formed in said material;
- a ridge in the exterior surface of said material overlying said passage,
- whereby when said perpendicular force is applied to said component said elastomeric material is compressed and said ridge engages said housing thereby displacing air from said passage in the area of application of said force moving the displaced air to other areas of said passage to thereby increase the pressure within said elastomeric material in said other areas.
Dependencies are inferred from the claim text.