Elastic Dosing Valve Sealing to Prevent Finger Injury
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Solution Overview
Problem
Existing metering valves in the food industry pose a risk of serious injury to operating personnel due to high closing forces and sharp edges, necessitating the use of safety measures that hinder production speed and accessibility.
Innovation Solution
A metering valve design featuring an elastic material at its front end, which adapts to the geometry of a finger upon contact, distributing force evenly and eliminating the risk of severe injury, with the elastic material also serving as a sealing mechanism, and a controlled closing force to prevent injuries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional metering valves with sharp edges and high closing forces are used, then dosing precision is maintained, but the risk of serious injury to operating personnel increases
Solution Approach 1:
The patent changes the physical parameter of the valve element material from rigid to elastic, with a specified hardness range of 30-80 Shore A. This parameter change allows the valve to maintain dosing precision through controlled elasticity while eliminating sharp edges that cause injury, directly resolving the contradiction between reliability and safety
Solution Approach 2:
The patent applies elastic material specifically to the valve element that contacts the product and potential finger areas, while maintaining the overall valve structure for dosing function. This local application of elasticity at critical contact points prevents injury without compromising the dosing precision of the valve system
2Object-affected harmful factors
If safety measures such as protective enclosures and mechanical barriers are installed, then injury risk is reduced, but production speed and accessibility deteriorate
Solution Approach 1:
The patent converts the potentially harmful high closing force and sharp edges into a beneficial elastic deformation mechanism. The elastic valve element naturally absorbs excess force and prevents injury without requiring external safety devices, thus maintaining production speed while eliminating injury risk
Solution Approach 2:
The patent extracts the safety function from separate protective enclosures and mechanical barriers and integrates it directly into the valve element itself. By making the valve element elastic, the safety function is built-in, eliminating the need for additional safety measures that would hinder productivity
3Object-affected harmful factors
If safety sensors and mechanical barriers are used to prevent finger contact, then injury prevention is improved, but device complexity and handling difficulty increase
Solution Approach 1:
The patent extracts the safety function from complex external safety systems (sensors, barriers, enclosures) and integrates it into the basic valve element material property. The elastic material inherently prevents injury without requiring additional safety components, significantly reducing device complexity
Solution Approach 2:
The elastic valve element provides its own safety function through its material properties. The valve element self-regulates the closing force and prevents finger injury through elastic deformation, eliminating the need for external safety systems and reducing overall device complexity
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 design ensures safe operation by minimizing pressure on the finger, preventing severe injuries and maintaining production efficiency by eliminating the need for cumbersome safety measures.
Implementation Method 1
The valve element has an elastic material at its front end area when viewed in the closing direction. This means that, for example, if a finger reaches through the valve opening into the interior of the valve housing as the valve element moves in the closing direction, the elastic material can easily adapt to the finger's geometry upon contact, thus enabling an even distribution of force.
Implementation Method 2
Because the elastic material is located in the front end region, it can also advantageously serve as a sealing material for the valve opening.
Data Source
Figure 1~3
Figure 2a~2c
Figure 4a~4c
AI summary
The invention relates to a metering valve (1) for metering liquid or pasty masses, in particular foodstuffs, with a movable valve element (2) that opens and closes a valve opening (3) through which a portion is ejected, wherein the valve element (2) has an elastic material (6) at its front end region (2b) viewed in the closing direction (S).