Introduction to self-cleaning filter
The self-cleaning filter adopts a modular and integrated design, and the main material is made of 304 or 316L stainless steel, which has excellent corrosion resistance and anti-aging properties, and can be adapted to different water quality conditions (including weakly acidic, weakly alkaline and water bodies containing slightly corrosive media).The core components of the equipment are high-precision wedge-shaped strainers or stainless steel braided strainers. The filtration accuracy can be customized on demand in the range of 10µm-3000µm, which can accurately match the filtration needs of different industries.The equipment integrates full-functional units such as water inlet, filtration, cleaning, sewage discharge, and control. It has a compact structure and covers an area of only 1/3-1/5 of the traditional filter.It can flexibly adopt vertical, horizontal, inverted and other installation methods to adapt to various site layouts such as workshops, pump houses, and water treatment stations.The core accessories (motor, PLC electronic control system, differential pressure sensor, automatic sewage valve, cleaning mechanism) are all selected from high-quality brands in the industry, and have undergone strict factory testing to ensure long-term stable operation of the equipment and effectively reduce the incidence of failures.
Working principle of self-cleaning filter
DIEN's self-cleaning filter adopts a closed-loop working mode of "filtration-differential pressure trigger-automatic cleaning-reset operation", which realizes automatic control throughout the process without manual intervention.Its core workflow is as follows: First, the raw water enters the equipment body through the inlet, and the pre-coarse filter assembly intercepts large particles of impurities (such as sand, gravel, debris, etc.) with a particle size ≥1mm to avoid clogging the filter element caused by entering the fine filter unit; then, the pretreated raw water enters the fine filter area, and through the retention of high-precision filters, impurities such as suspended solids, colloids, and fine particles in the water are removed, and the filtered clean water is discharged through the outlet and enters the subsequent water system or water treatment unit.As the filtration process continues, the impurities trapped on the surface of the filter continue to accumulate, resulting in the formation of a pressure difference inside and outside the filter. When the pressure difference reaches a preset threshold value (normally set to 0.05-0.1MPa), or reaches the PLC preset timing cleaning time, the equipment automatically starts the cleaning procedure.During the cleaning stage, the sewage valve is automatically opened, and the impurities attached to the inside of the filter are completely peeled off by rotating the suction nozzle with hydraulic drive or scraping with a motor-driven brush. The impurities are discharged from the equipment with the sewage flow. The entire cleaning process takes 10-60 seconds, and the equipment maintains normal water output during the cleaning period without interrupting the system operation.After the cleaning is completed, the pressure difference between the inside and outside of the filter is restored to the normal range, the sewage valve is closed, the equipment is automatically reset, and the next round of filtration cycle is entered.
Advantages of self-cleaning filters
From a professional and technical point of view, DIEN's self-cleaning filters have the following core advantages: first, they have a high degree of automation, adopt a PLC programmable control system, support differential pressure, timing, and manual triple trigger cleaning modes, and can realize unattended operation, greatly reduce manual operation and maintenance costs, and adapt to industrial scenarios where continuous production cannot be stopped; second, the filtration efficiency is high, and the high-precision filter combined with the optimized flow channel design, the filtration accuracy is stable, and the removal rate of suspended solids can reach more than 98%, which can effectively ensure that the subsequent water quality is up to standard; third, energy saving and consumption reduction, the water consumption of a single cleaning only accounts for 0.08% of the total filtered water. -0.6%, the operating power of the equipment is low, and the energy consumption of perennial operation is significantly lower than that of traditional manual cleaning filters; fourth, the durability is strong, the stainless steel body and filter material can withstand different climates and water quality conditions, and the service life can reach more than 15 years. The filter can be repeatedly cleaned and reused to reduce the cost of replacement of consumables; fifth, the adaptability is wide, the filtration accuracy and processing flow can be customized according to actual working conditions, and the impact load resistance is strong. It can cope with instantaneous fluctuations in water quality and water volume to ensure the stable operation of the filtration system; sixth, the operation and maintenance are convenient, and the equipment supports remote monitoring and fault alarm functions, which can monitor the operating status of the equipment in real time. , Filter pressure difference and other parameters, so that the staff can detect and deal with abnormalities in a timely manner, there is no need to frequently remove and wash the filter in the later stage, and the operation and maintenance workload is greatly reduced.
Self-cleaning filter applications
Based on its excellent filtration performance and adaptability, DIEN self-cleaning filters are widely used in industrial, municipal, civil, environmental protection and other fields, including: industrial fields, such as process water filtration, circulating water pretreatment, and deep filtration of production wastewater in chemical, pharmaceutical, food, electronics, metallurgy and other industries, which can effectively protect follow-up equipment such as heat exchangers and pumps to avoid fouling and wear; in the field of municipal water treatment, it is used for pretreatment of waterworks, deep filtration of sewage treatment plants, and purification of secondary water supply in residential areas to remove sediment, algae, and suspended solids from the water to ensure the safety of water supply; in the field of agriculture and irrigation, it is used for farmland irrigation. , Garden irrigation water filtration to remove impurities from the water and prevent clogging of irrigation pipelines; in addition, it can also be used in seawater desalination pretreatment, central air-conditioning circulating water filtration, mine wastewater treatment, highway service area sewage treatment and other scenarios to achieve industry-wide water treatment demand coverage.
Self-cleaning filter process flow
The standardized process flow of self-cleaning filters can be divided into five core stages. The process is closed-loop and efficient, and fully complies with national and local water treatment standards: 1. Pretreatment of water inlet: raw water is transported through the pipeline to the inlet of the filter, and the interception of large particles of impurities is completed through the coarse filter assembly to avoid impurities entering the fine filter unit; 2. Precision filtration: The pretreated raw water enters the fine filtration area, intercepts fine impurities through a high-precision filter, and the clean water is discharged from the outlet through the filter and enters the follow-up system; 3. Cleaning trigger: Impurities accumulate on the surface of the filter, the pressure difference inside and outside the filter reaches a preset value or reaches a timed time, and the PLC control system automatically triggers the cleaning command; 4. Automatic cleaning: the sewage valve is opened, the cleaning mechanism (nozzle or brush) is activated, and the impurities on the surface of the filter are peeled off. The impurities are discharged with the sewage flow, and the water is not interrupted during cleaning; 5. Reset operation: After the cleaning is completed, the pressure difference of the filter screen returns to normal, the sewage valve is closed, the equipment stops cleaning, returns to the normal filtration state, and enters the next cycle.The entire process does not require manual intervention, and can be tested by a third-party testing agency to ensure that the water quality of the effluent meets relevant standards and meets the water requirements of various industries.
