Integrated Control Valve Sealing to Lower Valve Core Load
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Solution Overview
Problem
Conventional multi-way control valves experience increased load on the valve core assembly due to high compression of the sealing member, leading to reduced service life.
Innovation Solution
A method involving the formation of a housing with an annular side wall and a sealing assembly that forms an integral structure with the housing, reducing the compression needed for sealing by integrating the sealing assembly and the annular side wall, thereby minimizing the load on the valve core assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sealing member is highly compressed to achieve sealing between the valve core assembly and the valve body, then sealing performance is improved, but the load on the valve core assembly increases and service life decreases
Solution Approach 1:
The sealing assembly is integrated with the annular side wall of the housing to form an integral structure. This merging eliminates the need for separate sealing components that require high compression forces, as the sealing function is built into the housing structure itself, thereby reducing the load on the valve core assembly while maintaining effective sealing
2Reliability
If the sealing member is highly compressed to achieve sealing, then sealing performance is improved, but service life of the control valve is shortened
Solution Approach 1:
By integrating the sealing assembly with the housing as an integral structure, the sealing function is permanently built into the valve body, eliminating the need for replaceable sealing members that degrade under compression. This significantly extends the service life of the control valve while maintaining consistent sealing performance throughout its operational lifespan
3Ease of manufacture
If the sealing assembly and housing are separately arranged, then manufacturing and assembly are simplified, but large compression amount is required increasing load on valve core assembly
Solution Approach 1:
The sealing assembly is merged with the annular side wall of the housing to form an integral structure during the housing formation process. This approach maintains manufacturing efficiency while eliminating the need for separate sealing components that would require high compression forces, as the sealing function is embedded in the housing structure itself
Data Source
AI summary
A method for manufacturing a control valve, and a control valve and a valve body assembly. The method for manufacturing a control valve comprises: injection-molding a housing, fixedly connecting a sealing assembly to the housing, and mounting a valve core assembly. The housing comprises an annular side wall, and the housing has a first communication port. The sealing assembly is fixed to an inner surface of the annular side wall, the sealing assembly comprises a second communication port that corresponds to the first communication port and is in mutual communication with same, and the sealing assembly is fixedly connected to the inner surface of the annular side wall and forms a first sealing face on the periphery of the first communication port. The valve core assembly is inserted into a space formed by the sealing assembly, and is tightly fitted with an inner surface of the sealing assembly.