Mechanical conveyors featuring elements that push material along a stationary trough or tube are known as scrapers. Which of the following is classified as a scraper conveyor?
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Answer: D. Both B. and C.
Explanation
Flight conveyors and screw conveyors utilize mechanical elements to continuously push materials along stationary troughs. Both mechanisms rely on direct physical contact from rotating flights or screws to transport bulk solids. These systems fall under scraper conveyors because they scrape material forward rather than carrying it loosely. Mechanical conveyors are essential industrial equipment used for moving bulk solids horizontally or at slight inclines. Scraper conveyors typically operate inside closed troughs to prevent dust emission during material handling. Screw conveyors use a helical screw blade inside a tube to push powders and granular materials forward efficiently.
These conveyors are widely used in chemical processing plants for moving powdery or abrasive solids safely. Agricultural facilities use them extensively to transport grains from storage bins to processing equipment. Choosing the right conveyor design prevents material degradation and ensures steady production flow rates. Bucket conveyors lift materials vertically using a series of suspended containers rather than pushing them forward. Bucket elevators are designed for vertical elevation and do not function as horizontal scraping elements. Neither bucket systems nor pneumatic transporters utilize a pushing element inside a stationary trough.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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