Pressure Control System Elastic Disc Sealing Wear
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pressure control systems for fluid dispensing containers face issues with wear and damage to O-rings and other components, leading to leaks and reduced longevity due to small imperfections and reciprocating movements, which compromise the maintenance of constant excess pressure.
Innovation Solution
A pressure control system featuring a high-pressure plastic vessel with a piston and guide member, where a passageway is controlled by a valve, and a resilient mechanism ensures gas-tight closure using elastic discs and a central bore of smaller diameter than the stem, minimizing wear and facilitating easy assembly and pressurization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If O-rings are used for sealing in the pressure control device, then sealing function is achieved, but wear and damage occur leading to leaks and reduced longevity
Solution Approach 1:
The patent removes the O-ring component entirely from the sealing system. Instead of using elastomeric O-rings that are susceptible to wear and damage, the invention employs direct contact sealing between the piston stem and the central bore, and between the closure and the guide member, eliminating the problematic sealing element while maintaining effective sealing through precision machining and material selection.
2Ease of operation
If reciprocating movement is implemented for valve control, then pressure control function is achieved, but wear increases influencing longevity
Solution Approach 1:
Instead of moving the valve seat or using complex valve mechanisms, the patent inverts the approach by making the piston stem itself the sealing surface that directly contacts the central bore. The closure is pressed against the guide member by elastic means, creating a stable, wear-resistant sealing interface that eliminates the need for traditional reciprocating valve components.
3Reliability
If complex assembly structure is used for pressure control device, then sealing performance is improved, but assembly difficulty increases
Solution Approach 1:
The patent divides the pressure control device into distinct functional segments: the high-pressure vessel, the guide member with central bore, the piston with stem, and the closure. Each component is designed and manufactured independently with specific sealing surfaces, allowing for simpler individual component fabrication and easier assembly while maintaining overall sealing performance through the cumulative effect of multiple sealing interfaces.
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 system effectively maintains constant excess pressure with reduced wear and easy assembly, ensuring the longevity of the pressure control device by using elastic discs and a precise bore design to prevent leaks and enhance sealing.
Implementation Method 1
a first elastic disc which is fixed between the guide member and the closure... a second elastic disc, which is fixed to the outer rim of the guide member
Implementation Method 2
The resilient means is a second elastic disc, which is fixed to the outer rim of the guide member. By the resilient means the pressure from the stem against the central bore can be increased.
Data Source
AI summary
A pressure control system provided for maintaining a constant predetermined excess pressure in a fluid dispensing container comprises a high-pressure plastic vessel having an inner chamber, and a pressure control device having a valve and mounted on the open end of the high-pressure vessel, whereas a passageway is provided from the inner chamber to the outside, which is controlled by the valve. A piston with a protruding stem is provided in a guide member, whereas between the guide member and the piston a chamber with a gas with a reference pressure smaller than the high pressure is enclosed, and the high pressure vessel is closed by a closure with a central bore of smaller diameter than the diameter of the stem, and the piston end remote from the protruding stem is pressurized by the fluid in the fluid dispensing container.