Aspiration Fluid Injection System Using Venturi Pressure Differential
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Solution Overview
Problem
Current fluid injection systems face challenges in accurately measuring and controlling the injection rate, particularly for aspiration-type systems, and struggle with injecting both liquid and dry products effectively without causing dilution or plugging, and require frequent maintenance due to mechanical components.
Innovation Solution
The system employs an aspiration-type injection system with adjustable bypass connections and high flow venturi fittings to create a differential pressure, allowing for precise measurement and control of injection rates without electronic or mechanical sensors, and includes dual gauge metering heads for switching between liquid and dry products, preventing dilution and plugging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If metering pumps are used to inject a predetermined amount of product, then the injection amount is controlled, but the system is subject to wear and mechanical failure
Solution Approach 1:
The patent replaces mechanical metering pumps with an aspiration-type injection system that uses fluid dynamics (venturi effect) to achieve product injection. This eliminates mechanical moving parts, seals, and electronic components, thereby eliminating wear and mechanical failure while maintaining injection control through fluid flow principles.
Solution Approach 2:
The system uses hydraulic principles by employing a venturi device where fluid flow creates a pressure differential that aspirates the product into the stream. This hydraulic approach replaces mechanical pumping action, achieving reliable operation without mechanical contact or wear.
2Adaptability or versatility
If water powered pumps are used to adjust automatically to flow changes, then flow adaptation is achieved, but frequent maintenance is required due to seal points
Solution Approach 1:
The patent eliminates water powered pumps and their associated mechanical seals by using an aspiration system driven by the fluid stream itself. The venturi device creates automatic flow adaptation through pressure differentials without any mechanical seals or moving parts that would require maintenance.
Solution Approach 2:
The system uses the fluid stream's own energy to drive the injection process. The venturi effect automatically adapts to flow changes without external control, and the system self-regulates injection rates based on stream conditions without requiring maintenance.
3Productivity
If siphon devices are used to create venturi suction, then injection is achieved, but high pressure is required and fluid stream volume is reduced
Solution Approach 1:
The patent uses a bypass connection that allows a portion of the fluid stream to bypass the storage tank while still providing sufficient flow to create the venturi effect. This partial action approach maintains adequate stream volume while achieving the necessary suction for injection without requiring high pressure.
Solution Approach 2:
The bypass connection acts as an intermediary that regulates fluid flow to the venturi device, ensuring sufficient flow velocity is maintained without depleting the overall stream volume. This mediator allows the system to achieve injection capability while preserving fluid stream volume.
4Manufacturing precision
If outlet port connection is extended to bottom of storage tank, then consistent injection rate is achieved, but air pockets form requiring manual venting
Solution Approach 1:
The patent adds a vertical dimension by extending the outlet port to the bottom of the storage tank, allowing consistent product withdrawal regardless of liquid level. This dimensional change enables air pockets to rise to the top while product is drawn from the bottom, achieving consistent injection rates without manual venting.
Solution Approach 2:
The system segments the storage tank into functional zones: the outlet at the bottom for consistent product withdrawal, the middle section for product storage, and the top section for air venting. This segmentation allows simultaneous achievement of consistent injection rates and automatic air removal.
5Stability of the object's composition
If inlet port is extended to near bottom of storage tank, then product mixing is maintained, but system complexity increases
Solution Approach 1:
The patent merges the inlet port extension with the product withdrawal function by positioning the inlet near the bottom where product is drawn off. This combination achieves both mixing (by directing flow through the product) and consistent withdrawal without adding separate agitation mechanisms, thereby maintaining composition stability without increasing system 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
This solution enables accurate, continuous injection of both liquid and dry products with reduced maintenance needs, as it prevents dilution and plugging, and allows for flexible installation and operation across various flow rates and pressures.
Implementation Method 1
the arc at the inlet probe and the angled cut at the outlet probe create a pressure differential for diverting water into and out of the storage tank
Implementation Method 2
high flow venturi fittings to create a differential pressure
Data Source
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AI summary
Fluid injection system for dispensing a solution into a fluid flow in a flow line, the fluid injection system including a storage tank having product to be dispensed therein; an inlet connection diverting fluid from the flow line into the tank; an outlet connection returning a mixture of fluid/product back into the flow line; a metering gauge in fluid communication with the inlet connection measuring water flowing into the tank; and a metering head connected to the storage tank and having multiple ports for connection to the inlet connection depending on whether the product to be dispensed is in liquid dry form. The inlet connection includes an inlet probe having an opening defined by an arc at a downstream side. The outlet connection includes an outlet probe having an opening having an angled cut facing downstream, such that a pressure differential is created between the inlet and outlet probes.