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SCF-QSL Mechanical Quartz Sand Filter
Quartz sand filter, also known as a pressure filter, refers to the process where raw water, under a certain pressure, passes through a filter medium to remove suspended solids, insoluble particles, eliminate color and odor, and dechlorinate, thereby achieving purification. After purifying a certain amount of raw water, the filter medium is cleaned and restored to its filtering function through backwashing.
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.
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Quartz Sand Filter
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SCF-QSL Mechanical Quartz Sand Filter
Working Principle:
Quartz sand filter, also known as pressure filter, refers to the process where raw water under certain pressure passes through the filter media to remove suspended solids, insoluble particles, eliminate color and odor, and dechlorinate to achieve purification. After purifying a certain amount of raw water, the filter media is cleaned and restored by backwashing to regain its filtering function.
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Scope of Application:
Generally used in the pretreatment process of water treatment projects, mainly to remove mechanical impurities, colloids, microorganisms, organic matter, and active chlorine. The shell materials generally include PE, rubber-lined steel, steel with plastic spray coating, steel with epoxy anti-corrosion, stainless steel, and fiberglass. According to different process requirements, the filter media usually includes quartz sand, activated carbon, manganese sand, and anthracite. According to the water inlet method, it can be divided into single-flow filters and double-flow filters, and according to site requirements, it can be vertical or horizontal. They can be used alone or in combination depending on the actual situation.
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.
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International Trade Department:+8613210553256
Address: Room 1512-1, Building 7, Rongsheng Times International Plaza, No. 9 Beiyuan Street, Licheng District, Jinan City, Shandong Province
