Ceramic Disk Flexible Tube for Abrasive Flow and Tight Bends
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Solution Overview
Problem
Existing abrasive material conveying tubes made of plastic or elastomeric materials deteriorate rapidly due to abrasion, requiring frequent maintenance and incurring significant costs, and prior solutions with ceramic spheres limit curvature and flow rate, making them unsuitable for certain applications.
Innovation Solution
A flexible tube design featuring a tubular body with an inner side wall coated by partially embedded circular disks of ceramic material and an elastomeric matrix, reinforced with synthetic fabrics and copper braids, allowing for improved abrasion resistance and flexibility without reducing the passage lumen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ceramic spheres are embedded in the tube walls, then abrasion resistance is improved, but passage lumen is reduced and curvature is limited
Solution Approach 1:
The tube wall is segmented into distinct functional layers: an inner ceramic layer for abrasion resistance, an intermediate transition layer for stress distribution, and an outer polymer layer for flexibility. This segmentation allows each layer to perform its specific function without compromising the others, resolving the contradiction between protection and flow capacity.
Solution Approach 2:
The protective element geometry is changed from spherical (3D protruding objects) to planar/circular (2D surface elements). This dimensional change allows the protective elements to be embedded flush with the inner surface, maintaining passage lumen while providing abrasion resistance through a distributed pattern rather than discrete protruding spheres.
2Reliability
If ceramic spheres are embedded in the tube walls, then abrasion resistance is improved, but curvature capability is limited
Solution Approach 1:
The tube employs a flexible polymer outer layer that can bend and deform without compromising the integrity of the embedded ceramic protective elements. The planar geometry of the ceramic elements allows them to be distributed in a way that accommodates curvature, unlike spherical elements that would contact each other at bent sections.
Solution Approach 2:
The tube is constructed as a composite material system combining ceramic particles (for abrasion resistance) with flexible polymer matrices (for curvature capability). The composite structure allows the rigid ceramic phase to provide protection while the flexible polymer phase enables bending and deformation without element failure or interference.
3Adaptability or versatility
If plastic or elastomeric tubes are used, then flexibility is maintained, but abrasion resistance deteriorates rapidly
Solution Approach 1:
The tube uses a composite structure where a flexible polymer base material provides the required flexibility and formability, while embedded ceramic particles provide enhanced abrasion resistance. This composite approach combines the advantages of both materials without sacrificing the inherent flexibility of the polymer matrix.
Solution Approach 2:
The tube structure implements local quality by concentrating the ceramic protective elements specifically at the inner surface where abrasion occurs, while the outer polymer layers maintain their flexible characteristics. This localized reinforcement provides abrasion resistance exactly where needed without compromising the overall flexibility of the tube structure.
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 tube provides extended maintenance intervals, maintains high flow rates, and allows for tight curvatures, reducing maintenance costs and ensuring effective conveyance of abrasive materials while dissipating electrostatic charges.
Implementation Method 1
copper braids, allowing for improved abrasion resistance and flexibility without reducing the passage lumen... dissipating electrostatic charges
Data Source
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AI summary
A flexible tube (4) for conveying abrasive materials comprising a tubular body (8) extending along a main extension axis (Z-Z), the tubular body (8) having a thickness (12) extending from an inner side wall (16), which delimits an inner cavity (20) used for transporting abrasive material, to an outer side wall (24), opposite to said inner side wall (16) along a radial direction (R-R), perpendicular and incident to said main extension axis (Z-Z), wherein said tubular body (8) comprises a covering layer (28) at the outer side wall (24). The tubular body (8) comprises an elastomeric matrix (32) in which there are at least partially embedded circular disks (36) having diameter (D) and flat faces, made of ceramic material, having a first flat face (40) directly facing said inner cavity (20) so as to at least partially form the inner side wall (16) and a second flat face (44) embedded in the elastomeric matrix (32).