Vacuum Pump Belt Drive Layout for Fast Centrifugal Pump Priming
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Solution Overview
Problem
Centrifugal pumps face limitations in priming when starting from an air-filled or dry condition, requiring auxiliary vacuum pumps and complex belt replacement processes that involve significant downtime and labor.
Innovation Solution
A belt drive system with a passive idler pulley and adjustable tensioner pulley facilitates power transmission between the primary drive shaft and vacuum pump shaft, allowing belt replacement without disassembling the centrifugal pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If traditional belt replacement process is used, then complete disassembly of centrifugal pump is required, but this causes significant downtime and labor costs
Solution Approach 1:
The belt drive system is segmented into modular components: the idler pulley assembly can be independently removed from the pump assembly, allowing the belt to be accessed and replaced without disassembling the entire pump. This segmentation enables maintenance personnel to service the belt while the pump remains assembled and operational.
Solution Approach 2:
The idler pulley and tensioning mechanism are extracted as a separate removable assembly from the main pump structure. This allows the belt to be taken out and replaced through an opening in the pump assembly without requiring complete disassembly, thereby reducing downtime and labor requirements.
2Reliability
If auxiliary vacuum pump is added for priming, then priming capability is improved, but device complexity increases
Solution Approach 1:
The auxiliary vacuum pump is integrated with the centrifugal pump assembly, sharing common structural elements and mounting provisions. This merging reduces the overall complexity compared to a completely separate auxiliary system, while still providing the necessary priming capability.
Solution Approach 2:
The belt drive system is designed to accommodate both the main centrifugal pump and the auxiliary vacuum pump, with a single belt configuration that can drive both units. This multi-functionality reduces the need for separate drive systems and simplifies the overall device complexity.
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
Enables efficient belt replacement with minimal disruption, reducing downtime and labor costs by maintaining power transfer during the process.
Implementation Method 1
the idler pulley causes the endless drive belt to engage the drive sprocket
Implementation Method 2
facilitates power transmission between the primary drive shaft and vacuum pump shaft
Data Source
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AI summary
Systems and methods described herein provide a belt drive with necessary power transfer for a vacuum priming system while enabling simplified belt replacement. In one implementation, an auxiliary drive system for driving a vacuum pump in a pump priming system is provided. The auxiliary drive system includes a drive sprocket attached to a drive shaft of a main pump, an auxiliary sprocket attached to a shaft of the vacuum pump, an idler pulley mounted to an engine bracket of the main pump, and an endless drive belt having an inner side and an outer side. The idler pulley causes the endless drive belt to engage the drive sprocket and rotate the auxiliary sprocket without the endless drive belt encircling the drive sprocket.