DCF Mechanically Cleaned Filter Systems Self cleaning filtration systems for non-water applications

The DCF-Series was developed for non-water applications where the fluids being filtered were especially challenging, perhaps being viscous, abrasive, or sticky. The advantages of the DCF design is that it will maintain a continuous low differential pressure and minimize product loss during the cleaning cycle. The DCF design provides simple, reliable operation in which a low initial investment is a key driving factor.

How a Mechanically Cleaned Filter Works
Fluid flows into the top of the filter station and down through the center of the filter element, passing through the element walls and exiting the outlet connection. The topside of the element is sealed, thus all of the unfiltered fluid enters the filter element. Whatever particles are too large to pass thorough the element end-up falling to the bottom of the vessel or stuck against the element wall.

A spring loaded cleaning disc travels the length of the element, the frequency of stroking is user programmable, and this pushes any material stuck on the sides of the element downwards to the bottom of the vessel, aptly referred to as the “purge chamber”. The quartered and spring loaded cleaning disc is designed to ensure even and consistent force against the element to maximize cleaning efficiency.
The specially shaped purge chamber ends-up containing concentrated solids and is “flushed” based upon system pressure once the drain valve is opened. The flushing frequency and duration are both user programmable (and can be manual if desired), however the time required for “flushing is usually on a second or two.

The models illustrated above have twin actuators, a design typically reserved for more viscous fluids. Less viscous fluids only require a single actuator.
DCF filter systems for 20 to 1500+ GPM cost from $7,500 to $50,000+ depending upon the filter station body size and automation required. The stroking requires compressed air and the frequency is adjustable by controlling the air flow. Purging can be controlled manually, although typically via a “push button” to control an air actuated purge valve. The automation of this system can include pneumatic or electric timers for both stroke and purge frequency or even a preprogrammed PLC that can network with your control system.

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