Impact Reactor Classifying Device for Dust Separation
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Solution Overview
Problem
Existing impact reactors face challenges in selectively removing pulverulent dust components, particularly from lithium-ion batteries, due to the formation of dust during comminution, which cannot be effectively extracted through conventional extraction openings.
Innovation Solution
The impact reactor incorporates a classifying device attached to the suction opening, which can be a screen or deflection wheel, to separate and remove pulverulent dust by controlling particle size, with optional features like rotating screens, air separators, and baffle plates to enhance separation efficiency and prevent clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional extraction openings are used in the impact reactor, then the structure is simple and easy to manufacture, but pulverulent dust components cannot be selectively removed
Solution Approach 1:
The extraction system is segmented into multiple functional components: a suction opening for dust extraction, a classifying device with adjustable aperture for particle size separation, and a discharge opening for coarse particles. This segmentation enables selective removal of pulverulent dust while maintaining structural organization.
Solution Approach 2:
A classifying device acts as an intermediary component between the comminution chamber and the extraction system. This device mediates the separation process by allowing only particles smaller than a predetermined size to pass through to the suction opening, while blocking larger particles.
2Reliability
If a classifying device is added to the suction opening, then pulverulent dust can be selectively removed, but the device complexity increases
Solution Approach 1:
The classifying device serves multiple functions: it acts as a particle size filter, a flow control element, and a protective barrier for the suction opening. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in overall device complexity while improving dust removal efficiency.
Solution Approach 2:
The classifying device incorporates adjustable parameters such as variable aperture size or rotatable screen elements, allowing dynamic adaptation to different particle size requirements. This dynamic capability enables the same device to handle various comminution tasks without requiring multiple specialized components.
3Productivity
If the suction opening is positioned at the largest possible distance from the rotor, then dust extraction is improved, but the device complexity increases
Solution Approach 1:
The suction opening is positioned on the cover at the end face of the comminution chamber, utilizing the spatial dimension perpendicular to the rotor's rotation plane. This dimensional arrangement maximizes the distance between the suction opening and rotor while maintaining a compact overall structure, improving dust extraction efficiency without proportionally increasing device complexity.
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 configuration allows for the selective removal of pulverulent components, improving the processing of composite materials like lithium-ion batteries by ensuring only fine particles are extracted through the suction opening, while larger particles are handled separately, enhancing the reactor's efficiency and safety.
Implementation Method 1
Coarse particles can be separated off by means of the classifying device arranged in the suction opening in such a way that only pulverulent dust can be removed from the suction opening
Implementation Method 2
the objects are comminuted and separated into individual components by impact stress with high momentum transfer by means of rotating impact elements
Implementation Method 3
a suction opening is assigned to the cover... a dust-containing atmosphere is produced within the impact reactor during the mechanical loading by the rotor
Data Source
AI summary
An impact reactor for comminuting composite materials having a rotor with impact elements is arranged in a cylindrical casing. An end face of the impact reactor, remote from the rotor, is closed by a cover. A suction opening is assigned to the cover and a classifying device is assigned to the suction opening. Such an impact reactor may be used to process, by way of example, accumulator batteries, mineral wool and raw material.