The self-cleaning filter is a fully automatic online self-cleaning water filter. A set of stainless steel brushes, or sucking scanners, or a combination of wire brushes and sucking is installed in the filter net. The above devices are driven by a geared motor to rotate, and they are on the filter end. Install an electric drain valve on the cover or at the bottom. When working, the turbid water enters from the water inlet and filters the dirt through the stainless steel wedge mesh. The clean water flows out from the water outlet. When too much dirt accumulates, it will cause poor filtration and increase the pressure of the cavity. When the pressure difference between the inlet and outlet water reaches a certain value (pre-set), the pressure difference switch sends a signal to the controller. The controller starts the reducer motor and drives the internal device to rotate to brush off or suck up dirt and impurities. At the same time, open the electric sewage valve to discharge the dirt. The cleaning time is about 1 minute. There is no need to cut off the flow during the self-cleaning period. The pressure loss of the sewage does not exceed 0.05MPa, and the flow loss does not exceed 1%. The brush filter overcomes many shortcomings of traditional filter products, such as small dirt holding capacity, easy to be blocked by dirt, the filtering part needs to be disassembled and cleaned, and the filter status cannot be monitored. It has the function of filtering the raw water and automatically cleaning and draining the filter element. , And the system has uninterrupted water supply when cleaning and draining sewage, which can monitor the working status of the filter with a high degree of automation. Covering the requirements of various filtration precisions from 10um to 3000um, providing customers with various water filtration equipment.