Self-Cleaning Water Filter Strainer

At ClearCleanWater we have developed a low cost, automatic self-cleaning water filter strainer for use in commercial and industrial applications. Applications include selfcleaning filters for after-coolers, heat exchangers, pump seal water, drip irrigation, cooling towers, quench towers, boiler feed water, spray nozzles, process make up water, raw water supplies, factory water, mill water, acid water recycle, caustic water recycle, slurry concentration, plating tank sludge removal and many others.

FILTER DESIGN RANGE

• Filtration range 2 to 400 micron
  
• Flow from 5 to 2000 gpm
  
• Operating Pressure 20 to 100 psig
  
• Temperature 35 to 100 Degrees Fahrenheit
  
• Materials of Construction Available: PVC, Carbon Steel, Stainless Steel, and Exotic alloys
  
• >1% water consumption during back wash cycle
  
• Utility requirements 95-120 VAC, 50-120 psig -40 C Dew point air

SELF-CLEANING FILTER OPERATION
Dirty water enters the self-cleaning filter inlet and is directed to the inside of a group of specially designed semi-permanent porous filtration elements. The water passes through the filters elements and out of the self-cleaning filter as Clear Clean Water. Any particulate larger than the filters element pore rating is left trapped inside the filter element. The self-cleaning filter elements are then periodically cleaned when a preset time or differential pressure is reached. When the self-cleaning cycle is initiated, a series of air operated valves are automatically activated redirecting a portion of the clean water stream back through the porous filter elements in a reverse flow. The reverse flow flushes the accumulated debris to the back-flush drain and cleans the element. The cycle is repeated until all elements in the automatic filter are cleaned and the operating cycle begins again. Less than 1% of the total filter flow is used in the back wash cycle.

Brunswick Research, 398 Bald Mountain Road , Troy, NY 12180. Tel: 518-279-0027; Fax: 518-279-0195.