Composite Dust Collection Plates for Corrosion and Tip Discharge Control
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Solution Overview
Problem
Existing high-voltage electrostatic dust removal devices using metal pole plates suffer from corrosion, tip discharge, high material and transportation costs, and reduced purification efficiency due to burring, along with high maintenance needs.
Innovation Solution
A dust collection plate with a rigid insulation layer and conductive layer, featuring slotted or semicircular openings and grooves, and a lightweight design to minimize thickness and weight, combined with a frame structure of alternately superimposed ground and high-voltage dust collection plates for improved ventilation and dust holding capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal pole plate is used for dust collection, then the device can achieve stable electrostatic dust removal performance, but the service life is reduced due to corrosion and the material cost increases
Solution Approach 1:
The patent uses a composite structure consisting of a rigid insulation layer and a conductive layer. The rigid insulation layer (made of materials like polycarbonate, polypropylene, or phenolic plastic) provides corrosion resistance and structural stability, while the conductive layer (made of conductive materials like graphite, graphene, or conductive ink) provides the necessary electrostatic properties. This composite material approach eliminates corrosion issues while maintaining electrostatic dust removal performance.
Solution Approach 2:
The patent changes the material parameters from traditional metal to a composite structure with specific electrical and mechanical properties. The conductive layer is designed with controlled thickness (0.005-0.2mm) and conductivity to achieve the required electrostatic field strength, while the insulation layer thickness (0.1-2mm) is optimized for mechanical strength and corrosion resistance. This parameter optimization allows non-metallic materials to replace metal while maintaining performance.
2Device complexity
If a metal pole plate is used for dust collection, then the device structure is simple, but the weight increases and transportation cost increases
Solution Approach 1:
The patent employs thin-film technology where the conductive layer is applied as a thin coating (0.005-0.2mm) on the rigid insulation layer. This thin-film approach dramatically reduces the weight compared to solid metal plates while maintaining the necessary electrical conductivity and structural integrity. The flexible nature of the layered structure also allows for easier manufacturing and installation.
3Ease of manufacture
If a metal pole plate with sharp edges is used, then the manufacturing is simple, but tip discharge occurs and purification efficiency decreases
Solution Approach 1:
The patent addresses the sharp edge issue by designing the conductive layer to extend beyond the edges of the rigid insulation layer, creating a rounded or extended edge profile. This curvature design prevents sharp corners that would cause tip discharge (corona discharge), thereby improving purification efficiency. The conductive layer can be extended by 0-4mm beyond the insulation layer edges, creating a smooth transition that eliminates electric field concentration at sharp edges.
4Strength
If the dust collection plate thickness is increased for strength, then the structural stability improves, but the effective ventilation area decreases
Solution Approach 1:
The patent uses a composite layered structure where a relatively thin rigid insulation layer (0.1-2mm) provides structural strength and stability, while a very thin conductive layer (0.005-0.2mm) provides electrostatic functionality. This composite approach achieves the required mechanical strength with minimal thickness, thereby maximizing the effective ventilation area. The layered composite structure provides high strength-to-thickness ratio.
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 provides a corrosion-resistant, lightweight, and efficient purification device with increased effective ventilation area, higher dust collection capacity, and extended maintenance cycles, while avoiding tip discharge and maintaining high purification efficiency.
Implementation Method 1
The electrostatic technology charges particulate matters in gas through ionization modules
Implementation Method 2
the charged particulate matters are adsorbed by the electric field formed by a dust collection module
Data Source
AI summary
The present invention relates to a dust collection plate and a purification device, and belongs to the technical field of air purification. The dust collection plate includes a body, where the body includes a rigid insulation layer and a conductive layer, the conductive layer is located on an upper surface and a lower surface of the rigid insulation layer, and a plurality of fixed mounting positions are provided on an edge of the body in a length direction thereof. According to the present invention, the technical problems of short service life caused by the use of a metal pole plate in the existing technology, the influence on the purification efficiency due to tip discharge, large weight, high material cost as well as high transportation cost can be solved.