Fluid-Actuated Diaphragm Drive With Segmented Insert Bodies
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fluid-actuated diaphragm drives face challenges in cost-effective and complex design optimization, particularly in the production and assembly of drive housings and control passage structures, which can lead to inefficiencies and increased costs.
Innovation Solution
The use of separate insert bodies within the drive housing, which are easier and more cost-effective to produce, to clamp and seal the drive diaphragm, allowing for the creation of fluid-tight chambers for fluid flow control, preventing axial fluid transfer, and facilitating the standardization of diaphragm drives with identical housing parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the drive housing directly bounds the operating chambers and clamps the drive diaphragm, then the structure is simpler, but the manufacturing cost increases and production becomes less efficient
Solution Approach 1:
The drive housing is segmented into separate insert bodies that can be independently manufactured and then assembled. The insert bodies are inserted into the drive housing parts, and the drive diaphragm is clamped between these separate insert bodies. This segmentation allows each component to be optimized for its specific function and manufactured more efficiently, reducing overall production costs while maintaining structural integrity.
2Ease of manufacture
If the drive housing directly provides control passage structures, then the device has fewer components, but the control passage structure becomes more complex and costly to produce
Solution Approach 1:
The control passage structure is extracted from the drive housing and integrated into the separate insert bodies. This allows the control passages to be formed as integral parts of the insert bodies during their manufacturing process, which is more cost-effective and efficient than machining complex passages into the drive housing itself. The insert bodies with integrated control passages are then assembled into the drive housing.
3Reliability
If the drive diaphragm is clamped directly between drive housing parts, then the assembly is simpler, but the diaphragm may be damaged by sharp edges and sealing becomes difficult
Solution Approach 1:
The insert bodies serve as intermediary elements between the drive housing parts and the drive diaphragm. These insert bodies provide rounded, diaphragm-friendly clamping surfaces that prevent damage to the diaphragm edge, unlike the potentially sharp edges of the drive housing parts. The insert bodies also facilitate sealing by providing suitable surfaces for seal structures, improving reliability without requiring complex direct clamping arrangements.
4Productivity
If identical drive housing parts are used for standardization, then production efficiency increases, but adaptability to different configurations decreases
Solution Approach 1:
The insert bodies provide local quality variations while the drive housing parts remain standardized. Different insert bodies can be manufactured with specific geometries, control passage configurations, and sealing features tailored to different diaphragm drive requirements. These customized insert bodies are then assembled into the standardized drive housing parts, enabling production efficiency through standardization while maintaining design flexibility through localized customization.
Data Source
AI summary
A fluid-actuated diaphragm drive and a valve arrangement which is equipped therewith, wherein the diaphragm drive has a drive housing with two drive housing parts which are attached to one another axially. An insert body which preferably consists of plastic material and delimits at least one length section of an operating chamber which can be loaded with a fluid is inserted into each of the drive housing parts, wherein a drive diaphragm which is movement-coupled to an output member is clamped in between the two insert bodies. A seal structure which is active between at least one of the insert bodies and the drive housing is capable of preventing an axial flow around the two insert bodies in the region which lies radially between them and the drive housing.