Inline Dispensing Collar for Cap Removal Without Seal Loss
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Solution Overview
Problem
Existing inline systems for dispensing dispersants in hot tubs face difficulties in replacing dispensing cartridges due to issues such as overtightening of caps or temperature changes, making it hard to remove the cap and replace the cartridges.
Innovation Solution
A multithreaded collar with two sets of threads allows for a well cap and cartridge carrier to be independently engaged, enabling the cap to be removed without breaking the seal between the cartridge carrier and the collar, using a rotatable hub and sealing ring to maintain a water-tight connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cap is overtightened to ensure sealing, then the sealing reliability is improved, but the ease of operation deteriorates as it becomes difficult to remove the cap for cartridge replacement
Solution Approach 1:
The invention divides the sealing function into two independent parts: the cap seals against the collar when tightened, while the cartridge carrier seals against the collar through its own sealing surface. This segmentation allows the cap to be removed without compromising the cartridge carrier's seal, resolving the contradiction between secure sealing and easy maintenance access.
Solution Approach 2:
The collar acts as an intermediary component that provides separate sealing interfaces for both the cap and the cartridge carrier. By introducing this intermediate element with distinct sealing surfaces, the system enables independent sealing actions, allowing the cap to be removed while maintaining the water-tight connection of the cartridge carrier.
2Ease of operation
If temperature changes occur in the cap and well, then the sealing may be compromised, but the ease of operation improves as the cap becomes easier to remove
Solution Approach 1:
The sealing function is segmented between the cap-collar interface and the cartridge carrier-collar interface. Temperature-induced expansion or contraction affects each interface independently, but the overall sealing reliability is maintained because the cartridge carrier's seal remains intact even when the cap is removed due to thermal changes.
3Device complexity
If a single threaded connection is used for both cap and cartridge carrier, then the device complexity is reduced, but the ease of operation deteriorates as the cap cannot be removed without breaking the seal
Solution Approach 1:
The threaded connection is segmented into two independent sets: one on the collar for the cap and another on the collar for the cartridge carrier. This segmentation increases structural complexity slightly but enables the cap to be removed independently without disrupting the cartridge carrier's sealed connection, significantly improving ease of operation for cartridge replacement.
Solution Approach 2:
The invention adds a dimensional aspect by providing separate threading arrangements in different spatial orientations or positions on the collar. This allows independent rotational engagement and disengagement of the cap and cartridge carrier, enabling maintenance operations without compromising the sealed connection.
Data Source
AI summary
An inline dispensing system having a collar engageable with an inline well to support an inline cap thereon and for directing a cartridge carrier into a sealing relation therewith as a cartridge carrier is inserted into an inline well in a container of a body of recreational water.