Self Cleaning Filter Automatic Backwash Filter for High Flow, Low Viscosity Liquids Filtration

• Customization: Available
• Type: Self Cleaning Filter
• Usage: Environmental Protection, Chemical Industry
• Model NO.: SLT-ZFC01
• Motive Force: Electric power
• Style: Vertical
• Performance: Sophisticated Filters
• Min. Working Dp: Differential Pressure Between The Outlet and Back
• Applicable Liquid: Raw Water, Cooling Water, Process Water and Low VI
• Filtration Rating: 50-2000µm
• Standard Design Pressure: 0.7MPa/1.0MPa, Higher Pressure Rating Available
• Transport Package: in Wooden Case
• Specification: Brush type
• Trademark: SLOT
• Origin: China
• HS Code: 8421299090
• Production Capacity: 6000 Pieces/Year

Product Description

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.

 

Working Principle

The unfiltered liquid flows into the automatic backwash filter from the inlet , 50% 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.

Details photos

 

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/ VITON
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

Product Advantage

-Continuous automatic online filtration, no flow interruption when back-flushing, reducing downtime and maintenance cost
-Compact design, super high filtration capacity in single filter,remarkably saving the installation space and construction cost
-Various filter housing materials and filter element materials available, meeting various filtration requirements of raw water,cooling water, process water and sea water
-Multi-candle structure, large filter area, high dirt loading capacity, low surface velocity, low pressure drop, lower back- flushing frequency and less water waste
- V-SLOT high performance filter element, V-shape slotted opening, efficient back-flushing performance especially when filtering sticky contaminants
-Rigid structure standing high pressure impact, high reliablity with long service life usually over 10 years
- lmpulse back-flushing,quick action, high back-flushing intensity, less flushing water purge
-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
-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
-Reliable automatic control system, friendly Interface and operation, efficiently control the filter running

Product Application

Automatic backwash filer can effectively filter out solid particle contaminants from water and low viscosity liquids (such as rolling emulsion, etc.), so that the liquid cleanliness can meet the system operation and downstream process requirements and protect the downstream key equipment. As a result, automatic backwash filers are widely used in the following industries.
-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. is a comprehensive enterprise deeply engaged in the field of industrial precision filtration and self-cleaning filtration. With over a decade of industry experience, the company possesses outstanding design and R&D capabilities. Leveraging advanced filtration technology and high-quality product resources, we provide customers with comprehensive, one-stop filtration solutions.  

SLOT has obtained ISO9001 quality management system certification and achieved certification from SGS ,strictly adheres to international standards, industry-specific regulations, and customized client requirements in product design and manufacturing. We are committed to developing high-performance, high-quality filtration equipment and precision filtration components.  

SLOT automatic self cleaning filter system are widely applied in various industries, including petrochemicals, fine chemicals, energy and power, water treatment, automotive manufacturing, food and beverage, and metal processing. We have established long-term, stable partnerships with numerous well-known industrial enterprises both domestically and internationally.  

With exceptional product filter performance, advanced manufacturing capabilities, and professional services, SLOT has earned widespread recognition. If you have higher requirements for filter system performance, quality, safety, and service, SLOT is your trusted long-term partner.

Workshop &Production

Quality Management

FAQ

1. Who are we?

We are based in Hebei, China, start from 2014,sell to North America(40.00%),Western Europe(30.00%), South Asia (10.00%),
Africa(10.00%), Mid East(10.00%). There are total about 11-50 people in our office.

2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.What can you buy from us?
Johnson Screen,Bridge Slotted Well Screens,Sand Control Well Screens, Gravel pre-pack Screen,Pipe-based screen,Perforated Pipe,API/5CT Casing and Tubing.

4. Why should you buy from us not from other suppliers?
1. Support OEM & ODM
2. We can help customers design drawings.
3. We have own professional research and development group.

5. What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;
Language Spoken :English, Chinese, Spanish, Japanese ,Portuguese, German, Arabic, French, Russian, Korean, Hindi, Italian

If any interesting to be our agent in your local market, feel free to contact with me.