Scraper Chain Conveyor

A scraper chain conveyor is very similar in principle to a drag chain conveyor — both use chains with “flights” or “scrapers” to move bulk material — but scraper chain conveyors are usually designed for shorter distances, steeper inclines, or vertical movement, and for handling sticky or wet materials.

🔹 Key Features

• Continuous Chain with Scrapers (Flights): A chain runs inside a trough or casing; scrapers fixed to the chain push or pull material along.
• Open or Closed Trough: May be enclosed (for dusty or hazardous material) or open (for easy cleaning or monitoring).
• Multiple Configurations: Horizontal, inclined, “Z,” or vertical arrangements.
• Heavy-Duty Design: Wear-resistant chains, sprockets, and liners.

🔹 Applications

• Ash handling beneath boilers.
• Removing sludge or grit from wastewater treatment plants.
• Transporting sticky, hot, or abrasive bulk materials (e.g., coal, clinker, sand).
• Agriculture: silage, wet grains, or feed.
• Mining and cement plants for short-distance transfer.

🔹 Advantages

• Handles sticky, wet, or abrasive materials better than screw conveyors.
• Can run on steep inclines or vertically.
• Robust and long-lasting.
• Enclosed versions keep dust or odor contained.

🔹 Limitations

• Limited conveying length compared to drag chain conveyors.
• Requires good tensioning and lubrication of chains.
• More wear on scrapers when dealing with sharp or gritty material.

✅ In short:
A scraper chain conveyor is ideal for moving sticky, wet, or abrasive bulk solids — especially over short or inclined routes — in industries like power generation (ash), wastewater treatment, agriculture, cement, and mining.