Powdering System Evacuation Opening for Residual Powder Removal
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Solution Overview
Problem
Existing powder coating systems face inefficiencies in cleaning residual powder from the tank, as the fluidized air outlet is primarily designed for fluidization and not optimized for evacuation of significant quantities of residual powder, leading to trapped powder in corners.
Innovation Solution
A dedicated evacuation opening with a movable drain allows for effective circulation and evacuation of residual powder during cleaning, enabling a higher passage section for cleaning air and powder, and the integration of cleaning nozzles for enhanced cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the fluidized air outlet is used for cleaning evacuation, then the cleaning function is performed, but the passage section is insufficient for evacuating significant quantities of residual powder
Solution Approach 1:
The invention separates the fluidized air outlet function from the cleaning evacuation function by introducing a dedicated evacuation opening. The fluidized air outlet continues to handle fluidization air evacuation, while the new evacuation opening specifically handles residual powder removal during cleaning operations. This segmentation allows each opening to be optimized for its specific function without compromising the other.
Solution Approach 2:
The invention extracts the cleaning evacuation function from the existing fluidized air outlet by creating a separate evacuation opening. This extraction allows the passage section for powder evacuation to be independently sized and positioned, removing the constraint of using the smaller fluidized air outlet for both fluidization air and powder evacuation.
2Productivity
If the fluidized air outlet passage section is increased to improve powder evacuation, then cleaning efficiency improves, but the primary function of ensuring proper evacuation of fluidized air may be compromised
Solution Approach 1:
By separating the two functions into different openings, the invention ensures that increasing the evacuation opening size for powder removal does not affect the fluidized air outlet's ability to properly evacuate fluidization air. Each opening can be independently optimized for its specific function.
Solution Approach 2:
The cleaning evacuation function is extracted from the fluidized air outlet, allowing the fluidized air outlet to maintain its original passage section and design optimization for fluidization air evacuation, while the new evacuation opening handles powder removal.
3Productivity
If a dedicated evacuation opening is added for cleaning, then powder evacuation capability improves, but the device complexity increases
Solution Approach 1:
The invention extracts only the essential evacuation function from the existing system by adding a single dedicated opening with a movable plug, rather than redesigning the entire outlet system. This minimal addition provides the needed functionality while keeping the increase in complexity manageable.
Solution Approach 2:
The movable plug on the evacuation opening serves dual purposes: it seals the opening during normal operation and can be opened for cleaning evacuation. This self-service mechanism eliminates the need for separate actuators or complex control systems, reducing overall device complexity.
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 significantly improves the cleaning efficiency by allowing a higher flow rate of cleaning air and powder evacuation, ensuring a more thorough removal of residual powder and facilitating the use of additional cleaning equipment, thus enhancing the overall cleaning process.
Implementation Method 1
a movable plug, which is movable between: a position for closing the evacuation opening, adopted in the working configuration, and an open position for the evacuation opening, adopted in the cleaning configuration
Implementation Method 2
the discharge opening is connected to a suction system, which makes it possible, in the cleaning configuration, to evacuate residual powder from the feed chamber
Implementation Method 3
a cleaning air source can be connected to the cleaning inlet to circulate cleaning air in the feed chamber; the circulation of cleaning air in the feed chamber via the cleaning inlet causes residual powder contained in the feed chamber to be evacuated
Data Source
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AI summary
The invention relates to a powdering system, having a working configuration and a cleaning configuration and comprising a powder reservoir, including a feed chamber (5) receiving powder; a projector, including a powder applicator; and a cleaning inlet (70, 82), fluidly connected to the feed chamber (5) so that, in the cleaning configuration, a cleaning air supply source (55) can be connected to the cleaning inlet (70, 82) to circulate cleaning air into the feed chamber (5).According to the invention, the powder reservoir includes an evacuation opening (60), formed through a wall (7) of the feed chamber (5) and opening into the feed chamber (5); and a movable bung (61), which is movable between a closed position, in working configuration, and an open position, in cleaning configuration, so that the circulation of cleaning air causes residual powder to be evacuated through the evacuation opening (60).