Which mechanical conveyor category excludes scraper-type units ?
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Answer: C. Bucket elevators
Explanation
Bucket elevators lift bulk materials vertically using attached containers. They do not employ scraping blades or troughs to push material. This mechanical design separates them from scraper type conveyors. Scraper conveyors push bulk solids along a flat trough using flights. Bucket elevators scoop material from a boot and hoist it vertically. Conveyor categorization is based on the method of material transport.
Grain elevators use vertical bucket systems to lift seeds efficiently. Industrial plants use drag conveyors for horizontal material transfer. Selecting the right conveyor prevents material degradation and spills. Ribbon conveyors use helical flights to scrape and move materials. Flight conveyors feature vertical plates that push material along troughs. Drag conveyors pull material along a bottom plate using chains.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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