Fluid Feeding Device Isolation via Sealed Container
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Solution Overview
Problem
Existing fluid feeding devices face challenges as the transmitted material directly contacts the pump, requiring special materials to prevent pollution and corrosion, leading to increased costs and complexity due to the need for dedicated pumps for different materials.
Innovation Solution
A fluid feeding device design that transfers fluid without direct contact with the pump, using a fluid driving device to compress or expand a sealed fluid delivery inner container, which is isolated from the pump, allowing for pressure changes without direct fluid-pump interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmitted material directly contacts the pump, then the pump can transfer the fluid, but the pump requires special materials to prevent pollution and corrosion
Solution Approach 1:
The system is divided into separate functional components: the pump transfers pressurizing fluid through a pressurizing-fluid pipe, while the transmitted fluid is contained in a sealed container. This segmentation allows each component to use materials optimized for its specific function without requiring special materials throughout the entire system.
Solution Approach 2:
The pressurizing fluid acts as an intermediary medium that transmits force from the pump to the sealed container without direct contact between the pump and the transmitted fluid. This intermediary approach enables the pump to use standard materials while still achieving fluid transfer.
2Reliability
If different transmitted materials use dedicated pumps, then material pollution is prevented, but the investment and operating cost increase
Solution Approach 1:
The pump becomes a universal component that can handle different transmitted materials by simply changing the sealed container and pressurizing fluid, rather than requiring dedicated pumps for each material type. This multi-functionality reduces the number of pumps needed while maintaining pollution prevention.
Solution Approach 2:
The sealed container acts as a disposable or replaceable component that contains the transmitted material. Instead of cleaning and reusing expensive pumps for different materials, the system uses inexpensive sealed containers that can be replaced, reducing overall system cost and complexity.
3Reliability
If the pump uses special materials to prevent corrosion and pollution, then the transmitted fluid is protected, but the material selection becomes difficult
Solution Approach 1:
The system segments the fluid handling function into separate components with appropriate materials: the sealed container uses materials compatible with the transmitted fluid, while the pump uses standard materials for the pressurizing fluid. This segmentation simplifies material selection for each component.
Solution Approach 2:
The pressurizing fluid serves as an intermediary that allows the pump to use standard, easy-to-manufacture materials while still protecting the transmitted fluid through the sealed container design. This eliminates the need for complex material selection in the pump.
4Volume of moving object
If the injection pump volume is limited, then the device size is compact, but the pump must be replaced several times
Solution Approach 1:
The pump is designed as a universal component with sufficient volume capacity to handle multiple different transmitted materials through the replaceable sealed container system. This eliminates the need for frequent pump replacements while maintaining compact device size.
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 design reduces the risk of pollution, simplifies material selection for the driving mechanism, and enhances performance by allowing the device to handle various fluids without the need for specialized materials, applicable in high-pressure applications like chromatography and medical infusion.
Implementation Method 1
using a fluid driving device to compress or expand a sealed fluid delivery inner container, which is isolated from the pump, allowing for pressure changes without direct fluid-pump interaction
Data Source
AI summary
A fluid feeding device utilizes one or more fluid driving devices to cause pressure changes in an outer container of one or more fluid transfer units to change the pressure in a fluid delivery inner container within the outer container in order to expel or intake a transmitted fluid from or into the inner container, exempting the fluid feeding device from directly contacting the transmitted fluid.