Flow-Diverter Valve for Filtration Device
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Solution Overview
Problem
Existing filtration and dirt-separation devices have complex and expensive structures, often requiring multiple sealing elements to prevent fluid leakages, and maintenance operations disrupt water flow or risk drainage of hydraulic appliances.
Innovation Solution
A compact filtration and dirt-separation device with a three-way flow-diverting valve housed inside the main body, featuring two one-way valves and annular sealing elements made of low-friction materials, allowing for three operating conditions: filtering, by-pass, and closing, to manage fluid flow and prevent drainage during maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sealing elements are used to prevent fluid leakages, then hydraulic tightness is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple sealing functions into a single integrated sealing system. The valve body incorporates integrated sealing surfaces and channels that eliminate the need for multiple separate sealing elements, achieving hydraulic tightness through a unified structure rather than multiple discrete components
Solution Approach 2:
The valve body is designed as a multi-functional component that simultaneously provides structural support, fluid distribution, and sealing functions. The integrated design makes the valve body serve multiple purposes, reducing the overall number of components needed in the system
2Ease of repair
If maintenance operations are performed by isolating the device from hydraulic piping, then cleaning effectiveness is improved, but water flow is interrupted
Solution Approach 1:
The valve is divided into separable segments including removable valve bodies and modular components. This segmentation allows maintenance personnel to access and clean internal channels without isolating the entire filtration device from the hydraulic system, enabling localized maintenance while maintaining system operation
Solution Approach 2:
The valve incorporates preliminary cleaning features such as accessible drainage channels and self-flush mechanisms that allow maintenance personnel to perform cleaning operations without complete system isolation. The design includes pre-configured access points and drainage paths that facilitate maintenance while minimizing operational disruption
3Volume of moving object
If a compact valve structure is used, then device size is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The valve design applies local quality by concentrating sealing functions at specific localized areas rather than requiring uniform precision throughout the entire compact structure. Critical sealing surfaces are selectively enhanced with precise machining or specialized sealing technologies only where needed, while other areas use standard manufacturing tolerances
Solution Approach 2:
The valve incorporates composite construction combining materials with different properties - such as metal bodies for structural integrity and polymer or elastomeric sealing elements for flexible sealing. This composite approach allows the rigid structure to maintain compact dimensions while the flexible sealing components compensate for minor dimensional variations, reducing overall manufacturing 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 solution results in a more robust, compact, and cost-effective device with improved hydraulic tightness and simplified maintenance, allowing for uninterrupted water flow during cleaning operations and preventing hydraulic appliance drainage.
Implementation Method 1
a flow-diverting valve (150) housed inside the main body (110) in a seat (116) set in fluid communication with the inlet conduit (114), the cup-shaped container (130) and the outlet conduit (115) through respective openings (116a, 116b, 116c)
Implementation Method 2
a first one-way valve (180) arranged at the end of the outlet conduit (115) which is in fluid communication with the cup-shaped container (130), and a second one-way valve (181) arranged at the end of the outlet conduit (115) intended to be connected to a hydraulic appliance
Implementation Method 3
Two ring-shaped sealing elements (160, 161) made of a low-friction material, for example PTFE, are arranged in the seat (116) of the flow-diverting valve (150)
Implementation Method 4
a cup-shaped container (130) wherein a filter cartridge (120) may be optionally accommodated... suitable to allow to divert an incoming water flow towards the cup-shaped container (130) with its possible filter cartridge (120) so as to remove impurities
Implementation Method 5
Filtration and dirt-separation devices may advantageously comprise magnets arranged inside the filter cartridge, if present, for example coaxially thereto, and adapted to promote collection of ferrous impurities
Data Source
Figure 1~1a
Figure 2
Figure 3a~3c
AI summary
The invention relates to a filtration and dirt separation device (100) comprising a main body (110) wherein an inlet conduit (114), intended to receive a water flow (F) entering the filtration and dirt separation device (100), and an outlet conduit (115), intended to receive a water flow (F) leaving the filtration and dirt separation device (100), are formed; a filter cartridge (120) having a generally cylindrical shape housed in a cup-shaped container (130) removably restrained to said main body (110); a flow-diverting valve (150). The flow-diverting valve (150) is movably accommodated inside the main body (110) in a seat (116) that is in fluid communication with said inlet conduit (114), said cup-shaped container (130) and said outlet conduit (115). The flow-diverting valve (150) comprises channels (151, 152) adapted to selectively set the inlet conduit (114) in fluid communication with the cup-shaped container (130) and the filter cartridge (120), or with the outlet conduit (115) depending on its position in said seat (116).