Spherical Valve Core Alignment for Stable Multi-Core Control Valves
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Solution Overview
Problem
Existing control valves with multiple valve cores face instability in cooperation with their corresponding drive members due to manufacturing or assembly errors, leading to unstable fluid control.
Innovation Solution
The control valve design incorporates a spherical structure for the valve cores, which allows them to deflect around position-limiting portions, facilitating a stable transmission connection with drive shafts and reducing instability by enabling precise alignment and rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rigid valve cores are used, then manufacturing precision can be maintained, but assembly stability and alignment with drive members deteriorate due to manufacturing or assembly errors
Solution Approach 1:
The valve core is designed with a spherical structure instead of a traditional rigid shape. This spherical design allows the valve core to deflect and adapt to position-limiting portions in the valve body, compensating for manufacturing or assembly errors while maintaining stable cooperation with drive members. The curvature enables automatic alignment and reduces sensitivity to dimensional variations.
Solution Approach 2:
The valve core transitions from a static rigid structure to a dynamic deflatable structure. By incorporating deflation capability, the valve core can adjust its position and orientation to accommodate assembly variations, thereby improving reliability of cooperation with drive members while maintaining acceptable manufacturing precision tolerances.
2Reliability
If spherical valve cores with deflection capability are used, then alignment stability with drive members improves, but device complexity increases due to additional position-limiting structures
Solution Approach 1:
The position-limiting portions are integrated directly into the valve body structure rather than being separate components. This merging approach provides the necessary alignment and positioning functions while avoiding additional parts, thereby improving transmission connection stability without proportionally increasing device complexity.
Solution Approach 2:
The valve body serves multiple functions: it houses the valve cores, provides sealing surfaces, and incorporates position-limiting portions for alignment. This multi-functionality reduces the need for separate alignment components, balancing the added complexity of spherical valve cores with consolidated structural elements.
Data Source
AI summary
A control valve includes a valve body, a first valve core, a second valve core, a first drive shaft, and a second drive shaft. The first valve core is in transmission connection with a first drive member via the first drive shaft; the second valve core is in transmission connection with a second drive member via the second drive shaft; the valve body includes a first limiting portion and a second limiting portion; the main body of the first valve core is of a spherical structure, and the first valve core can deflect around the first limiting portion; and/or the main body of the second valve core is of a spherical structure, and the second valve core can deflect around the second limiting portion.