Hygienic Conduit Coupling With Controlled Gasket Compression
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Solution Overview
Problem
Hygienic couplings in the food, cosmetics, pharmaceutical, and chemical industries face challenges in achieving reliable, tight seals with controlled compression while preventing dust and dirt accumulation, and must comply with European Hygienic Engineering and Design Group (EHEDG) guidelines, which are not adequately addressed by existing solutions.
Innovation Solution
A conduit clamping and sealing system comprising a bearing element with a back segment for attachment, a middle segment for conduit reception and alignment, and a front segment for sealing, along with a front nut to secure a hygienic sleeve system, ensuring pre-defined compression and preventing metal-on-metal contact through a U-shaped insert and involute compression surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coupling designs are used, then installation is simple, but reliable tight sealing with controlled compression is not achieved
Solution Approach 1:
The coupling is divided into distinct segments: a bearing element with threaded back segment for mounting, a middle segment for conduit reception and alignment, and a front segment for sealing operations. This segmentation allows each part to perform its specific function optimally while maintaining overall reliability.
Solution Approach 2:
A hygienic sleeve system acts as an intermediary component between the conduit and the bearing element. This sleeve provides controlled compression through predefined compression surfaces and prevents direct metal-to-metal contact, ensuring reliable sealing while protecting the gasket from damage.
2Object-affected harmful factors
If conventional sealing methods are used, then installation is easy, but dust and dirt accumulation is not prevented
Solution Approach 1:
A hygienic sleeve system with seamless construction acts as a protective shell that prevents dust and dirt accumulation. The sleeve covers all internal surfaces and crevices, creating a smooth exterior that resists contamination while maintaining ease of installation through the standardized coupling mechanism.
Solution Approach 2:
The bearing element and hygienic sleeve are pre-assembled as a integrated unit before installation. This preliminary assembly ensures that all sealing surfaces and compression points are correctly positioned, preventing contamination during the final installation process while maintaining operational simplicity.
3Manufacturing precision
If standard gasket compression is used, then installation is straightforward, but controlled and predefined compression on gaskets is not achieved
Solution Approach 1:
The bearing element features an involute compression surface with a precise curved profile that translates rotational motion into controlled linear compression of the gasket. This geometric design ensures predefined compression force is applied uniformly across the gasket surface, achieving manufacturing precision without complex mechanical mechanisms.
Solution Approach 2:
The coupling system controls gasket compression by changing the geometric parameters of the compression surface. The involute profile is designed with specific radius and angle parameters that determine the compression force and distribution, allowing precise control of gasket compression through geometric design rather than complex mechanical adjustments.
4Object-affected harmful factors
If metal-to-metal contact is allowed, then manufacturing is simpler, but contamination and wear are increased
Solution Approach 1:
A U-shaped insert acts as an intermediary component between metal surfaces, preventing direct metal-to-metal contact. This insert is positioned in the conduit reception area and provides a protective barrier that reduces wear and prevents contamination while maintaining manufacturing simplicity through a single additional component.
Data Source
AI summary
A conduit clamping and sealing system includes: a bearing element including: a back segment with an external back thread for attaching to a device or fastening to a box or enclosure; a middle segment for receiving a conduit and guiding and/or aligning a hygienic sleeve system; and a front segment for receiving a seal, and a front nut for sealing a connection between the conduit and the bearing element and fastening the hygienic sleeve system.