Eaton DCF-2000 self cleaning strainer

The Eaton DCF-2000 automatic strainer design differs from the DCF-400, DCF-800 and DCF-1600 designs due to its motor driven cleaning disc design.  Whereas the other designs utilize one or two pneumatically actuated cylinders to propel the cleaning disc throughout the filter housing, the DCF-2000 uses an electric motor with the cleaning disc mounted to a screw style shaft.

The DCF-2000 was originally invented to address difficult coating and slurry applications in the paper making industry, although any viscous fluid or slurry may benefit from the DCF-2000 design.  The pneumatically actuated designs require a seal to prevent fugitive emissions of product along the shaft to which the cleaning disc is mounted because the shaft is continuously plunging into the out of the filter housing.  The DCF-2000 motor driven design eliminates replaces that dynamic seal with a common rotary seal.

The primary operational advantage often DCF-2000 to the DCF-1600 (similar in flow capacity) is that the screw style shaft driven directly by the motor provides more downwards force and therefore enables operation with thicker, more viscous slurries.

The overall function is the same for all DCF style self cleaning filters: the cleaning disc is propelled downward pushing debris on the element surface downwards into the purge chamber.  The cleaning disc design is such that it consists of four spring loaded sections, so as the cleaning disc wears a constant pressure is applied to the element surface.  On the upward stroke of the cleaning disc debris is pushed off the element surface and are propelled down the center of the element through the opening within the cleaning disc.

The purge chamber is emptied when the electrically operated drain valve is opened.  Both the stroke and purge frequencies are programmable using the included Allen-Bradely PLC.  The purge chamber holds 1½ gallons and typically emptied within a few seconds, depending upon fluid viscosity and system pressure, thus the duration of the purging processing is also programmable.

The filter elements are available in 15 to 1125 micron retentions in the wedgewire design and 1/16", ⅛" and ¼" retentions for the perforated design.

 

DCF-2000 Design Specifications:

• Design Operating Pressure: Standard unit pressure is 150 PSIG (10.3 bar), minimum 30 PSIG (2 bar)

• Filter Body Volume: 11 gallons

• Purge Chamber Volume: 1½ gallons

• Element Dimensions: 8” diameter X 24” long – 610 in²

• Electrical Requirements:

  • Control panel: 110 or 220 Volt, 50/60 Hz, 1 phase

  • Motor: 220, 460 or 575 volts, 3 phase, 50/60 Hz

• Air Requirements: 60 PSIG (100 PSIG maximum) at 5 CFM – intermittent, must be clean, dry, and non- lubricated. ¼” NPTI process connection

• Estimated Gross: 564 lbs (CCV/Push button purge)

• Dimensions: 36" x 48" x 90"