Automatic Backwash Sand Media Filter Manufactured by CNC

Product Description

Automatic Sand Filter for Drip Irrigation
Product DescriptionBrief introduction
Sand filter system includes tanks with under drain system, backwash valve, piping, and automatic control system.
DMF filters are designed for the most challenging dirty water conditions, with a high-performance solution for water filtration down to 20 microns. These durable carbon steel filters utilize a 24"-54" vertical side shell depth for the removal of organic and inorganic suspended solids for filtering large volumes of water with very little pressure drop and a long-term value.
Application
Commercial - Golf course and sporting field irrigation systems.Industrial - Pre-preteatment of UF/RO and wastewater recycling.Irrigation - Primary filtration for the prevention of blockages in the irrigation systemHVAC- cooling tower side filtration and full systemMetal Processing Plants - Filtration for water cooling and spray nozzles.Mining - Cleaning of process and waste water.
If you need sand filter for agricultural irrigation, please select model as below.(40 micron)

Model	Vessel qualities	Flow(min.) (m3/h)	Flow(max.) (m3/h)	Filtration area (m2)	Backwash flow(single vessel) (m3/h)	Pressure (max.) (Bar)	Water in/out	Backwash pipe
DMF-2016-1A	1	8	13.5	0.2	13.5	8	2"	2"
DMF-2416-1A	1	13.5	22	0.28	22	8	2"	2"
DMF-2016-2A	2	16	27	0.4	13.5	8	2"	2"
DMF-2816-1A	1	18	30	0.38	30	8	3"	3"
DMF-2416-2A	2	27	44	0.56	22	8	3"	2"
DMF-3616-1A	1	28	50	0.64	50	8	3"	3"
DMF-2816-2A	2	36	60	0.77	30	8	4"	3"
DMF-2416-3A	3	40.5	66	0.85	22	8	3"	3"
DMF-4816-1A	1	50	85	1.13	85	8	4"	4"
DMF-2816-3A	3	54	90	1.15	30	8	4"	3"
DMF-3616-2A	2	56	100	1.28	50	8	4"	3"
DMF-3616-3A	3	84	150	1.92	50	8	6"	3"
DMF-4816-2A	2	100	170	2.26	85	8	6"	4"
DMF-4816-3A	3	150	255	3.39	85	8	8"	4"
DMF-4816-4A	4	200	340	4.52	85	8	8"	4"
DMF-4816-5A	5	250	425	5.65	85	8	10"	4"
DMF-4816-6A	6	300	510	6.78	85	8	10"	4"

Working principle
The Filtering Process
Filtering with media filters, also known as depth filtration, is done by filtering water through a thick layer of graded particles, called the filter bed. These particles can be sand, gravel or other granular materials. The filtration degree depends on the effective size of the bedding and the water velocity through the filter.
Raw water enters from the filter inlet (1) and percolates through the filter bed (2). Suspended materials come into contact and attach to the media particles. Clean water flows through the filtration nozzles (3) and out of the filter via the outlet valve (4).
The gradual dirt buildup in the filter bed causes an increase in the pressure differential across the filter and when it reaches its maximum design value, a cleaning process should be performed. In automatic media filter installations a pressure differential switch senses the pressure differential and when it reaches a preset value, the self cleaning process begins.
Technical requirements
Min. pressure: 0.15Mpa
Max. pressure: 1.0Mpa
Working temperature: <65ºC
Tank thickness: 4/6/8 mm
Power: 220V/110V/battery The Cleaning Process
Cleaning is done by backwashing; pressurized water flows in reverse direction - from the nozzles upwards, causing suspension of the filter bed, thus releasing the suspended matter from the bedding. The dirt particles are then washed out of the filter through the back-flush valve. In automatic media filters installations the cleaning process is done by the system's controller. When the pressure differential switch senses that the differential pressure across the system reached a pre-set value, a signal is sent to the flushing controller and the self cleaning process begins.
Detailed Photos
Product Components (We provide free parts within warranty)
Installation InstructionsCases picture
Company ProfileAbout CDFS
20+ water filters manufacturing experience 120+ water treatment solutions40000+ squares factory area
100% products quality rate
50+ exported countries 80000+ annual for water treatment equipments
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FAQQ: Where is your factory?
A:Changsha city, Hunan province, China? Q: How about the delivery time?
A: Usually 7 days for standard model.
Q:Does the filter operated automatically?
A:Yes. Automatic backwash by differential pressure/ time.
Q:Can you accept OEM?
A:Yes. We could do OEM and put your logo.
Q: Do you have a certification?
A: Yes. We have ISO / CE certificate and certificate of patent
Q: Can we choose the color of filter housing?
A: Yes. Blue/green/red or others.
Q:How is the installation of filter?
A: Shipping in skid. Just connect the flanges of water in/out and drain out.
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