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Automatic back wash filter housing

Automatic back wash filter housing

Automatic back wash filter housing working principle:

FQ automatic back wash filter housing, The filtered liquid flow in the housing, filtered by the filter screens, the impurities are trapped inside the filter screens.

when the impurities become more and more, and the pressure difference between the contaminat side and clean side will be increase. When the pressure difference reaches the set value, the differential pressure gauge will signal, and the filter system will start to back wash the filter screens, and then the clean liquid flow out from the housing, the impurities will be discharged by the drain valve.

Automatic back wash filter housing working process:

1) The gear motor drive the intermediate shaft and the washing arm do rotation together.the positioning switch control the The rotation angle, and let the point is meet with the cleaned filter screens.
2) Opening the drain valve, and there will be pressure difference between the drain outlet and clean side(outside the filter screens).

3) Because of the pressure difference, the liquid in the clean side will flow to the filter screens inside from the outside of the filter screens, and then the filter system will start to back wash the filter screens, and the impurities will be washed down and discharged from the drain valve.

4)The time of back washing can set by yourself, when the time is up to the setting value, the drain valve will be closed, and back washing process of this group of filter screens is over, and then the next back washing process of other groups of filter screens will be start.

5)When all the filter screens are cleaned, the Zero switch will control the washing arm to original position, and the filter system will stop back washing and continue thefiltration process.
Because the back washing process is proceed one group by one group, so the filter system will keep the filtration working all the time.

The back washing process setting:

* Setting the pressure difference: There is a differential pressure gauge in the filter system, you can set the valve by yourself.

* Setting the time: There is a Time setting device in the filter system, you can set the start time of back washing and the time of duration.
If you set the pressure difference and also the time, the setting pressure difference will have priority.

* Manual operation: when you are debuging and maintaining the filter system, you can press the "TEST" button, and start the back washing process.

Automatic back washing filter housing standard performance:
Min. working pressure: 2 bar (30 psi)
Max. working pressure: 7 bar (100 psi)
Pressure drop: 0.1bar (2 psi)
Working Temp.: 65C (149F)
Micron rate: 25-3000 micron
Control voltage: 24V DC
Washing consumption(in the Min. working pressure condition): 50kg
Housing material: Carbon steel (spraying), 304SS/316SS(Blasting)

 

Model

A

B

C

D

I/O(mm)

Drain(mm)

Max flow(m3/h)

FQ-FC300

1690

265

640

300

DN5080

DN50

70

FQ-FC350

1720

265

660

350

DN80100

DN50

100

FQ-FC400

1750

255

680

400

DN100150

DN50

130

FQ-FC500

1860

290

715

500

DN200

DN80

200

FQ-FC600

1910

270

755

600

DN250

DN80

280

FQ-FC700

2040

335

755

700

DN300

DN100

450

FQ-FC800

2090

320

770

800

DN350

DN100

600

FQ-FC1000

2220

335

800

1000

DN400

DN100

800

FQ-FC1200

2360

365

825

1200

DN500

DN100

1000

Please send us the specification detail by email for quote, thanks.
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