Membrane Filtration Spring Oscillation System
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Solution Overview
Problem
Current membrane filtration devices for biologically contaminated wastewater in agriculture are inefficient due to high energy input and short operating times, and existing solutions do not provide economical operation methods.
Innovation Solution
A membrane filtration device with a spring-based oscillation system that couples the membrane package to an external frame, allowing for efficient oscillation with reduced energy input and increased oscillation amplitude, utilizing springs arranged in sets to achieve a resonance frequency that enhances shear forces during filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If rigid actuators or electromechanical torsional resonators are used to directly oscillate the membrane package, then oscillation is achieved, but energy input becomes too high and operating time becomes too short
Solution Approach 1:
The patent applies mechanical vibration through springs that are set into oscillation by an oscillation unit. The springs transmit vibratory motion to the membrane package, creating shear forces at the membrane surface that prevent clogging. This vibration-based approach reduces energy consumption compared to rigid actuators while extending operating time between membrane replacements.
Solution Approach 2:
The springs serve as intermediary elements between the oscillation unit and the membrane package. Instead of directly coupling the actuator to the membrane package (which requires high energy), the springs mediate the energy transfer, allowing for more efficient oscillation transmission and reducing the overall energy input required for effective filtration.
2Reliability
If high oscillation amplitude is used to prevent membrane clogging, then filtration efficiency improves, but energy consumption increases
Solution Approach 1:
The patent employs periodic oscillation of the springs to generate shear forces that prevent membrane clogging. The oscillatory motion creates alternating shear stress on the membrane surface, effectively removing deposited particles without requiring continuously high energy input. This periodic action maintains filtration efficiency while reducing overall energy consumption compared to constant high-amplitude vibration.
Solution Approach 2:
The patent optimizes oscillation parameters (frequency, amplitude, duration) to achieve effective membrane cleaning at lower energy levels. By carefully selecting and adjusting these parameters, the system achieves sufficient shear force generation to prevent clogging without the excessive energy consumption that would result from continuously high-amplitude oscillation.
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 device achieves efficient membrane filtration with lower energy input and longer operating times, effectively handling biologically contaminated wastewater by optimizing the oscillation system's resonance frequency and amplitude, enabling economical operation.
Implementation Method 1
at least one spring whose main direction of spring action extends parallel to the plane of the membrane filter
Implementation Method 2
create oscillation in a direction parallel to the membrane filter elements
Data Source
AI summary
The invention relates to a membrane filtration device comprising a plurality of planar membrane filter elements which are combined to form a membrane package and are disposed within the membrane package parallel to and spaced apart from one another. A wall encloses the membrane package on all sides, and within which at least one inlet chamber which is connected to at least one inlet, and at least one outlet chamber which is connected to at least one outlet. An oscillation unit is connected to the membrane package and the wall to induce oscillation in a direction parallel to the membrane filter elements. The oscillation unit is connected to a frame which encloses the membrane package and which is connected to the wall of the membrane package by means of least one spring, whose main direction of spring action extends parallel to the plane of the membrane filter.