Circulating Kneading Pulping System for Slurry Homogeneity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing one-pass pulping equipment for lithium battery raw material preparation has a short processing time and inadequate kneading effect between powder materials and liquid solvents, leading to suboptimal slurry quality due to its reliance on screw length.
Innovation Solution
A circulating kneading pulping system is introduced, featuring a pulping machine with a screw and a kneading tank connected through pipelines for external circulation, allowing for repeated kneading and dispersion of the slurry, enhancing the solid content and preventing blockages by diluting high-solid-content slurry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a one-pass pulping process is used, then the processing time is short, but the kneading effect between powder material and liquid solvent is poor
Solution Approach 1:
The patent implements a circulating pulping system where the slurry is continuously circulated between the pulping machine and kneading tank multiple times. The screw discharges slurry from the pulping machine back to the kneading tank, and the tank feeds it back, creating a continuous circulation loop that enables repeated kneading actions without stopping the process.
Solution Approach 2:
The system performs preliminary kneading in the kneading tank before the slurry enters the pulping machine. The tank pre-mixes the powder material with liquid solvent, and this pre-kneaded slurry is then fed into the pulping machine for further processing, ensuring adequate mixing occurs before the main pulping operation.
2Manufacturing precision
If the screw length is increased to improve kneading effect, then the kneading quality improves, but the device complexity and space requirements increase
Solution Approach 1:
The patent divides the kneading function into two separate components: a dedicated kneading tank with its own mixing mechanism and a pulping machine with a screw. Instead of relying on a single long screw to perform all kneading, the system segments the process into preliminary kneading (tank) and main pulping (screw), reducing the required screw length while maintaining kneading quality.
Solution Approach 2:
The kneading tank acts as an intermediary component between material feeding and the screw pulping process. It receives powder material, mixes it with liquid solvent, and feeds the resulting slurry to the screw, thereby mediating the kneading function and allowing the screw to focus on pulping rather than mixing.
3Manufacturing precision
If high solid content slurry is produced, then the extrusion quality improves, but blockages occur in the dispersion chamber
Solution Approach 1:
The circulating system creates periodic action by continuously circulating slurry through the loop. The screw periodically discharges slurry to the tank, and the tank periodically feeds it back, creating rhythmic flow patterns that prevent static accumulation and reduce blockage risk in the dispersion chamber while maintaining high solid content.
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 system effectively improves the kneading effect of the slurry by enabling full kneading and dispersion, increasing the solid content and preventing blockages, thus enhancing the quality of the slurry produced.
Implementation Method 1
the screw based on the pulping machine reciprocally sends the slurry with high solid content into the kneading tank
Implementation Method 2
it is necessary to use a kneading tank (commonly used ribbon kneading tank) to mix the powder material with a liquid solvent and fully knead
Data Source
AI summary
Disclosed is a circulating kneading pulping system, including a pulping machine and a kneading tank; the pulping machine is provided with a powder feed port, a pulping chamber connected to the powder feeding port, and a slurry outlet communicated with the pulping chamber, and the screw rod of the pulping machine is provided in the pulping chamber; the slurry outlet of the pulping machine is connected with the kneading inlet of the kneading tank through a first pipeline, and the kneading tank is equipped with a liquid solvent inlet, and the kneading outlet of the kneading tank is connected with the circulation pulping inlet of the pulping machine through a second pipeline.