Automatic Self Cleaning Filter for Circulating Water Filter

• Customization: Available
• Type: Water Filtration
• Usage: Environmental Protection
• Model NO.: NBX High performance self-cleaning filter
• Style: Network Type
• Performance: Sophisticated Filters
• Transport Package: Wooden Crate Packaging
• Specification: 2000X600X700
• Trademark: XUYANG
• Origin: Jiangsu, China
• HS Code: 84212199
• Production Capacity: 50000pieces/Year

Product Description

 Automatic Filter

Automatic Self-Cleaning Screen Filter:The NBX is the latest development in automatic self-cleaning screen filters. The filteroffers an efficient solution for filtering water with fluctuating levels of dirt and varying flow rates
in the widest range of applications.The suction system with Nozzles is pressed against the stainless steel filter screen duringthe backflushing process due to a hydraulic pressure differential, thus ensuring perfectcleaning. The filtration process is not interrupted while backflushing, and a minimum of flushincwater is required.
An electric motor and an internal automatic reversing mechanism move the suction systemalong the entire filter element for perfect cleaning.

The filter can be applied for diverse applications due to the economical and efficient automaticself cleaning mechanism. This self cleaning mechanism includes the S.S. pressure compensa-tion, differential pressure switch, S.S. filter screen and plastic flushing valve.

The NBX is available in a wide range of sizes and filter perforations for a broad range ofapplications.The filters are available in 2" to 20" (DN 50 mm - 500 mm) connections with flows up to 1600m3/h. Filter perforations are available in 400 to 20 microns.For high flow applications, numerous filters can be installed to form a filter unit of very highcapacity.


 

                                                               
                                                            High performance self-cleaning filterBNX

Advantages of the NBXAutomatic Self-Cleaning Electric Screen Filter:
 ☆Efficient and automatic self-cleaning system capable of processing high dirt loads
 ☆Low pressure loss
 ☆Continuous uninterrupted filtration during the flushing process
 ☆Long life as a result of polyester-coated steel, stainless steel filterscreen and flushing mechanism
 ☆High filtration efficiency resulting from the unique stainlesssteel Super Screen
 ☆Low flushing capacity at minimal loss of flushing water
 ☆pH 5-9 resistant
 ☆Max. operating temperature 55 ºC, up to 65ºC on request
 ☆Low pressure loss

Unique Super Screen Filter Element:
The Super Screen filter is a multi layer stainless steel wire mesh sintered together. This creates a self-supportingstructure with a very large effective filter surface to achieveexcellent filtering results.



Coating:
In preparation for the coating, the filters are provided with aspecial layer of zinc phosphate. This treatment ensuresproper adhesion of the coating, and protects against rustingthrough from the inside. Subsequently, the polyester coating isapplied electrostatically, both internally and externally, beforebeing furnace-hardened. The entire process involves 7 steps,and results in a perfect coating with a thickness ofapproximately 120 microns.

Self-Adjusting flushing nozzle:
The NBX is fitted with patented adjusting suctionnozzles, that, during the flushing process, due to hydraulicdifferences, follow the filter surface as close as possible . Thisresults in highly efficient cleaning with as little drain water aspossible and reliable operation.

Automatic Reversing Mechanism:
The internal flushing mechanism automatically creates a linearmovement (back and forth), eliminating the use of limit switchesand the need for a 3-phase connection. This means a single-phase motor (230 V) can be used to rotate the dirt collector thatscans the entire filter screen clean in 30 seconds

Materials:
Filter housing: Polyester-coated steel (option: stainless steel)
Filter element: fine screen,Multi layer sintered stainless steel wire mesh
Rubbers: Natural rubber (NR)
Filter perforations:400-300-200-130-100-80-50-40-30-25 microns


Operation:
Filtration process in two stages:(Non standard configuration,additional costs and not shown)
first stage- coarse filtration: the raw water enters the filter through the inlet and passes through the coarse screen (1) to the inside of the filter. This prevents passage of large particles which maydamage the filter internals.
second stage- fine filtration: after coarse filtration the water flows through the inside of the filter tothe internal side of the fine screen 2). The water passes throuah the screen from inside out to thefiltered water chamber (8) and flows out through the outlet. As the water passes through the finescreen, the solids accumulate creating a cake of dirt on the inner surface of the screen; as a result thepressure drop across the screen increases, and when it reaches a preset level (0.5 bar) the filtercontroller activates the self cleaning process.
Flushing cycle:
On a flushing command, the flushing valve (6) opens to the atmosphere and pressure drop is createdin the flushing chamber (4). As a result, water with dirt from the screen begins flowing through thesuction nozzles (3) and collector pipe (7) to the drain via flushing chamber (4) and flushing valve (6).The pressure differential created at the suction nozzles provides a local back-flushing effect, drawinga portion of the water back through the screen and removing the accumulated solids. The nozzles areself-adiusting in accordance with the screen surface. The accurate contact point between the unigue-adjusting nozzle and the screen insures an increased suction ability and decreases significantlythe water consumption during flushing. Simultaneously a unidirectional electric motor with the wormgear (5) starts moving the collector with the suction nozzles in helical movement to cover the entirescreen's surface. enabling complete and effective cleaning of the screen. The electrical motor isconnected throuah the collector to a reversina direction unit (9) which enables a continuous linearmovement (back and forth) of the collector.
The filter is equipped with a pressure gauge and a differential pressure switch that activate thecleaning process, using a computer, PLC control or switch box, in the most efficient manner. Selfcleaning takes place by moving the suction system in a spiral movement across the entire filtersurface, removing the dirt off the surface and subsequently draining it.





customisation:
All NBX filters are designed with the option of fitting an airvalve on the filter housing. The controlpanel can be fitted to either side of the filter, increasing system design freedom. On request, the filtelhousing and element can be manufactured completely from stainless steel. Various motors to suitedifferent electrical currents are available. A range of applications are possible; consult your supplier

Application guideline
For selecting the right automatic filter it is important to take a number of variables into account.
The origin of the water to be used, the degree of contamination and the application for the filtered water.
A pre-filter can sometimes be necessary. For any additional questions contact your supplier.
All our recommendations are without obligation, and we cannot be held liable for any adverse
consequences resulting from these recommendations.
 

Maximum flow in m³/h
Micron
Filter element	Water quality	20*	35*	50*	80	100	130	200	≥ 300
2"-2200 cm²	Good	10	15	20	25	25	25	25	25
	Fair	-	12	15	20	25	25	25	25
	Contaminated	-	10	12	15	20	25	25	25
3"-2200 cm²	Good	10	15	25	35	40	40	40	40
	Fair	-	12	22	30	40	40	40	40
	Contaminated	-	10	20	25	30	40	40	40
4"-2200 cm²	Good	10	15	35	45	60	70	80	80
	Fair	-	17	25	35	50	55	70	80
	Contaminated	-	15	20	30	40	47	60	70
4"-3600 cm²	Good	16	40	67	80	80	80	80	80
	Fair	-	27	40	67	80	80	80	80
	Contaminated	-	21	32	53	67	80	80	80
6"-3600 cm²	Good	16	40	67	94	120	133	150	150
	Fair	-	27	40	67	80	94	134	134
	Contaminated	-	21	32	53	67	80	120	120
6"-6200 cm²	Good	24	60	100	140	150	150	150	150
	Fair	-	40	60	100	120	140	150	150
	Contaminated	-	30	50	80	100	120	140	150
8"-6200 cm²	Good	24	60	100	140	180	200	240	240
	Fair	-	40	60	100	120	140	200	200
	Contaminated	-	30	50	80	100	120	140	160
8"-8000 cm²	Good	32	80	133	160	250	270	300	300
	Fair	-	50	80	130	160	185	250	300
	Contaminated	-	40	64	100	130	160	220	250
10"-8000 cm²	Good	32	80	130	185	250	270	350	400
	Fair	-	50	80	130	160	185	265	270
	Contaminated	-	40	64	100	130	160	240	250

Sizes 10", 14", 16", 18" and 20" are upon request.

The assessment and use of the application guideline:
In the application guideline table the following water qualities are differentiated..
☆Good (Bassin-rainwater)
☆Fair (Surfacewater)
☆Contaminated (Re-circulationwater)

Above mentioned qualities are based on the following TSS values (Total Suspended Solids ) in
ppm:
☆Good -TSS<10ppm>
☆Fair -TSS< 30ppm (mg/ltr)
☆Contaminated -TSS<50ppm(mg>

☆Differentiation based on contamination type, organic and inorganic and partical size still needsto be preformed, also the fluctuations in water quality and the seasonal influences need to betaken into account.
☆An effective pre-filtration is recommended for a continuance filtration level.
☆For a filter < 50 micron a pre-filtration of 200 micron or less is mendatory, this to ensure areduction of 50% on the above mentioned quality level.

High performance filter and cleaning mechanism:
The filter screen is an important part of a self-cleaning filter, which directly affects the filtration effect and filter efficiency. High performance filters can effectively and stably remove suspended solids, particulate matter, algae, colloids, reduce turbidity, purify water quality, remove dirt and rust from pipeline systems, and meet the normal working requirements of pipeline water quality and protection system equipment. NBX high-performance composite filters are made of all stainless steel, which increases the effective filtration area by 30% compared to traditional PVC skeleton composite filters.





                            High performance filter screen

 

Type		NBX2200-2	NBX2200-3	NBX2200-4	NBX3600-4	NBX3600-4	NBX6200-6	NBX6200-8	NBX8000-8	NBX8000-10
Connection - B	inch	2"	3"	4"	4"	6"	6"	8"	8"	10"
Diameter - D	inch	10"	10"	10"	10"	10"	16"	16"	16"	16"
Flange(ISO 7005 PN10)		50	80	100	100	150	150	200	200	250
Bolt circle dia.	mm	125	160	180	180	240	240	295	295	350
Bolt holes	mm	4x Ø18	8x Ø18	8x Ø18	8x Ø18	8x Ø22	8x Ø22	8x Ø22	8x Ø22	12x Ø22
Weight	kg	180	183	187	220	230	325	334	350	360
Length - L	mm	1350	1350	1350	1700	1700	1800	1800	2020	2020
Pitch in/out - A	mm	430	430	430	600	600	780	780	990	990
Drain valve	inch	1½"	1½"	1½"	2"	2"	2"	2"	2"	2"
Filtersurface	cm²	2200	2200	2200	3600	3600	6200	6200	8000	8000
Max. pressure	bar	10	10	10	10	10	10	10	10	10
Min. flush.pres.	bar	2	2	2	2	2	2	2	2	2
Min. flush.cap.*	m³/h	8	8	8	10	10	12	12	14	14
Flushing water **	ltr	67	67	67	83	83	100	100	117	117
Electric motor	1 phase 230V/50Hz (Other voltages on request)
Size E	mm	510	510	510	510	510	695	695	695	695
Size H	mm	680	680	680	680	680	815	815	815	815
Size L1	mm	2380	2380	2380	2530	2530	290	2900	3100	3100

Specifications for larger models on request

☆The flushcapacity is based on a 2 Bar pressure difference
☆The quantity flushingwater for each flushing cycle is based on a 2 Bar pressure difference




Applications

• Cooling water treatment:

  A process that utilizes filtration to reduce sediment accumulation in heat exchangers, thus boosting the cooling power of cooling towers, air conditioning systems and DC systems. In addition, the water filtration keeps the make-up water system in top condition.

• Water source treatment:

  A procedure to obtain clean surface water from rivers, lakes, seas, reservoirs and wells. This technique can remove unwanted particles including sand, bacteria, algae, and organic material.

• Industrial circulating water filtration:

  Employed on equipment that requires specific water quality standards, such as coolers and rolling mills, as well as continuous casting machines, polishing equipment, pumps, electromagnetic valves and ion exchangers, sprayers and radiators. This form of filtration helps eradicate contaminants from the water, preventing blockages that could otherwise occur in pipes, hoses, and other components.

• Irrigation:

  Highly suitable for water sources with high flow and impurities, and can be used for various purposes, such as agricultural irrigation, park sprinkling, golf courses, and sports fields.

• The paper industry:

  efficient white water filtration in its operations.

• The plastic industry: the filtration and circulation of cooling water to optimize injection processes.

• Membrane, resin and ultrafiltration pretreatment

• Seawater desalination systems and mariculture filtration systems with pretreatment filtration.

 

 

Self Cleaning Filter For Water Treatment
 


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