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Stainless steel sand tank filter system backwash status


Backwash status of stainless steel sand cylinder filter system: As impurities continue to accumulate in the packing layer, the internal pressure head loss will continue to increase. When the loss of the inlet and outlet water pressure head reaches the set value, the system will automatically activate the constant pressure device to switch to the backwashing state. When the backwashing of this unit is over, the electric valve will change the water supply direction to realize backwashing one by one, which is more convenient Cleans away accumulated impurities. When the system is in the state of backwashing, the filtration continues, and the standard unit sand tank to be backwashed does not filter, while other standard unit sand tanks in the system are still filtering.

Part of the filtered clean water is used to backwash the standard unit sand tank, and the rest is still sent to the user. The backwash sewage is discharged through the backwash drain of the hydraulic valve. In the high-speed sand tank automatic filtration system, the special design of the water collector can make the fillers scrub each other to maximize the efficiency of backwashing and reduce the required backwashing water (clean water). At the same time, there is no Running material phenomenon.

The backwashing time of a standard unit sand tank is 2 minutes. After the backwashing is over, the internal pressure head loss of the standard unit sand tank is reduced to a reasonable range. The constant pressure device gives a recovery signal, and the electric valve returns to the filtering state. The next standard unit sand tank Then it is ready to enter the backwash state. Poolking is the best swimming pool equipment manufacturer and supplier in China. Poolking exists to provide the highest quality swimming pool equipment while offering competitive pricing..

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