Dust collection device capable of cleaning stubborn dirt

The utility model discloses a dust suction device capable of cleaning stubborn dirt, and relates to the field of machinery, an air suction port of a dust suction device body is provided with a protective connecting shell, the lower surface of the protective connecting shell is provided with a mounting plate, and a first dirt cleaning mechanism is arranged in the protective connecting shell; the first scale removing mechanism comprises a first motor connected to the upper surface of the mounting plate through threads, the output end of the first motor penetrates through the mounting plate to be provided with a first connecting shaft, and a scale scraping head is arranged at the bottom of the first connecting shaft. The dust collection device body is independently used, the multiple first dirt removing mechanisms and the multiple second dirt removing mechanisms can be installed in the protective connecting shell at the same time through the installation plate, the stubborn dirt removing effect of the dust colle