Self-cleaning Filter

The multi-column self-cleaning filter is an industrial automatic filter with comprehensive applications, ensuring pure and reliable filtered liquid. It is suitable for most standard water filtration applications, maintaining excellent performance in terms of treatment capacity, precision and reliability even under harsh operating conditions. It is applied in power, reverse osmosis pre-treatment, petrochemical, fine chemical, food and beverage, automotive, industrial, metallurgical, paper, pharmaceutical, microelectronic and environmental water treatment industries, filtering water suspended solids, particles, scale, algae and rust.

Water enters from the inlet, first passing through a coarse screen to remove large particles, then reaching the fine screen. During filtration, dirt and impurities accumulate on the inner surface of the fine screen, forming a filter cake layer and creating a pressure difference between the inside and outside of the fine screen.

When the pressure difference reaches the set value, the automatic cleaning process starts with uninterrupted clean water supply. The cleaning valve opens, causing a sharp pressure drop in the cleaning chamber and suction pipe. The pressure difference between the filter cylinder and suction pipe creates a suction force, sucking impurities from the inner wall of the fine screen into the suction pipe. Meanwhile, an electric motor drives the suction pipe to perform spiral movement. The combination of axial and rotational movement thoroughly cleans the entire inner surface of the fine screen within tens of seconds. The sewage valve closes after cleaning, and the filter prepares for the next cycle.

• Multi-column modular design: Ensures stable operation and flexible capacity expansion.

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• Automatic differential pressure control: Triggers cleaning based on pressure difference, ensuring efficient operation.

• Uninterrupted water supply: Continuous water supply during cleaning and sewage discharge.

• High dirt holding capacity: Coarse and fine screen design effectively captures large and small particles.

• Short cleaning time: Spiral suction cleaning completes within tens of seconds, reducing water loss.

• Customizable interface: Pipeline interfaces designed according to different working conditions.

• Automated backwash system: Modular design with forward filtration and reverse backwash for efficient cleaning.

• Intelligent control system: PLC control with adjustable backwash intervals (0-10h) based on water quality.

• High-performance precision filter element: Made of 304/316L stainless steel, with good corrosion resistance and long service life.

• Overall structural advantage: Robust frame design ensures stable operation under high pressure.

• Power industry: Pre-filtration of power plant water systems.

• Reverse osmosis pre-treatment: Protection of RO membranes from sediment and particles.

• Petrochemical and fine chemical industry: Filtration of process water and chemical reagents.

• Food and beverage industry: Filtration of drinking water and production water.

• Pharmaceutical and microelectronic industry: Purification of high-purity water and industrial liquids.