Metal Powder Drying Apparatus with Segmented Heating Plates
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Solution Overview
Problem
Conventional metal powder drying apparatuses face challenges in maintaining constant temperature, achieving high temperatures above 200°C, space efficiency, and operational convenience due to steam or hot oil pipe heating systems, which are cumbersome and prone to breakdowns, especially when drying single crystals and small particles.
Innovation Solution
A metal powder drying apparatus utilizing a plurality of plates with integrated heaters and temperature sensors, where the plates are strategically positioned around a hemispherical drying furnace to control temperature uniformly, reducing drying time and eliminating the need for bulky boiler and piping equipment, and using a single motor for improved operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If steam pipe or hot oil pipe heating system is used, then heating function is provided, but temperature control precision deteriorates and heating time increases
Solution Approach 1:
The heating system is segmented into multiple independent heating plates (first heating plate, second heating plate, third heating plate) distributed at different positions (bottom center, bottom outer side, side surface). Each plate can be independently controlled by the control unit, enabling precise temperature control at different locations and reducing overall heating time through parallel heating operations.
Solution Approach 2:
The conventional mechanical steam pipe or hot oil pipe heating system is replaced with an electrical heating plate system. Each heating plate contains a heater that directly generates heat through electrical resistance, eliminating the need for complex steam generation and fluid circulation mechanisms, thereby improving temperature control precision and reducing heating time.
2Temperature
If steam pipe or hot oil pipe heating system is used, then heating function is provided, but device complexity increases
Solution Approach 1:
The complex boiler and piping equipment is extracted and removed from the system. Instead of using a centralized steam generation system with extensive piping, the heating function is distributed to multiple independent heating plates that can be directly mounted on the drying furnace, significantly simplifying the overall device structure.
Solution Approach 2:
Each heating plate is a self-contained unit with integrated heater and temperature sensor that can independently regulate its own heating output. The control unit coordinates these self-service modules, eliminating the need for complex centralized control systems required by traditional steam or hot oil piping systems.
3Speed
If two motors with air clutch are used for driving unit, then speed variation is achieved, but reliability deteriorates
Solution Approach 1:
Two separate motors with air clutch mechanism are merged into a single motor system. The single motor achieves variable speed operation through a speed controller that adjusts the motor's rotation speed based on feedback from rotation speed sensors, eliminating the complex dual-motor synchronization and air clutch mechanisms that caused reliability issues.
Solution Approach 2:
The driving unit incorporates rotation speed sensors that continuously monitor the actual rotation speed and provide feedback to the control unit. The speed controller adjusts the motor output based on this feedback to maintain the desired rotation speed, achieving reliable speed control without the need for complex mechanical clutch systems.
4Temperature
If boiler and piping equipment are installed, then heating function is provided, but space occupied increases
Solution Approach 1:
The heating system transitions from a three-dimensional volumetric occupation (boiler room, piping networks) to a surface-mounted configuration. The heating plates are distributed and mounted directly on the drying furnace surface, utilizing the furnace's external surface area rather than occupying separate volumetric space, thereby reducing the overall space requirement.
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
This solution allows for quicker and more uniform heating to 200-350°C, reduces the risk of fire, and simplifies maintenance by eliminating complex piping, while enhancing operational convenience and reducing drying time.
Implementation Method 1
a heater provided inside the plate to receive power and generating heat
Implementation Method 2
a temperature sensor provided inside the plate to measure a temperature of the plate and transmitting a measured value to the control unit
Implementation Method 3
a stirring unit installed in the drying furnace and stirring the raw metal powder input into the drying furnace
Implementation Method 4
removing moisture in metal powders with low temperature steam and a hot boiler
Data Source
AI summary
A metal powder drying apparatus using a plurality of plates including a heater includes: a drying furnace having raw metal powder used in the manufacturing of the secondary battery input into one side thereof and having an upper portion in a hemispherical dome structure; a heating unit including the plurality of plates and provided on one side of the drying furnace to heat the drying furnace; a raw material input unit connected to the upper portion of the drying furnace and inputting the raw metal powder into the drying furnace; a stirring unit installed in the drying furnace and stirring the raw metal powder input into the drying furnace; a driving unit installed on an upper portion of the metal powder drying apparatus and providing a speed to the stirring unit; and a control unit controlling the heating unit, the stirring unit, and the driving unit.