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• Release time：2021-11-08 09:48
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【Summary】 The working principle of the automatic backwashing disc filter 1. Regularly backwash the sewage Regular sewage cleaning can be set to take place every 2 to 24 hours. At the set time, the electric actuator will open the sewer valve for filtration The sewage is discharged for 30 to 60 seconds. Then, the electric actuator rotates the butterfly valve 90 degrees to block the filter position, change the water flow and perform backwashing. Dirty 30 to 60 seconds. When the steering butterfly valve is reset, the drain will continue to discharge for 3 to 5 seconds, and the exhaust port will close. 2. Differential pressure control sewer. The motion value of the differential pressure controller can be set at 0.03-0.07MPa. When the differential pressure before and after filtration reaches the setting of the differential pressure controller, the differential pressure will be controlled The device operates, opening the filter discharge valve, closing it for 30 to 60 seconds, resetting the steering butterfly valve, continuing to drain for 3 to 5 seconds, and then closing the drain valve. 3. Manual control. The cleaning and dirt removal can be directly controlled through the buttons on the control box. Technical parameters of the automatic backwashing disc filter product The shell material is carbon steel and stainless steel The filter material is stainless steel The sealing material is oil-resistant asbestos blue rubber Operating temperature: -30-380-80-450 Working pressure (MPa) : 0.6-5.0, 0.6-5.0 Filtration accuracy: 10-300 Principle of automatic backwashing disc filter 1. Job filtering When in normal operation, the water flow directional valve is open. The water to be treated flows out from the drain outlet through a filter. Small particle impurities and suspended matter in the water deposit near the exhaust port due to inertia. 2. Rinse the sewage During normal flushing, the water flow direction valve is open. The filter opens the valve at the exhaust port when the amount of particulate impurities and suspended solids in the water reaches a certain level. That is to say, due to the effect of water, the impurities adhering to the filter screen collection part will be washed away until the water becomes clear. Close the valve of the exhaust port again to enter the normal working state. 3. Backwash wastewater During backwashing, the water flow direction valve is closed and the drain valve is open. Due to the differential pressure effect, the water flows through the front half of the filter and then enters the outside of the filter and the middle layer of the shell. Due to the differential pressure effect, it enters the interior of the filter in the opposite direction from the outside of the network to clean the impurities adhering to the mesh and is discharged from the air outlet, achieving the purpose of cleaning the filter screen. When the steering valve is closed, the flow rate of water increases after passing through the rear seat valve, resulting in a good backwashing effect. The function of the automatic backwashing disc filter: The filtration accuracy can be selected at different levels. Semi-cleaning is convenient, takes a short time, has a small flow rate and low pressure loss. Intelligent selective control system The entire usage process is constantly flowing. High-precision filtration ensures stable water quality. The filter has a long service life and does not need to be replaced frequently. It is easy to install and use, and has a long service life. It can be applied to different raw water qualities and water requirements. There are few fragile components, no consumables, low operating costs and simple operation management.