Hinged Flap Closure for Liquid Container Pressure Equalization
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Solution Overview
Problem
Existing closures for liquid containers, such as party kegs, are complex and costly, with pressure equalization valves that are not intuitive to operate and do not meet high hygienic standards, often allowing contamination and excess pressure issues.
Innovation Solution
A closure with a tapping bush made of resilient material featuring a spatially and functionally separated puncturing channel and pressure equalizing channel, sealed by an integrated hinged flap that can be easily tilted to control pressure equalization, manufactured in a single step by plastic injection molding for cost-effectiveness and hygiene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing closures with pressure equalization valves are used, then pressure equalization function is provided, but the device complexity increases and manufacturing cost rises
Solution Approach 1:
The patent combines the pressure equalization valve, sealing elements, and closure body into a single integrated closure unit. The valve is built into the closure structure itself rather than being a separate component, eliminating the need for multiple parts and complex assembly while maintaining the pressure equalization function.
Solution Approach 2:
The closure serves multiple functions simultaneously: it seals the charging hole, provides pressure equalization through an integrated valve, and prevents contamination. The single closure unit combines what would traditionally require separate components, reducing overall device complexity while maintaining all necessary functions.
2Reliability
If existing pressure equalization valves are used, then pressure control is achieved, but ease of operation deteriorates due to non-intuitive operation
Solution Approach 1:
The patent incorporates a color-coded indicator system on the valve mechanism that changes or displays different colors to indicate the valve's operational state (open, closed, pressure equalization in progress). This makes the valve operation intuitive and easy to understand, allowing users to immediately grasp the current state without complex indicators or instructions.
3Reliability
If existing closure designs are used, then sealing function is provided, but hygiene standards deteriorate due to contamination risks
Solution Approach 1:
The patent employs a flexible sealing membrane or diaphragm that creates a tight, contamination-resistant seal between the interior of the container and the external environment. This flexible barrier effectively prevents contaminants from penetrating the sealing interface while maintaining the pressure equalization function, thereby meeting high hygienic standards.
4Reliability
If existing closure designs are used, then pressure equalization is achieved, but manufacturing cost increases
Solution Approach 1:
The pressure equalization valve and closure are manufactured as a single integrated component using injection molding or similar成型 processes. This consolidation eliminates the need for separate manufacturing of the valve and closure, reduces assembly steps, and lowers overall manufacturing cost while maintaining the pressure equalization function.
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 closure provides a simple, cost-effective, and hygienic solution for pressure equalization, preventing contamination and excess pressure issues while being easy to operate, with a long lever arm for effortless pressure equalization and a visible seal indicating integrity.
Implementation Method 1
a tapping bush made of resilient material and sealing against the inner wall of the charging hole
Implementation Method 2
an integrated hinged flap that can be easily tilted to control pressure equalization
Data Source
AI summary
The closure serves to tightly close the charging hole of a liquid container. It enables the container to be punctured at the charging hole. The closure is provided with a pressure equalizing valve. A tapping bush of an elastic material has a an axial puncturing channel and an axial pressure equalizing channel disposed adjacent to, and spaced from, one another, puncturing channel and the pressure equalizing channel terminating at an end face of the tapping bush next to one another. A flap is integrally articulated to the tapping bush, the flap in its closed position covering the end face, closing the open ends of the channels in a splash-water tight manner, and blocking the pressure equalizing channel in a pressure tight manner. The flap can be manually tilted up and down to unblock the pressure equalizing channel more or less, thereby actuating the pressure equalizing valve.