Powder-Liquid Mixing Device with Dynamic Discharge Control
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Solution Overview
Problem
Existing powder-liquid mixing and dispersing devices face challenges with slurry backflow and low filling rates due to mismatched discharge and feed speeds, leading to reduced mixing and dispersing effectiveness and underutilization of apparatus capacity.
Innovation Solution
A device with a powder pulverizing mechanism, a liquid feed chamber of ring-shaped structure, and a dispersing mechanism featuring a cylinder-shaped dispersing wheel or stirring paddles, ensuring efficient pulverization and shearing of powder and liquid, with controlled gaps for optimal shearing and retention, allowing for synchronized rotation and recirculation to achieve high slurry filling rates and dispersing effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the discharge speed is increased to prevent slurry backflow and blockage, then the reliability of operation is improved, but the slurry filling rate decreases and mixing and dispersing effect is reduced
Solution Approach 1:
The patent applies dynamics by making the discharge speed adjustable and variable rather than fixed. The discharge valve can be dynamically controlled to match the feed speed of liquid and powder, allowing the system to adapt to different operating conditions. This dynamic adjustment enables the discharge speed to be optimized for each specific case, preventing both backflow and excessive filling rates.
Solution Approach 2:
The patent changes the parameter of discharge speed to be variable and controllable. By introducing a discharge valve that can be adjusted, the system allows continuous modification of the discharge speed parameter. This parameter change enables the discharge speed to be matched with the feed speed, resolving the contradiction between preventing backflow and maintaining high filling rate.
2Productivity
If the discharge speed is decreased to increase slurry filling rate, then the productivity is improved, but slurry backflow and blockage occur
Solution Approach 1:
The system uses dynamic control of the discharge valve to adjust discharge speed in real-time. This dynamic capability allows the discharge speed to be lowered when needed to increase filling rate, while being raised when necessary to prevent backflow. The dynamic adjustment ensures both high productivity and reliable operation without fixed constraints.
Solution Approach 2:
The discharge speed parameter is made variable through the discharge valve mechanism. This allows the operating parameters to be changed continuously to match feed conditions. When feed speed is high, discharge speed can be increased to prevent backflow; when feed speed is low, discharge speed can be decreased to maximize filling rate, thus resolving the contradiction.
3Manufacturing precision
If the impeller rotation speed is increased to improve dispersing strength, then the mixing and dispersing effect is improved, but the discharge speed cannot be matched with feed speed
Solution Approach 1:
The patent segments the mixing and dispersing function from the discharge function. The impeller handles mixing and dispersing independently, while the discharge valve controls discharge speed separately. This segmentation allows the impeller to operate at optimal speeds for dispersing without being constrained by discharge speed requirements, as the discharge valve independently regulates the discharge rate to match feed speed.
Solution Approach 2:
The discharge valve acts as an intermediary between the impeller and the discharge opening. It mediates the flow control, allowing the impeller to focus on mixing and dispersing while the valve independently regulates discharge speed. This intermediary component decouples the dispersing function from the discharge function, enabling optimal performance for both.
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 enables a high slurry filling rate and effective dispersing, preventing backflow and agglomeration, resulting in improved production efficiency and uniform mixtures by synchronizing the rotation of powder and liquid components and ensuring sufficient shearing and retention time within the device.
Implementation Method 1
The liquid feed chamber is provided therein with a dispersing mechanism fixedly connected to the main shaft... ensuring efficient pulverization and shearing of powder and liquid, with controlled gaps for optimal shearing and retention
Implementation Method 2
The mixing chamber is provided therein with an impeller fixedly connected to the main shaft... allowing for synchronized rotation and recirculation to achieve high slurry filling rates and dispersing effects
Implementation Method 3
A device with a powder pulverizing mechanism... ensuring efficient pulverization and shearing of powder and liquid
Data Source
AI summary
A device and apparatus for mixing and dispersing a solid and a liquid are provided. The device includes a powder pulverizing mechanism fixedly connected to a main shaft. The powder pulverizing mechanism is located in a powder feed chamber. The powder feed chamber is provided with a powder feed port. A liquid feed chamber is arranged on an outer side of the powder feed chamber. The liquid feed chamber is provided with a liquid feed port, and the liquid feed chamber is provided therein with a dispersing mechanism fixedly connected to the main shaft. A lower portion of the liquid feed chamber and a lower portion of the powder feed chamber are separately in communication with an upper portion of a mixing chamber. The mixing chamber is provided therein with an impeller fixedly connected to the main shaft.