Intercommunicated coal slurry pump feeding system

The utility model discloses an intercommunicated coal slurry pump feeding system which comprises a first coal slurry tank, a second coal slurry tank and a third coal slurry tank, the bottoms of the first coal slurry tank, the second coal slurry tank and the third coal slurry tank are all communicated with a first conveying pipe with a first valve, a second conveying pipe with a second valve and a plunger valve, each first conveying pipe is connected with a first pressurizing coal slurry pump, and each second conveying pipe is connected with a second pressurizing coal slurry pump. Each second conveying pipe is connected with a second pressurizing coal slurry pump, three-way pipes are arranged on the first conveying pipe between each first valve and each first pressurizing coal slurry pump and the second conveying pipe between each second valve and each second pressurizing coal slurry pump, and each three-way pipe is provided with a third valve; the number of the feeding pipelines is two, one ends of the two fe