Peristaltic Pump Roller Repositioning to Prevent Tube Fusing
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Solution Overview
Problem
Conventional peristaltic pumps experience excessive creep and tube fusing due to constant compression of the formula delivery tube, particularly in silicone tubing, leading to premature wear and deformation.
Innovation Solution
Implementing a method where a motor roller shifts to different positions along the tube via micro pulses transmitted by a controller, with predetermined rest and rotation times, to minimize tube compression and prevent fusing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the motor roller continuously compresses the tube to maintain sealing and prevent leakage, then the reliability of the pump is improved, but the tube experiences excessive creep and fusing leading to premature wear
Solution Approach 1:
The motor roller is moved to different positions along the tube at periodic intervals (e.g., every 12 hours, 24 hours, or at predetermined rotation times) to redistribute compression stress. This periodic repositioning prevents continuous compression at a single location, thereby reducing creep and fusing while maintaining sealing reliability through intermittent compression cycles.
Solution Approach 2:
The system transitions from a static motor roller position to a dynamic repositioning mechanism. The controller automatically adjusts the motor roller position along the tube based on predetermined time intervals or rotation counts, making the compression point movable rather than fixed. This dynamic adjustment distributes mechanical stress across multiple tube sections, extending tube life while preserving sealing function.
2Duration of action of stationary object
If the motor roller is repositioned frequently to prevent tube fusing, then the tube service life is extended, but the device complexity increases due to additional control mechanisms
Solution Approach 1:
The controller automatically manages the motor roller repositioning based on predetermined time intervals or rotation counts without requiring user intervention. The system monitors its own operation state and autonomously adjusts the motor roller position, eliminating the need for complex manual control interfaces or additional sensors while extending tube service life through systematic repositioning.
Solution Approach 2:
The repositioning function is integrated into the existing pump operation cycle, utilizing the motor's rotation mechanism that already performs useful work. By leveraging the continuous rotation already necessary for pumping, the system achieves tube protection as a byproduct of normal operation, avoiding the need for separate dedicated repositioning mechanisms and reducing overall device complexity.
Data Source
AI summary
A method of prolonging the life of a peristaltic pump, including setting a timer for a predetermined rest time after the peristaltic pump is used, transmitting a micro pulse to a motor of the peristaltic pump after the predetermined rest time has elapsed, and shifting a motor roller from an initial position to a second position so that a pinch point of a tube of the peristaltic pump is formed in the second position. Further, a non-transitory computer readable storage medium storing instructions that cause the one or more computers to set a timer for a predetermined rest time after the peristaltic pump is used, transmit a micro pulse to a motor after the predetermined rest time has elapsed. and shift a motor roller from an initial position to a second position so that a pinch point of a tube of the peristaltic pump is formed in the second position.