Automatic backwash filter is mainly composed of filter housing, stainless steel filter screen, electric blowdown valve and blowdown device. When the water filter is working, the backwash butterfly valve plate is opened, and the water enters the filter element from the inlet, then flows through the filter screen, and then flows out of the system, and the impurities are intercepted inside the filter element. When the water filter needs to sewage, you can close the butterfly valve plate and open the sewage valve.

Application

Hot water circulation system in heating system；Central air conditioning, chillers, chillers cooling and refrigeration circulating water system； Industrial and civil cooling water, industrial cooling circulating water system; geothermal water circulation system for bathing, heating; etc.

Filter medium

Remove all kinds of viscous substances, colloidal particles, silt and other mechanical impurities from water.

Working principle

Under normal circumstances, water flow guide valve is open, the water flows through the filter cartridge and then flows out from the outlet. When the drain valve is open, the total water flow increases, the flow velocity increases, the impurities on the filter screen wall is washed and discharged from the drain valve; when the water flow guide valve is closed and the drain valve is open, the water is forced to flow through the filter screen at the front of the screen, and then most of the filtered water flows out from the outlet, part of the filtered water will flow back to the inside of the filter screen to backwash the screen, which achieves the effect of washing impurities adhering to the screen from the outside of the filter screen, and impurities are still discharged through the sewage outlet.