Peristaltic Pump End Fitting Compression Ring Sealing
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Solution Overview
Problem
Existing peristaltic pump end fittings are difficult and time-consuming to assemble, and can be incorrectly assembled, leading to leakage of fluids and poor pump performance due to air intake at suction ports.
Innovation Solution
An end fitting comprising a bracket with a compression ring and an insert, where the compression ring is compressed between the bracket and a port to seal the tube, reducing its axial extent and increasing its radial extent, thereby compressing the tube against the insert for secure sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional end fittings with rubber bushes, brackets, and multiple sealing components are used, then sealing function is achieved, but assembly complexity and time increase significantly
Solution Approach 1:
The patent combines multiple sealing components (rubber bush, O-ring, compression ring) into a single integrated end fitting assembly. The bracket, compression ring, and insert are merged into one unit that can be installed as a single component, eliminating the need for separate assembly steps while maintaining the sealing functionality of the traditional multi-component design.
Solution Approach 2:
The integrated end fitting serves multiple functions simultaneously: the bracket provides structural support and positioning, the compression ring provides sealing against the port, and the insert provides sealing against the tube. This multi-functional design replaces the need for separate sealing components while achieving the same sealing reliability.
2Reliability
If traditional multi-component end fittings are used, then sealing is achieved, but assembly time and potential for incorrect assembly increase
Solution Approach 1:
The sealing components are pre-assembled and pre-positioned in the correct configuration during manufacturing of the integrated end fitting. The compression ring is pre-positioned between the bracket and port, and the insert is pre-positioned to receive the tube, eliminating the need for time-consuming field assembly and ensuring correct positioning from the start.
Solution Approach 2:
By merging all sealing components into a single integrated assembly, the patent reduces the number of assembly steps from multiple component installations to a single installation operation, dramatically reducing assembly time while maintaining sealing reliability.
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 solution simplifies the assembly process, ensures effective sealing to prevent fluid leakage, and enhances the performance of the peristaltic pump by eliminating air intake issues, while providing strain relief and improved hygiene by compressing the tube securely.
Implementation Method 1
the compression ring is compressed between the first abutment shoulder and the port so as to seal the port and such that the void defined by the compression ring is deformed; wherein the deformation of the void reduces its axial extent and increases its radial extent, thereby compressing the tube against the insert
Implementation Method 2
the void defined by the compression ring is deformed; wherein the deformation of the void reduces its axial extent and increases its radial extent
Implementation Method 3
compressing the tube against the insert
Implementation Method 4
a fastener for connecting the bracket to the port so as to draw the bracket axially towards the port, whereby the compression ring is compressed between the first abutment shoulder and the port so as to seal the port
Data Source
AI summary
An end fitting for a tube housed by a cavity and a method of installing a tube in a cavity are described which use a compression ring that defines a void having an axial extent and a radial extent. The compression ring is compressed between a bracket of the end fitting and a port of the cavity by drawing the bracket axially towards the port. This seals the port and deforms the void defined by the compression ring. The deformation of the void reduces its axial extent and increases its radial extent, thereby compressing the tube against an insert received within the interior of the tube.