Closed-Transfer Coupler With Movable Probe and Spill Locking
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Solution Overview
Problem
Existing closed transfer systems for hazardous chemicals lack effective mechanisms to prevent spills and leaks during transfer, posing risks and requiring improved safety and efficiency in handling and cleaning processes.
Innovation Solution
A coupler system with a movable probe and handle within a closed transfer system, incorporating a cam locking mechanism and rinsing head, enables selective fluid communication and secure container attachment, facilitating safe transfer and cleaning while preventing accidental disconnection and spills.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closed transfer system is used to transport hazardous chemicals, then spill and leak risks are reduced, but the system complexity increases
Solution Approach 1:
The coupler is divided into distinct functional segments: a body housing, a movable probe assembly, a locking mechanism, and a handle assembly. Each segment performs a specific function (fluid control, structural support, security, actuation), allowing the complex system to be managed through modular components that can be independently manufactured, maintained, and replaced.
Solution Approach 2:
The probe is nested within the body housing and can move between retracted and extended positions. The handle assembly is nested within the body structure, and the locking mechanism is integrated into the housing. This nesting arrangement consolidates multiple functions into a compact configuration, reducing overall system complexity while maintaining reliability.
2Ease of operation
If a probe is made movable between positions to control fluid flow, then operational flexibility is improved, but the risk of accidental disconnection increases
Solution Approach 1:
The locking mechanism engages automatically when the container is inserted and the probe is extended, preventing accidental disconnection before fluid transfer begins. The handle must be deliberately manipulated to disengage the lock, ensuring that connection changes are intentional rather than accidental.
Solution Approach 2:
The probe is pre-positioned in a retracted state within the body housing before use. The handle is pre-configured in a locked position that secures the container. These preliminary positions ensure that the system starts in a safe, controlled state before operational actions are taken.
3Ease of operation
If a handle is added to control probe movement, then user control is improved, but the device complexity increases
Solution Approach 1:
The handle combines multiple functions into a single component: it acts as the actuation lever for probe movement, the engagement tool for the locking mechanism, and the interface for user control. This merging eliminates the need for separate controls for each function, reducing overall device complexity while improving ease of operation.
Solution Approach 2:
The handle serves multiple purposes throughout the operation sequence: initially engaging the locking mechanism, then controlling probe extension and retraction, and finally serving as a release lever. This multi-functionality reduces the number of separate components needed, simplifying the overall device structure.
4Reliability
If a locking mechanism is implemented to secure containers, then connection reliability is improved, but the ease of manufacture decreases
Solution Approach 1:
The locking mechanism is designed to engage automatically through spring-loaded lugs that snap into corresponding slots on the container when properly inserted. The system self-secures without requiring separate fastening operations or complex assembly steps, maintaining ease of manufacture while ensuring reliable container security.
Data Source
AI summary
A coupler for use in a closed transfer system is provided. The coupler includes a body with an axial slot, an outlet, and a probe that extends from a first end portion to a second end portion and at least partially received within the body, the probe configured to be movable relative to the body between a first position and a second position to selectively control the flow of fluid through the outlet. A handle is coupled to the probe and configured to interface with the axial slot, wherein the handle is configured to move axially along the axial slot to move the probe between the first position and the second position.