Diaphragm Pump Valve Hole Layout to Prevent Valve Body Tearing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In existing diaphragm pump valve structures, the valve body vibrates excessively when airflow reverses, leading to frequent contact with metal plates and potential tearing, especially at high frequencies above 20 kHz.
Innovation Solution
A valve design featuring a valve body with a third through hole and a second through hole, where the second opening area is 50% or more of the third opening area, positioned such that the second through hole is inside the third through hole, reducing the likelihood of the valve body curling up and contacting the edges, thus preventing tearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the valve body is made movable to enable bidirectional flow control, then fluid flow control capability is improved, but the valve body vibrates excessively and abuts against metal plates causing wear and tearing
Solution Approach 1:
The second through hole is positioned inside the third through hole, creating a nested configuration where the smaller opening is contained within the larger opening. This nested structure prevents the valve body from curling into the second through hole during vibration, eliminating the harmful contact between the valve body and metal plates while preserving bidirectional flow control capability.
2Reliability
If the second through hole opening area is made smaller to prevent valve body contact, then valve body protection is improved, but fluid flow efficiency may be reduced
Solution Approach 1:
The invention optimizes the area ratio parameter between the second through hole and third through hole, specifying that the area ratio should be 50% or more. This parameter optimization ensures sufficient flow capacity through the restricted second opening while maintaining the protective effect of preventing valve body contact with metal plates.
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 effectively suppresses valve body tearing and maintains fluid flow efficiency by ensuring the valve body does not curl into the second through hole, even at high frequencies, and allows for bidirectional fluid control without bottlenecks.
Implementation Method 1
a diaphragm pump using a piezoelectric body
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A valve includes a first plate (10) having a first through hole (100), a second plate (20) having a second through hole (210) that does not face the first through hole (100), a valve chamber (55) formed by being surrounded by the first plate (10) and the second plate (20), and a valve body (30) disposed in the valve chamber (55) and having a third through hole (300) that does not face the first through hole (100) and that faces the second through hole (200), the valve body (30) being movable up and down between the first plate (10) and the second plate (20). In addition, a second opening area of the second through hole (210) is smaller than a third opening area of the third through hole (300), and the second through hole (210) is located in the third through hole (300) when viewed from a front.