Scum Removing Apparatus With Pressurized Water And Air Spray
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Solution Overview
Problem
Conventional scum removing apparatuses face challenges in efficiently discharging large lumps of scum exceeding 10 cm in diameter, which can obstruct the flow of scum into the discharge mechanism and lead to water quality degradation due to scum mixing with treated water.
Innovation Solution
A scum removing apparatus that incorporates a tubular or trough-type scum discharging mechanism with a submerged scum inlet and a combination of pressured water and air spraying means to raise and transfer large lumps of scum, along with a blocking board to prevent scum from mixing with treated water, ensuring efficient scum discharge and maintaining water quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional scum removing apparatus uses only water flow to move scum into the pipe or trough, then the structure is simple, but large lumps of scum exceeding 10 cm in diameter cannot be effectively raised and transferred, resulting in poor scum removal efficiency
Solution Approach 1:
The patent introduces a dual-fluid system combining pressurized water and air spray mechanisms. The water spray provides hydraulic force to move scum, while the air spray creates pneumatic lift to raise large scum lumps exceeding 10 cm in diameter. This combination of hydraulic and pneumatic forces enables effective transfer of heavy scum to the discharge mechanism without increasing structural complexity significantly.
Solution Approach 2:
The scum removal process is divided into distinct functional zones: the water spray section for initial scum movement, the air spray section for lifting large lumps, and the discharge section with blocking board. This segmentation allows each component to specialize in a specific task, improving overall efficiency while maintaining manageable device complexity.
2Productivity
If conventional scum removing apparatus allows scum to mix with treated water during discharge, then the discharge mechanism can operate continuously, but water quality deteriorates due to scum contamination
Solution Approach 1:
The blocking board serves as an intermediary element positioned at the discharge point. It physically separates the scum flow from the treated water while allowing continuous operation of the discharge mechanism. The board creates a controlled interface where scum can be discharged without contaminating the treated water, maintaining both productivity and water quality.
3Productivity
If conventional scum removing apparatus uses large quantities of water to flush scum into the pipe, then scum can be removed, but water consumption increases and processing load of scum processing equipment increases
Solution Approach 1:
The introduction of air spray as a supplementary mechanism reduces the reliance on large volumes of water for scum discharge. The pneumatic force from air spray provides additional lifting capability, allowing smaller amounts of water to be used effectively. This combination reduces water consumption while maintaining scum discharge capability.
Solution Approach 2:
The system changes the physical parameters of the fluid medium by introducing compressed air alongside water spray. This parameter change (from single-phase water flow to two-phase water-air flow) increases the energy density and effectiveness of the discharge medium, reducing the total quantity of water needed for effective scum removal.
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 apparatus effectively raises and transfers large lumps of scum, reducing water usage and preventing scum from mixing with treated water, thereby enhancing the efficiency and effectiveness of scum removal while minimizing water consumption and equipment load.
Implementation Method 1
a spraying means for spraying, for example, fluid (air) made of compressed air upward is provided along the wall surface
Implementation Method 2
spraying means for spraying, for example, fluid (air) made of compressed air upward
Implementation Method 3
has a part of a scum inlet of the scum discharging mechanism submerged in water at the time of discharging scum
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A spraying means is arranged on the scum-flowing wall surface side of wall surfaces forming a scum inlet of a scum discharging mechanism. The spraying means sprays pressured water upward along the wall surface on the scum-flowing side from when a part of the scum inlet is submerged in water until the scum begins to flow into the scum inlet. As a result, even large lumps of scum exceeding 10 cm in thickness (diameter) may be lead smoothly into a pipe by the pressured water, and the amount of discharged water accompanying scum discharge may be reduced to 1/20 to 1/30 than by a conventional scum removing apparatus.