Diaphragm Tap Valve Guide Optimization for Viscous Liquid Flow
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Solution Overview
Problem
Conventional diaphragm taps experience unacceptably slow product flow with higher viscosity (2×) liquid laundry detergents, requiring costly re-tooling to meet consumer expectations for flow rate and viscosity, while maintaining economic production.
Innovation Solution
A discharge device with a modified diaphragm tap design featuring a valve system and valve guide configuration that reduces the surface area ratio of the valve system to the orifice, including a valve guide width less than 1.15 mm and rib width less than 2.5 mm, ensuring improved flow rates for both (2×) and (1×) liquid products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional diaphragm tap design is used, then manufacturing cost is reduced, but product flow rate becomes unacceptably slow with high viscosity liquids
Solution Approach 1:
The patent applies parameter changes by modifying the valve guide dimensions (reducing width to less than 1.15 mm) and rib dimensions (reducing width to less than 2.5 mm) to optimize the surface area ratio. This allows the same tap design to accommodate both low-viscosity (1×) and high-viscosity (2×) formulations without requiring costly re-tooling, thereby improving productivity for concentrated products while maintaining ease of manufacture
Solution Approach 2:
The patent achieves universality by designing a valve guide and rib structure with optimized surface area ratio that can handle both (1×) and (2×) formulations with different viscosities. This multi-functional design eliminates the need for separate tap designs for different product concentrations, reducing manufacturing costs while maintaining acceptable flow rates for both product types
2Productivity
If valve guide surface area is reduced to improve flow rate, then product flow rate increases, but valve guidance precision may deteriorate
Solution Approach 1:
The patent carefully balances parameter changes by reducing the valve guide width to less than 1.15 mm and rib width to less than 2.5 mm, optimizing the surface area ratio to improve flow rate while maintaining sufficient guidance precision for proper valve centering during operation
Solution Approach 2:
The patent applies local quality by strategically positioning the reduced-surface-area valve guide and ribs to provide adequate centering guidance where needed while minimizing flow restriction. The asymmetric placement and dimensioning of the valve guide relative to the orifice allows sufficient guidance function with reduced overall surface area
Data Source
AI summary
A gravity discharge device for liquids, especially concentrated liquid detergents, comprises a valve guide system whose surface area optimizes liquid flow. The discharge is especially useful with concentrated (“2×”) liquid detergents, whose viscosities tend to unacceptably slow their flow rate from home-use containers, especially when the containers progressively empty after multiple uses.