Rotating Bucket Segments for Radioactive Bulk Sorting
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Solution Overview
Problem
Existing bulk material sorting methods fail to prevent contamination of non-contaminated materials by radioactive or toxic substances, leading to inefficient disposal and increased storage costs due to accidental mixing during the sorting process, especially when dust and impurities interfere.
Innovation Solution
A sorting arrangement featuring a continuously running conveyor device with rotatably mounted bucket segments, a deflector, and a control unit that directs bulk material into separate containers based on measurements from a radiation detector, ensuring accurate separation by rotating the bucket segments and activating the drive unit to prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conveyor device is used to transport bulk material past a radiation detector for sorting, then the sorting process can be automated and continuous, but there is a risk that dust and impurities will cause contamination of non-contaminated bulk material with radioactive material
Solution Approach 1:
The conveyor belt is divided into multiple independent bucket segments that can be individually controlled. Each bucket segment acts as an isolated container, preventing cross-contamination between different materials. The segmentation allows the system to handle contaminated and non-contaminated materials separately while maintaining continuous operation.
Solution Approach 2:
A deflector is introduced as an intermediary component between the bucket segments and the containers. The deflector with its sloping walls guides the bulk material from the bucket segments into the appropriate containers while preventing dust and impurities from escaping and contaminating other materials. It acts as a physical barrier and directional guide.
2Productivity
If bulk material is conveyed continuously through the sorting system, then productivity is maintained, but contamination can occur during transmission through dust and impurities
Solution Approach 1:
The bucket segments function as enclosed containers with open tops that can be selectively covered or sealed. This flexible enclosure design allows the system to maintain continuous operation while preventing dust and impurities from escaping during material handling. The enclosed structure contains contaminants within each segment until controlled discharge.
Solution Approach 2:
The harmful dust and impurities are extracted from the bulk material stream by separating them into designated contaminated material containers. The sorting system identifies and extracts radioactive or contaminated portions, removing them from the non-contaminated material flow, thereby preventing further contamination spread.
3Quantity of substance
If non-contaminated bulk material is mixed with contaminated bulk material, then disposal costs increase and storage requirements increase, but preventing this mixing requires complex sorting mechanisms
Solution Approach 1:
The bucket segments are rotatably mounted and can be dynamically rotated to change their discharge direction. This dynamic capability allows the same sorting mechanism to direct different bucket segments to different containers based on real-time detection results. The drive unit rotates the segments by a specific arc to achieve precise directional control without complex mechanical structures.
Solution Approach 2:
The radiation detector provides real-time feedback about the radioactivity level of bulk material in each bucket segment. The control unit processes this feedback information and automatically controls the rotation of the drive unit to direct contaminated and non-contaminated materials to appropriate containers. This closed-loop feedback system ensures accurate sorting while minimizing mixing.
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
Effectively separates contaminated and non-contaminated bulk materials, minimizing the risk of contamination and optimizing storage by ensuring that non-contaminated materials are deposited in one container and contaminated materials in another, thereby reducing disposal and storage costs.
Implementation Method 1
a measuring device which is directed towards a measuring area of the conveying device and which detects when bulk material with the specified property, in particular radioactive bulk material, is present in the measuring area
Data Source
Figure 1
Figure 2~4
Figure 3
AI summary
The invention relates to an arrangement for sorting dry bulk material that contains a contaminated portion. The arrangement comprises a conveying device (21), in particular a continuously running one, for conveying the bulk material (1), a selector (22) with a number of at least three, in particular three, rotatably mounted cup segments (222a, 222b, 222c), wherein one of the cup segments (222a) is arranged below the end of the conveying device (21) such that the bulk material (1) falling from the conveying device (21) falls into this cup segment (222a), a roof-shaped deflector (23) whose inclined walls (231, 232) converging at one edge each seal the edge (233) with the wall (221a) opposite the cup segment (222a) into which the bulk material (1) is conveyed, and two containers (24, 25) arranged on each side of the edge (223) and which are formed by the wall (221 a),which are separated from each other and into which the bulk material (1) enters via one of the deflectors (231, 232), a measuring device (26) which is directed towards a measuring area (261) of the conveying device (21) and which detects when bulk material with the specified property, in particular radioactive bulk material (12), is located in the measuring area (261), a drive unit (27) for rotating the rotatably mounted cup segments (222a, 222b, 222c) by one arc segment, in particular 120°, so that, depending on the direction of rotation, the contents of the cup segment (222a) into which the bulk material (1) has so far been conveyed either enter one container (24) or the other container (25), and bulk material (1) is henceforth conveyed into another cup segment (222b, 222c), and a control unit (28) that activates the drive unit (27) to rotate,the direction of rotation depends on the measurement result of the measuring device (26).