In modern breweries, efficient handling of raw materials and by-products is crucial—not only for productivity, but also for hygiene and sustainability. Among various material handling systems, scraper conveyors (also known as drag conveyors or chain conveyors) offer an often-overlooked yet highly effective solution. Designed to move bulk materials along an enclosed trough using scrapers attached to a chain, these conveyors are durable, versatile, and low-maintenance.
What is a scraper conveyor?
A scraper conveyor consists of the following components:
A trough or channel—an enclosed path that guides the material.
A continuous chain loop—equipped with scrapers (flights) that move the material.
A drive system—an electric device that powers the chain.
A return path—ensures the chain’s continuous circulation.
A scraper conveyor features a trough or channel and a continuous chain loop with scrapers. As the chain moves, the scrapers drag or push the bulk material (from grain to abrasive, sticky substances) efficiently and cleanly.
Advantages of Scraper Conveyors in Breweries
1. Contamination Control and Cleanliness
Due to their enclosed design, scraper conveyors minimize dust, spillage, and airborne particulates.
2. Durability and Low Maintenance
Scraper conveyors are rugged and durable, capable of handling abrasive malt or heavy grains without rapid wear. Their simple design also reduces maintenance costs compared to more complex pneumatic or belt conveyors.
3. Flexible Layout
Scraper conveyors can be installed horizontally, inclined, or even vertically to accommodate brewery floor space constraints. This flexibility allows brewers to efficiently transport raw materials from storage silos to the grinding or mashing area.
4. Built-in Self-Cleaning
The scraper blades naturally clean the trough as they move, preventing material buildup. This reduces downtime for manual cleaning and ensures smoother operation.
Why Breweries Should Consider Scraper Conveyors
While screw conveyors and tubular scraper conveying systems are more common, scraper conveyors offer a compromise:
Cleaner and more enclosed than screw conveyors
Simpler and more robust than tubular scraper conveyors
Effective and cost-effective installation and long-term maintenance
For breweries committed to optimizing hygiene, efficiency, and sustainability, scraper conveyors are a reliable material handling solution worth considering.
