Bioprocessing Tank Door Locking Mechanism
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Solution Overview
Problem
Existing tank latches for bioprocessing applications are inadequate, lacking improved mechanisms to securely lock flexible containers during expansion and filling processes, which can lead to safety hazards and unauthorized openings.
Innovation Solution
A tank door locking mechanism featuring a rotatable shaft with a projecting arm and an arm receiver, allowing the door to pivot outwardly when contacted by an expanded bioprocessing container, ensuring secure locking without automation or electronics, and optionally allowing an external lock for added security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional latch mechanism is used to secure the tank door, then the door can be locked during filling and transport, but the mechanism becomes complex and requires additional components that increase device complexity
Solution Approach 1:
The tank door itself serves as the locking mechanism through its outward pivoting motion. When the flexible container expands, it pushes the door outward to pivot open, automatically releasing without requiring separate latch components. This self-service approach eliminates complex locking mechanisms while maintaining reliable door security during transport and filling operations.
Solution Approach 2:
The tank door is designed to be dynamically movable rather than statically locked. The door can pivot outward when needed (during filling when the container expands) but remains relatively fixed during transport. This dynamic design allows the door to adapt its state based on operational requirements without requiring complex actuation mechanisms.
2Reliability
If the tank door is fixed securely during transport, then accidental opening is prevented, but the door cannot pivot outwardly to accommodate expanded flexible containers during filling operations
Solution Approach 1:
The door transitions from a static, securely fixed state during transport to a dynamic, outwardly pivoting state during filling operations. This dynamic capability allows the door to adapt to the expanding flexible container while maintaining security during transport, resolving the contradiction between fixed security and operational adaptability.
Solution Approach 2:
The expansion of the flexible container, which could be considered a harmful force potentially causing accidental opening, is converted into a beneficial mechanism. The expanding container pushes the door outward to pivot open automatically, using the expansion force itself to enable the door opening rather than requiring separate actuation mechanisms.
3Reliability
If a complex interlock assembly with springs and plungers is used to prevent unauthorized opening, then door security is improved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The outward pivoting door mechanism serves as its own security feature. The door's natural tendency to remain closed and cover the opening provides inherent security against unauthorized access, eliminating the need for complex interlock assemblies with springs, plungers, and multiple moving parts while maintaining effective prevention of unauthorized opening.
Data Source
Figure 1A
Figure 1B~1C
Figure 1D
AI summary
A tank (500) with a door locking mechanism (300) for use in bioprocessing, and methods of using the door locking mechanism, is provided.