Fluid Delivery Device Forepump Main Pump Drive Shaft Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fluid delivery devices lack ideal coordination between the forepump and main pump, leading to reduced service life and efficiency.
Innovation Solution
The forepump and main pump are drivingly coupled to a common drive shaft, with the forepump input shaft directly coupled to the drive shaft and the main pump input shaft indirectly coupled via a connecting shaft, allowing for a specific transmission ratio between their rotational speeds, enhancing coordination and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the forepump and main pump are both directly coupled to the common drive shaft, then both pumps can be driven at optimal speeds, but the device complexity increases and coordination between pumps becomes difficult to achieve
Solution Approach 1:
The patent introduces a connecting shaft as an intermediary element between the forepump delivery gear and the main pump input shaft. This connecting shaft mediates the power transmission, allowing the forepump and main pump to be coordinated through a specific transmission ratio while avoiding the complexity of directly coupling both pumps to the common drive shaft with independent control mechanisms.
2Productivity
If the forepump and main pump are coordinated with a specific transmission ratio, then efficiency is improved, but the device complexity increases due to additional connecting components
Solution Approach 1:
The patent merges the drive shaft, forepump input shaft, and connecting shaft into a integrated transmission system. The forepump input shaft is formed as one piece with the drive shaft, and the connecting shaft integrates the forepump delivery gear and main pump input shaft connection. This merging reduces the number of separate components while maintaining the specific transmission ratio for optimal efficiency.
3Reliability
If the main pump is indirectly driven via the forepump through the connecting shaft, then ideal coordination is achieved, but the ease of operation is reduced due to indirect coupling
Solution Approach 1:
The patent segments the drive transmission into distinct functional sections: the drive shaft directly drives the forepump input shaft for optimal forepump speed, while the connecting shaft separately manages the power transmission to the main pump input shaft through the forepump delivery gear. This segmentation allows each pump to operate at its optimal speed independently while maintaining ideal coordination through the defined transmission ratio.
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 configuration ensures optimal speed adjustment for both pumps, achieving a long service life and improved efficiency by maintaining a fixed relationship between their rotational speeds, thus enhancing the overall performance of the fluid delivery device.
Implementation Method 1
a forepump drive gear (16) coupled to the forepump input shaft (13) and a forepump delivery gear (17) interacting with the forepump drive gear to deliver the fluid
Implementation Method 2
the forepump delivery gear (17) and the main pump input shaft (14) are connected to one another via a connecting shaft (21)
Data Source
AI summary
A fluid delivery device having a forepump and a main pump fluidically connected to the forepump, wherein the forepump can be driven via a forepump input shaft and the main pump can be driven via a main pump input shaft. According to the invention, the forepump has a forepump drive gear coupled to the forepump input shaft and a forepump delivery gear interacting with the forepump drive gear to deliver the fluid, wherein the forepump and the main pump are drivingly coupled to a common drive shaft, and wherein the forepump delivery gear and the main pump input shaft are connected to one another via a connecting shaft such that the forepump input shaft is coupled directly to the drive shaft and the main pump input shaft is coupled to the drive shaft via the connecting shaft.