Butterfly Valve Handle and Liner Assembly for Leak-Safe Sealing

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Solution Overview

Problem

Existing butterfly valves face challenges such as potential leak paths and risks of losing sealing integrity, along with complex manufacturing processes.

Innovation Solution

The proposed butterfly valve design includes a body assembly with a disc, cog, and stem, along with a handle assembly featuring a force ring and lever, which interlock to securely position the disc relative to the body, reducing the risk of leaks and simplifying the manufacturing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional butterfly valve configurations are used, then the valve can control fluid flow, but potential leak paths and risks of losing sealing integrity occur

Engineering Contradiction:

Improvesealing integrityVSAvoidleak paths

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The valve body is divided into multiple segments or sections that can be assembled together, allowing for better sealing surfaces and reduced leak paths between components. The segmentation enables precise fitting and sealing at each interface.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A seal ring or gasket is introduced as an intermediary element between mating surfaces to prevent direct contact and potential leakage paths. This intermediary sealing element fills gaps and ensures reliable sealing integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If traditional butterfly valve designs are used, then the valve can function, but the manufacturing process becomes overly complicated

Engineering Contradiction:

Improvemanufacturing process simplicityVSAvoidvalve structure complexity

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

Multiple components are merged into fewer integrated parts where possible. For example, the disc and stem are combined as a single rotating assembly, reducing the number of separate manufacturing operations and simplifying the overall manufacturing process.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The valve body is designed with universal features and standardized interfaces that can accommodate different seal configurations and assembly variations, simplifying the manufacturing process by reducing the need for custom-designed components for each application.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12320429B2Butterfly valve

Publication Date: 2025.06.03 HAYWARD IND INC

AI summary

Exemplary embodiments are directed to butterfly valves, generally including a body assembly and handle assembly. The body assembly generally includes a body, a disc rotationally disposed inside an opening of the body, a cog, and a stem passing through the disc and the body. The handle assembly generally includes a handle body and a force ring. The stem can be rotationally interlocked relative to the disc and the handle assembly. The cog and the force ring can engage to rotationally secure the disc relative to the body. The handle assembly can include a lever and a grip, the force ring, the lever and the grip being pivotally secured relative to each other. The body can include a male radial protrusion and the body assembly can include a liner with a female radial groove. Methods of assembling and positioning a butterfly valve are also provided.