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Automatic Self-Cleaning Filters


Self-cleaning filter is a kind of filter that directly intercepts impurities in water, removes suspended matter, particulates, reduces turbidity, purifies water quality, reduces system fouling, bacteria and algae, rust and so on. In order to purify the water quality and protect the system other equipment work normally, the water enters the self-cleaning filter body from the intake, because of the intelligent (plc,pac) design, the system can automatically identify the impurity deposition degree, Automatic full discharge for discharge valve signal. Sinofiltec all series filtration solution can meet kinds of different water quality in industry area, our professional system design is made and provided according to each customer`s requirement to solve water treatment efficiently, by global sales network and close cooperation with customers, our manufacture capability, rich experience and technology ability can help you reduce costs, reduce energy consumption, improve the quality.

Operation principles:

The water enters the filter through the inlet, and the impurity of the larger particle is first filtered by the coarse filter element assembly, then the impurity of the fine particle is filtered through the fine filter net, and the water is discharged from the outlet after the impurity of the fine particle is filtered by the fine filter net. In the filtration process, the inner layer of the fine filter gradually accumulates, and a pressure difference between the inner and outer sides of the filter is formed. When this pressure difference reaches the preset value, the automatic cleaning process begins: the drain valve is opened, the hydraulic motor chamber and the hydraulic cylinder in charge of the assembly release pressure and drain the water; The pressure in the hydraulic motor chamber and the suction pipe is greatly reduced.

 Because of the negative pressure, the sewage from the inner wall of the fine filter net is absorbed by the suction nozzle, which flows into the hydraulic motor chamber by the hydraulic motor and is discharged by the drain valve, forming a process of suction. When the water flow passes through the hydraulic motor, the suction pipe is rotated, and the hydraulic cylinder piston drives the suction pipe to make axial motion. 

The whole inner surface of the filter net is completely cleaned by the combination of axial motion and rotational motion. The whole cleaning process will last for tens of seconds. When the drain valve is closed at the end of the cleaning, the increased water pressure will bring the hydraulic cylinder piston back to its initial position, and the filter will begin preparing for the next flushing cycle. In the process of cleaning, filter normal filtration work uninterrupted. 


1. Leading product structure and function design, compact structure, original filter case integral molding, processing technology to avoid all kinds of leakage caused by steel filter shell welding.

2. The high strength ductile iron material has excellent anticorrosive property and prolongs the service life of the product.

3. Special filter element design and manufacturing technology, high precision filter never wear, pressure test never deformation, factory precision test to meet user requirements.

4. The inner and outer double layer structure is made up of stainless steel welding mesh, sieve plate and screen net, and the anti-interference ability of filter element is enhanced because of the active cleaning method, which is especially suitable for poor water quality conditions.

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Automatic Self-cleaning Filters

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Henan Sinofiltec Technology Co.,Ltd ,