Air Cannon System Information


There are four main problems associated with interruption of free flow of bulk solids in bunkers, hoppers, silos transfer chutes etc., as shown in Figures – 1, 2, 3 & 4 below. Please note these illustrations are for general information only.

CLINGING – Figure 1
Material deposits stick to the sides of hoppers. It reduces free-flow. In addition, it also creates possibility of material breakages from sides of the vessels.

BRIDGING – Figure 2
Blockage at the outlet of the storage silo that creates an air filled “pocket”. This results in complete loss of production. This is a common problem where fine materials are being processed and the moisture content is higher than normal.

RATHOLING – Figure 3
This is an extreme form of clinging resulting in reduced free-flow. In this case it requires regular top ups of small quantities of material. This results in production loss. Vibration equipment as a solution can result in huge lumps of material breaking away and blocking the outlet. Vibrators are limited to metal hoppers, etc only.

ARCHING – Figure 4
Type of bridging that occurs at a high level within a hopper/silo. This condition creates a dangerous situation for operators when trying to clear the blockage. Also, there is a possibility of health/maintenance/damage issue.


  • Determine cause of the problem – by Zoom Automation’s Engineers.
  • Engineer a solution based on Zoom Automation’s experience.
  • Apply our operator friendly solution.

Zoom Automation’s Engineers have full technical backup from management to boardroom level. Each installation team is supervised by a competent member of staff, e.g., Contract Engineer. Operation and Maintenance Instruction Manuals in both – electronic & hard copy are supplied with each Installation. Periodic Service and Maintenance contracts are available with each installation.

Air Canon Components 100 Litre


We trust that the information found herein meets your requirements and approval, and would like to assure you of our full attention at all times.

Please feel free to contact us with any queries or if you require further details.

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Contact us now for an assessment of how Air Canons can solve your clogging problems.

Zoom Automation Information

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