SCF-L Fully Automatic Suction Filter

Working Principle:

Dirty water enters from the filter inlet, first passing through a 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 layer of filtered debris. Since this debris layer builds up on the inside of the fine filter screen, a pressure difference forms between the inside and outside of the fine filter screen. When the pressure difference of the self-cleaning filter reaches a 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 suction scanner that moves up and down. It is hollow and has several suction nozzles vertically distributed along its axis at certain intervals. The inside of the suction scanner is connected to a 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 nozzle. At each nozzle, water flows rapidly in reverse from outside to inside of the filter screen, washing off debris attached to the inner wall of the filter screen into the suction nozzles, through the hollow shaft of the suction scanner, and then discharged through the drain valve. The entire cleaning process takes about 30-60 seconds, after which the pressure difference returns to normal, ending the cleaning cycle and resuming filtration. The system continues to flow during cleaning.

Product Performance Parameters:
 

Flow Range: 30-1100 t/h

Filter Element Type: Stainless steel woven (10-500um), stainless steel wedge wire (80um-3000um)

Filter Screen Material: 304, 316L, 2205

Filter Element Precision: 10-500um (sintered mesh), 100um-3000um (wedge wire mesh)

Standard Pressure: 1.0Mpa, 1.6Mpa (2.5Mpa, 4.0Mpa customized for special specifications)

Shell Material: CS, 304, 316

Temperature: 0-85℃ (85℃-200℃ customized according to actual site conditions)

Control Box: PLC touch screen control, PCB integrated circuit control (including remote signals)

Control Mode: Manual, differential pressure, time

Cleaning Time: 10-60 seconds

Cleaning Pressure Loss: 0.01Mpa

Product Size Table

Precision Conversion Table

Equipment Installation Diagram 1

Figure 1

Selection Guide:

1. Water treatment volume

2. System pipeline pressure

3. Actual 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 on 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, etc., or on supply and drainage pipelines to filter out impurities in water and 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.

3. Water purification systems: Used for pretreatment before membranes (ultrafiltration, nanofiltration, reverse osmosis, etc.).

4. Wastewater treatment: Filtration before wastewater discharge; filtration before biochemical treatment of wastewater; filtration for reclaimed water reuse.

5. Raw water treatment: Can filter surface river water, lake water, seawater, reservoir water, well water, and groundwater to remove sand, bacteria, algae, organic matter, etc.

2. Irrigation: Especially suitable for water sources with high flow and impurity content, such as agricultural irrigation, sprinkler irrigation, parks, golf courses, and turf watering.

3. Paper industry: White water filtration.

4. Plastics industry: Product recovery cooling water filtration.

 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.