Cement Grinding Media Sorter Using Rotating Cylindrical Apertures
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Solution Overview
Problem
Existing cement grinding media sorters face challenges in accurately sorting non-spherical grinding balls and efficiently separating scrap and dust, leading to lower precision and interference in the sorting process.
Innovation Solution
A cement grinding media sorter with cylindrical surfaces and apertures that rotate on their longitudinal axis, featuring a size threshold separator and non-spherical media separator, allowing for precise separation of grinding media by size and removal of debris, with circular apertures facilitating accurate separation and offset apertures enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If longitudinal slots and protrusions are used for sorting, then the sorting operation can be performed, but the sorting precision deteriorates due to misclassification of non-spherical grinding balls
Solution Approach 1:
The patent replaces longitudinal slots with circular apertures in a cylindrical surface. The circular geometry of the apertures matches the spherical shape of grinding balls, allowing accurate size-based sorting without misclassification. A grinding ball is sorted by its ability to pass through circular apertures of specific diameters, ensuring that non-spherical balls cannot be misclassified based on their orientation.
2Productivity
If non-spherical elements are present in the sorting media, then the sorting operation can proceed, but the sorting precision deteriorates due to interference with the sorting process
Solution Approach 1:
The patent introduces a preliminary separation stage before the main sorting operation. A cylindrical screen with apertures removes dust and small spherical particles from the grinding media load before the balls enter the sorting cylinders. This preliminary action ensures that only intact grinding balls proceed to the sorting stage, eliminating interference from degraded materials.
3Measurement precision
If multiple sorting stages are used to improve precision, then the sorting precision improves, but the device complexity increases
Solution Approach 1:
The patent employs identical cylindrical sorting surfaces with circular apertures for multiple sorting stages. Each cylinder performs the same basic function of size-based separation, but with different aperture diameters configured to sort specific size ranges. This standardized, modular approach achieves high sorting precision while maintaining relatively simple device construction and ease of maintenance.
Data Source
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AI summary
A cement grinding media sorter and its operating method, wherein the grinding media are alloy steel balls. The operating method comprises loading the grinding media; separating the scrap and dust; separating non-spherical or asymmetrical elements; separating the grinding media whether above or below a predetermined size threshold; sorting both the larger and smaller-size grinding media by size ranges. The sorter comprises: a cylindrical surface (6, 7) that rotates on its longitudinal axis and is opened at its two circular faces; the inlet (84) for the grinding media and the outlet (85) for the grinding media; a motor, coupled to the cylindrical surface (6, 7) for its rotational movement; the cylindrical surface (6, 7) has consecutive cylindrical segments (a-d), and each segment (a-d) has a plurality of apertures (81), wherein the apertures (81) of each segment are larger than the largest aperture (81) of the previous segment along the inlet-outlet direction.