Sloped Top Ring Eccentric Roundel for Diaphragm Pump
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Solution Overview
Problem
Conventional five-compressing-chamber diaphragm pumps experience a 'squeezing phenomenon' due to reiterative acting forces on the diaphragm membrane, leading to premature wear and reduced service lifespan.
Innovation Solution
The introduction of a cylindrical eccentric roundel with a sloped top ring in the eccentric roundel mount reduces the oblique pull and rebounding forces on the diaphragm membrane, enhancing durability and extending service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional tubular eccentric roundel with a horizontal top face is used, then the pump can operate with simple structure, but the oblique pull and squeezing phenomena occur on the diaphragm membrane, reducing its service lifespan
Solution Approach 1:
The patent changes the geometric parameters of the eccentric roundel top face from horizontal to sloped. This parameter change eliminates the oblique pull and squeezing forces on the diaphragm membrane by creating a surface that allows the piston to apply force more perpendicular to the membrane, thereby extending the diaphragm's service lifespan without significantly complicating the overall pump structure
Solution Approach 2:
The patent introduces a new dimensional aspect by adding a sloped top face to the eccentric roundel, transforming it from a simple cylindrical shape to one with an inclined surface. This dimensional change allows the force vector from the piston to be distributed more favorably across the diaphragm membrane, reducing harmful oblique forces while maintaining structural simplicity
2Productivity
If reiterative acting forces are applied to the diaphragm membrane through conventional roundels, then the pump achieves continuous pumping action, but the squeezing phenomenon causes premature wear and reduced durability
Solution Approach 1:
By changing the top face angle of the eccentric roundel from horizontal to sloped, the patent modifies the force application parameters. This change reduces the squeezing component of the reiterative acting forces while maintaining the continuous pumping action, thereby improving diaphragm membrane durability without sacrificing productivity
Solution Approach 2:
The patent applies local quality modification by creating a sloped top face specifically on the eccentric roundel where it contacts the diaphragm membrane. This localized geometric modification addresses the squeezing phenomenon at the critical contact point while leaving the rest of the pump structure unchanged, maintaining continuous pumping action while improving durability
3Reliability
If a sloped top ring is added to the eccentric roundel, then the service lifespan of the diaphragm membrane is extended, but the manufacturing complexity increases
Solution Approach 1:
The patent changes the manufacturing parameter of the eccentric roundel from a horizontal top face to a sloped top face. This single parameter change can be achieved through standard machining or molding processes, extending diaphragm membrane service lifespan while adding minimal manufacturing complexity
Solution Approach 2:
The sloped top face of the eccentric roundel can be manufactured using standard curving or angling techniques in machining or molding. This geometric modification, while adding some complexity, uses conventional manufacturing methods to create the inclined surface that eliminates squeezing forces and extends diaphragm lifespan
Data Source
AI summary
A roundel structure for a five-compressing-chamber diaphragm pump includes a cylindrical or inverted frustoconical eccentric roundel in an eccentric roundel mount. The cylindrical or inverted frustoconical eccentric roundel includes an annular positioning groove or indentation, a vertical or inverted frustoconical flank and a sloped top ring extending from the annular positioning groove or indentation to the flank. The sloped top ring eliminates the oblique high frequency pull and squeezing phenomena that occurs in a conventional tubular eccentric roundel arrangement.