Buried Scraper Conveyor: An Overview A buried scraper conveyor is a highly efficient and enclosed material handling system designed for transporting bulk materials horizontally or at slight inclinations. It is widely used in industries such as mining, agriculture, food processing, and chemical production due to its ability to handle dusty, granular, or powdery materials with minimal spillage and environmental contamination. Structure and Working Principle The conveyor consists of a trough-shaped casing that houses a chain-driven scraper assembly. The scrapers, attached to the chain at regular intervals, move along the bottom of the trough, pushing the material forward. The entire system is buried or enclosed, preventing material exposure to external conditions and reducing dust emissions. Key components include: 1. Trough: A U-shaped or rectangular enclosure that contains the material being conveyed. 2. Scraper Chain: A durable chain with attached flights (scrapers) that drag the material through the trough. 3. Drive Unit: Typically an electric motor with a gear reducer to power the chain movement. 4. Inlet and Outlet: Openings for loading and unloading materials. 5. Support Structure: Reinforced frames to ensure stability during operation. Advantages - Dust-Free Operation: The enclosed design minimizes dust release, making it suitable for sensitive environments. - Low Maintenance: The robust construction reduces wear and tear, lowering downtime. - Versatility: Capable of handling a wide range of materials, including grains, coal, cement, and chemicals. - Space Efficiency: The buried design saves floor space compared to open conveyors. - Gentle Handling: Suitable for fragile materials that could be damaged by high-impact conveying methods. Applications Buried scraper conveyors are commonly used in: - Grain Silos: Transporting wheat, corn, and other agricultural products. - Coal Handling: Moving coal in power plants or mining operations. - Cement Plants: Conveying raw materials like limestone and clinker. - Chemical Processing: Handling powders and granules without contamination. Considerations - Material Characteristics: The conveyor must be selected based on material abrasiveness, moisture content, and flowability. - Installation Depth: Proper trenching is required to ensure smooth operation. - Power Requirements: Larger conveyors may need higher motor capacity. Conclusion The buried scraper conveyor is a reliable, enclosed solution for bulk material transport, offering efficiency, cleanliness, and durability. Its adaptability across industries makes it a preferred choice for handling materials in a controlled and environmentally friendly manner.