Composite Plastic Valve Flange to Prevent Connection Distortion
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Solution Overview
Problem
Conventional plastic valves are prone to distortion when connected, leading to twisting and potential leaks during pipe connections.
Innovation Solution
Incorporating a metal member with protrusions in the flange member of the plastic valve, formed through insert molding, to minimize distortion forces and prevent twisting during connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic valve is made entirely of plastic material, then manufacturing simplicity and cost-effectiveness are improved, but distortion and twisting occur during connection to pipes
Solution Approach 1:
The flange member is constructed as a composite structure combining plastic and metal materials. The metal member (such as a metal ring or embedded metal component) is integrated within the plastic flange member to provide enhanced mechanical strength and distortion resistance during pipe connection, while the plastic portion maintains manufacturing simplicity and cost-effectiveness
Solution Approach 2:
Instead of making the entire valve from composite materials, the metal reinforcement is applied locally only to the flange member where connection and distortion resistance are critical. This localized application maintains the overall simplicity of manufacturing while providing targeted improvement in distortion resistance
2Stability of the object's composition
If a metal member is added to the flange member to prevent distortion, then connection stability is improved, but device complexity increases
Solution Approach 1:
The metal member is merged with the flange member through integration techniques such as embedding, overmolding, or mechanical interlocking. This merging creates a unified component that provides both distortion resistance and connection stability without requiring separate assembly steps or additional parts
Solution Approach 2:
The composite structure of plastic and metal in the flange member provides enhanced connection stability while maintaining relatively simple manufacturing processes through techniques like insert molding or two-shot molding, thus limiting the increase in device complexity
3Ease of manufacture
If the flange member is made entirely of plastic, then ease of manufacture is improved, but the force corresponding to distortion is insufficient
Solution Approach 1:
The flange member uses a composite structure where the metal component provides high strength and stiffness to resist distortion forces, while the plastic component maintains ease of manufacture and corrosion resistance. The combination achieves both manufacturing ease and sufficient distortion resistance force
Solution Approach 2:
The metal reinforcement is strategically placed in the flange member where distortion forces are most likely to occur, such as at the connection interface or in high-stress regions. This localized reinforcement provides sufficient distortion resistance force while maintaining overall manufacturing ease
Data Source
AI summary
A plastic valve for preventing distortion is disclosed. The plastic valve comprises a connection member made up of plastic, a case member formed on an outer surface of the connection member, and a flange member made up of plastic and formed at an end part of the connection member. A pipe is connected by being inserted into a hole of a central part of the connection member and a distortion prevention member for minimizing a force corresponding to distortion applied in a direction opposed to a direction of the connection is formed in the flange member. The connection member is made up of fluoride resin and the case member is made up of engineering plastic.