Valve Device Capable of Maintaining Safe Pressure of Pressure Vessel

摘要

A valve device comprises a body, a rotating valve set and a safety valve set. The body comprises an inner space, a first opening and a second opening. When the rotating valve set is located in a water-providing position, the inner space, the first opening and the second opening are communicable. When water pressure is higher than a safe pressure, the safety valve set and the rotating valve set can block the first opening and the second opening that safe pressure is maintained at the second opening. When water pressure becomes normal, the safety valve set is moved to its original position. Therefore, it has a piston-typed safety valve set is highly reliable. It has a coaxial structure to reduce its volume. It has an engaging and hooking structure for precise and easy assembly. It has an opening and/or closing function for its valve body with wide range of applications.

主权项

1. A valve device capable of maintaining safe pressure of a pressure vessel, comprising:
a body comprising:
an inner space;a first opening spatially communicable with the inner space and having a first inner wall surface and a virtual axis defined to extend through a center of the first opening;a second opening spatially communicable with the internal space and the first opening, and intersecting the first opening; a rotating valve set disposed at the body corresponding to the first opening, the rotating valve set comprising:
a rotating part being watertightly disposed and inserted in the body, and being coaxial with the first opening along the virtual axis, the rotating part extending into the inner space and rotating along the virtual axis in the inner space relatively to the body between a water-providing position and a water-stopping position;a pivot connecting part located at the rotating part and being coaxial with the first opening along the virtual axis;a water hole disposed at a radial position of the rotating valve set and extending radially through the rotating valve set corresponding to the second opening, and being mutually watertight from the inner space, the water hole and the second opening being spatially communicable with each other when the rotating part rotates to the water-providing position, the water hole and the second opening being mutually staggered away from each other when the rotating part rotates to the water-stopping position;a watertight hole wall located between the first opening and the second opening in the body, and being coaxial with the first opening along the virtual axis; a safety valve set being disposed in the rotating part to extend through the rotating part and extend into the inner space, the safety valve set comprising:
a valve part being watertightly disposed inside the rotating part and being able to move along the virtual axis relatively to the rotating part, the valve part comprising a compression end edge and a stopper end edge, the compression end edge facing toward the watertight hole wall, and the stopper end edge oppositely facing toward the pivot connecting part;a valve claw end part extending out from the compression end edge along a direction toward the first inner wall surface for the valve part to abut against the first inner wall surface, and being able to maintain spatial communication between the first opening and the inner space;a connecting rod part disposed between the compression end edge and the valve claw end part, and forming a watercourse between the compression end edge and the valve claw end part, the watercourse being located inside the inner space and is spatially communicable with the first opening and the second opening;a pivoting end part extending out from the stopper end edge along a direction from the stopper end edge toward the pivot connecting part, and being used for the valve part to be watertightly inserted and disposed in the pivot connecting part and to be able to move relatively to the pivot connecting part;a flexible piece being sleeved and disposed on the pivoting end part, and engaged between the rotating part and the stopper end edge, the flexible piece being used for engaging and pushing the valve part to make the valve claw end part abutting and engaging on the first inner wall surface; anda watertight section part disposed adjacent to the valve claw end part corresponding to the watertight hole wall; wherein the second opening is opened or closed when the rotating part is located at the water-providing position or the water-stopping position, respectively, when the rotating part is located at the water-providing position, water is supplied from the first opening toward the second opening, when the hydraulic pressure is increased, the compression end edge is pushed to press the flexible piece, and when the hydraulic pressure is increased to exceed a preset safe pressure, the watertight section part is watertightly engaged with the watertight hole wall to block a passageway between the first opening and the second opening so that a safe pressure can be maintained at the second opening.