Oval Aeration Element with Corrugated Support for Wear Reduction
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Solution Overview
Problem
Existing aeration elements for gasification of liquids, particularly in wastewater treatment, face issues with longevity due to fatigue and wear from gas bubble release, limited cross-sectional area for efficient aeration, and vulnerability to sludge or particle ingress, especially for elongated designs.
Innovation Solution
A flattened, elongated aeration element with an oval cross-section and a flexible, inflatable membrane around a corrugated support member, featuring air slits only on the top surface, a threaded air inlet, and a check valve mechanism to prevent backflow, along with a mounting bracket system for secure installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid plate structure is used as support for the flexible membrane, then structural stability is improved, but the membrane creases and wrinkles at specific points causing fatigue and wear, reducing longevity
Solution Approach 1:
The patent replaces the rigid flat plate support with a corrugated tubular support structure. The corrugated (wavy) geometry allows the flexible membrane to expand and collapse during operation without forming creases or wrinkles at specific points, thereby preventing fatigue and wear while maintaining structural stability.
2Ease of manufacture
If plate-shaped aeration elements are connected via fittings pressed into bores, then assembly is simplified, but elongated aeration elements act like lever arms under movement or liquid flow, creating excessive forces at connection locations
Solution Approach 1:
The patent transitions from rigid plate-shaped aeration elements to elongated flexible tubular elements that can dynamically bend and flex under movement or liquid flow. This flexibility prevents the elements from acting as rigid lever arms, significantly reducing the forces transmitted to connection locations while maintaining assembly simplicity.
3Strength
If a tubular aeration element with limited cross sectional area is used, then structural integrity is maintained, but aerating efficiency is limited due to restricted gas release area
Solution Approach 1:
The patent transitions from a circular cross-section to an oval cross-section with flattened sides. This geometric change increases the surface area available for gas release while maintaining structural integrity, thereby improving aerating efficiency without compromising strength.
4Object-affected harmful factors
If the flexible membrane is breached by external impact or debris, then aeration function is impaired or inhibited, but no prevention mechanism exists
Solution Approach 1:
The patent incorporates a check valve mechanism that prevents backflow of sludge or particles into the aeration element. This preliminary protective measure ensures that even if the membrane is breached, the aeration function cannot be completely inhibited by backflow, maintaining operational reliability.
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 aeration efficiency, extends the longevity of aeration elements by preventing creasing and wear, and effectively prevents sludge or particle ingress, ensuring reliable operation in various configurations and environments.
Implementation Method 1
a flexible membrane disposed around the tube... the flexible, inflatable membrane placed around a support member to expand and collapse during operation
Implementation Method 2
compressed gas is introduced into a tubular aeration element... The gas escapes via slits in the membrane... individual aeration elements are connected with the distribution conduit via fittings that during assembly are pressed into a bore in the distribution conduit accompanied by elastic deformation, thereby forming a positive connection
Implementation Method 3
an air inlet with a threaded connection to connection the aeration element to a distribution conduit
Data Source
AI summary
An aeration element for gasification or aeration of liquids includes an essentially flattened, rigid support element having a substantially oval cross-section and corrugated outer surfaces, the corrugated outer surfaces including ridges defining grooves therebetween; a threaded opening for receiving a cooperating fitting for connection to an air supply; and a flexible membrane of elastomeric material disposed around the support element. An assembly bracket includes upper and portions that can be cooperatingly attached to one another about the aeration element for securing the aeration element to a floor of a tank or pool. The assembly bracket includes through-going passages for enabling water to circulate around the bracket and reduce buoyancy of the assembly. Two aeration elements of shorter lengths can be positioned adjacent two one another, secured within assembly brackets, and connected at adjacent ends, so that one of the aeration elements functions as a conduit to the other aeration element when air is supplied into one of the aeration elements.