Dual-Agitator Slurry Mixer With Lid Scraper for Uniform Composition
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Solution Overview
Problem
Existing slurry mixers for secondary battery electrodes face challenges in ensuring uniform composition of liquid and powdered materials, leading to deviations in the active material distribution due to spattering and manual scraping inefficiencies.
Innovation Solution
A slurry mixer design featuring a container with a first agitator for high-speed mixing, a second agitator with planet blades for low-speed mixing, and a scraper mechanism on a rotary shaft to contact and remove slurry from the lid, ensuring uniform distribution and composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual scraping is used to remove slurry from the lid, then the slurry can be removed, but the composition uniformity deteriorates due to operator deviation
Solution Approach 1:
The scraper is coupled to the rotary shaft of the second agitator, allowing it to automatically scrape the lid surface during the mixing process without requiring manual intervention. The scraper rotates together with the second agitator, continuously removing slurry from the lid and returning it to the container, thereby eliminating operator deviation and ensuring consistent composition uniformity
Solution Approach 2:
The scraping function is extracted from the mixing system and implemented as a separate, dedicated component (the scraper) that is independently coupled to the second agitator's rotary shaft. This separation allows the scraping operation to be performed automatically during mixing, removing the need for manual scraping while maintaining composition uniformity
2Productivity
If high-speed agitation is used to mix the slurry, then mixing efficiency improves, but material spattering increases and attaches to the lid
Solution Approach 1:
The scraper converts the harmful effect of material spattering onto the lid into a beneficial process by automatically collecting and returning the spattered slurry to the container. The scraper utilizes the rotational motion of the second agitator to continuously scrape the lid surface and drop the collected slurry back into the mixture, transforming the spattering problem into an enhanced mixing process that maintains composition uniformity
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 ensures substantial uniformity of the slurry composition, reducing manual intervention and deviations, thereby enhancing the consistency and performance of the active material layer on secondary battery electrodes.
Implementation Method 1
a first agitator coupled to the lid, and configured to rotate to mix the slurry
Implementation Method 2
a second agitator coupled to the lid at one side of the first agitator, and configured to rotate or revolve to mix the slurry, and the second agitator may include a pair of first and second planet blades
Implementation Method 3
a scraper coupled to a rotary shaft of a rotor for operating the second agitator, and configured to contact a lower surface of the lid
Data Source
AI summary
Provided is a slurry mixer. The slurry mixer includes a container configured to receive a slurry including liquid material and powdered material, a lid configured to cover the container, a first agitator coupled to the lid, and configured to rotate to mix the slurry, a second agitator coupled to the lid at one side of the first agitator, and configured to rotate or revolve to mix the slurry, and a scraper coupled to a rotary shaft of a rotor for operating the second agitator, and configured to contact a lower surface of the lid.