Spring-Loaded Valve Diaphragm for Long-Term Clamping Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional diaphragm valves face challenges in maintaining a stable seal over time due to material settling, thermal cycling, and fluctuating clamping pressures, often requiring complex fastening systems for long-term fixation.
Innovation Solution
A valve diaphragm with a separately formed elastic force transmission element that applies a spring force to maintain clamping pressure between the diaphragm and the valve body, enhancing sealing reliability and simplifying installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fastening systems are used to maintain clamping pressure, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the force transmission function from the diaphragm layer by introducing a separate elastic force transmission element. This element is arranged on or in the clamping section and formed separately from the diaphragm layer, allowing independent optimization of clamping properties without complicating the overall fastening system
Solution Approach 2:
The patent changes the mechanical parameters by introducing an elastic force transmission element with specific spring rate and E-modulus properties. The spring rate of the force transmission element is greater than the spring rate of the diaphragm layer, and its E-modulus is larger, enabling tailored mechanical properties for long-term clamping force retention
2Ease of manufacture
If the force transmission element is integrated into the diaphragm layer, then manufacturing is simplified, but clamping force retention deteriorates
Solution Approach 1:
The patent segments the force transmission function from the diaphragm layer by providing a separately formed elastic force transmission element. This segmentation allows each component to be optimized independently - the diaphragm layer for fluid control and the force transmission element for clamping force retention
3Force
If the spring rate of the force transmission element is increased, then clamping force is improved, but stress on the diaphragm increases
Solution Approach 1:
The patent applies local quality by concentrating the high spring rate and E-modulus properties specifically in the force transmission element rather than throughout the entire diaphragm structure. This allows high clamping force to be applied locally at the clamping section while the functional section maintains appropriate flexibility
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 design ensures improved sealing performance, reduces the risk of leakage, and extends service life by providing tailored mechanical properties and long-term clamping force retention.
Implementation Method 1
at least one elastic force transmission element, arranged on or in the clamping section and formed separately from the diaphragm layer, for clamping the valve diaphragm against a valve body of the diaphragm valve
Implementation Method 2
The at least one force transmission element can apply a preload to the valve diaphragm parallel to the actuation axis or can exert a spring force on the valve diaphragm parallel to the actuation axis
Data Source
AI summary
A valve diaphragm for a diaphragm valve includes a diaphragm layer having a clamping section and a functional section surrounded by the clamping section. The functional section is displaceable along an actuation axis. At least one elastic force transmission element is disposed on or within the clamping section and is structurally separate from the diaphragm layer. The force transmission element is configured to clamp the valve diaphragm against a valve body of the diaphragm valve.