Working Principle of a Fully Automatic Self-Cleaning Filter

Release Date:

2021-09-26

Filtration process: When turbid water enters the filter element through the inlet of the filtration unit, it first passes through the internal screen of the flow-directing plate, which captures oversized impurities and debris. These contaminants are carried along with the turbid water into the filter element, where they are retained, while the clarified water passes through the filter element and exits, thereby completing the filtration process.

Working Principle of a Fully Automatic Self-Cleaning Filter

　　Filtration process: When turbid water enters the filter element through the inlet of the filtration unit, it first passes through the internal screen plate of the flow-directing baffle, which removes oversized impurities and debris. These large particles are carried along with the turbid water into the filter element, where they are retained, while the clarified water passes through the filter element and exits, thereby completing the filtration process.

　　Forced flushing process: As turbid water is filtered into clean water, the impurities trapped inside the filter element accumulate, progressively reducing the effective flow area of the element and causing a gradual pressure differential between the inlet and outlet of the filter. When this pressure differential reaches the set threshold specified by the differential-pressure controller, the controller sends a signal to the electrical control cabinet. At this point, the drive mechanism on the filter is activated, driving the rotating brush to perform cleaning and sludge discharge, thereby completing the forced flushing cycle. The fully automatic backwash filter features an internal structure comprising a stainless-steel wire brush, stainless-steel filter elements, and rotating components, along with a drive motor and electric valves that automatically carry out the cleaning and sludge-discharge operations. It can operate in automatic mode or be manually controlled, and is equipped with either differential-pressure–based or timed automatic sludge-discharge functionality. When water flows through the filter, mechanical impurities are intercepted by the filter elements. As the accumulated impurities on the filter-element surface increase and the pressure differential reaches 0.05 MPa, the differential-pressure switch triggers a signal, which in turn activates the electrical control cabinet to initiate the sequence: the drive motor starts, the sludge-discharge valve opens, and the rotating brush scrubs the accumulated impurities off the filter elements, discharging them through the sludge outlet. The entire brushing and cleaning process requires no manual intervention and does not necessitate shutting down the system. In addition, the equipment is equipped with both timed automatic cleaning and manual cleaning functions, ensuring safe and reliable effluent quality under all operating conditions.

　　Product Features:

　　The fully automatic self-cleaning filter is suitable for a wide range of water supply systems—particularly those requiring continuous, uninterrupted operation. It effectively removes various mechanical impurities from the water, ensuring the safe and reliable operation of system equipment, and serves as an ideal replacement for imported filters. All performance indicators fully match the level of comparable imported products.

　　1. Fully automatic operation? Can it perform timed cleaning and blowdown, or differential-pressure-based cleaning and blowdown?

　　2. Filtration accuracy is selectable from 20 to 3,000 µm; large filtration area; high dirt-holding capacity.

　　3. Special structural design of the filter element—robust and durable?

　　4. Continuous backwashing? Minimal flush volume? Water conservation