Flocculant adding device

The utility model relates to a flocculant adding device. The flocculant adding device comprises a frequency converter, a worm gear speed reducer, a material hopper, a feeding screw rod, a material receiving drum, an induced draft pipe and a blower, wherein the frequency converter is connected with the worm gear speed reducer, the feeding screw rod is positioned inside the material hopper, one end of the feeding screw rod is connected with the worm gear speed reducer and the other end is positioned above the material receiving drum, and the material receiving drum is connected with the blower through the induced draft pipe. By adopting the flocculant adding device, the problem of eye-like aggregates of the flocculant during the adding process is solved; the addition amount of the flocculant is greatly reduced; and the cost of the enterprise is greatly saved.