Powder Sieving Apparatus with Self-Cleaning Brush for Coating Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional powder sieving methods in powder coating systems are expensive, time-consuming, and prone to maintenance due to agglomeration and contamination, leading to uneven coatings and low transfer efficiency, and require separate air inlets for secondary air, increasing system complexity and cost.
Innovation Solution
A powder sieving apparatus with a cylindrical sieve and a brush holder that uses pressurized air to continuously clean and de-clog the sieve mesh, eliminating the need for separate secondary air inlets and allowing for continuous, smooth powder flow by integrating the sieving function directly into the powder suction pump assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional vibratory or gyratory sieving methods are used, then powder can be sieved, but the process becomes expensive, time-consuming, and requires separate equipment area
Solution Approach 1:
The patent combines the sieving function with the powder suction pump by integrating a sieve assembly into the pump housing. The sieve is positioned within the pump body, allowing powder to be suctioned and sieved simultaneously through the same device, eliminating the need for separate sieving equipment and reducing system complexity.
Solution Approach 2:
The powder suction pump is designed to perform multiple functions: it both suctiones powder and sieves it. The sieve assembly integrated into the pump housing enables the single device to handle both powder transport and particle size separation, making the system more versatile and reducing the number of required components.
2Manufacturing precision
If standard sieving machines are used, then powder can be sieved, but maintenance becomes expensive and cumbersome due to periodic cleaning requirements
Solution Approach 1:
The patent implements a self-cleaning mechanism where a brush assembly rotates against the sieve mesh to automatically remove accumulated powder and prevent clogging. This self-service cleaning action occurs continuously during operation, eliminating the need for periodic manual maintenance and keeping the sieve in optimal condition without external intervention.
Solution Approach 2:
The brush cleaning mechanism operates continuously during powder suction, maintaining the sieve mesh cleanliness throughout the operation. This continuous action prevents powder buildup and agglomeration on the sieve, ensuring consistent sieving performance without interruption for maintenance.
3Quantity of substance
If recovered powder is transported manually or by pumps, then powder can be moved, but agglomeration occurs and sieve mesh becomes choked
Solution Approach 1:
The patent replaces mechanical powder transport methods (manual handling or pump-based systems) with a pneumatic suction system. Powder is conveyed through air flow directly through the sieve assembly, eliminating mechanical contact that causes agglomeration and reducing the risk of sieve mesh blockage while maintaining efficient powder movement.
4Manufacturing precision
If separate secondary air inlets are added to achieve uniform spray, then spray quality improves, but system complexity and cost increase
Solution Approach 1:
The patent combines the secondary air function with the primary suction air by using a single air inlet that serves both purposes. The air flow is directed through the sieve assembly, providing both the suction force for powder pickup and the carrier air for uniform powder delivery to the spray gun, eliminating the need for separate air control systems.
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
Ensures continuous, smooth, and even powder flow, reducing maintenance needs and improving transfer efficiency by keeping the sieve mesh clean and preventing agglomeration, while simplifying the system by eliminating the requirement for separate air control panels.
Implementation Method 1
A powder sieving apparatus with a cylindrical sieve and a brush holder that uses pressurized air to continuously clean and de-clog the sieve mesh
Implementation Method 2
A primary air inlet (12) is an inlet for compressed air which creates suction and is responsible for the quantity of powder output from the pump (10)
Data Source
AI summary
This invention relates to a powder sieving apparatus for a powder coating system and a powder suction system thereof. the present invention provides a powder sieving apparatus for a powder coating system having a powder spray gun, a powder suction pump assembly, and a powder container/hopper. As per the present invention, the said sieving apparatus comprises a housing having at least one outlet connected to a suction side of the powder suction pump and an inlet connected to a suction pipe dipped in the powder container, a cylindrical sieve having a sieve mesh adapted within the housing dividing the housing into an inner and outer compartments, a brush holder rotatably and/or oscillatingly adapted in the inner compartment of the housing for cleaning the cylindrical sieve. The present siveing apparatus provides freshly sieved powder free of large impurities and the powder particles and presented to the charging device such as a powder spray gun and the particles are thus charged better resulting in substantially and better transfer efficiency and this results in lower powder consumption.