Vane Cell Machine Side Wall Material Pairing for Water Hydraulic Wear
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Solution Overview
Problem
Vane cell machines used in reverse osmosis systems experience internal leakages due to wear issues when operating with water, as traditional lubrication methods are not effective for water-based fluids.
Innovation Solution
The side wall of the vane cell machine is divided into two surface areas: a radially inner area made of a friction-reducing plastic material, such as PEEK, interacting unfrictionally with the rotor, and a radially outer area made of metal, with the vanes having a surface of the same friction-reducing material to minimize wear during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional lubrication materials are used in vane cell machines operating with water, then the machine can function hydraulically, but wear occurs leading to internal leakages
Solution Approach 1:
The side wall is divided into two distinct surface areas with different material properties: a radially inner area made of friction-reducing plastic material (PEEK) that interacts unfrictionally with the rotor, and a radially outer area made of metal that provides structural strength. This local differentiation allows each area to perform its specific function optimally without compromising the other.
Solution Approach 2:
The side wall employs a composite structure combining two different materials: plastic material (PEEK) for the radially inner surface area that contacts the rotor, and metal for the radially outer surface area that contacts the vanes. This composite approach leverages the low-friction properties of plastic and the high strength of metal to simultaneously reduce wear and maintain structural integrity.
2Object-generated harmful factors
If friction-reducing plastic material is used on the entire side wall surface, then wear is reduced, but the structural strength and load-bearing capacity decrease
Solution Approach 1:
The side wall is divided into two distinct surface areas with different material properties: a radially inner area made of friction-reducing plastic material (PEEK) that interacts unfrictionally with the rotor, and a radially outer area made of metal that provides structural strength. This local differentiation allows each area to perform its specific function optimally without compromising the other.
Solution Approach 2:
The side wall employs a composite structure combining two different materials: plastic material (PEEK) for the radially inner surface area that contacts the rotor, and metal for the radially outer surface area that contacts the vanes. This composite approach leverages the low-friction properties of plastic and the high strength of metal to simultaneously reduce wear and maintain structural integrity.
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
This configuration significantly reduces wear and maintains internal tightness, allowing the vane cell machine to be used as a hydraulic machine, particularly in water hydraulic applications, by ensuring minimal friction and wear between moving parts.
Implementation Method 1
the side wall comprises, in a radially inner area, a surface of a third material interacting unfrictionally with the first material and, in a radially outer area a surface made of the first material
Data Source
AI summary
The invention concerns a vane cell machine having a stator and a rotor that is made of a first material, the rotor having guides comprising radially displaceable vanes that rest on an inside of the stator and border work chambers at each axial end of the rotor together with the rotor, the stator and individual stationary side walls, the vanes having, at least at some contact faces with the rotor and the stator, a second material that interacts unfrictionally with the first material. It is endeavoured to keep the wear small. For this purpose, in a radially inner area, the side wall comprises a surface of a third material interacting unfrictionally with the first material and, in a radially outer area a surface made of the first material.