Compressed Air Jet Port Structure for Even, Low-Fouling Discharge
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Solution Overview
Problem
Existing compressed air jet devices for sewage treatment are costly to manufacture, prone to dirt adhesion, and uneven air jet distribution, with potential clogging issues.
Innovation Solution
The device features a discharge port member with a reduced wall thickness and mirror surface finish, made of synthetic resin, and includes recesses and ribs for even air distribution, reducing production costs and facilitating easy dirt removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If bowl-shape bodies are manufactured one by one by mechanical working, then manufacturing precision can be achieved, but manufacturing cost increases
Solution Approach 1:
The discharge port member is divided into a modular structure with multiple bowl-shape bodies arranged in parallel, each connected to the compressed air supply pipe. This segmentation allows for standardized mass production of individual modules while maintaining manufacturing precision, reducing overall production costs through economies of scale
Solution Approach 2:
The invention transitions from mechanical working to injection molding for manufacturing the bowl-shape bodies. This parameter change in the manufacturing process enables high-precision replication of the discharge port geometry while significantly reducing production time and cost through mold-based mass production
2Ease of operation
If the pipe skimmer is positioned in wastewater, then scum removal function is achieved, but jet holes are easily polluted and clogged
Solution Approach 1:
The compressed air jet device is extracted from the wastewater environment by positioning it above the water surface, connected to the pipe skimmer via the discharge port member. The jet holes are located in the bowl-shape bodies that face downward but remain positioned to minimize direct contact with wastewater, reducing pollution and clogging while maintaining the scum removal function
Solution Approach 2:
Instead of positioning the jet holes upward or horizontally where they would directly face the wastewater flow, the invention inverts the orientation by facing the jet holes downward. This inversion, combined with the downward-facing bowl-shape configuration, allows compressed air to be injected effectively while minimizing exposure to pollutants in the wastewater
3Productivity
If the opening of the pipe skimmer is sank in water, then scum flows into the opening, but the compressed air jet device needs to be positioned in wastewater
Solution Approach 1:
The invention resolves the spatial conflict by using vertical dimensionality - the pipe skimmer opening is sank in water to enable scum inflow, while the compressed air jet device is positioned in the vertical dimension above the water surface. The discharge port member bridges these two vertical positions, allowing compressed air to be supplied from above to the scum at the water interface without submerging the jet device itself
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 enables low-cost manufacturing, prevents dirt adhesion, allows easy dirt removal, and ensures even compressed air jetting, enhancing efficiency and cost-effectiveness.
Implementation Method 1
jet the compressed air upward along the wall surface. As a result, scum can smoothly flow into the opening of the pipe skimmer
Implementation Method 2
the discharge port member, made of synthetic resin, has a mirror surface finish... prevents dirt adhesion, allows easy dirt removal
Data Source
Figure 1
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Figure 4~6
AI summary
Provided is a compressed air jet device A composed of an discharge port member 1 provided on a pipe P for connecting to a compressed air supply source such that the opening thereof faces downwards, and a hole portion 14 provided in the connection 10 between the pipe P and the discharge port member 1 and allowing communication between the interior of the pipe P and the interior of the discharge port member 1, wherein the vertical cross-sectional shape of the peripheral wall 2 of the discharge port member is formed so that the interior side and/or the exterior side of the discharge port member are inclined to have a smaller wall thickness towards the free end of the opening 1a.