Reversible Powder Pump with Conduit Switch for Coating
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Solution Overview
Problem
Existing powder feeding devices for spray coating are inefficient in utilizing coating powder, as they rely on partial vacuum and compressed air to aspirate and expel powder, lacking versatility and effective powder management.
Innovation Solution
A reversible powder pump with a conduit switch and powder chambers, allowing for alternating vacuum and compressed air usage to aspirate and expel powder between two hookups, enabling efficient powder delivery and recovery through pneumatic movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If a conventional powder pump using partial vacuum and compressed air is used, then powder can be aspirated and expelled, but powder utilization efficiency is low and the device lacks versatility
Solution Approach 1:
The powder pump is designed with reversible feed direction capability, allowing it to function as both a powder delivery device and a powder recovery device. The conduit switch enables the pump to alternately connect different powder hookups, making a single device perform multiple functions that previously required separate systems, thereby improving powder utilization efficiency while maintaining versatility
2Adaptability or versatility
If a single-direction powder pump is used, then powder delivery is straightforward, but the device cannot perform both delivery and recovery functions
Solution Approach 1:
The powder pump incorporates a reversible feed direction mechanism with a conduit switch that can alternately connect different powder hookups. This dynamic switching capability allows the single pump to adapt between delivery and recovery modes without requiring multiple fixed-direction pumps, achieving functional versatility while avoiding the complexity of multiple separate devices
Solution Approach 2:
By designing the pump to perform both powder delivery and recovery functions through reversible operation, the invention makes a single device universal. The conduit switch enables the same pump to connect to different powder sources and destinations alternately, eliminating the need for separate delivery and recovery systems
3Productivity
If continuous powder flow is maintained, then productivity is high, but powder waste increases due to inability to recover excess powder
Solution Approach 1:
The reversible powder pump enables recovery of excess or unused powder by alternating between delivery and recovery modes. The conduit switch facilitates connecting the pump to recovery hookups, allowing powder that would otherwise be wasted to be collected and reused, thereby reducing substance loss while maintaining high productivity during active coating operations
4Adaptability or versatility
If separate delivery and recovery systems are used, then functional versatility is achieved, but device complexity and space requirements increase
Solution Approach 1:
The invention merges the functions of separate powder delivery and recovery systems into a single reversible powder pump. The conduit switch enables one pump to alternately perform both functions by connecting to different powder hookups, eliminating the need for multiple separate devices and reducing overall system complexity and space requirements
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 enhances powder utilization by allowing reversible pneumatic movement and efficient powder management, enabling versatile applications such as powder delivery and recovery, improving the overall efficiency of the coating process.
Implementation Method 1
a partial vacuum aspirates a powder dose into a powder chamber
Implementation Method 2
the same or another powder aperture is loaded with compressed air which expels the powder dose from the powder chamber
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A spraycoating powder feed apparatus. It contains a powder pump (4) of which the direction of feed is reversible and a conduit switch (10) to alternatingly link either of two powder conduits (26, 28) to a powder hookup (8) of the powder pump as a function of the conveyance direction of the powder pump.