Coaxial Fluid Control Valve with Delay Closing Mechanism
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Solution Overview
Problem
Conventional fluid control valves are complex in structure, large in size, and not user-friendly, and they lack sufficient fluid control capability to prevent operation delays in high responsiveness applications.
Innovation Solution
A fluid control valve with a coaxial design incorporating an opening and closing valve mechanism and a throttle valve mechanism, featuring a delay valve closing mechanism and a needle valve, which temporarily opens the flow path when pressure fluid is supplied, improving responsiveness and fluid control capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple valve mechanisms (needle valve, flow rate control valve, check valve) are separately incorporated in the valve housing, then the fluid control capability is improved, but the structure becomes complicated and the size increases
Solution Approach 1:
The patent combines multiple valve mechanisms (opening and closing valve mechanism, throttle valve mechanism, and delay valve closing mechanism) into a single integrated valve body. The opening and closing valve portion, throttle valve portion, and delay valve closing mechanism are all incorporated coaxially within the same valve housing, eliminating the need for separate valve components and reducing overall structural complexity while maintaining comprehensive fluid control capability.
Solution Approach 2:
The unified valve body performs multiple functions simultaneously: the opening and closing valve mechanism provides rapid flow path opening, the throttle valve mechanism provides restricted flow control, and the delay valve closing mechanism provides timed closure. This multi-functional integration allows a single valve to replace what would traditionally require multiple separate valve components.
2Reliability
If multiple valve mechanisms are separately incorporated in the valve housing, then the fluid control capability is improved, but the valve size becomes large
Solution Approach 1:
The patent employs a nested coaxial arrangement where the opening and closing valve portion, throttle valve portion, and delay valve closing mechanism are all positioned along the same central axis within the valve body. This nested configuration allows multiple valve mechanisms to occupy overlapping spatial volumes, significantly reducing the overall valve size compared to a linear arrangement of separate valves.
3Speed
If the opening area when temporarily opening the first flow path is larger than the opening area when restrictedly opening the second flow path, then the responsiveness is improved, but the flow rate control precision may be reduced
Solution Approach 1:
The patent implements a dynamic flow control system where the valve opening area varies based on operational requirements. The opening and closing valve mechanism provides a large opening area for rapid responsiveness when full flow is needed, while the throttle valve mechanism provides a smaller, adjustable opening area for precise flow rate control. The system dynamically switches between these two modes based on the operational state.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The fluid control valve simplifies structure, reduces size, and enhances responsiveness and fluid control capability by temporarily opening the flow path, addressing the limitations of conventional valves.
Implementation Method 1
when a valve closing force generated in the first piston by the action of the pressure fluid introduced into the first pressure chamber through the delay flow path exceeds the valve opening force generated in the opening and closing valve body
Data Source
AI summary
A fluid control valve includes a first flow path and a second flow path that connect a first port and a second port in parallel. The first flow path includes an opening and closing valve mechanism that temporarily opens the first flow path. The second flow path includes a throttle valve mechanism that restrictedly opens the second flow path. The opening and closing valve mechanism includes an opening and closing valve portion including an opening and closing valve seat and an opening and closing valve body, a valve opening force generator, and a delay valve closing mechanism that closes the opening and closing valve body after a delay time has elapsed. The throttle valve mechanism includes a throttle valve portion. The opening area of the opening and closing valve portion is larger than the opening area of the throttle valve portion.