Stirring Device With Jet Orifices for High-Shear Slurry Kneading
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing high-speed slurry homogenization systems in battery production suffer from insufficient kneading capability due to limited slurry drainage to the squeezing and kneading area, resulting in weak shear rates.
Innovation Solution
A stirring device with a design comprising a stirring disc, conical columns, stirring guards with jet orifices, and stirring rods, which disperses and kneads slurry effectively through centrifugal force and thrust, combined with a screw pump to clear the kneading zone, enhancing shear rate and compaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional high-speed stirring paddles are used, then dispersing capability is strong, but kneading capability is insufficient
Solution Approach 1:
The stirring device is segmented into multiple functional components: stirring paddles for dispersing, conical columns for guiding slurry flow, jet orifices for creating high-shear zones, and stirring rods for kneading. Each component performs a specific function, and their coordinated operation resolves the contradiction between dispersing and kneading capabilities.
Solution Approach 2:
The invention adds vertical dimension to the stirring process by introducing conical columns that extend upward from the stirring paddles. This creates a three-dimensional fluid field where slurry is lifted, dispersed, and then redirected downward through jet orifices, adding a vertical circulation dimension that enhances both dispersing and kneading effects.
2Speed
If slurry is thrown out at high speed by dispersing column, then dispersing is enhanced, but quantity of slurry drained to squeezing and kneading area is limited
Solution Approach 1:
The conical columns act as intermediaries between the high-speed stirring paddles and the squeezing/kneading area. They guide and channel the slurry flow, ensuring that slurry thrown out at high speed is effectively directed to the kneading zone through the jet orifices, thereby increasing the quantity of slurry reaching the squeezing area.
Solution Approach 2:
The device utilizes hydraulic principles by creating high-velocity liquid jets through the jet orifices. The slurry is propelled at high speed through these orifices, creating intense shear zones that enhance both dispersing and kneading while ensuring adequate slurry quantity reaches the squeezing area through the hydraulic flow pattern.
3Device complexity
If conventional stirring design is used, then structure is simple, but shear rate is insufficient
Solution Approach 1:
The invention applies local quality by concentrating high-shear zones at specific locations: at the jet orifices where slurry is ejected at high velocity, and at the conical column surfaces where slurry flows downward. These localized high-shear regions provide intense kneading action without requiring the entire stirring structure to be complex.
Solution Approach 2:
The stirring paddles are designed with a porous or perforated structure featuring multiple jet orifices. This porous design allows slurry to be ejected through numerous small openings, creating multiple high-shear zones simultaneously and significantly increasing the overall shear rate while maintaining a relatively simple overall structure.
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 strong dispersal and kneading capabilities, ensuring rapid fusion of powder and liquid, thereby shortening stirring time and enhancing production efficiency.
Implementation Method 1
the slurry semifinished products preliminarily cut are divided into two parts under the centrifugal force and thrust of the stirring paddles
Implementation Method 2
One part of the slurry is further dispersed through the jet orifices of the stirring guard under the action of centrifugal force
Implementation Method 3
the dispersed slurry flows back into the fluid field and is diverted by the conical column to the stirring paddles
Implementation Method 4
the stirring paddles comprise multiple blades, each blade is fixedly connected to the side wall of the stirring guard... the stirring rods preliminarily knead and disperse the slurry
Implementation Method 5
A screw pump, which is fixedly connected to the slurry tank, and the containing cavity of the slurry tank is communicated with the screw pump
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present application relates to a stirring device 100, where the preliminarily cut slurry semi-finished product is divided into two parts under the centrifugal force and thrust of the stirring blade 114. One part of the slurry is further dispersed through the jet holes 141 of the stirring guard 140 under the action of centrifugal force, and a large amount of slurry semi-finished product is dispersed through the jet holes during the initial stirring. The dispersed slurry flows back into the fluid field and is diverted to the stirring blade by the cone column 130. At this point, the stirring rod 120 initially kneads the dispersed slurry so that the initially kneaded slurry can be dispersed again by the stirring blade. The other part of the slurry contacts the bottom of the slurry container under the action of thrust and undergoes kneading under the entire fluid field and thrust. According to the design structure and design speed of the stirring disc, when slurry with the appropriate viscosity appears, that is, when preliminary slurry deposits occur, the screw pump 300 can export the preliminary slurry deposits and simultaneously empty the space between the bottom of the stirring guard and the bottom of the slurry container, thereby solving the problem of weak kneading capability in traditional high-speed pulp uniformity systems.