Adjustable Peristaltic Pump Mechanism for Tube Contact Pressure
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Solution Overview
Problem
Existing peristaltic pumps in medical applications face challenges with non-adjustable mechanisms that fail to accommodate changes in fluid viscosity, tube material, or fluid volume, leading to potential reliability issues and precision concerns.
Innovation Solution
A peristaltic pump with an adjustable opening and closing mechanism, featuring a pivotable cover connected to a tube pressuring portion via elastic elements, allowing for adjustable tension and precise control of tube contact pressure, using a slider and guiding elements to ensure smooth and accurate tube engagement and disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the tube pressuring mechanism is made fixed with factory-set tension, then the pump structure is simple, but it cannot adapt to changes in fluid viscosity, tube material, or fluid volume
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed tube pressuring mechanism into an adjustable one. The tube pressuring portion is made movable relative to the rotor, allowing dynamic adjustment of the contact pressure between the tube and rotor. This is achieved through a positioning mechanism that can change the position of the tube pressuring portion, enabling adaptation to different fluid viscosities, tube materials, and fluid volumes while maintaining a relatively simple overall structure.
2Reliability
If the pump is designed for long-term medical use with high reliability, then the construction must be exact with minimal tolerances, but this increases manufacturing complexity and cost
Solution Approach 1:
The patent applies parameter changes by making the tube pressuring mechanism adjustable rather than fixed. This allows the contact pressure and positioning parameters to be optimized for different operating conditions and tube types. The positioning mechanism enables precise control of the tube position and pressuring force, ensuring reliable operation across various medical applications without requiring extremely tight manufacturing tolerances on all components.
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
The pump provides flexibility, durability, and precision in handling various fluid viscosities and tube materials, ensuring reliable operation and optimal performance across different applications.
Implementation Method 1
an elastic element connected to the slider and the tube pressuring portion so that a tube engaging surface of the tube pressuring portion slides towards and away from the rotor
Data Source
AI summary
A peristaltic pump includes a motor, a rotor coupled to the motor, a housing in which the rotor is arranged, and an opening and closing mechanism. The mechanism includes a tube pressuring portion, a slider, and a pivotable cover coupled to the housing and the slider and the mechanism is connected to the slider and the tube pressuring portion such that a tube engaging surface of the tube pressuring portion slides towards and away from the rotor upon closing and opening of the pivotable cover. The opening and closing mechanism further includes a slider moving element attached to the slider, the pivotable cover including a rotating shaft having an extension configured to engage the slider moving element for moving the slider and also the tube pressuring portion away and towards a top of the housing in response to a respective opening and closing of the pivotable cover.