Dual-Member Poppet Valve Assembly for Simultaneous Sealing
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Solution Overview
Problem
Existing poppet valves with large orifices require complex and costly components or time-consuming assembly methods to ensure simultaneous contact of sealing members with their respective seats, leading to potential leaks and increased manufacturing costs.
Innovation Solution
A poppet valve design featuring male and female threaded couplers allows for simultaneous sealing engagement of valve members with orifices without the need for spacers or sleeves, utilizing a valve stem with adjustable positioning and biasing devices to ensure proper alignment and sealing, thereby simplifying assembly and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two sealing members are fixed to a single shaft with spacers or sleeves to ensure simultaneous contact, then sealing reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent removes the spacer or sleeve component from the valve assembly. Instead of using a spacer to position the second sealing member, the design allows the sealing members to be directly mounted on the shaft, eliminating the intermediate component while maintaining simultaneous contact capability
Solution Approach 2:
The patent integrates the positioning function that was previously performed by a separate spacer component into the shaft structure itself. The shaft is designed with specific geometric features (such as shoulders or stepped sections) that directly determine the axial positions of both sealing members, merging multiple functions into a single component
2Manufacturing precision
If spacers or sleeves are used to position valve members, then simultaneous contact is achieved, but manufacturing cost and assembly time increase
Solution Approach 1:
The patent eliminates the spacer component entirely, removing the need for separate manufacturing and assembly of this positioning element. The shaft itself is designed to provide the necessary positioning features through its geometry, reducing part count and simplifying the manufacturing process
Solution Approach 2:
The shaft structure is designed to be self-positioning for the sealing members. Through features such as stepped sections, shoulders, or integrated locating surfaces, the shaft automatically ensures correct axial positioning of both sealing members during assembly without requiring external spacers or complex adjustment procedures
Data Source
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AI summary
A poppet assembly for a valve can include a valve stem for cooperating with a valve actuator, a first valve member (120) coupled to the valve stem (119) in a fixed position and configured to sealingly engage a first orifice (110a) and a second valve (121) member coupled to the valve stem and configured to sealingly engage a second orifice (110b). The second valve member can include a coupler (128) for coupling the second valve member to the valve stem and a seal (132) configured to couple to the coupler and the valve stem. The second valve member can be configured for achieving proper spacing between the valve members for simultaneous contact with their respective orifices without the need for more costly and time consuming components or assembly methods.