Coanda Airflow Discharge Mouth for Powder Buildup Removal
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Solution Overview
Problem
Existing mixing apparatuses for powder, grain, and paste products suffer from inefficient removal of accumulated materials from the inner and outer surfaces of the discharge mouth and closing cap due to the limited effectiveness of the feeding ducts.
Innovation Solution
The apparatus incorporates a pneumatic blowing unit with manifold channels that utilize the Coanda effect to direct compressed air flows along the discharge mouth and closing cap surfaces, enhancing the removal of accumulated materials using channels with varying cross-sections and a gasket for hermetic closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional feeding ducts are used to remove accumulated material, then the structure remains simple, but the removal effectiveness is insufficient
Solution Approach 1:
The patent applies pneumatic principles by introducing a pneumatic blowing unit that uses compressed air to remove accumulated material from the discharge mouth and closing cap surfaces. The feeding ducts are configured to deliver compressed air flows that effectively clear material buildup, replacing insufficient conventional removal methods with a pneumatic-based solution that enhances reliability of material removal.
Solution Approach 2:
The patent employs the Coanda effect by configuring feeding ducts to direct compressed air flows along the curved surfaces of the discharge mouth and closing cap. This utilizes aerodynamic attachment of the air flow to the surfaces, creating a cleaning action that follows the contour of the components, thereby improving material removal effectiveness through dimensional airflow configuration rather than direct mechanical contact.
2Productivity
If feeding ducts are used for material removal, then the device structure remains simple, but complete removal of accumulated products is not guaranteed
Solution Approach 1:
The patent implements local quality by configuring manifold channels with varying cross-sections along their length. The channels have different dimensions at different locations to optimize compressed air flow distribution to specific areas where material accumulation occurs most frequently. This localized optimization of channel geometry enhances discharge efficiency by directing cleaning force precisely where needed on the discharge surfaces.
Solution Approach 2:
The patent applies parameter changes by varying the cross-sectional dimensions of the manifold channels throughout their length. The channels transition from larger to smaller cross-sections or vice versa depending on the required air flow distribution. This parameter variation optimizes the compressed air delivery to different zones, ensuring complete material removal and improving overall productivity of the discharge process.
3Reliability
If compressed air blowing is applied to remove material, then material removal effectiveness improves, but energy consumption increases
Solution Approach 1:
The patent extracts and utilizes the Coanda effect to improve compressed air utilization efficiency. By configuring the feeding ducts to leverage the aerodynamic attachment phenomenon, the system maximizes the cleaning effectiveness of the compressed air flow along the discharge surfaces. This extracts beneficial aerodynamic principles to enhance cleaning while optimizing energy use of the compressed air system.
Solution Approach 2:
The pneumatic blowing unit is configured to automatically remove accumulated material during or after the discharge cycle without requiring additional manual intervention or complex mechanical cleaning mechanisms. The compressed air system serves the cleaning function autonomously, improving surface cleaning effectiveness while avoiding the energy consumption of continuous mechanical agitation or additional cleaning 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
The solution effectively prevents material accumulation and facilitates complete discharge by ensuring thorough removal of materials from the discharge surfaces, improving operational efficiency and reducing costs.
Implementation Method 1
The apparatus incorporates a pneumatic blowing unit with manifold channels that utilize the Coanda effect to direct compressed air flows along the discharge mouth and closing cap surfaces
Data Source
AI summary
An apparatus for the treatment of powder, grain, paste products or the like has a treatment chamber provided with a loading mouth for at least one powder, grain or similar product and with a discharge mouth for the product; a closing cap for the discharge mouth; and at least one annular manifold, which is obtained in the discharge mouth or in the closing cap and communicates with the outside through an annular outlet channel configured to feed a compressed air flow along an inner surface of the discharge mouth and/or along an outer surface of the closing cap.