Multi-Module Counterflow Drying Apparatus with Movable Paddles

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Solution Overview

Problem

Existing drying technologies, such as rotary dryers and belt dryers, are costly, difficult to maintain, and inefficient, often resulting in suboptimal drying outcomes due to limitations in heat distribution and material movement.

Innovation Solution

A multi-module counterflow drying apparatus with interchangeable modules and movable paddles, where heat travels opposite to the material, ensuring thorough exposure and efficient mixing, and allowing for adjustable temperature and module configuration to optimize drying.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional drying devices (rotary dryer, belt dryer) are used, then drying function is provided, but manufacturing cost is high and maintenance difficulty increases

Engineering Contradiction:
Improvedrying functionVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The drying apparatus is divided into multiple independent modules that can be stacked vertically. Each module contains its own drying chamber and heating elements, allowing the system to be manufactured using simpler, standardized components rather than complex integrated structures. This modular segmentation reduces manufacturing cost while maintaining reliable drying function.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The modular design creates universal components that can be used in various configurations and applications. The standardized modules can serve multiple drying needs and be adapted to different material types, reducing the need for custom-built expensive equipment while ensuring reliable drying performance.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If conventional drying devices are used, then drying function is provided, but maintenance and repair difficulty increases

Engineering Contradiction:
Improvedrying functionVSAvoidmaintenance difficulty
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

By segmenting the drying apparatus into modular units, maintenance personnel can access and repair individual modules independently without shutting down the entire system. This segmentation enables easier maintenance and repair compared to conventional integrated dryers where accessing internal components requires complete system disassembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The modular design allows individual drying modules to be easily extracted from the stack for maintenance or replacement. This extraction capability significantly reduces maintenance difficulty compared to conventional dryers where components are fixed and require complex disassembly procedures.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If conventional drying devices are used, then drying function is provided, but drying efficiency is suboptimal due to poor heat distribution

Engineering Contradiction:
Improvedrying functionVSAvoiddrying efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

Each modular drying chamber is equipped with its own heating elements and air circulation system, ensuring uniform heat distribution throughout the material bed in each module. This local quality control prevents the heat distribution problems found in conventional large-scale dryers where heat uniformity deteriorates with size.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The vertical stacking of multiple modular chambers creates a three-dimensional drying configuration that improves heat distribution efficiency. Material can be processed through multiple heating zones in sequence, enhancing drying efficiency compared to conventional two-dimensional horizontal drying systems.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

4Reliability

If conventional drying devices are used, then drying function is provided, but material pelletization occurs reducing drying quality

Engineering Contradiction:
Improvedrying functionVSAvoiddrying quality
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The system incorporates movable paddles within each module that dynamically agitate and redistribute the material during the drying process. This dynamic movement prevents material from settling and forming pellets, ensuring uniform drying quality and maintaining material integrity throughout the drying cycle.

Inventive Principle:
Principle #15Dynamics

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 apparatus provides efficient and cost-effective drying by ensuring uniform heat distribution and material exposure, preventing pelletization, and facilitating easy maintenance through modular design.

Implementation Method 1

a heat inlet for inputting heat to the apparatus such that the heat traverses the apparatus in the opposite direction than the material

Methodology Applied
Scientific EffectCounterflow heat exchange: Heat Exchanger

Implementation Method 2

each module comprises movable paddles configured to discontinuously move the material forward in the module

Methodology Applied
Scientific EffectMechanical agitation: Stirring

Implementation Method 3

the material is configured to move in the apparatus from one module to another

Methodology Applied
Scientific EffectGravitational flow: Gravitation

Data Source

PatentUS10006710B2Drying of material
Publication Date: 2018.06.26 SFTEC OY
  • US10006710B2 patent drawing
  • US10006710B2 patent drawing
  • US10006710B2 patent drawing

AI summary

There is provided a multi-module counterflow drying apparatus (100) for drying material, the apparatus (100) comprising: a material inlet (102); a material outlet (104); a heat inlet (108) for inputting heat to the apparatus such that the heat traverses the apparatus in the opposite direction than the material; and a plurality of mutually interchangeable modules (110) stacked on top of each other, wherein the material is configured to move in the apparatus from one module to another such that the movement direction of the material in a given module is opposite to the movement direction of the material in a module above or below, wherein each module (110) comprises: movable paddles (210) configured to discontinuously move the material forward in the module (110).