Check Valve With Segmented Seat And Tapered Seal
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Solution Overview
Problem
Existing check valve designs fail to maintain a reliable, one-way fluid flow in double diaphragm pumps due to distortion issues during assembly, which compromise the seal integrity and efficiency.
Innovation Solution
A check valve assembly with an integrally formed seat and seal body, featuring a valve body with a circumferential notch and tapered surface, secured between flanges with an o-ring for fluid-tight sealing, preventing backflow while allowing forward flow by using a stopper that seats and unseats from a conical seat surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve body is secured between flanges during assembly, then the valve is properly installed and sealed, but the circular opening becomes distorted compromising seal integrity
Solution Approach 1:
The valve body is divided into two portions by a circumferential notch, creating a segmented structure where one portion contains the circular opening and the other portion is secured between flanges. This segmentation isolates the circular opening from assembly-induced distortion while maintaining proper installation sealing.
2Strength
If the valve body is secured tightly between flanges, then proper sealing is achieved, but distortion occurs in the circular opening
Solution Approach 1:
By dividing the valve body into two portions with a circumferential notch, the structure allows one portion to be compressed for sealing while the other portion maintains the circular opening's shape, preventing distortion despite tight securing between flanges.
3Ease of manufacture
If a separate seat component is used, then assembly flexibility is improved, but the number of parts and complexity increases
Solution Approach 1:
The valve body integrates both the seat structure and the body as a single integral component formed from a single piece of material. This merging eliminates separate seat components, reducing part count and assembly complexity while maintaining manufacturing flexibility through the integrated design.
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
Ensures reliable one-way fluid flow and maintains seal integrity by absorbing distortion and energizing the o-ring for a snug seal, enhancing the operational efficiency and durability of the double diaphragm pump.
Implementation Method 1
The first portion of the valve body may include a tapered surface that is of smaller diameter at the first end of the valve body and increases in diameter to the notch. As the valve body is secured between the first and second flanges, the tapered surface is forced into the o-ring. This energizes the o-ring to fluid-tightly seal between the valve body and the first and second flanges.
Data Source
AI summary
A valve assembly includes first and second conduits having respective first and second flanges in abutment with each other, a stopper in the second conduit, and a valve body secured between the first and second flanges. The valve body includes a body bore in communication between the first and second conduits. The body bore defines a circular opening in one end of the valve body. The valve body also includes a circumferential notch that substantially insulates the circular opening from distortion arising from securing the valve body. The stopper snuggly seats against the circular opening to prevent fluid flow from the second conduit to the first conduit, but unseats to permit fluid flow from the first conduit to the second conduit. An o-ring may surround a portion of the valve body and be energized as the valve body is secured. A lip may surround the circular opening to provide a seat for the stopper.