Linear Peristaltic Pump Track Design for Adjustable Squeezing Force
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Solution Overview
Problem
Existing peristaltic pumps have limitations such as non-adjustable force distribution, complex structures, and stress on motor shafts due to the use of springs or flexible arms, which hinder continuous pressure application and complicate maintenance.
Innovation Solution
A linear peristaltic pump design featuring a track or guideway with alternating circular and curved sections allows for adjustable force distribution by varying the radial spacing, eliminating the need for springs and reducing stress on the motor shaft, enabling continuous pressure and simplified maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If springs or flexible arms are used to impel the medium, then the tube can be squeezed to forward liquid, but the forces act at full strength on the rotor shaft and must be absorbed by the motor shaft or bearings, increasing complexity and stress
Solution Approach 1:
The device is divided into a stator and a rotor, with the squeezing function separated from the rotational function. The stator contains the track and squeezing elements, while the rotor contains only the drive elements, allowing independent optimization of each component and reducing the complexity of the overall system.
Solution Approach 2:
The spring-loaded arms and flexible arms are extracted from the rotor and transferred to the stator. This removes the harmful forces from the rotor shaft and motor bearings, eliminating the need for complex spring mechanisms and flexible arms while maintaining the squeezing function.
2Force
If springs are used to provide squeezing force, then the tube can be compressed to convey fluid, but the force cannot be adapted and the design becomes complex
Solution Approach 1:
The squeezing force is made dynamically adjustable through the track design, which allows the radial spacing between opposing squeezing elements to be varied. This enables continuous adaptation of the squeezing force without requiring complex spring mechanisms, achieving both force adaptability and structural simplicity.
3Force
If the distance between the tube support and rotor rotational axis is varied to adapt force, then the squeezing force can be adjusted, but the amount of liquid product forwarded is varied and the structure becomes more complex
Solution Approach 1:
The track is designed with variable radial spacing in specific sections, allowing the squeezing force to be adjusted independently of the rotational speed. This dynamic design enables optimization of both squeezing force and liquid flow rate by controlling the spacing in different regions of the track, maintaining productivity while achieving force adjustment.
4Force
If a complex structure is used to achieve continuous pressure build-up, then the force curve can be controlled, but maintenance and repair become difficult
Solution Approach 1:
The device is segmented into modular components (stator with track, rotor with drive elements, tube support) that can be independently accessed and maintained. The separation of the track from the rotor allows the track to be serviced without disassembling the entire system, significantly easing maintenance while achieving continuous pressure build-up through the track design.
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 design provides a simple, cost-effective solution for maintaining consistent pressure throughout the pumping process, reducing stress on the motor shaft and facilitating easier maintenance by allowing direct force transfer into the housing, thus enhancing the operational efficiency and reliability of the peristaltic pump.
Implementation Method 1
the squeeze elements of the inserted rotor are guided along the guideway... the linear or curved course of the first subregion... results in a plurality of first spacings relative to the circular course... one of the plurality of first spacing is a first maximum spacing
Data Source
AI summary
The invention relates to a device for a linear peristaltic pump for conveying a fluid through a flexible tube, with a track or guide- or slideway, a rotor for a device and a linear peristaltic pump, wherein the device comprises a continuously running track or slideway, wherein the track or slideway has, in sections, a circular course with a radius and a midpoint. Further, the track or guideway or slideway comprises, first and second subregions, which are preferably curved courses spaced apart from the circular course and configured such that in the radial direction, a first length is a difference between the radius and a first spacing relative to the circular course and wherein, in the radial direction, a second length is a sum of the radius and a second spacing relative to the circular course.