Municipal sludge rotational flow microwave drying system

The invention discloses a municipal sludge rotational flow microwave drying system which comprises a hot air chamber, a sludge drying machine, a rotational flow microwave drying machine, a cyclone separation device, a bag type dust remover, a tail gas treatment device, a dried particle collection chamber and a plurality of groups of fans which are sequentially connected and communicated. The hot air chamber provides drying heat energy for the sludge drying machine; the sludge drying machine completes crushing and drying of the sucked sludge, and sludge particles subjected to outer layer drying are fed into the rotational flow microwave drying machine; a microwave generator is mounted on the inner side wall of the rotational flow microwave drying machine, and sludge particles can be dried again from inside to outside; then the dried sludge particles are fed into a cyclone separation device to complete precipitation separation, coarse sludge particles are discharged into a dried particle collection chamber, and