Platform Shaker Corrosion Resistance in CO2 Environments
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Solution Overview
Problem
Platform shakers in CO2-rich environments suffer from corrosion and mechanical failure due to reaction with carbon dioxide and humidity, leading to a short useful life, as existing sealed designs are difficult and costly to maintain.
Innovation Solution
A platform shaker with an open-to-atmosphere design featuring a corrosion-resistant electric motor with a passivated stainless steel output shaft and conformal-coated electronic components, combined with a heat-cured dry film lubricant coating on mechanical parts to protect against CO2-induced corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the platform shaker uses conventional electrical components and mechanical parts, then the device is simple and cost-effective, but the components corrode rapidly in CO2-rich environments leading to short useful life
Solution Approach 1:
The patent applies composite protective coatings combining multiple materials: conformal coatings (epoxy or polyurethane) on electrical components, chromic acid conversion coating on metal parts, and dry film lubricant coatings on moving mechanical components. This multi-layer composite approach provides comprehensive corrosion protection against CO2 and humidity while maintaining the simplicity and cost-effectiveness of the overall device design.
2Reliability
If the platform shaker housing is sealed to protect components from CO2 environment, then component protection is improved, but sealing difficulty and manufacturing cost increase significantly
Solution Approach 1:
Instead of sealing the entire housing, the patent applies protective coatings locally to specific components that are most vulnerable to corrosion: conformal coatings on electrical components, chromic acid coating on metal parts, and dry film lubricant on moving mechanical parts. This localized protection approach achieves component protection without the complexity and cost of sealing the entire housing.
3Reliability
If corrosion-resistant materials and coatings are applied to all components, then protection from CO2 environment is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent applies different types of protective coatings to different components based on their specific needs: conformal coatings for electrical components, chromic acid conversion coating for metal parts, and dry film lubricant for moving mechanical components. This targeted approach provides optimal corrosion resistance for each component type while maintaining ease of manufacture through standardized coating processes.
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
Enables long-term operation in CO2-rich environments without significant wear, as the corrosion-resistant materials and coatings effectively shield electrical and mechanical components from corrosive effects, extending the shaker's useful life.
Implementation Method 1
the shaker control has components treated with a conformal coating
Implementation Method 2
the output shaft is made from a passivated stainless steel
Implementation Method 3
the sealed motor casing is treated with a non-dyed, Type 1, chromic acid coating
Implementation Method 4
the components of the eccentric drive assembly are treated with a heat cured, dry film lubricant corrosion inhibiting coating
Data Source
AI summary
A platform shaker for use in a CO2 rich environment that has a corrosion resistant output shaft and a corrosion resistant, sealed motor casing. An eccentric drive assembly is connected between the output shaft and a platform and has components treated with a corrosion inhibiting coating. A shaker control controls the electric motor has components treated with a conformal coating.