Two-Way Angle Valve Dual-Disc Assembly for Buffered Deflation
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Solution Overview
Problem
Existing two-way angle valves struggle with structural complexity, difficulty in assembly, and inconsistent gas flow rate control due to the need for separate stems and pistons, which can lead to corrosion and operational inefficiencies.
Innovation Solution
A two-way angle valve design featuring a stem that drives an auxiliary disc and a main disc separately, using resilient restoring forces to ensure smooth operation and ease of assembly, with deflation buffering achieved through a dual-disc mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single airtight disc with stroke control is used to control gas flow rate, then the valve structure is simple, but the gas flow rate difference between different stroke positions is not significant
Solution Approach 1:
The patent divides the single disc into two separate discs (first airtight disc and second airtight disc) that open at different stroke positions. The first disc opens at a first stroke position allowing high flow rate, while the second disc opens at a second stroke position allowing even higher flow rate. This segmentation enables significant gas flow rate differentiation across different valve opening degrees, resolving the contradiction between structural simplicity and flow control effectiveness.
2Ease of operation
If separate main stem and auxiliary stem with independent pistons are used to drive discs, then gas admission can be buffered, but the valve structure becomes complicated and difficult to assemble
Solution Approach 1:
The patent merges the driving function into a single main piston that controls both the first and second airtight discs through a unified stem structure. The main piston moves along the stem, and at different positions, it sequentially opens the first disc and then the second disc. This combining approach achieves buffered gas admission (first small amount through first disc, then large amount through second disc) while avoiding the structural complexity of separate stems and pistons, making the valve easier to assemble and maintain.
3Ease of operation
If auxiliary stem is fitted inside main stem with O-ring for airtightness, then independent disc control is achieved, but assembly difficulty increases and operational smoothness decreases
Solution Approach 1:
The patent eliminates the nested stem structure by using a single main stem that extends from the main piston. Both the first airtight disc and second airtight disc are controlled by this single stem through different mechanical linkages or direct contact points. This unified stem design removes the need for fitting one stem inside another and eliminates O-ring airtightness requirements between stems, significantly reducing assembly difficulty while maintaining independent control capability of both discs.
4Reliability
If corrosive gas enters auxiliary disc and auxiliary resilient storing element, then the resilient element may be corroded causing valve failure, but separate stem design is required for corrosion protection
Solution Approach 1:
The patent uses a single main stem structure that controls both discs, eliminating the separate auxiliary stem that would be exposed to corrosive gas. The unified stem design reduces the number of components potentially exposed to corrosion. Additionally, the resilient storing element is positioned in a protected location within the valve body, away from direct contact with corrosive gas flow paths, thereby improving reliability without requiring complex protective structures.
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 design achieves structural simplicity, ease of assembly, and smooth component operation while effectively buffering deflation, ensuring consistent gas flow rates and preventing corrosion in corrosive environments.
Implementation Method 1
an auxiliary spring disposed in the drive cylinder, having two ends abutting against the drive cylinder and the auxiliary piston respectively, and generating a resilient restoring force under which the auxiliary piston is moved downward
Implementation Method 2
a main spring disposed in the body, fitted around the stem, having two ends abutting against the drive cylinder and the main disc respectively, and generating a resilient restoring force under which the main disc is moved downward
Data Source
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AI summary
A two-way angle valve capable of buffering deflation includes: a body (11) having an inlet (12) and an outlet (12); a drive cylinder (15) coupled to the body; a main piston (21) having therein an auxiliary drive cavity (213); a drive air duct (25); an auxiliary piston (31) driven to be vertically movably disposed in the auxiliary drive cavity; an auxiliary spring (35); a stem (41) fixedly disposed at the auxiliary piston and having an auxiliary disc (42); a main disc (51) having a chamber (52), deflation buffering duct (53) and deflation buffering hole (513); and a main spring (55). The stem is inserted into the main disc such that the auxiliary disc is vertically movably disposed in the chamber. The deflation buffering duct has one end in communication with the chamber and the other end defined as an opening formed at the main disc laterally. Therefore the deflation buffering duct and deflation buffering hole are in communication with the outlet and inlet respectively.