Composite Plastic Valve Structure to Prevent Distortion

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Solution Overview

Problem

Conventional valves made of metal are difficult to process and expensive to manufacture, while valves made of plastic are prone to distortion when combined with pipes or other valves.

Innovation Solution

A valve design incorporating a plastic main body with embedded metal members that surround a fluorine resin liner, providing structural support and preventing distortion while maintaining ease of processing and reducing manufacturing costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the valve is made of metal, then the strength and resistance to distortion are improved, but the manufacturing cost increases and processing difficulty increases

Engineering Contradiction:
ImprovestrengthVSAvoidmanufacturing cost
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The valve body is constructed as a composite structure combining plastic material for the main body with embedded metal members (such as metal flanges or reinforcement ribs) strategically positioned to provide strength where needed. This composite approach allows the valve to achieve metal-level strength and distortion resistance while maintaining the cost-effectiveness and ease of processing associated with plastic manufacturing.

Inventive Principle:
Principle #40Composite materials

2Stability of the object's composition

If the valve is made of metal, then the resistance to distortion is improved, but the processing difficulty increases

Engineering Contradiction:
Improveresistance to distortionVSAvoidprocessing difficulty
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

Metal members are strategically positioned within the plastic valve body at specific locations where strength and distortion resistance are most needed, such as at flange connections or high-stress areas. This localized reinforcement approach provides metal-level stability where required while allowing the majority of the valve body to be manufactured using easier plastic processing methods.

Inventive Principle:
Principle #3Local quality

3Ease of manufacture

If the valve is made of plastic, then the manufacturing cost decreases and ease of processing is improved, but the resistance to distortion worsens

Engineering Contradiction:
Improveease of processingVSAvoidresistance to distortion
Core Design Contradiction:
Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The valve combines plastic as the primary material for cost-effective manufacturing with embedded metal members that provide the necessary distortion resistance. The plastic body can be easily molded and processed, while the integrated metal reinforcements prevent distortion during installation and operation, achieving both ease of processing and structural stability.

Inventive Principle:
Principle #40Composite materials

4Ease of manufacture

If the valve is made of plastic, then the manufacturing cost decreases, but the strength decreases

Engineering Contradiction:
Improvemanufacturing costVSAvoidstrength
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The valve body utilizes a composite construction where plastic provides the cost-effective base structure and embedded metal members (such as flanges or internal reinforcement elements) provide the necessary strength. This allows the valve to be manufactured at plastic-level costs while achieving metal-level strength at critical locations through the hybrid material approach.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentEP3708889B1Valve capable of preventing distortion
Publication Date: 2025.07.30 FINE FLOW CO LTD
  • EP3708889B1 patent drawingFigure 1~2
  • EP3708889B1 patent drawingFigure 3~4
  • EP3708889B1 patent drawingFigure 5~6

AI summary

Various valves capable of preventing distortion are disclosed. The valve comprises a metal member configured to have at least two sub metal members and a main body. Here, the sub metal members are included in the main body, and the main body is formed of plastic.