Membrane Valve Application Device for Consistent Paint Flow
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Solution Overview
Problem
Existing application devices for liquid or viscous media, such as solvent-based paints, face issues with reproducible operation after work interruptions, leading to inconsistent line thickness and material application due to uncontrolled capillary functions and dosing limitations.
Innovation Solution
A pen-like or tube-like device with a detachable cover cap and a funnel-shaped mouthpiece featuring a snap-fitting valve carrier body with a membrane valve plate that controls the discharge of the application medium, ensuring sealing and controlled product delivery, and a conical cap design for secure sealing, along with polygonal shaking bodies for mixing, to maintain consistent application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a dosing pump is used to control application medium delivery, then material application consistency is improved, but device complexity and operational interruptions increase
Solution Approach 1:
The patent extracts the dosing pump mechanism from the application device, replacing it with a simpler membrane valve system that achieves consistent material delivery without complex pumping components. This reduces device complexity while maintaining line thickness consistency through the membrane's controlled opening and closing action.
Solution Approach 2:
The membrane valve operates automatically based on pressure differential between the reservoir and application tip, eliminating the need for external power sources or complex control systems. The system self-regulates material flow through the membrane's elastic deformation, achieving consistent application without sophisticated dosing mechanisms.
2Ease of operation
If capillary action is used to guide application medium, then device simplicity is maintained, but reproducible operation after interruptions is lost
Solution Approach 1:
The membrane valve acts as an intermediary between the reservoir and application tip, providing controlled material delivery that is not dependent on capillary action. This intermediary mechanism ensures reproducible operation after interruptions by actively regulating flow based on pressure differential rather than relying on passive capillary forces that may be affected by interruptions.
3Loss of substance
If a valve is added to control product flow, then material loss is prevented, but device complexity increases
Solution Approach 1:
The patent employs a flexible membrane as a valve element that controls product flow through its elastic deformation. This thin film approach prevents material loss through effective sealing while maintaining simplicity, as the membrane's flexibility allows it to respond to pressure differential without requiring complex mechanical valve structures.
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 enables safe, simple, and reproducible handling of the application medium, preventing material loss and ensuring consistent line thickness and application quality even after interruptions, by controlling the flow and sealing effectively.
Implementation Method 1
a membrane valve plate (6) which is connected to a through-opening of the valve carrier body (5), so that the discharge quantity of the application medium can be controlled
Implementation Method 2
the end of the mouthpiece accommodating the cap has a multiple conical or stepped conical shape with a cavity for accommodating the application tip
Implementation Method 3
polygonal shaking bodies for mixing
Data Source
AI summary
The invention relates to an application device having a pin-like or tube-like receiving element for a liquid or viscous application medium, in particular solvent-containing paints. Provided on the receiving element are means for fixing a metering and dispensing device of the application medium, and a detachable covering cap. Also present is a funnel-like mouthpiece, which receives an application tip that is also replaceable. According to the invention, in the mouthpiece there is formed a hollow space which is open to the receiving element and which receives a valve carrier element that can be fixed in a latching manner, wherein the valve carrier element in turn can be connected in a form-fitting and/or force-fitting manner to the receiving element and an outlet opening present there for the application medium. Furthermore, the valve carrier element has a first annular groove, into which a diaphragm valve platelet can be inserted, which is connected to a passage opening in the valve carrier element, so that the output quantity of the application medium can be controlled, wherein the diaphragm valve platelet simultaneously seals off the valve carrier element with respect to the interior of the mouthpiece.