The Canterbury Irrigation Filter

Simple Diagram

How it works

  1. Raw water enters the inlet of the filter to the inner side of the Screen Element collecting suspended solids and forming a filter cake.

  2. As the filter cake grows thicker, it causes a pressure drop between the inside and outside of the Screen Element. When reaching a 7 psi differential , the Rinse Controller (not shown) will trigger a cleaning cycle.

  3. The Rinse Valve opens creating a vacuum force at the Dirt Collector Nozzles which suck the filter cake off the Screen Element and into the Rinse Chamber where it is discharged through the Rinse Valve.

  4. Water passing through the Dirt Collector to the Hydraulic Motor causes the entire assembly to rotate.

  5. As the Dirt Collector assembly rotates, the Piston strokes in an upward direction at the same time, causing the rotating Dirt Collector Nozzles to cover the entire inside of the Filter Element.

  6. The cleaning cycle lasts for 8-16 seconds without interruption of flow through the filter.