Efficient treatment device for dust-containing waste gas

The invention relates to the technical field of waste gas treatment, and discloses an efficient treatment device for dust-containing waste gas, which comprises a primary treatment mechanism including a cyclone separation part, a heat recovery part sleeving the middle section of the outer surface of the cyclone separation part, and a main support frame fixedly mounted at the lower end of the outer surface of the cyclone separation part; the secondary treatment mechanism comprises a filtering part fixedly arranged at the top of the cyclone separation part, a cleaning part used in cooperation with the filtering part and an auxiliary supporting frame fixedly installed at the bottom of the cleaning part; dust in waste gas is subjected to cyclone separation and filtration in a staged treatment manner, and the advantages of the two stages are complementary, so that the advantages of low treatment cost, high filtration precision and large treatment capacity are achieved; and a cleaning part is arranged in the seconda