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Automatic Self Cleaning Filter Housing

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DFX Series Backwashing Automatic Filter Housing System With 24-Hour Continuous Operation

DFX Series Backwashing Automatic Filter Housing System With 24-Hour Continuous Operation


Full automatic filter housing system”

Full automatic outside scraper filter housing DFX series;

DFX series self-cleaning filter housing (DFX filter for short) is of sffiltech’s independent research and development of efficient scraper type self-cleaning filter. By using mechanical scraping to automatically cleaning particle impurity of outer surface of filter element to ensure continuous on-line filtration.

DFX filter housing is mainly used for high precision filter, precision range 50-500 microns. It’s able to the maximum extent to avoid crushing the impurities, thus efficiently removing all of more impurities, suitable for high viscosity liquid filtration. Viscosity up to 800000 CPS.

DFX filter follows the sffiltech’s high performance, high quality, high reliability design and manufacturing standards are of the international first-class quality. sffiltech is one of the world's leading manufacturer of self-cleaning filter . It has a full series of scraper type self-cleaning filter products, three sub series, applicable to different occasions, to fully meet the industrial customer’s variety of mechanical self-cleaning filtration requirements.

Working principle of DFX filter housing

Liquid inflow from filter inlet and from the filter element of outer surface flows past the filter element lower end connection outlet. Liquid outflow from the outlet .When the surface of the filter element is blocked to a certain amount of impurities, to perform the cleaning procedure at definite time or by setting the pressure difference. Gear motor drive slicker to erase impurities of outer surface of the filter element, impurities along the scraper leave the surface of the filter element. With the downward liquid falling to the bottom of the filter, the rotating sweep board sweeps the bottom impurity into the dirt collecting chamber. Impurities accumulate in collecting cavity and bottom of the filter, sewage valve timing automatically open, the liquid with high concentration of impurities is discharged from the discharge port. Residual liquid can be recovered or directly discharged.

V-SLOT high performance precision filter element

X series DF filter housing is equipped with one of the world's highest quality V-SLOT gap type precision filter elements, has the following prominent advantages:

1) Precision range 50-500 microns;

2) Surface seam width precision, deviation is less than 5 microns.

3) Main Body 316L material, excellent corrosion resistance.

4) V type slot, which is not easy to block by the impurities, stable long-term flow.

5) Outer surface and internal surface are smooth, easy to scrape off, minimum wear of scraper.

6) Can filter stubborn impurities, such as mud and soft agglomerate.

7) The surface is treated with special hardening and wear resistance, and the service life is prolonged remarkably

8) High strength structure, if the differential pressure rises the gap keep not deformed

9) Tolerance to high intensity front and back side pressure shock.

Technical features and advantages

1) Full automatic operation, 24 hours of continuous online filtering, ends heavy filter element replacement and cleaning work;

2) Low cost of material and high environmental protection with no disposable supplies.

3) Using metal sheet scraper has excellent effect. Impurity removal ability was significantly improved and avoided crushing impurities.

4) Top quality V-SLOT filter element, gap precision, extreme smooth surface, easy to scrape, high strength, long service life.

5) The filter pressure loss is very small, the flow is stable, energy saving, and the conducive to stable techniques.

6) Can be added to the back washing function as auxiliary cleaning filter element.

7) Closed filtration, to prevent the leakage of hazardous materials, to ensure safe procedure.

8) High concentration of waste liquid can be recycled, to avoid the loss of high value materials.

9) A variety of module combination and automatic mode to meet the requirements of various filtration systems.

10) The standard of international famous brand geared motor, high reliability, long service life.

11) Standard feature of having the auxiliary cover lifting device, one person can operate easily.

Volume (L)130 200 330
Inlet and outlet sizeDN50-DN100 DN8O-DN150 DN8O-DN150
Size of drain outletDN50 DN50 DN80
Motor/pneumatic motor drive0.18kw/0.33hp 0.18kw/0.5hp 0.25kw/0.5hp
Suitable for liquidhigh viscosity liquid (<100000 cps) Impurity mass<1000ppm
Filtering precision35-2000 μ m
The standard design pressurerating is 1.0MPa, and higher can be customized
Maximum design temperature0-200'C (depending on seals)
Cleaning differential pressure0.05MPa
Differential pressure transmitter groupDifferential pressure transmitter or pressure transmitter
Inlet and outlet connection standardFlanges HG20592-2009 (standard design) HG20615-2009 (compatible with ANSI B16.5)
Filter element type and materialV-SLOT slotted metal filter element material 316L S30408 S31608
Shell wetted material304/316L/CS
Scraper material304/316L
Shell sealing materialNBR NBR rubber (standard)/VITON (FKM) fluoroelastomer silicone rubber
Filter element sealing materialNBR/EPDM/VITON/silicone rubber/FEP coated silicone rubber
Piston rod sealing materialNBR/PU/VITON
Blowdown and slag discharge valve,Pneumatic ball valve, protection grade IP65
Utility supply requirements380V AC. 0.4-0.6MPa clean dry compressed air
Main model of filterDFX420 DFX500 DFX650
Filter face (nf)0.75 0.88 1.38

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