What Is The Working Principle of Automatic Backwash Filter

JX Filtration August 28, 2025 Automatic Backwash Filter

Brief Description of Operation Steps of Automatic Backwash Filter:

Filtration Stage:
The medium flows in from the inlet, passes through the filter element, and impurities are retained while the clarified liquid flows out.

Differential Pressure Monitoring:
When the pressure difference between the inlet and outlet exceeds the preset value (e.g., 0.1–0.2 bar), the filter is considered clogged.

Triggering Backwash:

Nozzles or brushes begin to rotate.
A negative pressure zone is created, drawing impurities from the filter mesh into the cleaning chamber.
The impurities are discharged through the drain port.

Completion of Cleaning:
After typically 10–60 seconds, the cleaning process stops automatically, and the entire system continues to operate without shutdown.