Plastic Restoring Element Pressure Controller for Phlegm Suction
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Solution Overview
Problem
Existing pressure controllers for phlegm sucking devices using metal springs are prone to corrosion and interference with electronic devices, requiring complex assembly and reducing device lifespan.
Innovation Solution
A pressure controller with a plastic restoring element and control valve, where the valve bolt and stem allow communication between gas inlet and outlet tubes, avoiding metal corrosion and simplifying assembly by forming the valve body in one piece with non-metallic, low-reactivity materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal spring is used as a restoring element in the pressure controller, then the structural strength and restoring force are improved, but the device becomes prone to corrosion, reacts with gas and liquid, and interferes with electronic devices
Solution Approach 1:
The patent changes the material parameter from metal to plastic, specifically using a plastic restoring element that provides sufficient restoring force while being chemically inert. This material substitution eliminates corrosion and chemical reaction issues while maintaining the necessary mechanical function through the plastic's elastic properties
Solution Approach 2:
The patent employs composite material design by integrating the restoring element with the valve body as a single molded component. This composite structure combines the functional requirements of restoration and valve control in one piece, eliminating the need for separate metal springs and their associated problems
2Reliability
If a metal spring restoring element is used, then the restoring function is achieved, but the assembly becomes complex requiring multiple separation elements
Solution Approach 1:
The patent merges the restoring element and valve body into a single integrated component molded as one piece. This consolidation eliminates the need for separate metal springs and multiple separation elements, significantly simplifying the assembly while maintaining the restoring function through the integrated plastic structure
Solution Approach 2:
The patent segments the valve mechanism into functional zones within the single molded piece, with the restoring element forming a distinct functional zone that separates the gas flow paths. This internal segmentation achieves the separating function without requiring external metal components
3Strength
If metal material is used in the pressure controller, then structural integrity is maintained, but the device lifespan is reduced due to deterioration and rust
Solution Approach 1:
The patent changes the material composition parameter from metal to plastic, which provides sufficient structural integrity for the valve function while being chemically resistant to deterioration. This material parameter change eliminates rust and corrosion that would otherwise reduce device lifespan
Solution Approach 2:
The patent adopts a design philosophy of using plastic materials that are inherently resistant to deterioration, effectively creating a longer-lasting component that doesn't rust or corrode. The plastic restoring element and valve body remain stable over time without the deterioration issues of metal
4Force
If metal material is used in the pressure controller, then the restoring element provides sufficient force, but electronic devices are interfered with
Solution Approach 1:
The patent changes the material parameter from conductive metal to non-conductive plastic, which maintains the restoring force through the plastic's elastic properties while eliminating electrical conductivity. This parameter change prevents interference with adjacent electronic devices
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 provides a stable, long-lasting pressure controller that avoids gas and electronic interference, ensuring safety and reducing manufacturing complexity and costs.
Implementation Method 1
the plastic restoring element allows the control valve to move with the decreased height and provide a resilience for recovery
Data Source
AI summary
A pressure controller for a phlegm sucking device includes a seat body, a press element and a control valve. The seat body has a containing space, a gas inlet tube and a gas outlet tube interconnected with each other. The control valve is disposed in the containing space. An upper end and a bottom end of the control valve abut the press element and an upper portion and a bottom of the seat body respectively for blocking or allowing communication between the gas inlet tube and the gas outlet tube. The control valve includes a plastic restoring element. When the plastic restoring element is deformed to have a decreased height, the plastic restoring element allows the control valve to move and provide a resilience. The control valve blocks the communication between the gas inlet tube and the gas outlet tube when the plastic restoring element is not deformed.