Drinking water bucket cleaning equipment and pipeline system thereof

A drinking water bucket cleaning device comprises a rinsing device for rinsing the inner wall of a drinking water bucket; the pre-flushing device is used for pre-flushing the inner wall of the drinking water bucket; the alkali liquor flushing device is used for flushing the inner wall of the drinking water bucket with alkali liquor; the disinfectant flushing device is used for flushing the inner wall of the drinking water bucket with a disinfectant; the finished product water washing device is used for washing the inner wall of the drinking water bucket with finished product water; the first reflux water collecting device is arranged below the finished product water flushing device and is used for collecting process water generated in the using process of the finished product water flushing device to form first reflux water; and the first reflux pump is connected between the first reflux water collecting device and the pre-flushing device and is used for supplying the first reflux water in the first reflux wa