Eccentric Roundel Sloped Top Ring Diaphragm Pump Wear
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Solution Overview
Problem
Conventional four-booster-chamber diaphragm pumps experience a 'squeezing phenomenon' due to the rounded shoulder of the truncated-cylinder eccentric roundel, leading to premature wear and reduced service lifespan of the diaphragm membrane.
Innovation Solution
The introduction of a sloped top ring in the eccentric roundel structure, which reduces the oblique pull and rebounding forces on the diaphragm membrane, enhancing durability and extending the service lifespan by distributing forces more linearly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional rounded shoulder is used on the truncated-cylinder eccentric roundel, then the structure is simple to manufacture, but it causes oblique pull and squeezing phenomena on the diaphragm membrane leading to premature wear
Solution Approach 1:
The patent applies local quality by creating a sloped top ring structure at the specific location where the rounded shoulder contacts the diaphragm membrane. This localized geometric modification changes the force distribution characteristics only at the critical contact area, while maintaining the overall simple cylindrical structure for ease of manufacture. The slope angle is optimized to reduce oblique pull forces without requiring complete redesign of the entire roundel.
Solution Approach 2:
The patent introduces asymmetry by replacing the symmetric rounded shoulder with a sloped top ring that has an inclined surface. This asymmetric geometry creates a more favorable force vector distribution, reducing the horizontal oblique pull component that causes squeezing phenomena. The slope breaks the symmetry of force application while maintaining manufacturing simplicity through standard machining operations.
2Reliability
If a sloped top ring is introduced to eliminate oblique pull and squeezing phenomena, then the service lifespan is prolonged, but the device complexity increases
Solution Approach 1:
The sloped top ring is implemented as a localized geometric feature rather than a complete structural redesign. This approach modifies only the critical contact surface while leaving the rest of the roundel structure unchanged, thereby minimizing the increase in device complexity. The slope can be manufactured using standard machining operations such as turning or milling, which are already part of conventional manufacturing processes.
Solution Approach 2:
The patent changes the geometric parameters of the roundel top surface by introducing a slope angle. This parameter modification optimizes the force distribution to eliminate squeezing phenomena and extend service lifespan. The slope angle is a single controllable parameter that can be adjusted during manufacturing without fundamentally changing the device architecture or requiring additional components.
3Device complexity
If the rounded shoulder design is used, then the pump structure is simple, but power consumption is high due to rebounding forces
Solution Approach 1:
The patent modifies the geometric parameter of the roundel top surface by introducing a slope, which changes the force application characteristics. This parameter change reduces rebounding forces during diaphragm membrane actuation, thereby lowering power consumption. The modification maintains structural simplicity by using a single geometric parameter adjustment rather than adding complex mechanisms or components.
Data Source
AI summary
The present invention provides an eccentric roundel structure for four-booster-chamber diaphragm pump. The eccentric roundel structure is a truncated-cylinder eccentric roundel in an eccentric roundel mount. The truncated-cylinder eccentric roundel characteristically comprises an annular positioning dent, a truncated cylinder peripheral and a sloped top ring created from the annular positioning dent to the truncated cylinder peripheral to replace a conventional rounded shoulder. By means of the sloped top ring, the oblique pull and squeezing phenomena of high frequency incurred by the rounded shoulder in a conventional tubular eccentric roundel are completely eliminated. Thus, not only the durability of the four-booster-chamber diaphragm pump for sustaining the pumping action of high frequency from the truncated-cylinder eccentric roundels is mainly enhanced but also the service lifespan of the four-booster-chamber diaphragm pump is exceedingly prolonged.