Automatic self-cleaning disc filters

Automatic self-cleaning disc filters

  • Thin color-coded polypropylene discs are diagonally grooved on both sides to a specific micron size.A series of these discs are then stacked and compressed on a specially designed spine.
  • When stacked, the groove on top runs opposite to the groove below, creating a filtration element with a statistically significant series of groove and shoulder, which trap the solids.
  • The stack is enclosed in a corrosion proof and pressure resistant housing.
  • During the filtration process, the filtration discs are tightly compressed together by the spring’s power and the differential pressure, thus providing high filtration efficiency.
  • Filtration occurs while water is percolates from the outer diameter to the inner diameter of the element.
  • Depending on the micron rating, there are from 18 (in 400 micron discs) to 32 (in 20 micron discs) stopping points in each track, thus creating the unique in-depth filtration.

The advantages of disc filter:

  • Super-speed and back washing
  • Stable filtration efficiency with different precision: 20um, 40um, 55um,100um, 130um, 200um, 400um
  • Technical characteristics of accurate filtering and continuous filtration
  • Easy operation and assembling, low cost of maintenance

The materials of the filter:

  • Filter shell: Reinforced nylon, PP, stainless steel, carbon steel
  • Filter element: Nylon, PP
  • Filter disc: Nylon, PP
  • Flush valve: Reinforced nylon
  • Solenoid valve: Brass
  • Exhaust valve: Reinforced nylon
  • Piping system: Carbon steel
  • Control line and connector: PP

Color code and accuracy of discs:
Discs color code

 

 

 

 

Filtration process:

  • The discs are compressed together by both the spring and the pressure difference on the tightening cap, forming a sturdy filter element preventing solids breakthrough.
  • Inlet water flows into the filter through the filter element.
  • The suspended solids in the water are trapped on and between the discs.

Backwashing process:

  • A command from the control unit to the filter’s inlet valve causes the value to close the filter’ inlet and open the drain.
  • Filtered outlet water enters from the opposite direction through the outlet port of the filter.
  • The flaps of the membrane are opened by the water pressure, allowing the water to flow only into the 3 flushing pipes.
  • The water is forced through nozzles built into the flushing pipes.
  • Water from the flushing pipes also flows into the piston and pushed the tightening cap up, decompressing the filtration element discs.
  • Tangential jets of water cause fast spinning of the separated discs and remove the trapped solids.The solids are flushed from the filter to the drain.

disc filters process

Models:

2″ automatic self-cleaning disc filter 3″ automatic self-cleaning disc filter
disc filter 2 disc filter 3
4″ automatic self-cleaning disc filter –
disc filter 4