Ultrasonic Screen Cylinder Frame for Uniform Vibration and Longer Life
Solution Overview
Problem
Ultrasonic screens used in lithium battery recycling are prone to fracture along a straight line, leading to a short service life and frequent replacements, which cause material waste and productivity loss.
Innovation Solution
An ultrasonic vibrating screen design that synchronizes the amplitudes and frequencies of all screen cylinders by fixing them to a unified vibrating frame, using brackets, connecting pieces, positioning blocks, and counterweight blocks to maintain consistent vibration, preventing bending and fracture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple ultrasonic transducers are equipped in each layer of the screen to drive high-speed vibration for efficient screening, then screening efficiency is improved, but the screen is prone to fracture along a straight line and service life is reduced
Solution Approach 1:
The screen is divided into multiple independent screen cylinders (at least two) arranged from bottom to top, each capable of vibrating independently or in coordination. This segmentation allows the vibration load to be distributed across multiple cylindrical structures rather than a single flat screen, reducing stress concentration that leads to linear fractures.
Solution Approach 2:
The screen cylinders are designed with curved cylindrical surfaces instead of flat planes. This curvature distributes the vibration stresses more evenly across the screen surface and prevents the formation of stress concentration points along straight lines, thereby reducing fracture susceptibility while maintaining effective screening area.
2Strength
If the screen is reinforced with multiple improvements and reinforcements to prevent fracture, then screen strength is improved, but the complexity of the screen structure increases
Solution Approach 1:
The cylindrical shape inherently provides structural strength through its curved geometry, which distributes loads and stresses more effectively than flat surfaces. This geometric solution enhances anti-fracture strength without requiring additional reinforcement components, brackets, or complex support structures.
Solution Approach 2:
The invention replaces complex mechanical reinforcement systems (multiple brackets, support structures, and reinforcement components) with a simpler cylindrical geometric solution. The curved surface itself provides the necessary structural integrity, eliminating the need for additional mechanical strengthening elements.
3Productivity
If the screen is frequently replaced due to fracture, then continuous operation is maintained, but material waste increases and productivity is reduced
Solution Approach 1:
The screen is segmented into multiple cylindrical modules that can potentially be replaced individually rather than requiring complete screen replacement. When one cylinder becomes damaged, only that specific cylinder needs to be replaced, reducing material waste and minimizing production interruption.
Solution Approach 2:
The cylindrical design with curved surfaces inherently resists fracture propagation, extending the service life of each screen component. This geometric solution reduces the frequency of replacements needed, thereby reducing both material waste and productivity loss from frequent maintenance interruptions.
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 design extends the screen's service life by ensuring uniform vibration across all parts, reducing fractures and maintenance needs, thereby enhancing productivity and reducing material waste.
Implementation Method 1
The vibrating mechanism includes a vibrating frame and at least two ultrasonic transducers. The screen cylinders are all fixed to the vibrating frame, the ultrasonic transducers are fixed to the vibrating frame, and the ultrasonic transducers drive the vibrating frame to vibrate.
Data Source
AI summary
An ultrasonic vibrating screen includes a bottom frame, at least two screen cylinders, and a vibrating mechanism. An elastic body is provided on the bottom frame; the screen cylinders are arranged in sequence from bottom to top, each screen cylinder is provided with a screen, and one of the screen cylinders is connected with the bottom frame through the elastic body. The vibrating mechanism includes a vibrating frame and at least two ultrasonic transducers, the screen cylinders are all fixed to the vibrating frame, the ultrasonic transducers are fixed to the vibrating frame, and the ultrasonic transducers drive the vibrating frame to vibrate. By fixing all the screen cylinders with the vibrating frame, the amplitudes and frequencies of all ultrasonic transducers which are originally unsynchronized are unified to be the same amplitude and the same frequency as much as possible.