Auto washing brush filter SPFZ-Y 、 SPFZ-L-I（II)
Features
  ●The auto washing brush filter is an electrical device with full automatic and self –washing function. It can reduce repair and maintenance fee and implements protection to the downstream equipments.
  ●Precise space-saving design with linear structure.
  ●High-precision high strength wedge screen with filtering accuracy 100-3000μm.
  ●Simple wash mode: stainless steel brush.
  ●Without fluid interruption during back washing.
  ●Less water consumption during back washing, less than 1% of overall flow.
  ●Suitable to the filtration of flow with big flow rate and high level pollution.

Applications
  ●Water treatment for environment protection
  ●Steel industry
  ●Metallurgical industry
  ●Chemical industry
  ●Plastic industry
  ●Agricultural irrigation
Working principle
Filtration:
Fluids enter from inlet and flow out from the small chinks of the wedge screen in the filter. Dusts or particle are easy to be remained by the screen. When dusts are accumulated at the screen, pressure difference will appear in the inlet and outlet locations.
Washing:
If the pressure difference in the inlet and outlet reaches0.5kg/cm2, the backwashing system functions automatically by the control of differential controller on the frame body. Washing operation is carried out by sewage valve and rotary stainless steel brush. Particles are easily brushed out by the steel brush and drained out from the sewage valve. The backwashing operation lasts 15 seconds without flow failure.
Control:
When different pressure reaches preset value through the screen, the differential controller will send a signal to PLC controller. And the PLC controller will initiate motor and sewage valve to start wash. When fault happens, pressure reduction will occur. The filter will remain in a washing state and send out alarming signals. Continuous backwashing operation is controlled in 5 minutes.
Technical parameters

Maximum flow rate	1000m3/h	According to the filtering precision and impurity can query to the company, my company to provide the most suitable models
Minimum working pressure	0.2Mpa(g)
Max working pressure	1.6Mpa(g)	special on customer request
Diameter of inlet and outlet	DN50~DN400	flange standard HG20592-97 special on customer request
Minimum working temperature	80℃	special on customer request
Filtering accuracy	100~3000µm
Screen material	provide 304,316,316Lstainless steel on requests
Equipment material	Provide Carbon steel or 304,316,316Lstainless steel on requests
Motor power	0.37~0.75KW
Power voltage	380V, 50Hz, 3-phase
Backwashing flow rate	less than 1% of overall flow
Backwashing time	15秒
Backwashing pressure difference	0.5kg/cm2	Offer design on process demand

Table for installation (SPFZ-Y)

SPFZ-Y type

Nominal diameter	Size（mm）		Sewage valve	Reference flow rate m3/h
Nominal diameter	L	H	Sewage valve	Reference flow rate m3/h
DN50	600	400	DN20	25
DN65	600	450	DN20	30
DN80	700	500	DN25	50
DN100	800	550	DN25	80
DN125	900	600	DN25	125
DN150	950	650	DN25	150
DN200	1050	650	DN32	200
DN250	1250	750	DN40	300
DN300	1500	1020	DN40	500
DN350	1800	1240	DN50	800
DN400	1800	1310	DN50	1000

Note：Figures in the table refer to water flow rate.
SPFZ-Ⅰ(Ⅱ) profile

Notes:
Because the features of material are different, the company can provide design of particular filters requested by the customers. The customer should detail related parameters such as flow rate (m3/h), filtering precision (μm), pressure (Mpa), density (kg/m3) and viscosity (CP). Please contact the company for erecting drawings.

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