The Rinsing Process of the V-Type Filter in Ultrapure Water Equipment

The rinsing process is as follows: First, close the inlet valve 1, but leave the square holes 2 on both sides open, so some water continues to enter the V-shaped trough and then enters the filter tank through the small hole 6 at the bottom of the trough. Then, open the drain valve 15 to drain the surface water from the drain channel until the water level in the filter tank is level with the top of the V-shaped trough. The rinsing operation can be carried out in three steps: "air flushing - air and water backflushing - water flushing"; or in two steps: "air and water backflushing - water flushing". The three-step rinsing process is as follows: 1. Start the blower and open the air inlet valve 17. Air enters the bottom of the filter tank evenly through the small hole 10 at the top of the air and water distribution channel and is sprayed out by the long-handled filter head, which scrubs off the impurities on the surface of the filter media and suspends them in the water. As water continues to enter through the small holes 6 at the bottom of the V-shaped trough, a transverse water flow is generated in the filter tank, which is equivalent to surface sweeping, pushing impurities towards the central drainage channel 7.2. The flushing water pump is started, and the flushing water valve 18 is opened. At this time, air and water enter the air and water distribution channel at the same time, and then enter the filter tank evenly through the square holes 9, small holes 10 and long-handled filter heads, so that the filter media is further flushed. At the same time, transverse flushing continues. 3. Air flushing on the island, followed by backwashing with water for a few minutes, plus transverse sweeping, finally flushes all the impurities suspended in the water into the drainage trough.