Product Description
Automatic backwash filter is a kind of self-cleaning filter that consists of multiple stainless steel filer elements and can continuously perform filtration for 24 hours.
It can effectively filter out solid particle contaminants from various water and low-viscosity liquids like rolling emulsions to make the liquid cleanliness meet the system operation and downstream process requirements and protect key downstream equipment. It is widely used in oil & gas, metallurgy, marine filtration systems, water treatment, Pulp & paper and other industries.
Work Principle
The unfiltered liquid flows into the automatic backwash filter from the inlet , half of the liquid flows through the central distribution tube, moves towards the top of the filter and enters filter elements from the top . The other part of the liquid flows into filter elements directly from the bottom of the filter . The unfiltered liquid enters filter elements from the upper and lower ends at the same time and flows out from the outlet after filtering .
When the pressure drop or time reaches the preset value , the automatic backwash procedure is triggered. The gear motor drives the back-flushing rotation arm to backwash the filter elements in turn while the filtration continues. During backwashing, the upper end of the filter element is covered by the sliding block and then the back-flushing valve opens. The differential pressure between the outside of the filter element and back-flushing outlet makes the clean filtrate reversely flush the inner surface of filter element . The washed down impurities are discharged through the sewage pipe.
Product Parameters
| Applicable Liquid |
Raw water, cooling water, process water and low viscous liquid(<40cps), TSS<300ppm |
| Min. Working DP |
Differential pressure between the outlet and back-flushing outlet >0.15mPa |
| Filtration Rating |
50-2000µm |
| Standard Design Pressure |
0.7MPa/1.0MPa, higher pressure rating available |
| Housing Standard |
Factory Standard/ASME/PED/GB150 |
| Fluid Working Temperature |
0-95°C |
| Flowrate Range |
17-10560m³/h |
| Self-cleaning DP |
50-70kPa |
| Control System |
Based on SIEMENS controller, parallel control mode of D.P. and time |
| Gear Motor |
180W/370W, 3 phases, 380V, IP55, CCWU |
| Inlet and Outlet Size |
2"-24"/DN50-DN1000 |
| Connection Standard |
Flange,HG20592-2009(DIN compatible) / HG20615-2009(ANSI B16.5 compatible ) |
| Filter Element |
V-SLOT Slotted SS filter element, SS 304 / 316L, duplex SS 2205 / 2507 |
| Wet Part Material |
304/316L/CS, special material available( such as duplex SS 2205 / 2507) |
| Inner Corrosion Protection |
Expoxy paint, PA11 or rubber Lining for sea water resistance |
| Housing Sealing Material |
NBR /EPDM |
| Back-Flushing Valve |
Wafer butterfly valve / full-port ball valve |
| Valve Actuator |
Pneumatic or electric, IP65 |
| Facility Supply |
0.4-0.6mPa clean and dry air, 380V AC |
Detailed Photos
Product Advantage
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Continuous automatic online filtration, no flow interruption when back-flushing, reducing downtime and maintenance cost
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Compact design, super high filtration capacity in single filter,remarkably saving the installation space and construction cost
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Various filter housing materials and filter element materials available, meeting various filtration requirements of raw water,cooling water, process water and sea water
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Multi-candle structure, large filter area, high dirt loading capacity, low surface velocity, low pressure drop, lower back- flushing frequency and less water waste
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V-SLOT high performance filter element, V-shape slotted opening, efficient back-flushing performance especially when filtering sticky contaminants
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Rigid structure standing high pressure impact, high reliablity with long service life usually over 10 years
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lmpulse back-flushing,quick action, high back-flushing intensity, less flushing water purge
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Double open ends of filter element allowing water flowing from both sides, no clogging at one blind end of the element, well-distributed filter cake, high flowrate and low pressure drop
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D.P. transmitter with local display as the standard configuration, long term steady and reliable, remote monitor support, much better than the common D.P.switch
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Reliable automatic control system, friendly Interface and operation, efficiently control the filter running
Product Application
The automatic self-cleaning filter system is mainly used in terms of water purification. And it can be used for water filtration, water treatment, and water transformation in industries, agriculture, power, electronics, medicine, food, printing and dyeing, construction, steel, metallurgy, papermaking, coal mine, swimming pool, landscape, greening, and other industries, especially in the field of microfiltration in the procession of high water quality requirements. Using its various functions, the automatic self cleaning strainer can remove many kinds of impurities to achieve the purpose of water purification, such as silt and biological silt, clay, rust and corrosion products, suspended matter, algae, and bacteria with high molecular, organics and other small matter.
-Oil & gas. Injection well water filtration; act as a pre-filter for hydrocracking, hydrogenation modification, hydrorefining and -hydrodesulfurization reactor to prevent the catalyst bed from clogging;
-Metallurgy. Rolling mill coolant filtration;
-Marine filtration system. Seawater desalination filtration; ballast water filtration;
-Water treatment. Boiler supply water filtration;
-Pulp & paper. Starch slurry filtration; paper making water filtration.
Packaging & Shipping
Company Profile
Hebei Slot Filter Technology CO.,LTD was founded in 2014, is an industry and trade integration company, with international advanced welding processing equipment and professional production team.
10 years of professional experience in the production of filtration and solid-liquid separation products will provide you with high quality products and services. Main products: Wedge Wire Screens, Sieve bend screen, Centrifugal screen, Water Intake screen, Johnson screen support grid, Well screen ,Backwash filters, Resin traps, Laterals Water distributor, Perforated metal etc., many raw material categories, such as SS304,SS316L, duplex steel, super duplex , Monel 400, Hastelloy etc. Our products can be used in where solids and liquids are separated,solids and solid separation mainly in water treatment, starch processing, sugar mills, pharmaceutical, chemical, petrochemical and other industries.
Our factory has more than ten professional production lines, with a variety of manufacturing processes to meet a variety of custom needs, such as CNC punching, CNC drilling, laser cutting, high frequency resistance welding, milling, polishing, pickling and others.
Our consistent goal is to strictly control product quality, enhance professional skills, and develop more products and solutions to meet the special needs of customers. We strive to be a manufacturer focused on providing solutions to achieve long-term win-win cooperation with our customers.
Workshop & Production:
Quality Management:
FAQ:
1. Who are we?
Hebei Slot Filter Technology Co., Ltd., a beacon of innovation and excellence since 2014, is strategically positioned in the bustling industrial heart of Hebei, China. We are proud to deliver our state-of-the-art filtration solutions to key global markets such as North America (40%) and Western Europe (30%), alongside vibrant regions like South Asia, Africa, and the Middle East (10% each). Our dynamic workforce, consisting of 11 to 50 dedicated professionals, is committed to pushing the boundaries of filtration technology.
2. How can we guarantee quality?
To ensure unparalleled quality, we diligently design and produce a pre-production sample that undergoes thorough evaluation and scrutiny before we proceed to mass production. This meticulous process ensures each product meets our exacting standards.
We execute a thorough final inspection process, ensuring that every single product adheres to premium quality benchmarks before it embarks on its journey to reach our esteemed customers.
3. What can you buy from us?
Explore our extraordinary selection of products, which includes Wedge Wire Screen, Stainless Steel Woven Mesh, Sintered Mesh, Punching Hole Metal, and superior-grade filter housing, all crafted to meet diverse filtration needs.
4. Why should you buy from us rather than other suppliers?
1. We provide comprehensive OEM & ODM services. 2. Our skilled team collaborates closely with customers to bring precise design visions to life. 3. Our dedicated research and development team drives innovation, ensuring our offerings are always at the cutting edge of the industry.
5. What services can we provide?
Our delivery terms are exceptionally flexible, encompassing FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, and DES, allowing us to cater to a wide array of logistical demands.
We accommodate a diverse range of payment currencies, including USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, and CHF, ensuring smooth and seamless international transactions for our clients around the world.
Take advantage of our convenient payment options, which include T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, and Escrow, tailored to suit your financial preferences.
Our global communication capabilities are enhanced by proficiency in a wide variety of languages, such as English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian, ensuring effective and seamless interactions with our multinational clientele.
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