Valve Plug Locking Structure for Hazardous Container Drop Protection
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Solution Overview
Problem
Existing valves for hazardous chemical containers fail drop tests due to damage at the upper lip, especially when made of stainless steel, which is corrosive or cost-prohibitive, and plastic composite valves are not strong enough to withstand the test.
Innovation Solution
A plug system with keys and grooves secures to the container valve, bracing the upper lip during drops, and includes a tamper-evident mechanism to prevent unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stainless steel valves are used, then the upper lip is reinforced to reduce damage risk during drop test, but the valve becomes corrosive to certain chemicals and cost-prohibitive
Solution Approach 1:
The valve system is divided into two separate components: a plastic composite valve body and a stainless steel reinforcement ring. The reinforcement ring is installed around the upper lip of the container to provide structural strength during drop tests, while the plastic valve body maintains chemical compatibility with corrosive substances. This segmentation allows each component to perform its specific function without the drawbacks of using stainless steel for the entire valve.
Solution Approach 2:
The stainless steel reinforcement ring acts as an intermediary element that provides mechanical strength to the upper lip without coming into contact with the chemicals. The ring is positioned between the external environment (drop forces) and the chemical contents, allowing the plastic valve to remain chemically compatible while the steel ring handles mechanical reinforcement.
2Adaptability or versatility
If plastic composite valves are used, then the valve is compatible with corrosive chemicals and cost-effective, but the upper lip becomes vulnerable to failing the drop test
Solution Approach 1:
The valve system is divided into two separate components: a plastic composite valve body and a stainless steel reinforcement ring. The reinforcement ring is installed around the upper lip of the container to provide structural strength during drop tests, while the plastic valve body maintains chemical compatibility with corrosive substances. This segmentation allows each component to perform its specific function without the drawbacks of using stainless steel for the entire valve.
3Reliability
If a secure connection mechanism is added to the plug, then the plug is firmly secured to the valve, but the device complexity increases
Solution Approach 1:
The connection mechanism is segmented into discrete functional elements: keys protruding from the plug, corresponding notches in the valve, and circumferential grooves for rotational securing. This segmentation allows each element to perform a specific function (alignment, insertion, rotational locking) while keeping the overall design relatively simple and easy to manufacture.
Solution Approach 2:
The keys and notches are designed to automatically align and engage during plug insertion, providing self-aligning and self-securing functionality. The circumferential grooves guide the keys during rotation, ensuring automatic engagement without requiring external alignment tools or complex adjustment mechanisms.
Data Source
AI summary
A plug for a valve for a container that may contain hazardous materials is provided. The plug may include an outer wall, and one or more keys disposed on an external surface of the outer wall. The keys may be sized and shaped to respectively fit within one or more corresponding notches and one or more circumferential grooves in the valve to secure the plug to the valve. the plug may be sized and shaped to be inserted into the valve so that the one or more keys of the plug are respectively inserted into the one or more notches, and the one or more keys of the plug are configured to be respectively moved within the one or more circumferential grooves in a first direction as the plug is rotated.