Pump Recirculation Line Exchangeable Insert for Delivery Rate Adjustment
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Solution Overview
Problem
Existing pumps face challenges in achieving precise and cost-effective adjustment of delivery rates at predefined speeds, due to manufacturing tolerances and complex influencing parameters, leading to inefficiencies and high retooling costs.
Innovation Solution
A pump design incorporating a recirculation line with an exchangeable insert having a fixed flow area, allowing for quick and precise adjustment of delivery rates by inserting the appropriate insert without disassembling the pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pumps are manufactured with standard tolerances, then manufacturing costs are reduced, but delivery rate precision deteriorates
Solution Approach 1:
The pump system is segmented into a base pump unit and exchangeable inserts. The inserts are separate components that can be detached and replaced, allowing precision adjustment of delivery rate without requiring high-precision manufacturing of the entire pump. The inserts with different flow areas are manufactured separately and fitted into the pump housing.
Solution Approach 2:
The delivery rate parameter is adjusted by changing the flow area parameter of the inserts. Different inserts with predetermined flow areas (e.g., 0.5 mm², 1.0 mm², 1.5 mm²) are available to achieve different delivery rates. This allows continuous adjustment of the delivery rate parameter without retooling the entire pump.
2Manufacturing precision
If delivery rate adjustment is achieved through retooling, then precision is improved, but time and cost increase
Solution Approach 1:
The system transitions from a static pump configuration to a dynamic one where inserts can be easily exchanged. The exchangeable inserts allow the delivery rate to be adjusted dynamically by simply replacing the insert component, eliminating the need for time-consuming retooling operations while maintaining precision.
Solution Approach 2:
The flow control function is extracted from the main pump body and embodied in separate exchangeable inserts. This allows the inserts to be removed and replaced independently, enabling quick adjustment of delivery rate without affecting the rest of the pump system or requiring disassembly of the pump housing.
3Adaptability or versatility
If fixed pump design is used, then manufacturing simplicity is maintained, but adaptability deteriorates
Solution Approach 1:
The pump housing is designed with a universal insert receptacle that can accommodate multiple types of inserts with different flow areas. This universal interface allows a single pump unit to perform multiple delivery rate functions by simply changing the insert, enhancing adaptability without proportionally increasing structural complexity.
Data Source
AI summary
A pump for conveying a medium having a suction-side inlet, a pressure-side outlet, a suction chamber, and a conveyance housing. The conveyance housing having a pressure chamber and a transport element. The transport element rotatably supported in the conveyance housing for conveying the medium from the suction chamber into the pressure chamber. The pump having a recirculation line via which the medium is supplied from the pressure chamber to the suction chamber, wherein an exchangeable insert having an unchanging flow area is arranged in the recirculation line.