Static Dynamic Classifier Nesting for Granular Material
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sifting devices in material comminution processes, such as cement production, require multiple sifting stages and components, leading to a complex and inefficient grinding plant setup.
Innovation Solution
A compact sifting device design incorporating a static sifter partially enclosing a dynamic sifter, with a distributor device feeding material flows of different grain sizes, allowing both streams to be sifted using a single device, thereby eliminating the need for additional sifters and optimizing material flow through multiple inlets and outlets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate sifting devices are used for different material flows, then each material stream can be sifted independently, but the device complexity and space requirements increase
Solution Approach 1:
The patent combines a static sifter and a dynamic sifter into a single integrated device. The static sifter handles coarse material from the first inlet, while the dynamic sifter processes finer material from the second inlet. Both sifters operate simultaneously within one device structure, eliminating the need for separate sifting devices for different material flows and reducing overall system complexity.
Solution Approach 2:
The integrated sifting device performs multiple functions by accommodating both static and dynamic sifting mechanisms. It can process different types of material flows (coarse and fine) through different inlets simultaneously, making a single device universal for handling various grain sizes and material characteristics that would traditionally require separate specialized sifters.
2Ease of manufacture
If a static sifter and dynamic sifter are arranged separately, then each sifter can be optimized independently, but the overall device size and space consumption increase
Solution Approach 1:
The patent arranges the dynamic sifter inside or adjacent to the static sifter in a nested configuration. The static sifter forms an outer structure that partially encloses the dynamic sifter, allowing both sifters to occupy overlapping or adjacent spatial zones. This nesting approach enables independent design and optimization of each sifter component while minimizing the overall device footprint and space consumption.
3Productivity
If multiple inlets are provided for different material flows, then material sorting efficiency improves, but the device complexity increases
Solution Approach 1:
The patent divides the material flow into distinct streams using separate inlets: a first inlet for coarse material and a second inlet for finer material. Each inlet is directly connected to its corresponding sifter (static or dynamic), creating segmented flow paths that prevent mixing. This segmentation allows efficient simultaneous processing of different material types while keeping the flow paths simple and straightforward, avoiding complex routing.
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 enables efficient sifting of granular materials into three grain fractions, reducing the number of components in the grinding plant, enhancing maintenance efficiency and cost-effectiveness by allowing optimal particle sizing for corresponding grinding devices.
Implementation Method 1
The static sifter is supplied with sifting air via a sifting air duct, for example by means of a fan, which air is directed via the plurality of guide vanes of the flow device against the material flow flowing through the static sifter
Implementation Method 2
The distributor device has at least one rotatable disk. The at least one rotatable disk is connected to a drive shaft, for example, and is driven to rotate
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a classifying device (10) for classifying a granular material flow, having a first inlet (14) for letting a first material flow into the classifying device (10), a second inlet (12) for letting a second material flow into the classifying device (10), a static classifier (20), and a dynamic classifier (22), said static classifier (20) being arranged so as to at least partly surround the dynamic classifier (22). The classifying device (10) has a distributing device (42; 52; 54) which is designed to feed the material flow of the first inlet (14) to the static classifier (20) and the material flow of the second inlet (12) to the dynamic classifier (22).