Watertreatment

Automatic Brush Filter

Brush Filter Specifications

Materials

Filter body • Carbon steel coated with baked on epoxy

Screen • 316 Wedgewire or Perf.

Filtration Range • 100 to 4000 micron

Flush Water • 70 liters (18.5 gallons)

Consumption (at min working pressure)

The electric self-cleaning screen filter enables high quality filtering at degrees of 100 to 4000 micron from

different types of fluid sources such as sewage, reservoirs, rivers, lakes, and wells.

Filter Operation

Filtration

Water enters the filter through the “Inlet” (1) and passes through the fine screen (2), which purifies the flow by

separating the smaller particles from the water. As more water flows through, impurities build up on the fine

screen. As impurities on the screen accumulate, a pressure imbalance is built up between the internal section of the fine screen (2) and its external section.

Cleaning Process

When the difference in pressure reaches the preset value on the differential pressure indicator, or the duel time between flushing passed, a series of events is triggered while water continues to flow to the system units. The controller transmits a signal for a 10 second flushing cycle. The flushing valve (4) opens, pressure is released from the inner side of the fine screen (2), the electric motor (5) simultaneously rotates the brushes (3) around its axis. The brushes wipe all of the dirt and effiicently clean the entire internal screen (3) surface.

At the end of the 10 second cycle, the flushing valve (4) closes and the operation of the electric motor (5) is

stopped. The filter is now ready for the next cycle, with clean filtered water flowing through the “Outlet” (6).

The 10 second flushing cycle resumes operation whenver the difference in pressure reaches the preset pressure value set on the differential pressure indicator. If the pressure difference remains unchanged after one cycle, another cycle will start after a delay of 10 seconds.