Dual Check Valve Assembly for Filtration Priming and Backflow Control
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Solution Overview
Problem
Filtration systems face challenges in effectively managing fluid flow direction and pressure differentials during priming and operation, particularly when using hand pumps, leading to inefficiencies and potential damage to downstream devices.
Innovation Solution
A valve assembly with dual check valves that allow fluid flow in a single direction and adapt to pressure differentials, ensuring seamless operation with hand pumps and electric pumps, and integrating with filtration systems to manage fluid flow and pressure differentials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a valve assembly is designed to manage fluid flow direction and pressure differentials during priming and operation, then system reliability and protection of downstream devices is improved, but device complexity increases due to the need for dual check valves and multiple chambers
Solution Approach 1:
The patent combines multiple valve functions into a single integrated valve assembly. The dual check valves (first and second valve members) are housed within one valve body that contains multiple chambers (first, second, and third chambers). This merging approach allows the system to manage fluid flow direction and pressure differentials during both priming and operation phases while protecting downstream devices, achieving improved reliability without proportionally increasing overall device complexity.
Solution Approach 2:
The valve assembly is designed to perform multiple functions: it manages fluid flow direction during priming, manages fluid flow direction during operation, prevents backflow through dual check valves, and protects downstream devices from damage. The first and second valve members can selectively open and close different passageways (first, second, and third fluid passageways) to accommodate different operational modes, providing universal functionality that justifies the increased device complexity.
2Ease of operation
If dual check valves are used to prevent backflow and manage pressure differentials, then fluid flow control is improved, but the number of components and manufacturing complexity increases
Solution Approach 1:
The first and second check valves are integrated into a single valve body structure. The valve body contains multiple chambers and fluid passageways that connect these valves, allowing them to work together as a coordinated system. This merging reduces the number of separate components that would need to be manufactured and assembled individually, thereby improving ease of operation while mitigating manufacturing complexity.
Solution Approach 2:
The valve body is segmented into multiple chambers (first, second, and third chambers) separated by central walls. This segmentation allows independent control of different fluid paths through the first and second valve members. Each chamber can be manufactured and sealed independently, then assembled into the complete valve assembly, which improves fluid flow control while making manufacturing more manageable through modular construction.
3Productivity
If multiple fluid passageways and chambers are integrated into one valve body, then fluid flow management efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The valve body is divided into multiple chambers (first, second, and third chambers) separated by central walls with specific openings. This segmentation allows each chamber to be designed and manufactured with focused precision requirements for its specific function. The central walls act as independent sealing surfaces that can be manufactured and tested separately, reducing the overall manufacturing precision burden while maintaining efficient fluid flow management through coordinated chamber operation.
Solution Approach 2:
Multiple fluid passageways (first, second, and third fluid passageways) are integrated into the valve body structure, connecting the different chambers and allowing controlled fluid flow between them. This merging of passageways into a single integrated structure improves fluid flow management efficiency by providing direct, controlled paths between chambers, while the modular chamber design allows each passageway to be manufactured with manageable precision requirements.
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 valve assembly ensures efficient fluid flow management, preventing backflow and optimizing priming and operation, thereby protecting downstream devices and enhancing system efficiency.
Implementation Method 1
when a second fluid pressure in the second chamber is less than a first fluid pressure in the first chamber, the first valve member is forced away from the first central wall
Data Source
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AI summary
The application relates to a valve arrangement for a filtration system. A valve assembly includes a valve body. The valve body includes a first central wall defining a first valve opening, a first fluid passageway, and a valve central opening, and a valve wall defining a second valve opening and a second fluid passageway. The valve assembly includes a first valve member disposed at the first valve opening. The first valve member is selectively repositionable between a first valve member first position, where the first valve member engages the first central wall such that the first valve member forms a first seal that substantially prevents a fluid from flowing through the one or more first fluid passageways, and a first valve member second position, where the first valve member disengages the first central wall such that the fluid is permitted to flow through the one or more first fluid passageways.