Particle Drying System with Rotary Dispenser and Blast Fan
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Solution Overview
Problem
Existing drying systems for particle-based polymers face challenges in uniform particle dispersion and heat flow distribution across the width of a transfer conveyor, leading to uneven drying and difficulties in controlling physical properties of the product.
Innovation Solution
A drying system comprising a transfer conveyor with a rotary particle dispersing device and a heating part that includes a heat exchanger and a blast fan, where the air is distributed across the width of the conveyor, and a control system to manage the particle supply and conveyor operation for uniform particle distribution and heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional particle supply part is used to spread particles on the transfer conveyor, then particles can be supplied to the conveyor, but particles are unevenly accumulated across the width direction due to varying repetition times at different positions
Solution Approach 1:
The particle supply part is designed to rotate in reverse directions alternately, dynamically adjusting its movement pattern. This dynamic operation allows the supply part to compensate for the varying repetition times at different positions along the conveyor width, achieving uniform particle distribution by adapting its motion to the conveyor's movement characteristics
Solution Approach 2:
The particle supply part performs periodic rotational movements in alternating directions. This periodic action with reverse rotation creates a rhythm that synchronizes with the conveyor's movement, ensuring particles are supplied uniformly across all positions along the width direction despite the conveyor's continuous motion
2Area of stationary object
If a heat exchanger is installed to dry particles, then heat transfer area is increased, but pressure difference before/after the heat exchanger causes decrease in hot air flow rate
Solution Approach 1:
A blast fan is introduced as an intermediary device between the heat exchanger and the transfer conveyor. The blast fan acts as a mediator that overcomes the pressure difference created by the heat exchanger, actively pushing hot air through the heat exchanger and delivering it uniformly to the conveyor, thus maintaining high flow rate while utilizing the extended heat transfer area
3Productivity
If the transfer conveyor moves continuously, then particles are transported efficiently, but particles cannot be uniformly dispersed due to varying spray intervals at different positions
Solution Approach 1:
The particle supply part implements dynamic reverse rotation to compensate for the conveyor's continuous movement. By alternating the rotation direction, the supply part creates variable spray intervals that actually achieve uniform particle distribution across the width direction while maintaining the conveyor's continuous operation and high throughput
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 system achieves uniform particle dispersion and heat flow distribution across the width of the transfer conveyor, enhancing drying efficiency and maintaining product quality by ensuring a wide heat transfer area and consistent particle loading.
Implementation Method 1
a heating part for drying the particles on the transfer conveyor in a transfer process, wherein the heating part comprises a heat exchanger and a blast fan
Implementation Method 2
air discharged from the blast fan is supplied to the transfer conveyor after passing through the heat exchanger
Implementation Method 3
a particle dispersing device including a rotary member provided at one side of the transfer conveyor and having a rotation center, a drive part for rotating the rotary member
Data Source
AI summary
The present invention relates to a drying system, and according to one aspect of the present invention, there is provided a drying system comprising a transfer conveyor for transporting particles, a particle dispersing device including a rotary member provided at one side of the transfer conveyor and having a rotation center, a drive part for rotating the rotary member and a particle supply part mounted on the rotary member having particles stored therein, and a heating part for drying the particles on the transfer conveyor in a transfer process, wherein the heating part comprises a heat exchanger and a blast fan, and is provided such that air discharged from the blast fan is supplied to the transfer conveyor after passing through the heat exchanger.