Diaphragm Pump Convex Guide Zone for Low Vibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing diaphragm pumps experience noise and vibration issues during operation due to uncontrolled membrane movement and pressure forces, which affect performance and service life.
Innovation Solution
The diaphragm pump design features a convex guide zone that rolls along a complementary support zone during the lifting movement, combined with a concave compensation zone and a central anchor connected to a lifting drive, ensuring controlled, low-vibration movement and increased stiffness, allowing for larger strokes and higher performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the diaphragm is made sufficiently elastic to withstand flexing forces, then it can endure pump operation, but it becomes deformed by opposing pressure forces reducing performance
Solution Approach 1:
The diaphragm is divided into distinct functional zones: a rigid central zone for structural stability and pressure resistance, a flexible guide zone for controlled movement, and a compensation zone for stress relief. This segmentation allows different parts to have different mechanical properties, maintaining both elasticity and dimensional stability.
Solution Approach 2:
Different zones of the diaphragm are given different local properties: the central zone has high rigidity for withstanding pressure forces, while the guide zone has high elasticity for flexing movement. This local differentiation resolves the contradiction by ensuring each zone optimizes for its specific function.
2Stability of the object's composition
If the diaphragm is made sufficiently dimensionally stable to resist pressure deformation, then pumping performance is maintained, but it cannot withstand the flexing forces during oscillating movement
Solution Approach 1:
The diaphragm structure is segmented into rigid and flexible zones, allowing the central zone to maintain dimensional stability under pressure while the guide zone provides the necessary flexing capability for oscillating movement.
Solution Approach 2:
The central zone is designed with high dimensional stability to resist pressure deformation, while the guide zone is designed with high flexibility to withstand and accommodate flexing forces during operation.
3Ease of operation
If the guide zone protrudes into the working chamber to guide movement, then the diaphragm follows a defined path, but it increases the risk of contact with the pump head causing noise and vibration
Solution Approach 1:
A support zone is introduced as an intermediary element between the guide zone and the pump head. This support zone acts as a mediator that guides the diaphragm's movement while preventing direct contact between the guide zone and the pump head, thereby eliminating noise and vibration.
Solution Approach 2:
The support zone is designed with a complementary shape that mirrors the guide zone's curvature, creating a precise guiding interface that ensures smooth movement without impact or friction against the pump head.
4Ease of operation
If the diaphragm is designed with structured ribs and webs to define flexing movement, then controlled movement is achieved, but the device complexity increases
Solution Approach 1:
Instead of adding complex rib and web structures throughout the diaphragm, the invention segments the diaphragm into functional zones with distinct geometries. The guide zone's convex curvature alone provides the necessary flexing control, avoiding the need for additional structural elements.
Solution Approach 2:
The invention controls flexing movement by changing the geometric parameters of the guide zone (convex curvature radius, thickness distribution) rather than adding complex structural features. This approach achieves controlled movement while maintaining simplicity.
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
This design significantly reduces noise and vibration, enhances pumping speed, and maintains membrane shape under pressure, achieving better flow rates and extended service life.
Implementation Method 1
the working or pumping diaphragm rolls with the entire circumference of its guide zone during the lifting movement on a complementarily shaped ring or support zone of the pump head
Implementation Method 2
the compensation zone undergoes a stretching during the upward stroke, so that the compensation zone is taut in the top dead center
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A diaphragm pump (1) which has in at least one pump head (2) a working or pump diaphragm (3) which, by means of a clamping zone (4) arranged at its outer circumference, is clamped between two housing parts (5, 6) of a pump housing and which, between itself and a pump head part (6), borders a working or delivery chamber (8) and which, in a central zone (10), surrounds a diaphragm armature (11) which, on a side facing away from the working or delivery chamber (8) of the at least one pump head (2), is connected to a reciprocating drive (12) which is provided for generating an oscillating stroke movement of the working or pump diaphragm (3). The diaphragm pump according to the invention is characterized in that the annular zone arranged adjacent to the clamping zone (4) is formed as a guide zone (14) which, in the unloaded state of the working or pump diaphragm, is convexly curved and projects into the working or delivery chamber (8), with which guide zone (14) the working or pump diaphragm (3) rolls on a complementarily shaped annular or support zone (15) of the pump head (2) during the stroke movement of the working or pump diaphragm (3), and that a compensation zone (16) of the working or pump diaphragm (3) is provided between the guide zone (14) and the central zone (10), which compensation zone, in the unloaded state, is in contrast curved concavely and in the direction of the stroke drive (12). The diaphragm pump according to the invention is characterized by improved pump performance, a long service life and quiet and low-vibration pump operation.