Cooling Rod Stirring Vessel for Uniform Slurry Temperature
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Solution Overview
Problem
Existing stirring devices experience temperature deviation and gelation issues due to non-uniform cooling, leading to reduced mixing efficiency and quality of high-viscosity materials like slurry during high-speed stirring.
Innovation Solution
A stirring device with an inner and outer chamber configuration, featuring cooling rods protruding into the stirring space and connected to a vessel cooling space, along with a cooling drive part to supply cooling water through multiple flow passages, ensuring uniform temperature maintenance and heat exchange across the stirring space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cooling flow passage is provided only at the outer portion of the stirring space, then the structure is simple, but temperature deviation occurs between central and outer portions
Solution Approach 1:
The cooling system is segmented into multiple independent cooling flow passages: a first cooling flow passage at the outer portion and a second cooling flow passage at the central portion. This segmentation allows independent temperature control in different regions, resolving the temperature deviation problem while maintaining structural simplicity through modular design.
Solution Approach 2:
Different cooling configurations are applied to different regions: the outer portion has a cooling flow passage along the vessel wall, while the central portion has a cooling flow passage surrounding the stirring rod. This local quality approach addresses the specific cooling needs of each region, ensuring uniform temperature distribution throughout the stirring space.
2Productivity
If stirring rod rotates at high speed for slurry dispersion, then mixing efficiency is improved, but temperature rises due to friction
Solution Approach 1:
The cooling water flows continuously through both the first and second cooling flow passages during the high-speed stirring process. This continuous cooling action maintains constant temperature removal, allowing the stirring rod to rotate at high speed for efficient mixing without causing temperature rise or gelation.
Solution Approach 2:
Cooling water acts as an intermediary substance that absorbs heat generated by friction between the stirring rod and slurry. The cooling water flows through the cooling flow passages, transferring heat from the slurry to the cooling water, thereby maintaining slurry temperature while allowing high-speed stirring to proceed.
3Device complexity
If cooling water flows through outer cooling flow passage only, then the cooling system is simple, but gelation occurs in central portion
Solution Approach 1:
The cooling system is divided into two separate cooling flow passages: one for the outer portion and one for the central portion. This segmentation ensures that cooling water reaches all regions of the stirring space, preventing gelation in the central portion while maintaining system simplicity through modular configuration.
Solution Approach 2:
The central portion is equipped with a dedicated cooling flow passage that surrounds the stirring rod, providing localized cooling where it is most needed. This local quality approach prevents gelation in the central region while the outer cooling flow passage handles the outer portion, ensuring overall slurry quality.
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 effectively prevents temperature deviation and gelation, enhancing mixing efficiency by maintaining uniform temperature and facilitating easy cleaning of the stirring vessel.
Implementation Method 1
cooling water flows through the cooling flow passage while it cools the heat generated in a stirring space of the stirring vessel
Implementation Method 2
cooling water flows through the vessel cooling space and the cooling rods, thereby the stirring object exchanges heat with the cooling water
Implementation Method 3
the temperature of the slurry around the stirring rod rapidly increases due to frictions between the stirring rod and the slurry
Data Source
AI summary
A stirring device related to one example of the present invention comprises a stirring vessel including an inner chamber having a stirring space and an outer chamber surrounding the inner chamber, and having a vessel cooling space provided between the inner chamber and the outer chamber, a stirring part including a stirring rod disposed in the stirring space and provided to stir a stirring object accommodated in the stirring space, a plurality of cooling rods each protruding from the inner chamber of the stirring vessel into the stirring space, and connected to the vessel cooling space to enable fluid movement, and a cooling drive part provided to supply cooling water to the vessel cooling space.