Electromagnetic Pump Center Plate Self-Centering Rib
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Solution Overview
Problem
In small size electromagnetically driven fluid pumps, the thin center plate can easily deviate from the diaphragm during assembly, leading to reduced workability and potential breakage due to biased loads, which affects the pump's performance and durability.
Innovation Solution
A center plate with a ring rib and integral washer portion is used, allowing for self-centering during screwing by applying forces that correct deviations without the need for external jigs, ensuring proper alignment and preventing premature diaphragm deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a thin center plate is used in small size pumps, then the pump size is reduced, but the center plate easily deviates from the diaphragm during assembly
Solution Approach 1:
The rib is formed on the center plate in advance before assembly. This preliminary structural feature guides the center plate onto the protruding portion of the diaphragm, ensuring proper alignment is established before the screwing operation begins, thus preventing deviation during assembly
Solution Approach 2:
The rib acts as an intermediary guiding structure between the center plate and the diaphragm's protruding portion. This intermediate feature facilitates smooth engagement and centering, allowing the thin center plate to align precisely without requiring complex external fixtures
2Ease of operation
If the center plate deviates from the diaphragm during assembly, then workability is reduced, but applying biased loads to correct deviation may cause breakage
Solution Approach 1:
The rib structure enables the center plate to self-center during the screwing operation. As the screw is tightened, the rib naturally guides the center plate onto the protruding portion, correcting any deviation automatically without requiring external force or adjustment, thus maintaining workability while preventing breakage
Solution Approach 2:
The rib changes the geometric parameters of the center plate's engagement with the diaphragm. By adding this protruding feature, the assembly process transforms from a potential misalignment scenario to a guided self-centering process, improving ease of operation without compromising structural integrity
3Ease of manufacture
If the center plate is fixed in a deviated state, then assembly is simplified, but diaphragm action becomes improper and durability decreases
Solution Approach 1:
The rib is formed in advance on the center plate to create a self-centering mechanism. This preliminary structural feature ensures that proper alignment is automatically achieved during assembly, maintaining both assembly simplicity and pump durability by preventing deviated fixation
Solution Approach 2:
The rib structure enables automatic self-centering during the screwing process. The center plate self-corrects its position relative to the diaphragm without requiring complex assembly procedures, thus maintaining assembly simplicity while ensuring proper alignment for long-term durability
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 solution enhances workability by allowing spontaneous centering of the center plate, maintaining proper diaphragm action, and preventing early deterioration and breakage, thus improving pump performance and durability.
Implementation Method 1
a screw member (9) to be screwed in the shaft (21) in an axial direction of the shaft (21) via the center plate (6)
Implementation Method 2
electromagnets are arranged so as to face the magnets of the oscillator, and the electromagnets are enclosed with a casing. A passage of a fluid is formed outside the diaphragm with the casing, and the oscillator is vibrated synchronously with a change in polarity of the electromagnets
Data Source
AI summary
There is provided an electromagnetically driven fluid pump. Even if deviation of a center plate from the diaphragm arises, centering of the center plate is carried out during the work for setting the center plate to an oscillator. The diaphragm and the center plate are fixed to the oscillator by means of a screw member, the diaphragm has a rising portion fitting to a through-hole at the center of the center plate, and the center plate has a ring-shaped rib on its surface where the screw member is inserted. The screw member is formed integrally with a washer portion and a diameter of the washer portion is nearly the same as an inner diameter of a bottom surface of the rib and the washer portion is formed so as to press a part of the rib in the case of maximum deviation of the center plate from the diaphragm.