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SCF-H Multi-Column Backwash Filter
The backwash filter consists of several parts including the tank body, filter columns, backwash structure, reducer, electric valves, differential pressure controller, and electric control box. The tank body is divided into upper and lower chambers by a baffle; the upper part is the clean water zone, and the lower part is the turbid water zone, which are completely separated. Several stainless steel filter columns are installed on the baffle. The raw water to be treated enters the turbid water zone through the inlet, then flows upward through the water distribution holes on the baffle into the inner cavity of the filter columns.
Dirty water enters from the filter inlet, first passing through the coarse filter screen to remove larger particles, then reaching the fine filter screen. During filtration, the fine filter screen gradually accumulates dirt and impurities from the water, forming a filter impurity layer. Because the impurity layer accumulates on the inside of the fine filter screen, a pressure difference forms on the inside and outside of the fine filter screen. When the pressure difference of the self-cleaning filter reaches the preset value, a switch signal is sent to the control box PLC system to start a cleaning cycle. Cleaning process: The cleaning mechanism of the fully automatic negative pressure suction filter is a stainless steel spiral up-and-down moving suction scanner. It is hollow in structure, with several suction nozzles vertically distributed at certain distances along its axis. The inside of the suction scanner communicates with the 3” drain valve. When the drain valve opens, the pressure difference between the internal water pressure of the filter and the external atmospheric pressure generates strong suction at each suction nozzle. At each suction nozzle, water flows rapidly from outside to inside in reverse, washing impurities attached to the inner wall of the filter screen into the suction nozzle, through the hollow shaft of the suction scanner, then discharged through the drain valve, completing the cleaning process which takes about 30-60 seconds. At this time, the pressure difference returns to normal, the cleaning process ends, and filtration resumes. During cleaning, the system continues to flow.
Keywords:
Category:
Fully automatic backwash filter
TEL:
International Trade Department:
SCF-H Multi-Column Backwash Filter
Working Principle:
The backwash filter consists of a tank body, filter columns, backwash structure, reducer, electric valves, differential pressure controller, and electric control box. The tank is divided into upper and lower chambers by a baffle; the upper chamber is the clean water zone, and the lower chamber is the turbid water zone, completely separated. Several stainless steel filter columns are installed on the baffle. Raw water to be treated enters the turbid water zone through the inlet, flows upward through the distribution holes on the baffle into the inner cavity of the filter columns. Impurities larger than the filter column gaps are trapped, and clean water passes through the gaps into the clean water zone. All filtered liquid converges in the clean water zone and finally flows out from the outlet. When impurities accumulate to a certain thickness inside the filter columns, a pressure difference between the clean water zone and the turbid water zone occurs. At this time, the differential pressure controller can automatically control the backwash mechanism to start, or the backwash system can be started manually to remove the filter residue.
Precision Conversion Table
Selection Guide:
1. Water treatment capacity
2. System pipeline pressure
3. Actual on-site filtration precision requirements
4. Suspended solids content in the filtration system
5. Medium and chemical properties of the filtration system
Scope of Application:
1. Industrial circulating cooling water: Used in equipment with certain water quality requirements such as cooling towers, rolling mills, continuous casting machines, polishing machines, pumps, solenoid valves, ion exchangers, sprayers, heat exchangers, or on supply and drainage pipelines. It can filter out impurities in the water to prevent clogging of pipelines, nozzles, and other components.
2. Central air conditioning cooling water: Prevents clogging of heat exchangers, ensures heat exchange efficiency, and saves water and energy.
Dirty water enters from the filter inlet, first passing through the coarse filter screen to remove larger particles, then reaching the fine filter screen. During filtration, the fine filter screen gradually accumulates dirt and impurities from the water, forming a filter impurity layer. Because the impurity layer accumulates on the inside of the fine filter screen, a pressure difference forms on the inside and outside of the fine filter screen. When the pressure difference of the self-cleaning filter reaches the preset value, a switch signal is sent to the control box PLC system to start a cleaning cycle. Cleaning process: The cleaning mechanism of the fully automatic negative pressure suction filter is a stainless steel spiral up-and-down moving suction scanner. It is hollow in structure, with several suction nozzles vertically distributed at certain distances along its axis. The inside of the suction scanner communicates with the 3” drain valve. When the drain valve opens, the pressure difference between the internal water pressure of the filter and the external atmospheric pressure generates strong suction at each suction nozzle. At each suction nozzle, water flows rapidly from outside to inside in reverse, washing impurities attached to the inner wall of the filter screen into the suction nozzle, through the hollow shaft of the suction scanner, then discharged through the drain valve, completing the cleaning process which takes about 30-60 seconds. At this time, the pressure difference returns to normal, the cleaning process ends, and filtration resumes. During cleaning, the system continues to flow.
Interactive Messages
Fomid
International Trade Department:+8613210553256
Address: Room 1512-1, Building 7, Rongsheng Times International Plaza, No. 9 Beiyuan Street, Licheng District, Jinan City, Shandong Province
