The powder scraper, also known as the powder material buried scraper conveyor, is a continuous transportation equipment specifically designed for transporting powdery materials. It is a type of buried scraper conveyor and is named so because the materials it transports are mostly in powder form (such as flour, cement, fly ash, etc.).

This equipment operates within a closed rectangular-section casing, using a moving scraper chain to convey the materials. Since the scraper chain is completely buried in the materials during the conveying process, it is called a "buried scraper conveyor". The powder scraper is widely used in industries such as chemical, metallurgy, building materials, grain, food, and power, and is an ideal choice for conveying powdery materials.