Guide-Pin Check Valve Structure for Stable Shutter Motion
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Solution Overview
Problem
Existing check valves lack stability due to unaddressed fluid pressure and dynamic forces acting on the shutter, which can lead to unstable operation and potential backflow issues.
Innovation Solution
Incorporating a guide pin that extends into the inflow chamber to counteract forces acting on the shutter, combined with a guide sleeve for movability, enhances the stability of the check valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional check valve design is used without a guide pin, then the device complexity is low, but the stability and reliability of shutter operation deteriorates due to unaddressed fluid pressure and dynamic forces
Solution Approach 1:
The guide pin acts as an intermediary element between the shutter and the housing, providing a guided path for shutter movement. The guide pin extends into the inflow chamber and works with the guide sleeve to constrain the shutter's motion, ensuring stable operation by counteracting fluid pressure and dynamic forces that would otherwise cause unreliable shutter behavior.
2Reliability
If the guide pin extends far into the inflow chamber to counteract forces effectively, then the stability improves, but the length of the check valve increases
Solution Approach 1:
The guide pin is positioned coaxially with the shutter's movement path, extending into the inflow chamber along the flow direction. This axial positioning allows the guide pin to effectively counteract radial fluid forces and dynamic loads without requiring excessive length, as the force counteraction occurs in a different spatial dimension (radial forces countered by axially positioned guide pin).
3Reliability
If the guide pin is positioned close to the inlets to counteract forces, then the stability improves, but the manufacturing precision requirements increase
Solution Approach 1:
The guide pin and guide sleeve arrangement creates a self-aligning mechanism where the shutter's movement through the guide pin automatically positions components correctly during operation. The guide pin extends into the inflow chamber and the guide sleeve provides a movable guide, allowing the system to self-adjust and maintain proper positioning without requiring extremely tight manufacturing tolerances for the guide pin's initial placement.
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 guide pin and sleeve arrangement effectively counteract fluid forces, ensuring stable operation and preventing backflow, thus improving the overall performance and reliability of the check valve.
Implementation Method 1
As a result of fluid pressure and dynamics, forces acting on the shutter exist in the proximity of the inlets
Implementation Method 2
the guide pin and sleeve are arranged relatively close to the point at which said forces act. Consequently, the guide pin and guide sleeve may effectively counteract the forces acting on the shutter
Data Source
AI summary
The present application relates to a check valve (1) comprising a housing (2) with at least one inlet (3) and at least one outlet (4), the housing (2) defining an inflow chamber (5) connected to the at least one inlet (3) and an outflow chamber (6) connected to the at least one outlet (4), a valve seat (7) which defines a passage between the inflow chamber and the outflow chamber, and a shutter (8) which is displaceable with respect to the valve seat (7) between a closed position and an open position, the check valve (1) being provided with a guide pin (9) for guiding the shutter (8) between the open and closed positions, wherein the guide pin (9) at least partly extends in the inflow chamber (5) in a direction away from the shutter, the guide pin (9) being movably guided in a guide sleeve (10).