Compact Dual-Section Gear Pump With Shared Intake
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Solution Overview
Problem
Existing external-type gear pumps lack compactness and efficiency while being cost-effective, especially in applications requiring independent pressurization for multiple functions.
Innovation Solution
A dual-section gear pump design with two pump sections separated by a divider, sharing a common intake flow and featuring independent gear sets for each section, allowing for separate pressurization and discharge through separate outlets, enhancing compactness and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-section gear pump is used, then the structure is simple, but the compactness and efficiency for multi-function applications are insufficient
Solution Approach 1:
The pump is divided into two independent pump sections separated by a divider plate. Each section has its own gear set, outlet, and pressurization chamber, allowing independent operation for different functions while sharing common components like the inlet passage and drive shaft, thus achieving multi-functionality without proportionally increasing complexity
Solution Approach 2:
The common inlet passage and shared drive shaft serve both pump sections simultaneously. The single drive shaft rotates both gear sets, and the common inlet supplies fluid to both sections, enabling one pump to perform multiple pressurization functions that would otherwise require separate pumps
2Productivity
If two separate gear pumps are used for independent pressurization, then the efficiency for varying loads is improved, but the device complexity and space occupation increase
Solution Approach 1:
Two pump sections that would traditionally be separate units are merged into a single integrated housing. They share common components including the inlet passage, drive shaft, and overall housing structure, reducing the total volume occupied while maintaining independent pressurization capability for varying load requirements
3Productivity
If two separate gear pumps are used for independent pressurization, then the efficiency for varying loads is improved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The pump housing is designed as a single integrated component containing both pump sections, allowing manufacturing as one piece or pre-assembled unit. Shared components like the common inlet passage and drive shaft reduce the total number of parts to manufacture, lowering production costs while maintaining independent pressurization functionality
Solution Approach 2:
The common inlet passage and drive shaft serve dual purposes for both pump sections, reducing the total component count. This universality decreases manufacturing complexity and cost while enabling independent pressurization efficiency needed for varying load applications
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
The dual-section gear pump achieves compactness and efficiency by enabling independent pressurization and discharge of fluid in each section, effectively managing varying loads and reducing manufacturing costs, making it suitable for applications like agricultural vehicles.
Implementation Method 1
the first drive gear and the first idler gear are configured to be in meshing engagement with each other such that fluid is transferred around the outside of the first gear set from the first intake side to the first discharge side
Implementation Method 2
the second drive gear and the second idler gear are configured to be in meshing engagement with each other such that fluid is transferred around the outside of the second gear set from the second intake side to the second discharge side
Implementation Method 3
the divider includes a fluid flow passage that fluidly connects the first pump cavity with the second pump cavity for supplying fluid to the second intake side of the second pump cavity
Data Source
AI summary
A dual-section gear pump that enhances compactness of the design includes two pump sections separated by a divider. Each pump section includes a pump cavity and a gear set configured to convey fluid from an intake side to a discharge side of the respective pump cavities. The divider includes a fluid flow passage that enables the two pump sections to share common intake flow via the flow passage provided across the divider. The divider also is configured to enable each gear set in each pump section to provide independent pressurization of the fluid in each pump section, which is discharged from each pump cavity via separate outlets. The gear pump is configured to provide suitable sealing between each pump section and support of the respective gear sets in each pump section while enhancing compactness of the design.