Overflow device of vertical disc slurry tank

The utility model discloses a vertical disc slurry tank overflow device which comprises vertical discs and a slurry tank below the vertical discs, a main shaft is arranged at the axis of the vertical discs and drives the vertical discs to rotate above the slurry tank, a plurality of groups of overflow pipes are arranged in the slurry tank, a gathering pipe is arranged outside the slurry tank, and a plurality of groups of overflow pipes are arranged in the gathering pipe. The end parts of the overflow pipes penetrate through the slurry tank and are communicated with the gathering pipe, a cover plate is arranged between every two adjacent vertical discs, each group of overflow pipes and the cover plates are in one-to-one correspondence up and down, a fixing mechanism is arranged between the slurry tank and the overflow pipes, and the overflow pipes are fixed on the inner wall of the slurry tank through the fixing mechanism; the slurry tank of the overflow device for the slurry tank of the vertical disc is large