Diaphragm Pump Drive With Modular Displacement Volume Switching
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Solution Overview
Problem
Existing displacement pumps, particularly those with mechanical drives, are costly components and require complex modifications for changing displacement volumes, leading to inefficiencies in maintenance and resource utilization.
Innovation Solution
A modular electric drive system with interchangeable fluid modules and adaptors that allow for different diaphragm sizes to be mounted to a single drive housing, enabling easy modification of displacement volumes without replacing the drive or motor components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical drive system is used in a displacement pump, then the pump can achieve reliable positive displacement pumping, but the cost of the drive system becomes high and modification of displacement volume becomes complex
Solution Approach 1:
The pump system is divided into separate modular components: a reusable drive housing containing the motor and drive mechanism, and interchangeable fluid modules containing the diaphragm and fluid handling components. This segmentation allows the expensive drive system to be retained while only the fluid modules are changed to modify displacement volume, reducing modification complexity while maintaining reliability.
Solution Approach 2:
The drive housing is designed as a universal platform that can accommodate multiple different fluid modules with varying diaphragm sizes and configurations. This multi-functionality allows a single drive system to perform multiple pumping functions with different displacement volumes by simply changing the fluid module, eliminating the need for complex modifications to the drive system itself.
2Reliability
If the drive housing is sealed to protect internal components, then component protection is improved, but accessibility for maintenance and servicing deteriorates
Solution Approach 1:
The fluid module is extracted as a separate removable unit from the sealed drive housing. This allows the drive housing to remain sealed and protected while the fluid module can be easily removed and replaced for maintenance or configuration changes, without requiring disassembly of the protected drive components.
Solution Approach 2:
The adaptor serves as an intermediary component that connects the fluid module to the drive housing. It provides a sealed interface that allows the fluid module to be coupled to and decoupled from the drive housing, maintaining the sealed environment of the drive while enabling easy access to fluid module components for maintenance.
Data Source
AI summary
A displacement pump includes an electrically powered drive having a drive housing. The drive is at least partially disposed in the drive housing and is configured to provide reciprocating linear motion to a diaphragm. The diaphragm is captured between an adaptor mountable to the drive housing and a fluid cover. The adaptor includes an inner mounting portion interfacing with the drive housing and an outer mounting portion interfacing with the diaphragm. Multiple adaptors having multiple outer mounting portion diameters can be mounted to the same drive housing. Each of the multiple adaptors have the same inner mounting portion configuration to mount to the same drive housing. The adaptors can mount to the drive housing in multiple orientations while the fluid cover can mount to the adaptor in a single orientation.