Integral Mechanical Systems

8021 Lawler Ave.
Burbank, IL  60459

Phone:  708.357.3068
Fax:  708.499.4631

Typical Hopper-Bin Problems



Bridging occurs when material clings to the wall or compacts above the discharge opening of the lower part in the hopper. The flow of material in the upper part of the hopper is interrupted.


Rat-holing occurs when material flows only above the discharge and forms a tube that leaves the hopper filled with dead material which will not flow.


Arching occurs when material in the lower part of the hopper flows out from the discharge opening, and an arch strong enough to support the entire head load in the hopper is formed.


Clinging material and material easily influenced by moisture and temperature adhere to the wall of the hopper and refuse to flow.