Multiple Displacement Pump With Detachable Drive Conversion
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Solution Overview
Problem
Existing multiple displacement pumps are inflexible and cannot be adapted to different application environments, particularly when an electric drive is not available or compressed air is unavailable, limiting their use in certain conditions.
Innovation Solution
A multiple displacement pump design with a non-positive and detachable connection between the connecting rod and drive, allowing for easy conversion between pneumatic and electric drive units, with a pump unit constructed for central flow principle and adaptable drive types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pump is designed with a fixed drive unit (electric or pneumatic), then the pump structure is simplified and easier to manufacture, but the pump cannot be adapted to different application environments
Solution Approach 1:
The pump system is divided into separable components: the pump unit and the drive unit. The drive unit can be detached and replaced independently, allowing the pump to be adapted to different drive types (electric motor, pneumatic motor, hydraulic motor) without redesigning the entire pump structure. This segmentation enables both manufacturing simplicity and adaptability.
Solution Approach 2:
The pump unit is designed with universal interfaces and mounting structures that can accommodate multiple types of drive units. The connecting rod and drive unit interface is standardized, allowing a single pump design to work with different drive types, thus achieving multi-functionality and adaptability across various application environments.
2Strength
If the connecting element is permanently fixed to the drive unit, then the structural integrity is improved, but the drive unit cannot be replaced or adapted
Solution Approach 1:
The connection between the connecting element and drive unit is designed to be dynamic rather than static. The connecting element features a detachable connection interface that provides structural integrity during operation but allows for easy disconnection and replacement of the drive unit. This dynamic connection enables both strength and adaptability.
3Device complexity
If the pump is designed for a specific drive type (electric or pneumatic), then the design complexity is reduced, but the pump cannot be used in environments where that drive type is unavailable
Solution Approach 1:
The pump unit incorporates universal mounting structures, standardized connection interfaces, and flexible propellant chamber configurations that can accommodate different drive types. This universal design maintains relatively low complexity while enabling the pump to be adapted to various environmental conditions and available drive sources.
Solution Approach 2:
The pump design allows for parameter changes in the drive unit selection (electric, pneumatic, hydraulic) without requiring fundamental design changes to the pump unit. The connecting rod length, mounting positions, and interface parameters can be adjusted to match different drive types, enabling environmental adaptability with minimal complexity increase.
Data Source
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AI summary
Known multiple-displacement pumps are designed to be operated either with a pneumatic or an electric drive. The present invention proposes an arrangement that allows such a pump to be manufactured from largely identical parts or to be converted from one drive type to the other with minimal effort. For this purpose, the displacement elements can be connected via a connecting means that can be extended through a cover of the fluid chambers, allowing a mechanical actuator to be optionally attached, which can be connected to an electric drive or to a control valve.