Scraper conveyor: an efficient conveying equipment for block/viscous materials
Aug 15,2025
In the industrial conveying equipment system, scraper conveyors are known for their "strong adaptability", especially adept at handling block, viscous or high-temperature materials, and are the core conveying tools in industries such as mining, steel, and building materials. Its stable conveying performance and flexible adaptability enable it to meet the working conditions of different markets around the world, making it the preferred solution for handling complex material conveying in foreign trade business.
1、 Core structure and working principle
The scraper conveyor is mainly composed of a scraper chain (core executing component), a machine groove (material carrying channel), a driving device (power source), and a tensioning device (ensuring chain tension), with a simple and efficient working logic:
1. The driving device drives the scraper chain to circulate in the enclosed machine slot;
2. The scraper (fixed on the chain) pushes the material to move along the inner wall of the machine slot, achieving continuous conveying in horizontal, inclined (≤ 30 °) or vertical directions;
3. The tensioning device adjusts the tension of the chain in real time to avoid slipping or jamming, ensuring stable transportation.
Key design highlights: The machine slot adopts a fully enclosed structure, which can prevent dust leakage; The gap between the scraper and the machine slot is ≤ 5mm, reducing material residue and suitable for scenarios such as food and chemical industries that require cleanliness.
2、 Core advantage: A "conveying tool" that adapts to complex materials
1. Strong material adaptability: It can transport block materials such as ore, coal, cement clinker, etc., as well as handle viscous materials such as sludge and wet coal powder, solving the pain point of easy blockage of screw conveyors. It is widely used in Australian mines and Southeast Asian cement plants.
2. Excellent sealing performance: Fully enclosed machine slot+flange sealing design, dust emission ≤ 5mg/m ³, in line with the EU Industrial Emission Directive (IED) and the US EPA's unorganized emission requirements, especially suitable for high dust steel plants and coking plants.
3. Strong overload capacity: The scraper chain is made of high-strength alloy steel, with a tensile strength of ≥ 800MPa after heat treatment, and can withstand 1.2 times the rated load. Under high load conditions in heavy metal mines in Africa, the failure rate is 40% lower than that of ordinary conveyors.
4. Flexible layout: The machine slot can be customized into straight, curved, or multi segment combinations, which can fit the narrow space or complex terrain of the workshop and adapt to the compact layout of European precision factories.
3、 Key points for adapting to the foreign trade market
1. Material customization:
Normal temperature drying condition: Q235 carbon steel is selected;
High temperature/corrosion conditions: 304/316L stainless steel or heat-resistant alloy is used.
2. Standard compliance:
Export to the EU requires CE certification (EN 12100 Mechanical Safety Standard);
The North American market must comply with the ASME B20.1 Safety Code for Conveyor Equipment;
The Russian and Central Asian markets require GOST certification documents to ensure smooth customs clearance.
Scraper conveyors have become the core equipment for handling complex materials due to their ability to handle tough materials. For foreign trade customers, choosing scraper conveyors that are suitable for local working conditions and meet international standards can not only improve production efficiency, but also avoid equipment idle due to material adaptation issues. It is a reliable choice to connect the global supply chain transportation links.
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