Discontinuous Liquid Mixing via Timing Valve
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Solution Overview
Problem
Existing mixing devices for two- or multi-component wet coating systems face challenges in achieving homogeneous mixing concentrations, especially under high hydraulic pressures and fluctuating conditions, leading to inefficiencies and high design and ergonomic requirements.
Innovation Solution
A method and device that utilize a discontinuous feed of a feed component into a parent component under constant hydraulic pressure, with a timing valve and throttle device to control the feed component's flow, ensuring a more homogeneous mixing ratio without requiring complex control systems or high design outlay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If discontinuous feed of feed component is used to achieve homogeneous mixing, then mixing concentration homogeneity is improved, but device complexity increases due to required control systems and timing valves
Solution Approach 1:
The patent implements periodic action by using a timing valve to create discontinuous feed intervals for the feed component. The valve alternates between open and closed states, creating periodic pulses of feed component that mix with the continuous parent component flow. This periodic interruption and resumption of feed creates homogeneous mixing through controlled packet formation and dispersion, resolving the contradiction by achieving homogeneity through time-based periodic control rather than complex continuous regulation systems
Solution Approach 2:
The patent applies segmentation by dividing the feed component flow into discrete packets or segments through the timing valve. Instead of continuous feed, the feed component is delivered in separated portions that are interspersed with parent component flow. This segmentation creates a packet sequence that mixes more uniformly, achieving homogeneous concentration while using a relatively simple valve-based mechanism rather than complex control systems
2Device complexity
If continuous feed of feed component is used to maintain stable flow, then device complexity is reduced, but mixing homogeneity deteriorates under fluctuating hydraulic conditions
Solution Approach 1:
The timing valve creates periodic feed intervals that are less sensitive to hydraulic fluctuations. By interrupting the feed in regular intervals, the system allows pressure to stabilize between pulses, reducing the impact of fluctuating conditions. The periodic nature of the feed ensures that each packet is delivered under relatively consistent conditions, maintaining mixing homogeneity without requiring complex continuous control systems
Solution Approach 2:
The system dynamically adapts to hydraulic conditions by using a simple timing-based valve control rather than complex continuous regulation. The discontinuous feed allows the system to respond naturally to pressure variations, with each feed interval being independent. This dynamic approach maintains mixing quality under fluctuating conditions while keeping the control mechanism simple
3Productivity
If high delivery pressure is used to maintain flow continuity, then productivity is improved, but mixing homogeneity worsens due to packet sequence formation
Solution Approach 1:
The timing valve creates periodic feed intervals that work effectively under high delivery pressure. During the open intervals, the high pressure ensures rapid delivery of feed component packets, maintaining productivity. During closed intervals, the pressure builds up and then releases in controlled pulses, creating homogeneous mixing. This periodic action reconciles high pressure delivery with improved mixing by using the pressure pulses themselves to create uniform distribution
Solution Approach 2:
The system maintains continuous useful action by keeping the parent component flow continuous while adding discontinuous feed. The high delivery pressure ensures continuous flow of the main component, maintaining productivity. The discontinuous feed component is integrated into this continuous flow, creating homogeneous mixture without interrupting the overall delivery process. This approach maintains productivity while improving mixing through the contrast between continuous and discontinuous flows
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 approach achieves a more homogeneous mixing concentration and higher variability in mixing ratios, reducing the need for expensive adjustments and maintaining stability under varying hydraulic conditions, while simplifying the design and operation of the mixing process.
Implementation Method 1
an on/off timing valve for closing or opening the feed line and therefore for the discontinuous feed of the feed component
Implementation Method 2
a throttle device for changing the passage cross-section of the feed line
Implementation Method 3
The at least two components are put under a hydraulic pressure by separate pressure generators, such as piston pumps
Implementation Method 4
The mixing block and the mixing line to the delivery nozzle serve to mix the packet sequence and to distribute the component concentration of the main flow as uniformly as possible
Data Source
AI summary
A method for mixing at least two liquid components of a two- or multi-component wet coating system, wherein a feed component under a first hydraulic pressure set at constant is fed discontinuously through a variable passage cross-section to a parent component under a second hydraulic pressure set at constant. An actual feed quantity of the feed component is detected and the feed quantity of the feed component is regulated with respect to a target feed quantity for the feed component in such a way that a timing cycle of the discontinuous feed and the passage cross-section for the feed component are influenced.