Fuel Filter Valve Body Guide Ribs Prevent Rotation
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Solution Overview
Problem
Existing fuel filter elements for diesel engines do not effectively prevent the rotation and wear of valve bodies, leading to potential air penetration into fuel lines and inefficient filtration.
Innovation Solution
A fuel filter element with a screen fabric filter medium and a support tube, featuring a valve body guide with radial support ribs that prevent the valve body from being pushed through the fluid channel, ensuring a defined position and minimizing flow restriction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the valve body is allowed to move freely in the fluid channel, then the flow cross section is maximized, but the valve body rotates and wears due to lack of positioning
Solution Approach 1:
The support rib acts as an intermediary element between the valve body and the fluid channel wall. It provides positioning and stabilization functions while minimizing interference with the fluid flow. The rib's specific geometry and positioning allow it to prevent rotation without creating significant flow restriction, thus mediating between the conflicting requirements of flow maximization and stability.
Solution Approach 2:
The support rib extends radially into the fluid channel from the channel wall, utilizing the radial dimension to provide positioning. This dimensional approach allows the valve body to be constrained in rotational movement while maintaining adequate flow cross-section in the axial and radial flow directions. The rib projects only partially into the channel rather than bridging it completely.
2Reliability
If the support rib projects deeply into the fluid channel to prevent valve body rotation, then valve body positioning is improved, but flow restriction increases
Solution Approach 1:
The support rib is designed with specific local geometric properties - it projects radially into the fluid channel only to the extent necessary for positioning, not bridging the entire channel. This localized intervention provides the needed positioning function while minimizing impact on the overall flow cross-section. The rib's dimensions and positioning are optimized to achieve positioning without excessive flow restriction.
3Productivity
If no support structure is provided for the valve body, then flow cross section is maximized, but faulty mounting and rotation occur leading to wear
Solution Approach 1:
The support rib serves as a minimal intervention intermediary that guides and positions the valve body during mounting and operation. It prevents faulty mounting by providing a defined positioning interface and prevents rotation during operation, all while maintaining maximum possible flow cross-section. The rib's design balances the need for mounting reliability with flow efficiency.
Data Source
AI summary
A fuel filter element has a screen fabric as a filter medium and a support tube supporting the screen fabric. A valve body guide for guiding a spherical valve body is provided. The valve body guide has a fluid channel and one or more support ribs for supporting the spherical valve body. The support ribs extend along a longitudinal direction of the fluid channel and project radially into the fluid channel. A filter assembly with such a fuel filter element is provided. The filter assembly has a ball valve with spherical valve body and a filter housing with a valve seat for the spherical valve body of the ball valve.