Plastic Sealing System for Beverage Media Distribution
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Solution Overview
Problem
Existing media distribution devices in beverage manufacturing face challenges with sealing efficacy, wear susceptibility, and hygiene risks due to metal springs and PTFE seals, which lead to corrosion, complex replacement processes, and inadequate cleaning properties.
Innovation Solution
A media distribution device with a sealing system comprising a plastic base body and an elastomeric prestressing body, where the prestressing body is made of materials like EPDM or FKM, and is designed to provide enhanced sealing force without metal components, with features such as flush integration and microbiocidal coatings to prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal springs are used to increase preload force on PTFE seals, then sealing force is improved, but corrosion susceptibility increases leading to seal destruction
Solution Approach 1:
The invention extracts and removes the metal spring component from the sealing system, replacing it with an elastomeric prestressing body that generates preload force through elastic deformation rather than metallic elasticity, thereby eliminating corrosion risks while maintaining sealing force
Solution Approach 2:
The invention substitutes the metallic mechanical spring system with an elastomeric mechanical system that uses rubber-like material properties to generate and maintain preload force on the PTFE seal, replacing the corrosion-prone metal components with corrosion-resistant elastomeric materials
2Reliability
If silicone filler is poured into cavities around springs, then sealing completeness is improved, but hygiene risk increases due to pores and bubbles
Solution Approach 1:
The invention extracts and eliminates the cavity-filling silicone material that creates pores and bubbles, instead using a solid elastomeric prestressing body that generates uniform contact pressure without requiring filler materials, thereby eliminating hygiene risks while maintaining sealing effectiveness
Solution Approach 2:
The invention changes the physical state and distribution of the sealing material from a poured filler with random pores to a pre-formed elastomeric body with controlled, uniform density and no pores, eliminating hygiene risks while maintaining sealing pressure
3Reliability
If PTFE seals are used with metal springs, then sealing effect is improved, but cleaning properties deteriorate due to metal contact surfaces
Solution Approach 1:
The invention extracts and removes all metal components from the sealing interface, creating a completely metal-free sealing system where elastomeric and plastic materials contact each other, thereby dramatically improving cleaning properties and hygiene while maintaining sealing effectiveness through the elastomeric prestressing body
4Reliability
If complex sealing devices with multiple components are used, then sealing performance is improved, but replacement complexity increases and system availability decreases
Solution Approach 1:
The invention merges multiple separate sealing components (PTFE seal, metal spring, silicone filler, housing) into an integrated elastomeric prestressing body that combines the functions of preload generation and sealing in a single component, thereby simplifying replacement while maintaining sealing performance
Solution Approach 2:
The elastomeric prestressing body serves multiple functions simultaneously: generating preload force on the PTFE seal, providing corrosion resistance, eliminating the need for filler materials, and simplifying the overall sealing device structure, thereby improving both performance and maintainability
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 solution enhances sealing performance, reduces wear, and improves hygiene by eliminating metal components and using microbiocidal materials, resulting in a more reliable and easier-to-maintain sealing system.
Implementation Method 1
a sealing device (10) having a base body (12) made of plastic and an elastic prestressing body (14) made of plastic on which the prestressing body (14) rests at least partially in order to prestress the base body (12)
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
The device has a guiding unit including a channel for guiding a medium and rotatably arranged in relation to a main channel concerning a predetermined axis of rotation. A sealing unit is provided between an external wall of the main channel and the guiding unit, and seals concerning bodies that are rotatable to each other. The sealing unit comprises a base body (12), and a flexible clamping body (14) partially lying at the base body for clamping the base body, where the clamping body and the base body are made of plastic. The base body and the clamping body are section-wise fit together.