Multi-Outlet Duckbill Check Valve Nozzle Mixing
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Solution Overview
Problem
Traditional 'duckbill' type check valves have limited mixing capabilities despite their effectiveness in preventing reverse flow and providing consistent exit velocity, which is essential for mixing systems.
Innovation Solution
A 'duckbill' type check valve nozzle with multiple discharge ports oriented at various angles and made of elastomeric materials, which enhances mixing efficiency by increasing the surface area of the discharged fluid and maintaining a linear relationship between headloss and flow rate, thereby improving mixing with the receiving fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional single-outlet duckbill check valve is used, then reverse flow prevention is achieved, but mixing efficiency is limited
Solution Approach 1:
The single discharge outlet is divided into multiple discharge outlets (at least two), creating multiple separate discharge streams. This segmentation allows the fluid to be distributed into multiple flows that mix more effectively with the receiving fluid, thereby improving mixing efficiency while each outlet still provides reverse flow prevention functionality
Solution Approach 2:
The discharge outlets are oriented at different angles relative to the longitudinal centerline of the nozzle, introducing angular diversity to the discharge directions. This dimensional change in flow orientation creates more complex mixing patterns and increases the surface area of discharged fluid, enhancing mixing efficiency
2Device complexity
If a fixed orifice nozzle is used, then结构简单 (structure is simple), but exit velocity varies significantly with flow rate changes
Solution Approach 1:
The nozzle incorporates a linearizing element that changes the flow parameters to achieve a linear relationship between headloss and flow rate. This parameter change ensures that exit velocity remains more consistent across varying flow rates compared to fixed orifice nozzles, improving mixing consistency without excessive structural complexity
3Ease of manufacture
If a traditional duckbill check valve with single outlet is used, then manufacturing is simple, but the surface area of discharged fluid is limited
Solution Approach 1:
The single discharge outlet is segmented into multiple discharge outlets, which collectively provide a larger total discharge surface area. This increased surface area allows more fluid to be discharged simultaneously and creates greater interaction with the receiving fluid, improving mixing efficiency while maintaining manufacturability through standardized multi-outlet configurations
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 enhanced design significantly improves mixing efficiency by creating multiple streams of discharge fluid, increasing turbulence, and maintaining consistent exit velocity, outperforming traditional fixed orifice nozzles in mixing effectiveness.
Implementation Method 1
made of elastomeric materials, which enhances mixing efficiency by increasing the surface area of the discharged fluid
Implementation Method 2
creating multiple streams of discharge fluid, increasing turbulence, and maintaining consistent exit velocity
Data Source
AI summary
A check valve nozzle having at least two discharge ports and providing improved mixing between the discharged fluid and the receiving fluid. The check valve nozzle may be of a “duckbill” type or a “pancake” type. The “duckbill” type may have discharge ports that vary in size, orientation with respect to the longitudinal centerline of the check valve nozzle, and/or construction materials. The “pancake” type may discharge the fluid from the check valve nozzle in a perpendicular, forward, or rearward direction. The check valve nozzle assembly contains a number of check valve nozzles that can vary in size, orientation with respect to the longitudinal centerline of the end cap of the assembly, and/or construction materials.