Process Valve Diaphragm Tensioning With Self-Locking Gearing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing process valves face challenges in achieving efficient and tool-free tensioning of diaphragms, which affects cleanability, service processes, and the service life of the diaphragms, particularly under varying operating pressures.
Innovation Solution
A tensioning assembly with a housing, gearing, and a tensioning element that converts rotational movement into translational movement, allowing for adjustable and self-locking tensioning of the diaphragm's outer collar, integrated with a sensor unit for automatic tensioning and slackening, enabling tool-free and semi-automated operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spring pre-loaded system is used for tensioning the diaphragm, then the tensioning is simple and automatic, but the tension cannot be adjusted to different operating pressures and the service life is limited
Solution Approach 1:
The patent transitions from a static spring pre-loaded system to a dynamic tensioning system using a gearing mechanism with a drive that can be actuated to adjust tension. The tensioning element can be moved along the adjusting axis to change the tension state, allowing adaptation to different operating pressures while maintaining automated control through the drive mechanism.
Solution Approach 2:
The patent enables change of the tension parameter by introducing a drive mechanism that can adjust the position of the tensioning element. The gearing converts rotational movement into translational movement, allowing precise control of the tension force applied to the diaphragm's outer collar, thus adapting to different operating pressure requirements.
2Ease of manufacture
If the diaphragm is tensioned during assembly of the tensioning assembly on the valve body, then the assembly is compact, but the design freedom of surfaces is limited and cleanability is reduced
Solution Approach 1:
The patent separates the tensioning function from the valve body assembly by using a独立的 tensioning assembly that can be mounted separately. The tensioning assembly includes its own housing, gearing, and tensioning element, allowing the valve body surfaces to be designed for optimal cleanability without compromise from integrated tensioning features.
Solution Approach 2:
The patent introduces a tensioning assembly as an intermediary component between the valve body and the diaphragm. This intermediate device provides the tensioning function while allowing both the valve body and diaphragm to have optimized surfaces for cleanability, as the tensioning assembly handles the clamping action without requiring direct integration into the valve body structure.
3Adaptability or versatility
If a non-self-locking gearing is used, then the tensioning can be adjusted freely, but the adjusted tension cannot be maintained without permanent actuation
Solution Approach 1:
The patent implements a self-locking gearing mechanism that automatically maintains the adjusted tension state without requiring continuous actuation. The self-locking feature allows the gearing to hold its position against the applied load, ensuring the diaphragm remains clamped at the desired tension level without permanent actuation, thus improving reliability while preserving adjustment freedom.
4Manufacturing precision
If manual tensioning tools are required for diaphragm tensioning, then the tensioning can be precisely controlled, but the service processes are time-consuming and require additional tools
Solution Approach 1:
The patent replaces manual mechanical tensioning tools with an automated drive mechanism integrated into the tensioning assembly. The drive converts rotational movement into translational movement of the tensioning element through gearing, providing precise tension control automatically without requiring external manual tools, thus increasing service process speed and productivity.
Solution Approach 2:
The patent accelerates the tensioning process by using a motorized drive mechanism that can quickly and precisely adjust the tensioning element position. The automated system eliminates the time-consuming manual operation of traditional tools while maintaining or improving tensioning precision through controlled movement along the adjusting axis.
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
This solution enhances the cleanability and service life of process valves by allowing for precise and adjustable tensioning, simplifying maintenance, and ensuring safe operation without permanent actuation, particularly beneficial in industries like pharmaceuticals and food.
Implementation Method 1
the tensioning assembly converts a substantially rotational movement of the drive by means of the gearing into a translational movement of the tensioning element oriented along an adjusting axis
Implementation Method 2
the gearing is designed to be self-locking. This means that an adjusted tension is maintained on the outer collar of the diaphragm without permanent actuation of the drive
Implementation Method 3
the tensioning assembly comprises a sensor unit which is designed to provide at least one signal which characterizes a tension acting on the outer collar of diaphragm
Data Source
AI summary
A tensioning assembly for a process valve is provided, including a housing having an interface for rigid connection to a valve body, a drive which is arranged so as to be fixed to the housing, a gearing supported on the housing and driven by the drive, and a tensioning element arranged on the output of the gearing, wherein the tensioning element includes a contact surface which is designed to clamp a lateral outer collar of a diaphragm of the process valve between the tensioning element and the valve body.