Hyperboloid Agitating Device Ribs for Sewage Efficiency
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Solution Overview
Problem
Existing agitating devices in sewage treatment, with hyperboloid-like agitating bodies, have limited efficiency and struggle to effectively remove deposits and pollutants, necessitating an improvement in energy transmission and gas bubble escape mechanisms.
Innovation Solution
The agitating device features ribs with increasing height from the circumferential boundary towards the shaft, breakthroughs for gas escape and axial currents, and additional ribs on the underside for enhanced liquid suction and deposit removal, manufactured from fiber-reinforced plastic for stability and ease of production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ribs with constant or decreasing height are used on the agitating body, then the agitating device has simple structure, but the efficiency is limited and cannot be increased further
Solution Approach 1:
The patent applies local quality by varying the rib height along the axial direction - ribs have different heights at different locations, with maximum height at a specific position and decreasing towards both ends. This localized variation in rib geometry optimizes the transmission of rotational energy to the liquid at different radial positions, significantly improving agitating efficiency without requiring complete structural redesign
Solution Approach 2:
The patent changes the geometric parameters of the ribs, specifically the height parameter, to optimize performance. By defining rib height as a function of axial position (with maximum height h_max at position x_max and decreasing towards both ends), the patent transforms a static uniform structure into a dynamic variable-geometry structure that adapts to different flow conditions, achieving over 20% efficiency improvement
2Reliability
If conventional agitating bodies are used, then gas bubbles accumulate underneath the agitating body, but breakthroughs and axial currents are needed to enable gas escape and deposit removal
Solution Approach 1:
The patent extracts the gas bubble accumulation problem by introducing breakthroughs (openings) in the agitating body at the shaft region. These breakthroughs provide direct escape paths for gas bubbles generated underneath the agitating body, preventing gas accumulation that would otherwise interfere with the agitating function and reduce treatment efficiency
Solution Approach 2:
The breakthroughs serve multiple functions: they enable gas bubble escape, generate axial currents that prevent deposit formation, and contribute to overall liquid circulation. This multi-functionality addresses several problems (gas accumulation, deposit removal, current generation) through a single structural feature, improving reliability without proportionally increasing complexity
3Productivity
If no further ribs are provided on the underside, then deposits form underneath the agitating body, but additional ribs are needed to generate negative pressure for liquid suction and deposit removal
Solution Approach 1:
The patent introduces asymmetry by adding ribs only on the underside (opposite side) of the agitating body, not on the upper side. These underside ribs create negative pressure during rotation, generating suction that draws liquid through the breakthroughs and prevents deposit accumulation. The asymmetric placement optimizes the pressure distribution for deposit removal while maintaining manufacturing feasibility
Solution Approach 2:
The ribs are designed with curved surfaces rather than flat geometries, with the height varying continuously along the axial direction. This curved geometry optimizes fluid flow patterns and pressure distribution, enhancing the suction effect for deposit removal while maintaining structural integrity and ease of manufacturing from fiber-reinforced plastic
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
This configuration increases efficiency by over 20% to 30% and ensures reliable removal of deposits, reducing power requirements and pollutant levels in sewage treatment, while maintaining stability and ease of manufacturing.
Implementation Method 1
Ribs with the aforementioned features enable an efficient transmission of the rotation energy of the agitating body to a liquid surrounding this
Implementation Method 2
the suggested breakthroughs enable an escape of gas bubbles which are possibly being created underneath the agitating body
Implementation Method 3
They also enable the formation of a current directed axially to the bottom of a basin into which the agitating body protrudes
Implementation Method 4
The suggested further ribs generate a negative pressure during a rotation of the agitating body. Due to this, liquid located above the agitating body is suctioned in through the breakthroughs
Implementation Method 5
manufactured from fiber-reinforced plastic for stability and ease of production
Data Source
AI summary
The invention relates to an agitating device, in which a hyperboloid agitating body (6) is connected to a drive mechanism (2, 3) by means of a shaft (4). Several ribs (7) running from the circumferential boundary (Ur) in the direction of the shaft (4) are provided on the upper side (O) of the agitating body (6). According to the invention, the efficiency of the agitating device may be improved, whereby a height (h1) of the ribs (7) at least incrementally increases from the circumferential boundary (Ur) of the agitating body (6) in the direction of the shaft (4).