Yoke Assembly for Synchronizing Dual Displacement Pumps
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Solution Overview
Problem
Existing fluid proportioners face design and operational complexities when dealing with two-component epoxies and polyurethanes that do not have a 1:1 ratio, requiring pumps of different displacement sizes, which complicates the mixing and dispensing process.
Innovation Solution
A two-component pumping system with a motor-driven yoke assembly that connects and synchronizes two pumps with adjustable displacement rods, allowing for balanced operation and adjustment to accommodate different ratios, ensuring proper moment balance and reducing wear on components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pumps of different displacement sizes are used to achieve non-1:1 mixing ratios, then the proportioning accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent employs asymmetric pump configurations where pumps of different displacement sizes are used to achieve non-1:1 mixing ratios. The yoke assembly is designed with asymmetric geometry to accommodate these different sized pumps while maintaining synchronized operation, thus achieving proportioning accuracy for materials requiring non-equal ratios without requiring complex control systems.
Solution Approach 2:
The yoke assembly incorporates adjustable elements that allow dynamic reconfiguration of the pump system. The adjustable connections enable the system to adapt to different pump displacement combinations, maintaining balanced operation across various proportioning requirements without requiring multiple fixed configurations or complex control mechanisms.
2Manufacturing precision
If pumps of different displacement sizes are used to achieve non-1:1 mixing ratios, then the proportioning accuracy is improved, but the operational balance deteriorates
Solution Approach 1:
The yoke assembly functions as a counterbalancing mechanism that compensates for the asymmetric forces generated by pumps of different displacement sizes. By strategically positioning and dimensioning the yoke components, the system counterweights the unequal forces from differently sized pumps, maintaining operational balance and stability even when achieving non-1:1 proportioning ratios.
Solution Approach 2:
The yoke assembly employs asymmetric geometry specifically designed to match the asymmetric pump configuration. The unequal arms and connection points of the yoke are proportioned to balance the moments created by pumps of different displacements, allowing the system to maintain operational stability while achieving accurate non-equal proportioning.
3Strength
If a rigid connection system is used to connect motor to pumps, then the structural strength is improved, but the adaptability deteriorates
Solution Approach 1:
The yoke assembly incorporates adjustable connections that allow the rigid structural framework to be reconfigured for different operating conditions. The adjustable elements enable the same rigid structure to adapt to various pump displacement combinations and proportioning ratios, maintaining structural strength while providing versatility for different material mixing requirements.
Solution Approach 2:
The yoke assembly is designed as a universal connecting mechanism that can accommodate multiple pump configurations and displacement ratios within a single rigid structural framework. The adjustable features allow the same structure to serve multiple functions and adapt to different proportioning requirements without compromising structural integrity.
Data Source
AI summary
A two-component pumping system includes a first pump for pumping a first component, a second pump for pumping a second component, a motor, and a yoke assembly for connecting the motor to the first pump and the second pump and driving them simultaneously. The first pump includes a first displacement rod that reciprocates in a first pump axis. The second pump includes a second displacement rod that reciprocates in a second pump axis parallel to the first pump axis. The motor includes a drive shaft configured to reciprocate in a drive axis that is parallel to and in a common plane with the first and second pump axes. The motor is also configured to drive the first and second displacement rods in unison. The yoke assembly includes a top connector and a shoe. The top connector connects to the drive shaft.