Coupling Device Plug for Liquid Tank Gas-Liquid Separation
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Solution Overview
Problem
Existing coupling devices for liquid tanks are complex to assemble due to numerous components and prone to liquid splashing during use, as external pressure on inner-liner bags causes gas to accumulate and mix with the liquid during discharge.
Innovation Solution
A coupling device with a plug and fitted member featuring a cylindrical design, including separate liquid, gas, and fluid passages, which simplifies assembly and prevents gas and liquid from being discharged together by using fluid-passage unsealing and liquid-passage sealing mechanisms, and a socket with a cylindrical shape that fits securely to prevent errors in attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate components are used to form liquid passage and gas passage in plugs, then the passages can be formed, but the assembling process becomes complicated
Solution Approach 1:
The patent combines multiple separate components (liquid passage component and gas passage component) into a single integrated plug structure. The plug is designed with both liquid passage and gas passage formed within one component, eliminating the need for separate assembly of multiple parts and simplifying the overall assembly process while maintaining reliable passage formation.
2Productivity
If external pressure is supplied to the inner-liner bag, then liquid can be discharged, but gas accumulates and causes liquid to splash out
Solution Approach 1:
The patent introduces gas into the container before applying external pressure for liquid discharge. This preliminary gas introduction equalizes the pressure inside and outside the inner-liner bag, preventing gas accumulation that would otherwise cause the bag to deform and liquid to splash out during discharge operations.
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 solution reduces the number of components, simplifies assembly, prevents fine powder formation, and effectively prevents liquid splashing during discharge by managing gas and liquid separation, thus enhancing operational efficiency and reducing costs.
Implementation Method 1
a fluid passage communicating with a space between the container and the flexible container and through which fluid is let in and out
Implementation Method 2
a liquid passage communicating with the liquid and through which the liquid is let in and out
Implementation Method 3
a gas passage communicating with the gas and through which the gas is let in and out
Data Source
AI summary
A coupling device which is provided at a mouth 4a of a container accommodating a flexible container containing liquid and gas and which includes a plug 11 and a fitted member to be fitted in the plug 11, wherein the plug 11 includes a plug cylinder 11a, a liquid passage 16 communicating with the liquid and through which the liquid is let in and out, gas passages 17 communicating with the gas and through which the gas is let in and out, and fluid passages 19 communicating with a space between the container and the flexible container and through which fluid is let in and out.