Centrifugal Dispersing Device with Adjustable Rotor-Stator Gap
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Solution Overview
Problem
Conventional dispersing devices face challenges in achieving suitable dispersion with adjustable power, leading to inefficiencies such as prolonged processing times, excessive temperature rise, and yield reduction, especially when dealing with high viscosity mixtures.
Innovation Solution
A shear-type dispersing device that utilizes centrifugal force to disperse mixtures between a rotor and stator, with adjustable gap control via spacers and a cooling system to maintain appropriate temperatures, ensuring uniform distribution and high dispersing power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high power is used to disperse high viscosity mixtures, then dispersing efficiency is improved, but temperature of the mixture rises too much
Solution Approach 1:
The patent applies dynamics by making the gap between rotor and stator adjustable through interchangeable spacers. This allows the dispersing device to adapt to different viscosity levels by changing the gap size, thereby controlling the shearing force and power input dynamically. For high viscosity mixtures, a larger gap reduces excessive heating while maintaining adequate dispersing efficiency.
Solution Approach 2:
The patent changes physical parameters by allowing substitution of spacers with different thicknesses to adjust the gap between rotor and stator. This parameter adjustment enables control over shearing force and power transmission, preventing excessive temperature rise while maintaining dispersing efficiency for high viscosity mixtures.
2Power
If high power is used to disperse high viscosity mixtures, then dispersing power is improved, but yield becomes worse due to mixture remaining in the device
Solution Approach 1:
The adjustable gap mechanism allows optimization of power transmission to match the specific viscosity requirements. By adjusting the gap, the device can achieve sufficient dispersing power without excessive force that would cause mixture adhesion and yield loss.
Solution Approach 2:
By changing the gap parameter through spacer substitution, the device optimizes the balance between dispersing power and mixture release. The appropriate gap ensures adequate shearing force for dispersion while preventing excessive adhesion that would reduce yield.
3Temperature
If low power is used to disperse mixtures, then temperature control is improved, but dispersing efficiency decreases and processing time increases
Solution Approach 1:
The dynamic adjustment capability allows the device to operate at optimal power levels for different applications. For temperature-sensitive mixtures, a larger gap reduces power input and heating while still achieving adequate dispersing efficiency.
Solution Approach 2:
By adjusting the gap parameter, the device can reduce power input and shearing force when dealing with temperature-sensitive mixtures, thereby maintaining temperature control while achieving sufficient dispersing efficiency.
4Device complexity
If fixed gap between rotor and stator is used, then device structure is simplified, but adaptability to different viscosity mixtures is reduced
Solution Approach 1:
The device incorporates dynamic adaptability through interchangeable spacers that allow adjustment of the rotor-stator gap. This simple mechanism enables the device to adapt to different mixture viscosities without complicating the overall structure.
Solution Approach 2:
The spacer substitution mechanism allows easy adjustment of the gap parameter to match different viscosity requirements. This provides versatility across various applications while maintaining a simple and straightforward device 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 effective dispersion with high yield and controlled temperature, preventing adhesion and heat generation, thus improving processing efficiency and product quality.
Implementation Method 1
a rotor that rotates at a high speed and a stationary stator. It continuously disperses liquids or powdery substances in a slurry by means of a high shearing force that is generated by the rotor and stator when the liquids or the slurry flows through a narrow gap between the rotor and stator
Implementation Method 2
It disperses a mixture of a slurry or a liquid by causing it to flow by centrifugal force toward the outer circumference between a rotor and a stator that is disposed to face the rotor
Data Source
Figure 1(a)~1(b)
Figure 2(a)~2(f)
Figure 3
AI summary
[Abstract] To provide a dispersing device that carries out an appropriate dispersion having a good yield, processing within an appropriate temperature range, and having a high power to disperse. The dispersing device disperses a mixture that is slurry or a liquid by causing the mixture to flow between a rotor and a stator toward the outer circumference by centrifugal force. It comprises a container, a cover assembly that closes an upper opening of the container, a stator that is fixed under the cover assembly, a rotor that is disposed to face the lower surface of the stator, a rotary shaft that rotates the rotor, a bearing that is located above the stator, and a spacer that is detachably disposed between the rotary shaft and the rotor to adjust a gap between the rotor and the stator.