Filtering system, air conditioning system, data center, and cleaning method for filtering system

An air conditioning system, comprising:

• a water pump;
• a heat exchanger set;
• and
• a filtering system, comprising:
• a total liquid inlet;
• a first Y-shaped strainer;
• a second Y-shaped strainer;
• and
• a total liquid outlet,
• wherein the water pump is connected to the total liquid inlet, and the heat exchanger set is connected to the total liquid outlet;
• the first Y-shaped strainer comprises a first liquid flow port, a second liquid flow port, and a first drainage port, the first liquid flow port is connected to the total liquid inlet by using a first pipeline, the second liquid flow port is connected to the total liquid outlet by using a second pipeline, and the first drainage port is connected to a first waste liquid area by using a third pipeline;
• the second Y-shaped strainer comprises a third liquid flow port, a fourth liquid flow port, and a second drainage port, the third liquid flow port is connected to the total liquid inlet by using a fourth pipeline, the fourth liquid flow port is connected to the total liquid outlet by using a fifth pipeline, and the second drainage port is connected to a second waste liquid area by using a sixth pipeline;
• and
• a first switch valve is disposed in the first pipeline, a second switch valve is disposed in the second pipeline, a third switch valve is disposed in the third pipeline, a fourth switch valve is disposed in the fourth pipeline, a fifth switch valve is disposed in the fifth pipeline, and a sixth switch valve is disposed in the sixth pipeline.