All articlessilo flow
What Is Arching in Silos?
Arching is closely related to bridging and occurs when material cohesive strength is sufficient to form a stable arch bearing the weight of all material above.
— What Does Arching Mean?
Arching is the formation of an arch-shaped structure across the outlet. The arch is self-supporting and nothing passes through. Particularly common in conical hoppers. Can be mechanical (large particles physically block) or cohesive (fine materials held together by cohesive forces).
— Why Arching Occurs
Cohesive strength between particles is the primary driving force. Consolidation pressure affects arch strength. Hopper half-angle determines pressure profile. Wall friction affects pressure distribution.
— Consequences of Arching
Complete production stoppage. Safety incidents from manual intervention. Unpredictable flow when the arch breaks — the entire material column can drop and overload the discharge system. Lost raw materials and production.
— Limitations of Common Methods
Increased outlet diameter is correct but requires expensive rebuilding. Air cannons break up temporarily but arch reforms. Vibrators are rarely powerful enough for high cohesion. Smoother walls reduce friction but not cohesion.
— Mechanical Solution to Arching
BinWhip technology breaks up established arches without personnel needing to enter the silo. The tool breaks down material systematically for controlled discharge. By removing deposits from walls and cone area, conditions promoting arch formation are reduced.
— Contact Us About Arching
Experiencing arching in your silos? Blue Power has the solutions. Contact us for a no-obligation site visit.