Product Overview

The brush-type fully automatic self-cleaning filter is suitable for various filtration applications. It can also be customized according to different needs in industrial applications, meeting requirements such as high temperature and high pressure. The filter body is made of stainless steel and other materials, and is equipped with high-performance stainless steel filters. The filter can be used in parallel to handle any large flow of water, and has been successfully applied in various industries including metallurgy, petrochemicals, power, municipal services, plastics, sugar production, air conditioning and heating, seawater desalination, papermaking, wastewater treatment, food, drinking water, and irrigation.

Working principle

The brush-type fully automatic self-cleaning filter is composed of the filter body, the filter screen, one or more (depending on the model configuration) flushing valves and the flushing controller. After water enters the filter, it first passes through the coarse filter screen, then enters the fine filtration chamber, where the fine filter screen retains impurities (as small as 2 μm). The water exiting the filter is clean water.

The contaminants accumulate on the fine filter screen, creating a pressure difference between the inner and outer surfaces of the filter. When the pressure difference reaches the preset value (such as 0.5 kgcm²), the self-cleaning cycle is initiated. The pressure sensor transmits a signal to the controller, which then activates the flushing valve, causing the pressure inside the hydraulic motor, the dirt collector, and the suction nozzle to equalize with the atmosphere. This creates a strong suction force to flush the contaminants on the opposite filter screen of the suction nozzle, which are then expelled through the flushing valve. As the flushing water passes through the hydraulic motor, it drives the dirt collector to rotate, allowing the suction nozzle to remove all the contaminants from the entire filter screen and clean them. Once the filter screen is fully cleaned, the controller closes the flushing valve, and the equipment automatically returns to the full filtration state. The entire flushing process takes only a few seconds, and the system continuously supplies water.

Application fields

Steel industry: Net circulating water (recirculating cooling water) systems for blast furnaces, steelmaking and steel rolling workshops, as well as pre-filtration systems for turbid circulating water (slag flushing water) systems. 
Petroleum industry: Filtration of the secondary filtration (recirculating cooling water) system, wastewater treatment, etc. 
Electric power industry: Boiler water system treatment, sewage treatment, etc. 
Municipal engineering: Municipal greenery water supply system (used for filtering sand, stones and other impurities in river water and groundwater), municipal sewage treatment system, etc. 
Machining industry: Circulating cooling water systems, high-pressure flushing water systems, etc.

Product advantages

1. Continuous water supply: During cleaning, the water volume is very small, only 5% of the filter's total water output. The flushing time is 2 to 15 seconds. The entire system maintains continuous water supply. 
2. High filtration accuracy: The filtration accuracy can reach 20 micrometers. We offer various types of filter screens for your selection. 
3. Large filtration area: The effective filtration area of the standard filter screen is 7 to 40 times that of the inlet area. 
4. Reliable cleaning: There are multiple control methods available, including manual, differential pressure, time, and PLC program logic control options. 
5. Installation is simple and cost-effective: The structure has various forms, making it suitable for installation in various on-site conditions without affecting the operation performance. 
6. Long service life: Under normal conditions, it can last for more than 10 years. The filter screen is made of stainless steel and different specifications and accuracies of filter screens can be easily replaced as needed.

Selection of main parameters

Note: Users can customize according to actual working conditions.