Video of a Model Demonstrating Structural Arching in a Hopper.

AJAX Equipment

Milton Works, Mule Street, Bolton, UK, BL2 2AR
Tel: (0)1204 386723      Fax: (0)1204 363706


Structural Arching

Is a Stochastic Phenomenon depending on:

Particle - Size & Size distribution, Shape, Contact Friction

Bin - Orifice Size & Shape, Wall Friction and Slope,

Flow - Rate, Frequency of Starts

Although no size of opening is ‘safe’, the probability of a stoppage falls off rapidly as outlet increases above four times the largest particle dimension.

A minor change in wall angle next to the outlet can reduce the probability of blockage by generating wall slip with an ‘Expanded Flow’ form of Hopper construction.


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