Asymmetrical Metering Valve Loading for Wear and Sealing Control
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Solution Overview
Problem
Electromagnetically actuated metering valves for liquids and gases face challenges in maintaining sealing tightness and accuracy due to high wear and manufacturing/assembly tolerances, leading to inconsistent dosing and reduced service life.
Innovation Solution
The metering valve features a magnet armature and valve closing element designed as a structural unit with an asymmetrical load, utilizing an eccentrically arranged magnetic core and springs to achieve a defined, non-plane-parallel position, reducing wear and improving dosing accuracy by distributing forces unevenly and influencing opening and closing behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve closing element is guided and centered to ensure optimal alignment, then sealing tightness is improved, but manufacturing and assembly complexity increases
Solution Approach 1:
The magnetic core is designed with an asymmetrical shape featuring an eccentric recess that generates a defined preferred position for the magnetic armature. This asymmetry creates a targeted asymmetrical load that compensates for manufacturing and assembly tolerances, ensuring consistent sealing contact between the valve closing element and valve seat body without requiring complex guiding mechanisms.
2Duration of action of stationary object
If the valve closing element is guided to minimize wear, then service life is improved, but manufacturing precision requirements increase
Solution Approach 1:
The invention changes the load distribution parameter by introducing an asymmetrical magnetic core with eccentric recess. This creates a defined preferred position that compensates for manufacturing tolerances in the guiding structures, reducing wear on the valve closing element while maintaining acceptable manufacturing precision levels.
3Duration of action of stationary object
If the magnetic armature and valve closing element are subjected to asymmetrical load, then wear is reduced and service life is improved, but dosing accuracy requirements become more stringent
Solution Approach 1:
The asymmetrical magnetic core with eccentric recess establishes a defined preferred position for the magnetic armature before the valve operation begins. This preliminary positioning compensates for manufacturing and assembly tolerances, ensuring that the asymmetrical load does not negatively impact dosing accuracy while still reducing wear and extending service life.
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
This design enhances the stability and precision of the valve's operation, reducing wear and leakage, and simplifies monitoring, resulting in improved long-term performance and accuracy.
Implementation Method 1
a magnetic armature movable relative to the valve seat body... and a magnetic core located opposite the magnetic armature at a working air gap
Implementation Method 2
at least one spring that biases the magnetic armature and the valve closing element in the closing direction
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
The invention relates to an electromagnetically actuatable metering valve for liquids and/or gases, comprising: a valve housing (1); a valve seat element (2) which is connected to the valve housing (1) and in which at least one outlet opening (3) is formed; and a magnetic armature (4) which can move in a stroke-like manner relative to the valve seat element (2) and which is securely connected to a plate- or disc-shaped valve closing element (5) for opening and closing the at least one outlet opening (3) or which forms same; as well as a magnetic core (6) opposite the magnetic armature (4) at a working air gap (14) and at least one spring (7) pretensioning the magnetic armature (4) and the valve closing element (5) in the closing direction. According to the invention, the magnetic armature (4) and the valve closing element (5) are loaded in a targeted asymmetrical manner and/or are shaped in a targeted asymmetrical manner. The invention also relates to a method for operating a metering valve for liquids and/or gases.