automatic Backwash Multi media filter with rubber lining housing

Technical requirements

•  Min. pressure: 0.2Mpa
• Max. pressure:1.0Mpa
• Working temperature:<65℃
• Water in/out: 4 inch
• Power:220V/50Hz

Working princinple

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.

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.

 Sand filter specification sheet

Remark: 1. Agri - agricultral irigation, indus. -industrial.

2. The flow is different when used for irrigation and industrial

Sand filter dimensions

 Corrugated paper plus plastic film

1. Our company provides maintenance for 1 year after delivery.

2. Alfter the goods are delivered, our company will track the products.

3. In addition to the after-sales service during the warranty period, the company is also

responsible for equipment maintenance after the warranty period.

Our main products are automatic back washing filter, self cleaning filter,sand media filter, disc filter, and so on. We could provide efficient,stable solutions for irrigation and industrial water treatment.
Filtersare widely used in construction, steel, electricity, petrochemical, metallurgical, pharmaceutical, paper, automotive, hotels, municipal and other major industries.

They have been exported to hundreds of countries and regions such as America, Canada, Chile, Australia, Italy, India, Singapore,Korea,etc.

We owned 9 patents and adopted the ISO9001 and CE.

Our team are professional and always here to support you!

 Q:Does the sand filter have automatic backwash function.

A: Yes.According to differential pressure/time.

Q:What compoents do the filter include?

A:2*700mm tanks, mainfolds,backwash valves,controller(DMF28-2 model)

Q: Where is your factory?

A:Changsha city, Hunan province, China

Q:Can you accept OEM?

A:Yes.We could do OEM for you.

Q: Do you have a certification?

A: Yes. we have ISO / CE certificate and certificate of patent

Q: How about the delivery time?

A: Usually 15-25 days after prepayment is confirmed.